7Baggers

Delta Air Lines, Inc
(NYSE:DAL) 

DAL stock logo

Delta Air Lines, Inc. provides scheduled air transportation for passengers and cargo in the United States and internationally. The company operates through two segments, Airline and Refinery. Its domestic network centered on core hubs in Atlanta, Minneapolis-St. Paul, Detroit, and Salt Lake City, as...

Founded: 1925
Full Time Employees: 91,000
Sector: Industrials
Industry: Airlines

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At a glance:
  • Demand Remains Resilient Across Core Markets: Delta continues to benefit from steady passenger demand, particularly in domestic and international leisure and business travel, supporting revenue stability.
  • Premium and Loyalty Revenues Are Key Profit Drivers: Higher-margin premium cabins and the SkyMiles/credit-card partnership remain important contributors to profitability and help diversify revenue beyond base fares.
  • Cost Pressures Center on Labor and Operations: Wage inflation, staffing needs, and operational reliability initiatives can pressure unit costs, making productivity and on-time performance critical to margins.
  • Fuel Price Volatility Remains a Primary Earnings Swing Factor: Jet fuel costs can materially impact results; Delta’s earnings sensitivity to energy markets remains a major variable despite hedging and efficiency efforts.
  • Balance Sheet and Cash Generation Focus Continue: Management emphasis on maintaining liquidity, generating free cash flow, and managing debt levels remains central as the company navigates cyclical demand and cost inputs.
Bull Thesis:
  • Robust Demand & Premium Travel Recovery: Delta is well-positioned to benefit from the continued strong demand for air travel, particularly in higher-margin international and premium segments, as business travel also steadily recovers, driving revenue growth and profitability.
  • Operational Excellence & Brand Loyalty: Delta consistently ranks high in operational reliability (on-time performance, fewer cancellations), fostering strong customer loyalty and a premium brand image that allows for pricing power and repeat business.
  • High-Value SkyMiles Loyalty Program: The SkyMiles program is a significant and growing profit center, generating substantial high-margin revenue through partnerships and credit card co-branding, providing a stable revenue stream less sensitive to travel fluctuations.
  • Strong Balance Sheet & Deleveraging Progress: Delta has made substantial progress in reducing its pandemic-era debt, significantly strengthening its balance sheet and improving financial flexibility, which supports future investments and potential shareholder returns.
Bear Thesis:
  • Macroeconomic Slowdown & Discretionary Spending Risk: A significant economic downturn or recession could dampen consumer and business travel demand, particularly impacting higher-margin premium and international segments, leading to lower revenue and profitability.
  • Volatility in Jet Fuel Prices: Airlines are highly sensitive to fluctuations in jet fuel prices, which represent a major operating cost. Unexpected spikes in fuel costs could severely erode profit margins despite hedging strategies.
  • Rising Labor Costs & Union Negotiations: Recent and ongoing labor contract negotiations, particularly with pilots and flight attendants, are leading to significant increases in labor costs, which will pressure operating margins in the coming years.
  • Geopolitical Instability & External Shocks: Global events such as new pandemics, geopolitical conflicts, or terrorism could rapidly disrupt travel patterns, impose operational restrictions, and significantly reduce demand, impacting Delta's global network.
Main Competitors:
  • American Airlines Group Inc. ($AAL) (Airline services), Another primary U.S. legacy competitor to Delta, American Airlines operates a vast global network, strong loyalty program (AAdvantage), and a focus on corporate and international travel. They compete head-to-head on routes, pricing, customer service, and alliances (Oneworld vs. SkyTeam).
  • Southwest Airlines Co. ($LUV) (Airline services), While operating a different business model (point-to-point, no assigned seats, free checked bags), Southwest competes with Delta for domestic leisure and some business travelers, particularly on short-to-medium haul routes. They primarily compete on price, flexibility (no change fees), and customer experience for a more value-conscious segment.
  • Alaska Air Group, Inc. ($ALK) (Airline services), Alaska Airlines is a significant competitor, especially on the West Coast and transcontinental routes. They compete with Delta on service quality, loyalty program (Mileage Plan), and network expansion, particularly after their acquisition of Virgin America, strengthening their position in key Delta markets like Seattle and Los Angeles.
  • Spirit Airlines, Inc. ($SAVE) (Airline services), As an ultra-low-cost carrier (ULCC), Spirit competes with Delta on price for the most budget-sensitive leisure travelers on specific domestic and short-haul international routes. While offering a no-frills experience, they put downward pressure on fares in markets where they operate, indirectly affecting Delta's pricing strategy for economy class.
Moat:
Delta Air Lines faces intense competition primarily from other major U.S. network carriers like United and American, with whom it competes directly for premium business and international travelers through extensive global networks, loyalty programs, and corporate contracts. Additionally, strong domestic carriers such as Southwest and Alaska Airlines challenge Delta by offering different value propositions—Southwest with its low-cost, flexible model, and Alaska with its strong West Coast presence and service quality. Ultra-low-cost carriers like Spirit also exert pressure on pricing in leisure markets. Delta's competitive moat is built on its strong brand reputation, operational reliability, extensive global network (bolstered by its SkyTeam alliance and joint ventures), and a highly regarded SkyMiles loyalty program, which drives customer retention and premium revenue.
Income Statements:
Quarterly
Annual
    Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-12-31 2014-09-30 2014-06-30 2014-03-31 2013-12-31 2013-09-30 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-06-30 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-31 2010-12-31 2010-09-30 2010-06-30 2010-03-31 2009-12-31 2009-09-30 2009-06-30 2009-03-31 2008-12-31 2008-09-30 2008-06-30 2008-03-31 2007-12-31 2007-06-30 2007-03-31 2006-12-31 2006-09-30 2006-06-30 2006-03-31 2005-12-31 2005-09-30 2005-06-30 2005-03-31 2004-12-31 
                                                                                         
      operating revenue:
                                                                                         
      passenger
    12,302,000,000 12,916,000,000 13,506,000,000 13,867,000,000 11,480,000,000 12,815,000,000 13,107,000,000 13,841,000,000 11,131,000,000 12,174,000,000 13,119,000,000 13,205,000,000 10,411,000,000 10,889,000,000 11,464,000,000 10,958,000,000 6,907,000,000 7,241,000,000 7,191,000,000 5,339,000,000 2,748,000,000 2,698,000,000 1,938,000,000 678,000,000 7,569,000,000 10,245,000,000 11,410,000,000 11,368,000,000 9,254,000,000 9,648,000,000 10,796,000,000 10,546,000,000 8,765,000,000                                                     
      cargo
    226,000,000 246,000,000 233,000,000 212,000,000 208,000,000 248,000,000 196,000,000 199,000,000 178,000,000 188,000,000 154,000,000 172,000,000 209,000,000 249,000,000 240,000,000 272,000,000 289,000,000 304,000,000 262,000,000 251,000,000 215,000,000 205,000,000 142,000,000 108,000,000 152,000,000 186,000,000 189,000,000 186,000,000 192,000,000 214,000,000 226,000,000 223,000,000 202,000,000 199,000,000 187,000,000 183,000,000 160,000,000 174,000,000 167,000,000 165,000,000 162,000,000 193,000,000 196,000,000 207,000,000 217,000,000 243,000,000 244,000,000 230,000,000 217,000,000 238,000,000 229,000,000 232,000,000 238,000,000 241,000,000 243,000,000 262,000,000 244,000,000 256,000,000 257,000,000 264,000,000 250,000,000 236,000,000 227,000,000 211,000,000 176,000,000 253,000,000 177,000,000 173,000,000 185,000,000  162,000,000 160 134,000,000  82,000,000 112,000,000 126,000,000 121,000,000 128,000,000 123,000,000 137,000,000 128,000,000 127,000,000 132,000,000  
      other
    3,326,000,000 2,841,000,000 2,934,000,000 2,569,000,000 2,352,000,000 2,496,000,000 2,374,000,000 2,618,000,000 2,439,000,000 1,861,000,000 2,215,000,000 2,201,000,000 2,139,000,000 2,297,000,000 2,271,000,000 2,594,000,000 2,152,000,000 1,925,000,000 1,701,000,000 1,536,000,000 1,187,000,000 1,070,000,000 982,000,000 682,000,000 871,000,000 1,008,000,000 961,000,000 982,000,000 1,026,000,000 880,000,000 931,000,000 1,006,000,000 1,001,000,000 1,545,000,000 1,474,000,000 1,377,000,000 1,300,000,000 1,310,000,000 1,245,000,000 1,312,000,000 1,327,000,000 1,184,000,000 1,316,000,000 1,361,000,000 1,248,000,000 1,169,000,000 1,158,000,000 1,125,000,000 1,022,000,000 964,000,000 1,007,000,000 981,000,000 929,000,000 923,000,000 988,000,000 1,019,000,000 943,000,000 920,000,000 991,000,000 998,000,000 922,000,000 885,000,000 948,000,000 948,000,000 866,000,000 773,000,000 873,000,000 924,000,000 898,000,000  579,000,000 569 532,000,000  268,000,000 289,000,000 287,000,000 295,000,000 299,000,000 166,000,000 487,000,000 197,000,000 183,000,000 176,000,000  
      total operating revenue
    15,854,000,000 16,003,000,000 16,673,000,000 16,648,000,000 14,040,000,000 15,559,000,000 15,677,000,000 16,658,000,000 13,748,000,000 14,223,000,000 15,488,000,000 15,578,000,000 12,759,000,000 13,435,000,000 13,975,000,000 13,824,000,000 9,348,000,000 9,470,000,000 9,154,000,000 7,126,000,000 4,150,000,000 3,973,000,000 3,062,000,000 1,468,000,000 8,592,000,000 11,439,000,000 12,560,000,000 12,536,000,000 10,472,000,000 10,742,000,000 11,953,000,000 11,775,000,000 9,968,000,000 10,245,000,000 11,060,000,000 10,791,000,000 9,148,000,000 9,458,000,000 10,483,000,000 10,447,000,000 9,251,000,000 9,502,000,000 11,107,000,000 10,707,000,000 9,388,000,000 9,647,000,000 11,178,000,000 10,621,000,000 8,916,000,000 9,076,000,000 10,490,000,000 9,707,000,000 8,500,000,000 8,602,000,000 9,923,000,000 9,732,000,000 8,413,000,000 8,399,000,000 9,816,000,000 9,153,000,000 7,747,000,000 7,789,000,000 8,950,000,000 8,168,000,000 6,848,000,000 6,805,000,000 7,574,000,000 7,000,000,000 6,684,000,000  5,719,000,000 5,499 4,766,000,000  3,448,000,000 4,144,000,000 4,138,000,000 4,659,000,000 4,655,000,000       
      yoy
    12.92% 2.85% 6.35% -0.06% 2.12% 9.39% 1.22% 6.93% 7.75% 5.87% 10.83% 12.69% 36.49% 41.87% 52.67% 93.99% 125.25% 138.36% 198.95% 385.42% -51.70% -65.27% -75.62% -88.29% -17.95% 6.49% 5.08% 6.46% 5.06% 4.85% 8.07% 9.12% 8.96% 8.32% 5.50% 3.29% -1.11% -0.46% -5.62% -2.43% -1.46% -1.50% -0.64% 0.81% 5.29% 6.29% 6.56% 9.42% 4.89% 5.51% 5.71% -0.26% 1.03% 2.42% 1.09% 6.33% 8.60% 7.83% 9.68% 12.06% 13.13% 14.46% 18.17% 16.69% 2.45%  32.44% 127295771.98% 40.24%  65.86% -100.00% 15.18%  -25.93%           
      qoq
    -0.93% -4.02% 0.15% 18.58% -9.76% -0.75% -5.89% 21.17% -3.34% -8.17% -0.58% 22.09% -5.03% -3.86% 1.09% 47.88% -1.29% 3.45% 28.46% 71.71% 4.46% 29.75% 108.58% -82.91% -24.89% -8.93% 0.19% 19.71% -2.51% -10.13% 1.51% 18.13% -2.70% -7.37% 2.49% 17.96% -3.28% -9.78% 0.34% 12.93% -2.64% -14.45% 3.74% 14.05% -2.68% -13.70% 5.24% 19.12% -1.76% -13.48% 8.07% 14.20% -1.19% -13.31% 1.96% 15.68% 0.17% -14.44% 7.24% 18.15% -0.54% -12.97% 9.57% 19.28% 0.63% -10.15% 8.20% 4.73%   104000627.40% -100.00%   -16.80% 0.14% -11.18% 0.09%        
      operating expense:
                                                                                         
      salaries and related costs
    4,541,000,000 4,592,000,000 4,443,000,000 4,402,000,000 4,083,000,000 4,126,000,000 4,231,000,000 4,012,000,000 3,791,000,000 3,769,000,000 3,760,000,000 3,692,000,000 3,386,000,000 3,070,000,000 3,050,000,000 2,955,000,000 2,826,000,000 2,632,000,000 2,566,000,000 2,328,000,000 2,202,000,000 1,940,000,000 1,956,000,000 2,086,000,000 2,771,000,000 2,950,000,000 2,884,000,000 2,752,000,000 2,639,000,000 2,739,000,000 2,753,000,000 2,668,000,000 2,584,000,000 2,632,000,000 2,715,000,000 2,616,000,000 2,473,000,000 2,869,000,000 2,463,000,000 2,391,000,000 2,311,000,000 2,213,000,000 2,276,000,000 2,195,000,000 2,092,000,000 2,036,000,000 2,069,000,000 2,046,000,000 1,969,000,000 1,911,000,000 1,976,000,000 1,922,000,000 1,911,000,000 1,828,000,000 1,850,000,000 1,825,000,000 1,763,000,000 1,711,000,000 1,717,000,000 1,739,000,000 1,727,000,000 1,708,000,000 1,669,000,000 1,702,000,000 1,672,000,000 1,186,000,000 1,894,000,000 1,891,000,000 1,867,000,000  1,086,000,000 1,092 1,091,000,000  708,000,000 906,000,000 940,000,000 1,008,000,000 1,014,000,000 1,166,000,000 1,114,000,000 1,235,000,000 1,298,000,000 1,411,000,000  
      aircraft fuel and related taxes
    2,742,000,000 2,380,000,000 2,570,000,000 2,458,000,000 2,410,000,000 2,409,000,000 2,747,000,000 2,813,000,000 2,598,000,000 2,941,000,000 2,936,000,000 2,516,000,000 2,676,000,000 2,849,000,000 3,318,000,000 3,223,000,000 2,092,000,000 1,577,000,000 1,552,000,000 1,487,000,000 1,017,000,000 723,000,000 486,000,000 372,000,000 1,595,000,000 2,011,000,000 2,239,000,000 2,291,000,000 1,978,000,000 2,327,000,000 2,498,000,000 2,341,000,000 1,856,000,000 1,526,000,000 1,519,000,000 1,448,000,000 1,240,000,000 1,256,000,000 1,422,000,000 1,228,000,000 1,227,000,000 1,433,000,000 1,819,000,000 1,457,000,000 1,835,000,000 4,056,000,000 2,952,000,000 2,434,000,000 2,226,000,000 2,222,000,000 2,291,000,000 2,595,000,000 2,289,000,000 2,391,000,000 2,221,000,000 3,305,000,000 2,233,000,000 2,020,000,000 2,881,000,000 2,663,000,000 2,166,000,000 1,928,000,000 2,023,000,000 1,960,000,000 1,683,000,000 1,706,000,000 1,973,000,000 1,812,000,000 1,893,000,000  1,952,000,000 1,678 1,422,000,000  790,000,000           
      refinery expense
    1,654,000,000                                                                                     
      contracted services
    1,190,000,000 1,175,000,000 1,166,000,000 1,155,000,000 1,121,000,000 1,094,000,000 1,069,000,000 1,041,000,000 1,024,000,000 1,032,000,000 1,004,000,000 994,000,000 1,010,000,000 920,000,000 881,000,000 791,000,000 753,000,000 697,000,000 634,000,000 570,000,000 519,000,000 380,000,000 379,000,000 344,000,000 675,000,000 667,000,000 685,000,000 657,000,000 632,000,000 529,000,000 562,000,000 540,000,000 544,000,000 557,000,000 561,000,000 543,000,000 523,000,000 511,000,000 520,000,000 484,000,000 476,000,000 473,000,000 477,000,000 457,000,000 441,000,000 423,000,000 459,000,000 440,000,000 427,000,000 426,000,000 429,000,000 409,000,000 401,000,000 389,000,000 402,000,000 397,000,000 378,000,000 383,000,000 419,000,000 415,000,000 425,000,000 393,000,000 398,000,000 366,000,000 392,000,000 346,000,000 415,000,000 376,000,000 458,000,000  272,000,000 257 254,000,000  160,000,000 289,000,000 292,000,000 273,000,000 257,000,000 261,000,000 279,000,000 275,000,000 270,000,000 272,000,000  
      landing fees and other rents
    913,000,000 914,000,000 921,000,000 878,000,000 851,000,000 803,000,000 832,000,000 766,000,000 748,000,000 683,000,000 679,000,000 617,000,000 584,000,000 570,000,000 562,000,000 546,000,000 504,000,000 542,000,000 524,000,000 460,000,000 493,000,000 323,000,000 378,000,000 350,000,000 467,000,000 441,000,000 460,000,000 442,000,000 419,000,000 461,000,000 421,000,000 407,000,000 373,000,000 384,000,000 400,000,000 379,000,000 365,000,000 367,000,000 399,000,000 376,000,000 348,000,000 329,000,000 403,000,000 388,000,000 373,000,000 353,000,000 393,000,000 355,000,000 341,000,000 350,000,000 378,000,000 359,000,000 323,000,000 324,000,000 360,000,000 347,000,000 305,000,000 306,000,000 342,000,000 320,000,000 313,000,000 313,000,000 331,000,000 324,000,000 313,000,000 318,000,000 340,000,000 315,000,000 316,000,000  190,000,000 185 179,000,000  122,000,000 185,000,000 185,000,000 197,000,000 191,000,000 292,000,000 205,000,000 216,000,000 227,000,000 215,000,000  
      aircraft maintenance materials and outside repairs
    709,000,000 528,000,000 667,000,000 591,000,000 646,000,000 626,000,000 627,000,000 684,000,000 679,000,000 572,000,000 661,000,000 614,000,000 585,000,000 508,000,000 487,000,000 522,000,000 465,000,000 387,000,000 433,000,000 287,000,000 294,000,000 204,000,000 106,000,000 43,000,000 469,000,000 417,000,000 424,000,000 434,000,000 476,000,000 342,000,000 371,000,000 427,000,000 435,000,000 496,000,000 503,000,000 475,000,000 518,000,000 466,000,000 462,000,000 446,000,000 449,000,000 418,000,000 479,000,000 499,000,000 452,000,000 474,000,000 440,000,000 466,000,000 448,000,000 415,000,000 474,000,000 472,000,000 491,000,000 353,000,000 493,000,000 548,000,000 561,000,000 367,000,000 428,000,000 485,000,000 485,000,000 395,000,000 405,000,000 395,000,000 374,000,000 284,000,000 334,000,000 392,000,000 424,000,000  273,000,000 295 268,000,000  165,000,000 184,000,000 169,000,000 183,000,000 187,000,000 196,000,000 178,000,000 215,000,000 206,000,000 177,000,000  
      regional carrier expense
    649,000,000 640,000,000 649,000,000 651,000,000 613,000,000 597,000,000 600,000,000 580,000,000 550,000,000 536,000,000 546,000,000 559,000,000 559,000,000 504,000,000 528,000,000 528,000,000 491,000,000 478,000,000 453,000,000 403,000,000 401,000,000                     805,750,000 1,073,000,000 1,097,000,000 1,053,000,000 1,204,000,000 1,353,000,000 1,361,000,000 1,319,000,000 1,367,000,000 1,459,000,000 1,444,000,000                                  
      depreciation and amortization
    635,000,000 620,000,000 614,000,000 602,000,000 607,000,000 635,000,000 643,000,000 620,000,000 615,000,000 610,000,000 594,000,000 573,000,000 564,000,000 553,000,000 538,000,000 510,000,000 506,000,000 504,000,000 501,000,000 501,000,000 492,000,000 499,000,000 545,000,000 591,000,000 678,000,000 621,000,000 631,000,000 713,000,000 615,000,000 549,000,000 580,000,000 590,000,000 610,000,000 586,000,000 574,000,000 535,000,000 540,000,000 472,000,000 474,000,000 470,000,000 486,000,000 451,000,000 466,000,000 448,000,000 470,000,000 438,000,000 440,000,000 451,000,000 442,000,000 420,000,000 418,000,000 415,000,000 405,000,000 399,000,000 392,000,000 388,000,000 386,000,000 382,000,000 384,000,000 381,000,000 376,000,000 372,000,000 375,000,000 379,000,000 385,000,000 384,000,000 385,000,000 383,000,000 384,000,000  293,000,000 302 297,000,000  193,000,000 291,000,000 364,000,000 293,000,000 318,000,000 301,000,000 317,000,000 317,000,000 326,000,000 313,000,000  
      passenger commissions and other selling expenses
    590,000,000 616,000,000 645,000,000 673,000,000 552,000,000 620,000,000 643,000,000 672,000,000 550,000,000 564,000,000 618,000,000 651,000,000 500,000,000 506,000,000 546,000,000 526,000,000 312,000,000 313,000,000 308,000,000 222,000,000 110,000,000 84,000,000 94,000,000 45,000,000 358,000,000 488,000,000 539,000,000 538,000,000 427,000,000 468,000,000 535,000,000 511,000,000 427,000,000 443,000,000 482,000,000 458,000,000 404,000,000 419,000,000 466,000,000 437,000,000 388,000,000 402,000,000 463,000,000 421,000,000 386,000,000 411,000,000 476,000,000 440,000,000 373,000,000 391,000,000 447,000,000 408,000,000 357,000,000 377,000,000 440,000,000 393,000,000 380,000,000 393,000,000 480,000,000 440,000,000 369,000,000 364,000,000 404,000,000 377,000,000 364,000,000 336,000,000 384,000,000 329,000,000 356,000,000  259,000,000 248 225,000,000  175,000,000 220,000,000 209,000,000 233,000,000 234,000,000 212,000,000 418,000,000 152,000,000 186,000,000 192,000,000  
      passenger service
    428,000,000 458,000,000 485,000,000 482,000,000 430,000,000 449,000,000 463,000,000 463,000,000 413,000,000 443,000,000 449,000,000 442,000,000 416,000,000 403,000,000 406,000,000 369,000,000 275,000,000 236,000,000 226,000,000 175,000,000 118,000,000 90,000,000 88,000,000 88,000,000 257,000,000 313,000,000 345,000,000 322,000,000 271,000,000 286,000,000 329,000,000 300,000,000 263,000,000 261,000,000 315,000,000 271,000,000 220,000,000 233,000,000 264,000,000 221,000,000 189,000,000 208,000,000 247,000,000 227,000,000 190,000,000 195,000,000 227,000,000 215,000,000 173,000,000 187,000,000 214,000,000 197,000,000 164,000,000 173,000,000 201,000,000 187,000,000 171,000,000 169,000,000 207,000,000 181,000,000 164,000,000 180,000,000 190,000,000 165,000,000 138,000,000 161,000,000 181,000,000 161,000,000 135,000,000  122,000,000 105 84,000,000  61,000,000 70,000,000 81,000,000 95,000,000 81,000,000 71,000,000 76,000,000 90,000,000 95,000,000 84,000,000  
      mro expense
    328,000,000                                                                                     
      profit sharing
    165,000,000 351,000,000 392,000,000 470,000,000 124,000,000 425,000,000 320,000,000 519,000,000 125,000,000 299,000,000 417,000,000 595,000,000 72,000,000 272,000,000 237,000,000 54,000,000          387,000,000 517,000,000 518,000,000 220,000,000 323,000,000 395,000,000 400,000,000 183,000,000 262,000,000 314,000,000 338,000,000 151,000,000 193,000,000 326,000,000 324,000,000 272,000,000 380,000,000 563,000,000 411,000,000 136,000,000 262,000,000 384,000,000 340,000,000 99,000,000 119,000,000 249,000,000 118,000,000 20,000,000 63,000,000 174,000,000 135,000,000  89,000,000 167,000,000 8,000,000  38,000,000 185,000,000 90,000,000           65,000,000           
      aircraft rent
    143,000,000 134,000,000 135,000,000 137,000,000 137,000,000 137,000,000 137,000,000 138,000,000 136,000,000 137,000,000 131,000,000 132,000,000 132,000,000 128,000,000 131,000,000 127,000,000 122,000,000 117,000,000 105,000,000 104,000,000 104,000,000 104,000,000 99,000,000 96,000,000 100,000,000 105,000,000 110,000,000 107,000,000 102,000,000 103,000,000 99,000,000 97,000,000 94,000,000 92,000,000 89,000,000 86,000,000 84,000,000 81,000,000 72,000,000 66,000,000 66,000,000 67,000,000 63,000,000 60,000,000 60,000,000 61,000,000 65,000,000 56,000,000 51,000,000 47,000,000 47,000,000 55,000,000 60,000,000 64,000,000 65,000,000 68,000,000 75,000,000 74,000,000 72,000,000 74,000,000 78,000,000 82,000,000 92,000,000 101,000,000 112,000,000 117,000,000 123,000,000 119,000,000 121,000,000  70,000,000 67 64,000,000  36,000,000 70,000,000 78,000,000 70,000,000 73,000,000 95,000,000 106,000,000 141,000,000 151,000,000 143,000,000  
      total operating expense
    15,353,000,000 14,536,000,000 14,989,000,000 14,546,000,000 13,471,000,000 13,842,000,000 14,280,000,000 14,391,000,000 13,134,000,000 12,901,000,000 13,504,000,000 13,087,000,000 13,036,000,000 11,965,000,000 12,519,000,000 12,305,000,000 10,131,000,000 9,207,000,000 6,949,000,000 6,310,000,000 5,548,000,000 4,831,000,000 9,448,000,000 6,283,000,000 9,002,000,000 10,040,000,000 10,489,000,000 10,408,000,000 9,452,000,000 9,639,000,000 10,311,000,000 10,095,000,000 9,128,000,000 9,051,000,000 9,221,000,000 8,763,000,000 8,095,000,000 8,438,000,000 8,514,000,000 8,024,000,000 7,711,000,000 7,785,000,000 8,894,000,000 8,233,000,000 7,990,000,000 10,475,000,000 10,343,000,000 9,042,000,000 8,296,000,000 8,375,000,000 8,927,000,000 8,793,000,000 8,278,000,000 8,251,000,000 8,615,000,000 9,598,000,000 8,031,000,000 7,673,000,000 8,956,000,000 8,672,000,000 7,839,000,000 7,495,000,000 7,947,000,000 7,316,000,000 6,780,000,000 6,851,000,000 7,370,000,000 6,999,000,000 7,167,000,000  5,588,000,000 6,586 11,027,000,000  3,103,000,000 3,989,000,000          
      operating income
    501,000,000 1,467,000,000 1,684,000,000 2,102,000,000 569,000,000 1,717,000,000 1,397,000,000 2,267,000,000 614,000,000 1,322,000,000 1,984,000,000 2,491,000,000 -277,000,000 1,470,000,000 1,456,000,000 1,519,000,000 -783,000,000 263,000,000 2,205,000,000 816,000,000 -1,398,000,000 -858,000,000 -6,386,000,000 -4,815,000,000 -410,000,000 1,399,000,000 2,071,000,000 2,128,000,000 1,020,000,000 1,103,000,000 1,642,000,000 1,680,000,000 840,000,000 1,194,000,000 1,839,000,000 2,028,000,000 1,053,000,000 1,020,000,000 1,969,000,000 2,423,000,000 1,540,000,000 1,717,000,000 2,213,000,000 2,474,000,000 1,398,000,000 -828,000,000 835,000,000 1,579,000,000 620,000,000 701,000,000 1,563,000,000 914,000,000 222,000,000 351,000,000 1,308,000,000 134,000,000 382,000,000 726,000,000 860,000,000 481,000,000 -92,000,000 294,000,000 1,003,000,000 852,000,000 68,000,000 -46,000,000 204,000,000 1,000,000 -483,000,000  131,000,000 -1,087 -6,261,000,000  345,000,000 155,000,000 6,000,000 168,000,000 369,000,000 -485,000,000 -675,000,000 -240,000,000 -129,000,000 -957,000,000  
      yoy
    -11.95% -14.56% 20.54% -7.28% -7.33% 29.88% -29.59% -8.99% -321.66% -10.07% 36.26% 63.99% -64.62% 458.94% -33.97% 86.15% -43.99% -130.65% -134.53% -116.95% 240.98% -161.33% -408.35% -326.27% -140.20% 26.84% 26.13% 26.67% 21.43% -7.62% -10.71% -17.16% -20.23% 17.06% -6.60% -16.30% -31.62% -40.59% -11.03% -2.06% 10.16% -307.37% 165.03% 56.68% 125.48% -218.12% -46.58% 72.76% 179.28% 99.72% 19.50% 582.09% -41.88% -51.65% 52.09% -72.14% -515.22% 146.94% -14.26% -43.54% -235.29% -739.13% 391.67% 85100.00% -114.08%  55.73% -92096.32% -92.29%  -62.03% -100.00% -104450.00%  -6.50% -131.96% -100.89% -170.00% -386.05% -49.32%      
      qoq
    -65.85% -12.89% -19.89% 269.42% -66.86% 22.91% -38.38% 269.22% -53.56% -33.37% -20.35% -999.28% -118.84% 0.96% -4.15% -294.00% -397.72% -88.07% 170.22% -158.37% 62.94% -86.56% 32.63% 1074.39% -129.31% -32.45% -2.68% 108.63% -7.52% -32.83% -2.26% 100.00% -29.65% -35.07% -9.32% 92.59% 3.24% -48.20% -18.74% 57.34% -10.31% -22.41% -10.55% 76.97% -268.84% -199.16% -47.12% 154.68% -11.55% -55.15% 71.01% 311.71% -36.75% -73.17% 876.12% -64.92% -47.38% -15.58% 78.79% -622.83% -131.29% -70.69% 17.72% 1152.94% -247.83% -122.55% 20300.00% -100.21%   -12051617.94% -100.00%   122.58% 2483.33% -96.43% -54.47% -176.08% -28.15% 181.25% 86.05% -86.52%   
      operating margin %
    3.16% 9.17% 10.10% 12.63% 4.05% 11.04% 8.91% 13.61% 4.47% 9.29% 12.81% 15.99% -2.17% 10.94% 10.42% 10.99% -8.38% 2.78% 24.09% 11.45% -33.69% -21.60% -208.56% -328.00% -4.77% 12.23% 16.49% 16.98% 9.74% 10.27% 13.74% 14.27% 8.43% 11.65% 16.63% 18.79% 11.51% 10.78% 18.78% 23.19% 16.65% 18.07% 19.92% 23.11% 14.89% -8.58% 7.47% 14.87% 6.95% 7.72% 14.90% 9.42% 2.61% 4.08% 13.18% 1.38% 4.54% 8.64% 8.76% 5.26% -1.19% 3.77% 11.21% 10.43% 0.99% -0.68% 2.69% 0.01% -7.23% NaN% 2.29% -19.77% -131.37% NaN% 10.01% 3.74% 0.14% 3.61% 7.93% -Infinity% -Infinity% -Infinity% -Infinity% -Infinity%  
      non-operating expense:
                                                                                         
      interest expense
    -151,000,000 -158,000,000 -171,000,000 -172,000,000 -179,000,000 -180,000,000 -173,000,000 -188,000,000 -205,000,000 -207,000,000 -196,000,000 -203,000,000 -227,000,000 -238,000,000 -248,000,000 -269,000,000 -274,000,000 -265,000,000 -314,000,000 -338,000,000 -361,000,000 -365,000,000 -291,000,000 -194,000,000 -79,000,000 -73,000,000 -70,000,000 -75,000,000 -83,000,000 -37,000,000 -84,000,000 -89,000,000 -102,000,000 -99,000,000 -100,000,000 -103,000,000 -94,000,000 -93,000,000 -95,000,000 -93,000,000 -107,000,000 -102,000,000 -121,000,000 -127,000,000 -131,000,000 -190,000,000 -140,000,000 -155,000,000 -165,000,000 -172,000,000 -176,000,000 -172,000,000 -178,000,000 -189,000,000 -195,000,000 -207,000,000 -221,000,000 -218,000,000 -229,000,000 -233,000,000 -221,000,000 -224,000,000 -256,000,000 -315,000,000 -326,000,000 -327,000,000 -319,000,000 -324,000,000 -308,000,000  -140,000,000 -141 -147,000,000      -227,000,000 -214,000,000 -199,000,000 -277,000,000 -288,000,000 -268,000,000  
      gain on investments
    -550,000,000 205,000,000 311,000,000 735,000,000 -40,000,000 -246,000,000 350,000,000 -196,000,000 -227,000,000 1,218,000,000 -206,000,000 128,000,000 122,000,000 -170,000,000 -245,000,000 -221,000,000 -147,000,000 -195,000,000 -223,000,000 211,000,000 262,000,000 94,000,000 -95,000,000 8,000,000 -112,000,000                                                             
      loss on extinguishment of debt
    -4,000,000  -6,000,000 -20,000,000  -3,000,000  -32,000,000 -4,000,000  -13,000,000 -29,000,000 -22,000,000  -34,000,000 -41,000,000 -25,000,000 -53,000,000 -183,000,000                           -5,000,000 -134,000,000 -111,000,000 -18,000,000     -106,000,000 -12,000,000   -30,000,000 -5,000,000 -13,000,000 -20,000,000 -31,000,000 -360,000,000    -83,000,000                   
      miscellaneous
    -10,000,000 -1,000,000 -41,000,000 -71,000,000 -30,000,000 -86,000,000 -13,000,000 -78,000,000 -56,000,000 3,000,000 13,000,000 -9,000,000 -41,000,000 -4,000,000 -44,000,000 -16,000,000 -44,000,000 -361,000,000 96,000,000 87,000,000 36,000,000 21,000,000 27,000,000 45,000,000 -6,000,000 -64,000,000 -19,000,000 -64,000,000 -91,000,000 136,000,000 66,000,000 19,000,000 -38,000,000 -5,000,000 66,000,000 -34,000,000 -44,000,000 25,000,000 26,000,000 20,000,000 1,000,000 -82,000,000 -20,000,000 19,000,000 -81,000,000 -170,000,000 32,000,000 3,000,000 -81,000,000 -20,000,000 13,000,000 -15,000,000 1,000,000  -1,000,000 -42,000,000 17,000,000 -9,000,000 -31,000,000 6,000,000 -9,000,000 22,000,000 25,000,000 -72,000,000 -8,000,000 14,000,000 15,000,000 61,000,000 -13,000,000  -62,000,000 40 -9,000,000  9,000,000 29,000,000 -7,000,000 -31,000,000 19,000,000  -250,000     
      total non-operating expense
    -715,000,000    -249,000,000   -494,000,000 -492,000,000 -216,500,000 -463,000,000 -174,000,000 -229,000,000 -350,000,000 -494,000,000 -486,000,000 -417,000,000 -658,000,000 -673,000,000 -40,000,000 -117,000,000 -250,000,000 -473,000,000 -2,199,000,000 -197,000,000   -221,000,000 -74,000,000   -308,000,000 -122,000,000 -104,000,000 -34,000,000 -137,000,000 -138,000,000 -68,000,000 -69,000,000 -73,000,000 -106,000,000                                             
      income before income taxes
    -214,000,000 1,513,000,000 1,777,000,000 2,574,000,000 320,000,000 1,202,000,000 1,561,000,000 1,773,000,000 122,000,000 2,275,000,000 1,521,000,000 2,317,000,000 -506,000,000 1,120,000,000 962,000,000 1,033,000,000 -1,200,000,000 -395,000,000 1,532,000,000 776,000,000 -1,515,000,000 -1,108,000,000 -6,859,000,000 -7,014,000,000 -607,000,000 1,398,000,000 1,947,000,000 1,907,000,000 946,000,000 1,387,000,000 1,674,000,000 1,372,000,000 718,000,000 1,090,000,000 1,805,000,000 1,891,000,000 915,000,000 952,000,000 1,900,000,000 2,350,000,000 1,434,000,000 1,533,000,000 2,072,000,000 2,366,000,000 1,186,000,000 -1,140,000,000 579,000,000 1,298,000,000 335,000,000 475,000,000 1,363,000,000 686,000,000 3,000,000 11,000,000 1,052,000,000 -164,000,000 127,000,000 417,000,000 547,000,000 195,000,000 -389,000,000 20,000,000 366,000,000 468,000,000 -246,000,000 -355,000,000 -179,000,000 -253,000,000 -794,000,000  -50,000,000 -1,163 -6,390,000,000   -130,000,000   -2,201,000,000 -2,090,000,000 -1,137,000,000 -1,107,000,000 -400,000,000 -1,215,000,000  
      income tax provision
    -75,000,000 -294,000,000 -360,000,000 -444,000,000 -80,000,000 -359,000,000 -289,000,000 -468,000,000  -238,000,000 -413,000,000 -490,000,000  -76,250,000 -267,000,000           -300,000,000 -452,000,000 -464,000,000 -216,000,000 -336,000,000 -362,000,000 -347,000,000 -171,000,000 -518,000,000 -627,000,000 -667,000,000 -312,000,000 -330,000,000 -641,000,000 -804,000,000 -488,000,000 -519,500,000 -757,000,000 -881,000,000 -440,000,000                   -1,000,000 -10,000,000                     
      net income
    -289,000,000 1,219,000,000 1,417,000,000 2,130,000,000 240,000,000 843,000,000 1,272,000,000 1,305,000,000 37,000,000 2,037,000,000 1,108,000,000 1,827,000,000 -363,000,000 829,000,000 695,000,000 735,000,000 -940,000,000 -408,000,000 1,212,000,000 652,000,000 -1,177,000,000 -755,000,000 -5,379,000,000 -5,717,000,000 -534,000,000 1,098,000,000 1,495,000,000 1,443,000,000 730,000,000 1,051,000,000 1,312,000,000 1,025,000,000 547,000,000 572,000,000 1,178,000,000 1,224,000,000 603,000,000 622,000,000 1,259,000,000 1,546,000,000 946,000,000 980,000,000 1,315,000,000 1,485,000,000 746,000,000 -712,000,000 357,000,000 801,000,000 213,000,000 8,479,000,000 1,369,000,000 685,000,000 7,000,000 6,000,000 1,047,000,000 -168,000,000 124,000,000 425,000,000 549,000,000 198,000,000 -318,000,000 19,000,000 363,000,000 467,000,000 -256,000,000 -25,000,000 -161,000,000 -257,000,000 -794,000,000  -50,000,000 -1,044 -6,390,000,000  164,000,000 -130,000,000 -1,981,000,000 52,000,000 -2,205,000,000 -2,069,000,000 -1,235,000,000 -1,130,000,000 -382,000,000 -1,071,000,000  
      yoy
    -220.42% 44.60% 11.40% 63.22% 548.65% -58.62% 14.80% -28.57% -110.19% 145.72% 59.42% 148.57% -61.38% -303.19% -42.66% 12.73% -20.14% -45.96% -122.53% -111.40% 120.41% -168.76% -459.80% -496.19% -173.15% 4.47% 13.95% 40.78% 33.46% 83.74% 11.38% -16.26% -9.29% -8.04% -6.43% -20.83% -36.26% -36.53% -4.26% 4.11% 26.81% -237.64% 268.35% 85.39% 250.23% -108.40% -73.92% 16.93% 2942.86% 141216.67% 30.75% -507.74% -94.35% -98.59% 90.71% -184.85% -138.99% 2136.84% 51.24% -57.60% 24.22% -176.00% -325.47% -281.71% -67.76%  222.00% 24616758.24% -87.57%  -130.49% -100.00% 222.56%  -107.44% -93.72% 60.40% -104.60% 477.23% 93.18%      
      qoq
    -123.71% -13.97% -33.47% 787.50% -71.53% -33.73% -2.53% 3427.03% -98.18% 83.84% -39.35% -603.31% -143.79% 19.28% -5.44% -178.19% 130.39% -133.66% 85.89% -155.40% 55.89% -85.96% -5.91% 970.60% -148.63% -26.56% 3.60% 97.67% -30.54% -19.89% 28.00% 87.39% -4.37% -51.44% -3.76% 102.99% -3.05% -50.60% -18.56% 63.42% -3.47% -25.48% -11.45% 99.06% -204.78% -299.44% -55.43% 276.06% -97.49% 519.36% 99.85% 9685.71% 16.67% -99.43% -723.21% -235.48% -70.82% -22.59% 177.27% -162.26% -1773.68% -94.77% -22.27% -282.42% 924.00% -84.47% -37.35% -67.63%   4789172.03% -100.00%   -226.15% -93.44% -3909.62% -102.36% 6.57% 67.53% 9.29% 195.81% -64.33%   
      net income margin %
    -1.82% 7.62% 8.50% 12.79% 1.71% 5.42% 8.11% 7.83% 0.27% 14.32% 7.15% 11.73% -2.85% 6.17% 4.97% 5.32% -10.06% -4.31% 13.24% 9.15% -28.36% -19.00% -175.67% -389.44% -6.22% 9.60% 11.90% 11.51% 6.97% 9.78% 10.98% 8.70% 5.49% 5.58% 10.65% 11.34% 6.59% 6.58% 12.01% 14.80% 10.23% 10.31% 11.84% 13.87% 7.95% -7.38% 3.19% 7.54% 2.39% 93.42% 13.05% 7.06% 0.08% 0.07% 10.55% -1.73% 1.47% 5.06% 5.59% 2.16% -4.10% 0.24% 4.06% 5.72% -3.74% -0.37% -2.13% -3.67% -11.88% NaN% -0.87% -18.99% -134.07% NaN% 4.76% -3.14% -47.87% 1.12% -47.37% -Infinity% -Infinity% -Infinity% -Infinity% -Infinity%  
      basic earnings per share
    -0.44 1.87 2.18 3.28 0.37 1.31 1.98 2.04 0.06 3.18 1.73 2.86  1.3 1.09 1.15  -0.64 1.9 1.02  -1.19 -8.47 -9.01 -0.84 1.71 2.32 2.22 1.1 1.54 1.91 1.47 0.78 0.82 1.64 1.68 0.83 0.87 1.7 2.04 1.22 1.26 1.67 1.85 0.91 -0.84 0.43 0.95 0.25 9.99 1.61 0.81 0.01 0.01 1.24 -0.2 0.15 0.51 0.66 0.24  0.02 0.43 0.56        -2.64     -5.383 0.26        
      diluted earnings per share
    -0.44 1.86 2.17 3.27 0.37 1.29 1.97 2.01 0.06 3.17 1.72 2.84  1.3 1.08 1.15  -0.63 1.89 1.02  -1.19 -8.47 -9.01 -0.84 1.71 2.31 2.21 1.09 1.53 1.91 1.47 0.77 0.82 1.64 1.68 0.82 0.87 1.69 2.03 1.21 1.26 1.65 1.83 0.9 -0.83 0.42 0.94 0.25 9.89 1.59 0.8 0.01 0.01 1.23 -0.2 0.15 0.5 0.65 0.23  0.02 0.43 0.55        -2.64     -5.383 0.22        
      comprehensive income
    -260 976.75 1,458 2,169 281 692 1,321 1,358 89 678.25 1,157 1,872  168.25 757 798  231.5 1,294 730  -2,895 -5,381 -5,756 -443 962.25 1,545 1,515 789 742.5 1,383 1,100 487 791.25 1,251 1,246 668 953.5 1,326 1,546 942 885.25 1,287 1,491 763 350.25 394 803 204 578.5 1,376 780 158 326.25 1,073 -140 372                             
      the accompanying notes are an integral part of these condensed consolidated financial statements.
                                                                                         
      ancillary businesses and refinery
     1,604,000,000 1,724,000,000 1,409,000,000 1,250,000,000 1,333,000,000 1,250,000,000 1,463,000,000 1,370,000,000 745,000,000 1,128,000,000 1,173,000,000 1,125,000,000 1,307,000,000 1,349,000,000 1,718,000,000 1,382,000,000 1,233,000,000 1,079,000,000 939,000,000 706,000,000 604,000,000 561,000,000 401,000,000 219,000,000 300,000,000 279,000,000 316,000,000 351,000,000 299,000,000 410,000,000 494,000,000 493,000,000                                                     
      non-operating income:
                                                                                         
      total non-operating income
     46,000,000 93,000,000 472,000,000  -515,000,000 164,000,000                                                                               
      pilot agreement and related expenses
                864,000,000                                                                         
      income tax benefit
            -85,000,000    143,000,000   -298,000,000 260,000,000 -13,000,000 -320,000,000 -124,000,000 338,000,000 353,000,000 1,480,000,000 1,297,000,000 73,000,000                     428,000,000 -222,000,000 -497,000,000 -122,000,000 8,004,000,000 6,000,000 -1,000,000 4,000,000 -5,000,000 -5,000,000 -4,000,000 -3,000,000 8,000,000 2,000,000 3,000,000 71,000,000 -1,000,000 -3,000,000   330,000,000 18,000,000 -4,000,000    119   -103,000,000  725,000,000 23,000,000 -4,000,000 21,000,000 -98,000,000 -23,000,000 18,000,000 144,000,000  
      pension and related benefit
             -61,000,000 -61,000,000 -61,000,000 -61,000,000 74,000,000 73,000,000 73,000,000 73,000,000                                                                     
      basic loss per share
                -0.57    -1.48    -1.85                                                                 
      diluted loss per share
                -0.57    -1.48    -1.85                                                                 
      comprehensive loss
                -316    -881    -1,099                                                                 
      government grant recognition
                      -1,822,000,000 -1,504,000,000 -1,186,000,000                                                                 
      equity method results
                 -2,000,000 4,000,000 -12,000,000                                                                      
      restructuring charges
                    -5,000,000 -16,000,000 33,000,000 8,000,000 -44,000,000 421,000,000 5,345,000,000 2,454,000,000                                                              
      cash dividends declared per share
                            0.4 0.41 0.4 0.35 0.35 0.35 0.35 0.31 0.31 0.31 0.31 0.2 0.2 0.208 0.203 0.135 0.135 0.135 0.135 0.09 0.09 0.09 0.09 0.06 0.06                                     
      impairments and equity method losses
                     -235,000,000 -49,000,000  -54,000,000   -2,058,000,000                                                              
      regional carriers expense, excluding fuel
                         591,000,000 488,000,000 497,000,000 902,000,000 886,000,000 900,000,000 905,000,000 893,000,000 795,000,000 903,000,000 883,000,000 856,000,000                                                     
      cares act grant recognition
                         -648,750,000 -1,315,000,000 -1,280,000,000                                                              
      impairments and equity method gains
                         -608,000,000 -114,000,000                                                               
      non-operating (expense)/income:
                                                                                         
      unrealized gain/(loss) on investments
                             -4,250,000 -35,000,000 -82,000,000  185,000,000 50,000,000 -238,000,000 18,000,000                                                     
      total non-operating (expense)/income
                             -104,750,000 -124,000,000                                                           
      unrealized gain on investments
                                100,000,000                                                         
      non-operating income/
                                                                                         
      total non-operating income/(expense)
                                 -99,250,000 32,000,000                                                       
      passenger:
                                                                                         
      mainline
                                     7,078,000,000 7,924,000,000 7,699,000,000 6,404,000,000 6,575,000,000 7,615,000,000 7,471,000,000 6,444,000,000 6,703,000,000 8,059,000,000 7,587,000,000 6,549,000,000 6,738,000,000 8,144,000,000 7,582,000,000 6,224,000,000 6,312,000,000 7,566,000,000 6,796,000,000 5,876,000,000 5,914,000,000 7,017,000,000 6,644,000,000 5,675,000,000 5,666,000,000 6,857,000,000 6,207,000,000 5,134,000,000 5,238,000,000 6,204,000,000 5,480,000,000 4,486,000,000 4,469,000,000 5,122,000,000 4,564,000,000 4,367,000,000  3,921,000,000 3,627 3,061,000,000  2,338,000,000 2,796,000,000 2,781,000,000 3,227,000,000 3,193,000,000 2,572,000,000 2,183,750,000 3,041,000,000 3,045,000,000 2,649,000,000  
      regional carriers
                                     1,423,000,000 1,475,000,000 1,532,000,000 1,284,000,000 1,399,000,000 1,456,000,000 1,499,000,000 1,318,000,000 1,422,000,000 1,536,000,000 1,552,000,000 1,374,000,000 1,497,000,000 1,632,000,000 1,684,000,000 1,453,000,000 1,562,000,000 1,688,000,000 1,698,000,000 1,457,000,000 1,524,000,000 1,675,000,000 1,807,000,000 1,551,000,000 1,557,000,000 1,711,000,000 1,684,000,000 1,441,000,000 1,430,000,000 1,571,000,000 1,529,000,000 1,320,000,000 1,310,000,000 1,402,000,000 1,339,000,000 1,234,000,000                 
      total passenger revenue
                                     8,501,000,000 9,399,000,000 9,231,000,000 7,688,000,000 7,974,000,000 9,071,000,000 8,970,000,000 7,762,000,000 8,125,000,000 9,595,000,000 9,139,000,000 7,923,000,000 8,235,000,000 9,776,000,000 9,266,000,000 7,677,000,000 7,874,000,000 9,254,000,000 8,494,000,000 7,333,000,000 7,438,000,000 8,692,000,000 8,451,000,000 7,226,000,000 7,223,000,000 8,568,000,000 7,891,000,000 6,575,000,000 6,668,000,000 7,775,000,000 7,009,000,000 5,806,000,000 5,779,000,000 6,524,000,000 5,903,000,000 5,601,000,000                 
      regional carriers expense
                                     1,156,000,000 1,156,000,000 1,081,000,000 1,110,000,000 1,090,000,000 1,119,000,000 1,096,000,000 1,006,000,000                                             
      restructuring and other items
                                             8,750,000  25,000,000 10,000,000 67,000,000 570,000,000 30,000,000 49,000,000 160,000,000 106,000,000 34,000,000 102,000,000 122,000,000 149,000,000 193,000,000 -12,000,000 88,000,000 3,000,000 144,000,000 7,000,000                         
      other expense:
                                                                                         
      total other expense
                                             -115,250,000 -141,000,000 -108,000,000 -212,000,000 -312,000,000 -256,000,000 -281,000,000 -285,000,000 -226,000,000 -200,000,000 -228,000,000  -340,000,000 -256,000,000 -298,000,000 -255,000,000   -286,000,000 -297,000,000 -274,000,000 -637,000,000 -384,000,000 -314,000,000 -309,000,000 -383,000,000 -254,000,000 -311,000,000  -181,000,000 -76 -129,000,000  -78,000,000 -161,000,000 -191,000,000 -237,000,000 -190,000,000 -202,000,000 -197,250,000 -260,000,000 -271,000,000 -258,000,000  
      other income:
                                                                                         
      amortization of debt discount
                                                 -13,250,000 -14,000,000 -18,000,000 -21,000,000 -34,000,000 -37,000,000 -41,000,000 -42,000,000 -45,000,000 -48,000,000 -49,000,000 -51,000,000 -52,000,000 -48,000,000 -46,000,000 -47,000,000 -46,000,000 -53,000,000                       
      contract carrier arrangements
                                                        1,399,000,000 1,409,000,000 1,447,000,000 1,416,000,000 1,375,000,000 1,328,000,000 1,432,000,000 1,410,000,000 1,300,000,000 1,180,000,000 1,236,000,000 972,000,000 917,000,000 941,000,000 1,009,000,000 965,000,000 908,000,000  905,000,000 931 896,000,000  530,000,000 717,000,000 663,000,000 724,000,000 660,000,000 609,000,000 590,000,000 313,000,000 211,000,000 204,000,000  
      total other income
                                                        -219,000,000     -224,250,000 -313,000,000                           
      basic and diluted loss per share
                                                                -0.38    -0.31 -0.368 -0.19 -0.31 -0.96    -16.15   -0.66   -11.18 -10.68 -6.68 -6.73 -2.64 -7.64  
      restructuring and merger-related items
                                                                 108,000,000 206,000,000 82,000,000 54,000,000 121,000,000 129,000,000 58,000,000 99,000,000  24,000,000               
      interest income
                                                                 5,000,000 7,000,000 3,000,000 20,000,000 4,000,000 4,000,000 9,000,000 10,000,000  21,000,000 25 27,000,000  33,000,000 10,000,000 23,000,000 16,000,000 18,000,000 12,000,000 14,000,000 17,000,000 14,000,000 14,000,000  
      impairment of goodwill and other intangible assets
                                                                                         
      impairment of goodwill
                                                                           839 6,100,000,000             
      income taxes
                                                                                         
      regional affiliates
                                                                          1,057,000,000 1,143 1,039,000,000  760,000,000 947,000,000 944,000,000 1,016,000,000 1,035,000,000 858,000,000 592,500,000 850,000,000 830,000,000 690,000,000  
      impairment of intangible assets
                                                                           357              
      income before reorganization items
                                                                          -50,000,000 -1,163              
      reorganization items
                                                                               -124,000,000 -2,521,000,000 98,000,000 -2,380,000,000 -1,403,000,000 -277,000,000 -607,000,000    
      basic income per share
                                                                          -0.13    0.42           
      diluted income per share
                                                                          -0.13    0.42           
      restructuring and related items
                                                                           104 16,000,000             
      loss before reorganization items
                                                                            -6,390,000,000   -6,000,000 -185,000,000 -69,000,000  -687,000,000 -860,000,000 -500,000,000    
      interest expense (contractual interest expense totaled 88 and 366 for the
                                                                                         
      one month and four months ended april 30, 2007, respectively, and 306
                                                                                         
      and 615 for the three and six months ended june 30, 2006, respectively)
                                                                              -120,000,000           
      income (loss) before reorganization
                                                                                         
      items
                                                                              267,000,000           
      income (loss) before income taxes
                                                                              267,000,000  -1,065,500,000 29,000,000        
      preferred stock dividends
                                                                                   -2,000,000 -3,000,000 -4,000,000 -6,000,000 -5,000,000  
      net income attributable to
                                                                                         
      common shareowners
                                                                              164,000,000           
      aircraft fuel
                                                                               920,000,000 1,037,000,000 1,242,000,000 1,111,000,000 929,000,000 1,130,000,000 1,203,000,000 1,054,000,000 884,000,000  
      interest expense (contractual interest expense equals 412 and 309
                                                                                         
      for the three months ended march 31, 2007 and 2006, respectively)
                                                                               -200,000,000          
      net loss attributable to common
                                                                                         
      shareowners
                                                                               -130,000,000          
      operating expenses:
                                                                                         
      restructuring, asset writedowns, pension settlements and related items
                                                                                -4,000,000 -2,000,000 10,000,000 9,000,000      
      total operating expenses
                                                                                3,245,250,000 4,491,000,000 4,286,000,000 4,204,000,000 3,343,500,000 4,456,000,000 4,314,000,000 4,604,000,000  
      interest expense (contractual interest expense totaled 299 and 914
                                                                                         
      for the three and nine months ended september 30, 2006, respectively, and 298 and 859 for the three and nine months ended september 30, 2005, respectively)
                                                                                -165,750,000 -222,000,000        
      net income attributable to common shareowners
                                                                                -1,056,000,000 52,000,000        
      income (loss) before reorganization items
                                                                                  179,000,000       
      net loss attributable to common shareowners
                                                                                  -2,205,000,000 -2,071,000,000 -1,238,000,000 -1,134,000,000 -388,000,000 -1,076,000,000  
      operating revenues:
                                                                                         
      total operating revenues
                                                                                   3,719,000,000 3,012,000,000 4,216,000,000 4,185,000,000 3,647,000,000  
      pension settlements, asset writedowns, restructuring and related items
                                                                                    178,000,000 85,000,000 96,000,000 531,000,000  
      weighted-average shares used for eps calculation
                                                                                     168,433,862 146,820,375 140,924,006  
      miscellaneous income
                                                                                      3,000,000   
      fair value adjustments of sfas 133 derivatives
                                                                                       -2,000,000  
      miscellaneous expense
                                                                                       -2,000,000  
    Balance Sheets:
    Quarterly
    Annual
      Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-12-31 2014-09-30 2014-06-30 2014-03-31 2013-12-31 2013-09-30 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-06-30 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-31 2010-12-31 2010-09-30 2010-06-30 2010-03-31 2009-12-31 2009-09-30 2009-06-30 2009-03-31 2008-12-31 2008-09-30 2008-06-30 2008-03-31 2007-12-31 2007-06-30 2007-04-30 2007-03-31 2006-12-31 2006-09-30 2006-06-30 2006-03-31 2005-12-31 2005-09-30 2005-06-30 2005-03-31 2004-12-31 
                                                                                            
        assets
                                                                                            
        current assets:
                                                                                            
        cash and cash equivalents
      5,053,000,000 4,310,000,000 3,791,000,000 3,331,000,000 3,711,000,000 3,069,000,000 3,969,000,000 4,110,000,000 3,877,000,000 2,741,000,000 2,835,000,000 2,668,000,000 3,215,000,000 3,266,000,000 7,023,000,000 9,221,000,000 7,705,000,000 7,933,000,000 8,785,000,000 10,357,000,000 8,460,000,000 8,307,000,000 16,477,000,000 11,366,000,000 5,967,000,000 2,882,000,000 1,899,000,000 2,009,000,000 1,910,000,000 1,565,000,000 1,380,000,000 1,886,000,000 1,447,000,000 1,814,000,000 1,478,000,000 2,241,000,000 1,907,000,000 2,762,000,000 1,638,000,000 1,662,000,000 1,708,000,000 1,972,000,000 2,369,000,000 2,293,000,000 2,122,000,000 2,088,000,000 2,510,000,000 3,362,000,000 2,699,000,000 2,844,000,000 3,018,000,000 2,965,000,000 2,636,000,000 2,416,000,000 2,274,000,000 2,539,000,000 2,911,000,000 2,657,000,000 2,307,000,000 2,855,000,000 2,881,000,000 2,892,000,000 3,436,000,000 4,434,000,000 4,913,000,000 4,607,000,000 5,396,000,000 4,851,000,000 4,441,000,000 4,255,000,000 2,160,000,000 3,239,000,000 2,492,000,000 2,648,000,000 1,830,000,000  2,093,000,000 2,034,000,000 2,283,000,000 2,431,000,000 2,429,000,000 2,008,000,000 1,361,000,000 1,341,000,000 1,646,000,000 1,463,000,000 
        accounts receivable
      4,090,000,000  3,612,000,000 3,755,000,000 3,652,000,000  3,550,000,000 3,812,000,000 3,748,000,000  3,214,000,000 3,122,000,000 3,224,000,000  3,097,000,000 3,093,000,000 3,039,000,000                                                      1,240,000,000 1,418,000,000    1,086,000,000           
        fuel, expendable parts and supplies inventories, net of allowance for obsolescence of 132 and 124
      1,767,000,000                                                                                      
        prepaid expenses and other
      2,753,000,000 2,207,000,000 2,284,000,000 2,371,000,000 2,387,000,000 2,123,000,000 2,068,000,000 2,056,000,000 1,913,000,000 1,957,000,000 2,529,000,000 2,484,000,000 2,187,000,000 1,877,000,000 1,861,000,000 1,716,000,000 1,434,000,000 1,119,000,000 1,074,000,000 1,173,000,000 1,153,000,000 1,180,000,000 1,256,000,000 1,025,000,000 1,054,000,000 1,262,000,000 1,137,000,000 1,198,000,000 1,061,000,000 1,203,000,000 1,181,000,000 1,219,000,000 2,040,000,000 1,499,000,000 1,110,000,000 1,087,000,000 1,068,000,000 854,000,000 910,000,000 1,017,000,000 887,000,000 796,000,000 816,000,000 815,000,000 790,000,000 733,000,000 1,220,000,000 1,221,000,000 1,209,000,000 1,318,000,000 1,355,000,000 1,302,000,000 1,304,000,000 1,344,000,000 1,876,000,000 1,882,000,000 1,475,000,000 1,418,000,000 1,067,000,000 1,179,000,000 1,286,000,000 1,159,000,000 1,071,000,000 859,000,000 976,000,000 846,000,000 780,000,000 898,000,000 627,000,000 637,000,000 597,000,000 590,000,000 774,000,000 464,000,000 420,000,000 437,000,000 572,000,000 489,000,000 875,000,000 759,000,000 562,000,000 512,000,000 613,000,000 605,000,000 554,000,000 525,000,000 
        total current assets
      13,663,000,000 10,968,000,000 11,230,000,000 10,982,000,000 11,236,000,000 9,844,000,000 11,062,000,000 11,588,000,000 11,579,000,000 10,269,000,000 12,255,000,000 13,080,000,000 13,401,000,000 13,011,000,000 14,799,000,000 17,313,000,000 15,720,000,000 15,940,000,000 17,471,000,000 19,666,000,000 17,853,000,000 17,404,000,000 25,030,000,000 18,915,000,000 10,275,000,000 8,249,000,000 6,944,000,000 7,134,000,000 7,196,000,000 6,340,000,000 6,726,000,000 7,641,000,000 7,724,000,000 7,844,000,000 7,083,000,000 7,177,000,000 6,880,000,000 7,451,000,000 7,329,000,000 7,638,000,000 9,306,000,000 9,056,000,000 11,973,000,000 11,441,000,000 12,266,000,000 12,465,000,000 10,995,000,000 10,517,000,000 9,746,000,000 9,651,000,000 8,951,000,000 8,895,000,000 8,641,000,000 8,272,000,000 8,163,000,000 8,457,000,000 8,299,000,000 7,729,000,000 7,329,000,000 8,063,000,000 7,993,000,000 7,307,000,000 7,321,000,000 7,868,000,000 8,361,000,000 7,741,000,000 8,862,000,000 8,299,000,000 8,057,000,000 8,904,000,000 5,488,000,000 7,167,000,000 5,329,000,000 5,240,000,000 6,249,000,000 6,131,000,000 6,134,000,000 5,385,000,000 5,881,000,000 5,902,000,000 5,107,000,000  4,283,000,000 3,786,000,000 3,841,000,000  
        noncurrent assets:
                                                                                            
        property and equipment
      40,582,000,000 39,743,000,000 39,372,000,000 38,926,000,000 38,171,000,000 37,595,000,000 36,862,000,000 36,339,000,000 35,915,000,000 35,486,000,000 34,593,000,000 34,092,000,000 33,249,000,000 33,109,000,000 31,512,000,000 30,519,000,000 30,042,000,000 28,749,000,000 27,816,000,000 27,508,000,000 26,862,000,000 26,529,000,000 26,602,000,000 28,473,000,000 31,644,000,000 31,310,000,000 30,796,000,000 30,165,000,000 29,139,000,000 28,335,000,000 28,565,000,000 28,124,000,000 27,096,000,000 26,563,000,000 25,900,000,000 25,367,000,000 24,817,000,000 24,375,000,000 24,105,000,000 23,975,000,000 23,422,000,000 23,039,000,000 22,608,000,000 22,480,000,000 22,023,000,000 21,929,000,000 21,722,000,000 22,048,000,000 21,972,000,000 21,854,000,000 21,297,000,000 21,049,000,000 20,793,000,000 20,713,000,000 20,599,000,000 20,609,000,000 20,332,000,000 20,223,000,000    20,307,000,000 20,184,000,000 20,396,000,000 20,481,000,000 20,433,000,000 20,658,000,000 20,916,000,000 20,896,000,000 20,627,000,000                 
        operating lease right-of-use assets
      6,300,000,000 6,244,000,000 6,198,000,000 6,335,000,000 6,542,000,000 6,644,000,000 6,686,000,000 6,808,000,000 6,785,000,000 7,004,000,000 6,962,000,000 6,834,000,000 7,067,000,000 7,036,000,000 6,961,000,000 7,189,000,000 7,402,000,000 7,237,000,000 5,827,000,000 5,653,000,000 5,577,000,000 5,733,000,000 5,881,000,000 5,650,000,000 5,488,000,000 5,627,000,000 5,815,000,000 5,906,000,000 6,036,000,000 5,994,000,000                                                         
        goodwill
      9,753,000,000 9,753,000,000 9,753,000,000 9,753,000,000 9,753,000,000 9,753,000,000 9,753,000,000 9,753,000,000 9,753,000,000 9,753,000,000 9,753,000,000 9,753,000,000 9,753,000,000 9,753,000,000 9,753,000,000 9,753,000,000 9,753,000,000 9,753,000,000 9,753,000,000 9,753,000,000 9,753,000,000 9,753,000,000 9,753,000,000 9,753,000,000 9,753,000,000 9,781,000,000 9,781,000,000 9,781,000,000 9,781,000,000 9,781,000,000 9,794,000,000 9,794,000,000 9,794,000,000 9,794,000,000 9,794,000,000 9,794,000,000 9,794,000,000 9,794,000,000 9,794,000,000 9,794,000,000 9,794,000,000 9,794,000,000 9,794,000,000 9,794,000,000 9,794,000,000 9,794,000,000 9,794,000,000 9,794,000,000 9,794,000,000 9,794,000,000 9,794,000,000 9,794,000,000 9,794,000,000 9,794,000,000 9,794,000,000 9,794,000,000 9,794,000,000 9,794,000,000 9,794,000,000 9,794,000,000 9,794,000,000 9,794,000,000 9,794,000,000 9,794,000,000 9,794,000,000 9,787,000,000 9,778,000,000 9,737,000,000 9,729,000,000 9,731,000,000 5,168,000,000 5,169,000,000 6,010,000,000 12,104,000,000 12,373,000,000 227,000,000 227,000,000 227,000,000 227,000,000 227,000,000 227,000,000 227,000,000 227,000,000 227,000,000 227,000,000 227,000,000 
        identifiable intangibles, net of accumulated amortization of 930 and 928
      5,964,000,000                                                                                      
        equity investments
      3,696,000,000 4,222,000,000 3,883,000,000 3,556,000,000 2,819,000,000 2,846,000,000 3,272,000,000 3,022,000,000 3,247,000,000 3,457,000,000 2,291,000,000 2,389,000,000 2,249,000,000 2,128,000,000 1,585,000,000 1,771,000,000 1,999,000,000 1,712,000,000 1,919,000,000 2,143,000,000 1,929,000,000 1,665,000,000 1,562,000,000 1,633,000,000 3,684,000,000                                                              
        other noncurrent assets
      4,473,000,000 4,421,000,000 3,219,000,000 2,873,000,000 2,849,000,000 2,715,000,000 1,756,000,000 1,708,000,000 1,709,000,000 1,692,000,000 1,408,000,000 1,361,000,000 993,000,000 934,000,000 1,057,000,000 1,044,000,000 1,299,000,000 1,300,000,000 1,467,000,000 1,493,000,000 1,571,000,000 1,357,000,000 1,249,000,000 1,481,000,000 1,420,000,000 3,766,000,000 4,309,000,000 3,815,000,000 3,844,000,000 3,608,000,000 3,437,000,000 3,268,000,000 3,446,000,000 3,309,000,000 2,878,000,000 2,545,000,000 2,363,000,000 1,733,000,000 1,722,000,000 1,578,000,000 1,475,000,000 1,428,000,000 1,848,000,000 1,098,000,000 1,019,000,000 1,010,000,000 1,119,000,000 1,105,000,000 1,159,000,000 1,303,000,000 1,280,000,000 1,342,000,000 1,131,000,000 1,092,000,000 1,099,000,000 1,144,000,000 1,031,000,000 1,002,000,000 960,000,000 992,000,000 1,030,000,000 1,031,000,000 1,088,000,000 965,000,000 898,000,000 749,000,000 691,000,000 640,000,000 795,000,000 808,000,000 591,000,000 624,000,000 720,000,000 572,000,000 725,000,000 740,000,000 834,000,000 948,000,000 1,132,000,000 923,000,000 1,127,000,000 932,000,000 1,048,000,000 1,020,000,000 1,066,000,000 1,206,000,000 
        total noncurrent assets
      70,768,000,000 70,349,000,000 68,393,000,000 67,413,000,000 66,106,000,000 65,528,000,000 64,306,000,000 63,609,000,000 63,390,000,000 63,375,000,000 60,992,000,000 60,417,000,000 59,733,000,000 59,277,000,000 57,797,000,000 57,492,000,000 58,028,000,000 56,519,000,000 55,312,000,000 55,643,000,000 55,230,000,000 54,592,000,000 54,046,000,000 53,346,000,000 58,463,000,000 56,283,000,000 56,275,000,000 55,384,000,000 54,645,000,000 53,926,000,000                                                         
        total assets
      84,431,000,000 81,317,000,000 79,623,000,000 78,395,000,000 77,342,000,000 75,372,000,000 75,368,000,000 75,197,000,000 74,969,000,000 73,644,000,000 73,247,000,000 73,497,000,000 73,134,000,000 72,288,000,000 72,596,000,000 74,805,000,000 73,748,000,000 72,459,000,000 72,783,000,000 75,309,000,000 73,083,000,000 71,996,000,000 79,076,000,000 72,261,000,000 68,738,000,000 64,532,000,000 63,219,000,000 62,518,000,000 61,841,000,000 60,266,000,000 55,003,000,000 55,796,000,000 54,078,000,000 53,292,000,000 51,928,000,000 51,815,000,000 51,459,000,000 51,261,000,000 50,948,000,000 51,634,000,000 53,342,000,000 53,134,000,000 53,646,000,000 52,781,000,000 53,752,000,000 54,121,000,000 51,940,000,000 52,191,000,000 52,167,000,000 52,252,000,000 45,997,000,000 45,772,000,000 45,068,000,000 44,550,000,000 44,352,000,000 44,720,000,000 44,189,000,000 43,499,000,000 43,036,000,000 43,878,000,000 43,881,000,000 43,188,000,000 43,153,000,000 43,809,000,000 44,339,000,000 43,539,000,000 44,853,000,000 44,480,000,000 44,395,000,000 45,014,000,000 25,598,000,000 27,651,000,000 26,755,000,000 32,423,000,000 33,734,000,000 19,771,000,000 19,811,000,000 19,622,000,000 20,681,000,000 20,737,000,000 20,558,000,000 20,039,000,000 20,215,000,000 21,561,000,000 21,737,000,000 21,801,000,000 
        liabilities and stockholders' equity
                                                                                            
        current liabilities:
                                                                                            
        current maturities of debt and finance leases
      3,088,000,000 1,605,000,000 2,106,000,000 2,220,000,000 2,938,000,000 2,175,000,000 3,324,000,000 2,950,000,000 2,809,000,000 2,983,000,000 1,981,000,000 2,065,000,000 2,136,000,000 2,359,000,000 2,031,000,000 1,936,000,000 1,116,000,000 1,782,000,000 2,296,000,000 2,372,000,000 2,983,000,000 1,732,000,000 5,045,000,000 5,230,000,000 4,337,000,000 2,287,000,000                                                             
        current maturities of operating leases
      837,000,000 809,000,000 743,000,000 745,000,000 752,000,000 763,000,000 772,000,000 775,000,000 742,000,000 759,000,000 728,000,000 699,000,000 724,000,000 714,000,000 738,000,000 726,000,000 744,000,000 703,000,000 636,000,000 638,000,000 653,000,000 678,000,000 714,000,000 732,000,000 768,000,000 801,000,000 844,000,000 841,000,000 941,000,000 955,000,000                                                         
        air traffic liability
      10,742,000,000 7,157,000,000 8,165,000,000 8,893,000,000 10,023,000,000 7,094,000,000 8,302,000,000 9,437,000,000 10,193,000,000 7,044,000,000 8,738,000,000 10,422,000,000 11,187,000,000 8,160,000,000 8,947,000,000 9,664,000,000 8,809,000,000 6,228,000,000 6,246,000,000 6,798,000,000 5,105,000,000 4,044,000,000 4,379,000,000 4,686,000,000 5,598,000,000 5,116,000,000 5,762,000,000 6,616,000,000 6,600,000,000 4,661,000,000 5,535,000,000 6,360,000,000 6,233,000,000 4,888,000,000 5,528,000,000 6,365,000,000 6,410,000,000 4,626,000,000 5,142,000,000 5,955,000,000 5,988,000,000 4,503,000,000 5,231,000,000 6,039,000,000 5,866,000,000 4,296,000,000 4,992,000,000 5,803,000,000 5,643,000,000 4,122,000,000 4,583,000,000 5,310,000,000 4,920,000,000 3,696,000,000 4,264,000,000 5,006,000,000 4,729,000,000 3,480,000,000 4,072,000,000 5,001,000,000 4,541,000,000 3,306,000,000 3,767,000,000 4,557,000,000 3,992,000,000 3,074,000,000 3,363,000,000 3,852,000,000 3,625,000,000 3,315,000,000 2,460,000,000 3,064,000,000 2,734,000,000 1,982,000,000 2,684,000,000 2,567,000,000 2,437,000,000 1,797,000,000 2,053,000,000 2,470,000,000 2,347,000,000 1,712,000,000 1,950,000,000 2,221,000,000 2,149,000,000 1,567,000,000 
        accounts payable
      5,969,000,000 5,226,000,000 5,022,000,000 5,063,000,000 4,809,000,000 4,650,000,000 4,545,000,000 4,876,000,000 4,541,000,000 4,446,000,000 5,320,000,000 5,114,000,000 4,754,000,000 5,106,000,000 4,958,000,000 5,353,000,000 4,810,000,000 4,240,000,000 4,017,000,000 3,930,000,000 3,432,000,000 2,840,000,000 2,403,000,000 2,332,000,000 3,337,000,000 3,266,000,000 3,470,000,000 3,359,000,000 3,214,000,000 2,976,000,000 3,265,000,000 3,749,000,000 3,351,000,000 3,674,000,000 3,059,000,000 2,726,000,000 2,353,000,000 2,572,000,000 2,567,000,000 2,956,000,000 2,732,000,000 2,743,000,000 2,688,000,000 2,803,000,000 2,492,000,000 2,622,000,000 2,577,000,000 2,536,000,000 2,341,000,000 2,300,000,000 2,592,000,000 2,571,000,000 2,405,000,000 2,293,000,000 2,325,000,000 2,175,000,000 1,998,000,000 1,600,000,000 1,641,000,000 1,900,000,000 1,907,000,000 1,713,000,000 1,661,000,000 1,630,000,000 1,505,000,000 1,249,000,000 1,483,000,000 1,580,000,000 1,648,000,000 1,604,000,000 347,000,000 347,000,000 322,000,000 1,045,000,000 1,288,000,000  884,000,000 936,000,000         
        accrued salaries and related benefits
      3,634,000,000 4,906,000,000 4,434,000,000 3,822,000,000 3,333,000,000 4,762,000,000 4,105,000,000 3,655,000,000 3,037,000,000 4,561,000,000 4,003,000,000 3,340,000,000 2,828,000,000 3,288,000,000 2,796,000,000 2,565,000,000 2,288,000,000 2,457,000,000 2,198,000,000 2,215,000,000 2,182,000,000 2,086,000,000 1,904,000,000 1,809,000,000 1,844,000,000 3,701,000,000 3,119,000,000 2,617,000,000 2,037,000,000 3,287,000,000 2,852,000,000 2,436,000,000 1,915,000,000 3,022,000,000 2,683,000,000 2,259,000,000 1,835,000,000 2,924,000,000 2,628,000,000 2,237,000,000 1,903,000,000 3,195,000,000 2,790,000,000 2,112,000,000 1,622,000,000 2,266,000,000 2,299,000,000 1,802,000,000 1,455,000,000 1,926,000,000 1,769,000,000 1,414,000,000 1,223,000,000 1,680,000,000 1,491,000,000 1,229,000,000 1,071,000,000 1,367,000,000 1,203,000,000 1,086,000,000 996,000,000 1,370,000,000 1,280,000,000 1,111,000,000 1,010,000,000 1,037,000,000 1,027,000,000 1,019,000,000 1,004,000,000 972,000,000 572,000,000 547,000,000 565,000,000 734,000,000 621,000,000  361,000,000 405,000,000 408,000,000 390,000,000 401,000,000 435,000,000 435,000,000 1,151,000,000 1,195,000,000 1,151,000,000 
        loyalty program deferred revenue
      5,010,000,000 4,876,000,000 4,654,000,000 4,498,000,000 4,425,000,000 4,314,000,000 4,122,000,000 4,038,000,000 4,018,000,000 3,908,000,000 3,917,000,000 3,824,000,000 3,685,000,000 3,434,000,000 3,478,000,000 2,994,000,000 3,038,000,000 2,710,000,000 2,619,000,000 2,757,000,000 2,439,000,000 1,777,000,000 1,284,000,000 1,195,000,000 1,099,000,000 3,219,000,000 3,200,000,000 3,048,000,000 3,013,000,000 2,989,000,000                                                         
        fuel card obligation
      1,100,000,000 1,100,000,000 1,100,000,000 1,100,000,000 1,100,000,000 1,100,000,000 1,100,000,000 1,100,000,000 1,100,000,000 1,100,000,000 1,100,000,000 1,100,000,000 1,100,000,000 1,100,000,000 1,100,000,000 1,100,000,000 1,100,000,000 1,100,000,000 1,100,000,000 1,100,000,000 1,100,000,000 1,100,000,000 1,100,000,000 839,000,000 1,100,000,000 736,000,000 439,000,000 1,067,000,000 1,066,000,000 1,075,000,000 1,066,000,000 1,062,000,000 1,062,000,000 1,067,000,000             603,000,000 603,000,000 604,000,000 602,000,000 545,000,000 604,000,000 604,000,000 455,000,000 391,000,000 476,000,000 489,000,000                              
        other accrued liabilities
      2,319,000,000 1,945,000,000 2,025,000,000 2,213,000,000 2,319,000,000 1,812,000,000 1,848,000,000 1,928,000,000 2,038,000,000 1,617,000,000 1,769,000,000 1,918,000,000 2,003,000,000 1,779,000,000 1,822,000,000 1,986,000,000 2,155,000,000 1,746,000,000 1,812,000,000 3,763,000,000 2,794,000,000 1,670,000,000 2,896,000,000 3,327,000,000 1,309,000,000 1,078,000,000 1,181,000,000 1,335,000,000 1,397,000,000 1,117,000,000 1,329,000,000 1,521,000,000 2,404,000,000 1,858,000,000 2,243,000,000 2,457,000,000 2,619,000,000 1,650,000,000 1,366,000,000 1,503,000,000 1,719,000,000 1,306,000,000 1,379,000,000 1,468,000,000 1,991,000,000 2,127,000,000 902,000,000 768,000,000 837,000,000 1,121,000,000 571,000,000 754,000,000 873,000,000 1,128,000,000 985,000,000 1,641,000,000 1,041,000,000 1,867,000,000 861,000,000 727,000,000 613,000,000 654,000,000 608,000,000 699,000,000 745,000,000 626,000,000 457,000,000 471,000,000 539,000,000 535,000,000 1,122,000,000 887,000,000 817,000,000 115,000,000 159,000,000  246,000,000 265,000,000         
        total current liabilities
      32,699,000,000 27,624,000,000 28,249,000,000 28,554,000,000 29,699,000,000 26,670,000,000 28,118,000,000 28,759,000,000 28,478,000,000 26,418,000,000 27,556,000,000 28,482,000,000 28,417,000,000 25,940,000,000 25,870,000,000 26,324,000,000 24,060,000,000 20,966,000,000 20,924,000,000 23,573,000,000 20,688,000,000 15,927,000,000 19,725,000,000 20,150,000,000 19,392,000,000 20,204,000,000 20,211,000,000 21,164,000,000 21,323,000,000 18,578,000,000 18,158,000,000 19,269,000,000 20,012,000,000 18,573,000,000 16,496,000,000 16,631,000,000 15,953,000,000 15,239,000,000 15,147,000,000 16,250,000,000 18,108,000,000 17,526,000,000 17,608,000,000 17,082,000,000 17,319,000,000 16,879,000,000 14,813,000,000 15,209,000,000 15,010,000,000 14,152,000,000 14,134,000,000 14,775,000,000 14,068,000,000 13,270,000,000 13,224,000,000 14,693,000,000 13,646,000,000 12,701,000,000 12,012,000,000 12,802,000,000 12,260,000,000 11,385,000,000 11,820,000,000 11,892,000,000 11,224,000,000 9,797,000,000 9,594,000,000 11,149,000,000 11,527,000,000 11,022,000,000 6,788,000,000 8,132,000,000 6,671,000,000 6,605,000,000 7,731,000,000 8,239,000,000 7,999,000,000 5,769,000,000 6,113,000,000 6,470,000,000 6,314,000,000  4,960,000,000 6,921,000,000 6,809,000,000  
        noncurrent liabilities:
                                                                                            
        debt and finance leases
      11,076,000,000 12,507,000,000 12,773,000,000 12,836,000,000 12,886,000,000 14,019,000,000 14,373,000,000 15,033,000,000 16,555,000,000 17,071,000,000 17,532,000,000 18,140,000,000 19,823,000,000 20,671,000,000 21,202,000,000 22,903,000,000 24,441,000,000 25,138,000,000 25,523,000,000 26,679,000,000 26,061,000,000 27,425,000,000 29,825,000,000 19,412,000,000 12,662,000,000 8,873,000,000                                                             
        noncurrent operating leases
      5,298,000,000 5,353,000,000 5,356,000,000 5,479,000,000 5,704,000,000 5,814,000,000 5,919,000,000 6,053,000,000 6,203,000,000 6,468,000,000 6,558,000,000 6,646,000,000 6,877,000,000 6,866,000,000 6,865,000,000 7,006,000,000 7,199,000,000 7,056,000,000 5,742,000,000 5,633,000,000 5,568,000,000 5,713,000,000 5,856,000,000 5,371,000,000 5,204,000,000 5,294,000,000 5,441,000,000 5,539,000,000 5,805,000,000 5,801,000,000                                                         
        pension, postretirement and related benefits
      3,115,000,000 3,156,000,000 3,051,000,000 3,087,000,000 3,117,000,000 3,144,000,000 3,404,000,000 3,453,000,000 3,524,000,000 3,601,000,000 3,618,000,000 3,669,000,000 3,730,000,000 3,707,000,000 5,470,000,000 5,654,000,000 5,862,000,000 6,035,000,000 8,408,000,000 8,644,000,000 10,396,000,000 10,630,000,000 9,272,000,000 8,160,000,000 8,285,000,000 8,452,000,000 8,457,000,000 8,516,000,000 9,086,000,000 9,163,000,000 8,902,000,000 9,052,000,000 9,193,000,000 9,810,000,000 9,565,000,000 9,623,000,000 10,291,000,000 13,378,000,000 12,587,000,000 12,576,000,000 12,695,000,000 13,855,000,000 13,867,000,000 13,869,000,000 14,170,000,000 15,138,000,000 11,529,000,000 11,523,000,000 11,811,000,000 12,392,000,000 15,379,000,000 15,356,000,000 15,865,000,000 16,005,000,000 13,688,000,000 13,613,000,000 13,905,000,000 14,200,000,000 11,250,000,000 11,307,000,000 11,487,000,000 11,493,000,000 11,383,000,000 11,320,000,000 11,614,000,000 11,745,000,000 11,217,000,000 11,101,000,000 11,005,000,000 10,895,000,000      62,000,000           
        deferred income taxes
      3,496,000,000 3,444,000,000 2,961,000,000 2,626,000,000 2,229,000,000 2,176,000,000 1,675,000,000 1,410,000,000 994,000,000 908,000,000   432,000,000 325,000,000 935,000,000 1,219,000,000 1,534,000,000 1,294,000,000 1,813,000,000 2,158,000,000 2,306,000,000 1,988,000,000 1,305,000,000 447,000,000 1,502,000,000 1,456,000,000 1,245,000,000   242,000,000 432,000,000 804,000,000 1,175,000,000 935,000,000 1,422,000,000 2,077,000,000 2,750,000,000 3,064,000,000 3,150,000,000 3,797,000,000 4,489,000,000 4,956,000,000 2,710,000,000 2,892,000,000 3,091,000,000 3,275,000,000 2,187,000,000 2,029,000,000 1,764,000,000 1,736,000,000 405,000,000 451,000,000 463,000,000 463,000,000 465,000,000 488,000,000 408,000,000 461,000,000 396,000,000 342,000,000 281,000,000 355,000,000 167,000,000 236,000,000 164,000,000 107,000,000 291,000,000 316,000,000 332,000,000 401,000,000 99,000,000 196,000,000 154,000,000 142,000,000 731,000,000 441,000,000 463,000,000 402,000,000    99,000,000    35,000,000 
        other noncurrent liabilities
      3,923,000,000 3,994,000,000 3,943,000,000 3,800,000,000 3,707,000,000 3,744,000,000 3,603,000,000 3,507,000,000 3,541,000,000 3,561,000,000 4,301,000,000 4,017,000,000 3,614,000,000 3,974,000,000 4,067,000,000 4,094,000,000 4,289,000,000 4,398,000,000 4,613,000,000 4,715,000,000 4,792,000,000 4,862,000,000 4,997,000,000 3,930,000,000 1,666,000,000 1,386,000,000 1,378,000,000 2,025,000,000 1,395,000,000 1,132,000,000 2,517,000,000 2,365,000,000 2,320,000,000 2,111,000,000 2,001,000,000 1,885,000,000 1,822,000,000 1,878,000,000 1,956,000,000 2,015,000,000 2,091,000,000 1,891,000,000 2,465,000,000 2,322,000,000 2,457,000,000 2,128,000,000 1,946,000,000 1,735,000,000 1,712,000,000 1,711,000,000 1,709,000,000 1,680,000,000 1,694,000,000 1,649,000,000 1,711,000,000 1,606,000,000 1,489,000,000 1,419,000,000 1,424,000,000 1,383,000,000 1,386,000,000 1,533,000,000 1,522,000,000 1,353,000,000 1,319,000,000 1,222,000,000 1,261,000,000 1,223,000,000 1,272,000,000 1,342,000,000 537,000,000 675,000,000 793,000,000 465,000,000             
        total noncurrent liabilities
      31,356,000,000 32,840,000,000 32,552,000,000 32,401,000,000 32,196,000,000 33,409,000,000 33,604,000,000 34,052,000,000 35,340,000,000 36,121,000,000 36,465,000,000 36,915,000,000 38,457,000,000 39,766,000,000 42,136,000,000 44,670,000,000 46,697,000,000 47,606,000,000 49,253,000,000 50,455,000,000 51,913,000,000 54,535,000,000 55,994,000,000 43,421,000,000 35,037,000,000 28,970,000,000 27,940,000,000 27,396,000,000 27,607,000,000 28,001,000,000 23,141,000,000 23,671,000,000 21,509,000,000 20,809,000,000 21,431,000,000 21,705,000,000 22,561,000,000 23,735,000,000 23,291,000,000 23,574,000,000 23,982,000,000 24,758,000,000 25,693,000,000 26,136,000,000 27,387,000,000 28,429,000,000 24,831,000,000 24,779,000,000 25,516,000,000 26,457,000,000 31,726,000,000 32,181,000,000 32,943,000,000 33,411,000,000 31,176,000,000 31,162,000,000 31,554,000,000 32,194,000,000 29,802,000,000 30,291,000,000 30,863,000,000 30,906,000,000 30,618,000,000 31,718,000,000 33,043,000,000 33,497,000,000 34,359,000,000 32,351,000,000 32,349,000,000 33,118,000,000 16,419,000,000 15,798,000,000 16,133,000,000 15,705,000,000 16,531,000,000 6,514,000,000 6,139,000,000 7,629,000,000 7,496,000,000 7,144,000,000 7,212,000,000  6,882,000,000 20,852,000,000 20,766,000,000  
        commitments and contingencies
                                                                                            
        stockholders' equity:
                                                                                            
        common stock at 0.0001 par value...
                                                                                            
        additional paid-in capital
      11,944,000,000 11,883,000,000 11,791,000,000 11,744,000,000 11,698,000,000 11,740,000,000 11,686,000,000 11,647,000,000 11,688,000,000 11,641,000,000 11,613,000,000 11,578,000,000 11,544,000,000 11,526,000,000 11,507,000,000 11,485,000,000 11,462,000,000 11,447,000,000 11,428,000,000 11,396,000,000 11,326,000,000 11,259,000,000 11,241,000,000 11,192,000,000 11,054,000,000 11,129,000,000 11,177,000,000 11,201,000,000 11,254,000,000 11,671,000,000 11,740,000,000 11,807,000,000 11,967,000,000 12,053,000,000 12,133,000,000 12,279,000,000 12,443,000,000 12,294,000,000 8,887,000,000 9,361,000,000 10,339,000,000 10,875,000,000 11,285,000,000 11,681,000,000 12,578,000,000 12,981,000,000 13,464,000,000 13,687,000,000 13,876,000,000 13,982,000,000 14,096,000,000 14,150,000,000 14,120,000,000 14,069,000,000 14,045,000,000 14,031,000,000 14,015,000,000 13,999,000,000 13,983,000,000 13,964,000,000 13,945,000,000 13,926,000,000 13,900,000,000 13,884,000,000 13,856,000,000 13,827,000,000 13,791,000,000 13,765,000,000 13,738,000,000 13,714,000,000 9,561,000,000 9,541,000,000 9,528,000,000 9,512,000,000 9,428,000,000  1,561,000,000 1,561,000,000 1,561,000,000 1,561,000,000 1,560,000,000 1,635,000,000 1,636,000,000 3,119,000,000 2,944,000,000 3,052,000,000 
        retained earnings
      12,931,000,000 13,343,000,000 12,126,000,000 10,833,000,000 8,925,000,000 8,783,000,000 7,940,000,000 6,765,000,000 5,622,000,000 5,650,000,000 3,613,000,000 2,569,000,000 807,000,000          327,000,000 5,706,000,000 11,423,000,000 12,454,000,000 11,772,000,000 10,686,000,000 9,656,000,000 10,039,000,000 9,696,000,000 8,851,000,000 8,465,000,000 9,636,000,000 9,502,000,000 8,905,000,000 8,226,000,000 7,903,000,000 11,109,000,000 10,000,000,000 8,462,000,000 7,623,000,000 6,748,000,000 5,540,000,000 4,127,000,000 3,456,000,000 4,244,000,000 3,962,000,000 3,211,000,000 3,049,000,000                        314,000,000 164,000,000            
        accumulated other comprehensive loss
      -4,106,000,000 -4,135,000,000 -4,858,000,000 -4,899,000,000 -4,938,000,000 -4,979,000,000 -5,691,000,000 -5,740,000,000 -5,793,000,000 -5,845,000,000 -5,660,000,000 -5,709,000,000 -5,754,000,000 -5,801,000,000 -6,946,000,000 -7,008,000,000 -7,071,000,000 -7,130,000,000 -8,800,000,000 -8,882,000,000 -8,960,000,000 -9,038,000,000 -7,939,000,000 -7,937,000,000 -7,898,000,000 -7,989,000,000 -7,645,000,000 -7,694,000,000 -7,766,000,000 -7,825,000,000 -7,535,000,000 -7,606,000,000 -7,681,000,000 -7,621,000,000 -7,476,000,000 -7,549,000,000 -7,571,000,000 -7,636,000,000 -7,212,000,000 -7,279,000,000 -7,279,000,000 -7,275,000,000 -7,316,000,000 -7,288,000,000 -7,294,000,000 -7,311,000,000 -5,100,000,000 -5,137,000,000 -5,139,000,000 -5,130,000,000 -8,324,000,000 -8,331,000,000 -8,426,000,000 -8,577,000,000 -6,464,000,000 -6,490,000,000 -6,518,000,000 -6,766,000,000 -3,724,000,000 -3,593,000,000 -3,403,000,000 -3,578,000,000 -3,716,000,000 -3,853,000,000 -3,502,000,000 -3,563,000,000 -2,907,000,000 -2,963,000,000 -3,663,000,000        -441,000,000 -518,000,000 -2,777,000,000 -2,720,000,000 -2,721,000,000 -2,722,000,000 -2,529,000,000 -2,148,000,000 -2,126,000,000 -2,358,000,000 
        treasury stock
      -393,000,000 -238,000,000 -237,000,000 -238,000,000 -238,000,000 -251,000,000 -289,000,000 -286,000,000 -366,000,000 -341,000,000 -340,000,000 -338,000,000 -337,000,000 -313,000,000 -313,000,000 -313,000,000 -312,000,000 -282,000,000 -281,000,000 -280,000,000 -279,000,000 -259,000,000 -272,000,000 -271,000,000 -270,000,000 -236,000,000 -236,000,000 -235,000,000 -233,000,000 -198,000,000 -197,000,000 -196,000,000 -194,000,000 -158,000,000 -158,000,000 -156,000,000 -153,000,000 -274,000,000 -274,000,000 -272,000,000 -270,000,000 -373,000,000 -372,000,000 -370,000,000 -365,000,000 -313,000,000 -312,000,000 -309,000,000 -307,000,000 -258,000,000 -256,000,000 -255,000,000 -255,000,000 -234,000,000 -234,000,000 -234,000,000 -234,000,000 -231,000,000    -199,000,000 -198,000,000 -198,000,000 -181,000,000 -174,000,000 -164,000,000 -163,000,000 -154,000,000 -152,000,000          -224,000,000 -224,000,000 -601,000,000 -601,000,000 -2,121,000,000 -2,284,000,000  
        total stockholders' equity
      20,376,000,000 20,853,000,000 18,822,000,000 17,440,000,000 15,447,000,000 15,293,000,000 13,646,000,000 12,386,000,000 11,151,000,000 11,105,000,000 9,226,000,000 8,100,000,000 6,260,000,000 6,582,000,000 4,590,000,000 3,811,000,000 2,991,000,000 3,887,000,000 2,606,000,000 1,281,000,000 482,000,000 1,534,000,000 3,357,000,000 8,690,000,000 14,309,000,000 15,358,000,000 15,068,000,000 13,958,000,000 12,911,000,000 13,687,000,000 13,704,000,000 12,856,000,000 12,557,000,000 13,910,000,000 14,001,000,000 13,479,000,000 12,945,000,000 12,287,000,000 12,510,000,000 11,810,000,000 11,252,000,000 10,850,000,000 10,345,000,000 9,563,000,000 9,046,000,000 8,813,000,000 12,296,000,000 12,203,000,000 11,641,000,000 11,643,000,000 137,000,000        1,222,000,000 785,000,000 758,000,000                          
        total liabilities and stockholders' equity
      84,431,000,000 81,317,000,000 79,623,000,000 78,395,000,000 77,342,000,000 75,372,000,000 75,368,000,000 75,197,000,000 74,969,000,000 73,644,000,000 73,247,000,000 73,497,000,000 73,134,000,000 72,288,000,000 72,596,000,000 74,805,000,000 73,748,000,000 72,459,000,000 72,783,000,000 75,309,000,000 73,083,000,000 71,996,000,000 79,076,000,000 72,261,000,000 68,738,000,000 64,532,000,000 63,219,000,000 62,518,000,000 61,841,000,000 60,266,000,000 55,003,000,000 55,796,000,000 54,078,000,000 53,292,000,000 51,928,000,000 51,815,000,000 51,459,000,000 51,261,000,000 50,948,000,000 51,634,000,000 53,342,000,000 53,134,000,000 53,646,000,000 52,781,000,000 53,752,000,000 54,121,000,000 51,940,000,000 52,191,000,000 52,167,000,000 52,252,000,000 45,997,000,000        43,036,000,000 43,878,000,000 43,881,000,000                          
        the accompanying notes are an integral part of these condensed consolidated financial statements.
                                                                                            
        accounts receivable, net of an allowance
       2,850,000,000    3,224,000,000    3,130,000,000    3,176,000,000    2,404,000,000 2,183,000,000 2,258,000,000 1,837,000,000 1,396,000,000 1,503,000,000 1,375,000,000 2,280,000,000 2,854,000,000 2,836,000,000 2,844,000,000 3,154,000,000 2,314,000,000 2,517,000,000 2,427,000,000 2,568,000,000 2,377,000,000 2,399,000,000 2,164,000,000 2,307,000,000 2,064,000,000 1,996,000,000 2,102,000,000 2,179,000,000 2,020,000,000 1,974,000,000 1,966,000,000 2,057,000,000 2,297,000,000 2,135,000,000 2,104,000,000 2,042,000,000 1,609,000,000 1,969,000,000 2,084,000,000 1,994,000,000 1,693,000,000 1,785,000,000 1,828,000,000 1,807,000,000 1,563,000,000    1,456,000,000 1,512,000,000 1,645,000,000 1,533,000,000 1,353,000,000 1,469,000,000 1,410,000,000 1,419,000,000 1,443,000,000   1,325,000,000 1,066,000,000    915,000,000  1,030,000,000 1,012,000,000  1,007,000,000 923,000,000 892,000,000  
        fuel, expendable parts and supplies inventories, net of an allowance for obsolescence of 124 and 120
       1,601,000,000                                                                                     
        identifiable intangibles, net of accumulated amortization of 928 and 919
       5,966,000,000                                                                                     
        the accompanying notes are an integral part of these consolidated financial statements.
                                                                                            
        fuel, expendable parts and supplies inventories, net of allowance for obsolescence of 118 and 120
        1,543,000,000                                                                                    
        identifiable intangibles, net of accumulated amortization of 926 and 919
        5,968,000,000                                                                                    
        fuel, expendable parts and supplies inventories, net of allowance for obsolescence of 112 and 120
         1,525,000,000                                                                                   
        identifiable intangibles, net of accumulated amortization of 924 and 919
         5,970,000,000                                                                                   
        fuel, expendable parts and supplies inventories, net of allowance for obsolescence of 128 and 120
          1,486,000,000                                                                                  
        identifiable intangibles, net of accumulated amortization of 922 and 919
          5,972,000,000                                                                                  
        short-term investments
            8,000,000 124,000,000 589,000,000 1,127,000,000 2,170,000,000 3,368,000,000 3,396,000,000 3,268,000,000 1,345,000,000 1,549,000,000 2,250,000,000 3,386,000,000 4,417,000,000 4,873,000,000 5,575,000,000 5,789,000,000 5,048,000,000 4,302,000,000      203,000,000 478,000,000 520,000,000 523,000,000 825,000,000 960,000,000 747,000,000 743,000,000 487,000,000 1,514,000,000 1,289,000,000 1,206,000,000 1,465,000,000 1,442,000,000 1,494,000,000 1,447,000,000 1,217,000,000 1,852,000,000 719,000,000 959,000,000 959,000,000 959,000,000 958,000,000 958,000,000 958,000,000 959,000,000 959,000,000 959,000,000 958,000,000 958,000,000 967,000,000 958,000,000 718,000,000 439,000,000   71,000,000 92,000,000 91,000,000 67,000,000 212,000,000 921,000,000 103,000,000 103,000,000 138,000,000 1,549,000,000  790,000,000 614,000,000 525,000,000 464,000,000    330,000,000 169,000,000 336,000,000 
        fuel, expendable parts and supplies inventories, net of an allowance for obsolescence of 120 and 123
           1,428,000,000                                                                                 
        identifiable intangibles, net of accumulated amortization of 919 and 911
           5,975,000,000                                                                                 
        fuel, expendable parts and supplies inventories, net of allowance for obsolescence of 130 and 123
            1,467,000,000                                                                                
        identifiable intangibles, net of accumulated amortization of 917 and 911
            5,977,000,000                                                                                
        fuel, expendable parts and supplies inventories, net of allowance for obsolescence of 129 and 123
             1,486,000,000                                                                               
        identifiable intangibles, net of accumulated amortization of 915 and 911
             5,979,000,000                                                                               
        fuel, expendable parts and supplies inventories, net of allowance for obsolescence of 124 and 123
              1,452,000,000                                                                              
        identifiable intangibles, net of accumulated amortization of 913 and 911
              5,981,000,000                                                                              
        fuel, expendable parts and supplies inventories, net of an allowance for obsolescence of 123 and 136
               1,314,000,000                                                                             
        identifiable intangibles, net of accumulated amortization of 911 and 902
               5,983,000,000                                                                             
        fuel, expendable parts and supplies inventories, net of allowance for obsolescence of 128 and 136
                1,507,000,000                                                                            
        identifiable intangibles, net of accumulated amortization of 909 and 902
                5,985,000,000                                                                            
        fuel, expendable parts and supplies inventories, net of allowance for obsolescence of 126 and 136
                 1,438,000,000                                                                           
        identifiable intangibles, net of accumulated amortization of 906 and 902
                 5,988,000,000                                                                           
        fuel, expendable parts and supplies inventories, net of allowance for obsolescence of 134 and 136
                  1,379,000,000                                                                          
        identifiable intangibles, net of accumulated amortization of 904 and 902
                  5,990,000,000                                                                          
        fuel, expendable parts and supplies inventories, net of an allowance for obsolescence of 136 and 176
                   1,424,000,000                                                                         
        identifiable intangibles, net of accumulated amortization of 902 and 893
                   5,992,000,000                                                                         
        noncurrent air traffic liability
                   100,000,000 150,000,000 250,000,000 300,000,000 130,000,000 130,000,000 140,000,000 250,000,000 500,000,000 239,000,000 315,000,000                                                               
        retained earnings/
                   1,170,000,000 342,000,000    259,000,000   -428,000,000                                                                 
        fuel, expendable parts and supplies inventories, net of allowance for obsolescence of 150 and 176
                    1,473,000,000                                                                        
        identifiable intangibles, net of accumulated amortization of 900 and 893
                    5,994,000,000                                                                        
        fuel, expendable parts and supplies inventories, net of allowance for obsolescence of 152 and 176
                     1,734,000,000                                                                       
        identifiable intangibles, net of accumulated amortization of 897 and 893
                     5,997,000,000                                                                       
        accumulated deficit
                     -353,000,000 -1,088,000,000 -148,000,000  -953,000,000 -1,605,000,000                              -5,379,000,000 -6,748,000,000 -7,382,000,000 -7,389,000,000 -7,395,000,000 -8,442,000,000 -8,274,000,000 -8,398,000,000 -8,823,000,000 -9,372,000,000 -9,570,000,000 -9,252,000,000 -9,271,000,000 -9,634,000,000 -10,101,000,000 -9,845,000,000 -9,820,000,000 -9,659,000,000 -9,402,000,000        -14,574,000,000 -14,414,000,000 -12,433,000,000 -12,485,000,000 -10,280,000,000 -8,209,000,000 -6,971,000,000 -5,837,000,000 -5,449,000,000  
        fuel, expendable parts and supplies inventories, net of allowance for obsolescence of 157 and 176
                      1,292,000,000                                                                      
        identifiable intangibles, net of accumulated amortization of 895 and 893
                      5,999,000,000                                                                      
        fuel inventory
                       694,000,000 641,000,000 641,000,000 457,000,000 377,000,000 353,000,000 353,000,000 439,000,000 730,000,000 568,000,000 590,000,000 601,000,000 592,000,000 715,000,000 1,149,000,000 723,000,000 916,000,000 720,000,000 537,000,000 487,000,000 519,000,000 424,000,000 455,000,000 367,000,000 379,000,000 381,000,000 553,000,000 475,000,000 534,000,000 602,000,000 604,000,000 600,000,000 706,000,000 679,000,000 586,000,000 624,000,000 619,000,000                                 
        expendable parts and supplies inventories, net of an allowance for obsolescence of 176 and 188
                       404,000,000   371,000,000                                                                  
        identifiable intangibles, net of accumulated amortization of 893 and 883
                       6,001,000,000                                                                     
        cash restricted for airport construction
                       473,000,000 713,000,000 929,000,000 1,223,000,000 1,556,000,000 1,680,000,000 339,000,000 455,000,000 636,000,000 753,000,000 893,000,000 1,018,000,000 1,136,000,000 1,214,000,000 1,326,000,000                                                       
        expendable parts and supplies inventories, net of an allowance for obsolescence of 174 and 188
                        371,000,000                                                                    
        identifiable intangibles, net of accumulated amortization of 890 and 883
                        6,004,000,000                                                                    
        expendable parts and supplies inventories, net of an allowance for obsolescence of 178 and 188
                         364,000,000                                                                   
        identifiable intangibles, net of accumulated amortization of 888 and 883
                         6,006,000,000                                                                   
        identifiable intangibles, net of accumulated amortization of 885 and 883
                          6,009,000,000                                                                  
        expendable parts and supplies inventories, net of an allowance for obsolescence of 188 and 82 as of 2020 and 2019, respectively
                           355,000,000                                                                 
        identifiable intangibles, net of accumulated amortization of 883 and 873 as of 2020 and 2019, respectively
                           6,011,000,000                                                                 
        expendable parts and supplies inventories, net of an allowance for obsolescence of 208 and 82 at september 30, 2020 and december 31, 2019, respectively
                            393,000,000                                                                
        identifiable intangibles, net of accumulated amortization of 880 and 873 at september 30, 2020and december 31, 2019, respectively
                            6,014,000,000                                                                
        expendable parts and supplies inventories, net of an allowance for obsolescence of 135 and 82 at june 30, 2020 and december 31, 2019, respectively
                             494,000,000                                                               
        identifiable intangibles, net of accumulated amortization of 878 and 873 at june 30, 2020and december 31, 2019, respectively
                             6,017,000,000                                                               
        expendable parts and supplies inventories, net of an allowance for obsolescence of 90 and 82 at march 31, 2020 and december 31, 2019, respectively
                              535,000,000                                                              
        identifiable intangibles, net of accumulated amortization of 875 and 873 at march 31, 2020and december 31, 2019, respectively
                              6,019,000,000                                                              
        expendable parts and supplies inventories, net of an allowance for obsolescence of 82 and 102 at december 31, 2019 and 2018, respectively
                               521,000,000                                                             
        identifiable intangibles, net of accumulated amortization of 873 and 862 at december 31, 2019 and 2018, respectively
                               5,163,000,000                                                             
        expendable parts and supplies inventories, net of an allowance for obsolescence of 94 and 102 at september 30, 2019 and december 31, 2018, respectively
                                504,000,000                                                            
        identifiable intangibles, net of accumulated amortization of 871 and 862 at september 30, 2019and december 31, 2018, respectively
                                4,821,000,000                                                            
        current maturities of long-term debt and finance leases
                                2,196,000,000 2,281,000,000 3,055,000,000 1,518,000,000                                                         
        long-term debt and finance leases
                                7,923,000,000 7,710,000,000 7,710,000,000 8,253,000,000                                                         
        expendable parts and supplies inventories, net of an allowance for obsolescence of 96 and 102 at june 30, 2019 and december 31, 2018, respectively
                                 493,000,000                                                           
        identifiable intangibles, net of accumulated amortization of 868 and 862 at june 30, 2019and december 31, 2018, respectively
                                 4,824,000,000                                                           
        expendable parts and supplies inventories, net of an allowance for obsolescence of 97 and 102 at march 31, 2019 and december 31, 2018, respectively
                                  470,000,000                                                          
        identifiable intangibles, net of accumulated amortization of 865 and 862 at march 31, 2019and december 31, 2018, respectively
                                  4,827,000,000                                                          
        expendable parts and supplies inventories, net of an allowance for obsolescence of 102 and 113 at december 31, 2018 and 2017, respectively
                                   463,000,000                                                         
        identifiable intangibles, net of accumulated amortization of 862 and 845 at december 31, 2018 and 2017, respectively
                                   4,830,000,000                                                         
        expendable parts and supplies inventories, net of an allowance for obsolescence of 125 and 113 at september 30, 2018 and december 31, 2017, respectively
                                    455,000,000                                                        
        property and equipment, net:
                                                                                            
        other assets:
                                                                                            
        identifiable intangibles, net of accumulated amortization of 857 and 845 at september 30, 2018and december 31, 2017, respectively
                                    4,835,000,000                                                        
        total other assets
                                    19,712,000,000 20,031,000,000 19,258,000,000 18,885,000,000 18,945,000,000 19,271,000,000 19,762,000,000 19,435,000,000 19,514,000,000 20,021,000,000 20,614,000,000 21,039,000,000 19,065,000,000 18,860,000,000 19,463,000,000 19,727,000,000 19,223,000,000 19,626,000,000 20,449,000,000 20,747,000,000 15,749,000,000 15,828,000,000 15,634,000,000 15,565,000,000 15,590,000,000 15,654,000,000 15,558,000,000 15,547,000,000 15,451,000,000 15,500,000,000 15,555,000,000 15,574,000,000 15,648,000,000 15,545,000,000 15,497,000,000 15,365,000,000 15,333,000,000 15,265,000,000 15,442,000,000 15,483,000,000 8,050,000,000 8,485,000,000 9,481,000,000 15,482,000,000 16,016,000,000 1,055,000,000 1,149,000,000 1,264,000,000 1,429,000,000 1,220,000,000 1,425,000,000  1,403,000,000 1,399,000,000 1,460,000,000  
        current maturities of long-term debt and capital leases
                                    1,176,000,000 1,342,000,000 2,289,000,000 2,242,000,000 1,224,000,000 1,098,000,000 1,040,000,000 1,131,000,000 1,092,000,000 1,115,000,000 1,531,000,000 1,563,000,000 1,705,000,000 1,659,000,000 1,261,000,000 1,216,000,000 1,169,000,000 1,233,000,000 1,578,000,000 1,547,000,000 1,823,000,000 1,695,000,000 1,593,000,000 1,627,000,000 1,546,000,000 1,779,000,000 1,855,000,000 1,944,000,000 1,937,000,000 1,635,000,000 1,723,000,000 2,073,000,000 2,302,000,000 1,555,000,000 1,665,000,000 1,533,000,000 1,029,000,000 1,824,000,000 1,853,000,000 1,160,000,000 865,000,000 796,000,000 732,000,000 1,014,000,000 1,386,000,000 1,292,000,000 3,219,000,000 1,503,000,000 1,359,000,000 1,399,000,000 1,302,000,000 1,186,000,000 935,000,000 1,125,000,000 1,030,000,000 893,000,000 
        frequent flyer deferred revenue
                                    2,935,000,000 2,799,000,000 2,758,000,000 1,822,000,000 1,759,000,000 1,726,000,000 1,696,000,000 1,648,000,000 1,628,000,000 1,589,000,000 1,605,000,000 1,635,000,000 1,621,000,000 1,561,000,000 1,575,000,000 1,580,000,000 1,584,000,000 1,674,000,000 1,742,000,000 1,861,000,000 1,554,000,000 1,638,000,000 1,715,000,000 1,806,000,000 1,584,000,000 1,665,000,000 1,759,000,000 1,849,000,000 1,701,000,000 1,687,000,000 1,721,000,000 1,690,000,000 1,610,000,000 1,619,000,000 1,602,000,000 1,614,000,000 1,535,000,000 1,580,000,000 1,605,000,000 1,624,000,000                 
        long-term debt and capital leases
                                    8,115,000,000 8,562,000,000 6,360,000,000 6,592,000,000 7,584,000,000 7,916,000,000 8,187,000,000 6,201,000,000 6,473,000,000 6,689,000,000 6,920,000,000 6,766,000,000 7,096,000,000 7,598,000,000 8,305,000,000 8,561,000,000 8,970,000,000 9,089,000,000 9,466,000,000 9,795,000,000 10,077,000,000 10,526,000,000 10,721,000,000 11,082,000,000 11,111,000,000 11,221,000,000 11,521,000,000 11,847,000,000 12,557,000,000 13,026,000,000 13,446,000,000 13,179,000,000 13,063,000,000 14,228,000,000 15,251,000,000 15,665,000,000 16,655,000,000 14,774,000,000 14,743,000,000 15,411,000,000 9,274,000,000 8,338,000,000 8,387,000,000 7,986,000,000 6,913,000,000 5,132,000,000 4,792,000,000 6,509,000,000 6,422,000,000 6,508,000,000 6,654,000,000 6,557,000,000 6,657,000,000 12,459,000,000 12,545,000,000 12,507,000,000 
        expendable parts and supplies inventories, net of an allowance for obsolescence of 122 and 113 at june 30, 2018 and december 31, 2017, respectively
                                     440,000,000                                                       
        identifiable intangibles, net of accumulated amortization of 853 and 845 at june 30, 2018and december 31, 2017, respectively
                                     4,839,000,000                                                       
        expendable parts and supplies inventories, net of an allowance for obsolescence of 119 and 113 at march 31, 2018 and december 31, 2017, respectively
                                      423,000,000                                                      
        identifiable intangibles, net of accumulated amortization of 849 and 845 at march 31, 2018and december 31, 2017, respectively
                                      4,843,000,000                                                      
        expendable parts and supplies inventories, net of an allowance for obsolescence of 113 and 110 at december 31, 2017 and 2016, respectively
                                       413,000,000                                                     
        identifiable intangibles, net of accumulated amortization of 845 and 828 at december 31, 2017 and 2016, respectively
                                       4,847,000,000                                                     
        expendable parts and supplies inventories, net of an allowance for obsolescence of 124 and 110 at september 30, 2017 and december 31, 2016, respectively
                                        416,000,000                                                    
        identifiable intangibles, net of accumulated amortization of 841 and 828 at september 30, 2017and december 31, 2016, respectively
                                        4,851,000,000                                                    
        expendable parts and supplies inventories, net of an allowance for obsolescence of 119 and 110 at june 30, 2017 and december 31, 2016, respectively
                                         401,000,000                                                   
        identifiable intangibles, net of accumulated amortization of 837 and 828 at june 30, 2017and december 31, 2016, respectively
                                         4,855,000,000                                                   
        expendable parts and supplies inventories, net of an allowance for obsolescence of 114 and 110 at march 31, 2017 and december 31, 2016, respectively
                                          368,000,000                                                  
        identifiable intangibles, net of accumulated amortization of 833 and 828 at march 31, 2017and december 31, 2016, respectively
                                          4,855,000,000                                                  
        expendable parts and supplies inventories, net of an allowance for obsolescence of 110 and 114 at december 31, 2016 and 2015, respectively
                                           372,000,000                                                 
        hedge derivative asset
                                           393,000,000                                                 
        identifiable intangibles, net of accumulated amortization of 828 and 811 at december 31, 2016 and 2015, respectively
                                           4,844,000,000                                                 
        hedge derivative liability
                                           688,000,000                                                 
        expendable parts and supplies inventories, net of an allowance for obsolescence of 108 and 114 at september 30, 2016 and december 31, 2015, respectively
                                            351,000,000                                                
        hedge derivatives asset
                                            496,000,000 773,000,000 2,179,000,000 1,987,000,000 1,586,000,000 966,000,000 1,575,000,000 1,078,000,000                                         
        identifiable intangibles, net of accumulated amortization of 824 and 811 at september 30, 2016and december 31, 2015, respectively
                                            4,848,000,000                                                
        hedge derivatives liability
                                            724,000,000 895,000,000 2,630,000,000 2,581,000,000 2,194,000,000 1,440,000,000 2,512,000,000 2,772,000,000                    139,000,000 160,000,000 150,000,000 662,000,000 1,247,000,000                 
        expendable parts and supplies inventories, net of an allowance for obsolescence of 103 and 114 at june 30, 2016and december 31, 2015, respectively
                                             340,000,000                                               
        identifiable intangibles, net of accumulated amortization of 820 and 811 at june 30, 2016and december 31, 2015, respectively
                                             4,852,000,000                                               
        hedge margin receivable
                                              454,000,000 119,000,000 381,000,000 134,000,000 383,000,000 925,000,000                    7,000,000   404,000,000 1,139,000,000                 
        expendable parts and supplies inventories, net of an allowance for obsolescence of 114 at march 31, 2016and december 31, 2015
                                              326,000,000                                              
        identifiable intangibles, net of accumulated amortization of 815 and 811 at march 31, 2016and december 31, 2015, respectively
                                              4,856,000,000                                              
        expendable parts and supplies inventories, net of an allowance for obsolescence of 114 and 127 at december 31, 2015 and 2014, respectively
                                               318,000,000                                             
        identifiable intangibles, net of accumulated amortization of 811 and 793 at december 31, 2015 and 2014, respectively
                                               4,861,000,000                                             
        expendable parts and supplies inventories, net of an allowance for obsolescence of 124 and 127at september 30, 2015 and december 31, 2014, respectively
                                                314,000,000                                            
        identifiable intangibles, net of accumulated amortization of 806 and 793at september 30, 2015 and december 31, 2014, respectively
                                                4,589,000,000                                            
        expendable parts and supplies inventories, net of an allowance for obsolescence of 120 and 127at june 30, 2015 and december 31, 2014, respectively
                                                 328,000,000                                           
        identifiable intangibles, net of accumulated amortization of 802 and 793at june 30, 2015 and december 31, 2014, respectively
                                                 4,594,000,000                                           
        expendable parts and supplies inventories, net of an allowance for obsolescence of 119 and 127at march 31, 2015 and december 31, 2014, respectively
                                                  326,000,000                                          
        identifiable intangibles, net of accumulated amortization of 797 and 793at march 31, 2015 and december 31, 2014, respectively
                                                  4,599,000,000                                          
        expendable parts and supplies inventories, net of an allowance for obsolescence of 127 and 118at december 31, 2014 and 2013, respectively
                                                   318,000,000                                         
        identifiable intangibles, net of accumulated amortization of 793 and 738 at december 31, 2014 and 2013, respectively
                                                   4,603,000,000                                         
        restricted cash, cash equivalents and short-term investments
                                                    149,000,000 121,000,000 125,000,000 122,000,000 213,000,000 173,000,000 291,000,000 375,000,000 401,000,000 368,000,000 375,000,000 305,000,000 405,000,000 432,000,000 390,000,000 409,000,000 418,000,000 409,000,000                       
        expendable parts and supplies inventories, net of an allowance for obsolescence of 113 and 118at september 30, 2014 and december 31, 2013, respectively
                                                    340,000,000                                        
        identifiable intangibles, net of accumulated amortization of 782 and 738at september 30, 2014 and december 31, 2013, respectively
                                                    4,614,000,000                                        
        taxes payable
                                                    687,000,000 790,000,000 810,000,000 673,000,000 697,000,000 789,000,000 735,000,000 585,000,000 638,000,000 722,000,000 704,000,000 594,000,000 597,000,000 766,000,000 759,000,000 579,000,000 592,000,000 721,000,000 705,000,000 525,000,000 540,000,000 673,000,000 591,000,000 565,000,000 345,000,000 422,000,000 422,000,000 320,000,000 438,000,000 423,000,000 473,000,000 500,000,000 537,000,000 641,000,000 626,000,000 525,000,000 540,000,000 591,000,000 594,000,000 499,000,000 
        expendable parts and supplies inventories, net of an allowance for obsolescence of 124 and 118at june 30, 2014 and december 31, 2013, respectively
                                                     357,000,000                                       
        identifiable intangibles, net of accumulated amortization of 771 and 738at june 30, 2014 and december 31, 2013, respectively
                                                     4,625,000,000                                       
        expendable parts and supplies inventories, net of an allowance for obsolescence of 122 and 118at march 31, 2014 and december 31, 2013, respectively
                                                      348,000,000                                      
        identifiable intangibles, net of accumulated amortization of 753 and 738at march 31, 2014 and december 31, 2013, respectively
                                                      4,642,000,000                                      
        expendable parts and supplies inventories, net of an allowance for obsolescence of 118 and 127at december 31, 2013 and 2012, respectively
                                                       357,000,000                                     
        identifiable intangibles, net of accumulated amortization of 738 and 670 at december 31, 2013 and 2012, respectively
                                                       4,658,000,000                                     
        stockholders' equity
                                                                                            
        expendable parts and supplies inventories, net of an allowance for obsolescence of 126 and 127at september 30, 2013 and december 31, 2012, respectively
                                                        353,000,000                                    
        identifiable intangibles, net of accumulated amortization of 719 and 670at september 30, 2013 and december 31, 2012, respectively
                                                        4,675,000,000                                    
        expendable parts and supplies inventories, net of an allowance for obsolescence of 125 and 127at june 30, 2013 and december 31, 2012, respectively
                                                         376,000,000                                   
        identifiable intangibles, net of accumulated amortization of 702 and 670at june 30, 2013 and december 31, 2012, respectively
                                                         4,692,000,000                                   
        liabilities and stockholders' deficit
                                                                                            
        stockholders' deficit:
                                                                                            
        total stockholders' deficit
                                                         -1,184,000,000 -1,943,000,000 -2,131,000,000 -48,000,000 -1,135,000,000 -1,011,000,000                              
        total liabilities and stockholders' deficit
                                                         45,772,000,000 45,068,000,000 44,550,000,000 44,352,000,000 44,720,000,000 44,189,000,000                              
        expendable parts and supplies inventories, net of an allowance for obsolescence of 133 and 127at march 31, 2013 and december 31, 2012, respectively
                                                          371,000,000                                  
        identifiable intangibles, net of accumulated amortization of 685 and 670at march 31, 2013 and december 31, 2012, respectively
                                                          4,709,000,000                                  
        operating revenue:
                                                                                            
        passenger:
                                                                                            
        mainline
                                                          5,876,000,000     23,864,000,000                             
        regional carriers
                                                          1,457,000,000     6,393,000,000                             
        total passenger revenue
                                                          7,333,000,000     30,257,000,000                             
        cargo
                                                          238,000,000     1,027,000,000                             
        other
                                                          929,000,000     3,831,000,000                 600,000,000 1,026,000,000 623,000,000 368,000,000 748,000,000 342,000,000 251,000,000 299,000,000 225,000,000 296,000,000 299,000,000 340,000,000 
        total operating revenue
                                                          8,500,000,000     35,115,000,000                             
        operating expense:
                                                                                            
        aircraft fuel and related taxes
                                                          2,289,000,000     9,730,000,000                             
        salaries and related costs
                                                          1,911,000,000     6,894,000,000                             
        contract carrier arrangements
                                                          1,399,000,000     5,470,000,000                             
        aircraft maintenance materials and outside repairs
                                                          491,000,000     1,765,000,000                             
        depreciation and amortization
                                                          405,000,000     1,523,000,000                             
        contracted services
                                                          401,000,000     1,642,000,000                             
        passenger commissions and other selling expenses
                                                          357,000,000     1,682,000,000                             
        landing fees and other rents
                                                          323,000,000     1,281,000,000                             
        passenger service
                                                          164,000,000     721,000,000                             
        aircraft rent
                                                          60,000,000     298,000,000                             
        profit sharing
                                                          20,000,000     264,000,000                             
        restructuring and other items
                                                          102,000,000     242,000,000                             
        total operating expense
                                                          8,278,000,000     33,140,000,000                             
        operating income
                                                          222,000,000     1,975,000,000                             
        other income:
                                                                                            
        interest expense
                                                          -178,000,000     -901,000,000                             
        amortization of debt discount
                                                          -42,000,000     -193,000,000                             
        miscellaneous
                                                          1,000,000     -44,000,000                             
        total other income
                                                          -219,000,000     -1,206,000,000                             
        income before income taxes
                                                          3,000,000     769,000,000                             
        income tax benefit
                                                          4,000,000     85,000,000                             
        net income
                                                          7,000,000     854,000,000                             
        basic earnings per share
                                                          10,000     1,020,000                             
        diluted earnings per share
                                                          10,000     1,010,000                             
        comprehensive income
                                                          158,000,000                                  
        expendable parts and supplies inventories, net of an allowance for obsolescence of 127 and 101at december 31, 2012 and 2011, respectively
                                                           404,000,000                                 
        identifiable intangibles, net of accumulated amortization of 670 and 600 at december 31, 2012 and 2011, respectively
                                                           4,679,000,000                                 
        expendable parts and supplies inventories, net of an allowance for obsolescence of 122 and 101at september 30, 2012 and december 31, 2011, respectively
                                                            403,000,000                                
        identifiable intangibles, net of accumulated amortization of 651 and 600at september 30, 2012 and december 31, 2011, respectively
                                                            4,697,000,000                                
        expendable parts and supplies inventories, net of an allowance for obsolescence of 112 and 101at june 30, 2012 and december 31, 2011, respectively
                                                             393,000,000                               
        identifiable intangibles, net of accumulated amortization of 634 and 600at june 30, 2012 and december 31, 2011, respectively
                                                             4,716,000,000                               
        expendable parts and supplies inventories, net of an allowance for obsolescence of 106 and 101at march 31, 2012 and december 31, 2011, respectively
                                                              364,000,000                              
        identifiable intangibles, net of accumulated amortization of 617 and 600at march 31, 2012 and december 31, 2011, respectively
                                                              4,733,000,000                              
        expendable parts and supplies inventories, net of an allowance for obsolescence of 101 and 104at december 31, 2011 and 2010, respectively
                                                               367,000,000                             
        identifiable intangibles, net of accumulated amortization of 600 and 530 at december 31, 2011 and 2010, respectively
                                                               4,751,000,000                             
        liabilities and stockholders' (deficit) equity
                                                                                            
        stockholders' (deficit) equity:
                                                                                            
        total stockholders' (deficit) equity
                                                               -1,396,000,000                             
        total liabilities and stockholders' (deficit) equity
                                                               43,499,000,000                             
        loss on extinguishment of debt
                                                               -68,000,000                             
        at september 30, 2011 and december 31, 2010, respectively
                                                                1,816,000,000                            
        expendable parts and supplies inventories, net of an allowance for obsolescence of 96 and 104
                                                                                            
        identifiable intangibles, net of accumulated amortization of 582 and 530
                                                                                            
        shares issued at september 30, 2011 and december 31, 2010, respectively
                                                                                            
        december 31, 2010, respectively
                                                                -214,000,000 -214,000,000 -214,000,000                          
        at june 30, 2011 and december 31, 2010, respectively
                                                                 1,885,000,000                           
        expendable parts and supplies inventories, net of an allowance for obsolescence of 104 and 104
                                                                                            
        identifiable intangibles, net of accumulated amortization of 565 and 530
                                                                                            
        shares issued at june 30, 2011 and december 31, 2010, respectively
                                                                                            
        march 31, 2011 and december 31, 2010, respectively
                                                                  1,848,000,000                          
        expendable parts and supplies inventories, net of an allowance for obsolescence of 110 and 104
                                                                                            
        at march 31, 2011 and december 31, 2010, respectively
                                                                  349,000,000                          
        identifiable intangibles, net of accumulated amortization of 547 and 530
                                                                                            
        shares issued at march 31, 2011 and december 31, 2010, respectively
                                                                                            
        expendable parts and supplies inventories, net of an allowance for obsolescence of 104 and 75 at december 31, 2010 and 2009, respectively
                                                                   318,000,000                         
        identifiable intangibles, net of accumulated amortization of 530 and 451 at december 31, 2010 and 2009, respectively
                                                                   4,749,000,000                         
        liabilities and stockholders’ equity
                                                                                            
        stockholders’ equity:
                                                                                            
        total stockholders’ equity
                                                                   897,000,000 715,000,000 199,000,000 72,000,000 245,000,000 900,000,000 980,000,000 519,000,000 874,000,000                 
        total liabilities and stockholders’ equity
                                                                   43,188,000,000 43,153,000,000 43,809,000,000 44,339,000,000 43,539,000,000 44,853,000,000 44,480,000,000 44,395,000,000 45,014,000,000                 
        expendable parts and supplies inventories, net of an allowance for obsolescence of 106 and 75 at september 30, 2010 and december 31, 2009, respectively
                                                                    278,000,000                        
        identifiable intangibles, net of accumulated amortization of 512 and 451 at september 30, 2010 and december 31, 2009, respectively
                                                                    4,766,000,000                        
        expendable parts and supplies inventories, net of an allowance for obsolescence of 77 and 75 at june 30, 2010 and december 31, 2009, respectively
                                                                     285,000,000                       
        identifiable intangibles, net of accumulated amortization of 494 and 451 at june 30, 2010 and december 31, 2009, respectively
                                                                     4,786,000,000                       
        restricted cash and cash equivalents
                                                                      456,000,000 423,000,000 478,000,000 361,000,000 387,000,000 429,000,000                 
        expendable parts and supplies inventories, net of an allowance for obsolescence of 85 and 75 at march 31, 2010 and december 31, 2009, respectively
                                                                      319,000,000                      
        identifiable intangibles, net of accumulated amortization of 475 and 451 at march 31, 2010 and december 31, 2009, respectively
                                                                      4,805,000,000                      
        expendable parts and supplies inventories, net of an allowance for obsolescence of 75 and 32 at december 31, 2009 and 2008, respectively
                                                                       327,000,000                     
        identifiable intangibles, net of accumulated amortization of 451 and 354 at december 31, 2009 and 2008, respectively
                                                                       4,829,000,000                     
        expendable parts and supplies inventories, net of an allowance for obsolescence of 52 and 32 at september 30, 2009 and december 31, 2008, respectively
                                                                        356,000,000                    
        identifiable intangibles, net of accumulated amortization of 427 and 354 at september 30, 2009 and december 31, 2008, respectively
                                                                        4,864,000,000                    
        expendable parts and supplies inventories, net of an allowance for obsolescence of 47 and 32 at june 30, 2009 and december 31, 2008, respectively
                                                                         372,000,000                   
        identifiable intangibles, net of accumulated amortization of 402 and 354 at june 30, 2009 and december 31, 2008, respectively
                                                                         4,888,000,000                   
        expendable parts and supplies inventories, net of an allowance for obsolescence of 39 and 32 at march 31, 2009 and december 31, 2008, respectively
                                                                          380,000,000                  
        identifiable intangibles, net of accumulated amortization of 379 and 354 at march 31, 2009 and december 31, 2008, respectively
                                                                          4,918,000,000                  
        expendable parts and supplies inventories, net of an allowance for obsolescence of 32 and 11 at december 31, 2008 and 2007, respectively
                                                                           388,000,000                 
        identifiable intangibles, net of accumulated amortization of 354 and 147 at december 31, 2008 and 2007, respectively
                                                                           4,944,000,000                 
        note payable
                                                                               295,000,000             
        common stock:
                                                                                            
        (accumulated deficit) retained earnings
                                                                           -8,608,000,000 -7,170,000,000 -7,120,000,000 -6,076,000,000             -4,373,000,000 
        accumulated other comprehensive income
                                                                           -4,080,000,000 152,000,000 1,451,000,000 650,000,000 435,000,000 8,000,000            
        restricted cash
                                                                            228,000,000 517,000,000 218,000,000 520,000,000 333,000,000  1,046,000,000 750,000,000 1,021,000,000 1,046,000,000 933,000,000 870,000,000 1,119,000,000 368,000,000 358,000,000 348,000,000 
        expendable parts and supplies inventories, net of allowance for obsolescence of 24 and 11 at september 30, 2008 and december 31, 2007, respectively
                                                                            243,000,000                
        property and equipment:
                                                                                            
        flight equipment
                                                                            10,264,000,000 10,098,000,000 9,950,000,000 9,525,000,000 9,176,000,000  17,483,000,000 17,641,000,000 17,819,000,000 17,982,000,000 18,160,000,000 18,591,000,000 19,026,000,000 20,935,000,000 20,719,000,000 20,627,000,000 
        accumulated depreciation
                                                                            -642,000,000 -525,000,000 -411,000,000 -299,000,000 -76,000,000  -6,901,000,000 -6,800,000,000 -6,608,000,000 -6,605,000,000 -6,440,000,000 -6,621,000,000 -6,846,000,000 -7,002,000,000 -6,783,000,000 -6,612,000,000 
        ground property and equipment
                                                                            2,069,000,000 2,025,000,000 1,981,000,000 1,943,000,000 1,750,000,000  4,218,000,000 4,575,000,000 4,666,000,000 4,648,000,000 4,760,000,000 4,791,000,000 4,852,000,000 4,897,000,000 4,837,000,000 4,805,000,000 
        flight and ground equipment under capital leases
                                                                            621,000,000 624,000,000 616,000,000 602,000,000 556,000,000  474,000,000 474,000,000 466,000,000 523,000,000 558,000,000 535,000,000 523,000,000 516,000,000 517,000,000 717,000,000 
        accumulated amortization
                                                                            -128,000,000 -111,000,000 -88,000,000 -63,000,000 -14,000,000  -151,000,000 -136,000,000 -130,000,000 -154,000,000 -171,000,000 -213,000,000 -211,000,000 -197,000,000 -184,000,000 -364,000,000 
        advance payments for equipment
                                                                            375,000,000 306,000,000 234,000,000 239,000,000 141,000,000  95,000,000 57,000,000 56,000,000 44,000,000 44,000,000 44,000,000 44,000,000 65,000,000 89,000,000 89,000,000 
        total property and equipment
                                                                            12,060,000,000 11,999,000,000 11,945,000,000 11,701,000,000 11,469,000,000 12,585,000,000 12,528,000,000 12,973,000,000 13,371,000,000 13,615,000,000 14,026,000,000  14,529,000,000 16,376,000,000 16,436,000,000  
        identifiable intangibles, net of accumulated amortization of 305 and 147 at september 30, 2008 and december 31, 2007, respectively
                                                                            2,291,000,000                
        liabilities and shareowners’ equity
                                                                                            
        skymiles deferred revenue
                                                                            1,077,000,000 1,096,000,000 1,079,000,000   602,000,000           
        pension and related benefits
                                                                            2,979,000,000 2,995,000,000 3,003,000,000 3,002,000,000 3,235,000,000         5,209,000,000 5,031,000,000 5,099,000,000 
        postretirement benefits
                                                                            857,000,000 856,000,000 858,000,000 865,000,000 1,042,000,000         1,742,000,000 1,756,000,000 1,771,000,000 
        shareowners’ equity:
                                                                                            
        stock held in treasury, at cost, 7,517,662 and 7,238,973 shares at september 30, 2008 and december 31, 2007, respectively
                                                                            -152,000,000                
        total shareowners’ equity
                                                                            2,391,000,000 3,721,000,000 3,951,000,000 10,113,000,000             
        total liabilities and shareowners’ equity
                                                                            25,598,000,000 27,651,000,000 26,755,000,000 32,423,000,000             
        expendable parts and supplies inventories, net of allowance for obsolescence of 19 and 11 at june 30, 2008 and december 31, 2007, respectively
                                                                             225,000,000               
        fuel hedge derivatives
                                                                             879,000,000               
        identifiable intangibles, net of accumulated amortization of 254 and 147 at june 30, 2008 and december 31, 2007, respectively
                                                                             2,342,000,000               
        fuel hedge margin
                                                                             973,000,000               
        stock held in treasury, at cost, 7,429,078 and 7,238,973 shares at june 30, 2008 and december 31, 2007, respectively
                                                                             -151,000,000               
        expendable parts and supplies inventories, net of an allowance for obsolescence of 14 and 11 at march 31, 2008 and december 31, 2007, respectively
                                                                              263,000,000              
        identifiable intangibles, net of accumulated amortization of 202 and 147 at march 31, 2008 and december 31, 2007, respectively
                                                                              2,751,000,000              
        stock held in treasury, at cost, 7,390,072 and 7,238,973 shares at march 31, 2008 and december 31, 2007, respectively
                                                                              -151,000,000              
        expendable parts and supplies inventories, net of an allowance for obsolescence of 11 at december 31, 2007 and 161 at december 31, 2006
                                                                               262,000,000             
        identifiable intangibles, net of accumulated amortization of 147 at december 31, 2007 and 190 at december 31, 2006
                                                                               2,806,000,000             
        deferred revenue
                                                                               1,100,000,000 1,155,000,000  379,000,000 363,000,000         
        liabilities subject to compromise
                                                                                 19,345,000,000 19,349,000,000 19,817,000,000 20,943,000,000 20,989,000,000 18,695,000,000 17,380,000,000 16,385,000,000    
        shareowners’ equity
                                                                                            
        predecessor common stock at 0.01 par value...
                                                                                            
        successor common stock at 0.0001 par value...
                                                                                            
        predecessor stock held in treasury, at cost, 4,745,710 shares at december 31, 2006
                                                                                            
        successor stock held in treasury, at cost, 7,238,973 shares at december 31, 2007
                                                                               -148,000,000             
        of 21 at june 30, 2007 and 21 at december 31, 2006
                                                                                1,140,000,000            
        expendable parts and supplies inventories, net of an allowance for
                                                                                            
        obsolescence of 3 at june 30, 2007 and 161 at december 31, 2006
                                                                                246,000,000            
        operating rights and other intangibles, net of accumulated amortization
                                                                                            
        of 35 at june 30, 2007 and 190 at december 31, 2006
                                                                                2,918,000,000            
        delta air lines, inc.
                                                                                            
        consolidated balance sheets
                                                                                            
        liabilities and shareowners' equity
                                                                                            
        notes payable
                                                                                640,000,000            
        shareowners' equity
                                                                                            
        202,081,648 shares issued at december 31, 2006
                                                                                            
        246,863,602 shares issued at june 30, 2007
                                                                                            
        successor stock held in treasury, at cost, 6,193,411 shares at june 30, 2007
                                                                                -128,000,000            
        total shareowners' equity
                                                                                9,472,000,000            
        total liabilities and shareowners' equity
                                                                                33,734,000,000            
        current assets
                                                                                            
        cash, cash equivalents and short-term investments
                                                                                 2,915,000,000           
        restricted and designated cash
                                                                                 1,069,000,000           
        expendable parts and supplies inventories
                                                                                 183,000,000           
        net flight equipment and net flight equipment under capital lease
                                                                                 11,087,000,000           
        other property and equipment
                                                                                 1,498,000,000           
        other assets
                                                                                            
        intangibles
                                                                                 88,000,000           
        current liabilities
                                                                                            
        dip facility
                                                                                 1,959,000,000           
        accounts payable, accrued salaries and related benefits
                                                                                 1,396,000,000           
        noncurrent liabilities
                                                                                            
        exit facilities
                                                                                            
        other notes payable
                                                                                            
        shareowners’ (deficit) equity
                                                                                            
        debtors
                                                                                            
        common shares, ...
                                                                                 1,563,000,000           
        retained deficit and other - debtors
                                                                                 -15,890,000,000           
        reorganized debtors
                                                                                            
        total liabilities and shareowners’ (deficit) equity
                                                                                 19,771,000,000           
        ·
                                                                                            
        of 21 at march 31, 2007 and december 31, 2006
                                                                                  986,000,000          
        obsolescence of 131 and 161 at march 31, 2007 and december 31, 2006, respectively
                                                                                  184,000,000          
        of 191 and 190 at march 31, 2007 and december 31, 2006, respectively
                                                                                  88,000,000          
        debtor and debtor-in-possession
                                                                                            
        liabilities and shareowners' deficit
                                                                                            
        deferred revenue and credits
                                                                                  339,000,000 346,000,000 326,000,000 294,000,000       
        shareowners' deficit:
                                                                                            
        0.01 par value...
                                                                                     2,000,000 2,000,000  2,000,000 2,000,000   
        shares issued at march 31, 2007 and december 31, 2006
                                                                                  2,000,000          
        and december 31, 2006
                                                                                  -224,000,000          
        total shareowners' deficit
                                                                                  -13,676,000,000 -13,593,000,000 -13,871,000,000 -13,866,000,000       
        total liabilities and shareowners' deficit
                                                                                  19,811,000,000 19,622,000,000 20,681,000,000 20,737,000,000       
        expendable parts and supplies inventories, net of an allowance for obsolescence of 161 and 201 at december 31, 2006 and 2005, respectively
                                                                                   181,000,000         
        operating rights and other intangibles, net of accumulated amortization of 190 and 189 at december 31, 2006 and 2005, respectively
                                                                                   89,000,000         
        employee stock ownership plan
                                                                                            
        preferred stock:
                                                                                            
        series b esop convertible preferred stock, 1.00 par value,
                                                                                            
        72.00 stated and liquidation value; zero and 4,667,568 shares issued
                                                                                            
        and outstanding at december 31, 2006 and 2005, respectively
                                                                                            
        unearned compensation under employee stock ownership plan
                                                                                       -89,000,000 -86,000,000 -92,000,000 -101,000,000 -113,000,000 
        total employee stock ownership plan preferred stock
                                                                                        250,000,000 276,000,000 277,000,000  
        shares issued at december 31, 2006 and 2005
                                                                                   2,000,000         
        and 12,738,630 shares at december 31, 2005
                                                                                   -224,000,000         
        of 38 at september 30, 2006 and 41 at december 31, 2005
                                                                                    999,000,000        
        obsolescence of 176 at september 30, 2006 and 201 at december 31, 2005
                                                                                    178,000,000        
        of 193 at september 30, 2006 and 189 at december 31, 2005
                                                                                    70,000,000        
        accounts payable, deferred credits and other accrued liabilities
                                                                                    1,756,000,000 1,570,000,000 1,638,000,000 1,407,000,000 1,100,000,000 1,678,000,000 1,698,000,000 1,560,000,000 
        employee stock ownership plan preferred stock:
                                                                                            
        series b esop convertible preferred stock:
                                                                                            
        1.00 par value, 72.00 stated and liquidation value, no shares
                                                                                            
        issued and outstanding at september 30, 2006; and 4,667,568 shares issued
                                                                                            
        and outstanding at december 31, 2005
                                                                                            
        at september 30, 2006 and december 31, 2005
                                                                                    2,000,000        
        12,738,630 shares at december 31, 2005
                                                                                    -224,000,000        
        expendable parts and supplies inventories, net of an allowance for obsolescence of 207 at june 30, 2006 and 201 at december 31, 2005
                                                                                     172,000,000       
        operating rights and other intangibles, net of accumulated amortization of 193 at june 30, 2006 and 189 at december 31, 2005
                                                                                     70,000,000       
        series b esop convertible preferred stock: 1.00 par value, 72.00 stated and liquidation value, no shares issued and outstanding at june 30, 2006; and 4,667,568 shares issued and outstanding at december 31, 2005
                                                                                            
        expendable parts and supplies inventories, net of an allowance for obsolescence of 204 at march 31, 2006 and 201 at december 31, 2005
                                                                                      171,000,000      
        operating rights and other intangibles, net of accumulated amortization of 192 at march 31, 2006 and 189 at december 31, 2005
                                                                                      71,000,000      
        liabilities and shareowners’ deficit
                                                                                        2,005,000,000 2,005,000,000 2,005,000,000  
        deferred credits
                                                                                      307,000,000      
        1.00 par value, 72.00 stated and liquidation value, no shares issued and outstanding at march 31, 2006; and 4,667,568 shares issued and outstanding at december 31, 2005
                                                                                            
        shareowners’ deficit:
                                                                                            
        total shareowners’ deficit
                                                                                      -11,663,000,000  -8,463,000,000 -6,985,000,000 -6,629,000,000  
        total liabilities and shareowners’ deficit
                                                                                      20,558,000,000 20,039,000,000 20,215,000,000 21,561,000,000 21,737,000,000 21,801,000,000 
        restricted investments for boston airport terminal project
                                                                                       46,000,000 53,000,000 76,000,000 90,000,000 127,000,000 
        accrued rent
                                                                                         155,000,000 143,000,000 271,000,000 
        long-term debt issued by massachusetts port authority
                                                                                         498,000,000 498,000,000 498,000,000 
        deferred credits:
                                                                                            
        deferred gains on sale and leaseback transactions
                                                                                         350,000,000 363,000,000 376,000,000 
        deferred revenue and other credits
                                                                                       186,000,000 201,000,000 147,000,000 151,000,000 155,000,000 
        expendable parts and supplies inventories, net of an allowance for obsolescence of 189 at september 30, 2005 and 184 at december 31, 2004
                                                                                        183,000,000    
        operating rights and other intangibles, net of accumulated amortization of 189 at september 30, 2005 and 185 at december 31, 2004
                                                                                        75,000,000    
        total deferred credits
                                                                                        201,000,000 497,000,000 514,000,000  
        1.00 par value, 72.00 stated and liquidation value, 4,668,107 shares issued and outstanding at september 30, 2005; and 5,417,735 shares issued and outstanding at december 31, 2004
                                                                                        336,000,000    
        expendable parts and supplies inventories, net of an allowance for obsolescence of 192 at june 30, 2005 and 184 at december 31, 2004
                                                                                         219,000,000   
        operating rights and other intangibles, net of accumulated amortization of 187 at june 30, 2005 and 185 at december 31, 2004
                                                                                         76,000,000   
        1.00 par value, 72.00 stated and liquidation value, 5,105,264 shares issued and outstanding at june 30, 2005; and 5,417,735 shares issued and outstanding at december 31, 2004
                                                                                         368,000,000   
        expendable parts and supplies inventories, net of an allowance for obsolescence of 188 at march 31, 2005 and 184 at december 31, 2004
                                                                                          222,000,000  
        operating rights and other intangibles, net of accumulated amortization of 185 at march 31, 2005 and december 31, 2004
                                                                                          77,000,000  
        series b esop convertible preferred stock, 1.00 par value, 72.00 stated and liquidation value; 5,258,208 shares issued and outstanding at march 31, 2005, and 5,417,735 shares issued and outstanding at december 31, 2004
                                                                                          378,000,000  
        common stock
                                                                                          286,000,000 286,000,000 
      Cashflow Statements:
      Quarterly
      Annual
        Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-09-30 2014-06-30 2014-03-31 2013-12-31 2013-09-30 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-06-30 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-31 2010-12-31 2010-09-30 2010-06-30 2010-03-31 2009-12-31 2009-09-30 2009-06-30 2009-03-31 2008-12-31 2008-09-30 2008-06-30 2008-03-31 2007-06-30 2007-03-31 2006-12-31 2006-09-30 2006-06-30 2006-03-31 2005-12-31 2005-09-30 2005-06-30 2005-03-31 
                                                                                          
          net cash from operating activities
        2,432,000,000 2,260,000,000 1,847,000,000 1,857,000,000 2,378,000,000 1,894,000,000 1,274,000,000 2,449,000,000 2,408,000,000 545,000,000 1,076,000,000 2,608,000,000 2,235,000,000 1,188,000,000 869,000,000 2,535,000,000 1,771,000,000 556,000,000 151,000,000 1,866,000,000 691,000,000 -1,286,000,000 -2,575,000,000 -290,000,000 358,000,000 957,000,000 2,245,000,000 3,272,000,000 1,951,000,000 1,364,000,000 1,500,000,000 2,807,000,000 1,343,000,000 1,918,000,000 1,645,000,000 2,386,000,000 -801,000,000 1,125,000,000 1,854,000,000 3,215,000,000 1,011,000,000 1,479,000,000 2,067,000,000 2,745,000,000 1,636,000,000 4,365,000,000 3,007,000,000 951,000,000 1,131,000,000 1,161,000,000 1,208,000,000 1,004,000,000 550,000,000 463,000,000 632,000,000 831,000,000 1,158,000,000 -98,000,000 986,000,000 788,000,000 318,000,000 514,000,000 1,034,000,000 966,000,000 -73,000,000 -25,000,000 834,000,000 643,000,000 -1,989,000,000 -990,000,000 989,000,000 283,000,000 -210,000,000 360,000,000 -51,000,000 97,000,000 246,000,000 701,000,000  100,000,000 -102,000,000 165,000,000 
          cash flows from investing activities:
                                                                                          
          property and equipment additions:
                                                                                          
          flight equipment, including advance payments
        -1,000,000,000 -609,000,000 -929,000,000 -996,000,000 -987,000,000 -970,000,000 -1,053,000,000 -1,008,000,000 -883,000,000 -1,085,000,000 -856,000,000 -1,074,000,000 -630,000,000 -1,643,000,000 -973,000,000 -603,000,000 -1,276,000,000 -635,000,000 -434,000,000 -395,000,000 -132,000,000 -302,000,000 65,000,000 -30,000,000 -629,000,000 -570,000,000 -548,000,000 -1,167,000,000 -1,059,000,000 -871,000,000 -570,000,000 -1,272,000,000 -991,000,000 -799,000,000 -613,000,000 -697,000,000 -595,000,000 -468,000,000 -505,000,000 -880,000,000 -764,000,000 -640,000,000 -406,000,000 -726,000,000 -451,000,000 -1,179,000,000 -857,000,000 -514,000,000 -841,000,000 -511,000,000 -238,000,000 -527,000,000 -311,000,000 -276,000,000 -301,000,000 -308,000,000 -231,000,000 -195,000,000 -207,000,000 -274,000,000 -302,000,000 -304,000,000 -163,000,000 -286,000,000 -404,000,000 -49,000,000 -112,000,000 -386,000,000 -225,000,000 -263,000,000 -266,000,000 -527,000,000 -89,000,000 -131,000,000 -94,000,000 -69,000,000 -39,000,000 -63,000,000  -80,000,000 -232,000,000 -223,000,000 
          ground property and equipment, including technology
        -200,000,000 -298,000,000 -230,000,000 -213,000,000 -237,000,000 -340,000,000 -275,000,000 -301,000,000 -310,000,000 -517,000,000 -413,000,000 -378,000,000 -370,000,000 -557,000,000 -469,000,000 -355,000,000 -490,000,000 -583,000,000 -396,000,000 -366,000,000 -306,000,000 -246,000,000 -198,000,000 -251,000,000 -308,000,000 -502,000,000 -396,000,000 -393,000,000 -301,000,000 -484,000,000 -397,000,000 -309,000,000 -274,000,000 -361,000,000 -328,000,000 -291,000,000 -207,000,000 -326,000,000 -175,000,000 -166,000,000 -107,000,000 -238,000,000 -156,000,000 -193,000,000 -135,000,000 -410,000,000 -275,000,000 -100,000,000 -111,000,000 -120,000,000 -100,000,000 -120,000,000 -227,000,000 -150,000,000 -296,000,000 -99,000,000 -137,000,000 -38,000,000 -106,000,000 -66,000,000 -119,000,000 -93,000,000 -33,000,000 -42,000,000 -66,000,000 -72,000,000 -64,000,000 -49,000,000 -81,000,000 -47,000,000 -54,000,000 -59,000,000 -31,000,000 -24,000,000         
          acquisition of strategic investments and related
        -54,000,000                                                                                  
          other
        -9,000,000 -466,000,000 124,000,000   33,000,000 87,000,000 33,000,000 10,000,000 -117,000,000 64,000,000 18,000,000 2,000,000 25,000,000 13,000,000 111,000,000 -3,000,000 -195,000,000 -6,000,000 90,000,000 168,000,000 483,000,000 -31,000,000 42,000,000 65,000,000 275,000,000 -100,000,000 83,000,000 49,000,000 -334,000,000 16,000,000 33,000,000 38,000,000 2,000,000 5,000,000 14,000,000 -54,000,000 58,000,000 22,000,000 14,000,000 5,000,000 72,000,000 4,000,000 14,000,000 3,000,000 58,000,000 37,000,000 40,000,000 167,000,000 -3,000,000 50,000,000 -29,000,000 3,000,000 -5,000,000 -64,000,000 32,000,000 -82,000,000 8,000,000 4,000,000 4,000,000 121,000,000 1,000,000 -17,000,000    -1,000,000 -254,000,000 -1,000,000 1,000,000 7,000,000  1,000,000 337,000,000 -1,000,000 5,000,000 8,000,000 -168,000,000 176,000,000 
          net cash from investing activities
        -1,263,000,000 -728,000,000 -1,035,000,000 -1,199,000,000 -1,224,000,000 -1,169,000,000 -1,124,000,000 -809,000,000 -637,000,000 -535,000,000 -131,000,000 -1,382,000,000 -1,100,000,000 -4,735,000,000 -1,288,000,000 -152,000,000 -749,000,000 -480,000,000 -384,000,000 26,000,000 -60,000,000 -1,048,000,000 -1,144,000,000 -4,075,000,000 -2,971,000,000 -767,000,000 -1,125,000,000 -1,566,000,000 -1,105,000,000 -1,012,000,000 -909,000,000 -1,545,000,000 -927,000,000 -1,332,000,000 -1,322,000,000 -978,000,000 -1,734,000,000 445,000,000 -887,000,000 -1,112,000,000 -601,000,000 -1,179,000,000 -1,009,000,000 -955,000,000 -812,000,000 -2,425,000,000 -842,000,000 -563,000,000 -948,000,000 -617,000,000 -561,000,000 -630,000,000 -533,000,000 -428,000,000 -652,000,000 -349,000,000 -412,000,000 -212,000,000 -298,000,000 -576,000,000 -669,000,000 -802,000,000 -262,000,000 -293,000,000 -359,000,000 -245,000,000 -132,000,000 -272,000,000 3,513,000,000 -1,106,000,000 -259,000,000 -550,000,000 -56,000,000 -75,000,000 5,000,000 -64,000,000 -170,000,000 -132,000,000  -653,000,000 -99,000,000 -67,000,000 
          cash flows from financing activities:
                                                                                          
          proceeds from short-term obligations
        1,250,000,000                     379,000,000 2,882,000,000 1,750,000,000          68,000,000                                          
          payments on debt and finance lease obligations
        -1,564,000,000 -896,000,000 -459,000,000 -2,941,000,000 -531,000,000 -1,542,000,000 -262,000,000 -1,437,000,000 -712,000,000 -361,000,000 -724,000,000 -1,820,000,000 -1,166,000,000 -285,000,000 -1,795,000,000 -952,000,000 -1,443,000,000 -1,149,000,000 -1,552,000,000 -1,358,000,000 -1,775,000,000 -6,241,000,000 -606,000,000 -474,000,000 -1,238,000,000                                                          
          cash dividends
        -129,000,000 -122,000,000 -122,000,000 -97,000,000 -99,000,000 -96,000,000 -97,000,000 -64,000,000 -64,000,000 -64,000,000            -260,000,000 -259,000,000 -260,000,000 -228,000,000 -233,000,000 -239,000,000 -240,000,000 -213,000,000 -217,000,000 -215,000,000 -219,000,000 -148,000,000 -149,000,000 -149,000,000 -150,000,000 -103,000,000 -107,000,000 -105,000,000 -107,000,000 -72,000,000 -75,000,000 -176,000,000 -101,000,000 -51,000,000 -51,000,000                                  
          net cash from financing activities
        -435,000,000 -1,002,000,000 -370,000,000 -1,070,000,000 -634,000,000 -1,590,000,000 -371,000,000 -1,512,000,000 -787,000,000 416,000,000 -800,000,000 -1,831,000,000 -1,179,000,000 -305,000,000 -1,808,000,000 -966,000,000 -1,456,000,000 -1,167,000,000 -1,565,000,000 -330,000,000 -790,000,000 -5,957,000,000 10,247,000,000 9,722,000,000 5,344,000,000 842,000,000 -1,451,000,000 -1,662,000,000 -609,000,000 -252,000,000 -1,203,000,000 516,000,000 -787,000,000 -250,000,000 -1,086,000,000 -1,074,000,000 1,680,000,000 -446,000,000 -991,000,000 -2,149,000,000 -674,000,000 -697,000,000 -982,000,000 -1,619,000,000 -790,000,000 -2,274,000,000 -1,647,000,000 -533,000,000 -357,000,000 -491,000,000 -318,000,000 -154,000,000 125,000,000 -300,000,000 -352,000,000 -228,000,000 -396,000,000 -238,000,000 -714,000,000 -223,000,000 -193,000,000 -710,000,000 -1,251,000,000 -367,000,000 -357,000,000 815,000,000 -292,000,000 -185,000,000 571,000,000 1,017,000,000 17,000,000 111,000,000 -74,000,000 -226,000,000 -203,000,000 -181,000,000 -74,000,000 -148,000,000   -104,000,000 85,000,000 
          net increase in cash, cash equivalents and restricted cash equivalents
        734,000,000  442,000,000 -412,000,000 520,000,000  -221,000,000 128,000,000 984,000,000          -1,798,000,000 1,562,000,000 -159,000,000  6,528,000,000 5,357,000,000 2,731,000,000  -331,000,000                                                        
          cash, cash equivalents and restricted cash equivalents at beginning of period
        4,501,000,000  3,421,000,000  3,395,000,000  3,473,000,000  8,569,000,000  10,055,000,000  3,730,000,000                                                         
          cash, cash equivalents and restricted cash equivalents at end of period
        5,235,000,000  442,000,000 -412,000,000 3,941,000,000  -221,000,000 128,000,000 4,379,000,000  145,000,000 -605,000,000 3,429,000,000  -2,227,000,000 1,417,000,000 8,135,000,000  -1,798,000,000 1,562,000,000 9,896,000,000  6,528,000,000 5,357,000,000 6,461,000,000  -331,000,000                                                        
          non-cash transactions:
                                                                                          
          operating leases converted to finance leases
        359,000,000 163,000,000 149,000,000     31,000,000 10,000,000 13,000,000 30,000,000 63,000,000 139,000,000           1,000,000                                                        
          right-of-use assets acquired or modified under operating leases
        179,000,000 240,000,000 82,000,000 -22,000,000 75,000,000 110,000,000 56,000,000 195,000,000 -34,000,000                                                                          
          flight and ground equipment acquired or modified under finance leases
        1,000,000 125,000,000    -35,000,000 12,000,000 6,000,000                                                                          
          the following table provides a reconciliation of cash, cash equivalents and restricted cash equivalents reported within the consolidated balance sheets to the total of the same such amounts shown above:
                                                                                          
          current assets:
                                                                                          
          cash and cash equivalents
        5,053,000,000  460,000,000 -380,000,000 3,711,000,000  -141,000,000 233,000,000 3,877,000,000  167,000,000 -547,000,000 3,215,000,000  -2,198,000,000 1,516,000,000 7,705,000,000  -1,572,000,000 1,897,000,000 8,460,000,000  5,111,000,000 5,399,000,000 5,967,000,000 983,000,000 -110,000,000 99,000,000 1,910,000,000 185,000,000 -506,000,000 439,000,000 1,447,000,000                                                  
          restricted cash included in prepaid expenses and other
        144,000,000  1,000,000 7,000,000 89,000,000  -17,000,000 -12,000,000 126,000,000  -22,000,000 -4,000,000 160,000,000  -5,000,000 -16,000,000 170,000,000  -10,000,000 -41,000,000 213,000,000  76,000,000 74,000,000 39,000,000 166,000,000 -81,000,000 70,000,000 57,000,000 -7,000,000 6,000,000 13,000,000 35,000,000                                                  
          noncurrent assets:
                                                                                          
          restricted cash included in other noncurrent assets
        38,000,000  -19,000,000 -39,000,000 141,000,000  -63,000,000 -93,000,000 376,000,000    54,000,000  -24,000,000 -83,000,000 260,000,000                                                                  
          total cash, cash equivalents and restricted cash equivalents
        5,235,000,000  442,000,000 -412,000,000 3,941,000,000  -221,000,000 128,000,000 4,379,000,000  145,000,000 -605,000,000 3,429,000,000  -2,227,000,000 1,417,000,000 8,135,000,000  -1,798,000,000 1,562,000,000 9,896,000,000  6,528,000,000 5,357,000,000 6,461,000,000  -331,000,000                                                        
          the accompanying notes are an integral part of these condensed consolidated financial statements.
                                                                                          
          cash flows from operating activities:
                                                                                          
          net income
                                                                                          
          adjustments to reconcile net income to net cash from operating activities:
                                                                                          
          depreciation and amortization
                                                    463,000,000 433,000,000 445,000,000 437,000,000                                  313,000,000 
          deferred income taxes
                                                                                          
          loss on fair value investments
                                                                                          
          pension, postretirement and postemployment payments greater than expense
                                                                                          
          changes in certain assets and liabilities:
                                                                                          
          receivables
                                                                                          
          prepaids and other current assets
                                                                                          
          air traffic liability
                                                                                          
          loyalty program deferred revenue
                                                                                          
          profit sharing
                                                                                          
          other payables, deferred revenue and accrued liabilities
                                                                                          
          purchase of equity investments
                     -717,000,000 -53,000,000 -100,000,000         -81,000,000       -450,000,000 -173,000,000 -622,000,000                                             
          purchase of short-term investments
                 -301,000,000 -1,012,000,000 -999,000,000 -2,129,000,000 -101,000,000 -248,000,000 -226,000,000 -1,856,000,000 -5,212,000,000 -2,426,000,000 -3,161,000,000 -4,700,000,000 -3,745,000,000       -27,000,000 -55,000,000 -63,000,000 -57,000,000 -301,000,000 -104,000,000 -463,000,000 -227,000,000 -614,000,000 -378,000,000 -488,000,000 -258,000,000 -127,000,000 -269,000,000 -344,000,000 -1,642,000,000 -240,000,000 -240,000,000 -240,000,000          -239,000,000 -240,000,000                       
          redemption of short-term investments
             7,000,000 117,000,000 467,000,000 546,000,000 1,059,000,000 1,527,000,000 1,064,000,000 897,000,000 220,000,000 295,000,000 943,000,000 1,346,000,000 2,878,000,000 5,664,000,000 3,123,000,000 3,371,000,000 3,954,000,000 3,000,000,000   206,000,000 276,000,000 69,000,000 58,000,000 363,000,000 189,000,000 88,000,000 100,000,000 207,000,000 1,250,000,000 385,000,000 298,000,000 753,000,000 229,000,000 176,000,000 219,000,000 115,000,000 748,000,000 493,000,000 251,000,000 248,000,000              73,000,000                  
          proceeds from long-term obligations
         217,000,000               978,000,000 924,000,000 309,000,000 10,734,000,000 7,785,000,000 3,962,000,000 1,557,000,000 500,000,000 621,000,000   450,000,000 2,004,000,000 450,000,000 997,000,000 41,000,000 980,000,000 273,000,000 59,000,000 200,000,000    1,485,000,000    15,000,000 781,000,000 1,354,000,000 245,000,000 907,000,000    494,000,000 2,082,000,000 34,000,000 356,000,000 118,000,000 1,166,000,000 115,000,000 733,000,000           
          net increase in cash, cash equivalents and restricted cash
                                    237,000,000 100,000,000 -612,000,000                                                    
          cash, cash equivalents and restricted cash at beginning of period
                                    2,748,000,000 1,853,000,000                                                  
          cash, cash equivalents and restricted cash at end of period
                                    2,985,000,000 100,000,000 -612,000,000 1,778,000,000 1,482,000,000                                                  
          supplemental disclosure of cash paid for interest
                                                                                          
          debt agreements modified
                                                                                         
          the accompanying notes are an integral part of these consolidated financial statements.
                                                                                          
          equity investments and other financings
                     330,000,000                                                                  
          acquisition of strategic investments
                              -2,099,000,000                                                          
          fuel inventory
                                                                                          
          noncurrent liabilities
                                                                                          
          net decrease in cash, cash equivalents and restricted cash
                                        -371,000,000                                                  
          right-of-use assets acquired under operating leases
                 218,000,000 299,000,000 -64,000,000 208,000,000 159,000,000 48,000,000 -35,000,000 359,000,000 1,577,000,000 277,000,000 239,000,000 20,000,000 15,000,000 669,000,000 338,000,000 55,000,000 5,000,000 102,000,000                                                        
          flight and ground equipment acquired under finance leases
                 -6,000,000 1,000,000 11,000,000 25,000,000 7,000,000 3,000,000 39,000,000 42,000,000 145,000,000 125,000,000 306,000,000 473,000,000 34,000,000 134,000,000 29,000,000 184,000,000 31,000,000 461,000,000 155,000,000 3,000,000                                                      
          net decrease in cash, cash equivalents and restricted cash equivalents
                    -44,000,000    -434,000,000                                                                  
          restructuring charges
                                                                                          
          pension, postretirement and postemployment payments (greater)/less than expense
                                                                                          
          impairments and equity method results
                                                                                          
          proceeds from sale-leaseback transactions
                                                                                        
          repurchase of common stock
                             -344,000,000 -225,000,000 -209,000,000 -268,000,000 -1,325,000,000 -325,000,000 -325,000,000 -600,000,000 -325,000,000 -327,000,000 -550,000,000 -600,000,000 -200,000,000 -300,000,000 -500,000,000 -1,026,000,000 -775,000,000 -425,000,000 -425,000,000 -925,000,000 -425,000,000 -600,000,000 -350,000,000 -125,000,000 -157,000,000                                  
          fuel card obligation
                             261,000,000 -261,000,000 364,000,000 297,000,000    8,000,000 4,000,000 -5,000,000 295,000,000 7,000,000 334,000,000 225,000,000 -18,000,000 -137,000,000 141,000,000 3,000,000 -23,000,000   1,000,000 1,000,000 1,000,000 57,000,000 -59,000,000 149,000,000 64,000,000 -85,000,000 -13,000,000 171,000,000                           
          pension, postretirement and postemployment payments less/(greater) than expense
                                                                                          
          impairments and equity method losses
                                                                                          
          noncurrent assets
                                                                                          
          sale of equity investments
                                                                                          
          other financings
                          40,000,000 200,000,000                                                              
          cash restricted for airport construction
                          -216,000,000 -294,000,000 1,223,000,000  1,341,000,000 -116,000,000 455,000,000 -117,000,000 -140,000,000 -125,000,000 1,018,000,000 -78,000,000 -112,000,000                                                    
          loans to others
                                                                                          
          prepaid expenses and other current assets
                                                                                          
          accounts payable and accrued liabilities
                                                                                          
          treasury stock contributed to our qualified defined benefit pension plans
                                         350,000,000 350,000,000                                          
          the following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the consolidated balance sheets to the total of the same such amounts shown above:
                                                                                          
          total cash, cash equivalents and restricted cash
                                    2,985,000,000 100,000,000 -612,000,000 1,778,000,000 1,482,000,000                                                  
          payments on long-term debt and finance lease obligations
                                  -355,000,000 -1,165,000,000 -1,285,000,000                                                      
          flight and ground equipment acquired under operating leases
                                    274,000,000                                                      
          payments on long-term debt and capital lease obligations
                                      -648,000,000 -1,849,000,000 -244,000,000 -439,000,000 -255,000,000 -276,000,000 -288,000,000 -306,000,000 -254,000,000 -690,000,000 -459,000,000 -407,000,000 -1,517,000,000 -333,000,000 -301,000,000 -2,485,000,000 -1,477,000,000 -412,000,000 -493,000,000 -347,000,000 -322,000,000 -299,000,000 -1,454,000,000 -669,000,000 -374,000,000 -367,000,000 -746,000,000 -1,032,000,000 -1,934,000,000 -460,000,000 -1,176,000,000 -924,000,000 -1,254,000,000 -368,000,000 -835,000,000 -1,203,000,000 -315,000,000 -538,000,000 -439,000,000 -145,000,000 -97,000,000 -615,000,000 -74,000,000 -226,000,000 -202,000,000 -181,000,000 -74,000,000 -143,000,000 -172,000,000 -1,133,000,000 -100,000,000 -210,000,000 
          flight and ground equipment acquired under capital leases
                                      36,000,000 7,000,000 50,000,000 12,000,000 41,000,000 22,000,000 186,000,000                                              
          other assets:
                                                                                          
          hedge derivative contracts
                                                                                          
          equity investment earnings
                                                                                          
          hedge margin
                                                                                          
          frequent flyer deferred revenue
                                                                                          
          payments on hedge derivative contracts
                                             -50,000,000 -196,000,000                                            
          proceeds from hedge derivative contracts
                                             125,000,000 120,000,000                                            
          net increase in cash and cash equivalents
                                             1,124,000,000 -24,000,000 -46,000,000 -264,000,000 -397,000,000 76,000,000 171,000,000 34,000,000 -334,000,000 518,000,000 -145,000,000 -174,000,000 53,000,000 329,000,000 220,000,000    254,000,000    -11,000,000 -544,000,000 -998,000,000 -479,000,000 306,000,000 -789,000,000 545,000,000 410,000,000 186,000,000 2,095,000,000 -1,079,000,000 747,000,000 -156,000,000 -340,000,000 59,000,000 -249,000,000 -148,000,000 2,000,000 421,000,000    183,000,000 
          cash and cash equivalents at beginning of period
                                         2,762,000,000 1,972,000,000 2,088,000,000 2,844,000,000 2,844,000,000 2,844,000,000 2,416,000,000 2,657,000,000 2,892,000,000 4,607,000,000 4,255,000,000 2,648,000,000 2,170,000,000 2,034,000,000  2,008,000,000  1,463,000,000 
          cash and cash equivalents at end of period
                                         336,000,000 -763,000,000 334,000,000 1,907,000,000 1,124,000,000 -24,000,000 -46,000,000 1,708,000,000 -397,000,000 76,000,000 171,000,000 2,122,000,000 2,510,000,000 3,362,000,000 2,699,000,000 -174,000,000 53,000,000 329,000,000 2,636,000,000 142,000,000 -265,000,000 -372,000,000 2,911,000,000 350,000,000 -548,000,000 -26,000,000 2,881,000,000 -544,000,000 -998,000,000 -479,000,000 4,913,000,000 -789,000,000 545,000,000 410,000,000 4,441,000,000 2,095,000,000 -1,079,000,000 747,000,000 2,492,000,000 1,830,000,000 2,093,000,000  -148,000,000 2,000,000 2,429,000,000  20,000,000 -305,000,000 1,646,000,000 
          net decrease in cash and cash equivalents
                                          -763,000,000 334,000,000 -855,000,000                142,000,000 -265,000,000    -548,000,000                      20,000,000   
          restructuring and other
                                                                                          
          extinguishment of debt
                                                                                          
          equity investment (earnings) loss
                                                                                          
          restricted cash and cash equivalents
                                                            -20,000,000    237,000,000                         
          acquisition of london-heathrow slots
                                                                                          
          proceeds for sales of e190 aircraft
                                                                                          
          flight equipment under capital leases
                                                   26,000,000 39,000,000 28,000,000 28,000,000 10,000,000         19,000,000 9,000,000 23,000,000 66,000,000 126,000,000 4,000,000 79,000,000 120,000,000     11,000,000 8,000,000 13,000,000 4,000,000  19,000,000        
          flight equipment acquired under capital leases
                                              5,000,000 23,000,000 27,000,000                                          
          cash equivalents
                                               -79,000,000 1,137,000,000  119,000,000             2,721,000,000    2,685,000,000                       
          short-term investments
                                                               959,000,000    958,000,000                       
          u.s. government and agency securities
                                               31,000,000 160,000,000  -14,000,000                                        
          asset- and mortgage-backed securities
                                               14,000,000 238,000,000  -8,000,000                                        
          corporate obligations
                                               30,000,000 755,000,000  -31,000,000                                        
          other fixed income securities
                                               8,000,000 53,000,000  1,000,000                                        
          restricted cash equivalents and investments
                                               13,000,000 49,000,000  -1,000,000                                        
          long-term investments
                                               -13,000,000 167,000,000  5,000,000             176,000,000    145,000,000                       
          hedge derivatives
                                                                                          
          fuel hedge contracts
                                               425,000,000 -664,000,000  -77,000,000             190,000,000                           
          interest rate contract
                                               4,000,000 7,000,000  9,000,000                                        
          foreign currency exchange contracts
                                               -46,000,000 -33,000,000  3,000,000             34,000,000                           
          skymiles used pursuant to advance purchase under american express agreements
                                                        -583,000,000 83,000,000 84,000,000 83,000,000 -583,000,000 417,000,000 -250,000,000 83,000,000                           
          build-to-suit leased facilities
                                                     6,000,000 5,000,000 5,000,000  18,000,000 40,000,000 45,000,000                               
          american express advance purchase of restricted skymiles
                                                                                          
          three months ended march 31, 2015
                                                                                          
          operating revenue:
                                                    9,314,000,000 11,114,000,000 10,621,000,000 8,916,000,000  783,000,000                                 
          sales to airline segment
                                                                                          
          exchanged products
                                                                                          
          sales of refined products to third parties
                                                                                          
          operating income
                                                    1,312,000,000 816,000,000 1,566,000,000 661,000,000  595,000,000                                 
          interest expense
                                                    131,000,000 140,000,000 155,000,000 165,000,000  4,000,000                                -268,000,000 
          total assets, end of period
                                                    52,696,000,000 50,648,000,000 50,948,000,000 51,016,000,000  256,000,000                                 
          capital expenditures
        579,000,000 449,000,000 511,000,000 592,000,000 286,000,000  
          free cash flows
        2,432,000,000 2,260,000,000 1,847,000,000 1,857,000,000 2,378,000,000 1,894,000,000 1,274,000,000 2,449,000,000 2,408,000,000 545,000,000 1,076,000,000 2,608,000,000 2,235,000,000 1,188,000,000 869,000,000 2,535,000,000 1,771,000,000 556,000,000 151,000,000 1,866,000,000 691,000,000 -1,286,000,000 -2,575,000,000 -290,000,000 358,000,000 957,000,000 2,245,000,000 3,272,000,000 1,951,000,000 1,364,000,000 1,500,000,000 2,807,000,000 1,343,000,000 1,918,000,000 1,645,000,000 2,386,000,000 -801,000,000 1,125,000,000 1,854,000,000 3,215,000,000 1,011,000,000 1,479,000,000 2,067,000,000 2,745,000,000 2,215,000,000 4,814,000,000 3,518,000,000 1,543,000,000 1,131,000,000 1,447,000,000 1,208,000,000 1,004,000,000 550,000,000 463,000,000 632,000,000 831,000,000 1,158,000,000 -98,000,000 986,000,000 788,000,000 318,000,000 514,000,000 1,034,000,000 966,000,000 -73,000,000 -25,000,000 834,000,000 643,000,000 -1,989,000,000 -990,000,000 989,000,000 283,000,000 -210,000,000 360,000,000 -51,000,000 97,000,000 246,000,000 701,000,000  100,000,000 -102,000,000 165,000,000 
          three months ended march 31, 2014
                                                                                          
          amortization of debt discount
                                                                                          
          pension, postretirement and postemployment expense less than payments
                                                                                          
          restructuring and other items
                                                                                          
          equity investment loss
                                                                                          
          purchase of virgin atlantic shares
                                                                                         
          built-to-suit leased facilities
                                                                                          
          three months ended september 30, 2014
                                                                                          
          three months ended september 30, 2013
                                                                                          
          three months ended june 30, 2014
                                                                                          
          three months ended june 30, 2013
                                                                                          
          three months ended march 31, 2013
                                                                                          
          fuel hedge derivative contracts
                                                                                          
          other assets and liabilities
                                                                                          
          depreciation and amortization expense
                                                         2,000,000                                 
          nine months ended september 30, 2013
                                                                                          
          purchase of investments
                                                          -239,000,000 -240,000,000 -239,000,000 -240,000,000 -239,000,000 -240,000,000 -359,000,000                          
          virgin atlantic investment
                                                                                          
          redemption of investments
                                                          326,000,000 286,000,000 262,000,000 243,000,000 248,000,000 266,000,000 341,000,000                          
          three months ended june 30
                                                                                          
          six months ended june 30
                                                                                          
          loss on extinguishment of debt
                                                                                          
          equity-based compensation expense
                                                                                          
          debt issuance costs
                                                            -33,000,000    -1,000,000 -4,000,000                         
          debt relief through vendor negotiations
                                                                                         
          debt discount on american express agreements
                                                                                          
          jfk redevelopment project funded by third parties
                                                                56,000,000                          
          restricted cash equivalents and short-term investments
                                                               409,000,000    429,000,000                       
          interest rate contracts
                                                               -91,000,000                           
          pension, postretirement and postemployment expense (less than) in excess of payments
                                                                                          
          hedge margin receivables
                                                                                          
          aircraft delivered under seller financing
                                                                    -1,000,000 21,000,000 -269,000,000                  
          debt discount on american express agreement
                                                                    110,000,000                   
          other investments
                                                                                         
          fuel derivatives
                                                                   229,000,000                       
          interest rate derivatives
                                                                   -56,000,000                       
          foreign currency derivatives
                                                                   -37,000,000                       
          fuel hedge derivative instruments
                                                                                          
          impairment of goodwill and other intangible assets
                                                                                          
          restructuring and merger-related items
                                                                                          
          changes in certain current assets and liabilities:
                                                                                          
          decrease in receivables
                                                                                          
          decrease in hedge margin receivables
                                                                                          
          decrease in restricted cash and cash equivalents
                                                                       -26,000,000 203,000,000 -134,000,000 -8,000,000 18,000,000               
          increase in prepaid expenses and other current assets
                                                                                          
          increase in air traffic liability
                                                                                          
          decrease in frequent flyer deferred revenue
                                                                                          
          increase in accounts payable and accrued liabilities
                                                                                          
          (purchase) redemption of investments
                                                                    -377,000,000                      
          increase in cash in connection with the merger
                                                                                          
          proceeds from sales of flight equipment
                                                                    8,000,000 18,000,000 5,000,000 5,000,000 14,000,000 10,000,000 2,000,000 74,000,000   58,000,000 25,000,000 6,000,000          
          proceeds from american express agreement
                                                                                          
          payment of short-term obligations
                                                                                          
          proceeds from sale of treasury stock, net of commissions
                                                                                          
          shares of delta common stock issued or issuable in connection with the merger
                                                                                          
          proceeds from sale of subsidiary
                                                                                          
          increase in restricted cash, cash equivalents and short-term investments
                                                                                          
          flight equipment
                                                                       2,000,000  -342,000,000 184,000,000 201,000,000 -90,000,000              
          decrease in restricted cash, cash equivalents and short-term investments
                                                                                          
          amortization of debt discount (premium)
                                                                                          
          pension, postretirement and postemployment expense in excess of (less than) payments
                                                                                          
          reorganization items
                                                                                          
          decrease in short-term investments
                                                                           72,000,000               
          decrease in prepaid expenses and other current assets
                                                                                          
          increase in frequent flyer deferred revenue
                                                                                          
          proceeds from sales of investments
                                                                                          
          redesignation of cash equivalents to short-term investments
                                                                                          
          increase in other payables, deferred revenue and accrued liabilities
                                                                                          
          increase in short-term investments
                                                                                          
          supplemental disclosure of cash paid (refunded) for:
                                                                                          
          interest
                                                                            227,000,000 205,000,000 130,000,000 180,000,000      178,000,000  146,000,000 265,000,000 185,000,000 
          professional fee disbursements due to bankruptcy
                                                                                 19,000,000 28,000,000 22,000,000       
          interest received from the preservation of cash due to chapter 11 filing
                                                                                          
          debt extinguishment from aircraft renegotiation
                                                                                        
          decrease in restricted cash
                                                                             -4,000,000 2,000,000 4,000,000 58,000,000 27,000,000         
          proceeds of sales of flight equipment
                                                                                          
          proceeds from exit facilities
                                                                                          
          payments on dip facility
                                                                                          
          debt extinguishment from aircraft negotiation
                                                                                          
          flight equipment incentive
                                                                              15,000,000 39,000,000           
          ground equipment
                                                                              3,000,000 1,000,000           
          aircraft delivered under seller-financing
                                                                               61,000,000       18,000,000 148,000,000 85,000,000 
          adjustments to reconcile net loss to net cash from operating activities:
                                                                                          
          gain on extinguishment of debt
                                                                                          
          decrease in restricted investments related to the boston airport terminal project
                                                                                          
          proceeds from sale of wholly owned subsidiary, net of cash remaining with subsidiary
                                                                                      120,000,000    
          proceeds from dip facility
                                                                                          
          interest, net of amounts capitalized
                                                                                77,000,000 168,000,000         
          cash received from aircraft renegotiation
                                                                                        
          income taxes
                                                                                    -1,000,000 1,000,000 2,000,000 
          dividends on series b esop convertible preferred stock
                                                                                         
          current maturities of long-term debt exchanged for shares of common stock
                                                                                        
          proceeds from sale of flight equipment
                                                                                 18,000,000  8,000,000 7,000,000 19,000,000  42,000,000   
          proceeds from sale of investments
                                                                                 34,000,000         
          interest received from the preservation of cash due to chapter 11 proceedings
                                                                                 -38,000,000         
          net loss
                                                                                      -1,235,000,000 -1,130,000,000 -382,000,000 -1,071,000,000 
          asset and other writedowns
                                                                                          
          loss (gain) from sale of investments
                                                                                          
          (increase) decrease in short-term investments
                                                                                          
          increase in receivables
                                                                                          
          decrease (increase) in restricted cash
                                                                                          
          decrease (increase) in prepaid expenses and other current assets
                                                                                          
          increase (decrease) in accounts payable and other accrued liabilities
                                                                                          
          (increase) decrease in restricted investments related to the boston airport terminal project
                                                                                          
          proceeds from dip financing
                                                                                          
          payments on dip financing
                                                                                          
          cash and cash equivalents at beginning of year
                                                                                          
          cash and cash equivalents at end of year
                                                                                          
          interest received due to bankruptcy
                                                                                  -30,000,000 -32,000,000       
          ground property and equipment
                                                                                   -26,000,000 -33,000,000 -29,000,000  -63,000,000 -67,000,000 -66,000,000 
          proceeds from sale of wholly owned subsidiary, net of
                                                                                          
          cash remaining with subsidiary
                                                                                          
          increase in restricted cash
                                                                                   24,000,000 -106,000,000 -63,000,000 313,000,000 -871,000,000   
          proceeds from borrowings under long-term obligations
                                                                                          
          supplemental disclosure of cash paid for:
                                                                                          
          interest paid
                                                                                   201,000,000       
          lease agreement refinancings
                                                                                    156,000,000     
          change in restricted investments related to boston airport terminal project
                                                                                     -1,000,000     
          adjustments to reconcile net loss to net cash from (used in) operating activities:
                                                                                          
          make-whole payments on extinguishment of esop notes
                                                                                          
          payment on termination of accounts receivable securitization
                                                                                          
          dividends payable on esop preferred stock
                                                                                         5,000,000 
          adjustments to reconcile net loss to cash from operating activities
                                                                                       1,151,000,000 500,000,000 519,000,000 
          changes in certain assets and liabilities
                                                                                       79,000,000 -220,000,000 717,000,000 
          decrease in restricted investments related to boston airport terminal project
                                                                                       22,000,000 14,000,000 37,000,000 
          proceeds from borrowing from long-term obligations
                                                                                          
          net cash from (used) in financing activities
                                                                                          
          supplemental cash flow information:
                                                                                          
          cash paid during the period for:
                                                                                          
          issuance of long-term obligations
                                                                                        295,000,000 
          dividends on esop preferred stock
                                                                                          
          operating revenues:
                                                                                          
          passenger
                                                                                          
          mainline
                                                                                         2,649,000,000 
          regional affiliates
                                                                                         690,000,000 
          cargo
                                                                                         132,000,000 
          total operating revenues
                                                                                         3,647,000,000 
          operating expenses:
                                                                                          
          salaries and related costs
                                                                                         1,411,000,000 
          aircraft fuel
                                                                                         884,000,000 
          contracted services
                                                                                         272,000,000 
          contract carrier arrangements
                                                                                         204,000,000 
          landing fees and other rents
                                                                                         215,000,000 
          aircraft maintenance materials and outside repairs
                                                                                         177,000,000 
          aircraft rent
                                                                                         143,000,000 
          passenger commissions and other selling expenses
                                                                                         192,000,000 
          passenger service
                                                                                         84,000,000 
          pension settlements, asset writedowns, restructuring and related items
                                                                                         531,000,000 
          total operating expenses
                                                                                         4,604,000,000 
          operating loss
                                                                                         -957,000,000 
          other income:
                                                                                          
          interest income
                                                                                         14,000,000 
          fair value adjustments of sfas 133 derivatives
                                                                                         -2,000,000 
          miscellaneous expense
                                                                                         -2,000,000 
          total other expense
                                                                                         -258,000,000 
          loss before income taxes
                                                                                         -1,215,000,000 
          income tax benefit
                                                                                         144,000,000 
          preferred stock dividends
                                                                                         -5,000,000 
          net loss attributable to common shareowners
                                                                                         -1,076,000,000 
          basic and diluted loss per share
                                                                                         -7,640,000 
          weighted-average shares used for eps calculation
                                                                                         140,924,006,000,000 
          proceeds from the sale of flight equipment
                                                                                         178,000,000 
          adjustments to reconcile net loss to net cash (used in) provided by operating activities:
                                                                                          
          payments on notes payable
                                                                                          
          aircraft capital leases from sale and leaseback transactions