7Baggers
Quarterly
Annual
    Unit: USD2025-09-30 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 2006-03-31 2005-12-31 2005-09-30 2005-06-30 2005-03-31 
      
                                                                                 
      assets
                                                                                 
      current assets:
                                                                                 
      cash and cash equivalents
    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  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 2,429,000,000 2,008,000,000 1,361,000,000 1,341,000,000 1,646,000,000 
      accounts receivable
    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        
      fuel, expendable parts and supplies inventories, net of allowance for obsolescence of 118 and 120
    1,543,000,000                                                                             
      prepaid expenses and other
    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  859,000,000 976,000,000 846,000,000 780,000,000 898,000,000 627,000,000 637,000,000 597,000,000 590,000,000 774,000,000 464,000,000 562,000,000 512,000,000 613,000,000 605,000,000 554,000,000 
      total current assets
    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  7,868,000,000 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 5,107,000,000  4,283,000,000 3,786,000,000 3,841,000,000 
      noncurrent assets:
                                                                                 
      property and equipment
    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  20,396,000,000 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
    6,198,000,000 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 9,781,000,000 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 9,787,000,000 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 12,104,000,000 227,000,000 227,000,000 227,000,000 227,000,000 227,000,000 
      identifiable intangibles, net of accumulated amortization of 926 and 919
    5,968,000,000                                                                             
      equity investments
    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
    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  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 1,127,000,000 932,000,000 1,048,000,000 1,020,000,000 1,066,000,000 
      total noncurrent assets
    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
    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  43,809,000,000 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 20,558,000,000 20,039,000,000 20,215,000,000 21,561,000,000 21,737,000,000 
      liabilities and stockholders' equity
                                                                                 
      current liabilities:
                                                                                 
      current maturities of debt and finance leases
    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
    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
    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  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 2,347,000,000 1,712,000,000 1,950,000,000 2,221,000,000 2,149,000,000 
      accounts payable
    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  1,630,000,000 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      
      accrued salaries and related benefits
    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  1,111,000,000 1,010,000,000 1,037,000,000 1,027,000,000 1,019,000,000 1,004,000,000 972,000,000 572,000,000 547,000,000 565,000,000 734,000,000 401,000,000 435,000,000 435,000,000 1,151,000,000 1,195,000,000 
      loyalty program deferred revenue
    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 1,100,000,000 839,000,000 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
    2,025,000,000 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  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      
      total current liabilities
    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  11,892,000,000 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 6,314,000,000  4,960,000,000 6,921,000,000 6,809,000,000 
      noncurrent liabilities:
                                                                                 
      debt and finance leases
    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
    5,356,000,000 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
    3,051,000,000 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  11,320,000,000 11,614,000,000 11,745,000,000 11,217,000,000 11,101,000,000 11,005,000,000 10,895,000,000          
      deferred income taxes
    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  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  99,000,000    
      other noncurrent liabilities
    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  1,353,000,000 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
    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  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 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; 1,500,000,000 shares authorized, 659,443,488 and 654,571,606 shares issued
                                                                                 
      additional paid-in capital
    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  13,884,000,000 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 1,560,000,000 1,635,000,000 1,636,000,000 3,119,000,000 2,944,000,000 
      retained earnings
    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      
      accumulated other comprehensive loss
    -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  -3,853,000,000 -3,502,000,000 -3,563,000,000 -2,907,000,000 -2,963,000,000 -3,663,000,000      -2,721,000,000 -2,722,000,000 -2,529,000,000 -2,148,000,000 -2,126,000,000 
      treasury stock
    -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 -181,000,000 -174,000,000 -164,000,000 -163,000,000 -154,000,000 -152,000,000     -224,000,000 -601,000,000 -601,000,000 -2,121,000,000 -2,284,000,000 
      total stockholders' equity
    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
    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.
                                                                                 
      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                                                                            
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 659,454,513 and 654,571,606 shares issued
                                                                                 
      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                                                                           
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 659,478,443 and 654,571,606 shares issued
                                                                                 
      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    330,000,000 169,000,000 
      accounts receivable, net of an allowance
       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  1,645,000,000 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 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 120 and 123
       1,428,000,000                                                                          
      identifiable intangibles, net of accumulated amortization of 919 and 911
       5,975,000,000                                                                          
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 654,571,606 and 654,671,194 shares issued
                                                                                 
      the accompanying notes are an integral part of these consolidated financial statements.
                                                                                 
      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                                                                         
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 654,596,578 and 654,671,194shares issued
                                                                                 
      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                                                                        
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 654,682,022 and 654,671,194shares issued
                                                                                 
      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                                                                       
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 657,166,677 and 654,671,194shares issued
                                                                                 
      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                                                                      
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 654,671,194 and 651,800,786 shares issued
                                                                                 
      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                                                                     
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 654,674,447 and 651,800,786shares issued
                                                                                 
      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                                                                    
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 654,572,361 and 651,800,786shares issued
                                                                                 
      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                                                                   
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 653,855,351 and 651,800,786shares issued
                                                                                 
      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                                                        
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 651,800,786 and 649,720,387 shares issued
                                                                                 
      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                                                                 
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 651,719,217 and 649,720,387shares issued
                                                                                 
      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                                                                
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 651,700,403 and 649,720,387shares issued
                                                                                 
      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  -9,634,000,000 -10,101,000,000 -9,845,000,000 -9,820,000,000 -9,659,000,000 -9,402,000,000      -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                                                               
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 651,562,278 and 649,720,387shares issued
                                                                                 
      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                                                
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 649,720,387 and 647,352,203 shares issued
                                                                                 
      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                                                             
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 649,758,099 and 647,352,203shares issued
                                                                                 
      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                                                            
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 649,637,387 and 647,352,203shares issued
                                                                                 
      identifiable intangibles, net of accumulated amortization of 885 and 883
                      6,009,000,000                                                           
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 649,361,047 and 647,352,203shares issued
                                                                                 
      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                                                          
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 647,352,203 and 651,731,443 shares issued as of 2020 and 2019, respectively
                                                                                 
      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                                                         
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 647,370,857 and 651,731,443shares issued at september 30, 2020 and december 31, 2019, respectively
                                                                                 
      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                                                        
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 647,454,215 and 651,731,443shares issued at june 30, 2020 and december 31, 2019, respectively
                                                                                 
      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                                                       
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 647,386,115 and 651,731,443shares issued at march 31, 2020 and december 31, 2019, respectively
                                                                                 
      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                                                      
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 651,731,443 and 688,136,306 shares issued at december 31, 2019 and 2018, respectively
                                                                                 
      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                                                  
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 655,694,564 and 688,136,306shares issued at september 30, 2019 and december 31, 2018, respectively
                                                                                 
      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                                                    
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 659,145,280 and 688,136,306shares issued at june 30, 2019 and december 31, 2018, respectively
                                                                                 
      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                                                   
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 663,896,862 and 688,136,306shares issued at march 31, 2019 and december 31, 2018, respectively
                                                                                 
      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                                                  
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 688,136,306 and 714,674,160 shares issued at december 31, 2018 and 2017, respectively
                                                                                 
      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  15,545,000,000 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 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  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 1,302,000,000 1,186,000,000 935,000,000 1,125,000,000 1,030,000,000 
      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  1,619,000,000 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  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 6,654,000,000 6,557,000,000 6,657,000,000 12,459,000,000 12,545,000,000 
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 693,799,424 and 714,674,160shares issued at september 30, 2018 and december 31, 2017, respectively
                                                                                 
      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                                                
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 699,486,944 and 714,674,160shares issued at june 30, 2018 and december 31, 2017, respectively
                                                                                 
      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                                               
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 710,603,639 and 714,674,160shares issued at march 31, 2018 and december 31, 2017, respectively
                                                                                 
      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                                              
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 714,674,160 and 744,886,938 shares issued at december 31, 2017 and 2016, respectively
                                                                                 
      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                                             
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 720,433,073 and 744,886,938shares issued at september 30, 2017 and december 31, 2016, respectively
                                                                                 
      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                                            
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 731,451,949 and 744,886,938shares issued at june 30, 2017 and december 31, 2016, respectively
                                                                                 
      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                                           
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 742,894,980 and 744,886,938shares issued at march 31, 2017 and december 31, 2016, respectively
                                                                                 
      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                                          
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 744,886,938 and 799,850,675 shares issued at december 31, 2016 and 2015, respectively
                                                                                 
      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          
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 750,515,601 and 799,850,675shares issued at september 30, 2016 and december 31, 2015, respectively
                                                                                 
      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                                        
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 762,988,573 and 799,850,675shares issued at june 30, 2016 and december 31, 2015, respectively
                                                                                 
      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                                       
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 785,605,157 and 799,850,675shares issued at march 31, 2016 and december 31, 2015, respectively
                                                                                 
      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                                      
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 799,850,675 and 845,048,310 shares issued at december 31, 2015 and 2014, respectively
                                                                                 
      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                                     
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 807,525,032 and 845,048,310shares issued at september 30, 2015 and december 31, 2014, respectively
                                                                                 
      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                                    
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 816,405,334 and 845,048,310shares issued at june 30, 2015 and december 31, 2014, respectively
                                                                                 
      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                                   
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 837,176,320 and 845,048,310shares issued at march 31, 2015 and december 31, 2014, respectively
                                                                                 
      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                                  
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 845,048,310 and 869,484,981 shares issued at december 31, 2014 and 2013, respectively
                                                                                 
      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  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  721,000,000 705,000,000 525,000,000 540,000,000 673,000,000 591,000,000 565,000,000 345,000,000 422,000,000 422,000,000 320,000,000 626,000,000 525,000,000 540,000,000 591,000,000 594,000,000 
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 856,710,375 and 869,484,981shares issued at september 30, 2014 and december 31, 2013, respectively
                                                                                 
      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                                
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 862,693,843 and 869,484,981shares issued at june 30, 2014 and december 31, 2013, respectively
                                                                                 
      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                               
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 867,634,912 and 869,484,981shares issued at march 31, 2014 and december 31, 2013, respectively
                                                                                 
      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
                                                                                 
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 869,484,981 and 867,866,505shares issued at december 31, 2013 and 2012, respectively
                                                                                 
      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                             
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 873,523,221 and 867,866,505shares issued at september 30, 2013 and december 31, 2012, respectively
                                                                                 
      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:
                                                                                 
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 875,870,354 and 867,866,505shares issued at june 30, 2013 and december 31, 2012, respectively
                                                                                 
      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                       
      operating revenue:
                                                                                 
      passenger:
                                                                                 
      mainline
                                                     6,796,000,000 5,876,000,000 25,237,000,000 7,017,000,000 6,644,000,000 5,675,000,000                       
      regional carriers
                                                     1,698,000,000 1,457,000,000 6,570,000,000 1,675,000,000 1,807,000,000 1,551,000,000                       
      total passenger revenue
                                                     8,494,000,000 7,333,000,000 31,807,000,000 8,692,000,000 8,451,000,000 7,226,000,000                       
      cargo
                                                     232,000,000 238,000,000 990,000,000 243,000,000 262,000,000 244,000,000                       
      other
                                                     981,000,000 929,000,000 3,873,000,000 988,000,000 1,019,000,000 943,000,000                  251,000,000 299,000,000 225,000,000 296,000,000 299,000,000 
      total operating revenue
                                                     9,707,000,000 8,500,000,000 36,670,000,000 9,923,000,000 9,732,000,000 8,413,000,000                       
      operating expense:
                                                                                 
      aircraft fuel and related taxes
                                                     2,595,000,000 2,289,000,000 10,150,000,000 2,221,000,000 3,305,000,000 2,233,000,000                       
      salaries and related costs
                                                     1,922,000,000 1,911,000,000 7,266,000,000 1,850,000,000 1,825,000,000 1,763,000,000                       
      regional carrier expense
                                                     1,444,000,000                            
      aircraft maintenance materials and outside repairs
                                                     472,000,000 491,000,000 1,955,000,000 493,000,000 548,000,000 561,000,000                       
      depreciation and amortization
                                                     415,000,000 405,000,000 1,565,000,000 392,000,000 388,000,000 386,000,000                       
      contracted services
                                                     409,000,000 401,000,000 1,566,000,000 402,000,000 397,000,000 378,000,000                       
      passenger commissions and other selling expenses
                                                     408,000,000 357,000,000 1,590,000,000 440,000,000 393,000,000 380,000,000                       
      landing fees and other rents
                                                     359,000,000 323,000,000 1,336,000,000 360,000,000 347,000,000 305,000,000                       
      passenger service
                                                     197,000,000 164,000,000 732,000,000 201,000,000 187,000,000 171,000,000                       
      profit sharing
                                                     118,000,000 20,000,000 372,000,000 174,000,000 135,000,000                        
      aircraft rent
                                                     55,000,000 60,000,000 272,000,000 65,000,000 68,000,000 75,000,000                       
      restructuring and other items
                                                     34,000,000 102,000,000 452,000,000 149,000,000 193,000,000 -12,000,000                       
      total operating expense
                                                     8,793,000,000 8,278,000,000 34,495,000,000 8,615,000,000 9,598,000,000 8,031,000,000                       
      operating income
                                                     914,000,000 222,000,000 2,175,000,000 1,308,000,000 134,000,000 382,000,000                       
      other income:
                                                                                 
      interest expense
                                                     -172,000,000 -178,000,000 -812,000,000 -195,000,000 -207,000,000 -221,000,000                       
      amortization of debt discount
                                                     -41,000,000 -42,000,000 -193,000,000 -48,000,000 -49,000,000 -51,000,000                       
      miscellaneous
                                                     -15,000,000 1,000,000 -27,000,000 -1,000,000 -42,000,000 17,000,000                       
      total other income
                                                     -228,000,000 -219,000,000 -1,150,000,000 -256,000,000 -298,000,000 -255,000,000                       
      income before income taxes
                                                     686,000,000 3,000,000 1,025,000,000 1,052,000,000 -164,000,000 127,000,000                       
      income tax benefit
                                                     -1,000,000 4,000,000 -16,000,000 -5,000,000 -4,000,000 -3,000,000                       
      net income
                                                     685,000,000 7,000,000 1,009,000,000 1,047,000,000 -168,000,000 124,000,000                       
      basic earnings per share
                                                     810,000 10,000 1,200,000 1,240,000 -200,000 150,000                       
      diluted earnings per share
                                                     800,000 10,000 1,190,000 1,230,000 -200,000 150,000                       
      comprehensive income
                                                     780,000,000 158,000,000  1,073,000,000 -140,000,000 372,000,000                       
      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                           
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 874,326,995 and 867,866,505shares issued at march 31, 2013 and december 31, 2012, respectively
                                                                                 
      contract carrier arrangements
                                                      1,399,000,000 5,647,000,000 1,447,000,000 1,416,000,000 1,375,000,000                       
      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                          
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 867,866,505 and 861,499,734shares issued at december 31, 2012 and 2011, respectively
                                                                                 
      loss on extinguishment of debt
                                                       -118,000,000 -12,000,000                         
      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                         
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 866,884,968 and 861,499,734shares issued at september 30, 2012 and december 31, 2011, respectively
                                                                                 
      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                        
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 866,728,208 and 861,499,734shares issued at june 30, 2012 and december 31, 2011, respectively
                                                                                 
      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                       
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 865,986,926 and 861,499,734shares issued at march 31, 2012 and december 31, 2011, respectively
                                                                                 
      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:
                                                                                 
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 861,499,734 and 847,716,723shares issued at december 31, 2011 and 2010, respectively
                                                                                 
      total stockholders' (deficit) equity
                                                           -1,396,000,000                      
      total liabilities and stockholders' (deficit) equity
                                                           43,499,000,000                      
      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
                                                                                 
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 861,436,003 and 847,716,723
                                                                                 
      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
                                                                                 
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 860,344,084 and 847,716,723
                                                                                 
      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
                                                                                 
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 859,547,693 and 847,716,723
                                                                                 
      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:
                                                                                 
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 847,716,723 and 794,873,058 shares issued at december 31, 2010 and 2009, respectively
                                                                                 
      total stockholders’ equity
                                                               897,000,000  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  43,809,000,000 44,339,000,000 43,539,000,000 44,853,000,000 44,480,000,000 44,395,000,000 45,014,000,000          
      cash equivalents
                                                                3,174,000,000                 
      restricted cash equivalents and short-term investments
                                                                449,000,000                 
      long-term investments
                                                                119,000,000                 
      hedge derivatives
                                                                                 
      aircraft fuel derivatives
                                                                301,000,000                 
      interest rate derivatives
                                                                -100,000,000                 
      foreign currency derivatives
                                                                -56,000,000                 
      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                
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 801,701,956 and 794,873,058 shares issued at june 30, 2010 and december 31, 2009, respectively
                                                                                 
      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               
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 798,952,757 and 794,873,058 shares issued at march 31, 2010 and december 31, 2009, respectively
                                                                                 
      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              
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 794,873,058 and 702,685,427 shares issued at december 31, 2009 and 2008, respectively
                                                                                 
      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             
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 789,122,254 and 702,685,427 shares issued at september 30, 2009 and december 31, 2008, respectively
                                                                                 
      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            
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 787,148,627 and 702,685,427 shares issued at june 30, 2009 and december 31, 2008, respectively
                                                                                 
      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           
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 779,743,607 and 702,685,427 shares issued at march 31, 2009 and december 31, 2008, respectively
                                                                                 
      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:
                                                                                 
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 702,685,427 and 299,464,669 shares issued at december 31, 2008 and 2007, respectively
                                                                                 
      (accumulated deficit) retained earnings
                                                                       -8,608,000,000 -7,170,000,000 -7,120,000,000 -6,076,000,000       
      accumulated other comprehensive income
                                                                       -4,080,000,000 152,000,000 1,451,000,000 650,000,000 435,000,000      
      restricted cash
                                                                        228,000,000 517,000,000 218,000,000 520,000,000 933,000,000 870,000,000 1,119,000,000 368,000,000 358,000,000 
      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 18,160,000,000 18,591,000,000 19,026,000,000 20,935,000,000 20,719,000,000 
      accumulated depreciation
                                                                        -642,000,000 -525,000,000 -411,000,000 -299,000,000 -6,440,000,000 -6,621,000,000 -6,846,000,000 -7,002,000,000 -6,783,000,000 
      ground property and equipment
                                                                        2,069,000,000 2,025,000,000 1,981,000,000 1,943,000,000 4,760,000,000 4,791,000,000 4,852,000,000 4,897,000,000 4,837,000,000 
      flight and ground equipment under capital leases
                                                                        621,000,000 624,000,000 616,000,000 602,000,000 558,000,000 535,000,000 523,000,000 516,000,000 517,000,000 
      accumulated amortization
                                                                        -128,000,000 -111,000,000 -88,000,000 -63,000,000 -171,000,000 -213,000,000 -211,000,000 -197,000,000 -184,000,000 
      advance payments for equipment
                                                                        375,000,000 306,000,000 234,000,000 239,000,000 44,000,000 44,000,000 44,000,000 65,000,000 89,000,000 
      total property and equipment
                                                                        12,060,000,000 11,999,000,000 11,945,000,000 11,701,000,000 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       
      pension and related benefits
                                                                        2,979,000,000 2,995,000,000 3,003,000,000 3,002,000,000    5,209,000,000 5,031,000,000 
      postretirement benefits
                                                                        857,000,000 856,000,000 858,000,000 865,000,000    1,742,000,000 1,756,000,000 
      shareowners’ equity:
                                                                                 
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 316,059,820 and 299,464,669 shares issued at september 30, 2008 and december 31, 2007, respectively
                                                                                 
      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        
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 311,321,385 and 299,464,669 shares issued at june 30, 2008 and december 31, 2007, respectively
                                                                                 
      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       
      common stock at 0.0001 par value; 1,500,000,000 shares authorized, 299,559,933 and 299,464,669 shares issued at march 31, 2008 and december 31, 2007, respectively
                                                                                 
      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      
      liabilities subject to compromise
                                                                            18,695,000,000 17,380,000,000 16,385,000,000   
      shareowners’ equity
                                                                                 
      predecessor common stock at 0.01 par value; 900,000,000 shares authorized, 202,081,648 shares issued at december 31, 2006
                                                                                 
      successor common stock at 0.0001 par value; 1,500,000,000 shares authorized, 299,464,669 shares issued at december 31, 2007
                                                                                 
      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      
      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 
      accounts payable, deferred credits and other accrued liabilities
                                                                            1,638,000,000 1,407,000,000 1,100,000,000 1,678,000,000 1,698,000,000 
      deferred credits
                                                                            307,000,000     
      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 march 31, 2006; and 4,667,568 shares issued and outstanding at december 31, 2005
                                                                                 
      unearned compensation under employee stock ownership plan
                                                                             -89,000,000 -86,000,000 -92,000,000 -101,000,000 
      total employee stock ownership plan preferred stock
                                                                              250,000,000 276,000,000 277,000,000 
      shareowners’ deficit:
                                                                                 
      0.01 par value, 900,000,000 shares authorized, 202,081,648 shares issued at march 31, 2006 and december 31, 2005
                                                                            2,000,000     
      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 
      restricted investments for boston airport terminal project
                                                                             46,000,000 53,000,000 76,000,000 90,000,000 
      accrued rent
                                                                               155,000,000 143,000,000 
      long-term debt issued by massachusetts port authority
                                                                               498,000,000 498,000,000 
      deferred credits:
                                                                                 
      deferred gains on sale and leaseback transactions
                                                                               350,000,000 363,000,000 
      deferred revenue and other credits
                                                                             186,000,000 201,000,000 147,000,000 151,000,000 
      employee stock ownership plan
                                                                                 
      preferred stock:
                                                                                 
      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   
      0.01 par value, 900,000,000 shares authorized, 202,081,648 shares issued at september 30, 2005; and 1.50 par value, 450,000,000 shares authorized, 190,745,445 shares issued at december 31, 2004
                                                                              2,000,000   
      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  
      0.01 par value, 900,000,000 shares authorized, 202,081,648 shares issued at june 30, 2005; and 1.50 par value, 450,000,000 shares authorized, 190,745,445 shares issued at december 31, 2004
                                                                               2,000,000  
      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 
    The information provided in this report is taken from www.sec.gov and many other data providers. While we have conducted our best efforts to ensure that the parsed data is accurate, we cannot guarantee its accuracy. Please use caution and understand that any consequences of its use are your own responsibility.