7Baggers

Asbury Automotive Group, Inc
(NYSE:ABG) 

ABG stock logo

Asbury Automotive Group, Inc., together with its subsidiaries, operates as an automotive retailer in the United States. It offers a range of automotive products and services, including new and used vehicles; and vehicle repair and maintenance services, replacement parts, and collision repair service...

Founded: 1995
Full Time Employees: 8,500
Sector: Consumer Cyclical
Industry: Auto & Truck Dealerships

Share this website to your friends
• Market Cap:
• Exchange:
• Shs Outstanding:
• Employees:
• Beta:
• Return on Equity (ROE) ttm:
• Return on Assets (ROA) ttm:
• EPS ttm:
• Book value per Share:
• Cash per Share:
• Current ast per Share:
• P/E ttm:
• P/E forward:
• P/E ttm high:
• P/E ttm low:
• P/S ttm:
• P/B ttm:
• P/FCF ttm:
• PEG ratio:
• Cash Ratio ttm:
• Quick Ratio ttm:
• Current Ratio ttm:
• Gross Mgn ttm:
• EBITDA Mgn ttm:
• Operating Mgn ttm:
• Net Income Mgn ttm:
• Trailing Div yield:
• Forward Div yield:
• Payout Ratio ttm:
• Ex-Dividend date:
• Target Price High:
• Target Price Low:
• Target Price Mean:
• Number of Analysts:
• Debt Ratio ttm:
• Debt to Equity ttm:
• Total Net Debt:
At a glance:
Bull Thesis:
Bear Thesis:
Main Competitors:
Moat:
Income Statements:
Quarterly
Annual
    Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-12-31 2014-09-30 2014-06-30 2014-03-31 2013-12-31 2013-09-30 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-06-30 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-31 2010-06-30 2010-03-31 2009-12-31 2009-09-30 2009-06-30 2009-03-31 2008-12-31 2008-09-30 2008-06-30 2008-03-31 2007-12-31 2007-09-30 2007-06-30 2007-03-31 2006-12-31 2006-09-30 2006-06-30 2006-03-31 2005-12-31 2005-09-30 2005-03-31 2004-12-31 2003-12-31 2002-12-31 
                                                                                         
      revenue:
                                                                                         
      new vehicle
    2,100,800,000 2,525,300,000 2,528,900,000 2,303,900,000 2,138,100,000 2,457,100,000 2,163,500,000 2,164,900,000 2,064,300,000 2,058,500,000 1,861,900,000 1,942,700,000 1,767,700,000 1,846,300,000 1,799,200,000 1,864,500,000 1,855,600,000 1,284,500,000 1,129,500,000 1,368,400,000 1,151,700,000 1,225,600,000 957,900,000 761,800,000 822,100,000 1,039,400,000 986,900,000 965,200,000 871,800,000 1,022,400,000 980,500,000 928,700,000 857,100,000 964,100,000 881,600,000 882,900,000 832,500,000 935,600,000 940,900,000 897,000,000 838,400,000 931,800,000 964,000,000 926,200,000 830,500,000 851,800,000 821,300,000 831,500,000 726,000,000 785,000,000 759,700,000 743,000,000 664,500,000 704,700,000 674,700,000 663,400,000 589,700,000 605,600,000 563,100,000 578,300,000 571,200,000 587,700,000 528,800,000 518,600,000 560,500,000 517,700,000 443,100,000 457,500,000 726,500,000 785,600,000 737,200,000 775,516,000 893,977,000 891,281,000 824,451,000 806,008,000 913,194,000 918,116,000 823,164,000 883,625,000 878,323,000 806,490,000    
      used vehicle
    1,206,300,000 1,291,600,000 1,412,200,000 1,285,800,000 1,235,800,000 1,258,600,000 1,294,700,000 1,308,000,000 1,356,900,000 1,068,700,000 1,111,700,000 1,107,300,000 1,126,500,000 1,153,000,000 1,330,700,000 1,362,500,000 1,350,900,000 929,500,000 879,000,000 816,200,000 690,900,000 659,300,000 569,500,000 447,500,000 493,200,000 541,200,000 546,900,000 533,600,000 509,900,000 473,400,000 497,500,000 516,900,000 484,600,000 437,500,000 455,600,000 479,200,000 461,800,000 468,900,000 476,400,000 470,200,000 460,900,000 457,700,000 493,000,000 507,600,000 473,400,000 422,300,000 457,000,000 445,300,000 416,900,000 381,100,000 421,600,000 395,200,000 366,300,000 312,400,000 335,600,000 339,100,000 325,700,000 305,200,000 326,700,000 322,700,000 301,400,000 285,900,000 252,400,000 243,900,000 243,400,000 242,400,000 210,700,000 168,700,000 277,900,000 314,300,000 326,100,000 311,130,000 378,140,000 395,503,000 378,147,000 321,429,000 394,402,000 384,561,000 358,106,000 321,322,000 361,889,000 345,472,000    
      parts and service
    626,800,000 658,300,000 659,400,000 601,500,000 587,600,000 590,400,000 593,100,000 580,900,000 590,400,000 513,300,000 526,500,000 526,100,000 515,600,000 516,000,000 536,100,000 520,200,000 501,900,000 331,400,000 297,100,000 292,400,000 262,000,000 261,800,000 237,200,000 169,200,000 221,600,000 229,700,000 227,600,000 224,500,000 217,600,000 211,100,000 206,100,000 204,500,000 199,300,000 196,600,000 197,200,000 200,800,000 191,500,000 193,600,000 200,400,000 195,300,000 189,200,000 185,200,000 190,600,000 188,200,000 176,700,000 170,700,000 168,300,000 168,200,000 159,400,000 156,100,000 154,000,000 153,900,000 147,600,000 136,100,000 143,500,000 145,700,000 145,100,000 142,100,000 145,900,000 149,200,000 144,600,000 157,700,000 152,800,000 154,800,000 152,800,000 159,700,000 163,600,000 144,500,000 182,000,000 183,500,000 183,500,000               
      finance and insurance
    179,000,000 201,300,000 200,300,000 182,000,000 187,000,000 198,500,000 185,400,000 192,400,000 189,700,000 171,200,000 166,100,000 166,300,000 172,500,000 190,600,000 200,000,000 203,000,000 203,400,000 109,400,000 100,400,000 107,000,000 88,300,000 87,300,000 80,800,000 66,600,000 70,400,000 83,700,000 80,600,000 80,200,000 71,500,000 77,300,000 73,300,000 73,500,000 68,200,000 72,700,000 67,700,000 68,900,000 65,900,000 68,400,000 65,400,000 64,900,000 62,300,000 65,800,000 68,800,000 67,600,000 61,200,000 58,200,000 59,000,000 58,400,000 53,400,000 52,800,000 54,700,000 52,400,000 47,000,000 43,000,000 44,100,000 42,800,000 39,000,000 36,600,000 37,000,000 36,000,000 32,400,000 30,400,000 26,000,000 21,900,000 26,300,000 22,600,000 20,900,000 24,100,000 34,200,000 39,000,000 38,600,000 37,719,000 42,210,000 43,576,000 38,684,000 36,418,000 41,198,000 43,224,000 35,648,000 35,942,000 40,434,000 38,290,000    
      total revenue
    4,113,000,000 4,676,500,000 4,800,900,000 4,373,100,000 4,148,500,000 4,504,500,000 4,236,700,000 4,246,200,000 4,201,200,000 3,811,700,000 3,666,200,000 3,742,500,000 3,582,300,000 3,705,900,000 3,865,900,000 3,950,200,000 3,911,800,000 2,654,800,000 2,406,000,000 2,584,000,000 2,192,900,000 2,234,000,000 1,845,400,000 1,445,100,000 1,607,300,000 1,894,000,000 1,842,000,000 1,803,500,000 1,670,800,000 1,784,200,000 1,757,400,000 1,723,600,000 1,609,200,000 1,670,900,000 1,602,100,000 1,631,800,000 1,551,700,000 1,666,500,000 1,683,100,000 1,627,400,000 1,550,800,000 1,640,500,000 1,716,400,000                                           
      yoy
    -0.86% 3.82% 13.32% 2.99% -1.25% 18.18% 15.56% 13.46% 17.28% 2.85% -5.17% -5.26% -8.42% 39.59% 60.68% 52.87% 78.38% 18.84% 30.38% 78.81% 36.43% 17.95% 0.18% -19.87% -3.80% 6.15% 4.81% 4.64% 3.83% 6.78% 9.69% 5.63% 3.71% 0.26% -4.81% 0.27% 0.06% 1.58% -1.94%                                               
      qoq
    -12.05% -2.59% 9.78% 5.41% -7.90% 6.32% -0.22% 1.07% 10.22% 3.97% -2.04% 4.47% -3.34% -4.14% -2.13% 0.98% 47.35% 10.34% -6.89% 17.83% -1.84% 21.06% 27.70% -10.09% -15.14% 2.82% 2.13% 7.94% -6.36% 1.52% 1.96% 7.11% -3.69% 4.29% -1.82% 5.16% -6.89% -0.99% 3.42% 4.94% -5.47% -4.42%                                            
      cost of sales:
                                                                                         
      total cost of sales
    3,386,100,000 3,883,500,000 3,998,300,000 3,621,200,000 3,424,300,000 3,754,700,000 3,518,600,000 3,515,500,000 3,451,200,000 3,138,700,000 2,992,700,000 3,029,400,000 2,886,100,000 2,967,900,000 3,098,100,000 3,147,500,000 3,119,800,000 2,112,500,000 1,926,000,000 2,086,800,000 1,810,200,000 1,861,700,000 1,509,500,000 1,202,300,000 1,334,900,000 1,592,400,000 1,548,900,000 1,508,500,000 1,391,600,000 1,502,400,000 1,479,400,000 1,445,800,000 1,343,800,000 1,402,500,000 1,341,800,000 1,364,700,000 1,291,600,000 1,401,900,000 1,417,400,000 1,359,800,000 1,290,000,000 1,380,100,000 1,443,700,000 1,418,300,000 1,285,400,000 1,258,400,000 1,261,000,000 1,255,500,000 1,125,600,000 1,151,400,000 1,164,700,000 1,122,600,000 1,018,700,000 1,006,200,000 1,002,800,000 994,600,000 910,000,000 909,700,000 889,700,000 897,300,000 876,700,000 885,800,000 797,100,000 784,600,000 820,300,000 786,500,000 690,200,000 656,500,000 1,022,300,000 1,109,800,000 1,076,700,000 1,095,176,000 1,262,719,000 1,274,121,000 1,191,507,000 1,117,308,000 1,290,686,000 1,289,155,000 1,175,421,000 1,197,147,000 1,228,405,000 1,141,467,000    
      gross profit
    726,900,000 793,100,000 802,500,000 751,900,000 724,200,000 749,800,000 718,000,000 730,700,000 750,000,000 673,000,000 673,500,000 713,100,000 696,200,000 738,100,000 767,800,000 802,700,000 792,000,000 542,300,000 480,000,000 497,200,000 382,700,000 372,300,000 335,900,000 242,800,000 272,400,000 301,600,000 293,100,000 295,000,000 279,200,000 281,800,000 278,000,000 277,800,000 265,400,000 268,400,000 260,300,000 267,100,000 260,100,000 264,600,000 265,700,000 267,600,000 260,800,000 260,400,000 272,700,000 271,300,000 256,400,000 244,600,000 244,600,000 247,900,000 230,100,000 223,600,000 225,300,000 221,900,000 206,700,000 190,000,000 195,100,000 196,400,000 189,500,000 179,800,000 183,000,000 188,900,000 172,900,000 175,900,000 162,900,000 154,600,000 162,700,000 155,900,000 148,100,000 138,300,000 198,300,000 212,600,000 208,700,000 204,654,000 228,315,000 232,412,000 224,063,000 207,989,000 229,760,000 228,782,000 211,548,000 208,203,000 220,030,000 210,494,000    
      yoy
    0.37% 5.77% 11.77% 2.90% -3.44% 11.41% 6.61% 2.47% 7.73% -8.82% -12.28% -11.16% -12.10% 36.11% 59.96% 61.44% 106.95% 45.66% 42.90% 104.78% 40.49% 23.44% 14.60% -17.69% -2.44% 7.03% 5.43% 6.19% 5.20% 4.99% 6.80% 4.01% 2.04% 1.44% -2.03% -0.19% -0.27% 1.61% -2.57% -1.36% 1.72% 6.46% 11.49% 9.44% 11.43% 9.39% 8.57% 11.72% 11.32% 17.68% 15.48% 12.98% 9.08% 5.67% 6.61% 3.97% 9.60% 2.22% 12.34% 22.19% 6.27% 12.83% 9.99% 11.79% -17.95% -26.67% -29.04% -32.42% -13.15% -8.52% -6.86% -1.60% -0.63% 1.59% 5.92% -0.10% 4.42% 8.69%        
      qoq
    -8.35% -1.17% 6.73% 3.82% -3.41% 4.43% -1.74% -2.57% 11.44% -0.07% -5.55% 2.43% -5.68% -3.87% -4.35% 1.35% 46.04% 12.98% -3.46% 29.92% 2.79% 10.84% 38.34% -10.87% -9.68% 2.90% -0.64% 5.66% -0.92% 1.37% 0.07% 4.67% -1.12% 3.11% -2.55% 2.69% -1.70% -0.41% -0.71% 2.61% 0.15% -4.51% 0.52% 5.81% 4.82% 0.00% -1.33% 7.74% 2.91% -0.75% 1.53% 7.35% 8.79% -2.61% -0.66% 3.64% 5.39% -1.75% -3.12% 9.25% -1.71% 7.98% 5.37% -4.98% 4.36% 5.27% 7.09% -30.26% -6.73% 1.87% 1.98% -10.36% -1.76% 3.73% 7.73% -9.48% 0.43% 8.15% 1.61% -5.38% 4.53%     
      gross margin %
    17.67% 16.96% 16.72% 17.19% 17.46% 16.65% 16.95% 17.21% 17.85% 17.66% 18.37% 19.05% 19.43% 19.92% 19.86% 20.32% 20.25% 20.43% 19.95% 19.24% 17.45% 16.67% 18.20% 16.80% 16.95% 15.92% 15.91% 16.36% 16.71% 15.79% 15.82% 16.12% 16.49% 16.06% 16.25% 16.37% 16.76% 15.88% 15.79% 16.44% 16.82% 15.87% 15.89% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity%    
      operating expenses:
                                                                                         
      selling, general, and administrative
    510,400,000 364,725,000 527,100,000 475,500,000 456,400,000 352,900,000 466,500,000 476,500,000 468,600,000 414,100,000 391,700,000 408,600,000 403,000,000 421,500,000 438,200,000 448,300,000 455,500,000 295,700,000 268,700,000 269,700,000 239,800,000 228,500,000 206,500,000 152,200,000 194,700,000 206,100,000 202,000,000 200,700,000 191,000,000 192,200,000 188,800,000 190,600,000 184,200,000 180,500,000 182,500,000 185,600,000 181,100,000 183,300,000 185,700,000 182,300,000 181,200,000                                             
      depreciation and amortization
    22,600,000 23,000,000 21,200,000 19,000,000 19,200,000 19,200,000 18,900,000 18,200,000 18,700,000 17,200,000 17,000,000 16,800,000 16,700,000 15,400,000 17,100,000 18,100,000 18,400,000 11,300,000 10,700,000 10,100,000 9,800,000 9,500,000 9,800,000 9,700,000 9,500,000 9,500,000 9,100,000 9,000,000 8,600,000 8,500,000 8,500,000 8,500,000 8,200,000 8,100,000 8,100,000 8,000,000 7,900,000 7,700,000 7,800,000 7,700,000 7,500,000 7,500,000 7,500,000 7,200,000 7,300,000 7,000,000 6,700,000 6,400,000 6,300,000 6,300,000 6,200,000 5,900,000 5,900,000 5,700,000 5,500,000 5,800,000 5,700,000 5,800,000 5,800,000 5,800,000 5,300,000 5,600,000 5,700,000 6,200,000 5,600,000 5,900,000 6,100,000 5,700,000 6,500,000 5,700,000 5,500,000 -37,553,000 5,385,000 5,348,000 5,328,000 5,045,000 5,076,000 5,113,000 4,975,000 5,299,000 4,945,000 5,250,000    
      asset impairments
     115,000,000 11,700,000  14,300,000 14,100,000  135,400,000                                                                              
      income from operations
    193,900,000 126,300,000 242,600,000 257,400,000 234,300,000 239,600,000 232,700,000 100,500,000 262,800,000 124,500,000 264,700,000 287,700,000 276,500,000 302,600,000 313,600,000 335,500,000 320,800,000 236,100,000 201,000,000 218,400,000 136,300,000 134,500,000 119,100,000 82,200,000 35,000,000 79,100,000 82,200,000 85,900,000 77,800,000 77,300,000 80,800,000 79,600,000 73,200,000 74,100,000 69,700,000 71,600,000 72,300,000 80,100,000 70,700,000 78,100,000 68,900,000 69,700,000 76,600,000 82,200,000 73,100,000 65,700,000 66,100,000 72,200,000 64,200,000 58,100,000 58,000,000 57,400,000 52,600,000 47,500,000 49,400,000 48,200,000 42,800,000 40,400,000 34,300,000 37,500,000 22,400,000 36,100,000 28,500,000 28,200,000 27,900,000 23,700,000 18,700,000 -521,100,000 29,700,000 36,200,000 35,200,000 38,711,000 46,863,000 53,439,000 42,349,000 42,407,000 49,688,000 51,954,000 40,859,000 41,983,000 44,579,000 32,160,000    
      yoy
    -17.24% -47.29% 4.25% 156.12% -10.84% 92.45% -12.09% -65.07% -4.95% -58.86% -15.59% -14.25% -13.81% 28.17% 56.02% 53.62% 135.36% 75.54% 68.77% 165.69% 289.43% 70.04% 44.89% -4.31% -55.01% 2.33% 1.73% 7.91% 6.28% 4.32% 15.93% 11.17% 1.24% -7.49% -1.41% -8.32% 4.93% 14.92% -7.70% -4.99% -5.75% 6.09% 15.89% 13.85% 13.86% 13.08% 13.97% 25.78% 22.05% 22.32% 17.41% 19.09% 22.90% 17.57% 44.02% 28.53% 91.07% 11.91% 20.35% 32.98% -19.71% 52.32% 52.41% -105.41% -6.06% -34.53% -46.88% -1446.13% -36.62% -32.26% -16.88% -8.72% -5.69% 2.86% 3.65% 1.01% 11.46% 61.55%        
      qoq
    53.52% -47.94% -5.75% 9.86% -2.21% 2.97% 131.54% -61.76% 111.08% -52.97% -7.99% 4.05% -8.63% -3.51% -6.53% 4.58% 35.87% 17.46% -7.97% 60.23% 1.34% 12.93% 44.89% 134.86% -55.75% -3.77% -4.31% 10.41% 0.65% -4.33% 1.51% 8.74% -1.21% 6.31% -2.65% -0.97% -9.74% 13.30% -9.48% 13.35% -1.15% -9.01% -6.81% 12.45% 11.26% -0.61% -8.45% 12.46% 10.50% 0.17% 1.05% 9.13% 10.74% -3.85% 2.49% 12.62% 5.94% 17.78% -8.53% 67.41% -37.95% 26.67% 1.06% 1.08% 17.72% 26.74% -103.59% -1854.55% -17.96% 2.84% -9.07% -17.40% -12.31% 26.19% -0.14% -14.65% -4.36% 27.15% -2.68% -5.82% 38.62%     
      operating margin %
    4.71% 2.70% 5.05% 5.89% 5.65% 5.32% 5.49% 2.37% 6.26% 3.27% 7.22% 7.69% 7.72% 8.17% 8.11% 8.49% 8.20% 8.89% 8.35% 8.45% 6.22% 6.02% 6.45% 5.69% 2.18% 4.18% 4.46% 4.76% 4.66% 4.33% 4.60% 4.62% 4.55% 4.43% 4.35% 4.39% 4.66% 4.81% 4.20% 4.80% 4.44% 4.25% 4.46% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% -Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity%    
      other expenses:
                                                                                         
      floor plan interest expense
    21,000,000 25,600,000 26,700,000 18,100,000 20,700,000 23,800,000 22,300,000 21,000,000 22,800,000 8,100,000  800,000 600,000 2,400,000 1,900,000 1,500,000 2,600,000 1,700,000 1,500,000 2,100,000 2,900,000 3,600,000 3,000,000 4,100,000 7,000,000 8,200,000 9,000,000 10,500,000 10,200,000 9,500,000 8,400,000 8,000,000 6,600,000 5,600,000 5,800,000 6,100,000 5,300,000 4,900,000 5,000,000 5,000,000 4,400,000 4,100,000 4,100,000 -4,000,000 -3,900,000 -3,100,000 -3,000,000 -3,300,000 -3,000,000 -3,400,000 -2,900,000 -3,100,000 -3,100,000 -3,000,000 -3,000,000 -3,000,000 -2,700,000 -2,700,000 -2,000,000 -2,300,000 -2,700,000 -4,000,000 -4,100,000 -4,400,000 -4,200,000 -4,700,000 -5,000,000 -6,200,000 -7,500,000 -8,000,000 -9,100,000 -10,083,000 -10,618,000 -11,190,000            
      other interest expense
    48,000,000 52,500,000 51,300,000 41,400,000 42,300,000 44,200,000 45,700,000 45,100,000 44,100,000 40,800,000 38,700,000 39,300,000 37,300,000 38,400,000 38,600,000 37,600,000 37,600,000 50,700,000 14,800,000 14,400,000 14,000,000 15,000,000 12,900,000 11,800,000 17,000,000 13,700,000 13,700,000 13,600,000 13,900,000 13,700,000 13,200,000 13,200,000 13,000,000 13,700,000 13,400,000 13,400,000 13,300,000 13,100,000 13,200,000 13,400,000 13,400,000 12,500,000 10,700,000 -10,500,000 -10,300,000 -10,700,000 -9,600,000 -9,500,000 -9,100,000 -9,200,000 -11,100,000 -9,500,000 -9,200,000 -9,000,000 -8,600,000 -8,600,000 -9,300,000 -8,800,000 -10,000,000 -10,300,000 -10,500,000 -9,500,000 -9,500,000 -10,200,000 -9,400,000 -9,000,000 -9,800,000 -10,700,000 -10,900,000 -9,400,000 -9,100,000 -9,208,000 -9,083,000 -9,168,000            
      gain on dealership divestitures
    -125,800,000 -34,400,000 -35,700,000 -5,900,000 -4,100,000  -5,000,000 -3,600,000      -202,700,000   -33,100,000  -8,000,000   -3,900,000 -24,700,000  -33,700,000                                                             
      total other expenses
    -56,700,000 43,600,000 42,300,000 53,600,000 58,900,000 48,100,000 63,000,000 62,500,000 66,900,000 25,825,000 38,700,000 26,600,000 38,000,000 -161,900,000 40,500,000 67,800,000 7,100,000       15,900,000 10,900,000 21,900,000 22,700,000 12,400,000 24,100,000 23,200,000 21,700,000 21,400,000 19,800,000 19,700,000 19,600,000 20,100,000 19,200,000   19,200,000 18,600,000 4,100,000 -5,600,000 -15,000,000 -14,700,000 -46,200,000 -13,100,000 -13,200,000 -12,700,000 -12,900,000 -20,900,000 -13,500,000 -13,500,000 -13,200,000 -13,000,000 -13,000,000                              
      income before income taxes
    250,600,000 82,700,000 200,200,000 203,800,000 175,400,000 171,700,000 169,700,000 38,000,000 195,800,000 75,600,000 226,000,000 261,100,000 238,500,000 464,500,000 273,100,000 267,700,000 313,700,000 183,700,000 192,700,000 201,900,000 119,400,000 119,800,000 127,900,000 66,300,000 24,100,000 57,200,000 59,500,000 73,500,000 53,700,000 54,100,000 59,100,000 58,200,000 53,400,000 38,675,000 50,100,000         67,200,000 58,400,000 19,500,000 53,000,000 59,000,000 51,500,000 45,200,000 37,100,000 43,900,000 39,100,000 34,300,000 36,400,000 35,200,000 29,400,000 27,000,000 20,400,000 23,200,000 7,600,000 22,300,000 14,500,000 13,400,000 13,800,000 9,600,000 3,400,000 -503,700,000 9,700,000 19,100,000 18,000,000 18,818,000 28,405,000 33,733,000 3,867,000 25,750,000 29,161,000 31,078,000 21,821,000 23,003,000 27,968,000 15,494,000    
      income tax expense
    62,800,000 22,700,000 53,100,000 51,000,000 43,300,000 42,900,000 43,400,000 9,900,000 48,800,000 20,100,000 56,800,000 64,800,000 57,100,000 111,300,000 68,100,000 66,300,000 76,000,000 43,200,000 45,700,000 49,800,000 26,600,000 30,700,000 31,700,000 16,700,000 4,600,000 13,600,000 14,500,000 18,600,000 12,800,000 13,700,000 14,800,000 15,000,000 13,300,000 11,900,000 19,400,000 19,600,000 19,100,000 39,800,000 19,300,000 22,300,000 19,200,000 24,400,000 31,000,000 26,100,000 22,500,000 7,600,000 20,600,000 22,800,000 20,000,000 18,000,000 14,300,000 16,700,000 15,200,000 12,200,000 13,600,000 13,600,000 11,400,000 10,300,000 7,600,000 9,000,000 2,900,000 8,600,000 5,600,000 5,900,000 4,300,000 3,600,000 1,200,000 -150,700,000 2,600,000 7,500,000 6,800,000 7,327,000 9,185,000 12,567,000 1,458,000 9,815,000 10,935,000 11,654,000 8,183,000 8,571,000 10,488,000 5,810,000    
      net income
    187,800,000 60,000,000 147,100,000 152,800,000 132,100,000 128,800,000 126,300,000 28,100,000 147,100,000 55,500,000 169,200,000 196,400,000 181,400,000 353,200,000 205,000,000 201,400,000 237,700,000 140,500,000 147,000,000 152,100,000 92,800,000 89,100,000 96,200,000 49,600,000 19,500,000 43,600,000 45,000,000 54,900,000 40,900,000 40,400,000 44,300,000 43,200,000 40,100,000 42,500,000 30,700,000 31,900,000 34,000,000 67,100,000 32,400,000 36,700,000 31,000,000 41,100,000 51,100,000 41,100,000 35,900,000 11,800,000 32,500,000 35,900,000 31,400,000 26,900,000 22,700,000 27,000,000 32,500,000 22,800,000 20,700,000 21,100,000 17,600,000 21,500,000 12,300,000 14,200,000 19,900,000 12,800,000 7,400,000 200,000 7,400,000 5,500,000 300,000 -365,400,000 6,000,000 10,900,000 10,500,000 10,953,000 19,010,000 20,559,000 433,000 12,013,000 17,179,000 19,004,000 12,553,000 20,502,000 14,953,000 9,640,000    
      yoy
    42.17% -53.42% 16.47% 443.77% -10.20% 132.07% -25.35% -85.69% -18.91% -84.29% -17.46% -2.48% -23.69% 151.39% 39.46% 32.41% 156.14% 57.69% 52.81% 206.65% 375.90% 104.36% 113.78% -9.65% -52.32% 7.92% 1.58% 27.08% 2.00% -4.94% 44.30% 35.42% 17.94% -36.66% -5.25% -13.08% 9.68% 63.26% -36.59% -10.71% -13.65% 248.31% 57.23% 14.48% 14.33% -56.13% 43.17% 32.96% -3.38% 17.98% 9.66% 27.96% 84.66% 6.05% 68.29% 48.59% -11.56% 67.97% 66.22% 7000.00% 168.92% 132.73% 2366.67% -100.05% 23.33% -49.54% -97.14% -3436.07% -68.44% -46.98% 2324.94% -8.82% 10.66% 8.18% -96.55% -41.41% 14.89% 97.14%        
      qoq
    213.00% -59.21% -3.73% 15.67% 2.56% 1.98% 349.47% -80.90% 165.05% -67.20% -13.85% 8.27% -48.64% 72.29% 1.79% -15.27% 69.18% -4.42% -3.35% 63.90% 4.15% -7.38% 93.95% 154.36% -55.28% -3.11% -18.03% 34.23% 1.24% -8.80% 2.55% 7.73% -5.65% 38.44% -3.76% -6.18% -49.33% 107.10% -11.72% 18.39% -24.57% -19.57% 24.33% 14.48% 204.24% -63.69% -9.47% 14.33% 16.73% 18.50% -15.93% -16.92% 42.54% 10.14% -1.90% 19.89% -18.14% 74.80% -13.38% -28.64% 55.47% 72.97% 3600.00% -97.30% 34.55% 1733.33% -100.08% -6190.00% -44.95% 3.81% -4.14% -42.38% -7.53% 4648.04% -96.40% -30.07% -9.60% 51.39% -38.77% 37.11% 55.11%     
      net income margin %
    4.57% 1.28% 3.06% 3.49% 3.18% 2.86% 2.98% 0.66% 3.50% 1.46% 4.62% 5.25% 5.06% 9.53% 5.30% 5.10% 6.08% 5.29% 6.11% 5.89% 4.23% 3.99% 5.21% 3.43% 1.21% 2.30% 2.44% 3.04% 2.45% 2.26% 2.52% 2.51% 2.49% 2.54% 1.92% 1.95% 2.19% 4.03% 1.93% 2.26% 2.00% 2.51% 2.98% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% -Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity%    
      earnings per share:
                                                                                         
      basic—
                                                                                         
      diluted—
                                                                                         
      weighted-average shares outstanding:
                                                                                         
      basic
    19 19,500,000 19.5 19.7 19.6 19,900,000 19.7 20.1 20.3 20,900,000 20.6 20.9 21.6 22,300,000 22.1 22.1 22.8 19,900,000 19.3 19.3 19.3 19,200,000 19.2 19.2 19.1 19,100,000 19.1 19.1 19.2 20,100,000 20,000,000 20,300,000 20,600,000 20,800,000 20,600,000 20,800,000 21,000,000 22,500,000 22,000,000 22,100,000 24,300,000 26,300,000 25,900,000 26,800,000 27,500,000 29,900,000 29,800,000 30,300,000 30,400,000 30,700,000 30,700,000 30,800,000 30,900,000 31,100,000 31,100,000 31,100,000 31,100,000 31,800,000 31,700,000 32,100,000 32,400,000 32,200,000 32,200,000 32,000,000 32,000,000 32,200,000 32,100,000 31,700,000 31,700,000 31,700,000 31,600,000 32,463,000 32,450,000 32,490,000 33,333,000 33,187,000 33,258,000 33,077,000 32,922,000 32,691,000 32,737,000 32,588,000    
      performance share units
        0.1 99,999.9   0.1   0.1 0.1   0.1 0.1 99,999.9 0.1 0.1  99,999.9 0.1 0.1 0.1 99,999.9 0.1 0.1 0.1  200,000 100,000 100,000  100,000 100,000 100,000  100,000 100,000 100,000  100,000 100,000 100,000  100,000 100,000 100,000 100,000 200,000 100,000 100,000  100,000 100,000 100,000  100,000 100,000 300,000 100,000 100,000  100,000 100,000 100,000 75,000 200,000                 
      diluted
    19    19.7    20.4 5.275 20.7 21 21.7                                                                         
      other expenses
                                                                                         
      restricted stock
      0.1    0.1 0.1  0.025 0.1   99,999.9 0.1   99,999.9 0.1 0.1 0.1  0.1  0.1 99,999.9 0.1 0.1 0.1  100,000 100,000 100,000  100,000 100,000      25,000 100,000 100,000 100,000  100,000 100,000 200,000  200,000 200,000 200,000 -100,000 200,000 100,000 200,000 -100,000 100,000 100,000 200,000 200,000 200,000 100,000 200,000 200,000 200,000 25,000 200,000 200,000 200,000               
      performance share units
        0.1 99,999.9   0.1   0.1 0.1   0.1 0.1 99,999.9 0.1 0.1  99,999.9 0.1 0.1 0.1 99,999.9 0.1 0.1 0.1  200,000 100,000 100,000  100,000 100,000 100,000  100,000 100,000 100,000  100,000 100,000 100,000  100,000 100,000 100,000 100,000 200,000 100,000 100,000  100,000 100,000 100,000  100,000 100,000 300,000 100,000 100,000  100,000 100,000 100,000 75,000 200,000                 
      diluted
     4.9 19.6 19.7  19,999,979.9 19.8 20.2      22,399,977.6 22.2 22.2 22.9 20,099,980.5 19.5 19.5 19.4 19,299,980.7 19.4 19.3 19.3 19,299,980.7 19.3 19.3 19.4 -200,000 20,300,000 20,500,000 20,800,000  20,800,000 21,000,000 21,100,000 -300,000 22,100,000 22,200,000 24,400,000 -500,000 26,100,000 27,000,000 27,700,000 -300,000 30,000,000 30,500,000 30,700,000  31,100,000 31,100,000 31,200,000 -100,000 31,500,000 31,500,000 31,700,000 8,250,000 32,500,000 32,900,000  33,000,000  -100,000 33,100,000 33,200,000  8,075,000 32,100,000 32,200,000 32,300,000               
      other operating income
                 -750,000 -1,100,000  -2,700,000                -200,000                             -400,000 -400,000    -400,000                   
      restricted stock
      0.1    0.1 0.1  0.025 0.1   99,999.9 0.1   99,999.9 0.1 0.1 0.1  0.1  0.1 99,999.9 0.1 0.1 0.1  100,000 100,000 100,000  100,000 100,000      25,000 100,000 100,000 100,000  100,000 100,000 200,000  200,000 200,000 200,000 -100,000 200,000 100,000 200,000 -100,000 100,000 100,000 200,000 200,000 200,000 100,000 200,000 200,000 200,000 25,000 200,000 200,000 200,000               
      diluted
    19    19.7    20.4 5.275 20.7 21 21.7                                                                         
      other operating expense
                   800,000  -800,000 -400,000 -1,000,000 -3,200,000 2,350,000 500,000 -1,300,000 10,200,000 250,000 -200,000 -600,000 1,800,000           -500,000 3,200,000 -300,000 -200,000  300,000 800,000 300,000 100,000 -200,000 1,900,000 1,400,000 4,400,000 100,000  -900,000 300,000 -400,000 -700,000 1,700,000 2,800,000 10,400,000   -500,000 -200,000 -400,000  -300,000 -100,000 2,000,000 -300,000               
      loss on dealership divestitures
               -13,500,000    28,700,000                                                                      
      franchise rights impairment
                            23,000,000                                                             
      loss on extinguishment of long-term debt
                            20,600,000                          -6,800,000       -100,000 -400,000         -425,000 -1,700,000     -786,000            
      total other expenses (income)
                     10,425,000 8,300,000                   -26,800,000 19,000,000                                               
      total other expense
                       16,500,000 16,900,000 4,500,000 -8,800,000                                  -13,400,000 -13,400,000 -13,900,000 -14,300,000 -14,800,000 -13,800,000 -14,000,000 -14,800,000 -14,100,000 -14,100,000 -15,300,000 17,400,000 -20,000,000 -17,100,000 -17,200,000 -19,893,000 -18,458,000 -19,706,000            
      swap interest expense
                                  100,000 200,000 200,000 400,000 400,000 600,000 600,000 700,000 800,000 800,000 800,000 1,000,000 1,000,000 -500,000 -500,000 -500,000 -500,000 -400,000 -600,000 -300,000 -100,000 -900,000 -1,200,000 -1,200,000 -1,300,000 -1,200,000 -1,300,000 -1,300,000 -1,400,000 -1,400,000 -1,400,000                         
      gain on divestiture
                             -2,925,000  -11,700,000                                                          
      other operating expenses
                                 100,000 -100,000 -900,000  175,000   -1,200,000                                                 
      earnings per common share:
                                                                                         
      weighted-average common shares outstanding:
                                                                                         
      basic
    19 19,500,000 19.5 19.7 19.6 19,900,000 19.7 20.1 20.3 20,900,000 20.6 20.9 21.6 22,300,000 22.1 22.1 22.8 19,900,000 19.3 19.3 19.3 19,200,000 19.2 19.2 19.1 19,100,000 19.1 19.1 19.2 20,100,000 20,000,000 20,300,000 20,600,000 20,800,000 20,600,000 20,800,000 21,000,000 22,500,000 22,000,000 22,100,000 24,300,000 26,300,000 25,900,000 26,800,000 27,500,000 29,900,000 29,800,000 30,300,000 30,400,000 30,700,000 30,700,000 30,800,000 30,900,000 31,100,000 31,100,000 31,100,000 31,100,000 31,800,000 31,700,000 32,100,000 32,400,000 32,200,000 32,200,000 32,000,000 32,000,000 32,200,000 32,100,000 31,700,000 31,700,000 31,700,000 31,600,000 32,463,000 32,450,000 32,490,000 33,333,000 33,187,000 33,258,000 33,077,000 32,922,000 32,691,000 32,737,000 32,588,000    
      operating expenses
                                                                                         
      other operating expenses (income)
                                       1,900,000  1,050,000 1,500,000                                               
      income from continuing operations before income taxes
                                       51,500,000 53,100,000 106,900,000 51,700,000 58,900,000 50,300,000 65,600,000 82,200,000                                           
      income from continuing operations
                                       31,900,000 34,000,000 67,100,000 32,400,000 36,600,000 31,100,000 41,200,000 51,200,000 41,100,000 35,900,000 11,900,000 32,400,000 36,200,000 31,500,000 27,200,000 22,800,000 27,200,000 23,900,000 22,100,000 22,800,000 21,600,000 18,000,000 16,700,000 12,800,000 14,200,000 4,700,000 13,700,000 8,900,000 7,500,000 9,500,000 6,000,000 2,200,000 -353,000,000 7,100,000 11,600,000 11,200,000 11,491,000 19,220,000 21,166,000 2,409,000 15,935,000 18,226,000 19,424,000 13,638,000 14,432,000 17,480,000 9,684,000    
      discontinued operations, net of tax
                                           100,000 -100,000 -100,000 -100,000   -100,000 100,000 -300,000 -100,000 -300,000 -100,000 -200,000 8,600,000 700,000 -2,100,000 -500,000 -400,000 4,800,000 -500,000  15,200,000 -900,000 -1,500,000 -7,300,000 -2,100,000 -500,000 -1,900,000 -12,400,000 -1,100,000 -700,000 -700,000 -538,000 -210,000 -607,000            
      continuing operations
                                       1,530,000 1,620,000 3,040,000 1,470,000 1,660,000 1,280,000 1,640,000 1,980,000 1,530,000 1,310,000 440,000 1,090,000 1,190,000 1,040,000 890,000 740,000 880,000 770,000 710,000 730,000 690,000 580,000 530,000 400,000 440,000 150,000 430,000 280,000 240,000 300,000 190,000 70,000 -11,130,000 220,000 370,000 350,000 360 590 650 70 470 550 590 410       
      discontinued operations
                                              -10,000   -10,000  -10,000 -10,000 -10,000   280,000 20,000 -60,000 -10,000 -10,000 160,000 -10,000  460,000 -30,000 -50,000 -230,000 -70,000 -20,000 -60,000 -390,000 -30,000 -30,000 -20,000 -10  -20            
      gain on divestitures
                                             -13,500,000 -21,400,000                                           
      selling, general and administrative
                                             136,600,000 188,800,000 181,900,000 175,700,000 171,100,000 171,500,000 169,200,000 159,800,000 157,300,000 159,700,000 154,200,000 148,100,000 136,800,000 141,100,000 142,100,000 141,400,000 134,300,000 141,200,000 142,800,000 134,800,000 134,600,000 129,100,000 120,700,000 129,400,000 126,700,000 123,700,000 118,100,000 162,200,000 168,700,000 168,300,000 -1,211,710,000 176,067,000 173,625,000 176,386,000 160,537,000 174,996,000 171,715,000 165,714,000 160,921,000 170,506,000 173,084,000    
      revenues:
                                                                                         
      total revenues
                                               1,689,600,000 1,541,800,000 1,503,000,000 1,505,600,000 1,503,400,000 1,355,700,000 1,375,000,000 1,390,000,000 1,344,500,000 1,225,400,000 1,196,200,000 1,197,900,000 1,191,000,000 1,099,500,000 1,089,500,000 1,072,700,000 1,086,200,000 1,049,600,000 1,061,700,000 960,000,000 939,200,000 983,000,000 942,400,000 838,300,000 794,800,000 1,220,600,000 1,322,400,000 1,285,400,000 1,299,830,000 1,491,034,000 1,506,533,000 1,415,570,000 1,325,297,000 1,520,446,000 1,517,937,000 1,386,969,000 1,405,350,000 1,448,435,000 1,351,961,000    
      convertible debt discount amortization
                                                          -100,000 -200,000 -100,000 -200,000 -100,000 -300,000 -200,000 -400,000 -400,000 -400,000 -500,000 -500,000 -500,000                   
      stock options
                                                          100,000 200,000 300,000  600,000 600,000 700,000 500,000 700,000 -300,000 800,000 700,000  25,000  100,000                
      other expense:
                                                                                         
      performance share units
        0.1 99,999.9   0.1   0.1 0.1   0.1 0.1 99,999.9 0.1 0.1  99,999.9 0.1 0.1 0.1 99,999.9 0.1 0.1 0.1  200,000 100,000 100,000  100,000 100,000 100,000  100,000 100,000 100,000  100,000 100,000 100,000  100,000 100,000 100,000 100,000 200,000 100,000 100,000  100,000 100,000 100,000  100,000 100,000 300,000 100,000 100,000  100,000 100,000 100,000 75,000 200,000                 
      restricted share units
                                                                  100,000                       
      diluted
                                                                33,600,000  33,300,000    32,400,000                   
      interest income
                                                                 100,000  100,000  100,000  100,000 100,000 300,000 1,000,000 430,000 900,000 1,041,000 1,965,000 1,841,000 1,523,000 1,021,000 727,000 208,000 275,000 258,000    
      other income:
                                                                                         
      cash dividends declared per common share
                                                                                         
      stock options
                                                          100,000 200,000 300,000  600,000 600,000 700,000 500,000 700,000 -300,000 800,000 700,000  25,000  100,000                
      diluted
     4.9 19.6 19.7  19,999,979.9 19.8 20.2      22,399,977.6 22.2 22.2 22.9 20,099,980.5 19.5 19.5 19.4 19,299,980.7 19.4 19.3 19.3 19,299,980.7 19.3 19.3 19.4 -200,000 20,300,000 20,500,000 20,800,000  20,800,000 21,000,000 21,100,000 -300,000 22,100,000 22,200,000 24,400,000 -500,000 26,100,000 27,000,000 27,700,000 -300,000 30,000,000 30,500,000 30,700,000  31,100,000 31,100,000 31,200,000 -100,000 31,500,000 31,500,000 31,700,000 8,250,000 32,500,000 32,900,000  33,000,000  -100,000 33,100,000 33,200,000  8,075,000 32,100,000 32,200,000 32,300,000               
      restricted stock
      0.1    0.1 0.1  0.025 0.1   99,999.9 0.1   99,999.9 0.1 0.1 0.1  0.1  0.1 99,999.9 0.1 0.1 0.1  100,000 100,000 100,000  100,000 100,000      25,000 100,000 100,000 100,000  100,000 100,000 200,000  200,000 200,000 200,000 -100,000 200,000 100,000 200,000 -100,000 100,000 100,000 200,000 200,000 200,000 100,000 200,000 200,000 200,000 25,000 200,000 200,000 200,000               
      diluted
                                                                33,600,000  33,300,000    32,400,000                   
      performance units
                                                                         200,000 500,000               
      parts, service and collision repair
                                                                           175,465,000 176,707,000 176,173,000 174,288,000 161,442,000 171,652,000 172,036,000 170,051,000 164,461,000 167,789,000 161,709,000    
      other income
                                                                           258,000 343,000 397,000 292,000 2,991,000 400,000 481,000 344,000 -221,000 29,000     
      weighted-average common shares outstanding:
                                                                                         
      basic
    19 19,500,000 19.5 19.7 19.6 19,900,000 19.7 20.1 20.3 20,900,000 20.6 20.9 21.6 22,300,000 22.1 22.1 22.8 19,900,000 19.3 19.3 19.3 19,200,000 19.2 19.2 19.1 19,100,000 19.1 19.1 19.2 20,100,000 20,000,000 20,300,000 20,600,000 20,800,000 20,600,000 20,800,000 21,000,000 22,500,000 22,000,000 22,100,000 24,300,000 26,300,000 25,900,000 26,800,000 27,500,000 29,900,000 29,800,000 30,300,000 30,400,000 30,700,000 30,700,000 30,800,000 30,900,000 31,100,000 31,100,000 31,100,000 31,100,000 31,800,000 31,700,000 32,100,000 32,400,000 32,200,000 32,200,000 32,000,000 32,000,000 32,200,000 32,100,000 31,700,000 31,700,000 31,700,000 31,600,000 32,463,000 32,450,000 32,490,000 33,333,000 33,187,000 33,258,000 33,077,000 32,922,000 32,691,000 32,737,000 32,588,000    
      diluted
                                                                            33,244,000 33,329,000 34,161,000 34,067,000 33,841,000 33,709,000 33,584,000 32,896,000 33,032,000 32,781,000    
      earnings per common share:
                                                                                         
      basic
                                                                                   310 460 300    
      diluted
                                                                                   310 450 290    
      other expense
                                                                                         
    Balance Sheets:
    Quarterly
    Annual
      Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-12-31 2014-09-30 2014-06-30 2014-03-31 2013-12-31 2013-09-30 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-06-30 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-31 2010-06-30 2010-03-31 2009-12-31 2009-09-30 2009-06-30 2009-03-31 2008-12-31 2008-09-30 2008-06-30 2008-03-31 2007-12-31 2007-09-30 2007-06-30 2007-03-31 2006-12-31 2006-09-30 2006-06-30 2006-03-31 2005-12-31 2005-09-30 2005-03-31 2005-03-15 2004-12-31 
                                                                                          
        assets
                                                                                          
        current assets:
                                                                                          
        cash and cash equivalents
      25,300,000 40,400,000 32,200,000 54,800,000 124,600,000 69,400,000 60,300,000 67,200,000 29,000,000 45,700,000 41,600,000 77,500,000 296,800,000 235,300,000 141,300,000 100,100,000 284,300,000 178,900,000 330,600,000 102,300,000 27,800,000 1,400,000 4,100,000 613,200,000 388,600,000 3,500,000 1,800,000 9,600,000 10,900,000 8,300,000 6,800,000 2,500,000 4,800,000 4,700,000 2,800,000 2,700,000 3,100,000 3,400,000 3,700,000 1,800,000 4,400,000 2,800,000 3,900,000 1,900,000 1,100,000 2,900,000 11,100,000 7,000,000 6,100,000 5,400,000 1,300,000 67,000,000 100,000 6,200,000 5,900,000 8,700,000 4,300,000 11,400,000 8,200,000 23,200,000 7,900,000 27,000,000 29,400,000 84,700,000 33,700,000 41,900,000 35,700,000 91,600,000 21,400,000 34,800,000 25,700,000 53,354,000 40,794,000 48,680,000 94,497,000 129,170,000 133,475,000 89,097,000 59,874,000 57,194,000 25,998,000 39,253,000 57,194 28,093,000 
        short-term investments
      2,200,000  900,000 2,800,000 6,600,000 14,400,000 9,000,000 10,500,000 6,900,000  7,400,000 10,300,000 5,500,000  7,900,000 10,800,000 12,500,000                                                                    
        contracts-in-transit
      187,900,000 239,200,000 201,600,000 213,700,000 263,900,000 263,800,000 203,900,000 210,200,000 222,000,000 279,700,000 177,200,000 167,200,000 156,300,000 220,800,000 160,500,000 212,700,000 205,600,000 212,500,000 100,300,000 145,800,000 169,800,000 161,500,000 119,100,000 115,100,000 64,700,000 194,700,000 148,600,000 153,900,000 158,900,000 198,300,000 138,000,000 145,200,000 151,700,000 193,300,000 131,800,000 124,900,000 139,500,000 182,600,000 128,900,000 134,700,000 128,400,000 175,700,000 132,300,000 146,700,000 151,700,000 155,600,000 111,800,000 131,600,000 131,900,000 140,900,000 100,700,000 118,600,000 116,200,000 129,400,000 87,700,000 90,800,000 101,100,000 106,900,000 63,800,000 71,600,000 79,000,000 63,100,000 69,400,000 61,800,000 39,600,000 54,400,000 54,100,000 63,800,000 63,200,000 94,600,000 103,800,000 116,135,000 98,102,000 117,136,000 115,720,000 126,012,000 95,222,000 102,696,000 98,958,000 122,250,000 81,961,000 101,838,000 122,250 105,360,000 
        accounts receivable
      250,600,000 294,600,000 284,800,000 258,600,000 264,700,000 285,500,000 256,600,000 235,200,000 226,900,000 226,100,000 202,500,000 175,700,000 166,600,000 171,900,000 177,900,000 176,600,000 186,700,000 229,800,000 106,600,000 112,900,000 136,800,000 155,500,000 126,400,000 87,700,000 89,400,000 136,200,000 112,500,000 117,300,000 115,100,000 130,300,000 114,100,000 111,900,000 109,800,000 128,500,000 108,700,000 112,500,000 114,700,000 138,400,000 111,900,000 109,600,000 98,500,000 119,500,000 103,800,000 99,500,000 97,900,000 107,000,000 87,900,000 95,800,000 88,100,000 95,700,000 76,700,000 82,400,000 78,000,000 94,300,000 76,900,000 77,700,000 77,800,000 79,000,000 74,600,000 67,600,000 84,700,000 81,500,000 89,800,000 79,000,000 82,000,000 85,800,000 76,400,000 82,200,000 99,500,000 105,500,000 118,500,000 132,830,000 143,387,000 146,083,000 141,312,000 167,562,000 152,039,000 162,468,000 151,670,000 167,203,000 143,149,000 151,329,000 167,203 148,196,000 
        inventories
      2,116,400,000 2,135,800,000 2,318,900,000 1,942,200,000 1,822,400,000 1,978,800,000 2,030,800,000 2,066,000,000 1,862,900,000 1,768,300,000 1,242,100,000 1,199,200,000 1,081,400,000 959,200,000 822,200,000 783,200,000 701,100,000 718,400,000 413,800,000 560,200,000 769,600,000 875,200,000 828,700,000 636,400,000 1,059,700,000 985,000,000 1,030,100,000 1,100,800,000 1,167,800,000 1,067,600,000 962,800,000 967,400,000 912,800,000 826,000,000 843,500,000 930,400,000 969,100,000 894,900,000 892,400,000 989,500,000 997,900,000 917,200,000 887,600,000 928,500,000 870,500,000 886,000,000 784,600,000 793,100,000 772,300,000 767,700,000 734,500,000 712,500,000 703,900,000 648,500,000 588,400,000 595,200,000 583,900,000 519,500,000 457,100,000 482,900,000 566,600,000 517,200,000 498,300,000 499,700,000 426,300,000 529,300,000 556,500,000 666,600,000 696,800,000 756,800,000 803,000,000 769,992,000 745,428,000 808,235,000 780,491,000 775,313,000 715,458,000 779,817,000 776,679,000 709,791,000 623,444,000 800,479,000 709,791 761,557,000 
        assets held for sale
      44,800,000 268,900,000 71,200,000 245,200,000 409,900,000 174,400,000 162,800,000 206,600,000 242,700,000 342,200,000 15,800,000 27,500,000 44,900,000 29,100,000 204,200,000 60,600,000 198,200,000 375,100,000 15,800,000 31,600,000 31,500,000 28,300,000 49,600,000 28,700,000 28,700,000 154,200,000 26,100,000 19,500,000 55,300,000 26,300,000 28,300,000 28,300,000 28,300,000 30,300,000 16,200,000 18,300,000 18,300,000 16,100,000 94,300,000 35,000,000 35,000,000 27,600,000 46,600,000 57,300,000 53,900,000 6,400,000 7,500,000 7,500,000 11,700,000 9,100,000 9,200,000 9,200,000 9,100,000 27,600,000 27,400,000 3,000,000 6,700,000 2,800,000 5,400,000 3,200,000 18,900,000 20,000,000 28,400,000 30,300,000 64,200,000 31,500,000 64,300,000 50,400,000 24,100,000 27,100,000 25,900,000 34,075,000 20,228,000 18,976,000 22,359,000 25,947,000 12,451,000 19,677,000 49,310,000 51,498,000 60,538,000 16,065,000 51,498 33,553,000 
        other current assets
      416,700,000 400,900,000 426,400,000 412,400,000 355,100,000 351,700,000 381,100,000 422,500,000 332,000,000 388,900,000 368,300,000 346,600,000 298,800,000 288,100,000 298,400,000 257,500,000 225,500,000 203,700,000 183,400,000 179,700,000 182,100,000 183,800,000 170,100,000 110,600,000 122,100,000 129,000,000 128,900,000 128,400,000 120,600,000 122,200,000 125,500,000 130,700,000 119,200,000 119,300,000 117,700,000 129,200,000 103,900,000 97,000,000 93,700,000 97,200,000 94,600,000 88,400,000 96,100,000 100,100,000 95,400,000 108,600,000 79,900,000 79,600,000 76,000,000 80,400,000 75,200,000 70,200,000 66,000,000 69,500,000 69,000,000 69,600,000 66,700,000 63,300,000 51,800,000 51,900,000 51,300,000 52,600,000 55,000,000 51,500,000 46,000,000 61,500,000 53,500,000 54,200,000 60,300,000 64,800,000 70,200,000 73,745,000             
        total current assets
      3,043,700,000 3,380,200,000 3,336,000,000 3,129,600,000 3,247,100,000 3,137,900,000 3,104,500,000 3,218,300,000 2,922,400,000 3,057,100,000 2,054,900,000 2,003,900,000 2,050,200,000 1,909,800,000 1,812,600,000 1,601,500,000 1,813,900,000 1,929,400,000 1,150,500,000 1,132,500,000 1,317,600,000 1,405,700,000 1,298,000,000 1,591,700,000 1,753,200,000 1,602,600,000 1,448,000,000 1,529,500,000 1,628,600,000 1,553,000,000 1,375,500,000 1,386,000,000 1,326,600,000 1,302,100,000 1,220,700,000 1,318,000,000 1,348,600,000 1,332,400,000 1,337,100,000 1,379,500,000 1,369,300,000 1,343,000,000 1,282,000,000 1,344,800,000 1,284,300,000 1,276,700,000 1,091,200,000 1,123,500,000 1,095,600,000 1,108,600,000 1,010,800,000 1,071,700,000 984,200,000 986,400,000 864,900,000 855,200,000 852,100,000 792,500,000 670,200,000 710,300,000 819,000,000 768,600,000 778,200,000 815,600,000 700,600,000 821,300,000 851,400,000 1,019,700,000 979,400,000 1,095,600,000 1,159,500,000 1,192,422,000 1,138,020,000 1,223,762,000 1,237,668,000 1,293,064,000 1,188,168,000 1,230,970,000 1,217,844,000 1,185,180,000 1,009,519,000 1,174,008,000 1,185,180 1,143,506,000 
        investments
      414,400,000 414,700,000 412,500,000 385,500,000 358,900,000 334,200,000 321,800,000 337,600,000 334,700,000 326,700,000 291,800,000 287,300,000 280,800,000 235,000,000 173,500,000 105,300,000 115,400,000 123,500,000                                                                   
        property and equipment
      3,110,000,000 3,070,400,000 3,111,700,000 2,486,000,000 2,475,100,000 2,550,700,000 2,442,700,000 2,423,400,000 2,408,400,000 2,315,700,000 1,960,500,000 1,940,200,000 1,930,500,000 1,941,000,000 1,911,600,000 1,974,000,000 1,988,400,000 1,990,000,000 1,196,800,000 1,177,600,000 950,800,000 956,200,000 945,400,000 922,800,000 924,400,000 909,700,000 943,400,000 918,900,000 915,400,000 886,100,000 877,600,000 871,900,000 854,500,000 834,200,000 823,000,000 822,300,000 824,100,000 815,400,000 800,300,000 803,500,000 776,700,000 772,800,000 761,600,000 765,200,000 726,100,000 741,600,000 700,100,000 677,500,000 656,100,000 651,500,000 634,300,000 578,600,000 566,000,000 565,800,000 520,100,000 527,700,000 518,700,000 510,800,000 509,500,000 493,000,000 480,700,000 441,900,000 440,900,000 449,100,000 438,400,000 468,900,000 468,100,000 476,700,000 479,900,000 460,800,000 251,200,000 238,581,000 210,688,000 209,471,000 204,782,000 202,584,000 201,053,000 198,825,000 194,621,000 193,457,000 206,900,000 201,154,000 193,457 195,788,000 
        operating lease right-of-use assets
      231,200,000 240,600,000 249,600,000 211,200,000 218,000,000 220,100,000 222,400,000 228,600,000 230,100,000 241,800,000 230,600,000 233,600,000 239,700,000 235,400,000 240,900,000 246,100,000 252,400,000 261,000,000 215,900,000 213,000,000 310,500,000 317,400,000 286,900,000 90,200,000 62,100,000 65,600,000 77,100,000 78,900,000 73,400,000                                                        
        goodwill
      2,268,400,000 2,281,300,000 2,264,800,000 1,974,700,000 1,976,200,000 2,044,700,000 2,011,300,000 2,010,400,000 2,014,900,000 2,009,000,000 1,783,400,000 1,783,400,000 1,783,400,000 1,783,400,000 2,208,200,000 2,230,800,000 2,234,600,000 2,271,700,000 569,500,000 563,200,000 563,200,000 562,200,000 888,600,000 206,500,000 206,500,000 201,700,000 272,100,000 213,200,000 213,200,000 181,200,000 181,200,000 181,200,000 176,100,000 160,800,000 160,800,000 160,800,000 160,700,000 128,100,000 128,000,000 130,200,000 130,200,000 130,200,000 130,200,000 131,200,000 102,900,000 104,000,000 61,900,000 61,900,000 58,100,000 54,500,000 52,800,000 28,400,000 28,400,000 28,400,000 18,700,000 18,700,000 18,700,000 18,700,000 18,800,000 18,800,000 18,800,000        499,800,000 499,700,000 500,000,000 483,301,000 468,123,000 456,416,000 447,021,000 447,996,000 449,785,000 450,362,000 456,008,000 457,405,000 467,188,000 461,189,000 457,405 461,650,000 
        intangible franchise rights
      2,097,600,000 2,097,600,000 2,268,400,000 1,816,900,000 1,816,900,000 1,911,700,000 1,956,700,000 1,957,100,000 2,093,700,000 2,095,800,000 1,800,100,000 1,800,100,000 1,800,100,000 1,800,100,000 1,327,300,000 1,327,300,000 1,335,700,000 1,335,700,000 425,200,000 425,200,000 425,200,000 425,200,000 101,900,000 113,200,000 113,200,000 121,700,000 65,800,000 65,800,000 65,800,000 65,800,000 69,500,000 69,500,000 60,400,000 49,600,000 54,700,000 54,700,000 54,800,000 48,500,000 48,500,000 48,500,000 48,500,000 48,500,000                                           
        other long-term assets
      137,500,000 133,300,000 130,500,000 127,700,000 128,900,000 137,800,000 114,100,000 130,700,000 127,400,000 113,300,000 133,700,000 117,400,000 98,100,000 116,700,000 93,200,000 99,000,000 60,400,000 22,200,000 13,500,000 13,400,000 15,000,000 9,600,000 9,800,000 10,000,000 9,800,000 10,000,000 10,100,000 7,700,000 8,500,000 9,300,000 12,500,000 12,300,000 11,800,000 10,000,000 10,600,000 11,200,000 11,500,000 11,700,000 12,600,000 10,400,000 10,800,000 11,400,000 69,600,000 70,600,000 64,300,000 69,700,000 60,500,000 60,500,000 60,000,000 60,900,000 59,500,000 54,000,000 52,700,000 53,300,000 54,400,000 54,500,000 55,300,000 56,000,000 61,400,000 64,300,000 65,800,000 49,700,000 50,100,000 51,800,000 45,300,000 51,000,000 52,900,000 54,700,000 105,400,000 107,300,000 109,000,000 101,996,000 98,526,000 97,907,000 88,741,000 87,193,000 91,741,000 94,130,000 89,561,000 90,511,000 94,642,000 100,116,000 90,511 94,537,000 
        total assets
      11,302,800,000 11,618,200,000 11,773,500,000 10,131,600,000 10,221,000,000 10,337,000,000 10,173,600,000 10,306,000,000 10,131,500,000 10,159,400,000 8,255,000,000 8,165,900,000 8,182,800,000 8,021,400,000 7,816,300,000 7,638,800,000 7,860,100,000 8,002,600,000 3,571,400,000 3,524,900,000 3,582,300,000 3,676,300,000 3,530,600,000 2,934,400,000 3,069,200,000 2,911,300,000 2,816,500,000 2,814,000,000 2,904,900,000 2,695,400,000 2,516,300,000 2,520,900,000 2,429,400,000 2,356,700,000 2,269,800,000 2,367,000,000 2,399,700,000 2,336,100,000 2,326,500,000 2,372,100,000 2,335,500,000 2,305,900,000 2,243,400,000 2,311,800,000 2,177,600,000 2,192,000,000 1,925,500,000 1,935,900,000 1,883,100,000 1,888,600,000 1,775,500,000 1,755,300,000 1,657,600,000 1,661,400,000 1,490,200,000 1,490,400,000 1,482,600,000 1,419,400,000 1,308,900,000 1,338,200,000 1,441,500,000 1,338,700,000 1,346,600,000 1,400,900,000 1,271,600,000 1,426,300,000 1,472,300,000 1,654,300,000 2,064,500,000 2,163,400,000 2,019,700,000 2,016,300,000 1,915,357,000 1,987,556,000 1,978,212,000 2,030,837,000 1,930,747,000 1,974,287,000 1,963,756,000 1,930,800,000 1,782,181,000 1,938,975,000 1,930,800 1,897,959,000 
        liabilities and shareholders' equity
                                                                                          
        current liabilities:
                                                                                          
        floor plan notes payable—trade
      326,600,000 343,100,000 344,700,000 289,500,000 261,800,000 349,900,000 307,200,000 102,800,000 205,500,000 195,100,000 58,900,000 49,300,000 45,600,000 51,000,000 20,100,000 27,700,000 15,300,000 37,300,000 22,100,000 13,900,000 48,700,000 64,900,000 60,400,000 57,500,000 118,400,000 130,300,000 122,100,000 123,800,000 132,300,000 114,000,000 102,200,000 105,000,000 110,500,000 104,200,000 109,700,000 129,400,000 128,400,000 108,300,000 105,300,000 156,300,000 158,700,000 138,800,000 108,600,000 121,700,000 102,800,000 116,500,000 71,300,000 64,000,000 60,300,000 74,700,000 63,400,000 60,700,000 60,600,000 55,100,000 44,100,000 49,500,000 52,400,000 65,500,000 225,800,000 195,900,000 284,400,000 294,500,000 325,200,000 357,700,000 244,000,000 359,700,000 408,200,000 478,200,000 451,400,000                
        floor plan notes payable—non-trade
      1,337,400,000 1,683,900,000 1,777,300,000 999,100,000 1,201,600,000 1,344,800,000 1,178,800,000 1,317,300,000 1,484,900,000 1,590,600,000     8,100,000 16,700,000 383,300,000 527,200,000 116,100,000 227,600,000 478,100,000 637,300,000 635,200,000 468,700,000 730,100,000 657,700,000 738,900,000 794,900,000 903,000,000 852,100,000 728,900,000 767,600,000 684,600,000 627,900,000 578,600,000 691,300,000 683,200,000 673,500,000 664,200,000 727,300,000 655,000,000 573,400,000 729,300,000 723,500,000 674,800,000 650,300,000 485,800,000 546,700,000 513,800,000 534,800,000 506,700,000 436,800,000 463,400,000 501,600,000 419,400,000 460,200,000 433,700,000 368,500,000 68,800,000 75,500,000 85,100,000 57,300,000 59,500,000 77,000,000 66,400,000 96,400,000 82,600,000 134,600,000 111,800,000                
        current maturities of long-term debt
      456,200,000 479,200,000 106,700,000 80,900,000 113,400,000 114,700,000 83,400,000 113,100,000 84,400,000 84,900,000 85,900,000 59,200,000 83,100,000 84,500,000 63,800,000 69,600,000 62,600,000 62,500,000 43,300,000 43,200,000 36,400,000 36,600,000 49,700,000 51,400,000 47,400,000 32,400,000 38,100,000 38,400,000 38,700,000 38,800,000 13,100,000 13,100,000 13,000,000 12,900,000 14,300,000 14,200,000 14,100,000 14,000,000 13,900,000 14,600,000 14,500,000 13,900,000 13,800,000 12,700,000 10,900,000 28,700,000 13,500,000 11,400,000 11,400,000 11,100,000 8,500,000 5,000,000 4,900,000 4,600,000 2,800,000 16,800,000 17,900,000 19,500,000 26,300,000 17,000,000 8,900,000 21,500,000 9,000,000 9,000,000 8,200,000 8,600,000 8,700,000 58,800,000 48,900,000 18,900,000 2,100,000 1,736,000 26,001,000 27,225,000 24,841,000 23,144,000 26,263,000 26,257,000 24,687,000 24,522,000 24,407,000 28,241,000 24,522 33,880,000 
        current maturities of operating leases
      25,700,000 27,600,000 29,300,000 25,700,000 27,300,000 28,100,000 26,400,000 26,900,000 26,000,000 26,200,000 21,300,000 21,200,000 22,600,000 23,600,000 24,300,000 24,400,000 26,200,000 25,800,000 18,200,000 17,600,000 24,900,000 24,800,000 26,900,000 16,400,000 17,300,000 17,000,000 21,000,000 20,500,000 18,300,000                                                        
        accounts payable and accrued liabilities
      834,500,000 780,300,000 858,700,000 764,900,000 764,500,000 761,400,000 761,100,000 769,700,000 723,600,000 748,100,000 601,800,000 687,500,000 672,200,000 645,000,000 771,500,000 812,800,000 880,200,000 742,900,000 459,500,000 451,900,000 454,600,000 450,900,000 418,000,000 299,200,000 268,700,000 308,700,000 315,000,000 295,000,000 306,800,000 298,400,000 291,300,000 283,300,000 293,000,000 313,200,000 277,800,000 268,300,000 327,700,000 309,100,000 271,100,000 270,800,000 281,200,000 281,700,000 264,500,000 269,100,000 273,200,000 245,600,000 216,700,000 226,100,000 224,500,000 213,600,000 194,700,000 199,800,000 209,300,000 209,100,000 180,500,000 183,800,000 195,400,000 182,800,000 177,800,000 183,800,000 183,600,000 153,400,000 139,300,000 148,200,000 131,800,000 143,900,000 135,200,000 151,300,000 155,200,000 184,300,000 173,200,000 186,121,000             
        deferred revenue—current
      242,800,000 243,600,000 244,300,000 243,000,000 239,000,000 235,500,000 235,400,000 233,600,000 230,900,000 228,600,000 226,700,000 223,600,000 221,800,000 218,900,000 205,900,000 201,200,000 196,400,000 181,500,000                                                                   
        liabilities associated with assets held for sale
       1,800,000    1,900,000 2,000,000 2,000,000 2,100,000 2,100,000  8,800,000 23,100,000 10,500,000 65,000,000 4,500,000 20,800,000 20,800,000  5,100,000 6,000,000 8,900,000 22,500,000   100,900,000   17,700,000          45,300,000 4,900,000 5,000,000  30,400,000 29,600,000 27,100,000         9,400,000 8,600,000  3,100,000  1,700,000  5,300,000  1,500,000 6,900,000 27,700,000 17,900,000 40,900,000 31,600,000 8,000,000 13,200,000 1,800,000 9,859,000 1,377,000   3,887,000  5,659,000 23,590,000 26,847,000 32,891,000 5,087,000 26,847 22,158,000 
        total current liabilities
      3,223,100,000 3,559,500,000 3,360,900,000 2,403,100,000 2,607,600,000 2,836,300,000 2,594,200,000 2,565,500,000 2,757,400,000 2,875,700,000 994,500,000 1,049,600,000 1,068,300,000 1,033,400,000 1,158,700,000 1,156,900,000 1,584,800,000 1,598,000,000 659,200,000 759,300,000 1,048,700,000 1,223,400,000 1,212,700,000 893,200,000 1,181,900,000 1,247,000,000 1,235,100,000 1,272,600,000 1,416,800,000 1,303,300,000 1,135,500,000 1,169,000,000 1,101,100,000 1,058,200,000 980,400,000 1,103,200,000 1,153,400,000 1,104,900,000 1,099,800,000 1,173,900,000 1,114,400,000 1,007,800,000 1,146,600,000 1,156,600,000 1,088,800,000 1,041,100,000 787,300,000 848,200,000 810,000,000 834,200,000 773,300,000 702,300,000 738,200,000 779,800,000 655,400,000 710,300,000 702,500,000 636,300,000 500,400,000 472,200,000 567,300,000 526,700,000 534,500,000 598,800,000 478,100,000 626,500,000 675,600,000 854,500,000 775,300,000 876,100,000 867,100,000 871,667,000 776,251,000 848,263,000 849,927,000 881,055,000 798,003,000 841,092,000 850,864,000 838,226,000 714,062,000 889,628,000 838,226 847,510,000 
        long-term debt
      3,069,500,000 3,092,800,000 3,498,600,000 2,964,100,000 3,015,100,000 3,023,900,000 3,299,500,000 3,488,200,000 3,108,100,000 3,121,200,000 3,136,500,000 3,181,300,000 3,194,800,000 3,216,800,000 3,261,800,000 3,315,500,000 3,340,700,000 3,520,100,000 1,327,700,000 1,335,000,000 1,157,700,000 1,165,200,000 1,174,100,000 1,182,100,000 1,117,500,000 907,000,000 867,800,000 871,200,000 874,700,000 866,500,000 852,100,000 855,600,000 859,100,000 862,600,000 901,400,000 905,200,000 908,900,000 912,700,000 916,300,000 927,900,000 931,700,000 940,400,000 747,900,000 758,200,000 679,800,000 678,700,000 592,100,000 537,500,000 540,400,000 543,300,000 511,300,000 580,800,000 472,400,000 461,400,000 431,900,000 399,300,000 415,000,000 439,100,000 468,800,000 526,800,000 537,000,000 513,400,000 527,300,000 528,800,000 520,600,000 538,900,000 540,500,000 548,300,000 608,500,000 608,900,000 473,300,000 473,851,000 465,671,000 465,782,000 477,880,000 454,010,000 456,283,000 470,743,000 471,109,000 472,427,000 473,818,000 476,251,000 472,427 495,272,000 
        long-term lease liability
      213,800,000 221,600,000 228,900,000 193,700,000 198,800,000 200,000,000 204,000,000 209,300,000 211,100,000 222,100,000 215,800,000 218,700,000 224,200,000 218,400,000    242,000,000    296,700,000    52,600,000                                                           
        deferred revenue
      598,000,000 584,600,000 567,800,000 553,100,000 529,300,000 530,500,000 528,400,000 525,800,000 516,300,000 508,100,000 500,200,000 490,500,000 491,900,000 495,000,000 477,800,000 476,000,000 466,900,000 466,300,000                                                                   
        deferred income taxes
      209,900,000 210,600,000 182,700,000 183,400,000 185,200,000 187,700,000 132,600,000 137,700,000 138,200,000 136,400,000 103,600,000 101,700,000 99,300,000      35,300,000 34,600,000 36,200,000 34,600,000 24,700,000 24,700,000 24,900,000 26,000,000 20,400,000 20,700,000 21,300,000 21,700,000 17,400,000 16,600,000 16,300,000 12,500,000 9,100,000 9,000,000 9,200,000 8,900,000 12,200,000 11,700,000 10,500,000 11,800,000 11,700,000 10,800,000 13,800,000 10,200,000 8,400,000 8,900,000 9,500,000 9,400,000 13,200,000 11,800,000 10,900,000 10,900,000 9,600,000 10,200,000 11,600,000 9,600,000 9,300,000 9,900,000 10,600,000 7,200,000 7,900,000 8,600,000 8,800,000 8,900,000 10,900,000 10,900,000 14,100,000 12,000,000 12,400,000 12,291,000 13,961,000 13,961,000 13,961,000 13,961,000 19,825,000 19,825,000 19,825,000 19,825,000 15,570,000 15,576,000 19,825 15,576,000 
        other long-term liabilities
      56,400,000 57,100,000 56,600,000 57,200,000 61,500,000 56,400,000 52,700,000 48,800,000 53,500,000 51,700,000 56,000,000 55,600,000 55,100,000 53,500,000 52,100,000 52,100,000 51,900,000 60,700,000 45,600,000 47,900,000 50,900,000 50,900,000 43,600,000 43,700,000 35,300,000 32,400,000 32,900,000 30,600,000 28,100,000 30,700,000 30,300,000 29,200,000 28,600,000 29,200,000 31,600,000 31,500,000 30,000,000 29,900,000 36,100,000 37,000,000 35,400,000 29,500,000 29,900,000 25,100,000 25,200,000 23,400,000 22,200,000 21,400,000 21,000,000 20,500,000 20,000,000 18,600,000 18,000,000 17,400,000 17,500,000 17,600,000 17,100,000 17,400,000 26,300,000 28,000,000 29,400,000 32,900,000 32,300,000 29,700,000 31,900,000 27,600,000 29,700,000 28,800,000 26,500,000 25,500,000 36,900,000 34,816,000 34,776,000 35,803,000 35,345,000 29,948,000 30,090,000 30,419,000 30,427,000 28,094,000 28,668,000 37,971,000 28,094 35,821,000 
        commitments and contingencies
                                                                                          
        shareholders' equity:
                                                                                          
        preferred stock, .01 par value...
                                                                                          
        common stock, .01 par value...
      400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 363,000    351,000    344,000   344 342,000 
        additional paid-in capital
      1,330,500,000 1,327,600,000 1,323,700,000 1,320,400,000 1,314,200,000 1,305,100,000 1,299,700,000 1,299,500,000 1,296,100,000 1,288,400,000 1,287,200,000 1,282,000,000 1,288,000,000 1,281,400,000 1,283,400,000 1,278,800,000 1,274,100,000 1,278,600,000 607,700,000 603,900,000 600,200,000 595,500,000 592,100,000 589,500,000 586,400,000 582,900,000 580,800,000 577,800,000 575,500,000 572,900,000 571,700,000 569,200,000 566,700,000 563,500,000 559,800,000 556,400,000 553,100,000 549,400,000 546,600,000 543,500,000 541,100,000 537,200,000 534,900,000 532,400,000 529,100,000 522,600,000 520,500,000 518,100,000 515,400,000 510,500,000 508,500,000 505,700,000 503,600,000 499,000,000 497,500,000 490,400,000 488,400,000 482,600,000 475,400,000 470,400,000 467,400,000 460,700,000 459,400,000 457,300,000 455,500,000 453,800,000 454,300,000 442,400,000 441,700,000 442,100,000 441,900,000 440,434,000 439,193,000 437,385,000 431,648,000 431,725,000 427,535,000 423,795,000 421,701,000 417,055,000 416,494,000 413,398,000 417,055 413,094,000 
        retained earnings
      3,665,200,000 3,616,200,000 3,603,500,000 3,503,700,000 3,351,000,000 3,218,900,000 3,090,900,000 3,048,700,000 3,061,500,000 2,961,500,000 2,950,400,000 2,781,100,000 2,763,300,000 2,610,100,000 2,338,200,000 2,133,300,000 1,931,900,000 1,881,300,000 1,740,800,000 1,593,800,000 1,441,700,000 1,348,900,000 1,259,800,000 1,163,600,000 1,114,000,000 1,094,500,000 1,050,900,000 1,009,300,000 957,700,000 922,700,000 887,100,000 842,800,000 799,500,000 750,300,000 707,800,000 677,100,000 645,000,000 611,500,000 544,400,000 512,000,000 475,300,000 444,300,000 403,200,000 352,100,000 311,000,000 275,100,000 263,300,000 230,800,000 194,900,000 163,500,000 136,600,000 113,900,000 86,900,000 54,400,000 31,600,000 10,900,000             225,400,000 226,500,000 222,600,000 219,356,000 215,558,000 203,979,000 190,118,000 196,393,000 191,073,000 180,543,000 161,539,000 148,986,000 128,484,000 97,545,000 148,986 87,905,000 
        treasury stock
      -1,102,600,000 -1,092,800,000 -1,092,000,000 -1,091,800,000 -1,091,700,000 -1,079,200,000 -1,079,100,000 -1,082,500,000 -1,077,500,000 -1,067,300,000 -1,066,600,000 -1,066,400,000 -1,064,300,000 -1,063,000,000 -1,053,300,000 -1,053,100,000 -1,053,000,000 -1,044,100,000 -1,043,900,000 -1,043,900,000 -1,043,300,000 -1,033,700,000 -1,033,700,000 -1,033,700,000 -1,033,600,000 -1,028,600,000 -1,028,600,000 -1,028,400,000 -1,028,100,000 -1,023,400,000 -980,900,000 -963,900,000 -943,500,000 -919,100,000 -918,900,000 -913,800,000 -898,600,000 -879,500,000 -829,400,000 -829,300,000 -769,000,000 -663,900,000 -619,400,000 -515,100,000 -459,900,000 -351,700,000 -259,500,000 -219,600,000 -198,700,000 -184,000,000 -174,300,000 -166,100,000 -161,000,000 -149,400,000 -141,800,000 -135,400,000 -126,900,000 -124,100,000 -108,400,000 -92,700,000 -79,100,000 -74,900,000 -74,700,000 -74,600,000 -74,600,000 -74,600,000 -74,500,000 -74,500,000 -74,500,000 -74,500,000 -74,300,000 -73,319,000 -65,770,000 -52,338,000           
        accumulated other comprehensive income
      38,500,000 40,600,000 42,300,000 44,300,000 49,600,000 56,800,000 50,500,000 64,700,000 66,400,000 61,100,000 77,200,000 71,400,000  74,400,000             -3,500,000 -2,800,000 -900,000  2,700,000 2,000,000 1,200,000             -1,500,000 -800,000 -900,000 -300,000 200,000                                   
        total shareholders' equity
      3,932,100,000 3,891,900,000 3,878,000,000 3,777,000,000 3,623,500,000 3,502,100,000 3,362,400,000 3,330,700,000 3,346,900,000 3,244,100,000 3,248,500,000 3,068,600,000 3,049,200,000 2,903,500,000 2,642,900,000 2,410,400,000 2,182,500,000 2,115,500,000 1,301,300,000 1,148,300,000 998,000,000 905,500,000 811,900,000 713,100,000 660,900,000 646,300,000 600,000,000 556,300,000 504,600,000 473,200,000 481,000,000 450,500,000 424,300,000 394,200,000 347,300,000 318,100,000 298,200,000 279,700,000 255,600,000                                              
        total liabilities and shareholders' equity
      11,302,800,000 11,618,200,000 11,773,500,000 10,131,600,000 10,221,000,000 10,337,000,000 10,173,600,000 10,306,000,000 10,131,500,000 10,159,400,000 8,255,000,000 8,165,900,000 8,182,800,000 8,021,400,000 7,816,300,000 7,638,800,000 7,860,100,000 8,002,600,000 3,571,400,000 3,524,900,000 3,582,300,000 3,676,300,000 3,530,600,000 2,934,400,000 3,069,200,000 2,911,300,000 2,816,500,000 2,814,000,000 2,904,900,000 2,695,400,000 2,516,300,000 2,520,900,000 2,429,400,000 2,356,700,000 2,269,800,000 2,367,000,000 2,399,700,000 2,336,100,000 2,326,500,000                                              
        short term investments
       500,000        6,200,000    5,400,000    11,000,000                                                                   
        accumulated other comprehensive gain
                  61,800,000  74,100,000 51,000,000 29,100,000                                                                    
        deferred income taxes, net of current portion
                    49,000,000 54,800,000 59,300,000 69,100,000                             11,800,000 12,500,000 13,300,000 13,100,000 18,100,000 22,600,000 26,300,000 27,500,000 32,100,000 34,300,000 37,800,000 41,400,000 49,000,000 51,800,000 57,200,000 78,500,000 77,400,000 84,400,000 87,300,000 85,100,000 99,900,000 103,200,000                 
        operating lease liabilities
                    223,000,000 227,900,000 233,300,000  202,300,000 199,800,000 290,800,000  263,600,000 77,600,000 48,700,000  60,300,000 62,600,000 59,400,000                                                        
        accumulated other comprehensive loss
                       -700,000 -3,700,000 -5,900,000 -1,000,000 -5,600,000 -6,700,000 -6,700,000 -6,300,000 -2,900,000    600,000    -900,000 -1,800,000 -2,000,000 -1,700,000 -2,100,000 -6,400,000 -7,000,000 -6,000,000 -3,500,000 -4,600,000 -2,100,000 -2,100,000      -300,000 -300,000 -900,000 -1,600,000 -2,300,000 -3,100,000 -3,700,000 -4,500,000 -4,700,000 -5,300,000 -5,100,000 -6,900,000 -6,200,000 -5,700,000 -6,300,000 -4,900,000 -6,800,000 -5,600,000 -2,100,000 -2,100,000 -3,500,000 -2,609,000 -2,158,000 -1,460,000           
        liabilities and shareholders’ equity
                                                                                          
        shareholders’ equity:
                                                                                          
        total shareholders’ equity
                                             219,600,000 241,800,000 314,500,000 314,500,000 367,700,000 378,500,000 444,900,000 523,900,000 528,800,000 511,700,000 490,600,000 470,900,000 453,600,000 429,000,000 402,800,000 385,400,000 363,200,000 348,000,000 326,600,000 313,400,000 311,200,000 307,800,000 265,700,000 252,500,000 243,600,000  233,300,000 226,500,000 222,700,000 590,900,000 592,400,000 587,100,000 584,225,000 587,186,000 587,928,000 569,358,000 611,833,000 602,316,000 587,630,000 566,282,000 547,766,000 525,642,000 493,607,000 547,766 480,023,000 
        total liabilities and shareholders’ equity
                                             2,372,100,000 2,335,500,000 2,305,900,000 2,243,400,000 2,311,800,000 2,177,600,000 2,192,000,000 1,925,500,000 1,935,900,000 1,883,100,000 1,888,600,000 1,775,500,000 1,755,300,000 1,657,600,000 1,661,400,000 1,490,200,000 1,490,400,000 1,482,600,000 1,419,400,000 1,308,900,000 1,338,200,000 1,441,500,000 1,338,700,000 1,346,600,000 1,400,900,000  1,426,300,000 1,472,300,000 1,654,300,000 2,064,500,000 2,163,400,000 2,019,700,000 2,016,300,000 1,915,357,000 1,987,556,000 1,978,212,000 2,030,837,000 1,930,747,000 1,974,287,000 1,963,756,000 1,930,800,000 1,782,181,000 1,938,975,000 1,930,800 1,897,959,000 
        accumulated deficit
                                                              -10,200,000 -27,800,000 -49,300,000 -61,600,000 -75,800,000 -113,600,000 -126,400,000 -133,800,000 -134,000,000 -141,400,000 -146,900,000                  
        liabilities and stockholders’ equity
                                                                                          
        stockholders’ equity:
                                                                                          
        total stockholders’ equity
                                                                      241,000,000                    
        total liabilities and stockholders’ equity
                                                                      1,271,600,000                    
        restricted cash
                                                                       8,000,000                   
        (accumulated deficit) retained earnings
                                                                         -140,000,000                 
        floor plan notes payable—manufacturer affiliated
                                                                           188,900,000 178,500,000 193,748,000 183,329,000 198,333,000 225,676,000 319,896,000 293,928,000 331,025,000 298,581,000 204,044,000   204,044  
        floor plan notes payable—non-manufacturer affiliated
                                                                           470,800,000 511,500,000 480,203,000 433,858,000 468,976,000 445,762,000 380,881,000 319,446,000 326,303,000 348,211,000 410,338,000   410,338  
        prepaid and other current assets
                                                                              76,120,000 70,691,000 69,328,000 55,099,000 59,698,000 57,390,000 61,528,000 56,506,000 57,950,000 47,669,000 56,506 49,526,000 
        accounts payable
                                                                              48,822,000 63,176,000 67,149,000 63,951,000 64,610,000 65,620,000 70,820,000 72,432,000 54,191,000 77,097,000 72,432 53,078,000 
        accrued liabilities
                                                                              82,864,000 90,553,000 86,499,000 89,296,000 93,756,000 86,228,000 84,975,000 100,043,000 103,635,000 88,884,000 100,043 87,446,000 
        preferred stock, .01 par value per share...
                                                                                          
        common stock, .01 par value per share...
                                                                              363,000 362,000 352,000  349,000 347,000 349,000  344,000 342,000   
        restricted investments
                                                                                     913,000 909,000 1,799,000 913 1,645,000 
        restricted investments, net of current portion
                                                                                    5,722,000 4,247,000 3,932,000 2,508,000 4,247 2,478,000 
        floor plan notes payable – manufacturer affiliated
                                                                                      135,834,000    
        floor plan notes payable – non-manufacturer affiliated
                                                                                      363,104,000    
        floor plan notes payable
                                                                                       690,319,000  650,948,000 
      Cashflow Statements:
      Quarterly
      Annual
        Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-12-31 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 2010-06-30 2010-03-31 2009-12-31 2009-09-30 2009-06-30 2009-03-31 2008-12-31 2008-09-30 2008-06-30 2008-03-31 2007-12-31 2007-09-30 2007-06-30 2007-03-31 2006-12-31 2006-09-30 2006-06-30 2006-03-31 2005-12-31 2005-03-31 
                                                                                         
          cash flow from operating activities:
                                                                                         
          net income
        187,800,000 60,000,000 147,100,000 152,800,000 132,100,000 128,800,000 126,300,000 28,100,000 147,100,000 55,500,000 169,300,000 196,300,000 181,400,000 353,200,000 205,000,000 201,400,000 237,700,000 140,500,000 147,000,000 152,100,000 92,800,000 89,100,000 96,200,000 49,600,000 19,500,000 43,600,000 45,000,000 54,900,000 40,900,000 40,400,000 44,300,000 43,200,000 40,100,000 42,500,000 30,700,000 31,900,000 34,000,000 67,100,000 32,400,000 36,700,000 31,000,000 41,100,000 51,100,000 41,100,000 35,900,000 11,800,000 32,500,000 35,900,000 31,400,000 26,900,000 22,700,000 27,000,000 32,500,000 22,800,000 20,700,000 21,100,000 17,600,000 21,500,000 12,300,000 14,200,000 19,900,000 12,800,000 7,400,000 200,000 7,400,000 5,500,000 300,000 -365,400,000 6,000,000 10,900,000 10,500,000 10,953,000 19,010,000 20,559,000 433,000 12,013,000 17,179,000 19,004,000 12,553,000 20,502,000 9,640,000 
          adjustments to reconcile net income to net cash from operating activities—
                                                                                         
          depreciation and amortization
        22,600,000 23,000,000 21,200,000 19,000,000 19,200,000 19,200,000 18,900,000 18,200,000 18,700,000 17,100,000 17,100,000 16,800,000 16,700,000 15,400,000 17,100,000 18,100,000 18,400,000 11,300,000 10,700,000 10,100,000 9,800,000 9,500,000 9,800,000 9,700,000 9,500,000 9,500,000 9,100,000 9,000,000 8,600,000 8,500,000 8,500,000 8,500,000 8,200,000 8,100,000 8,100,000 8,000,000 7,900,000 7,700,000 7,800,000 7,700,000 7,500,000 7,500,000 7,500,000 7,200,000 7,300,000 7,000,000 6,700,000 6,400,000 6,300,000 6,300,000 6,200,000 5,900,000 5,900,000 5,700,000 5,400,000 5,800,000 5,700,000 5,800,000 5,800,000 5,800,000 5,300,000 5,600,000 5,700,000 6,200,000 5,300,000 5,900,000 6,100,000 5,700,000 6,500,000 5,700,000 5,500,000 5,431,000 5,385,000 5,348,000 5,328,000 5,045,000 5,076,000 5,113,000 4,975,000 5,299,000 5,250,000 
          share-based compensation
        11,100,000 6,400,000 6,000,000 6,200,000 9,100,000 5,500,000 5,000,000 5,700,000 10,500,000 4,200,000 5,200,000 5,500,000 8,600,000 4,200,000 4,700,000 4,700,000 7,000,000 4,000,000 3,900,000 3,600,000 4,700,000 3,400,000 2,600,000 3,100,000 3,500,000 2,100,000 3,600,000 2,900,000 3,900,000    3,200,000 3,600,000                                      1,236,000 1,192,000         
          asset impairments
         115,000,000 11,700,000 14,300,000 14,100,000                                                                           
          loaner vehicle amortization
        17,400,000 17,300,000 15,500,000 11,300,000 12,700,000 11,400,000 11,900,000 12,100,000 11,800,000 11,000,000 10,400,000 6,700,000 6,700,000 5,000,000 3,900,000 2,600,000 3,200,000 3,200,000 5,200,000 5,800,000 6,700,000 6,300,000 4,700,000 5,000,000 5,800,000 6,000,000 5,800,000 6,000,000 5,800,000 5,800,000 5,500,000 5,400,000 5,800,000 5,600,000 5,500,000 5,400,000 5,900,000 5,900,000 5,300,000 5,200,000 5,100,000 6,000,000 4,400,000 4,300,000 4,300,000 4,100,000 3,600,000 3,200,000 3,100,000 2,800,000 2,600,000 2,200,000 2,500,000 2,600,000 2,400,000 2,300,000 2,000,000 2,200,000 1,900,000 2,100,000 2,000,000 1,600,000 1,600,000 1,500,000 1,700,000 2,000,000 2,200,000 3,100,000 1,300,000 2,100,000 2,000,000           
          gain on divestitures
        -125,800,000 -34,400,000 -35,700,000 -6,000,000 -4,100,000 -5,000,000     -202,700,000 28,700,000 -33,100,000    -3,900,000 -24,700,000 -33,700,000                 -13,500,000                                        
          change in right-of-use assets
        8,000,000      7,100,000 6,900,000 7,400,000  8,100,000 6,100,000 6,300,000  5,100,000 6,500,000 7,300,000  4,600,000                                                               
          other adjustments
        1,300,000 2,100,000 -200,000 4,100,000 -900,000 -2,100,000 3,300,000 1,000,000 5,100,000 -200,000 -3,200,000 700,000 800,000 2,600,000 1,500,000 500,000 -900,000 600,000 -300,000 -200,000 -100,000 900,000 300,000 200,000 800,000 1,100,000 -300,000 3,200,000 1,200,000 300,000 600,000 1,000,000 2,000,000 400,000 900,000 1,000,000 1,600,000 -600,000 800,000 2,300,000 1,900,000 1,000,000 500,000 800,000 700,000 400,000 400,000 300,000 100,000 500,000 1,000,000 1,400,000 1,400,000 2,700,000 2,800,000 1,800,000 -600,000 1,600,000 2,100,000 1,600,000 3,500,000 3,900,000 400,000 6,100,000 1,700,000 900,000 1,600,000 2,000,000 2,500,000 2,000,000 -1,220,000 3,235,000 3,945,000 3,284,000 7,019,000 1,181,000 2,861,000 1,361,000 1,591,000 1,315,000 
          changes in operating assets and liabilities, net of acquisitions and divestitures—
                                                                                         
          contracts-in-transit
        51,300,000 -37,600,000 12,100,000 50,200,000 -100,000 -59,900,000 6,300,000 11,800,000 57,700,000 -102,500,000 -10,000,000 -10,900,000 64,500,000 -60,300,000 52,200,000 -7,100,000 -1,800,000 -12,700,000 45,500,000 24,000,000 -8,300,000 -42,400,000 -4,000,000 -50,400,000 130,000,000 -46,100,000 5,300,000 5,000,000 39,400,000 -60,300,000 7,200,000 6,500,000 41,600,000 -61,500,000 -6,900,000 14,600,000 43,100,000 -53,700,000 5,800,000 -6,300,000 47,300,000 -43,400,000 14,400,000 5,000,000 3,900,000 -43,800,000 19,800,000 300,000 9,000,000 -40,200,000 17,900,000 -2,400,000 13,200,000 -41,700,000 3,100,000 10,300,000 5,800,000 -43,100,000 7,800,000 7,400,000 1,600,000 6,300,000 -7,600,000 -22,200,000 14,800,000 -300,000 9,700,000 -600,000 31,400,000 9,200,000 12,300,000 -18,033,000 19,034,000 -1,416,000 10,292,000  7,474,000 -3,738,000 23,292,000  3,522,000 
          accounts receivable
        43,700,000 -9,800,000 -26,200,000 5,700,000 21,000,000 -29,000,000 -21,500,000 -8,400,000 -1,100,000 -23,400,000 -27,900,000 -8,500,000 5,200,000 3,600,000 -1,200,000 9,500,000 35,700,000 -13,300,000 6,300,000 23,800,000 18,500,000 -29,300,000 -38,400,000 1,900,000 46,700,000 -23,600,000 4,700,000 -2,200,000 15,100,000 -16,300,000 -2,000,000 -1,900,000 18,700,000 -19,800,000 3,700,000 2,200,000 24,100,000 -27,000,000 -2,600,000 -11,000,000 21,100,000 -15,600,000 -3,200,000 -1,700,000 9,300,000 -19,100,000 7,800,000 -8,400,000 5,700,000 -21,600,000 2,200,000 -7,900,000 12,400,000 -21,000,000 -3,900,000 -4,600,000 -3,800,000 -9,500,000 -12,700,000 11,500,000 11,700,000 3,400,000 -17,500,000 -2,800,000 -1,600,000 -14,900,000 700,000 12,300,000 1,300,000 7,800,000 9,300,000 5,684,000 -2,150,000 -9,902,000 20,786,000    9,839,000   
          inventories
        26,500,000 71,000,000 3,700,000 -127,800,000 125,800,000 41,900,000 34,900,000 -322,500,000 15,500,000 -174,400,000 74,600,000 -11,400,000 -33,300,000 -43,900,000 -3,400,000 -16,100,000 70,300,000 49,900,000 196,000,000 268,100,000 156,500,000 7,500,000 -43,000,000 455,600,000 7,900,000 11,100,000 118,600,000 102,000,000 -19,600,000 -50,800,000 52,200,000 8,600,000 -34,400,000 62,000,000 130,200,000 75,500,000 -16,200,000 27,200,000 95,300,000 35,500,000 -52,700,000 -5,100,000 43,600,000 -15,700,000 27,300,000 -36,800,000 31,400,000 3,400,000 12,600,000 -17,600,000 5,400,000 5,700,000 -39,600,000 -38,900,000 15,200,000 1,900,000 -54,600,000 -52,400,000 31,200,000 92,500,000 -15,000,000 -8,400,000 7,500,000 -60,500,000 109,000,000 51,700,000 106,600,000 20,100,000 71,700,000 54,300,000 -8,700,000 -16,876,000 83,643,000 -7,606,000 609,000     -76,135,000  
          other current assets
        -34,000,000 -7,800,000 30,900,000 -68,500,000 -21,600,000 18,400,000 20,500,000 21,200,000 -75,400,000 -149,000,000 -148,600,000 -157,500,000 -109,500,000 -68,000,000 -96,000,000 -107,200,000 -82,500,000 -49,900,000 -55,500,000 -62,400,000 -59,300,000 -72,600,000 -48,800,000 -25,600,000 -36,300,000 -42,600,000 -40,600,000 -49,200,000 -41,300,000 -56,300,000 -47,700,000 -64,300,000 -32,500,000 -51,600,000 -37,300,000 -66,500,000 -41,800,000 -41,200,000 -37,100,000 -34,800,000 -39,100,000 -27,600,000 -33,800,000 -33,800,000 -23,200,000 -48,000,000 -26,700,000 -23,300,000 -12,700,000 -23,400,000 -23,800,000 -20,200,000 -21,100,000 -15,200,000 -12,900,000 -17,500,000 -19,900,000 -12,600,000 -7,300,000 -10,900,000 -5,800,000 -7,800,000 -12,900,000 -14,700,000 11,800,000 -30,300,000 -11,100,000 -4,500,000 -10,300,000 -21,200,000 -7,600,000           
          floor plan notes payable—trade
        -16,500,000 -1,600,000 51,700,000 31,200,000 -88,100,000 42,700,000 204,400,000 -102,700,000 10,400,000 136,200,000 9,600,000 3,700,000 -5,400,000 29,000,000 -5,600,000 12,400,000 -22,000,000 15,100,000 8,300,000 -34,800,000 -16,200,000 3,800,000 8,700,000 -60,800,000 -16,200,000 30,100,000 12,800,000 -8,500,000 3,800,000 11,800,000 -2,800,000 -5,500,000 6,300,000 -5,500,000 -19,700,000 1,000,000 20,100,000 3,200,000 -37,900,000 -2,400,000 19,900,000 30,200,000 -13,100,000 7,800,000 -13,700,000 6,000,000 7,300,000 3,700,000 -14,400,000 11,300,000 2,700,000 100,000 5,500,000 11,000,000 -5,400,000 -2,900,000 -13,100,000 -160,200,000 31,600,000 -89,700,000 -51,100,000 -32,200,000 -32,000,000 110,000,000 -112,500,000 -56,500,000 -65,000,000 47,300,000              
          deferred revenue
        12,600,000 16,100,000 16,000,000 27,800,000 2,300,000 2,200,000 4,400,000 12,200,000 10,500,000 9,800,000 12,800,000 400,000 -200,000 7,000,000 6,500,000 13,900,000 15,500,000                                                                 
          accounts payable and accrued liabilities
        29,000,000 -92,800,000 59,600,000 -4,000,000 1,200,000 2,800,000 -4,300,000 45,300,000 -31,000,000 143,600,000 -88,200,000 30,300,000 33,800,000 -132,200,000 -20,100,000 -80,500,000 163,000,000             9,400,000 7,200,000 -11,300,000 -21,500,000 31,700,000 5,800,000 -57,000,000 16,900,000 42,400,000 3,600,000 -10,100,000 -4,500,000 18,400,000 -9,300,000 28,600,000 -5,300,000 -9,900,000 1,600,000 11,000,000 16,900,000 -5,200,000 -9,500,000 3,800,000 28,400,000 600,000 -11,600,000 12,100,000 1,000,000 -6,000,000 -400,000 13,300,000 14,000,000 -9,200,000 16,500,000 -12,700,000 7,900,000 -16,300,000 -4,200,000 -30,900,000 12,000,000 -12,100,000 33,049,000 -22,488,000 622,000 498,000     23,395,000 25,495,000 
          operating lease liabilities
        -7,800,000 -8,100,000 -7,900,000 -7,000,000 -7,200,000 -7,100,000 -6,800,000 -6,500,000 -6,800,000 -6,000,000 -7,800,000 -7,000,000 -5,900,000 -6,100,000 -4,800,000 -7,500,000 -7,000,000 -4,900,000 -4,500,000 -5,000,000 -6,200,000 -7,900,000 -3,500,000 -4,200,000 -5,300,000 -5,200,000 -5,000,000 -4,900,000 -4,600,000                                                     
          other long-term assets and liabilities
        -4,100,000 -3,300,000 -6,700,000 -10,800,000 2,100,000 -4,700,000 -1,000,000 -8,300,000 -3,100,000 -9,500,000 -4,700,000 -6,900,000 2,300,000 -31,800,000 400,000 1,100,000 -6,000,000 -9,200,000 500,000 -5,300,000 800,000 9,300,000 300,000 7,800,000 -200,000 -100,000 1,800,000 300,000 900,000 -400,000 1,500,000 1,000,000 -700,000 -1,800,000 900,000 600,000 100,000 400,000 900,000 -200,000 800,000 500,000 1,800,000 1,200,000 700,000 1,100,000 -1,000,000 100,000 300,000 1,400,000 700,000 700,000 -300,000   -300,000 1,100,000 -100,000 -800,000 3,100,000 -1,200,000 1,500,000 1,500,000 -1,000,000 600,000 1,000,000 -1,800,000 3,100,000 2,700,000 -2,800,000 1,185,000 -569,000 -465,000 69,000 -336,000 1,342,000 913,000 3,137,000   
          net cash from operating activities
        223,200,000 151,900,000 306,900,000 91,400,000 225,000,000 244,200,000 404,300,000 -154,400,000 177,100,000 73,200,000 18,100,000 50,000,000 171,700,000 31,600,000 167,800,000 87,600,000 409,000,000 205,100,000 371,300,000 376,500,000 210,800,000 27,300,000 70,600,000 426,900,000 127,700,000 2,100,000 187,200,000 95,300,000 65,200,000 -96,300,000 77,300,000 -6,700,000 35,800,000 23,100,000 124,900,000 20,000,000 98,300,000 -8,800,000 81,500,000 24,600,000 45,000,000 10,400,000 55,800,000 9,100,000 80,100,000 -74,400,000 77,900,000 26,100,000 54,600,000 -24,300,000 50,300,000 16,300,000 8,400,000 -37,300,000 34,500,000 18,200,000 -36,100,000 -251,500,000 77,200,000 42,800,000 -49,600,000 4,600,000 -41,700,000 51,200,000 30,600,000 -13,000,000 42,100,000 70,600,000 352,500,000 106,400,000 -300,000 29,727,000 87,698,000     31,999,000 73,686,000   
          cash flow from investing activities:
                                                                                         
          capital expenditures—excluding real estate
        -46,400,000 -81,600,000 -44,900,000 -38,100,000 -21,400,000 -58,100,000 -39,100,000 -39,700,000 -25,700,000 -65,800,000 -35,700,000 -25,600,000 -15,200,000 -32,100,000 -23,000,000 -18,700,000 -20,800,000 -24,800,000 -22,700,000 -15,500,000 -11,200,000 -19,000,000 -9,300,000 -9,100,000 -9,100,000 -28,900,000 -13,200,000 -11,900,000 -3,600,000 -18,800,000 -9,300,000 -8,900,000 -3,300,000 -20,900,000 -9,900,000 -6,100,000 -5,400,000 -34,100,000 -18,600,000 -18,900,000 -9,800,000 -37,200,000 -14,600,000 -11,300,000 -8,600,000 -13,600,000 -12,600,000 -18,000,000 -13,300,000 -20,500,000 -13,600,000 -9,300,000 -6,500,000 -22,600,000 -14,900,000 -10,900,000 -8,000,000 -6,100,000 -5,300,000 -4,600,000 -6,400,000                     
          capital expenditures—real estate
        -2,500,000     -76,000,000 -2,200,000 -67,400,000     -3,100,000    -2,300,000 -5,500,000 -2,300,000    -17,600,000 -5,500,000   -3,400,000 -7,200,000 -7,900,000 -20,600,000 -1,800,000                -600,000                     
          proceeds from dealership divestitures
        361,500,000 113,600,000 230,600,000 188,800,000 33,500,000 47,000,000 47,300,000 102,000,000                                                                         
          purchases of debt securities—available-for-sale
        -26,500,000 -35,600,000 -55,900,000 -39,300,000 -58,600,000 -105,000,000 -20,600,000 -19,300,000 -20,100,000 -30,300,000 -40,700,000 -80,100,000 -44,100,000 -69,800,000 -106,500,000 -13,600,000 -12,300,000                                                                 
          proceeds from the sale of debt securities—available-for-sale
        20,600,000 34,800,000 33,800,000 18,200,000 46,000,000 79,800,000 48,500,000 12,000,000 9,500,000 8,100,000 34,500,000 14,200,000 3,500,000 13,700,000 26,600,000 17,200,000 12,200,000                                                                 
          proceeds from the disposition of assets
        5,700,000                                                                                 
          net cash from investing activities
        312,400,000 34,000,000 -1,620,300,000 129,600,000 -500,000 -155,000,000 35,800,000 -4,400,000 -13,600,000 -1,588,000,000 -27,900,000 -7,300,000 -55,200,000 231,700,000 -111,200,000 112,900,000 231,300,000 -3,668,400,000 -19,800,000 -225,100,000 -3,700,000 -2,700,000 -854,200,000 -9,100,000 45,200,000 -21,400,000 -113,900,000 34,700,000 -127,000,000 -16,800,000 -13,700,000 -54,700,000 -64,400,000 -29,800,000 -6,100,000 -6,400,000 -85,500,000 82,400,000 -25,700,000 -34,800,000 -17,000,000 5,900,000 39,700,000 -97,100,000 -10,400,000 -147,800,000 -29,200,000 -35,500,000 -18,300,000 -23,800,000 -105,000,000 -24,100,000 27,400,000 -68,900,000 -18,300,000 -12,300,000 -14,000,000 5,800,000 -22,100,000 -2,200,000 52,800,000 -2,700,000 6,000,000 -2,500,000 1,700,000 16,300,000 600,000 -10,300,000 -23,800,000 -210,400,000 -47,900,000 -59,815,000 -41,120,000    -10,103,000     
          cash flow from financing activities:
                                                                                         
          floor plan borrowings—non-trade
        2,137,100,000 2,435,500,000 3,436,100,000 2,375,100,000 2,135,300,000 2,527,300,000 2,084,300,000 2,301,300,000 2,532,800,000 2,742,700,000 1,923,900,000 1,919,600,000 1,799,600,000 1,904,500,000 1,883,600,000 1,744,700,000 1,873,700,000 1,638,000,000 1,003,800,000 1,181,500,000 1,219,500,000 1,473,700,000 1,204,500,000 509,700,000 1,124,100,000 1,199,900,000 1,073,800,000 978,600,000 1,066,300,000 1,282,200,000 1,069,200,000 1,226,500,000 1,014,000,000 1,032,200,000 826,700,000 1,083,000,000 908,400,000 945,900,000 977,900,000 994,000,000 948,500,000 979,100,000 1,061,200,000 1,145,000,000 945,000,000 1,156,700,000 937,100,000 868,500,000 759,000,000 840,000,000 844,900,000 769,200,000 730,500,000 794,000,000 746,900,000 743,200,000 696,500,000 913,300,000 87,200,000 94,800,000 113,400,000 99,600,000 90,200,000 91,200,000 74,400,000 102,500,000 61,500,000 146,900,000              
          floor plan repayments—non-trade
        -2,405,900,000 -2,510,200,000 -2,886,900,000 -2,556,700,000 -2,261,100,000 -2,361,200,000 -2,214,800,000 -2,449,700,000 -2,631,600,000 -1,413,900,000 -1,923,900,000 -1,923,800,000 -1,798,200,000 -1,901,800,000 -1,874,400,000 -2,111,300,000 -2,004,100,000 -1,432,000,000 -1,116,600,000 -1,433,000,000 -1,375,900,000 -1,471,600,000 -1,137,700,000 -771,100,000 -1,086,900,000 -1,240,200,000 -1,151,900,000 -1,087,600,000 -1,033,600,000 -1,159,000,000 -1,107,900,000 -1,156,700,000 -966,800,000 -982,900,000 -936,400,000 -1,077,900,000 -923,800,000 -934,400,000 -1,025,300,000 -921,700,000 -866,900,000 -1,132,100,000 -1,030,400,000 -1,099,100,000 -907,200,000 -992,200,000 -998,000,000 -841,600,000 -780,500,000 -811,900,000 -786,300,000 -795,800,000 -768,700,000 -716,200,000 -783,100,000 -717,700,000 -628,200,000 -613,600,000 -93,900,000 -104,400,000 -105,400,000 -101,900,000 -107,600,000 -80,600,000 -104,400,000 -96,000,000 -103,300,000               
          floor plan repayments—divestitures
        -77,800,000 -18,700,000 -30,200,000 -24,400,000 -17,400,000    -6,900,000     -26,800,000 -1,700,000 -19,900,000                                                                 
          repayments of borrowings
        -47,400,000 -79,300,000 -56,600,000 -84,600,000 -13,600,000 -14,500,000 -19,300,000 -22,900,000 -14,700,000 -17,200,000 -26,000,000 -67,500,000 -15,300,000 -57,700,000 -24,400,000 -16,400,000 -7,700,000 -7,800,000 -9,800,000 -9,200,000 -14,700,000 -22,800,000 -442,500,000 -1,100,000 -1,156,100,000 -36,400,000 -4,100,000 -4,000,000 -3,900,000 -9,200,000 -3,600,000 -3,500,000 -3,600,000 -40,500,000 -3,900,000 -3,800,000 -3,800,000 -4,000,000 -4,000,000 -4,100,000 -3,100,000 -2,700,000 -2,800,000 -2,900,000 -2,900,000 -303,100,000 -3,000,000 -2,600,000 -2,300,000 -1,500,000 -148,000,000 -1,200,000 -1,200,000 -700,000 -15,600,000 -17,000,000 -25,800,000 -36,900,000 -50,300,000 -2,400,000 -7,100,000 -2,000,000 -2,200,000 -8,600,000 -10,400,000 -2,600,000 -54,700,000 -66,200,000 -35,600,000 -15,600,000 -8,700,000 -10,568,000 -461,000         
          proceeds from revolving credit facility
        475,000,000 600,000,000 950,000,000 300,000,000 302,700,000 200,000,000 430,700,000 582,800,000     10,000,000 320,000,000                                                                 
          repayments of revolving credit facility
        -475,000,000 -555,000,000 -875,000,000 -300,000,000 -302,700,000 -430,700,000 -200,000,000 -582,800,000     -10,000,000 -489,000,000                                                                 
          purchases of treasury stock
        -147,000,000      -88,900,000 -43,200,000 -50,000,000  -190,100,000 -30,200,000  -200,000,000                                                                 
          repurchases of common stock, associated with net share settlements of employee share-based awards
        -9,800,000  -100,000 -200,000 -12,500,000  -200,000 -100,000 -9,800,000                                                                         
          net cash from financing activities
        -550,700,000 -177,600,000 1,290,800,000 -290,800,000 -169,300,000 -80,100,000 -446,900,000 196,900,000 -180,200,000 1,518,900,000 -26,200,000 -261,900,000 -55,000,000 -169,300,000 -15,400,000 -384,700,000 -534,900,000 3,311,600,000 -123,200,000 -76,900,000 -180,700,000 -27,300,000 174,500,000 -193,200,000 212,200,000 21,000,000 -81,100,000 -131,300,000 64,400,000 114,600,000 -59,300,000 59,100,000 28,700,000 8,600,000 -118,700,000 -14,000,000 -13,100,000 -73,900,000 -53,900,000 7,600,000 -26,400,000 -17,400,000 -93,500,000 88,800,000 -71,500,000 214,000,000 -44,600,000 10,300,000 -35,600,000 52,200,000 -11,000,000 74,700,000 -41,900,000 106,500,000 -19,000,000 -1,500,000 43,000,000 248,900,000 -70,100,000 -25,300,000 -16,600,000 -4,300,000 -19,600,000 2,300,000 -40,500,000 2,900,000 -98,600,000 9,900,000 -342,100,000 113,100,000 20,500,000  -54,464,000 5,518,000 16,042,000       
          net increase in cash and cash equivalents
        -15,100,000 8,200,000 -22,600,000 -69,800,000 55,200,000 9,100,000 -6,900,000 38,200,000 -16,700,000    61,500,000 94,000,000 41,200,000 -184,200,000 105,400,000 -151,700,000 228,300,000 74,500,000 26,400,000 -2,700,000 -609,100,000 224,600,000 385,100,000 1,700,000 -7,800,000 -1,300,000 2,600,000 1,500,000   100,000 1,900,000   -300,000 -300,000   1,600,000  2,000,000 800,000 -1,800,000  4,100,000 900,000 700,000                       12,560,000 -7,886,000      2,680,000   
          cash and cash equivalents, beginning of period
        40,400,000 69,400,000 45,700,000 235,300,000 178,900,000 1,400,000 3,500,000 8,300,000 4,700,000 3,400,000 2,800,000 2,900,000 5,400,000 6,200,000 11,400,000 21,300,000    91,600,000  53,400,000  129,170,000  57,194,000  28,093,000 
          cash and cash equivalents, end of period
        25,300,000 8,200,000 -22,600,000 -69,800,000 124,600,000 9,100,000 -6,900,000 38,200,000 29,000,000 4,100,000 -35,900,000 -219,300,000 296,800,000 94,000,000 41,200,000 -184,200,000 284,300,000 -151,700,000 228,300,000 74,500,000 27,800,000 -2,700,000 -609,100,000 224,600,000 388,600,000 1,700,000 -7,800,000 -1,300,000 10,900,000 1,500,000 4,300,000 -2,300,000 4,800,000 1,900,000 100,000 -400,000 3,100,000 -300,000 1,900,000 -2,600,000 4,400,000 -1,100,000 2,000,000 800,000 1,100,000 -8,200,000 4,100,000 900,000 6,100,000 4,100,000 -65,700,000 66,900,000 100,000 300,000 -2,800,000 4,400,000 4,300,000 3,200,000 -15,000,000 15,300,000 7,900,000    -8,200,000 6,200,000 35,700,000  -13,400,000 9,100,000 25,700,000  -7,886,000 -45,817,000 94,497,000  44,378,000 29,223,000 59,874,000  39,253,000 
          deferred income taxes
             52,600,000 200,000 -100,000 37,500,000 -600,000 2,800,000 152,900,000 -1,700,000 -2,300,000 -400,000        100,000     4,700,000    2,700,000 -100,000 100,000 100,000 -300,000 4,000,000 1,000,000 1,400,000 8,500,000 900,000 1,900,000 -1,800,000 14,200,000 1,200,000 1,800,000 100,000 8,400,000 3,100,000 2,800,000 1,200,000 3,300,000 2,800,000 4,900,000 1,600,000 7,100,000 3,200,000 5,900,000 1,000,000 8,100,000 2,700,000 -1,200,000 16,600,000 100,000 -165,500,000 3,600,000 2,800,000 3,300,000 619,000 3,507,000         
          change in right-of-use asset
           7,200,000 7,200,000                6,800,000 8,500,000 3,700,000 4,100,000 5,200,000 5,100,000 5,000,000                                                       
          purchases of previously leased real estate
                -11,900,000                 -4,900,000        -7,100,000          -2,900,000 -19,000,000   -8,900,000 -3,900,000                          
          acquisitions
         22,100,000               -16,100,000 -1,000,000 -891,000,000 -63,100,000 -91,500,000 -118,500,000 -45,800,000 -45,500,000 -80,100,000     -2,000,000   -130,300,000 -17,300,000 -4,600,000                  -100,000 -41,800,000 -46,638,000 -36,404,000         
          proceeds from the sale of equity securities
                 51,200,000 600,000 800,000 40,600,000 5,600,000 3,300,000                                                                 
          proceeds from the sale of assets
                 14,000,000       7,500,000 14,000,000 4,200,000 7,500,000   2,000,000 2,000,000 2,000,000        1,300,000       33,900,000 4,300,000 1,000,000   12,500,000 15,800,000 76,100,000 1,600,000 9,600,000 -200,000 3,100,000 19,000,000 3,200,000 -700,000 5,400,000 12,100,000 8,600,000 3,236,000 73,000 -48,000 8,389,000 9,106,000 1,569,000 32,847,000 9,275,000 97,480,000  
          floor plan borrowings—acquisitions
                        214,200,000    104,500,000 27,100,000 7,600,000 47,700,000 13,200,000 9,500,000 25,100,000                               7,600,000 5,460,000 11,732,000         
          proceeds from borrowings
                        2,089,600,000   450,600,000 69,400,000 1,355,300,000                 210,200,000   413,400,000    36,300,000 78,700,000 109,700,000 12,500,000 32,100,000          900,000 53,900,000 61,400,000 179,200,000 8,300,000 18,320,000 265,000,000 85,000 902,000 1,265,000 2,107,000 
          payment of debt issuance costs
                    -400,000     -1,600,000 -3,100,000            -100,000 -2,400,000   -700,000 -1,300,000 -8,000,000    -1,000,000 -3,600,000 -2,300,000 -100,000 -400,000    -4,200,000                        
          purchase of treasury stock
                                                                                -13,432,000         
          repurchases of common stock, including amounts associated with net share settlements of employee share-based awards
                   -100,000 -10,900,000 -100,000 -200,000 -8,900,000                                                                 
          unrealized loss on investments
                                                                                         
          purchases of equity securities
                     -33,000,000 -5,100,000 -3,300,000                                                                 
          proceeds from issuance of common stock
                     1,400,000                                                                 
          gains on investments
              -300,000                                                                           
          purchase of previously leased real estate
                                                               -13,400,000 -16,900,000                     
          floor plan repayments—non-trade—divestitures
              -8,000,000                                                                           
          unrealized gains on investments
                -100,000                                                                         
          acquisitions, net of cash acquired
                                                                                         
          unrealized losses on investments
                  1,400,000 -200,000 -3,100,000   8,700,000 3,300,000                                                                 
          divestitures
                     -700,000 127,500,000 252,200,000    16,300,000 46,100,000 115,500,000                 49,600,000                                        
          net decrease in cash and cash equivalents
                  -35,900,000                                       4,100,000   -6,100,000 300,000   -7,100,000 3,200,000   -13,400,000 -2,400,000 -55,300,000  -8,200,000 6,200,000 -55,900,000  -13,400,000 9,100,000 -27,700,000           
          franchise rights impairment
                             23,000,000                                                         
          loss on extinguishment of debt
                                                                400,000                        
          sale and leaseback transaction
                                                                                         
          losses on investments
                                                                                         
          amortization of debt securities discount/premium
                      100,000 700,000 -100,000                                                                 
          loss on extinguishment of long-term debt
                              20,600,000                                           -34,200,000    786,000 17,737,000 230,000      
          accounts payable and other current liabilities
                          10,700,000 -7,500,000 4,400,000  106,100,000 30,900,000 -52,600,000  20,000,000 -12,800,000 4,600,000                                                     
          floor plan repayments—non-trade divestitures
                              -4,800,000                           -5,400,000 -2,500,000   -14,800,000   -2,900,000               
          proceeds from sale and leaseback transaction
                              7,300,000                                                         
          repurchases of common stock, including shares associated with net share settlement of employee share-based awards
                          -100,000 -600,000 -9,600,000  -100,000 -100,000 -5,000,000  -4,200,000 -4,200,000 -12,100,000  -17,000,000 -20,400,000 -24,400,000  -5,100,000 -15,300,000 -19,000,000                                             
          floor plan repayments—non-trade divestiture
                                -50,500,000                                                         
          gain on divestiture
                                                                                        
          divestiture
                                                                                        
          floor plan repayments—divestiture
                                                                                        
          change in right of use asset
                                    4,500,000                                                     
          non-cash impairment charges
                                                                                         
          stock-based compensation
                                      2,500,000     3,300,000 3,100,000  3,000,000 2,500,000 3,600,000 2,300,000 2,400,000 2,000,000 3,300,000 1,900,000 2,400,000 1,800,000 2,500,000 2,100,000 2,500,000 1,900,000 2,500,000 1,500,000 1,800,000 1,400,000 2,400,000 1,100,000 2,500,000 2,600,000 2,600,000 1,200,000 1,900,000 1,200,000 700,000 -600,000 1,500,000 700,000 -400,000 300,000 1,300,000    1,895,000   927,000 1,369,000   
          impairment expenses
                                             500,000 1,600,000 1,500,000                                        
          excess tax benefit on share-based arrangements
                                             -200,000 -100,000 -1,400,000 -3,100,000 -100,000 -100,000 -900,000 -2,400,000 -100,000 -200,000 -2,000,000 -3,300,000 -400,000 -1,700,000 -2,400,000 -700,000 -100,000 -600,000                     
          proceeds from the sale of accounts receivable
                                                     500,000 2,000,000 2,600,000 3,400,000 3,400,000 4,100,000 4,000,000 4,600,000 4,600,000 5,100,000 5,100,000 5,700,000 5,600,000 5,600,000 5,800,000 5,800,000 5,800,000 5,300,000 5,400,000 5,400,000 5,100,000 4,700,000 5,100,000 5,600,000 4,864,000 4,826,000 4,958,000 5,636,000 5,244,000 5,029,000 4,669,000 4,649,000 4,477,000 4,157,000 
          proceeds from the exercise of stock options
                                                         100,000 100,000 2,100,000 300,000 1,500,000 3,600,000 2,000,000 200,000 800,000 200,000 100,000 300,000 1,000,000   100,000 100,000 -97,000 429,000 2,611,000 313,000   1,024,000 2,900,000 519,000 303,000 
          repurchases of common stock, including those associated with net share settlement of employee share-based awards
                                               -60,300,000 -105,100,000 -44,500,000 -104,300,000 -55,200,000 -108,200,000 -92,200,000 -39,900,000 -20,900,000 -14,700,000 -9,700,000 -8,200,000 -5,100,000 -11,600,000 -7,600,000 -6,400,000                           
          loss on disposal of fixed assets
                                                  200,000 500,000 200,000 300,000   800,000 -100,000                               
          capital expenditures—capitalized interest
                                                    -100,000 -100,000 -200,000 -400,000 -400,000 -400,000                               
          floor plan borrowings—non-trade acquisitions
                                                    39,200,000 6,000,000 500,000                                 
          lease termination charges
                                                                                       
          gain on sale of assets
                                                         -14,600,000 -900,000 -1,000,000   -8,200,000 -900,000 -25,900,000                     
          proceeds from deferred compensation plan termination
                                                         7,800,000                             
          distribution of deferred compensation plan assets to participants
                                                         -7,800,000                             
          deferred compensation plan excess funding refund
                                                             3,200,000                         
          purchases of real estate
                                                     -4,400,000    -10,200,000   -6,100,000 -500,000                           
          floor plan notes payable—trade divestitures
                                                                 -1,800,000 -4,100,000 -18,900,000 -5,900,000 -2,500,000                
          swap termination settlement
                                                                                         
          other investing activities
                                                                 600,000 -200,000 -200,000 -100,000 -100,000 -100,000 -400,000 -300,000 -500,000 1,300,000 -1,000,000 -282,000 -502,000         
          lease termination charge
                                                                                         
          purchase of real estate
                                                                -6,000,000 -600,000 -16,800,000                       
          purchases of treasury stock, including shares associated with net share settlement of employee share-based awards
                                                                -2,700,000 -15,700,000                        
          purchases of treasury stock, including those associated with net share settlement of employee share-based awards
                                                                   -13,600,000 -4,100,000                     
          capital expenditures
        -4,100,000 -3,400,000 -2,200,000 -1,300,000 -2,600,000 -2,200,000 -9,200,000 -28,600,000       
          free cash flows
        223,200,000 151,900,000 306,900,000 91,400,000 225,000,000 244,200,000 404,300,000 -154,400,000 177,100,000 73,200,000 18,100,000 50,000,000 171,700,000 31,600,000 167,800,000 87,600,000 409,000,000 205,100,000 371,300,000 376,500,000 210,800,000 27,300,000 70,600,000 426,900,000 127,700,000 2,100,000 187,200,000 95,300,000 65,200,000 -96,300,000 77,300,000 -6,700,000 35,800,000 23,100,000 124,900,000 20,000,000 98,300,000 -8,800,000 81,500,000 24,600,000 45,000,000 10,400,000 55,800,000 9,100,000 80,100,000 -74,400,000 77,900,000 26,100,000 54,600,000 -24,300,000 50,300,000 16,300,000 8,400,000 -37,300,000 34,500,000 18,200,000 -36,100,000 -251,500,000 77,200,000 42,800,000 -49,600,000 500,000 -45,100,000 49,000,000 29,300,000 -15,600,000 39,900,000 61,400,000 323,900,000 106,400,000 -300,000 29,727,000 87,698,000     31,999,000 73,686,000   
          payments of debt issuance costs
                                                                           -500,000 -2,000,000             
          purchases of treasury stock associated with net share settlement of employee share-based awards
                                                                     -200,000 -100,000                   
          cash and cash equivalents, beginning of year
                                                                      84,700,000                   
          cash and cash equivalents, end of year
                                                                      29,400,000                   
          excess tax benefits from share-based payment arrangements
                                                                               -109,000 -73,000 -2,396,000 891,000  1,204,000 138,000 381,000   
          construction reimbursements associated with sale-leaseback agreements
                                                                           -100,000 1,900,000 7,854,000   265,000     
          payments of dividends
                                                                           -100,000 -7,000,000 -7,200,000 -7,200,000           
          proceeds from the sale of warrants
                                                                                         
          purchase of equity call option
                                                                                         
          proceeds from the sale of assets associated with sale-leaseback agreements
                                                                               3,181,000       
          payments of deferred finance fees
                                                                                         
          purchase of treasury stock associated with net share settlement of employee share-based awards
                                                                        -100,000             
          floor plan repayments— non-trade
                                                                                         
          floor plan repayments— non-trade divestitures
                                                                                         
          floor plan notes payable—manufacturer affiliated
                                                                             12,200,000 -16,300,000     25,901,000 -37,097,000 28,286,000 98,695,000   
          floor plan notes payable—manufacturer affiliated divestitures
                                                                             -4,600,000           
          floor plan borrowings—non-manufacturer affiliated
                                                                             622,500,000 660,700,000   725,481,000 663,002,000 637,794,000 565,189,000 595,928,000 677,249,000   
          floor plan repayments—non-manufacturer affiliated
                                                                             -663,600,000 -638,100,000           
          floor plan repayments—non-manufacturer affiliated divestitures
                                                                             -1,600,000 -1,200,000           
          capital expenditures—internally financed
                                                                              -8,500,000 -9,274,000 -6,812,000         
          capital expenditures—externally financed
                                                                              -7,100,000 -6,857,000 -5,329,000         
          repurchases of common stock associated with net share settlement of employee share-based awards
                                                                              -1,000,000           
          floor plan repayments— non-manufacturer affiliated divestitures
                                                                                         
          repurchase of common stock associated with net share settlement of employee share-based awards
                                                                                         
          net cash provided (used) by financing activities
                                                                                         
          adjustments to reconcile net income to net cash from operating activities-
                                                                                         
          depreciation and amortization from discontinued operations
                                                                                8,000 27,000 103,000 34,000 111,000 64,000 80,000  
          amortization of deferred financing fees
                                                                                645,000 657,000 627,000 600,000 601,000 585,000 573,000 586,000 343,000 
          change in allowance for doubtful accounts
                                                                                20,000        210,000 
          loss on sale of discontinued operations
                                                                                2,001,000       
          changes in operating assets and liabilities, net of acquisitions and divestitures-
                                                                                         
          prepaid and other current assets
                                                                                -12,515,000         
          floor plan notes payable—manufacturer affiliated, excluding divestitures
                                                                                         
          floor plan borrowings—non-manufacturer affiliated, excluding acquisitions
                                                                                         
          floor plan repayments—non-manufacturer affiliated, excluding divestitures
                                                                                         
          floor plan repayments—non manufacturer affiliated divestitures
                                                                                         
          payment of dividends
                                                                                -7,331,000         
          debt issuance costs
                                                                                        
          sale of warrants
                                                                                8,924,000       
          purchase of convertible note hedge
                                                                                        
          purchase of treasury stock associated with share-based payment arrangements
                                                                                         
          purchase of treasury stock associated with share-based awards
                                                                                         
          net cash (used in) provided by operating activities
                                                                                         
          repayments of debt
                                                                                         
          net (decrease) increase in cash and cash equivalents
                                                                                         
          loss on sale of franchises
                                                                                         
          change in deferred income taxes
                                                                                         
          excess tax benefits from stock-based payment arrangements
                                                                                         
          net cash provided by (used in) operating activities
                                                                                        41,112,000 
          other
                                                                                         
          net cash from (used in) investing activities
                                                                                         
          dividends
                                                                                         
          net cash (used in) provided by financing activities
                                                                                         
          net cash provided by operating activities
                                                                                         
          net proceeds from share-based payment arrangements
                                                                                         
          net increase (decrease) in cash and cash equivalents
                                                                                    44,378,000    11,160,000 
          gain on sale of discontinued operations
                                                                                         
          impairment of goodwill
                                                                                         
          capital expenditures—non-financed
                                                                                         
          capital expenditures—financeable
                                                                                         
          proceeds from issuance of senior subordinated notes
                                                                                         
          distributions to members
                                                                                         
          net cash provided by financing activities
                                                                                         
          floor plan notes payable – manufacturer affiliated
                                                                                         
          capital expenditures – non-financed
                                                                                         
          capital expenditures – financeable
                                                                                         
          construction advances associated with sale-leaseback agreements
                                                                                        2,032,000 
          floor plan notes payable – non-manufacturer affiliated
                                                                                         
          floor plan notes payable
                                                                                        37,952,000 
          proceeds from the sale of property and equipment
                                                                                        121,000 
          proceeds from the sale of discontinued operations
                                                                                        1,118,000 
          purchase of restricted investments
                                                                                         
          maturities of restricted investments
                                                                                        913,000 
          net issuance of finance contracts
                                                                                         
          proceeds from the sale of restricted investments
                                                                                         
          proceeds from initial public offering
                                                                                         
          contributions from members
                                                                                         
          net cash provided by (used in) financing activities
                                                                                         
          supplemental disclosure of cash flow information:
                                                                                         
          income taxes
                                                                                         
          non-cash investing and financing activities:
                                                                                         
          issuance of equity interest for acquisitions
                                                                                         
          members' equity surrendered in purchase price settlement