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Revenue Recognition Disaggregation of Revenue (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues |  | $ 5,461.2 | $ 5,349.2 | $ 15,786.8 | $ 16,001.1
Transferred at Point in Time [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues |  | 4,768.6 | 4,681.6 | 13,731.7 | 14,014.0
Transferred over Time [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | [1] | 692.6 | 667.6 | 2,055.1 | 1,987.1
New Vehicle [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues |  | 2,874.8 | 2,933.1 | 8,141.1 | 8,685.0
Used Vehicle [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues |  | 1,402.9 | 1,281.7 | 4,121.9 | 3,910.9
Parts and Service [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues |  | 902.6 | 864.0 | 2,680.8 | 2,579.6
Finance and Insurance, Net [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues |  | 266.2 | 247.4 | 757.9 | 736.0
Product and Service, Other [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues |  | 14.7 | 23.0 | 85.1 | 89.6
AN Reportable Segment, Domestic [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues |  | 1,728.6 | 1,789.7 | 5,004.7 | 5,389.5
AN Reportable Segment, Domestic [Member] | Transferred at Point in Time [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues |  | 1,547.1 | 1,613.5 | 4,473.6 | 4,870.0
AN Reportable Segment, Domestic [Member] | Transferred over Time [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | [1] | 181.5 | 176.2 | 531.1 | 519.5
AN Reportable Segment, Domestic [Member] | New Vehicle [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues |  | 925.4 | 988.5 | 2,600.9 | 2,913.7
AN Reportable Segment, Domestic [Member] | Used Vehicle [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues |  | 456.6 | 424.4 | 1,347.0 | 1,334.4
AN Reportable Segment, Domestic [Member] | Parts and Service [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues |  | 244.7 | 271.6 | 722.2 | 810.8
AN Reportable Segment, Domestic [Member] | Finance and Insurance, Net [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues |  | 95.1 | 88.6 | 265.3 | 263.2
AN Reportable Segment, Domestic [Member] | Product and Service, Other [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues |  | 6.8 | 16.6 | 69.3 | 67.4
AN Reportable Segment, Import [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues |  | 1,722.5 | 1,770.6 | 4,845.9 | 5,140.2
AN Reportable Segment, Import [Member] | Transferred at Point in Time [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues |  | 1,543.1 | 1,591.6 | 4,313.3 | 4,603.3
AN Reportable Segment, Import [Member] | Transferred over Time [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | [1] | 179.4 | 179.0 | 532.6 | 536.9
AN Reportable Segment, Import [Member] | New Vehicle [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues |  | 1,003.8 | 1,070.3 | 2,740.1 | 3,045.0
AN Reportable Segment, Import [Member] | Used Vehicle [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues |  | 386.4 | 365.3 | 1,143.9 | 1,092.3
AN Reportable Segment, Import [Member] | Parts and Service [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues |  | 226.1 | 235.8 | 675.5 | 707.1
AN Reportable Segment, Import [Member] | Finance and Insurance, Net [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues |  | 99.9 | 94.4 | 275.8 | 275.8
AN Reportable Segment, Import [Member] | Product and Service, Other [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues |  | 6.3 | 4.8 | 10.6 | 20.0
AN Reportable Segment, Premium Luxury [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues |  | 1,820.5 | 1,668.8 | 5,375.5 | 5,116.8
AN Reportable Segment, Premium Luxury [Member] | Transferred at Point in Time [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues |  | 1,579.0 | 1,441.5 | 4,654.0 | 4,440.5
AN Reportable Segment, Premium Luxury [Member] | Transferred over Time [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | [1] | 241.5 | 227.3 | 721.5 | 676.3
AN Reportable Segment, Premium Luxury [Member] | New Vehicle [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues |  | 945.6 | 874.3 | 2,800.1 | 2,726.3
AN Reportable Segment, Premium Luxury [Member] | Used Vehicle [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues |  | 519.7 | 463.6 | 1,524.2 | 1,405.9
AN Reportable Segment, Premium Luxury [Member] | Parts and Service [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues |  | 283.8 | 269.4 | 847.7 | 804.1
AN Reportable Segment, Premium Luxury [Member] | Finance and Insurance, Net [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues |  | 70.0 | 60.0 | 200.0 | 178.6
AN Reportable Segment, Premium Luxury [Member] | Product and Service, Other [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues |  | 1.4 | 1.5 | 3.5 | 1.9
Corporate and Other [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | [2] | 189.6 | 120.1 | 560.7 | 354.6
Corporate and Other [Member] | Transferred at Point in Time [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | [2] | 99.4 | 35.0 | 290.8 | 100.2
Corporate and Other [Member] | Transferred over Time [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | [1],[2] | 90.2 | 85.1 | 269.9 | 254.4
Corporate and Other [Member] | New Vehicle [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | [2] | 0.0 | 0.0 | 0.0 | 0.0
Corporate and Other [Member] | Used Vehicle [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | [2] | 40.2 | 28.4 | 106.8 | 78.3
Corporate and Other [Member] | Parts and Service [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | [2] | 148.0 | 87.2 | 435.4 | 257.6
Corporate and Other [Member] | Finance and Insurance, Net [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | [2] | 1.2 | 4.4 | 16.8 | 18.4
Corporate and Other [Member] | Product and Service, Other [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues | [2] | $ 0.2 | $ 0.1 | $ 1.7 | $ 0.3
[1] | Represents revenue recognized during the period for automotive repair and maintenance services.
[2] | Corporate and other is comprised of our other businesses, including collision centers, auction operations, AutoNation USA stand-alone used vehicle sales and service centers, and parts distribution centers.

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