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v3.6.0.2

Segment Information (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2016 USD ($) segments | Dec. 31, 2015 USD ($) segments | Dec. 31, 2014 USD ($) segments
Segment Reporting Information [Line Items] |  |  |  |
Number of reportable segments | segments |  | 3 | 3 | 3
Segment Reporting Information, Revenue for Reportable Segment [Abstract] |  |  |  |
Total revenues |  | $ 21,609.0 | $ 20,862.0 | $ 19,108.8
Segment Reporting Information, Income (Loss) before Income Taxes [Abstract] |  |  |  |
Total segment income | [1] | 958.1 | 1,024.5 | 942.4
Corporate and other |  | (145.1) | (209.7) | (174.9)
Other interest expense |  | (115.5) | (90.9) | (86.7)
Loss on debt extinguishment |  | 0.0 | 0.0 | (1.6)
Interest income |  | 1.1 | 0.1 | 0.2
Other income (loss), net |  | 3.7 | (1.3) | 2.9
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES |  | 702.3 | 722.7 | 682.3
Floorplan Interest Expense [Abstract] |  |  |  |
Floorplan interest expense |  | 76.5 | 58.3 | 53.3
Depreciation, Depletion and Amortization [Abstract] |  |  |  |
Depreciation and amortization |  | 143.4 | 127.4 | 106.9
Assets [Abstract] |  |  |  |
Assets |  | 10,060.0 | 9,548.2 | 8,395.0
Segment Reporting, Other Significant Reconciling Item, Consolidated [Abstract] |  |  |  |
Capital expenditures |  | 253.2 | 266.9 | 197.8
AN Reportable Segment, Domestic [Member] |  |  |  |
Segment Reporting Information, Revenue for Reportable Segment [Abstract] |  |  |  |
Total revenues |  | 7,810.0 | 7,069.8 | 6,359.5
Segment Reporting Information, Income (Loss) before Income Taxes [Abstract] |  |  |  |
Total segment income | [1] | 311.1 | 336.9 | 285.0
Floorplan Interest Expense [Abstract] |  |  |  |
Floorplan interest expense |  | 33.7 | 24.1 | 24.4
Depreciation, Depletion and Amortization [Abstract] |  |  |  |
Depreciation and amortization |  | 37.5 | 31.0 | 27.3
Assets [Abstract] |  |  |  |
Assets |  | 2,742.8 | 2,573.9 | 2,187.3
Segment Reporting, Other Significant Reconciling Item, Consolidated [Abstract] |  |  |  |
Capital expenditures |  | 62.5 | 61.4 | 61.7
AN Reportable Segment, Import [Member] |  |  |  |
Segment Reporting Information, Revenue for Reportable Segment [Abstract] |  |  |  |
Total revenues |  | 6,886.1 | 7,037.2 | 6,717.8
Segment Reporting Information, Income (Loss) before Income Taxes [Abstract] |  |  |  |
Total segment income | [1] | 296.8 | 311.4 | 291.3
Floorplan Interest Expense [Abstract] |  |  |  |
Floorplan interest expense |  | 17.4 | 15.0 | 14.5
Depreciation, Depletion and Amortization [Abstract] |  |  |  |
Depreciation and amortization |  | 35.4 | 32.9 | 31.0
Assets [Abstract] |  |  |  |
Assets |  | 2,065.5 | 2,145.2 | 1,997.7
Segment Reporting, Other Significant Reconciling Item, Consolidated [Abstract] |  |  |  |
Capital expenditures |  | 28.0 | 34.0 | 47.0
AN Reportable Segment, Premium Luxury [Member] |  |  |  |
Segment Reporting Information, Revenue for Reportable Segment [Abstract] |  |  |  |
Total revenues |  | 6,665.3 | 6,607.8 | 5,889.3
Segment Reporting Information, Income (Loss) before Income Taxes [Abstract] |  |  |  |
Total segment income | [1] | 350.2 | 376.2 | 366.1
Floorplan Interest Expense [Abstract] |  |  |  |
Floorplan interest expense |  | 22.7 | 18.0 | 13.1
Depreciation, Depletion and Amortization [Abstract] |  |  |  |
Depreciation and amortization |  | 40.7 | 35.0 | 28.3
Assets [Abstract] |  |  |  |
Assets |  | 2,603.4 | 2,554.6 | 2,051.0
Segment Reporting, Other Significant Reconciling Item, Consolidated [Abstract] |  |  |  |
Capital expenditures |  | 95.6 | 101.9 | 68.3
AN Reportable Segments [Member] |  |  |  |
Segment Reporting Information, Revenue for Reportable Segment [Abstract] |  |  |  |
Total revenues |  | 21,361.4 | 20,714.8 | 18,966.6
Corporate and Other [Member] |  |  |  |
Segment Reporting Information, Revenue for Reportable Segment [Abstract] |  |  |  |
Total revenues |  | 247.6 | 147.2 | 142.2
Floorplan Interest Expense [Abstract] |  |  |  |
Floorplan interest expense |  | 2.7 | 1.2 | 1.3
Depreciation, Depletion and Amortization [Abstract] |  |  |  |
Depreciation and amortization |  | 29.8 | 28.5 | 20.3
Segment Reporting, Other Significant Reconciling Item, Consolidated [Abstract] |  |  |  |
Capital expenditures |  | 67.1 | 69.6 | 20.8
Corporate and Other [Member] | Goodwill [Member] |  |  |  |
Assets [Abstract] |  |  |  |
Assets |  | 1,511.3 | 1,394.5 | 1,314.7
Corporate and Other [Member] | Franchise Rights [Member] |  |  |  |
Assets [Abstract] |  |  |  |
Assets |  | 589.4 | 432.4 | 348.1
Corporate and Other [Member] | Other Corporate and Other Assets [Member] |  |  |  |
Assets [Abstract] |  |  |  |
Assets |  | $ 547.6 | $ 447.6 | $ 496.2
[1] | Segment income represents income for each of our reportable segments and is defined as operating income less floorplan interest expense.

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