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v3.20.4

Credit Facilities and Long-term Debt - Narrative (Details) |  |  |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Oct. 09, 2020 USD ($) | Jul. 14, 2020 USD ($) financial_institution finance_company | Dec. 09, 2019 USD ($) | Jul. 24, 2017 USD ($) | Dec. 31, 2020 USD ($) finance_company financial_institution | Jul. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt instrument, number of counter-parties | finance_company |  | 2 |  |  |  |  |
Floor plan notes payable |  |  |  |  | $ 234,200,000 |  | $ 425,200,000
Floor Plan Notes Payable | Maximum |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate, stated percentage |  |  |  |  | 5.25% |  |
Line of Credit | Credit Facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Number of financial institutions | financial_institution |  |  |  |  | 19 |  |
Number of manufacturer affiliated finance companies | finance_company |  |  |  |  | 7 |  |
Total financing commitment |  |  |  |  | $ 2,800,000,000 |  |
Higher borrowing capacity option |  |  |  |  | 3,200,000,000 |  |
Other debt |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Total long-term debt outstanding |  |  |  |  | $ 2,400,000 |  | 3,100,000
Other debt | Minimum |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate, stated percentage |  |  |  |  | 4.40% |  |
Other debt | Maximum |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate, stated percentage |  |  |  |  | 5.30% |  |
Real Estate Mortgages |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Percent of total mortgage debt that is fixed |  |  |  |  | 76.20% |  |
Total long-term debt outstanding |  |  |  |  | $ 611,500,000 |  | 597,700,000
Real Estate Mortgages | Minimum |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate, stated percentage |  |  |  |  | 1.90% |  |
Real Estate Mortgages | Maximum |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate, stated percentage |  |  |  |  | 5.30% |  |
Senior Notes | 5.250% Senior notes due 2025 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate, stated percentage |  |  |  | 5.25% |  |  |
Total long-term debt outstanding |  |  |  |  | $ 300,000,000.0 |  | 300,000,000.0
Aggregate principal amount |  |  |  | $ 300,000,000.0 |  |  |
Redemption percentage price |  |  |  | 100.00% |  |  |
Percentage of principal amount redeemable |  |  |  | 101.00% |  |  |
Senior Notes | 4.625% Senior notes due 2027 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate, stated percentage |  |  | 4.625% |  |  |  |
Total long-term debt outstanding |  |  |  |  | 400,000,000.0 |  | 400,000,000.0
Aggregate principal amount |  |  | $ 400,000,000.0 |  |  |  |
Percentage of principal amount redeemable |  |  | 101.00% |  |  |  |
Senior Notes | 4.375% Senior notes due 2031 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate, stated percentage | 4.375% |  |  |  |  |  |
Total long-term debt outstanding |  |  |  |  | $ 550,000,000.0 |  | 0
Aggregate principal amount | $ 550,000,000.0 |  |  |  |  |  |
Percentage of principal amount redeemable | 101.00% |  |  |  |  |  |
Senior Notes | Option One | 4.625% Senior notes due 2027 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Redemption percentage price |  |  | 100.00% |  |  |  |
Senior Notes | Option One | 4.375% Senior notes due 2031 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Redemption percentage price | 100.00% |  |  |  |  |  |
Senior Notes | Option Two | 4.625% Senior notes due 2027 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Redemption percentage price |  |  | 40.00% |  |  |  |
Senior Notes | Option Two | 4.375% Senior notes due 2031 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Redemption percentage price | 40.00% |  |  |  |  |  |
Finance Lease Obligations | Minimum |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate, stated percentage |  |  |  |  | 1.90% |  |
Finance Lease Obligations | Maximum |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate, stated percentage |  |  |  |  | 8.50% |  |
Used Vehicle Inventory Financing Facility | Line of Credit |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Annual interest rate (in percent) |  |  |  |  | 1.54% |  |
Total long-term debt outstanding |  |  |  |  | $ 0 |  | 149,000,000.0
Used Vehicle Inventory Financing Facility | Line of Credit | LIBOR |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Basis spread on variable rate (in percent) |  |  |  |  | 1.40% |  |
Used Vehicle Inventory Financing Facility | Line of Credit | Credit Facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Option to reallocate commitment, maximum aggregate commitment threshold percentage |  |  |  |  | 16.50% |  |
Revolving Lines of Credit | Line of Credit |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Total long-term debt outstanding |  |  |  |  | $ 39,000,000.0 |  | $ 0
Revolving Lines of Credit | Line of Credit | LIBOR | Minimum |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Basis spread on variable rate (in percent) |  |  |  |  | 1.00% |  |
Revolving Lines of Credit | Line of Credit | LIBOR | Maximum |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Basis spread on variable rate (in percent) |  |  |  |  | 2.00% |  |
Revolving Lines of Credit | Line of Credit | Credit Facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Option to reallocate commitment, maximum aggregate commitment threshold percentage |  |  |  |  | 18.75% |  |
Service Loaner Floor Plan | Line of Credit |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Annual interest rate (in percent) |  |  |  |  | 1.34% |  |
Service Loaner Floor Plan | Line of Credit | Credit Facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Total financing commitment |  |  |  |  | $ 100,000,000 |  |
New Vehicle Floor Plan | Line of Credit |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Annual interest rate (in percent) |  |  |  |  | 1.24% |  |
New Vehicle Floor Plan | Line of Credit | LIBOR |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Basis spread on variable rate (in percent) |  |  |  |  | 1.10% |  |
New Vehicle Floor Plan | Line of Credit | Credit Facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Accordion feature, increase limit |  |  |  |  | $ 400,000,000 |  |
Other Lines of Credit |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Total financing commitment |  |  |  |  | 80,000,000.0 |  |
Long-term line of credit |  |  |  |  | $ 0 |  |
Other Lines of Credit | Maximum |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Annual interest rate (in percent) |  |  |  |  | 5.70% |  |
Other Lines of Credit | Line of Credit |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Annual interest rate (in percent) |  |  |  |  | 1.14% |  |
Securitization Facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Total financing commitment |  |  |  |  |  | $ 150,000,000.0 |
Long-term debt |  |  |  |  | $ 39,000,000.0 |  |
Real Estate Backed Credit Facility Member |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Total financing commitment |  | $ 251,500,000 |  |  |  |  |
Debt term |  | 5 years |  |  |  |  |
Debt instrument, number of counter-parties | financial_institution |  | 8 |  |  |  |  |
Real Estate Backed Credit Facility Member | LIBOR |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Basis spread on variable rate (in percent) |  | 0.75% |  |  |  |  |
Real Estate Backed Credit Facility Member | LIBOR | Minimum |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Basis spread on variable rate (in percent) |  | 2.00% |  |  |  |  |
Real Estate Backed Credit Facility Member | LIBOR | Maximum |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Basis spread on variable rate (in percent) |  | 2.50% |  |  |  |  |

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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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