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Represents the number of entities newly classified as held for sale.

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Represents the number of franchises disposed of by the entity during the period.

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Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The cash outflow from the repayment of long-term borrowing where a lender is placed in a lien position behind debt having a higher priority of repayment (senior) in case of liquidation of the entity's assets or underlying collateral.

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Interim Financial Statements - Fair Value, Assets Held For Sale, Discontinued Operations (Details) $ in Millions	6 Months Ended
	Jun. 30, 2021 USD ($) entity item	Jun. 30, 2020 entity	Dec. 31, 2020 USD ($)
Fair Value of Financial Instruments
Debt instrument, Carrying Value	$ 1,517.8		$ 1,689.6
Repayments of senior subordinated notes	$ 500.0
Assets Held for Sale and Discontinued Operations
Number of entities newly classified as held for sale \| entity	0	0
5.75% senior subordinated notes due 2022
Fair Value of Financial Instruments
Interest rate (as a percent)	5.50%
3.50% senior subordinated notes due 2025
Fair Value of Financial Instruments
Interest rate (as a percent)	3.50%		3.50%
Debt instrument, Carrying Value	$ 544.0		$ 543.2
Debt instrument, Fair Value	$ 564.1		$ 554.6
3.75% senior subordinated notes due 2029
Fair Value of Financial Instruments
Interest rate (as a percent)	3.75%		3.75%
Debt instrument, Carrying Value	$ 493.9
Debt instrument, Fair Value	498.2
Mortgage facilities
Fair Value of Financial Instruments
Debt instrument, Carrying Value	398.9		$ 458.1
Debt instrument, Fair Value	$ 406.5		$ 474.7
Retail Automotive Franchise \| Disposal group, not discontinued operations
Disposals
Number of franchises disposed \| item	1