Fair Value Disclosure Fair Value Disclosure - Amounts Recorded on Balance Sheet Related to Cumulative Basis Adjustments (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest Expense	$ (263.4)	$ (214.0)	$ (204.0)
Other Nonoperating Income (Expense)	(9.4)	(27.0)	(3.7)
Operating Lease, Expense	(36.0)	(36.1)	(39.2)
Cash Flow Hedging [Member] | Interest Rate Contract [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest Expense	1.6	1.7	1.9
Cash Flow Hedging [Member] | Foreign Exchange Contract [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Nonoperating Income (Expense)	(3.7)	5.7	$ 12.0
Recourse Debt [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets/(Liabilities)	(8.0)	(11.6)
Carrying Amount of the Hedged Assets/(Liabilities)	$ (196.8)	$ (195.2)