Financial Instruments - Fair Values of Derivative Instruments in Consolidated Balance Sheet (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Derivatives, Fair Value [Line Items]
Asset derivatives	$ 51.5	$ 41.1
Liability derivatives	28.0	36.4
Derivatives designated as hedging instruments:
Derivatives, Fair Value [Line Items]
Asset derivatives	47.1	33.1
Liability derivatives	27.5	34.1
Derivatives designated as hedging instruments: | Other current assets | Interest rate swaps
Derivatives, Fair Value [Line Items]
Asset derivatives	47.1	33.1
Derivatives designated as hedging instruments: | Other current assets | Cross-currency swaps
Derivatives, Fair Value [Line Items]
Asset derivatives	0.0	0.0
Derivatives designated as hedging instruments: | Other accrued & current liabilities | Interest rate swaps
Derivatives, Fair Value [Line Items]
Liability derivatives	0.0	0.0
Derivatives designated as hedging instruments: | Other accrued & current liabilities | Cross-currency swaps
Derivatives, Fair Value [Line Items]
Liability derivatives	27.5	34.1
Derivatives not designated as hedging instruments:
Derivatives, Fair Value [Line Items]
Asset derivatives	4.4	8.0
Liability derivatives	0.5	2.3
Derivatives not designated as hedging instruments: | Other current assets | Foreign exchange forward contracts
Derivatives, Fair Value [Line Items]
Asset derivatives	4.4	8.0
Derivatives not designated as hedging instruments: | Other accrued & current liabilities | Foreign exchange forward contracts
Derivatives, Fair Value [Line Items]
Liability derivatives	$ 0.5	$ 2.3