Financial Instruments - Fair Values of Derivative Instruments in Consolidated Balance Sheet (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Derivatives, Fair Value [Line Items]
Asset derivatives	$ 54.7	$ 12.0
Liability derivatives	2.3	0.7
Derivatives designated as hedging instruments
Derivatives, Fair Value [Line Items]
Asset derivatives	54.1	10.1
Liability derivatives	0.0	0.0
Derivatives designated as hedging instruments | Swap derivative assets | Interest rate Swaps
Derivatives, Fair Value [Line Items]
Asset derivatives	52.4	10.1
Derivatives designated as hedging instruments | Swap derivative assets | Cross-currency swaps
Derivatives, Fair Value [Line Items]
Asset derivatives	1.7	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	0.0	0.0
Derivatives not designated as hedging instruments
Derivatives, Fair Value [Line Items]
Asset derivatives	0.6	1.9
Liability derivatives	2.3	0.7
Derivatives not designated as hedging instruments | Other accrued & current liabilities | Foreign exchange forward contracts
Derivatives, Fair Value [Line Items]
Liability derivatives	2.3	0.7
Derivatives not designated as hedging instruments | Other current assets | Foreign exchange forward contracts
Derivatives, Fair Value [Line Items]
Asset derivatives	$ 0.6	$ 1.9