Financial Instruments and Risk Management (Effect of Derivative Instruments on the Condensed Consolidated Balance Sheets Fair Values of Derivative Instruments Derivatives Not Designated As Hedging Instrument) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Derivatives, Fair Value [Line Items]
Fair value of financial instruments	$ 142.4		$ 142.4		$ 261.6
Fair value of financial instruments	382.9		382.9		125.8
Net other comprehensive (loss) earnings, before tax	123.5	$ (18.2)	421.5	$ (169.4)
Gains and Losses on Net Investment Hedges
Derivatives, Fair Value [Line Items]
Net other comprehensive (loss) earnings, before tax	(355.2)		(528.9)	$ 237.5
Not Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Fair value of financial instruments	138.4		138.4		198.3
Fair value of financial instruments	301.0		301.0		125.8
Not Designated as Hedging Instruments | Prepaid expenses and other current assets | Foreign currency forward contracts
Derivatives, Fair Value [Line Items]
Fair value of financial instruments	138.4		138.4		198.3
Not Designated as Hedging Instruments | Other current liabilities | Foreign currency forward contracts
Derivatives, Fair Value [Line Items]
Fair value of financial instruments	301.0		301.0		125.8
Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Fair value of financial instruments	4.0		4.0		63.3
Fair value of financial instruments	81.9		81.9		0.0
Designated as Hedging Instrument | Prepaid expenses and other current assets | Interest rate swaps
Derivatives, Fair Value [Line Items]
Fair value of financial instruments	0.1		0.1		24.1
Designated as Hedging Instrument | Prepaid expenses and other current assets | Foreign exchange forward contracts
Derivatives, Fair Value [Line Items]
Fair value of financial instruments	3.9		3.9		39.2
Designated as Hedging Instrument | Other current liabilities | Interest rate swaps
Derivatives, Fair Value [Line Items]
Fair value of financial instruments	52.7		52.7		0.0
Designated as Hedging Instrument | Other current liabilities | Foreign exchange forward contracts
Derivatives, Fair Value [Line Items]
Fair value of financial instruments	23.3		23.3		0.0
Designated as Hedging Instrument | Other long-term obligations | Foreign exchange forward contracts
Derivatives, Fair Value [Line Items]
Fair value of financial instruments	$ 5.9		$ 5.9		$ 0.0