(Financial Instruments and Hedging Activities - Additional Information) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2021 USD ($)
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Cumulative deferred hedging gain (loss), after tax, included in accumulated other comprehensive income	$ 73.2
Interest Rate Swap
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative, Notional Amount	1,000.0
Intercompany Debt [Member]
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Foreign currency denominated debt designated to hedge investments in certain foreign subsidiaries and affiliates	877.8
Debt [Member]
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Foreign currency denominated debt designated to hedge investments in certain foreign subsidiaries and affiliates	11,600.0
Interest Rate Risk [Member] | Fair Value Hedging [Member]
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative instruments, gain (loss) recognized in income, net	(8.9)
Increase (Decrease) in Fair Value of Interest Rate Fair Value Hedging Instruments	26.9
Royalty Arrangement [Member]
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative, Notional Amount	$ 1,200.0
Period covered by hedge	18 months