Derivative Instruments and Hedging Activities - Net Investment Hedge Gains (Losses) Recognized on Condensed Consolidated Statements of Comprehensive Income (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in AOCI	$ 123.0	$ 56.9	$ 312.4	$ 150.9
Euro Notes [Member]
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in AOCI	98.7	40.5	236.4	96.9
Cross-currency Interest Rate Swaps [Member]
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in AOCI	$ 24.3	$ 16.4	$ 76.0	$ 54.0