Derivatives - Schedule of Pre-Tax (Gains) Losses Recognized on Derivative Financial Instruments in Condensed Consolidated Statements of Operations (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Not Designated as Hedging Instrument | Foreign Currency Contracts | Selling, General and Administrative Expenses
Derivative Instruments Gain Loss [Line Items]
(Gains) losses related to derivatives	$ (1.3)	$ (6.3)	$ (6.4)	$ (5.2)
Designated as Hedging Instrument | Interest Rate Swap Agreements | Interest Expense, Net
Derivative Instruments Gain Loss [Line Items]
(Gains) losses related to derivatives			9.2
Designated as Hedging Instrument | Derivatives Designated as Cash Flow Hedges | Interest Rate Swap Agreements | Interest Expense, Net
Derivative Instruments Gain Loss [Line Items]
(Gains) losses related to derivatives	$ 0.3	$ 1.3	$ 11.5	$ 2.1