Derivatives - Schedule of Pre-Tax Losses (Gains) Recognized on Derivative Financial Instruments in Condensed Consolidated Statements of Operations (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Not Designated as Hedging Instrument | Foreign Currency Contracts | Selling, General and Administrative Expenses
Derivative Instruments Gain Loss [Line Items]
Losses (gains) related to derivatives	$ (7.4)	$ (0.1)	$ (5.0)	$ 1.1
Designated as Hedging Instrument | Interest Rate Swap Agreements | Interest Expense, Net
Derivative Instruments Gain Loss [Line Items]
Losses (gains) related to derivatives	9.2		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]
Losses (gains) related to derivatives	$ 9.9	$ 1.0	$ 11.2	$ 0.8