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, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Not Designated as Hedging Instrument | Foreign Currency Contracts | Selling, General and Administrative Expenses
Derivative Instruments Gain Loss [Line Items]
Gain related to derivatives	$ (0.1)	$ 2.2	$ 1.1	$ (1.5)
Designated as Hedging Instrument | Derivatives Designated as Cash Flow Hedges | Interest Rate Swap Agreements | Interest Expense, Net
Derivative Instruments Gain Loss [Line Items]
Gain related to derivatives	$ 1.0		$ 0.8