Derivatives and Hedging Activities - Narrative (Detail) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Derivative [Line Items]
Net gain (loss) to be reclassified during next 12 months	$ 33,000,000.0	$ 16,300,000
Designated as hedging instruments: | U.S. Dollar to Euro cross-currency interest rate swap
Derivative [Line Items]
Derivative, notional amount		750,000,000.0
Not designated as hedging instruments | Foreign currency forward contracts
Derivative [Line Items]
Derivative, notional amount	4,200,000,000	2,500,000,000
Net investment hedges | Designated as hedging instruments:
Derivative [Line Items]
Derivative, notional amount	4,245,100,000	4,078,700,000
Cash flow hedges | Foreign currency forward and option contracts (included component)
Derivative [Line Items]
Derivative, notional amount	985,700,000	$ 824,800,000
Cash flow hedges | Interest rate locks
Derivative [Line Items]
Derivative, notional amount	$ 1,200,000,000