XML 85 R74.htm IDEA: XBRL DOCUMENT v3.19.2
Derivatives and Hedging Activity - Summary of Notional and Fair Values of Derivative Instruments (Parenthetical) (Detail) - Foreign Exchange Contracts [Member] - USD ($)
$ in Millions
Jun. 30, 2019
Dec. 31, 2018
Call Options [Member]    
Derivatives, Fair Value [Line Items]    
Foreign exchange derivative contracts $ 215.0 $ 276.4
Put Options [Member]    
Derivatives, Fair Value [Line Items]    
Foreign exchange derivative contracts 215.0 276.4
Forward Contracts [Member]    
Derivatives, Fair Value [Line Items]    
Foreign exchange derivative contracts 27.2 23.1
Forward Contracts [Member] | Call Options [Member]    
Derivatives, Fair Value [Line Items]    
Foreign exchange derivative contracts $ 63.2 $ 72.9