Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments and Hedging Activities - Additional Information (Detail)

v3.5.0.2
Derivative Instruments and Hedging Activities - Additional Information (Detail) - USD ($)
$ in Millions
 9 Months Ended 12 Months Ended
Sep. 30, 2016
Dec. 31, 2015
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative asset fair value $ 4.0 $ 6.8
Derivative liability fair value 2.3 6.7
Foreign exchange currency contracts [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative aggregate notional amounts 299.1  
Derivative asset fair value 4.0 6.8
Derivative liability fair value 2.3 6.7
Foreign exchange currency contracts [Member] | Derivatives designated as cash flow hedging instruments [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative aggregate notional amounts 92.7 112.8
Derivative asset fair value 2.5 4.2
Derivative liability fair value $ 0.8 $ 0.5
Freestanding derivatives [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative average remaining maturity period 1 month 2 months
Maximum [Member] | Foreign exchange currency contracts [Member] | Derivatives designated as cash flow hedging instruments [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative maximum remaining maturity period 15 months  
Maximum [Member] | Foreign exchange forward contracts [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative maximum remaining maturity period 12 months 12 months