XML 117 R103.htm IDEA: XBRL DOCUMENT v3.10.0.1
Derivatives and Hedging Activity - Summary of Notional and Fair Values of Derivative Instruments (Detail) - USD ($)
Dec. 31, 2018
Dec. 31, 2017
Derivatives, Fair Value [Line Items]    
Notional Amount $ 901,400,000 $ 218,700,000
Derivatives Assets 9,600,000 10,300,000
Derivative Liabilities 25,800,000 2,900,000
Interest Rate Contracts [Member]    
Derivatives, Fair Value [Line Items]    
Notional Amount 850,000,000 200,000,000
Derivatives Assets 3,000,000 2,200,000
Derivative Liabilities 13,000,000  
Foreign Exchange Contracts [Member]    
Derivatives, Fair Value [Line Items]    
Notional Amount 51,400,000 18,700,000
Derivatives Assets 6,600,000 8,100,000
Derivative Liabilities $ 12,800,000 $ 2,900,000