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Derivative Instruments and Hedging Activities - Interest Rate Swap Agreements (Detail)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
USD ($)
interest_rate_swap
Dec. 31, 2017
USD ($)
Derivative [Line Items]    
Derivative Asset, Fair Value, Gross Asset $ 9,500 $ 9,800
Derivative Liability, Fair Value, Gross Liability 55,800 86,100
Restricted cash 6,800 $ 22,300
U.S. Dollar-denominated interest rate swaps 1 | LIBOR    
Derivative [Line Items]    
Principal Amount 1,162,476  
Fair Value / Carrying Amount of Asset / (Liability) $ (22,443)  
Weighted-Average Remaining Term (years) 3 years 8 months 12 days  
Fixed Rate Payable 2.90%  
Euro-denominated interest rate swaps | EURIBOR    
Derivative [Line Items]    
Principal Amount $ 86,477  
Fair Value / Carrying Amount of Asset / (Liability) $ (11,092)  
Weighted-Average Remaining Term (years) 4 years 8 months 1 day  
Fixed Rate Payable 3.80%  
Interest Rate Swap Agreements    
Derivative [Line Items]    
Derivative, Number of Instruments Held | interest_rate_swap 2  
Fair Value / Carrying Amount of Asset / (Liability) $ (33,535)