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Derivatives - Net Gains (Losses) with Respect to Derivative Instruments Not Designated as Hedging Instruments (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Derivative Instruments, Gain (Loss) [Line Items]    
Gains (losses) on derivatives instruments $ 26,327 $ (4,948)
Forward Foreign Currency Exchange Rate Contracts [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Gains (losses) on derivatives not designated as hedging instruments 1,906 6,818
LFI and Other Similar Deferred Compensation Arrangements [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Gains (losses) on derivatives not designated as hedging instruments 14,323 (7,487)
LGAC Warrants [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Gains (losses) on derivatives not designated as hedging instruments 3,910  
Total Return Swaps and Other [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Gains (losses) on derivatives not designated as hedging instruments $ 6,188 $ (4,279)