Quarterly report pursuant to Section 13 or 15(d)

Notional Amounts of Outstanding Derivative Positions (Detail)

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Notional Amounts of Outstanding Derivative Positions (Detail)
€ in Millions, £ in Millions, $ in Millions, $ in Millions, $ in Millions
Mar. 31, 2021
EUR (€)
Mar. 31, 2021
GBP (£)
Mar. 31, 2021
CAD ($)
Mar. 31, 2021
HKD ($)
Mar. 31, 2021
USD ($)
Dec. 31, 2020
EUR (€)
Dec. 31, 2020
GBP (£)
Dec. 31, 2020
CAD ($)
Dec. 31, 2020
HKD ($)
Dec. 31, 2020
USD ($)
Fixed to Floating Interest Rate Swaps                    
Derivative [Line Items]                    
Derivative, notional amount         $ 1,000         $ 3,250
Floating to Fixed Interest Rate Swaps                    
Derivative [Line Items]                    
Derivative, notional amount         $ 28         $ 778
Foreign Exchange Contracts | Euro Member Countries, Euro                    
Derivative [Line Items]                    
Derivative, notional amount | € € 3,885         € 4,197        
Foreign Exchange Contracts | United Kingdom, Pounds                    
Derivative [Line Items]                    
Derivative, notional amount | £   £ 1,346         £ 1,400      
Foreign Exchange Contracts | Canada, Dollars                    
Derivative [Line Items]                    
Derivative, notional amount     $ 1,497         $ 1,576    
Foreign Exchange Contracts | Hong Kong, Dollars                    
Derivative [Line Items]                    
Derivative, notional amount       $ 3,352         $ 3,717