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Risks Arising from Financial Instruments - Summary of Interest Expense Recognized on Unhedged and Hedged Financial Liabilities (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disclosure of detailed information about hedging instruments [line items]      
Interest expense $ (3,131) $ (3,294) $ (3,560)
Interest Rate Risk [Member]      
Disclosure of detailed information about hedging instruments [line items]      
Interest expense (3,705) (3,597) (3,684)
Interest Rate Risk [Member] | Financial Liabilities at Amortised Cost, Class [Member] | Not Designated in Hedging Relationship [Member]      
Disclosure of detailed information about hedging instruments [line items]      
Interest expense (3,722) (3,641) (3,836)
Interest Rate Risk [Member] | Fair value hedges [member] | Hedged Item [Member]      
Disclosure of detailed information about hedging instruments [line items]      
Interest expense (22) (20) (6)
Interest Rate Risk [Member] | Cash flow hedges [member] | Hedged Item [Member]      
Disclosure of detailed information about hedging instruments [line items]      
Interest expense 28 24 17
Interest Rate Risk [Member] | Net investment hedges [member] | Hedging Instrument [Member]      
Disclosure of detailed information about hedging instruments [line items]      
Interest expense 10 (1) 0
Interest Rate Risk [Member] | Economic Hedges [Member] | Hedged Item [Member]      
Disclosure of detailed information about hedging instruments [line items]      
Interest expense $ 0 $ 42 $ 141