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Regulation and Capital Adequacy - Non-US Bank Subsidiaries Capital Ratios (Detail) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
GSIB    
Risk Based Capital [Line Items]    
CET1 capital ratio 8.50% 8.30%
Tier 1 capital ratio 10.50% 10.30%
Total capital ratio 13.20% 12.90%
GSIB | Prudential Regulation Authority And Financial Conduct Authority [Member]    
Risk Based Capital [Line Items]    
CET1 capital $ 3,408 $ 3,051
Tier 1 capital 3,408 3,051
Tier 2 capital 826 827
Total capital 4,234 3,878
RWAs $ 17,196 $ 19,263
CET1 capital ratio 19.8 15.8
Tier 1 capital ratio 19.8 15.8
Total capital ratio 24.6 20.1
GSBE    
Risk Based Capital [Line Items]    
CET1 capital ratio 8.70% 7.00%
Tier 1 capital ratio 10.80% 8.50%
Total capital ratio 13.50% 10.50%
GSBE | Amended E.U. Capital Requirements Directive and E.U. Capital Requirements Regulation [Member]    
Risk Based Capital [Line Items]    
CET1 capital $ 6,527 $ 3,991
Tier 1 capital 6,527 3,991
Tier 2 capital 23 24
Total capital 6,550 4,015
RWAs $ 28,924 $ 11,634
CET1 capital ratio 22.6 34.3
Tier 1 capital ratio 22.6 34.3
Total capital ratio 22.6 34.5