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Settlement and Other Risk Management - Estimated Settlement Exposure (Details) - Guarantee Obligations - USD ($)
$ in Millions
Mar. 31, 2023
Dec. 31, 2022
Risks Inherent in Servicing Assets and Servicing Liabilities    
Gross settlement exposure $ 64,833 $ 64,885
Risk mitigation arrangements applied to settlement exposure (9,587) (10,697)
Net settlement exposure $ 55,246 $ 54,188