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Other Short-Term Borrowings (Details) - USD ($)
$ in Millions
Jun. 30, 2022
Dec. 31, 2021
Short-Term Debt [Abstract]    
FHLB advances $ 6,250 $ 0
Securities sold under repurchase agreements 449 544
Derivative collateral 358 436
Other short-term borrowings $ 7,057 $ 980