Other Short-Term Borrowings (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Short-Term Debt [Abstract]
FHLB advances	$ 6,800	$ 4,300
Securities sold under repurchase agreements	330	388
Derivative collateral	208	124
Other borrowed money	26	26
Other short-term borrowings	$ 7,364	$ 4,838