Borrowings - Schedule of Short-term Borrowings (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Debt Disclosure [Abstract]
Securities sold under customer repurchase agreements	$ 436	$ 589
Notes payable to FHLB of Atlanta at overnight SOFR plus spreads ranging from to	1,750	0
Total short-term borrowings	$ 2,186	$ 589
Minimum | Short-Term Notes Payable | Secured Overnight Financing Rate (SOFR)
Short-term Debt [Line Items]
Basis spread on variable rate	0.19%	0.19%
Maximum | Short-Term Notes Payable | Secured Overnight Financing Rate (SOFR)
Short-term Debt [Line Items]
Basis spread on variable rate	0.20%	0.20%