Other Liabilities - Schedule of Other Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Other Liabilities Disclosure [Abstract]
Fair value of derivative financial instruments	$ 825	$ 486
Lease liabilities	368	352
Accrued expenses and accounts payable	391	275
Commitments to fund tax credit investments	926	295
Deferred taxes	3,147	286
ACL for unfunded commitments	335	106
Incentive plan liabilities	369	267
Accrued interest payable	121	57
Other	879	464
Total other liabilities	$ 7,361	$ 2,588