Business Combinations - Computation of Purchase Price and the Assets Acquired Net of Liabilities Assumed (Details) - USD ($) $ in Millions		3 Months Ended	6 Months Ended	14 Months Ended
	May 01, 2023	Jun. 30, 2023	Jun. 30, 2023	Jun. 30, 2024
Liabilities
Gain on acquisition, after income taxes		$ 2,712	$ 2,712
First Republic
Purchase price consideration
Amounts paid/due to the FDIC, net of cash acquired				$ 13,555
Purchase Money Note (at fair value)				48,848
Settlement of First Republic deposit and other related party transactions				5,447
Contingent consideration - Shared-loss agreements				15
Purchase price consideration				67,865
Assets
Securities				30,285
Loans				153,242
Core deposit and customer relationship intangibles				1,455
Indemnification assets - Shared-loss agreements				675
Accounts receivable and other assets				6,740
Total assets acquired				192,397
Liabilities
Deposits				87,572
FHLB advances				27,919
Lending-related commitments				2,614
Accounts payable and other liabilities				2,792
Deferred tax liabilities				757
Total liabilities assumed				121,654
Fair value of net assets acquired				70,743
Gain on acquisition, after income taxes	$ 2,700			2,878
Cash acquired from acquisition				680
Consideration transferred for settlement of securities financing transaction				447
Tax-oriented investments				1,200
Right-of-use assets acquired				683
Tax-oriented investment liability				669
Lease liabilities assumed				$ 748
First Republic | Purchase Money Note
Liabilities
Term of FDIC Purchase Money Note	5 years
Face amount of notes	$ 50,000