Business Combinations - Computation of Purchase Price and the Assets Acquired Net of Liabilities Assumed (Details) - USD ($) $ in Millions		8 Months Ended		12 Months Ended			20 Months Ended
	May 01, 2023	Dec. 31, 2023	Dec. 31, 2023	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024
Liabilities
Gain on acquisition, after income taxes				$ 0	$ 103	$ 2,775
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		30,285
Loans					153,242		153,242
Core deposit and customer relationship intangibles					1,455		1,455
Indemnification assets - Shared-loss agreements					675		675
Accounts receivable and other assets					6,740		6,740
Total assets acquired					192,397		192,397
Liabilities
Deposits					87,572		87,572
FHLB advances					27,919		27,919
Lending-related commitments					2,614		2,614
Accounts payable and other liabilities					2,792		2,792
Deferred tax liabilities					757		757
Total liabilities assumed					121,654		121,654
Fair value of net assets acquired					70,743		70,743
Gain on acquisition, after income taxes	$ 2,700	$ 63	$ 2,800		103		2,878
Cash acquired from acquisition							680
Consideration transferred for settlement of securities financing transaction					447
Tax-oriented investments acquired					1,200		1,200
Right-of-use assets acquired					683		683
Tax-oriented investment liability assumed					669		669
Lease liabilities assumed					$ 748		$ 748
First Republic | Purchase Money Note
Liabilities
Term of FDIC Purchase Money Note	5 years
Face amount of notes	$ 50,000