Business Combinations - Computation of Purchase Price and the Assets Acquired Net of Liabilities Assumed (Details) - First Republic - USD ($) $ in Millions		11 Months Ended
	May 01, 2023	Mar. 31, 2024
Purchase price consideration
Amounts paid/due to the FDIC, net of cash acquired		$ 13,566
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		67,876
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		6,595
Total assets acquired		192,252
Liabilities
Deposits		87,572
FHLB advances		27,919
Lending-related commitments		2,614
Accounts payable and other liabilities		2,793
Deferred tax liabilities		719
Total liabilities assumed		121,617
Fair value of net assets acquired		70,635
Estimated gain on acquisition, after income taxes	$ 2,700	2,759
Cash paid at acquisition		10,600
Amounts payable		3,600
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
Purchase Money Note
Liabilities
Term of FDIC Purchase Money Note	5 years
Face amount of notes	$ 50,000