Off-balance Sheet Lending-related Financial Instruments, Guarantees, and Other Commitments (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Total lending-related commitments/ contractual amount	$ 1,497,847	$ 1,326,782
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring in 1 year or less	1,078,159
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring after 1 year through 3 years	193,224
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring after 3 years through 5 years	189,249
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring after 5 years	37,215
Off-balance sheet lending-related financial commitments, Carrying value	4,139	2,817
Total consumer
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Total lending-related commitments/ contractual amount	961,061	854,802
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring in 1 year or less	934,822
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring after 1 year through 3 years	7,334
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring after 3 years through 5 years	6,493
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring after 5 years	12,412
Off-balance sheet lending-related financial commitments, Carrying value	826	75
Total consumer, excluding credit card
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Total lending-related commitments/ contractual amount	45,403	33,518
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring in 1 year or less	19,164
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring after 1 year through 3 years	7,334
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring after 3 years through 5 years	6,493
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring after 5 years	12,412
Off-balance sheet lending-related financial commitments, Carrying value	826	75
Residential real estate
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Total lending-related commitments/ contractual amount	30,125	21,287
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring in 1 year or less	6,917
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring after 1 year through 3 years	7,175
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring after 3 years through 5 years	6,493
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring after 5 years	9,540
Off-balance sheet lending-related financial commitments, Carrying value	678	75
Residential real estate | First Republic
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet lending-related financial commitments, Carrying value	630
Auto and other
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Total lending-related commitments/ contractual amount	15,278	12,231
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring in 1 year or less	12,247
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring after 1 year through 3 years	159
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring after 3 years through 5 years	0
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring after 5 years	2,872
Off-balance sheet lending-related financial commitments, Carrying value	148	0
Auto and other | First Republic
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet lending-related financial commitments, Carrying value	148
Credit card
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Total lending-related commitments/ contractual amount	915,658	821,284
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring in 1 year or less	915,658
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring after 1 year through 3 years	0
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring after 3 years through 5 years	0
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring after 5 years	0
Off-balance sheet lending-related financial commitments, Carrying value	0	0
Total wholesale
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Total lending-related commitments/ contractual amount	536,786	471,980
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring in 1 year or less	143,337
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring after 1 year through 3 years	185,890
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring after 3 years through 5 years	182,756
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring after 5 years	24,803
Off-balance sheet lending-related financial commitments, Carrying value	3,313	2,742
Other unfunded commitments to extend credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Total lending-related commitments/ contractual amount	503,526	440,407
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring in 1 year or less	125,478
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring after 1 year through 3 years	175,190
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring after 3 years through 5 years	179,046
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring after 5 years	23,812
Off-balance sheet lending-related financial commitments, Carrying value	2,797	2,328
Off balance sheet lending related financial instruments guarantees and other commitments - supplemental information [Abstract]
Risk participations for other unfunded commitments to extend credit	88	71
Other unfunded commitments to extend credit | First Republic
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet lending-related financial commitments, Carrying value	1,100
Standby letters of credit and other financial guarantees
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Total lending-related commitments/ contractual amount	28,872	27,439
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring in 1 year or less	13,775
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring after 1 year through 3 years	10,478
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring after 3 years through 5 years	3,628
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring after 5 years	991
Off-balance sheet lending-related financial commitments, Carrying value	479	408
Other guarantees and commitments, Carrying value	369	326
Off balance sheet lending related financial instruments guarantees and other commitments - supplemental information [Abstract]
Risk participations for standby letters of credit and other financial guarantees	8,200	8,200
Other letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Total lending-related commitments/ contractual amount	4,388	4,134
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring in 1 year or less	4,084
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring after 1 year through 3 years	222
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring after 3 years through 5 years	82
Off-balance sheet lending-related financial commitments, Contractual amount, Expiring after 5 years	0
Off-balance sheet lending-related financial commitments, Carrying value	37	6
Other guarantees and commitments, Carrying value	0	0
Off balance sheet lending related financial instruments guarantees and other commitments - supplemental information [Abstract]
Risk participations for other letters of credit	589	512
Securities lending indemnification agreements and guarantees
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Other guarantees and commitments, Contractual amount	283,664	283,386
Other guarantees and commitments, Contractual amount, Expiring in 1 year or less	283,664
Other guarantees and commitments, Contractual amount, Expiring after 1 year through 3 years	0
Other guarantees and commitments, Contractual amount, Expiring after 3 years through 5 years	0
Other guarantees and commitments, Contractual amount, Expiring after 5 years	0
Other guarantees and commitments, Carrying value	0	0
Off balance sheet lending related financial instruments guarantees and other commitments - supplemental information [Abstract]
Indemnification agreement securities lending guarantees collateral held in support of	300,300	298,500
Derivatives qualifying as guarantees
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Other guarantees and commitments, Contractual amount	54,562	59,180
Other guarantees and commitments, Contractual amount, Expiring in 1 year or less	1,693
Other guarantees and commitments, Contractual amount, Expiring after 1 year through 3 years	364
Other guarantees and commitments, Contractual amount, Expiring after 3 years through 5 years	11,657
Other guarantees and commitments, Contractual amount, Expiring after 5 years	40,848
Other guarantees and commitments, Carrying value	89	649
Unsettled resale and securities borrowed agreements
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Other guarantees and commitments, Contractual amount	95,106	116,975
Other guarantees and commitments, Contractual amount, Expiring in 1 year or less	94,920
Other guarantees and commitments, Contractual amount, Expiring after 1 year through 3 years	186
Other guarantees and commitments, Contractual amount, Expiring after 3 years through 5 years	0
Other guarantees and commitments, Contractual amount, Expiring after 5 years	0
Other guarantees and commitments, Carrying value	0	(2)
Unsettled repurchase and securities loaned agreements
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Other guarantees and commitments, Contractual amount	60,724	66,407
Other guarantees and commitments, Contractual amount, Expiring in 1 year or less	60,170
Other guarantees and commitments, Contractual amount, Expiring after 1 year through 3 years	554
Other guarantees and commitments, Contractual amount, Expiring after 3 years through 5 years	0
Other guarantees and commitments, Contractual amount, Expiring after 5 years	0
Other guarantees and commitments, Carrying value	0	(7)
Mortgage repurchase liability
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loan sale and securitization-related indemnifications, Mortgage repurchase liability, Carrying value	76	76
Loans sold with recourse
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loan sale and securitization-related indemnifications, Loans sold with recourse, Contractual amount	803	820
Loan sale and securitization-related indemnifications, Loans sold with recourse, Carrying value	24	28
Exchange & clearing house guarantees and commitments
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Other guarantees and commitments, Contractual amount	265,887	191,068
Other guarantees and commitments, Contractual amount, Expiring in 1 year or less	265,887
Other guarantees and commitments, Contractual amount, Expiring after 1 year through 3 years	0
Other guarantees and commitments, Contractual amount, Expiring after 3 years through 5 years	0
Other guarantees and commitments, Contractual amount, Expiring after 5 years	0
Other guarantees and commitments, Carrying value	0	0
Other guarantees and commitments
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Other guarantees and commitments, Contractual amount	15,074	8,634
Other guarantees and commitments, Contractual amount, Expiring in 1 year or less	9,216
Other guarantees and commitments, Contractual amount, Expiring after 1 year through 3 years	1,516
Other guarantees and commitments, Contractual amount, Expiring after 3 years through 5 years	314
Other guarantees and commitments, Contractual amount, Expiring after 5 years	4,028
Other guarantees and commitments, Carrying value	$ 38	$ 53
Days Past Due, 60 or More | Credit card
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Line of credit close criteria, period past due	60 days