Variable Interest Entities and Securitizations - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Variable Interest Entity [Line Items]
Amortization method qualified affordable housing investments, amortization	$ 637	$ 633
Affordable housing tax credits	664	644
Amortization method qualified affordable housing investments	4,900	4,700
Qualified affordable housing investments, commitment	1,800	1,700
Carrying Amount of Assets	455,249	432,381
VIE, reporting entity involvement, maximum loss exposure	5,281	5,157
Unconsolidated
Variable Interest Entity [Line Items]
Carrying Amount of Assets	5,281	5,157
Consolidated
Variable Interest Entity [Line Items]
Carrying Amount of Assets	31,045	26,458
Affordable housing entities
Variable Interest Entity [Line Items]
VIE, reporting entity involvement, maximum loss exposure	4,944	4,774
Affordable housing entities | Unconsolidated
Variable Interest Entity [Line Items]
Carrying Amount of Assets	4,944	4,774
Total assets of the unconsolidated VIE investment funds	12,500	11,900
Affordable housing entities | Consolidated
Variable Interest Entity [Line Items]
Carrying Amount of Assets	261	263
Entities that provide capital to low-income and rural communities
Variable Interest Entity [Line Items]
VIE, reporting entity involvement, maximum loss exposure	0	0
Entities that provide capital to low-income and rural communities | Unconsolidated
Variable Interest Entity [Line Items]
Carrying Amount of Assets	0	0
Entities that provide capital to low-income and rural communities | Consolidated
Variable Interest Entity [Line Items]
Carrying Amount of Assets	2,301	2,074
Other
Variable Interest Entity [Line Items]
VIE, reporting entity involvement, maximum loss exposure	337	383
Other | Unconsolidated
Variable Interest Entity [Line Items]
Carrying Amount of Assets	337	383
Other | Consolidated
Variable Interest Entity [Line Items]
Carrying Amount of Assets	$ 0	$ 0