Variable Interest Entities - Summary of Assets and Liabilities Related to Consolidated Variable Interest Entities (Details) - USD ($) $ in Millions		Sep. 30, 2022		Dec. 31, 2021		Sep. 30, 2021
Variable Interest Entity [Line Items]
Consolidated Assets		$ 169,340	[1]	$ 189,232	[1]	$ 201,150
Consolidated Liabilities	[1]	155,307		172,192
Variable interest entities
Variable Interest Entity [Line Items]
Consolidated Assets		171		101
Consolidated Liabilities		26		9
Low income housing limited liability partnership: | Variable interest entities
Variable Interest Entity [Line Items]
Consolidated Assets		40		54
Consolidated Liabilities		21		7
Low income housing limited liability partnership: | Variable interest entities | Other assets
Variable Interest Entity [Line Items]
Consolidated Assets		40		54
Low income housing limited liability partnership: | Variable interest entities | Interest, taxes and other liabilities
Variable Interest Entity [Line Items]
Consolidated Liabilities		21		7
Venture debt financing entity: | Variable interest entities
Variable Interest Entity [Line Items]
Consolidated Assets		131		47
Consolidated Liabilities		5		2
Venture debt financing entity: | Variable interest entities | Other assets
Variable Interest Entity [Line Items]
Consolidated Assets		4		1
Venture debt financing entity: | Variable interest entities | Loans
Variable Interest Entity [Line Items]
Consolidated Assets		127		46
Venture debt financing entity: | Variable interest entities | Interest, taxes and other liabilities
Variable Interest Entity [Line Items]
Consolidated Liabilities		$ 5		$ 2

[1] The following table summarizes assets and liabilities related to our consolidated variable interest entities ("VIEs") at September 30, 2022 and December 31, 2021. Assets and liabilities exclude intercompany balances that eliminate in consolidation. See Note 17, "Variable Interest Entities," for additional information. September 30, 2022December 31, 2021(in millions)AssetsLoans$127 $46 Other assets44 55 Total assets$171 $101 LiabilitiesInterest, taxes and other liabilities$26 $9 Total liabilities$26 $9