Variable Interest Entities - Summary of Assets and Liabilities Related to Consolidated Variable Interest Entities (Details) - USD ($) $ in Millions		Jun. 30, 2023		Dec. 31, 2022		Jun. 30, 2022
Variable Interest Entity [Line Items]
Consolidated Assets		$ 166,928	[1]	$ 164,655	[1]	$ 171,232
Consolidated Liabilities	[1]	155,271		152,542
Variable interest entities
Variable Interest Entity [Line Items]
Consolidated Assets		226		206
Consolidated Liabilities		35		22
Low income housing limited liability partnership: | Variable interest entities
Variable Interest Entity [Line Items]
Consolidated Assets		28		36
Consolidated Liabilities		27		14
Low income housing limited liability partnership: | Variable interest entities | Other assets
Variable Interest Entity [Line Items]
Consolidated Assets		28		36
Low income housing limited liability partnership: | Variable interest entities | Interest, taxes and other liabilities
Variable Interest Entity [Line Items]
Consolidated Liabilities		27		14
Venture debt financing entity: | Variable interest entities
Variable Interest Entity [Line Items]
Consolidated Assets		198		170
Consolidated Liabilities		8		8
Venture debt financing entity: | Variable interest entities | Other assets
Variable Interest Entity [Line Items]
Consolidated Assets		12		8
Venture debt financing entity: | Variable interest entities | Loans, net
Variable Interest Entity [Line Items]
Consolidated Assets		186		162
Venture debt financing entity: | Variable interest entities | Interest, taxes and other liabilities
Variable Interest Entity [Line Items]
Consolidated Liabilities		$ 8		$ 8

[1] The following table summarizes assets and liabilities related to our consolidated variable interest entities ("VIEs") at June 30, 2023 and December 31, 2022. Assets and liabilities exclude intercompany balances that eliminate in consolidation. See Note 17, "Variable Interest Entities," for additional information. June 30, 2023December 31, 2022(in millions)AssetsLoans, net$186 $162 Other assets40 44 Total assets$226 $206 LiabilitiesInterest, taxes and other liabilities$35 $22 Total liabilities$35 $22