Variable Interest Entities - Summary of Assets and Liabilities Related to Consolidated Variable Interest Entities (Details) - USD ($) $ in Millions		Dec. 31, 2023		Dec. 31, 2022		Dec. 31, 2021
Variable Interest Entity [Line Items]
Other assets	[1]	$ 6,490		$ 6,754
Interest, taxes and other liabilities	[1]	3,256		2,980
Loans, net		58,396	[1]	58,796	[1]	$ 55,417
Consolidated Assets		168,238	[1]	164,655	[1]	$ 189,232
Consolidated Liabilities	[1]	156,599		152,542
Variable interest entities
Variable Interest Entity [Line Items]
Other assets		23		44
Interest, taxes and other liabilities		17		22
Loans, net		0		162
Consolidated Assets		23		206
Consolidated Liabilities		17		22
Low income housing limited liability partnership: | Variable interest entities
Variable Interest Entity [Line Items]
Other assets		23		36
Interest, taxes and other liabilities		17		14
Consolidated Assets		23		36
Consolidated Liabilities		17		14
Venture debt financing entity: | Variable interest entities
Variable Interest Entity [Line Items]
Other assets		0		8
Interest, taxes and other liabilities		0		8
Loans, net		0		162
Consolidated Assets		0		170
Consolidated Liabilities		$ 0		$ 8

[1] The following table summarizes assets and liabilities related to our consolidated variable interest entities ("VIEs") at December 31, 2023 and 2022. Assets and liabilities exclude intercompany balances that eliminate in consolidation. See Note 27, "Variable Interest Entities," for additional information. At December 31,20232022(in millions)AssetsLoans, net$— $162 Other assets23 44 Total assets$23 $206 LiabilitiesInterest, taxes and other liabilities$17 $22 Total liabilities$17 $22