Variable Interest Entities - Summary of Assets and Liabilities Related to Consolidated Variable Interest Entities (Details) - USD ($) $ in Millions		Mar. 31, 2024		Dec. 31, 2023		Mar. 31, 2023
Variable Interest Entity [Line Items]
Other assets	[1]	$ 7,332		$ 6,490
Interest, taxes and other liabilities	[1]	4,139		3,256
Consolidated Assets		166,966	[1]	168,238	[1]	$ 166,550
Consolidated Liabilities	[1]	155,210		156,599
Variable interest entities
Variable Interest Entity [Line Items]
Other assets		21		23
Interest, taxes and other liabilities		28		17
Consolidated Assets		21		23
Consolidated Liabilities		28		17
Low income housing limited liability partnership: | Variable interest entities
Variable Interest Entity [Line Items]
Other assets		21		23
Interest, taxes and other liabilities		$ 28		$ 17

[1] The following table summarizes assets and liabilities related to our consolidated variable interest entities ("VIEs") at March 31, 2024 and December 31, 2023. Assets and liabilities exclude intercompany balances that eliminate in consolidation. See Note 15, "Variable Interest Entities," for additional information. March 31, 2024December 31, 2023(in millions)AssetsOther assets$21 $23 Total assets$21 $23 LiabilitiesInterest, taxes and other liabilities$28 $17 Total liabilities$28 $17