Variable Interest Entities - Variable Interests Held by Us and Our Maximum Exposure to Loss Rising From Our Involvements in Those VIEs (Details) - USD ($) $ in Millions		Dec. 31, 2023		Dec. 31, 2022		Dec. 31, 2021
Variable Interest Entity [Line Items]
Consolidated Assets		$ 168,238	[1]	$ 164,655	[1]	$ 189,232
Consolidated Liabilities	[1]	156,599		152,542
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Total Assets Held by Unconsolidated VIEs		7,825		7,388
Consolidated Assets		1,731		1,412
Consolidated Liabilities		327		360
Maximum Exposure to Loss		1,731		1,412
Limited partnership investments
Variable Interest Entity [Line Items]
Total Assets Held by Unconsolidated VIEs		6,718		6,611
Consolidated Assets		793		796
Consolidated Liabilities		327		360
Maximum Exposure to Loss		793		796
Asset-backed financing SPEs
Variable Interest Entity [Line Items]
Total Assets Held by Unconsolidated VIEs		1,107		777
Consolidated Assets		938		616
Consolidated Liabilities		0		0
Maximum Exposure to Loss		$ 938		$ 616

[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