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, 2021		Dec. 31, 2020		Dec. 31, 2019
Variable Interest Entity [Line Items]
Consolidated Assets		$ 189,232	[1]	$ 196,434	[1]	$ 175,375
Consolidated Liabilities	[1]	172,192		178,143
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Total Assets Held by Unconsolidated VIEs		7,733
Consolidated Assets		1,698
Consolidated Liabilities		407
Maximum Exposure to Loss		1,698
Limited partnership investments
Variable Interest Entity [Line Items]
Total Assets Held by Unconsolidated VIEs		6,700		4,266
Consolidated Assets		825		629
Consolidated Liabilities		407		285
Maximum Exposure to Loss		825		$ 629
Asset-backed financing SPE
Variable Interest Entity [Line Items]
Total Assets Held by Unconsolidated VIEs		1,033
Consolidated Assets		873
Consolidated Liabilities		0
Maximum Exposure to Loss		$ 873

[1] The following table summarizes assets and liabilities related to our consolidated variable interest entities ("VIEs") at December 31, 2021 and 2020. Assets and liabilities exclude intercompany balances that eliminate in consolidation. See Note 27, "Variable Interest Entities," for additional information. At December 31,20212020(in millions)AssetsLoans$46 $10 Other assets55 79 Total assets$101 $89 LiabilitiesInterest, taxes and other liabilities$9 $10 Total liabilities$9 $10