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		Mar. 31, 2022		Dec. 31, 2021		Mar. 31, 2021
Variable Interest Entity [Line Items]
Consolidated Assets		$ 177,016	[1]	$ 189,232	[1]	$ 194,856
Consolidated Liabilities	[1]	160,943		172,192
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Total Assets Held by Unconsolidated VIEs		7,632		7,733
Consolidated Assets		1,696		1,698
Consolidated Liabilities		400		407
Maximum Exposure to Loss		1,696		1,698
Limited partnership investments
Variable Interest Entity [Line Items]
Total Assets Held by Unconsolidated VIEs		6,599		6,700
Consolidated Assets		823		825
Consolidated Liabilities		400		407
Maximum Exposure to Loss		823		825
Asset-backed financing SPE
Variable Interest Entity [Line Items]
Total Assets Held by Unconsolidated VIEs		1,033		1,033
Consolidated Assets		873		873
Consolidated Liabilities		0		0
Maximum Exposure to Loss		$ 873		$ 873

[1] The following table summarizes assets and liabilities related to our consolidated variable interest entities ("VIEs") at March 31, 2022 and December 31, 2021. Assets and liabilities exclude intercompany balances that eliminate in consolidation. See Note 17, "Variable Interest Entities," for additional information. March 31, 2022December 31, 2021(in millions)AssetsLoans$128 $46 Other assets51 55 Total assets$179 $101 LiabilitiesInterest, taxes and other liabilities$31 $9 Total liabilities$31 $9