Deposits - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020		Dec. 31, 2019
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Deposits	$ 143,032	$ 145,150		$ 119,693
Deposits held for sale	8,750	0	[1]
Gain on extinguishment of time deposits		12
Overdraft deposits	345	392
Other Expense
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
FDIC assessment fees	63	71		$ 24
Deposits
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Deposits, Fair Value Disclosure	$ 2,749	$ 4,155

[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