Loans Held for Sale - Summary (Details) - USD ($) $ in Millions		Mar. 31, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for sale	[1]	$ 948	$ 4,217
Commercial loans:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for sale		211	461
Commercial loans: | Business and corporate banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for sale		7	123
Commercial loans: | Global banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for sale		204	338
Consumer loans:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for sale		737	3,756
Consumer loans: | Residential Mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for sale		568	3,082
Consumer loans: | Home Equity Mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for sale		47	275
Consumer loans: | Credit cards
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for sale		17	195
Consumer loans: | Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for sale		$ 105	$ 204

[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