Loans Held for Sale - Summary (Details) - USD ($) $ in Millions		Mar. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for sale	[1]	$ 453	$ 339
Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for sale		453	339
Commercial loans | Global banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for sale		453	339
Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for sale		0	0
Consumer loans | Residential mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for sale		$ 0	$ 0

[1] The following table summarizes assets and liabilities related to our consolidated variable interest entities ("VIEs") at March 31, 2024 and December 31, 2023. Assets and liabilities exclude intercompany balances that eliminate in consolidation. See Note 15, "Variable Interest Entities," for additional information. March 31, 2024December 31, 2023(in millions)AssetsOther assets$21 $23 Total assets$21 $23 LiabilitiesInterest, taxes and other liabilities$28 $17 Total liabilities$28 $17