Offsetting Assets and Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Gross amounts recognized
Federal funds sold and security resell agreements	$ 2,273	$ 2,133
Derivatives (included in other assets)	152	219
Total assets	2,425	2,352
Federal funds purchased and other short-term borrowings	1,018	903
Derivatives (included in other liabilities)	295	51
Total liabilities	1,313	954
Gross amounts offset in the balance sheet
Federal funds sold and security resell agreements	0	0
Derivatives (included in other assets)	0	0
Total assets	0	0
Federal funds purchased and other short-term borrowings	0	0
Derivatives (included in other liabilities)	0	0
Total liabilities	0	0
Net amounts presented in the balance sheet
Federal funds sold and security resell agreements	2,273	2,133
Derivatives (included in other assets)	152	219
Total assets	2,425	2,352
Federal funds purchased and other short-term borrowings	1,018	903
Derivatives (included in other liabilities)	295	51
Total liabilities	1,313	954
Gross amounts not offset in the balance sheet, Financial Instruments
Federal funds sold and security resell agreements	0	0
Derivatives (included in other assets)	(9)	(16)
Total assets	(9)	(16)
Federal funds purchased and other short-term borrowings	0	0
Derivatives (included in other liabilities)	(9)	(16)
Total liabilities	(9)	(16)
Gross amounts not offset in the balance sheet, Cash collateral received/ pledged
Federal funds sold and security resell agreements	0	0
Derivatives (included in other assets)	(40)	(7)
Total assets	(40)	(7)
Federal funds purchased and other short-term borrowings	0	0
Derivatives (included in other liabilities)	0	(1)
Total liabilities	0	(1)
Net amount
Federal funds sold and security resell agreements	2,273	2,133
Derivatives (included in other assets)	103	196
Total assets	2,376	2,329
Federal funds purchased and other short-term borrowings	1,018	903
Derivatives (included in other liabilities)	286	34
Total liabilities	$ 1,304	$ 937