Derivative Financial Instruments - Balance Sheet Offsetting, Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Derivative Liabilities
Gross Amounts of Recognized Liabilities	$ 424	$ 238
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Position	424	238
Financial Instruments (Collateral)	(237)	(101)
Cash Collateral Pledged	(53)	(61)
Net Amount	134	76
Repurchase, securities lending, and similar arrangements
Securities Sold under Agreements to Repurchase, Gross	50	61
Securities Sold under Agreements to Repurchase, Asset	0	0
Securities Sold under Agreements to Repurchase	50	61
Financial Instruments (Collateral)	0	0
Cash Collateral Pledged	0	0
Net Amount	50	61
Total
Gross Amounts of Recognized Liabilities	474	299
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Position	474	299
Financial Instruments (Collateral)	(237)	(101)
Cash Collateral Pledged	(53)	(61)
Net Amount	184	137
Foreign exchange contracts
Derivative Liabilities
Gross Amounts of Recognized Liabilities	263	128
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Position	263	128
Derivative Liability, Not Offset, Policy Election Deduction	(97)	(55)
Cash Collateral Pledged	(36)	(4)
Net Amount	130	69
Client foreign currency options
Derivative Liabilities
Gross Amounts of Recognized Liabilities	8	9
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Position	8	9
Derivative Liability, Not Offset, Policy Election Deduction	(4)	(2)
Cash Collateral Pledged	0	0
Net Amount	4	7
Client interest rate derivatives
Derivative Liabilities
Gross Amounts of Recognized Liabilities	153	101
Gross Amounts offset in the Statement of Financial Position	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Position	153	101
Derivative Liability, Not Offset, Policy Election Deduction	(136)	(44)
Cash Collateral Pledged	(17)	(57)
Net Amount	$ 0	$ 0