Derivative Instruments and Hedging Activities (Derivative Instruments Used in Net Investment Hedge Accounting Relationships) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Interest rate contracts | Cash flow hedging
Derivative Instruments, Gain (Loss) [Line Items]
(Loss) gain recognized in other comprehensive income, cash flow hedge, interest rate contracts	$ (61,000,000)	$ 105,000,000	$ (23,000,000)
Foreign exchange contracts | Net investment hedging
Derivative Instruments, Gain (Loss) [Line Items]
(Loss) gain recognized in other comprehensive income, net investment hedge, foreign exchange contracts	0	(4,000,000)	(6,000,000)
Amounts excluded from effectiveness testing	0	0	0
Amounts reclassified from accumulated other comprehensive income	$ 0	$ 0	$ 0