Derivative Instruments and Hedging Activities (Derivative Instruments Used in Net Investment Hedge Accounting Relationships) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Interest rate contracts | Cash flow hedging
Derivative Instruments, Gain (Loss) [Line Items]
Loss recognized in other comprehensive income (loss)	$ (36,000,000)	$ (23,000,000)	$ (61,000,000)
Foreign exchange contracts | Net investment hedging
Derivative Instruments, Gain (Loss) [Line Items]
(Loss) gain recognized in other comprehensive income (loss)	(3,000,000)	8,000,000	0
Amounts excluded from effectiveness testing	0	0	0
Amounts reclassified from accumulated other comprehensive income	$ 0	$ 0	$ 0