Derivative Instruments and Hedging Activities (Gain (loss) recorded in income) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Derivative Instruments, Gain (Loss) [Line Items]
Total income statement impact	$ 16	$ 14	$ (6)
Interest rate swaps
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives	(79)	(30)
Hedged items	79	30
Total income statement impact	0	0
Asset hedges: Pay-fixed interest rate swaps 1
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives	224	23
Hedged items	(225)	(23)
Total income statement impact	$ (1)	$ 0