Other Items (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Net Interest and Other Financing [Abstract]
Interest income	$ 15	$ 1	$ 5
Interest expense	(227)	(257)	(279)
Gain on interest rate swaps	19	54	12
Total interest	(193)	(202)	(262)
Other	5	14	6
Net interest and other	$ (188)	$ (188)	$ (256)