Revenues (Changes) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Changes to contract liabilities
Total contract liabilities, at beginning of period	$ 348	$ 456
Decrease due to recognition of revenues for goods and services	(119)	(149)
Increase due to goods and services transferred over time	99	41
Total contract liabilities, at end of period	$ 328	$ 348