Financial Instruments (Interest Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Debt Disclosure [Abstract]
Interest expense, net of capitalized interest	$ 221	$ 224	$ 231
Capitalized interest expense	$ 21	$ 20	$ 17