Financial Instruments (Interest Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Debt Disclosure [Abstract]
Interest expense, net of capitalized interest	$ 239	$ 221	$ 224
Capitalized interest expense	$ 27	$ 21	$ 20