Leases (Components of Lease Costs) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Components of lease costs:
Operating lease cost	$ 62	$ 63	$ 54
Short-term lease cost	103	93	15
Variable lease cost	3	3	3
Total lease cost	$ 168	$ 159	$ 72