Leases (Schedule of Total Lease Cost) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Operating lease cost		$ 22	$ 25	$ 10
Short-term lease cost	[1]	141	89	45
Financing lease cost:
Amortization of right-of-use assets		8	8	8
Interest on lease liabilities		11	11	11
Variable lease cost		0	(4)
Lease income		(8)	(8)	(8)
Net lease cost		$ 173	$ 121	$ 66

[1] Short-term lease cost excludes leases with terms of one month or less.