Leases - Lease Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Leases [Abstract]
Operating and short-term lease cost	$ 459	$ 451	$ 535
Finance lease cost:
Amortization of right-of-use assets	32	37	37
Interest on lease liability	12	15	16
Total finance lease cost	44	52	53
Total lease cost	$ 503	$ 503	$ 588