Leases - Components of Lease Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Leases [Abstract]
Operating Lease Expense (Note 15)	$ 302	$ 300	$ 295
Finance Lease Expense:
Amortization of ROU assets	12	10	9
Interest on lease liabilities	20	20	21
Short Term Lease Expense	11	17	11
Variable Lease Expense	3	5	8
Sublease Income	(10)	(11)	(11)
Total Lease Expense	$ 338	$ 341	$ 333