Leases - Components of Lease Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Leases [Abstract]
Operating	$ 208	$ 218	$ 237
Sublease income	(28)	(32)	(38)
Total net lease costs	$ 180	$ 186	$ 199