Leases - Operating Expenses (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Leases [Abstract]
Operating lease cost	$ 140	$ 130	$ 133
Short-term lease cost	1	1	2
Variable cost	36	33	36
Sublease income	(5)	(5)	(7)
Net lease expense from operating leases	$ 172	$ 159	$ 164