Leases Lease Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Lease Costs [Abstract]
Operating lease cost	$ 246	$ 271	$ 286
Variable lease cost	45	32	39
Sublease income	(103)	(99)	(99)
Net lease cost	$ 188	$ 204	$ 226