Retirement Benefits (Reconciliation of Prior Service Credit) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Pension  Benefits
Recognized as component of net benefit (credit) cost:
Effect of curtailment	$ 0	$ (2)	$ 0
Total recognized as component of net benefit (credit) cost	(209)	(240)	(222)
Post-retirement Benefits
Recognized as component of net benefit (credit) cost:
Effect of curtailment	0	0	0
Total recognized as component of net benefit (credit) cost	2	2	1
Prior Service Credit (Cost)
Recognized as component of net benefit (credit) cost:
Reclassification from AOCI, before tax	(2)	(2)	(2)
Non-U.S. | Pension  Benefits
Recognized as component of net benefit (credit) cost:
Effect of curtailment	0	(2)	0
Total recognized as component of net benefit (credit) cost	(140)	(187)	(162)
Non-U.S. | Post-retirement Benefits
Recognized as component of net benefit (credit) cost:
Effect of curtailment	0	0	0
Total recognized as component of net benefit (credit) cost	1	2	0
Non-U.S. | Prior Service Credit (Cost) | Pension  Benefits
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(18)	(13)
Recognized as component of net benefit (credit) cost:
Reclassification from AOCI, before tax	0	0
Effect of curtailment	0	2
Total recognized as component of net benefit (credit) cost	0	2
Plan amendments	0	(7)
Exchange rate adjustments	2	0
Ending balance	(16)	(18)	(13)
Non-U.S. | Prior Service Credit (Cost) | Post-retirement Benefits
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	7	9
Recognized as component of net benefit (credit) cost:
Reclassification from AOCI, before tax	(2)	(2)
Effect of curtailment	0	0
Total recognized as component of net benefit (credit) cost	(2)	(2)
Plan amendments	0	0
Exchange rate adjustments	0	0
Ending balance	$ 5	$ 7	$ 9