Retirement Benefits (Reconciliation of Prior Service Credit) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Pension  Benefits
Recognized as component of net benefit (credit) cost:
Total recognized as component of net benefit cost (credit)	$ (240)	$ (214)	$ (209)
Post-retirement Benefits
Recognized as component of net benefit (credit) cost:
Total recognized as component of net benefit cost (credit)	(5)	(2)	2
Non-U.S. | Pension  Benefits
Reconciliation of prior service credit (cost) recognized in accumulated other comprehensive (loss) income:
Beginning balance	(17)	(16)
Recognized as component of net benefit (credit) cost:
Recognized as component of net benefit cost (credit)	1	0
Total recognized as component of net benefit cost (credit)	(208)	(182)	(140)
Changes in plan assets and benefit obligations recognized in other comprehensive income (loss):
Plan amendments	2	0
Exchange rate adjustments	0	(1)
Ending balance	(14)	(17)	(16)
Non-U.S. | Post-retirement Benefits
Reconciliation of prior service credit (cost) recognized in accumulated other comprehensive (loss) income:
Beginning balance	3	5
Recognized as component of net benefit (credit) cost:
Recognized as component of net benefit cost (credit)	(2)	(2)
Total recognized as component of net benefit cost (credit)	(5)	(1)	1
Changes in plan assets and benefit obligations recognized in other comprehensive income (loss):
Plan amendments	0	0
Exchange rate adjustments	0	0
Ending balance	$ 1	$ 3	$ 5