Retirement Benefits (Schedule of Total Recognized in Net Periodic Benefit Cost and Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
U.S. | Pension  Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recognized in net benefit (credit) cost and other comprehensive (income) loss	$ (105)	$ (427)	$ (722)
U.S. | Post-retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recognized in net benefit (credit) cost and other comprehensive (income) loss	3	(4)	0
Non-U.S. | Pension  Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recognized in net benefit (credit) cost and other comprehensive (income) loss	429	(436)	(745)
Non-U.S. | Post-retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recognized in net benefit (credit) cost and other comprehensive (income) loss	$ (9)	$ (13)	$ (2)