(Pension Benefit Adjustments Recognized In Other Comprehensive (Loss) Income) (Details)	12 Months Ended
	Dec. 31, 2023 USD ($)
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Current year actuarial (gain) loss	$ 192,000,000
Amortization of actuarial (loss) gain	(93,000,000)
Current year prior service cost	26,000,000
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax	(23,000,000)
Total recognized in other comprehensive income	102,000,000
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Current year actuarial (gain) loss	(3,000,000)
Amortization of actuarial (loss) gain	1,000,000
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax	0
Effect of foreign currency exchange rate movements	(1,000,000)
Total recognized in other comprehensive income	$ (3,000,000)