(Components Of Postretirement Benefit Expense) (Details) - Other Postretirement Benefits Plan [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 0	$ 0
Interest cost	7	5	5
Actuarial loss (gain)	0	3	5
Amortization of prior service credits	0	0	0
Net periodic pension (income) expense	7	8	10
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0	0
Interest cost	0	0	1
Actuarial loss (gain)	0	0	1
Amortization of prior service credits	0	0	(2)
Net periodic pension (income) expense	$ 0	$ 0	$ 0