(Changes In Postretirement Benefit Obligation, Plan Assets, Funded Status And Amounts Recognized In Balance Sheet And Accumulated Other Comprehensive (Loss) Income) (Details) - Other Postretirement Benefits Plan [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
U.S. Plans
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation, January 1	$ 118	$ 125
Interest cost	6	7	$ 5
Participants’ contributions	1	2
Actuarial (gain) loss	15	8
Benefits paid	22	24
Benefit obligation, December 31	118	118	125
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets, January 1	0	0
Company contributions	21	22
Participants’ contributions	1	2
Benefits paid	(22)	(24)
Fair value of plan assets, December 31	0	0	0
Funded status, December 31	(118)	(118)
Current liability	(14)	(13)
Non-current liability	(104)	(105)
Amounts recognized in the consolidated balance sheet	(118)	(118)
Net actuarial loss (gain)	16	2
Amounts recognized in accumulated other comprehensive income (pre-tax)	16	2
Non-U.S. Plans
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation, January 1	4	4
Interest cost	0	0	0
Participants’ contributions	1	0
Actuarial (gain) loss	(1)	0
Benefits paid	0	0
Benefit obligation, December 31	4	4	4
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets, January 1	0	0
Company contributions	0	0
Participants’ contributions	0	0
Benefits paid	0	0
Fair value of plan assets, December 31	0	0	$ 0
Funded status, December 31	(4)	(4)
Current liability	0	0
Non-current liability	(4)	(4)
Amounts recognized in the consolidated balance sheet	(4)	(4)
Net actuarial loss (gain)	(2)	(1)
Amounts recognized in accumulated other comprehensive income (pre-tax)	$ (2)	$ (1)