Other Comprehensive (Loss) Income (Schedule Of Components Of Comprehensive (Loss) Income) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), before tax	$ 61	$ (83)
Other comprehensive income (loss), tax	(19)	21
Other comprehensive income (loss), net of tax	80	(104)
Foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), before reclassification, before tax	119	(169)
Other comprehensive income (loss), before reclassification, tax	(6)	0
Other comprehensive income (loss), before reclassification, net of tax	125	(169)
Reclassification from AOCI, net of tax	0	0
Other comprehensive income (loss), net of tax	125	(169)
Pension and post-retirement plans gains (losses)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), before reclassification, net of tax	(48)	35
Reclassification from AOCI, before Tax	5	39
Reclassification from AOCI, tax	2	9
Reclassification from AOCI, net of tax	3	30
Other comprehensive income (loss), before tax	(58)	86
Other comprehensive income (loss), tax	(13)	21
Other comprehensive income (loss), net of tax	(45)	65
Net actuarial losses
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from AOCI, before Tax	5	39
Reclassification from AOCI, tax	2	9
Reclassification from AOCI, net of tax	3	30
Foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), before reclassification, before tax	(63)	65
Other comprehensive income (loss), before reclassification, tax	(15)	16
Other comprehensive income (loss), before reclassification, net of tax	(48)	49
Other adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), before reclassification, before tax	0	(18)
Other comprehensive income (loss), before reclassification, tax	0	(4)
Other comprehensive income (loss), before reclassification, net of tax	$ 0	$ (14)