Other Comprehensive Income (Loss) (Schedule Of Components Of Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), before tax	$ (614)	$ (142)	$ (1,325)	$ (179)
Other comprehensive income (loss), tax	71	50	148	56
Other comprehensive loss, net of tax	(685)	(192)	(1,473)	(235)
Foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), before reclassification, before tax	(895)	(346)	(1,928)	(413)
Other comprehensive income (loss), before reclassification, tax	0	0	0	0
Other comprehensive income (loss), before reclassification, net of tax	(895)	(346)	(1,928)	(413)
Reclassification from AOCI, net of tax	0	0	0	0
Other comprehensive loss, net of tax	(895)	(346)	(1,928)	(413)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), before reclassification, net of tax	182	115	371	63
Reclassification from AOCI, before Tax	37	52	113	155
Reclassification from AOCI, tax	9	13	29	40
Reclassification from AOCI, net of tax	28	39	84	115
Other comprehensive income (loss), before tax	281	204	603	234
Other comprehensive income (loss), tax	71	50	148	56
Other comprehensive loss, net of tax	210	154	455	178
Prior service credits
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from AOCI, before Tax			(1)	(1)
Reclassification from AOCI, tax			0	0
Reclassification from AOCI, net of tax			(1)	(1)
Net actuarial losses
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from AOCI, before Tax	37	52	114	156
Reclassification from AOCI, tax	9	13	29	40
Reclassification from AOCI, net of tax	28	39	85	116
Foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), before reclassification, before tax	247	88	499	7
Other comprehensive income (loss), before reclassification, tax	63	21	123	1
Other comprehensive income (loss), before reclassification, net of tax	184	67	376	6
Effect of remeasurement
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), before reclassification, before tax	(2)	64	8	77
Other comprehensive income (loss), before reclassification, tax	0	16	1	17
Other comprehensive income (loss), before reclassification, net of tax	(2)	48	7	60
Effect of settlement
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), before reclassification, before tax			2	2
Other comprehensive income (loss), before reclassification, tax			0	0
Other comprehensive income (loss), before reclassification, net of tax			2	2
Other adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), before reclassification, before tax	(1)	0	(19)	(7)
Other comprehensive income (loss), before reclassification, tax	(1)	0	(5)	(2)
Other comprehensive income (loss), before reclassification, net of tax	$ 0	$ 0	$ (14)	$ (5)