Other Comprehensive Income (Loss) (Schedule Of Components Of Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Equity [Abstract]
Foreign currency translation adjustments, Pre-Tax	$ 500	$ (475)	$ (200)	$ (366)
Foreign currency translation adjustments, Tax	3	0	(4)	0
Foreign currency translation adjustments, Net of Tax	497	(475)	(196)	(366)
Pension/post-retirement plans:
Prior services credits, Pre-Tax	0	(1)	(1)	(2)
Prior service credits, Tax	0	(1)	0	(1)
Prior service credits, Net of Tax	0	0	(1)	(1)
Net actuarial loss, Pre-Tax	40	25	120	77
Net actuarial loss, Tax	9	6	28	18
Net actuarial loss, Net of Tax	31	19	92	59
Effect of remeasurement, Pre-tax	0	(8)	0	(9)
Effect of remeasurement, Tax	0	(2)	0	(2)
Effect of remeasurement, Net of Tax	0	(6)	0	(7)
Effect of settlement, Pre-tax	0	2	0	6
Effect of settlement, Tax	0	0	0	1
Effect of settlement, Net of Tax	0	2	0	5
Subtotal, Pre-Tax	40	18	119	72
Subtotal, Tax	9	3	28	16
Subtotal, Net of Tax	31	15	91	56
Foreign currency translation adjustment, Pre-Tax	(113)	64	17	30
Foreign currency translation adjustment, Tax	(19)	8	5	4
Foreign currency translation adjustment, Net of Tax	(94)	56	12	26
Pension/post-retirement plans gains, Pre-Tax	(73)	82	136	102
Pension/post-retirement plans gains, Tax	(10)	11	33	20
Pension/post-retirement plans gains, Net of Tax	(63)	71	103	82
Other comprehensive income (loss), before tax	427	(393)	(64)	(264)
Other comprehensive (loss) income, Tax	(7)	11	29	20
Other comprehensive income (loss), net of tax	$ 434	$ (404)	$ (93)	$ (284)