Other Comprehensive Income (Loss) (Schedule Of Components Of Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Equity [Abstract]
Foreign currency translation adjustments, Pre-Tax		$ (52)	$ (278)	$ (373)	$ (458)
Foreign currency translation adjustments, Tax		2	(2)	1	(2)
Foreign currency translation adjustments, Net of Tax		(54)	(276)	(374)	(456)
Unrealized investment gains (losses), Pre-Tax		1	1	1	1
Unrealized investment gains (losses), Tax		0	0	0	0
Unrealized investment gains (losses), Net of Tax		1	1	1	1
Pension/post-retirement plans:
Prior services losses (gains), Pre-Tax	[1]	1	1	2	1
Prior service losses (gains), Tax	[1]	1	0	1	0
Prior Service losses (gains), Net of Tax	[1]	0	1	1	1
Net actuarial loss, Pre-Tax	[1]	41	67	125	220
Net actuarial loss, Tax	[1]	12	23	36	74
Net actuarial loss, Net of Tax	[1]	29	44	89	146
Subtotal, Pre-Tax		42	68	127	221
Subtotal, Tax		13	23	37	74
Subtotal, Net of Tax		29	45	90	147
Effect of remeasurement, Pre-tax		0	(89)	(1)	(92)
Effect of remeasurement, Tax		0	(30)	0	(31)
Effect of remeasurement, Net of Tax		0	(59)	(1)	(61)
Effect of curtailment, Pre-Tax		0	4	3	4
Effect of curtailment, Tax		0	0	1	0
Effect of curtailment, Net of Tax		0	4	2	4
Effect of settlement, Pre-tax		0	1	1	2
Effect of settlement, Tax		0	0	0	0
Effect of settlement, Net of Tax		0	1	1	2
Plan Termination, Pre-Tax				0	(6)
Plan Termination, Tax				0	(2)
Plan Termination, Net of Tax				0	(4)
Foreign currency translation adjustment, Pre-Tax		40	105	253	113
Foreign currency translation adjustment, Tax		4	24	41	25
Foreign currency translation adjustment, Net of Tax		36	81	212	88
Other, Pre-Tax		0	5	0	5
Other, Tax		0	1	0	1
Other, Net of Tax		0	4	0	4
Pension/post-retirement plans losses (gains), Pre-Tax		82	94	383	247
Pension/post-retirement plans losses (gains), Tax		17	18	79	67
Pension/post-retirement plans losses (gains), Net of Tax		65	76	304	180
Other comprehensive (loss) income, before tax		31	(183)	11	(210)
Other comprehensive income (loss), Tax		19	16	80	65
Other comprehensive (loss) income, net of tax		$ 12	$ (199)	$ (69)	$ (275)

[1] Components of net periodic pension cost are included in compensation and benefits in the Consolidated Statements of Income. Tax on prior service gains and net actuarial losses is included in income tax expense.