Other Comprehensive Income (Loss) (Schedule Of Components Of Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Equity [Abstract]
Foreign currency translation adjustments, Pre-Tax		$ 235	$ 13
Foreign currency translation adjustments, Tax		0	0
Foreign currency translation adjustments, Net of Tax		235	13
Unrealized investment gains (losses), Pre-Tax		(5)	0
Unrealized investment gains (losses), Tax		(2)	0
Unrealized investment gains (losses), Net of Tax		(3)	0
Pension/post-retirement plans:
Prior services losses (gains), Pre-Tax	[1]	0	1
Prior service losses (gains), Tax	[1]	0	0
Prior Service losses (gains), Net of Tax	[1]	0	1
Net actuarial loss, Pre-Tax	[1]	40	41
Net actuarial loss, Tax	[1]	10	12
Net actuarial loss, Net of Tax	[1]	30	29
Subtotal, Pre-Tax		40	42
Subtotal, Tax		10	12
Subtotal, Net of Tax		30	30
Effect of remeasurement, Pre-tax		9	(1)
Effect of remeasurement, Tax		2	0
Effect of remeasurement, Net of Tax		7	(1)
Effect of curtailment, Pre-Tax		(1)	0
Effect of curtailment, Tax		0	0
Effect of curtailment, Net of Tax		(1)	0
Effect of settlement, Pre-tax		1	1
Effect of settlement, Tax		0	0
Effect of settlement, Net of Tax		1	1
Foreign currency translation adjustment, Pre-Tax		(15)	97
Foreign currency translation adjustment, Tax		(3)	16
Foreign currency translation adjustment, Net of Tax		(12)	81
Other, Pre-Tax		(1)	(1)
Other, Tax		0	0
Other, Net of Tax		(1)	(1)
Pension/post-retirement plans losses (gains), Pre-Tax		33	138
Pension/post-retirement plans losses (gains), Tax		9	28
Pension/post-retirement plans losses (gains), Net of Tax		24	110
Other comprehensive income, before tax		263	151
Other comprehensive income (loss), Tax		7	28
Other comprehensive income, net of tax		$ 256	$ 123

[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.