Other Comprehensive Income (Loss) (Schedule Of Components Of Comprehensive Income (Loss)) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Components Of Accumulated Other Comprehensive Income [Line Items]
Foreign currency translation adjustments, Pre-Tax	$ (260)	$ 162
Foreign currency translation adjustments, Tax Expense	(4)	0
Foreign currency translation adjustments, Net of Tax	(256)	162
Unrealized investment gains (losses), Pre-Tax	0	(1)
Unrealized investment gains (losses), Tax Expense	0	1
Unrealized investment gains (losses), Net of Tax	0	(2)
Pension/post retirement plan: [Abstract]
Prior Service cost, Pre-Tax	(6)	(8)
Prior Service cost, Tax Expense	(2)	(5)
Prior Service cost, Net of Tax	(4)	(3)
Net actuarial loss, Pre-Tax	78	66
Net actuarial loss, Tax Expense	29	42
Net actuarial loss, Net of Tax	49	24
Subtotal, Pre-Tax	72	58
Subtotal, Tax Expense	27	37
Subtotal, Net of Tax	45	21
Foreign currency translation adjustment, Pre-Tax	180	(44)
Foreign currency translation adjustment, Tax Expense	41	(28)
Foreign currency translation adjustment, Net of Tax	139	(16)
Pension/retiree plans, Pre-Tax	252	14
Pension/retiree plans, Tax Expense	68	9
Pension/retiree plans, Net of Tax	184	5
Other comprehensive income (loss), before tax	(8)	175
Other Comprehensive Income (loss), Tax	64	10
Other comprehensive income (loss), net of tax	$ (72)	$ 165