Derivative and Other Financial Instruments (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Objective for using derivative instruments			The Company’s objective in managing exposure to market risk is to limit the impact on earnings and cash flow.
Derivative, lower remaining maturity range			1 month
Derivative, higher remaining maturity range			27 months
Net loss to be reclassified to earnings			$ 35
Loss, net of tax, expected to be reclassified to earnings			28
Reclassification of anticipated transactions that were no longer considered probable			0	0
Changes in fair value of the derivative financial instruments, excluded from the assessment and measurement of hedge effectiveness reported in earnings	1		1
Foreign Exchange Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on foreign exchange contracts designated as fair value hedges	3	3	(1)	4
Gain (loss) on foreign exchange contracts not designated as fair value hedges	$ 3	$ (3)	$ (1)	$ (6)