Derivative Financial Instruments (Narrative) (Details) (USD $)	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Derivative Instruments, Gain (Loss) [Line Items]
Objectives for Using Derivative Instruments	The Company’s objective in managing exposure to market risk is to limit the impact on earnings and cash flow.
Net loss to be reclassified to earnings	$ (30,000,000)
Loss, net of tax, expected to be reclassified to earnings	(26,000,000)
Reclassification of anticipated transactions that were no longer considered probable	0	0
Ineffective portion recorded in earnings	1,000,000
Changes in fair value of the derivative financial instruments, excluded from the assessment and measurement of hedge effectiveness reported in earnings	1,000,000
Foreign Exchange Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on foreign exchange contracts designated as fair value hedges	2,000,000	1,000,000
Gain (loss) on foreign exchange contracts not designated as fair value hedges	$ 1,000,000	$ 12,000,000
Minimum [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Remaining Maturity (in months)	1 month
Maximum [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Remaining Maturity (in months)	32 months