Cost Reduction Initiatives (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2011	Dec. 31, 2010
Cost Reduction Initiatives [Abstract]
Beginning Balance	$ 0	$ 17
Incurred	0
Settled	(15)
Adjustments	(2)
Remaining Balance	0	17
Cost Reduction Initiatives Text [Abstract]
Number Employees Severed Voluntary		2,461
Severance Costs		$ 293

Amount of costs incurred to date for the specified type of restructuring cost.

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Amount of any reversal and other adjustment made during the period to the amount of a previously accrued liability for a specified type of restructuring cost, excluding adjustments for costs incurred during the period, costs settled during the period, and foreign currency translation adjustments.

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- Definition

The charge against earnings in the period for known and estimated costs of termination benefits provided to current employees that are involuntarily terminated under a benefit arrangement associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding costs or losses pertaining to an entity newly acquired in a business combination or a discontinued operation as defined by generally accepted accounting principles and costs associated with one-time termination benefits.

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