Restructuring (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Jun. 30, 2012	Dec. 31, 2011 Restructuring Plan, 2011 [Member] Positions	Jun. 30, 2012 Growth And Value Plan [Member]	Jun. 30, 2012 Restructuring Plan, 2006 [Member]
Restructuring (Textual) [Abstract]
Pre-tax restructuring charge		$ 66	$ 5
Workforce reduction, positions		800
Restructuring charges paid	12
Restructuring reserve, current	$ 37			$ 3

Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.

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Carrying amount as of the balance sheet date of known and estimated obligations associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, which are expected to be paid in the next twelve months or in the normal operating cycle if longer. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

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- Definition

Amount of cash paid in the period to fully or partially settle a specified, previously accrued type of restructuring cost.

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