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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Restructuring Charges (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Restructuring Cost and Reserve [Line Items]
Expected annualized savings	$ 60
Restructuring and other charges	9	9
Number of positions eliminated	31	38
Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	6	5
Reserve, current	7		8
Severance payments	7
Facilities-related [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	1
Reserve, current	2		3
Asset impairments [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	1	4
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ 1