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Restructuring Activities - Summary of Changes in Liabilities for Restructuring Activities (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Restructuring And Related Activities [Abstract]
Beginning Balance	$ 64
Charges	35	37
Payments	(21)
Non-cash charges and other adjustments	(3)
Effect of foreign currency translation	(1)
Ending Balance	$ 74

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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- 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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