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Roll Forward of Restructuring Reserve (Detail) (Severance [Member], USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2014
Severance [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve	$ 44
Expenses	19
Cash Payments	(19)
Restructuring Reserve	$ 44

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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