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Severance and Facility Closure Costs - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011
Restructuring Cost and Reserve [Line Items]
Severance cost, required payment period, days	1 year
Accrual for facilities closed	$ 10	$ 14
Closure costs and accretion	4	1
Cash payment associated with facility closures	$ 8	$ 7

The charge against earnings in the period, comprised of costs incurred associated with an exit or disposal activity other than for a discontinued operations as defined under generally accepted accounting principles. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and 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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