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Property, Plant and Equipment - Additional information (Detail) (USD $) In Billions, unless otherwise specified	Mar. 30, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Accumulated depreciation	$ 6.28	$ 6.16

- Definition

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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