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Income Taxes - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Oct. 02, 2011	Sep. 30, 2012	Oct. 02, 2011
Reconciliation of Effective Income Tax Rate [Line Items]
Effective tax rate	13.96%	3.01%	21.15%	6.56%
U.S. statutory tax rate	35.00%	35.00%	35.00%	35.00%
Effective tax rate, deferred income tax benefit due to plan to repatriate unremitted earnings	$ 13		$ 13

A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.

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- Definition

The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems.

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