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Income Tax Expense [Details] (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jul. 02, 2011	Jul. 03, 2010	Jul. 02, 2011	Jul. 03, 2010
Income Tax Expense [Textuals] [Abstract]
Continuing operations income tax rate	32.00%	18.00%	32.00%	30.00%
Federal statutory income tax rate	35.00%	35.00%	35.00%	35.00%
Effective tax rate reconciliation, Benefits related to changes in functional currency of Canadian subsidiaries		$ 10		$ 10
Effective tax rate reconciliation, Write-off of deferred tax asset				$ 11

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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