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Summary of Revenues, Income (Loss) Before Taxes, and Gain (Loss) on Dispositions, Net of Income Tax (Detail) (USD $)
In Millions
3 Months Ended9 Months Ended
Sep. 09, 2011
Sep. 10, 2010
Sep. 09, 2011
Sep. 10, 2010
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Revenues$ 1$ 2$ 5$ 11
Loss before income taxes  (4)(3)
Loss on dispositions, net of income taxes   $ (1)