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Income Taxes (Details) (Schedule of Deferred Tax Assets and Liabilities, Current and Noncurrent) (USD $)
In Millions, unless otherwise specified
Dec. 29, 2012
Dec. 31, 2011
Deferred Tax Assets and Liabilities, Current and Noncurrent [Line Items]    
Current deferred tax assets $ 1 $ 1
Non-current deferred tax assets 16 13
Net deferred tax assets $ 17 $ 14