Annual report pursuant to Section 13 and 15(d)

Valuation and Qualifying Accounts (Details) (Valuation and Qualifying Accounts)

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Valuation and Qualifying Accounts (Details) (Valuation and Qualifying Accounts) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 29, 2012
Dec. 31, 2011
Dec. 25, 2010
Valuation and Qualifying Accounts Disclosure [Line Items]      
Valuation allowances and reserves, balance $ 2 $ 4 $ 7
Valuation allowances and reserves, charged to cost and expense 0 (1) 0
Valuation allowances and reserves, deductions 0 (1) (3)
Valuation allowances and reserves, balance $ 2 $ 2 $ 4