Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details) (Schedule of Gross Unrecognized Tax Benefits)

v2.4.1.9
Income Taxes (Details) (Schedule of Gross Unrecognized Tax Benefits) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 27, 2014
Dec. 28, 2013
Dec. 29, 2012
Schedule of Gross Unrecognized Tax Benefits [Line Items]      
Unrecognized tax benefits, beginning $ 52us-gaap_UnrecognizedTaxBenefits $ 56us-gaap_UnrecognizedTaxBenefits $ 69us-gaap_UnrecognizedTaxBenefits
Increases for tax positions taken in prior years 1us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions 1us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions 3us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions
Decreases for tax positions taken in prior years 0us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions (2)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions (4)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions
Increases for tax positions taken in the current year 2us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions 4us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions 3us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions
Decreases for settlements with taxing authorities (27)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions (7)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions (15)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions
Unrecognized tax benefits, ending $ 28us-gaap_UnrecognizedTaxBenefits $ 52us-gaap_UnrecognizedTaxBenefits $ 56us-gaap_UnrecognizedTaxBenefits