Quarterly report pursuant to Section 13 or 15(d)

Financial Instruments (Details) (Summary of Derivative Instruments) (Details)

v2.4.1.9
Financial Instruments (Details) (Summary of Derivative Instruments) (Details) (USD $)
In Millions, unless otherwise specified
Mar. 28, 2015
Dec. 27, 2014
Foreign Exchange Contract    
Derivative [Line Items]    
Contracts designated as cash flow hedging instruments $ (13)us-gaap_ForeignCurrencyFairValueHedgeDerivativeAtFairValueNet
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
$ (6)us-gaap_ForeignCurrencyFairValueHedgeDerivativeAtFairValueNet
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
Contracts not designated as hedging instruments (1)us-gaap_ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAtFairValueNet
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
(1)us-gaap_ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAtFairValueNet
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
Derivative, hedging instruments, net 14us-gaap_DerivativeInstrumentsInHedgesAtFairValueNet
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
 
Cash Flow Hedging Instruments    
Derivative [Line Items]    
Derivative, notional amount 240invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
298invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
Fair Value Hedging | Interest Rate Contract    
Derivative [Line Items]    
Derivative, hedging instruments, net $ 3us-gaap_DerivativeInstrumentsInHedgesAtFairValueNet
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_FairValueHedgingMember
$ 3us-gaap_DerivativeInstrumentsInHedgesAtFairValueNet
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_FairValueHedgingMember