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Risk Management (Narrative) (Details) (USD $)
Apr. 04, 2015
Dec. 31, 2014
Derivative [Line Items]    
Notional amount of foreign currency derivatives $ 694,000,000us-gaap_CreditDerivativeMaximumExposureUndiscounted $ 628,000,000us-gaap_CreditDerivativeMaximumExposureUndiscounted
Not Designated As Hedging Instruments    
Derivative [Line Items]    
Fair value of derivative liabilities 3,000,000us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 7,000,000us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Not Designated As Hedging Instruments | Interest Rate Swap | Other Liabilities    
Derivative [Line Items]    
Fair value of derivative liabilities 2,000,000us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 2,000,000us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Credit Concentration Risk    
Derivative [Line Items]    
Notional amount of foreign currency derivatives 2,000,000us-gaap_CreditDerivativeMaximumExposureUndiscounted
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CreditConcentrationRiskMember		  
Reported Value Measurement    
Derivative [Line Items]    
Long-term debt $ 3,400,000,000us-gaap_LongTermDebtFairValue
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember