XML 47 R97.htm IDEA: XBRL DOCUMENT v2.4.1.9
Weighted Average Assumptions Used in the Measurement of Benefit Obligations (Detail) (North America)
Dec. 27, 2014
Dec. 28, 2013
Pension Benefits    
Weighted Average Discount Rate [Line Items]    
Discount rate 3.91%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_PensionPlansDefinedBenefitMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_NorthAmericaMember		 4.84%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_PensionPlansDefinedBenefitMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_NorthAmericaMember
Other Benefits, United States    
Weighted Average Discount Rate [Line Items]    
Discount rate 3.40%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_UnitedStatesPostretirementBenefitPlansOfUSEntityDefinedBenefitMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_NorthAmericaMember		 4.00%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_UnitedStatesPostretirementBenefitPlansOfUSEntityDefinedBenefitMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_NorthAmericaMember
Other Benefits, Canada    
Weighted Average Discount Rate [Line Items]    
Discount rate 4.00%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_ForeignPostretirementBenefitPlansDefinedBenefitMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_NorthAmericaMember		 4.80%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_ForeignPostretirementBenefitPlansDefinedBenefitMember
/ us-gaap_StatementGeographicalAxis
= us-gaap_NorthAmericaMember