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EMPLOYEE BENEFIT PLANS - Expected Future Benefit Payments (Detail) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Jan. 03, 2015
Compensation and Retirement Disclosure [Abstract]  
Defined Benefit Plan, Expected Future Benefit Payments, ten Fiscal Years Thereafter 10 years
Total $ 1,662.7swk_DefinedBenefitPlanExpectedFutureBenefitPayments
Year 1 163.4us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
Year 2 169.9us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo
Year 3 196.2us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree
Year 4 159.7us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour
Year 5 159.0us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive
Years 6-10 $ 814.5us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter