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Commitments and Contingencies - Components of Capital Leases Future Minimum Payment Present Value (Detail) (USD $) In Millions, unless otherwise specified | Jan. 03, 2015
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Commitments and Contingencies Disclosure [Abstract] |
Other accrued liabilities | $ 5.7 sna_OtherAccruedLiabilitiesCapitalLeasePayments
Other long-term liabilities | 20.1 sna_OtherLongTermLiabilitiesCapitalLeasePayments
Total present value of minimum capital lease payments | $ 25.8 us-gaap_CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments

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- Definition Other accrued liabilities capital lease payments. + References No definition available. + Details
Name: | sna_OtherAccruedLiabilitiesCapitalLeasePayments
Namespace Prefix: | sna_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Other long-term liabilities capital lease payments. + References No definition available. + Details
Name: | sna_OtherLongTermLiabilitiesCapitalLeasePayments
Namespace Prefix: | sna_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Present value of minimum lease payments for capital leases net of executory costs, including amounts paid by the lessee to the lessor for insurance, maintenance and taxes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737 + Details
Name: | us-gaap_CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration