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Accounts Receivable - Schedule of Finance and Contract Receivables on Nonaccrual Status (Detail) (USD $) In Millions, unless otherwise specified | Sep. 28, 2013 | Dec. 29, 2012
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Receivables [Abstract] |  |
Finance receivables | $ 7.9 | $ 7.2
Contract receivables | $ 1.1 | $ 0.9

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- Definition Contract receivable recorded investment nonaccrual status. + References No definition available. + Details
Name: | sna_ContractReceivableRecordedInvestmentNonaccrualStatus
Namespace Prefix: | sna_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Notes and loans receivable recorded investment non-accrual status. + References No definition available. + Details
Name: | sna_NotesAndLoansReceivableRecordedInvestmentNonAccrualStatus
Namespace Prefix: | sna_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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