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Receivables - Schedule of Performing and Nonperforming Finance and Contract Receivables (Detail) (USD $) In Millions, unless otherwise specified | Jun. 28, 2014 | Dec. 28, 2013
--- | --- | ---
Financing Receivable, Recorded Investment [Line Items] |  |
Finance Receivables | $ 1,042.8 | $ 963.0
Contract Receivables | 303.0 | 288.8
Performing [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Finance Receivables | 1,029.4 | 947.8
Contract Receivables | 301.9 | 287.8
Nonperforming [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Finance Receivables | 13.4 | 15.2
Contract Receivables | $ 1.1 | $ 1.0

X
- Definition Contract receivable. + References No definition available. + Details
Name: | sna_ContractReceivable
Namespace Prefix: | sna_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Notes and loans receivable. + References No definition available. + Details
Name: | sna_NotesAndLoansReceivable
Namespace Prefix: | sna_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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