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Accounts Receivable - Schedule of Performing and Nonperforming Finance and Contract Receivables (Detail) (USD $) In Millions, unless otherwise specified	Sep. 28, 2013	Dec. 29, 2012
Financing Receivable, Recorded Investment [Line Items]
Finance Receivables	$ 935.9	$ 844.2
Contract Receivables	287.9	260.3
Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Finance Receivables	922.1	830.8
Contract Receivables	286.8	259.4
Nonperforming [Member]
Financing Receivable, Recorded Investment [Line Items]
Finance Receivables	13.8	13.4
Contract Receivables	$ 1.1	$ 0.9

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