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Receivables - Rollforward of Combined Allowances for Doubtful Accounts Related to Trade and Other Accounts Receivable (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Receivables [Abstract]
Balance at Beginning of Year	$ 48.7	$ 50.3	$ 52.5
Expenses	30.7	31.3	26.2
Deductions	(33.4)	(32.9)	(28.4)
Balance at End of Year	$ 46.0	$ 48.7	$ 50.3

X

- Definition

Accounts notes, loans and contract receivable allowance for credit losses.

+ References

No definition available.

+ Details

Name:	sna_AccountsNotesLoansAndContractReceivableAllowanceForCreditLosses
Namespace Prefix:	sna_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Accounts, Notes loans, and Contract Receivable allowance for credit losses provision.

+ References

No definition available.

+ Details

Name:	sna_AccountsNotesLoansAndContractReceivableAllowanceForCreditLossesProvision
Namespace Prefix:	sna_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Accounts, Notes loans, and Contract Receivable allowance for credit losses write-offs net of recoveries.

+ References

No definition available.

+ Details

Name:	sna_AccountsNotesLoansAndContractReceivableAllowanceForCreditLossesWriteOffsNetOfRecoveries
Namespace Prefix:	sna_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

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