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v2.4.1.9

Short-term and Long-term Debt - Additional Information (Detail) (USD $) | 3 Months Ended |
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Apr. 04, 2015 | Jan. 03, 2015
Schedule Of Debt Instruments [Line Items] |  |
Notes payable and current maturities of long-term debt | $ 78,800,000 us-gaap_NotesPayableCurrent | $ 56,600,000 us-gaap_NotesPayableCurrent
Commercial paper borrowings | 52,500,000 us-gaap_CommercialPaper | 37,000,000 us-gaap_CommercialPaper
Other notes payable | 26,300,000 us-gaap_OtherNotesPayable | 19,600,000 us-gaap_OtherNotesPayable
Five-year Multi-Currency Revolving Credit Facility [Member] |  |
Schedule Of Debt Instruments [Line Items] |  |
Revolving credit facility, amount available | 700,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_DebtInstrumentAxis = sna_FiveYearMultiCurrencyRevolvingCreditFacilityMember |
Revolving credit facility, outstanding amount | $ 0 us-gaap_LineOfCredit / us-gaap_DebtInstrumentAxis = sna_FiveYearMultiCurrencyRevolvingCreditFacilityMember |
Debt maturity term | Five-year |
Revolving credit facility, termination date | Sep. 27, 2018 |
Debt instrument, restrictive covenants | (i) a ratio not greater than 0.60 to 1.00 of consolidated net debt (consolidated debt net of certain cash adjustments) to the sum of such consolidated net debt plus total equity and less accumulated other comprehensive income or loss; or (ii) a ratio not greater than 3.50 to 1.00 of such consolidated net debt to earnings before interest, taxes, depreciation, amortization and certain other adjustments for the preceding four fiscal quarters then ended. |
Actual debt-to-capital ratio | 0.27 sna_ActualDebtToCapitalRatio / us-gaap_DebtInstrumentAxis = sna_FiveYearMultiCurrencyRevolvingCreditFacilityMember |
Actual debt-to-income ratio | 1.14 sna_ActualDebtToIncomeRatio / us-gaap_DebtInstrumentAxis = sna_FiveYearMultiCurrencyRevolvingCreditFacilityMember |
Five-year Multi-Currency Revolving Credit Facility [Member] | Maximum [Member] |  |
Schedule Of Debt Instruments [Line Items] |  |
Maximum limit of required debt-to-capital ratio | 0.60 sna_RequiredDebtToCapitalRatio / us-gaap_DebtInstrumentAxis = sna_FiveYearMultiCurrencyRevolvingCreditFacilityMember / us-gaap_RangeAxis = us-gaap_MaximumMember |
Maximum limit of required debt-to-income ratio | 3.50 sna_RequiredDebtToIncomeRatio / us-gaap_DebtInstrumentAxis = sna_FiveYearMultiCurrencyRevolvingCreditFacilityMember / us-gaap_RangeAxis = us-gaap_MaximumMember |

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- Definition Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 7 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(a)(3)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.13(2)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Subparagraph a(3) -Article 5 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13 -Subparagraph 2 -Article 9 + Details
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- Definition Description of covenants that limit or prohibit certain actions or activities without the lender's prior consent within a specified period of time or until certain specified targets are achieved for example, reduction of the debt or an increase in net worth to a specified amount). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(e)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph e -Article 4 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823 + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition Sum of the carrying values as of the balance sheet date of the portions of long-term notes payable due within one year or the operating cycle if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20 -Article 5 + Details
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