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v2.4.1.9

Segments - Assets by Segment (Detail) (USD $) In Millions, unless otherwise specified | Jan. 03, 2015 | Dec. 28, 2013
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Segment Reporting Information [Line Items] |  |
Assets | $ 4,310.1 us-gaap_Assets | $ 4,110.0 us-gaap_Assets
Operating Segments [Member] |  |
Segment Reporting Information [Line Items] |  |
Assets | 3,944.9 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember | 3,731.9 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember
Operating Segments [Member] | Commercial & Industrial Group [Member] |  |
Segment Reporting Information [Line Items] |  |
Assets | 939.7 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = sna_CommercialAndIndustrialGroupMember | 971.0 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = sna_CommercialAndIndustrialGroupMember
Operating Segments [Member] | Snap-on Tools Group [Member] |  |
Segment Reporting Information [Line Items] |  |
Assets | 600.1 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = sna_ToolsGroupMember | 557.3 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = sna_ToolsGroupMember
Operating Segments [Member] | Repair Systems & Information Group [Member] |  |
Segment Reporting Information [Line Items] |  |
Assets | 1,036.8 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = sna_RepairSystemsAndInformationGroupMember | 979.6 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = sna_RepairSystemsAndInformationGroupMember
Operating Segments [Member] | Financial Services [Member] |  |
Segment Reporting Information [Line Items] |  |
Assets | 1,368.3 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = sna_FinancialServicesMember | 1,224.0 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = sna_FinancialServicesMember
Corporate [Member] |  |
Segment Reporting Information [Line Items] |  |
Assets | 401.7 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember | 431.8 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember
Intersegment Eliminations [Member] |  |
Segment Reporting Information [Line Items] |  |
Assets | $ (36.5)us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | $ (53.7)us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember

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- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + 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 210.5-02.18) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 18 -Article 5 + Details
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Balance Type: | debit
Period Type: | instant

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- Details
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Period Type: | duration

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- Details
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Period Type: |

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- Details
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