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Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill by Segment (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Jan. 02, 2016 | Jan. 03, 2015
Goodwill [Line Items] |  |
Beginning Balance | $ 810.7 | $ 838.8
Currency translation | (26.8) | (41.3)
Acquisition | 6.2 | 13.2
Ending Balance | 790.1 | 810.7
Commercial & Industrial Group [Member] |  |
Goodwill [Line Items] |  |
Beginning Balance | 275.9 | 312.5
Currency translation | (22.8) | (36.6)
Ending Balance | 253.1 | 275.9
Snap-on Tools Group [Member] |  |
Goodwill [Line Items] |  |
Beginning Balance | $ 12.5 | $ 12.5
Currency translation |  |
Acquisition |  |
Ending Balance | $ 12.5 | $ 12.5
Repair Systems & Information Group [Member] |  |
Goodwill [Line Items] |  |
Beginning Balance | 522.3 | 513.8
Currency translation | (4.0) | (4.7)
Acquisition | 6.2 | 13.2
Ending Balance | $ 524.5 | $ 522.3

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of increase (decrease) from foreign currency translation adjustments and purchase accounting adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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