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Segments (Assets By Segment) (Detail) (USD $) In Millions, unless otherwise specified | Dec. 29, 2012 | Dec. 31, 2011
--- | --- | ---
Segment Reporting Information [Line Items] |  |
Total assets from reportable segments | $ 3,476.9 | $ 3,251.0
Corporate | 477.7 | 470.1
Elimination of intersegment receivables | (52.3) | (48.2)
Total assets | 3,902.3 | 3,672.9
Commercial & Industrial Group [Member] |  |
Segment Reporting Information [Line Items] |  |
Total assets from reportable segments | 935.2 | 919.3
Snap-On Tools Group [Member] |  |
Segment Reporting Information [Line Items] |  |
Total assets from reportable segments | 537.7 | 463.7
Repair Systems & Information Group [Member] |  |
Segment Reporting Information [Line Items] |  |
Total assets from reportable segments | 927.7 | 944.2
Financial Services [Member] |  |
Segment Reporting Information [Line Items] |  |
Total assets from reportable segments | $ 1,076.3 | $ 923.8

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