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Segments - Products and Services (Detail) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 02, 2016 | Oct. 03, 2015 | Jul. 04, 2015 | Apr. 04, 2015 | Jan. 03, 2015 | Sep. 27, 2014 | Jun. 28, 2014 | Mar. 29, 2014 | Jan. 02, 2016 | Jan. 03, 2015 | Dec. 28, 2013
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales | $ 851.7 | $ 821.5 | $ 851.8 | $ 827.8 | $ 857.4 | $ 806.3 | $ 826.5 | $ 787.5 | $ 3,352.8 | $ 3,277.7 | $ 3,056.5
Financial services revenue | $ 63.1 | $ 61.1 | $ 58.7 | $ 57.4 | $ 59.4 | $ 53.6 | $ 51.7 | $ 50.2 | 240.3 | 214.9 | 181.0
Total revenue |  |  |  |  |  |  |  |  | 3,593.1 | 3,492.6 | 3,237.5
Tools [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 1,910.1 | 1,868.5 | 1,743.3
Diagnostics and Repair Information [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 689.6 | 689.5 | 652.0
Equipment [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | $ 753.1 | $ 719.7 | $ 661.2

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