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Other Income (Expense) - Net - Computation of Other Income (Expense) - Net (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 01, 2017 | Jul. 02, 2016 | Jul. 01, 2017 | Jul. 02, 2016
Other Income and Expenses [Abstract] |  |  |  |
Interest income | $ 0.1 | $ 0.2 | $ 0.2 | $ 0.3
Net foreign exchange gain (loss) | (2.0) | 1.0 | (3.7) | 0.1
Other |  |  | (0.1) | 0.1
Total other income (expense) - net | $ (1.9) | $ 1.2 | $ (3.6) | $ 0.5

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