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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. 03, 2021 | Jun. 27, 2020 | Jul. 03, 2021 | Jun. 27, 2020
Other Income and Expenses [Abstract] |  |  |  |
Interest income | $ 0.4 | $ 0.3 | $ 0.8 | $ 0.7
Net foreign exchange income (loss) | 0.2 | (0.7) | 0.0 | (2.6)
Net periodic pension and postretirement benefits – non-service | 3.8 | 2.4 | 7.6 | 5.4
Foreign currency translation loss from sale of equity interest | (1.0) | 0.0 | (1.0) | 0.0
Other | 0.0 | 0.0 | 0.3 | 0.0
Total other income (expense) – net | $ 3.4 | $ 2.0 | $ 7.7 | $ 3.5

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