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Other Income (Expense) - Net - Computation of Other Income (Expense) - Net (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 27, 2020 | Jun. 29, 2019 | Jun. 27, 2020 | Jun. 29, 2019
Other Income and Expenses [Abstract] |  |  |  |
Interest income | $ 0.3 | $ 0.3 | $ 0.7 | $ 0.7
Net foreign exchange loss | (0.7) | (1.0) | (2.6) | (2.5)
Net periodic pension and postretirement benefits – non-service | 2.4 | 2.8 | 5.4 | 5.0
Other | 0.0 | 0.0 | 0.0 | 0.4
Total other income (expense) – net | $ 2.0 | $ 2.1 | $ 3.5 | $ 3.6

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