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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. 29, 2019 | Jun. 30, 2018 | Jun. 29, 2019 | Jun. 30, 2018
Other Income and Expenses [Abstract] |  |  |  |
Interest income | $ 0.3 | $ 0.2 | $ 0.7 | $ 0.3
Net foreign exchange loss | (1.0) | (0.3) | (2.5) | (2.4)
Net periodic pension and postretirement benefits – non-service | 2.8 | 0.8 | 5.0 | 1.4
Settlement of treasury lock | 0.0 | 0.0 | 0.0 | 13.3
Loss on early extinguishment of debt | 0.0 | 0.0 | 0.0 | (7.8)
Other | 0.0 | (1.3) | 0.4 | (2.6)
Total other income (expense) – net | $ 2.1 | $ (0.6) | $ 3.6 | $ 2.2

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