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Other Income (Expense), Net (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Other Income And Expenses [Abstract] |  |  |  |
DeRidder mill incident | $ 2.5 |  | $ (2.5) |
Integration-related, facilities closure and other costs | (0.5) | $ (2.6) | (1.3) | $ (4.5)
Hexacomb working capital adjustment |  |  | 2.3 |
Asset disposals and write-offs | (2.4) | (1.1) | (4.7) | (2.9)
Other | (0.2) | (1.4) | (1.4) | (1.6)
Total | $ (0.6) | $ (5.1) | $ (7.6) | $ (9.0)

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