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Commitments and Contingencies (Details) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Oct. 31, 2015 USD ($) | Dec. 31, 2000 assessment
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] |  |  |  |  |
2017 | $ 4.4 |  |  |  |
2018 | 4.0 |  |  |  |
2019 | 3.3 |  |  |  |
2020 | 3.2 |  |  |  |
2021 | 3.2 |  |  |  |
Thereafter | 12.0 |  |  |  |
Total | 30.1 |  |  |  |
Rent expense | 6.9 | $ 6.8 | $ 6.1 |  |
Loss Contingencies [Line Items] |  |  |  |  |
Capital expenditures for environmental matters | 2.8 |  |  |  |
Capital expenditures for environmental matters, due in two years (less than) | 1.0 |  |  |  |
Unfavorable Regulatory Action [Member] | Raw Materials Assessment [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Number of assessments from the tax authorities regarding ICMS taxes | assessment |  |  |  |  | 2
Number of tax assessments related to periods that predated acquisition and are covered by indemnification | assessment |  |  |  |  | 1
Unfavorable Regulatory Action [Member] | Electricity Assessment [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Number of assessments from the tax authorities regarding ICMS taxes | assessment |  |  |  |  | 3
LTRI and PdM Subsidiaries [Member] | Energy Cogeneration Steam Supply Agreement [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Minimum annual commitments | 2.0 |  |  |  |
SWM-B Brazilian Mill [Member] | Transmission and Distribution of Energy Agreement [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Purchase of electrical energy, estimated annual cost | 3.0 |  |  |  |
French Mills [Member] | Transmission and Distribution of Energy Agreement [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Estimated due within one year | 8.0 |  |  |  |
Calcium Carbonate [Member] | PdM Subsidiary [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Purchase commitment, remaining amount committed | 2.0 |  |  |  |
Calcium Carbonate, Through 2024 [Member] | PdM Subsidiary [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Purchase commitment, remaining amount committed | 11.0 |  |  |  |
Maximum [Member] | Unfavorable Regulatory Action [Member] | Raw Materials Assessment [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Loss Contingency, Estimate of Possible Loss |  |  |  | $ 16.0 |
Maximum [Member] | Unfavorable Regulatory Action [Member] | Raw Materials Assessment 2 [Member] [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Loss Contingency, Estimate of Possible Loss | 13.0 |  |  |  |
Maximum [Member] | Unfavorable Regulatory Action [Member] | Electricity Assessment One [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Loss Contingency, Estimate of Possible Loss | 5.0 |  |  |  |
Maximum [Member] | Unfavorable Regulatory Action [Member] | Electricity Assessment Two [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Loss Contingency, Estimate of Possible Loss | 9.0 |  |  |  |
Maximum [Member] | Unfavorable Regulatory Action [Member] | Electricity Assessment Three [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Loss Contingency, Estimate of Possible Loss | $ 4.0 |  |  |  |

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