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v3.20.2

Restructuring and Other Items, net (Details) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 28, 2020 USD ($) Mill | Jun. 30, 2019 USD ($) | Jun. 28, 2020 USD ($) Mill | Jun. 30, 2019 USD ($)
Restructuring Charges [Abstract] |  |  |  |
Impairment of assets | $ 6.0 | $ 7.5 | $ 6.0 | $ 7.5
Severance and other employee costs | 0.3 | 5.7 | 0.3 | 5.7
Total restructuring and other items, net | 6.5 | 13.2 | 6.5 | 13.2
Restructuring Reserve [Roll Forward] |  |  |  |
Restructuring liability, beginning of period |  |  | 5.0 |
Additional provision |  |  | 0.3 |
Cash payments |  |  | (0.7) |
Restructuring liability, ending of period | 4.6 |  | 4.6 |
Performance Materials [Member] |  |  |  |
Restructuring Charges [Abstract] |  |  |  |
Impairment of assets | 0.0 | 4.2 | 0.0 | 4.2
Severance and other employee costs | 0.0 | 2.8 | 0.0 | 2.8
Specialty Minerals [Member] |  |  |  |
Restructuring Charges [Abstract] |  |  |  |
Impairment of assets | 6.0 | 1.6 | 6.0 | 1.6
Severance and other employee costs | 0.3 | 0.9 | 0.3 | 0.9
Refractories [Member] |  |  |  |
Restructuring Charges [Abstract] |  |  |  |
Severance and other employee costs | 0.0 | 0.8 | 0.0 | 0.8
Energy Services [Member] |  |  |  |
Restructuring Charges [Abstract] |  |  |  |
Impairment of assets | 0.0 | 1.7 | 0.0 | 1.7
Severance and other employee costs | 0.0 | 0.1 | 0.0 | 0.1
Corporate [Member] |  |  |  |
Restructuring Charges [Abstract] |  |  |  |
Severance and other employee costs | 0.0 | 1.1 | 0.0 | 1.1
Other | $ 0.2 | $ 0.0 | $ 0.2 | $ 0.0
Verso Papers [Member] |  |  |  |
Restructuring and Other Items, Net [Abstract] |  |  |  |
Number of paper mills being idled indefinitely | Mill | 2 |  | 2 |

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