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v3.22.4

Restructuring and Other Items, net (Details) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Oct. 03, 2021 USD ($) | Sep. 27, 2020 USD ($) | Jun. 28, 2020 USD ($) Mill | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Restructuring Charges [Abstract] |  |  |  |  |  |
Asset write-down charges |  |  |  | $ 0.0 | $ 0.7 | $ 7.1
Severance and other related costs |  |  |  | 0.0 | 0.4 | 0.5
Total restructuring and other items, net |  |  |  | 0.0 | 1.1 | 7.6
Restructuring Liability [Roll Forward] |  |  |  |  |  |
Restructuring liability, beginning of period |  |  |  | 2.2 | 3.6 |
Additional provisions |  |  |  | 0.0 | 0.1 |
Cash payments |  |  |  | (0.7) | (1.5) |
Other |  |  |  | (1.5) | 0.0 |
Restructuring liability, end of period |  |  |  | 0.0 | 2.2 | 3.6
Specialty Minerals [Member] |  |  |  |  |  |
Restructuring Charges [Abstract] |  |  |  |  |  |
Asset write-down charges |  |  |  | 0.0 | 0.7 | 7.1
Severance and other related costs |  |  |  | $ 0.0 | $ 0.4 | $ 0.5
Specialty Minerals [Member] | Paper PCC [Member] |  |  |  |  |  |
Restructuring and Other Items, Net [Abstract] |  |  |  |  |  |
Number of mills with lease terminations | Mill |  |  | 1 |  |  |
Restructuring Charges [Abstract] |  |  |  |  |  |
Asset write-down charges | $ 0.7 | $ 1.1 | $ 6.0 |  |  |
Severance and other related costs | $ 0.4 |  | $ 0.3 |  |  |
Verso Papers [Member] |  |  |  |  |  |
Restructuring and Other Items, Net [Abstract] |  |  |  |  |  |
Number of paper mills being idled indefinitely | Mill |  |  | 2 |  |  |

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- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=126905981&loc=d3e2420-110228 + Details
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