Other Income (Expense), Net - Components of Other Income (Expense), Net (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
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Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||||||||||
Facilities closure and other income (costs) (a) | [1] | $ 25.3 | $ (0.1) | $ 23.0 | $ 0.0 | |||||
Asset disposals and write-offs | (10.5) | (8.0) | (18.8) | (15.5) | ||||||
Acquisition and integration-related costs | (1.6) | 0.0 | (1.6) | 0.0 | ||||||
DeRidder litigation (b) | [2] | 0.0 | (2.0) | 0.0 | (125.7) | |||||
DeRidder litigation insurance recovery (b) | [2] | 0.0 | 2.0 | 0.0 | 125.7 | |||||
Other | 9.3 | 4.7 | 11.8 | 11.7 | ||||||
Total | 3.9 | (12.2) | (9.2) | (34.8) | ||||||
Jackson, Alabama Mill | ||||||||||
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||||||||||
Jackson mill conversion-related activities (c) | [3] | $ 0.0 | $ 0.6 | $ 0.0 | $ (7.6) | |||||
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