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Segment Information - Selected Financial Information by Reportable Segment (Parenthetical) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Corrugated Products Facilities And Design Centres |  |
Segment Reporting Information [Line Items] |  |
Restructuring charges | $ 0.1 | $ 9.7
Jackson, Alabama Mill |  |
Segment Reporting Information [Line Items] |  |
Adjustment of asset retirement obligation |  | $ 1.2
Jackson, Alabama Mill | Corrugated Products Facilities |  |
Segment Reporting Information [Line Items] |  |
Adjustment of asset retirement obligation | $ 10.4 |

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