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Segment and Related Information, Segment Information (Details) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2024 USD ($) | Jun. 30, 2024 USD ($) | Oct. 01, 2023 USD ($) | Dec. 31, 2024 USD ($) Segment ProductLine | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
Segment Reporting Information [Abstract] |  |  |  |  |  |
Number of reportable segments | Segment |  |  |  | 2 |  |
Net sales |  |  |  | $ 2,118.5 | $ 2,169.9 | $ 2,125.5
Cost of goods sold |  |  |  | 1,570.8 | 1,662.8 | 1,660.5
Production margin |  |  |  | 547.7 | 507.1 | 465.0
Marketing and administrative expenses |  |  |  | 209.2 | 206.0 | 192.1
Research and development expenses |  |  |  | 23.0 | 21.2 | 20.4
Provision for credit losses |  | $ 30.0 |  | 30.0 | 0.0 | 0.0
Gain on sale of assets, net |  |  |  | (12.3) | 0.0 | 0.0
Impairment of assets |  |  |  | 0.0 | 71.7 | 0.0
Restructuring and other items, net |  |  |  | 0.0 | 6.9 | 0.0
Acquisition-related expenses |  |  |  | 0.0 | 0.3 | 5.1
Litigation expenses |  |  |  | 11.3 | 29.2 | 32.6
Income from operations |  |  |  | 286.5 | 171.8 | 214.8
Interest expense, net |  |  |  | 56.4 | 59.2 | 43.9
Other non-operating deductions, net |  |  |  | (4.7) | (4.9) | (3.8)
Debt extinguishment expenses | $ (1.8) |  |  | (1.8) | 0.0 | (6.9)
Non-cash pension settlement charge |  |  |  | 0.0 | 0.0 | (3.5)
Income before tax and equity in earnings |  |  |  | 223.6 | 107.7 | 156.7
Depreciation, depletion and amortization |  |  |  | 94.9 | 95.0 | 94.2
Segment assets | 3,393.9 |  |  | $ 3,393.9 | 3,346.6 |
Consumer & Specialties [Member] |  |  |  |  |  |
Segment Reporting Information [Abstract] |  |  |  |  |  |
Number of product lines in segment | ProductLine |  |  |  | 2 |  |
Net sales |  |  |  | $ 1,140.2 | 1,160.2 | 1,124.6
Impairment of assets |  |  | $ 71.7 |  |  |
Engineered Solutions [Member] |  |  |  |  |  |
Segment Reporting Information [Abstract] |  |  |  |  |  |
Number of product lines in segment | ProductLine |  |  |  | 2 |  |
Net sales |  |  |  | $ 978.3 | 1,009.7 | 1,000.9
Gain on sale of assets, net | (12.3) |  |  |  |  |
Operating Segments [Member] |  |  |  |  |  |
Segment Reporting Information [Abstract] |  |  |  |  |  |
Net sales |  |  |  | 2,118.5 | 2,169.9 | 2,125.5
Cost of goods sold |  |  |  | 1,570.8 | 1,663.0 | 1,660.5
Production margin |  |  |  | 547.7 | 506.9 | 465.0
Marketing and administrative expenses |  |  |  | 197.5 | 193.7 | 183.8
Research and development expenses |  |  |  | 23.0 | 21.2 | 20.4
Gain on sale of assets, net |  |  |  | (12.3) | 0.0 |
Impairment of assets |  |  |  | 0.0 | 71.7 |
Restructuring and other items, net |  |  |  | 0.0 | 4.1 |
Acquisition-related expenses |  |  |  |  |  | 2.1
Litigation expenses |  |  |  | 0.0 | 26.8 | 32.6
Income from operations |  |  |  | 339.5 | 189.4 | 226.1
Depreciation, depletion and amortization |  |  |  | 94.9 | 94.9 | 94.2
Segment assets | 3,393.9 |  |  | 3,393.9 | 3,346.6 | 3,401.6
Capital expenditures |  |  |  | 89.5 | 93.5 | 82.3
Operating Segments [Member] | Consumer & Specialties [Member] |  |  |  |  |  |
Segment Reporting Information [Abstract] |  |  |  |  |  |
Net sales |  |  |  | 1,140.2 | 1,160.2 | 1,124.6
Cost of goods sold |  |  |  | 890.4 | 938.6 | 937.0
Production margin |  |  |  | 249.8 | 221.6 | 187.6
Marketing and administrative expenses |  |  |  | 71.7 | 69.1 | 63.1
Research and development expenses |  |  |  | 12.6 | 11.5 | 10.8
Gain on sale of assets, net |  |  |  | 0.0 | 0.0 |
Impairment of assets |  |  |  | 0.0 | 71.7 |
Restructuring and other items, net |  |  |  | 0.0 | 0.9 |
Acquisition-related expenses |  |  |  |  |  | 2.1
Litigation expenses |  |  |  | 0.0 | 26.8 | 32.6
Income from operations |  |  |  | 165.5 | 41.6 | 79.0
Depreciation, depletion and amortization |  |  |  | 47.2 | 47.2 | 48.0
Segment assets | 1,289.4 |  |  | 1,289.4 | 1,244.8 | 1,107.5
Capital expenditures |  |  |  | 45.2 | 56.8 | 44.3
Operating Segments [Member] | Engineered Solutions [Member] |  |  |  |  |  |
Segment Reporting Information [Abstract] |  |  |  |  |  |
Net sales |  |  |  | 978.3 | 1,009.7 | 1,000.9
Cost of goods sold |  |  |  | 680.4 | 724.4 | 723.5
Production margin |  |  |  | 297.9 | 285.3 | 277.4
Marketing and administrative expenses |  |  |  | 125.8 | 124.6 | 120.7
Research and development expenses |  |  |  | 10.4 | 9.7 | 9.6
Gain on sale of assets, net |  |  |  | (12.3) | 0.0 |
Impairment of assets |  |  |  | 0.0 | 0.0 |
Restructuring and other items, net |  |  |  | 0.0 | 3.2 |
Acquisition-related expenses |  |  |  |  |  | 0.0
Litigation expenses |  |  |  | 0.0 | 0.0 | 0.0
Income from operations |  |  |  | 174.0 | 147.8 | 147.1
Depreciation, depletion and amortization |  |  |  | 47.7 | 47.7 | 46.2
Segment assets | 2,028.0 |  |  | 2,028.0 | 2,028.5 | 2,187.5
Capital expenditures |  |  |  | 39.3 | 31.2 | 34.0
Reconciling Item [Member] |  |  |  |  |  |
Segment Reporting Information [Abstract] |  |  |  |  |  |
Provision for credit losses |  |  |  | 30.0 | 0.0 | 0.0
Restructuring and other items, net |  |  |  | 0.0 | 2.8 | 0.0
Acquisition-related expenses |  |  |  | 0.0 | 0.3 | 3.0
Litigation expenses |  |  |  | 11.3 | 2.4 | 0.0
Interest expense, net |  |  |  | (56.4) | (59.2) | (43.9)
Other non-operating deductions, net |  |  |  | (4.7) | (4.9) | (3.8)
Unallocated corporate expenses |  |  |  | 11.7 | 12.1 | 8.3
Debt extinguishment expenses |  |  |  | (1.8) | 0.0 | (6.9)
Non-cash pension settlement charge |  |  |  | 0.0 | 0.0 | (3.5)
Corporate [Member] | Engineered Solutions [Member] |  |  |  |  |  |
Segment Reporting Information [Abstract] |  |  |  |  |  |
Segment assets | $ 76.5 |  |  | 76.5 | 73.3 | 106.6
Capital expenditures |  |  |  | $ 5.0 | $ 5.5 | $ 4.0

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