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v3.22.4

Segment and Related Information, Segment Information (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 USD ($) Segment | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Segment and Related Information [Abstract] |  |  |
Number of reportable segments | Segment | 3 |  |
Segment Reporting Information [Abstract] |  |  |
Net sales | $ 2,125.5 | $ 1,858.3 | $ 1,594.8
Income from operations | 214.8 | 235.7 | 187.9
Depreciation, depletion and amortization | 94.2 | 94.6 | 93.9
Segment assets | 3,401.6 | 3,374.2 | 3,209.4
Capital expenditures | 82.3 | 86.0 | 66.8
Segment and Related Information [Abstract] |  |  |
Litigation expenses | (32.6) | 0.0 | (10.4)
Acquisition related transaction and integration costs | (5.1) | (4.0) | (3.1)
Income from operations | 214.8 | 235.7 | 187.9
Non-operating deductions, net | (58.1) | (33.4) | (49.9)
Income before tax and equity in earnings | 156.7 | 202.3 | 138.0
Performance Materials [Member] |  |  |
Segment Reporting Information [Abstract] |  |  |
Net sales | 1,127.7 | 976.0 | 825.8
Specialty Minerals [Member] |  |  |
Segment Reporting Information [Abstract] |  |  |
Net sales | 648.4 | 578.9 | 510.9
Refractories [Member] |  |  |
Segment Reporting Information [Abstract] |  |  |
Net sales | 349.4 | 303.4 | 258.1
Reportable Segments [Member] |  |  |
Segment Reporting Information [Abstract] |  |  |
Net sales | 2,125.5 | 1,858.3 | 1,594.8
Income from operations | 226.1 | 247.2 | 212.1
Depreciation, depletion and amortization | 94.2 | 94.6 | 93.9
Segment assets | 3,355.1 | 3,292.2 | 3,069.5
Capital expenditures | 81.0 | 83.4 | 66.6
Segment and Related Information [Abstract] |  |  |
Income from operations | 226.1 | 247.2 | 212.1
Reportable Segments [Member] | Performance Materials [Member] |  |  |
Segment Reporting Information [Abstract] |  |  |
Net sales | 1,127.7 | 976.0 | 825.8
Income from operations | 127.2 | 125.0 | 108.8
Depreciation, depletion and amortization | 50.7 | 49.2 | 47.4
Segment assets | 2,442.1 | 2,393.2 | 2,219.1
Capital expenditures | 30.8 | 22.0 | 14.6
Segment and Related Information [Abstract] |  |  |
Income from operations | 127.2 | 125.0 | 108.8
Reportable Segments [Member] | Specialty Minerals [Member] |  |  |
Segment Reporting Information [Abstract] |  |  |
Net sales | 648.4 | 578.9 | 510.9
Income from operations | 41.3 | 72.9 | 67.8
Depreciation, depletion and amortization | 37.2 | 38.4 | 39.6
Segment assets | 609.3 | 605.9 | 559.6
Capital expenditures | 39.8 | 51.7 | 46.5
Segment and Related Information [Abstract] |  |  |
Income from operations | 41.3 | 72.9 | 67.8
Reportable Segments [Member] | Refractories [Member] |  |  |
Segment Reporting Information [Abstract] |  |  |
Net sales | 349.4 | 303.4 | 258.1
Income from operations | 57.6 | 49.3 | 35.5
Depreciation, depletion and amortization | 6.3 | 7.0 | 6.9
Segment assets | 303.7 | 293.1 | 290.8
Capital expenditures | 10.4 | 9.7 | 5.5
Segment and Related Information [Abstract] |  |  |
Income from operations | 57.6 | 49.3 | 35.5
Reconciling Item [Member] |  |  |
Segment and Related Information [Abstract] |  |  |
Litigation expenses | (1.5) | 0.0 | (10.4)
Acquisition related transaction and integration costs | (5.1) | (4.0) | (3.1)
Unallocated and Corporate [Member] |  |  |
Segment Reporting Information [Abstract] |  |  |
Income from operations | (4.7) | (7.5) | (10.7)
Segment assets | 46.5 | 82.0 | 139.9
Capital expenditures | 1.3 | 2.6 | 0.2
Segment and Related Information [Abstract] |  |  |
Income from operations | $ (4.7) | $ (7.5) | $ (10.7)

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