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v3.20.4

Segment and Related Information, Segment Information (Details) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 USD ($) | Sep. 27, 2020 USD ($) | Jun. 28, 2020 USD ($) | Mar. 29, 2020 USD ($) | Dec. 31, 2019 USD ($) | Sep. 29, 2019 USD ($) | Jun. 30, 2019 USD ($) | Mar. 31, 2019 USD ($) | Dec. 31, 2020 USD ($) Segment | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Segment and Related Information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Number of reportable segments | Segment |  |  |  |  |  |  |  |  | 4 |  |
Segment Reporting Information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales | $ 431.8 | $ 388.3 | $ 357.2 | $ 417.5 | $ 440.2 | $ 449.3 | $ 463.8 | $ 437.7 | $ 1,594.8 | $ 1,791.0 | $ 1,807.6
Income from operations | 54.5 | 48.5 | 27.2 | 57.7 | 47.7 | 53.5 | 45.5 | 62.0 | 187.9 | 208.7 | 255.9
Depreciation, depletion and amortization |  |  |  |  |  |  |  |  | 93.9 | 98.4 | 94.3
Segment assets | 3,209.4 |  |  |  | 3,112.6 |  |  |  | 3,209.4 | 3,112.6 | 3,087.1
Capital expenditures |  |  |  |  |  |  |  |  | 66.8 | 65.0 | 75.9
Income from Operations before Tax and Equity in Earnings [Abstract] |  |  |  |  |  |  |  |  |  |  |
Litigation expenses |  |  |  |  |  |  |  |  | (10.4) | (10.9) | 0.0
Acquisition-related expenses |  |  |  |  |  |  |  |  | (3.1) | 0.0 | (1.7)
Unallocated corporate expenses |  |  |  |  |  |  |  |  | (10.7) | (8.2) | (4.5)
Consolidated income from operations | 54.5 | 48.5 | 27.2 | 57.7 | 47.7 | 53.5 | 45.5 | 62.0 | 187.9 | 208.7 | 255.9
Non-operating deductions, net |  |  |  |  |  |  |  |  | (49.9) | (51.4) | (51.8)
Income from operations before provision for taxes and equity in earnings |  |  |  |  |  |  |  |  | 138.0 | 157.3 | 204.1
Performance Materials [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales | 202.2 | 190.6 | 173.8 | 186.2 | 201.4 | 207.3 | 215.4 | 199.2 | 752.8 | 823.3 | 828.1
Specialty Minerals [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales | 138.9 | 125.1 | 109.8 | 137.1 | 141.8 | 143.1 | 145.1 | 144.4 | 510.9 | 574.4 | 589.3
Refractories [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales | 73.9 | 59.3 | 55.9 | 69.0 | 73.4 | 73.4 | 77.5 | 73.8 | 258.1 | 298.1 | 311.9
Energy Services [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales | 16.8 | $ 13.3 | $ 17.7 | $ 25.2 | 23.6 | $ 25.5 | $ 25.8 | $ 20.3 | 73.0 | 95.2 | 78.3
Reportable Segments [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 1,594.8 | 1,791.0 | 1,807.6
Income from operations |  |  |  |  |  |  |  |  | 212.1 | 227.8 | 262.1
Depreciation, depletion and amortization |  |  |  |  |  |  |  |  | 93.9 | 98.4 | 94.3
Segment assets | 3,069.5 |  |  |  | 3,031.0 |  |  |  | 3,069.5 | 3,031.0 | 3,038.6
Capital expenditures |  |  |  |  |  |  |  |  | 66.6 | 64.9 | 74.7
Income from Operations before Tax and Equity in Earnings [Abstract] |  |  |  |  |  |  |  |  |  |  |
Consolidated income from operations |  |  |  |  |  |  |  |  | 212.1 | 227.8 | 262.1
Reportable Segments [Member] | Performance Materials [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 752.8 | 823.3 | 828.1
Income from operations |  |  |  |  |  |  |  |  | 103.6 | 97.1 | 116.8
Depreciation, depletion and amortization |  |  |  |  |  |  |  |  | 41.4 | 43.6 | 41.1
Segment assets | 2,111.6 |  |  |  | 2,091.2 |  |  |  | 2,111.6 | 2,091.2 | 2,119.7
Capital expenditures |  |  |  |  |  |  |  |  | 10.0 | 16.8 | 22.4
Income from Operations before Tax and Equity in Earnings [Abstract] |  |  |  |  |  |  |  |  |  |  |
Consolidated income from operations |  |  |  |  |  |  |  |  | 103.6 | 97.1 | 116.8
Reportable Segments [Member] | Specialty Minerals [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 510.9 | 574.4 | 589.3
Income from operations |  |  |  |  |  |  |  |  | 67.8 | 83.1 | 95.4
Depreciation, depletion and amortization |  |  |  |  |  |  |  |  | 39.6 | 40.4 | 38.2
Segment assets | 559.6 |  |  |  | 525.1 |  |  |  | 559.6 | 525.1 | 511.9
Capital expenditures |  |  |  |  |  |  |  |  | 46.5 | 37.7 | 42.4
Income from Operations before Tax and Equity in Earnings [Abstract] |  |  |  |  |  |  |  |  |  |  |
Consolidated income from operations |  |  |  |  |  |  |  |  | 67.8 | 83.1 | 95.4
Reportable Segments [Member] | Refractories [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 258.1 | 298.1 | 311.9
Income from operations |  |  |  |  |  |  |  |  | 35.5 | 39.8 | 45.4
Depreciation, depletion and amortization |  |  |  |  |  |  |  |  | 6.9 | 7.0 | 6.6
Segment assets | 290.8 |  |  |  | 293.2 |  |  |  | 290.8 | 293.2 | 296.6
Capital expenditures |  |  |  |  |  |  |  |  | 5.5 | 5.7 | 5.0
Income from Operations before Tax and Equity in Earnings [Abstract] |  |  |  |  |  |  |  |  |  |  |
Consolidated income from operations |  |  |  |  |  |  |  |  | 35.5 | 39.8 | 45.4
Reportable Segments [Member] | Energy Services [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 73.0 | 95.2 | 78.3
Income from operations |  |  |  |  |  |  |  |  | 5.2 | 7.8 | 4.5
Depreciation, depletion and amortization |  |  |  |  |  |  |  |  | 6.0 | 7.4 | 8.4
Segment assets | 107.5 |  |  |  | 121.5 |  |  |  | 107.5 | 121.5 | 110.4
Capital expenditures |  |  |  |  |  |  |  |  | 4.6 | 4.7 | 4.9
Income from Operations before Tax and Equity in Earnings [Abstract] |  |  |  |  |  |  |  |  |  |  |
Consolidated income from operations |  |  |  |  |  |  |  |  | 5.2 | 7.8 | 4.5
Unallocated and Other Corporate Expenses [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Segment assets | $ 139.9 |  |  |  | $ 81.6 |  |  |  | 139.9 | 81.6 | 48.5
Capital expenditures |  |  |  |  |  |  |  |  | $ 0.2 | $ 0.1 | $ 1.2

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