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v3.22.2.2

Segment and Related Information, Segment Information (Details) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 02, 2022 USD ($) | Oct. 03, 2021 USD ($) | Oct. 02, 2022 USD ($) Segment | Oct. 03, 2021 USD ($)
Segment and Related Information [Abstract] |  |  |  |
Number of reportable segments | Segment |  |  | 3 |
Net sales | $ 541.9 | $ 473.2 | $ 1,617.9 | $ 1,381.4
Income (loss) from operations | 35.6 | 60.6 | 171.2 | 183.1
Performance Materials [Member] |  |  |  |
Segment and Related Information [Abstract] |  |  |  |
Net sales | 290.4 | 250.4 | 862.1 | 719.7
Specialty Minerals [Member] |  |  |  |
Segment and Related Information [Abstract] |  |  |  |
Net sales | 166.0 | 146.9 | 493.3 | 437.4
Refractories [Member] |  |  |  |
Segment and Related Information [Abstract] |  |  |  |
Net sales | 85.5 | 75.9 | 262.5 | 224.3
Reportable Segments [Member] |  |  |  |
Segment and Related Information [Abstract] |  |  |  |
Net sales | 541.9 | 473.2 | 1,617.9 | 1,381.4
Income (loss) from operations | 36.1 | 62.5 | 178.0 | 191.8
Reportable Segments [Member] | Performance Materials [Member] |  |  |  |
Segment and Related Information [Abstract] |  |  |  |
Net sales | 290.4 | 250.4 | 862.1 | 719.7
Income (loss) from operations | 37.9 | 32.0 | 108.5 | 96.5
Reportable Segments [Member] | Specialty Minerals [Member] |  |  |  |
Segment and Related Information [Abstract] |  |  |  |
Net sales | 166.0 | 146.9 | 493.3 | 437.4
Income (loss) from operations | (14.2) | 17.3 | 24.4 | 58.4
Reportable Segments [Member] | Refractories [Member] |  |  |  |
Segment and Related Information [Abstract] |  |  |  |
Net sales | 85.5 | 75.9 | 262.5 | 224.3
Income (loss) from operations | $ 12.4 | $ 13.2 | $ 45.1 | $ 36.9

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