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Property, Plant, and Equipment (Tables) | 9 Months Ended
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Sep. 30, 2023
Property, Plant and Equipment [Abstract] |
Components of property, plant, and equipment | The following table summarizes the components of property, plant, and equipment as of September 30, 2023 and December 31, 2022.
| September 30, 2023 |  | December 31, 2022
| (in millions)
Land | $ | 140.1 |  |  | $ | 138.7 |
Mineral reserves | 517.3 |  |  | 506.3 |
Buildings and improvements | 327.4 |  |  | 308.3 |
Machinery and other | 1,052.1 |  |  | 973.9 |
Construction in progress | 118.9 |  |  | 83.7 |
| 2,155.8 |  |  | 2,010.9 |
Less accumulated depreciation and depletion | (901.2) |  |  | (811.3) |
| $ | 1,254.6 |  |  | $ | 1,199.6 |

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 10 -Topic 360 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482099/360-10-50-1 + Details
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