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v3.23.1

Revenues and Gross Profit (Tables) | 3 Months Ended
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Mar. 31, 2023
Revenues And Gross Profit [Abstract] |
Summary of Information About the Company's Contract Balances | The following table presents information about the Company’s contract balances:
|  | March 31, 2023 |  |  | December 31, 2022 |
|  | (Dollars in Millions) |
Costs in excess of billings |  | $ | 4.9 |  |  | $ | 5.1 |
Billings in excess of costs |  | $ | 7.5 |  |  | $ | 10.5 |
Total Revenues and Gross Profit (Loss) by Product Line | The following table, which is reconciled to consolidated amounts, provides total revenues and gross profit (loss) by line of business: Building Materials (further divided by product line) and Magnesia Specialties. Interproduct revenues represent sales from the aggregates product line to the ready mixed concrete and asphalt and paving product lines and sales from the cement product line to the ready mixed concrete product line. Total revenues and gross profit (loss) reflect continuing operations only.
|  | Three Months Ended |  |
|  | March 31, |  |
|  | 2023 |  |  | 2022 |  |
|  | (Dollars in Millions)
Total revenues: |  |  |  |  |  |  |
Building Materials business: |  |  |  |  |  |  |
Aggregates |  | $ | 911.9 |  |  | $ | 756.6 |  |
Cement |  |  | 168.6 |  |  |  | 138.3 |  |
Ready mixed concrete |  |  | 220.0 |  |  |  | 291.1 |  |
Asphalt and paving services |  |  | 58.0 |  |  |  | 56.8 |  |
Less: interproduct revenues |  |  | (87.8 | ) |  |  | (89.0 | ) |
Total Building Materials business |  |  | 1,270.7 |  |  |  | 1,153.8 |  |
Magnesia Specialties |  |  | 83.4 |  |  |  | 77.0 |  |
Total |  | $ | 1,354.1 |  |  | $ | 1,230.8 |  |
Gross profit (loss): |  |  |  |  |  |  |
Building Materials business: |  |  |  |  |  |  |
Aggregates |  | $ | 238.1 |  |  | $ | 102.8 |  |
Cement |  |  | 47.1 |  |  |  | 26.9 |  |
Ready mixed concrete |  |  | 11.2 |  |  |  | 21.9 |  |
Asphalt and paving services |  |  | (20.5 | ) |  |  | (13.2 | ) |
Total Building Materials business |  |  | 275.9 |  |  |  | 138.4 |  |
Magnesia Specialties |  |  | 25.0 |  |  |  | 25.6 |  |
Corporate |  |  | 1.9 |  |  |  | (7.9 | ) |
Total |  | $ | 302.8 |  |  | $ | 156.1 |  |

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130551-203045 + Details
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