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Segments | 9 Months Ended
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Sep. 30, 2023
Segment Reporting [Abstract] |
Segments | 9. Segments The Building Materials business contains two reportable segments: the East Group and the West Group. The Company also has a Magnesia Specialties reportable segment. The Company’s evaluation of performance and allocation of resources are based primarily on earnings from operations. Segment earnings from operations include total revenues less cost of revenues; selling, general and administrative expenses; other operating income and expenses, net; and exclude interest expense; other nonoperating income and expenses, net; and income tax expense. Corporate loss from operations primarily includes depreciation; expenses for corporate administrative functions; acquisition and integration expenses; and other nonrecurring income and expenses not attributable to operations of the Company's operating segments. The following table displays selected financial data for the Company’s reportable segments. Total revenues, as presented on the consolidated statements of earnings and comprehensive earnings, reflect the elimination of intersegment revenues, which represent sales from one segment to another segment. Total revenues and earnings (loss) from operations reflect continuing operations only. For the nine months ended September 30, 2022, earnings from operations for the West Group included a nonrecurring gain on divested assets of $151.9 million.
|  | Three Months Ended |  |  | Nine Months Ended |
|  | September 30, |  |  | September 30, |
|  | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |
|  | (Dollars in Millions) |
Total revenues: |  |  |  |  |  |  |  |  |  |  |  |
East Group |  | $ | 814.3 |  |  | $ | 773.6 |  |  | $ | 2,079.0 |  |  | $ | 1,866.9 |
West Group |  |  | 1,104.3 |  |  |  | 962.4 |  |  |  | 2,850.6 |  |  |  | 2,582.9 |
Total Building Materials business |  |  | 1,918.6 |  |  |  | 1,736.0 |  |  |  | 4,929.6 |  |  |  | 4,449.8 |
Magnesia Specialties |  |  | 75.5 |  |  |  | 75.7 |  |  |  | 239.4 |  |  |  | 234.4 |
Total |  | $ | 1,994.1 |  |  | $ | 1,811.7 |  |  | $ | 5,169.0 |  |  | $ | 4,684.2 |
Earnings (Loss) from operations: |  |  |  |  |  |  |  |  |  |  |  |
East Group |  | $ | 295.2 |  |  | $ | 239.4 |  |  | $ | 631.6 |  |  | $ | 478.0 |
West Group |  |  | 283.0 |  |  |  | 159.7 |  |  |  | 617.3 |  |  |  | 477.2 |
Total Building Materials business |  |  | 578.2 |  |  |  | 399.1 |  |  |  | 1,248.9 |  |  |  | 955.2 |
Magnesia Specialties |  |  | 16.9 |  |  |  | 16.5 |  |  |  | 60.8 |  |  |  | 58.4 |
Total reportable segments |  |  | 595.1 |  |  |  | 415.6 |  |  |  | 1,309.7 |  |  |  | 1,013.6 |
Corporate |  |  | (28.5 | ) |  |  | (9.7 | ) |  |  | (83.8 | ) |  |  | (69.2 | )
Consolidated earnings from operations |  |  | 566.6 |  |  |  | 405.9 |  |  |  | 1,225.9 |  |  |  | 944.4 |
Interest expense |  |  | 40.8 |  |  |  | 42.8 |  |  |  | 125.1 |  |  |  | 126.4 |
Other nonoperating income, net |  |  | (14.3 | ) |  |  | (7.3 | ) |  |  | (49.2 | ) |  | $ | (40.1 | )
Consolidated earnings from continuing operations before income tax expense |  | $ | 540.1 |  |  | $ | 370.4 |  |  | $ | 1,150.0 |  |  | $ | 858.1 |

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-22 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-15 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 31 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-31 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-32 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-42 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-32 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 40 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-40 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//280/tableOfContent Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 26 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-26 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 34 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-34 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 41 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-41 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 21 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-21 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 21 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-21 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-32 + Details
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