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Business Segments (Tables) | 6 Months Ended
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Jun. 30, 2022
Segment Reporting [Abstract] |
Financial Data for Continuing Operation for Company's Reportable Business Segments | The following table displays selected financial data for the Company’s reportable segments. Total revenues, as well as the consolidated statements of earnings and comprehensive earnings, exclude intersegment revenues, which represent sales from one segment to another segment and are eliminated in consolidation. Total revenues, product and services revenues, and earnings (loss) from operations reflect continuing operations only. In 2022, earnings from operations for the West Group include nonrecurring gains on divested assets of $151.7 million.
|  | Three Months Ended |  |  | Six Months Ended |
|  | June 30, |  |  | June 30, |
|  | 2022 |  |  | 2021 |  |  | 2022 |  |  | 2021 |
|  | (Dollars in Millions) |
Total revenues: |  |  |  |  |  |  |  |  |  |  |  |
East Group |  | $ | 674.5 |  |  | $ | 635.3 |  |  | $ | 1,093.3 |  |  | $ | 1,030.2 |
West Group |  |  | 885.5 |  |  |  | 666.8 |  |  |  | 1,620.5 |  |  |  | 1,183.4 |
Total Building Materials business |  |  | 1,560.0 |  |  |  | 1,302.1 |  |  |  | 2,713.8 |  |  |  | 2,213.6 |
Magnesia Specialties |  |  | 81.7 |  |  |  | 75.8 |  |  |  | 158.7 |  |  |  | 146.7 |
Total |  | $ | 1,641.7 |  |  | $ | 1,377.9 |  |  | $ | 2,872.5 |  |  | $ | 2,360.3 |
Products and services revenues: |  |  |  |  |  |  |  |  |  |  |  |
East Group |  | $ | 632.4 |  |  | $ | 596.5 |  |  | $ | 1,027.0 |  |  | $ | 969.1 |
West Group |  |  | 816.8 |  |  |  | 628.8 |  |  |  | 1,499.2 |  |  |  | 1,112.9 |
Total Building Materials business |  |  | 1,449.2 |  |  |  | 1,225.3 |  |  |  | 2,526.2 |  |  |  | 2,082.0 |
Magnesia Specialties |  |  | 74.6 |  |  |  | 70.0 |  |  |  | 145.4 |  |  |  | 135.2 |
Total |  | $ | 1,523.8 |  |  | $ | 1,295.3 |  |  | $ | 2,671.6 |  |  | $ | 2,217.2 |
Earnings (Loss) from operations: |  |  |  |  |  |  |  |  |  |  |  |
East Group |  | $ | 210.6 |  |  | $ | 197.8 |  |  | $ | 238.5 |  |  | $ | 259.5 |
West Group |  |  | 274.5 |  |  |  | 101.8 |  |  |  | 317.6 |  |  |  | 133.6 |
Total Building Materials business |  |  | 485.1 |  |  |  | 299.6 |  |  |  | 556.1 |  |  |  | 393.1 |
Magnesia Specialties |  |  | 20.3 |  |  |  | 23.1 |  |  |  | 41.8 |  |  |  | 46.7 |
Corporate |  |  | (26.8 | ) |  |  | (15.2 | ) |  |  | (59.5 | ) |  |  | (33.0 | )
Total |  | $ | 478.6 |  |  | $ | 307.5 |  |  | $ | 538.4 |  |  | $ | 406.8 |

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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8736-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8813-108599 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8906-108599 + Details
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