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Business Segments | 9 Months Ended
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Sep. 30, 2021
Segment Reporting [Abstract] |
Business Segments |
1 1. | Business Segments
The Building Materials business contains two reportable segments: the East Group and the West Group. The Company also has a Magnesia Specialties segment. The Company’s evaluation of performance and allocation of resources are based primarily on earnings from operations. Consolidated earnings from operations include total revenues less cost of revenues; selling, general and administrative expenses; acquisition-related expenses; other operating income and expenses, net; and exclude interest expense; other nonoperating income and expenses, net; and income taxes. Corporate loss from operations primarily includes depreciation; expenses for corporate administrative functions; acquisition-related expenses; and other nonrecurring income and expenses excluded from the Company’s evaluation of business segment performance and resource allocation. All long-term debt and related interest expense are held at Corporate. 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, exclude intersegment revenues, which represent sales from one segment to another segment and are eliminated in consolidation.
|  | Three Months Ended |  |  | Nine Months Ended |
|  | September 30, |  |  | September 30, |
|  | 2021 |  |  | 2020 |  |  | 2021 |  |  | 2020 |
|  | (Dollars in Millions) |
Total revenues: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
East Group |  | $ | 684.1 |  |  | $ | 549.3 |  |  | $ | 1,714.4 |  |  | $ | 1,465.9 |
West Group |  |  | 794.8 |  |  |  | 711.2 |  |  |  | 1,978.2 |  |  |  | 1,904.2 |
Total Building Materials business |  |  | 1,478.9 |  |  |  | 1,260.5 |  |  |  | 3,692.6 |  |  |  | 3,370.1 |
Magnesia Specialties |  |  | 78.4 |  |  |  | 60.9 |  |  |  | 225.0 |  |  |  | 180.2 |
Total |  | $ | 1,557.3 |  |  | $ | 1,321.4 |  |  | $ | 3,917.6 |  |  | $ | 3,550.3 |
Products and services revenues: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
East Group |  | $ | 641.8 |  |  | $ | 514.1 |  |  | $ | 1,610.9 |  |  | $ | 1,371.8 |
West Group |  |  | 749.0 |  |  |  | 671.4 |  |  |  | 1,861.9 |  |  |  | 1,785.4 |
Total Building Materials business |  |  | 1,390.8 |  |  |  | 1,185.5 |  |  |  | 3,472.8 |  |  |  | 3,157.2 |
Magnesia Specialties |  |  | 71.9 |  |  |  | 55.2 |  |  |  | 207.1 |  |  |  | 164.0 |
Total |  | $ | 1,462.7 |  |  | $ | 1,240.7 |  |  | $ | 3,679.9 |  |  | $ | 3,321.2 |
Earnings (Loss) from operations: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
East Group |  | $ | 205.8 |  |  | $ | 181.4 |  |  | $ | 465.3 |  |  | $ | 386.1 |
West Group |  |  | 150.6 |  |  |  | 212.3 |  |  |  | 284.2 |  |  |  | 368.2 |
Total Building Materials business |  |  | 356.4 |  |  |  | 393.7 |  |  |  | 749.5 |  |  |  | 754.3 |
Magnesia Specialties |  |  | 23.1 |  |  |  | 16.4 |  |  |  | 69.8 |  |  |  | 51.2 |
Corporate |  |  | (22.6 | ) |  |  | (9.5 | ) |  |  | (55.6 | ) |  |  | (40.7 | )
Total |  | $ | 356.9 |  |  | $ | 400.6 |  |  | $ | 763.7 |  |  | $ | 764.8 |
|  | September 30, 2021 |  |  | December 31, 2020 |
Assets employed: |  | (Dollars in Millions) |
East Group |  | $ | 5,075.9 |  |  | $ | 4,342.5 |
West Group |  |  | 5,613.4 |  |  |  | 5,355.5 |
Total Building Materials business |  |  | 10,689.3 |  |  |  | 9,698.0 |
Magnesia Specialties |  |  | 169.6 |  |  |  | 167.9 |
Corporate |  |  | 2,927.3 |  |  |  | 714.9 |
Total |  | $ | 13,786.2 |  |  | $ | 10,580.8 |
The increase in assets from December 31, 2020 to September 30, 2021 primarily relates to the proceeds from the Senior Notes issued in July 2021, new right-of-use assets for finance leases and the Tiller and SCC acquisitions. The proceeds from the Senior Notes issuance are reflected as Corporate assets as of September 30, 2021.

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8924-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8981-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8721-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9031-108599 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8844-108599 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9038-108599 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9054-108599 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8657-108599 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8721-108599 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -URI http://asc.fasb.org/topic&trid=2134510 + Details
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