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Revenue Recognition (Tables) | 9 Months Ended
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Sep. 30, 2022
Revenue from Contract with Customer [Abstract] |
Schedule of Company's Total Revenues by Category for each Reportable Segment | The following table presents the Company’s total revenues by category for each reportable segment.
|  | Three Months Ended |
|  | September 30, 2022 |
|  | Products and Services |  |  | Freight |  |  | Total |
|  | (Dollars in Millions) |
East Group |  | $ | 728.5 |  |  | $ | 45.1 |  |  | $ | 773.6 |
West Group |  |  | 883.0 |  |  |  | 79.4 |  |  |  | 962.4 |
Total Building Materials business |  |  | 1,611.5 |  |  |  | 124.5 |  |  |  | 1,736.0 |
Magnesia Specialties |  |  | 69.0 |  |  |  | 6.7 |  |  |  | 75.7 |
Total |  | $ | 1,680.5 |  |  | $ | 131.2 |  |  | $ | 1,811.7 |
|  | Three Months Ended |
|  | September 30, 2021 |
|  | Products and Services |  |  | Freight |  |  | Total |
|  | (Dollars in Millions) |
East Group |  | $ | 641.8 |  |  | $ | 42.3 |  |  | $ | 684.1 |
West Group |  |  | 749.0 |  |  |  | 45.8 |  |  |  | 794.8 |
Total Building Materials business |  |  | 1,390.8 |  |  |  | 88.1 |  |  |  | 1,478.9 |
Magnesia Specialties |  |  | 71.9 |  |  |  | 6.5 |  |  |  | 78.4 |
Total |  | $ | 1,462.7 |  |  | $ | 94.6 |  |  | $ | 1,557.3 |
|  | Nine Months Ended |
|  | September 30, 2022 |
|  | Products and Services |  |  | Freight |  |  | Total |
|  | (Dollars in Millions) |
East Group |  | $ | 1,755.5 |  |  | $ | 111.4 |  |  | $ | 1,866.9 |
West Group |  |  | 2,382.2 |  |  |  | 200.7 |  |  |  | 2,582.9 |
Total Building Materials business |  |  | 4,137.7 |  |  |  | 312.1 |  |  |  | 4,449.8 |
Magnesia Specialties |  |  | 214.4 |  |  |  | 20.0 |  |  |  | 234.4 |
Total |  | $ | 4,352.1 |  |  | $ | 332.1 |  |  | $ | 4,684.2 |
|  | Nine Months Ended |
|  | September 30, 2021 |
|  | Products and Services |  |  | Freight |  |  | Total |
|  | (Dollars in Millions) |
East Group |  | $ | 1,610.9 |  |  | $ | 103.5 |  |  | $ | 1,714.4 |
West Group |  |  | 1,861.9 |  |  |  | 116.3 |  |  |  | 1,978.2 |
Total Building Materials business |  |  | 3,472.8 |  |  |  | 219.8 |  |  |  | 3,692.6 |
Magnesia Specialties |  |  | 207.1 |  |  |  | 17.9 |  |  |  | 225.0 |
Total |  | $ | 3,679.9 |  |  | $ | 237.7 |  |  | $ | 3,917.6 |
Summary of Information About the Company's Contract Balances | The following table presents information about the Company’s contract balances:
(Dollars in Millions) |  | September 30, 2022 |  |  | December 31, 2021 |
Costs in excess of billings |  | $ | 19.9 |  |  | $ | 4.3 |
Billings in excess of costs |  | $ | 9.9 |  |  | $ | 7.8 |

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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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