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Business Combinations and Discontinued Operations - Additional Information (Detail) $ in Millions |  |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Oct. 01, 2021 USD ($) State Plant Quarry | Jul. 30, 2021 | Apr. 30, 2021 | Dec. 31, 2021 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
Business Acquisition [Line Items] |  |  |  |  |  |  |
Acquisition-related expenses, net |  |  |  |  | $ 57.9 | $ 1.3 | $ 0.5
Total Revenues |  |  |  |  | 5,414.0 | 4,729.9 | 4,739.1
Earnings from operations |  |  |  |  | 973.8 | 1,005.4 | $ 884.9
Cash operating activities related to discontinued operations |  |  |  |  | 11.9 |  |
Cash investing activities related to discontinued operations |  |  |  |  | 11.9 |  |
Non cash operating activities related to discontinued operations |  |  |  |  | 14.8 |  |
Non cash investing activities related to discontinued operations |  |  |  |  | 14.8 |  |
Operating lease, right-of-use asset |  |  |  |  | 19.7 |  |
Finance lease, right-of-use asset |  |  |  |  | 19.7 |  |
Cement and California Ready Mix Businesses |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Amortization or depreciation expense |  |  |  | $ 0.0 |  |  |
Tiller Corporation |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Business combination, effective date |  |  | Apr. 30, 2021 |  |  |  |
Lehigh West Region |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Business combination, effective date | Oct. 01, 2021 |  |  |  |  |  |
Cash transferred in business combination | $ 2,280.0 |  |  |  |  |  |
Business combination, number of active aggregate quarries acquired | Quarry | 17 |  |  |  |  |  |
Business combination, number of cement plants acquired | Plant | 2 |  |  |  |  |  |
Business combination, number of states targeted for downstream operations | State | 4 |  |  |  |  |  |
Business acquisition, percentage of voting interests acquired | 100.00% |  |  |  |  |  |
Acquisition-related expenses, net |  |  |  |  | 57.9 |  |
Lehigh West Region | Pro Forma |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Acquisition-related expenses, net |  |  |  |  |  | $ 46.8 |
Southern Crushed Concrete |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Business combination, effective date |  | Jul. 30, 2021 |  |  |  |  |
Lehigh West Region, SCC and Tiller |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Total Revenues |  |  |  |  | 338.6 |  |
Earnings from operations |  |  |  |  | $ 12.1 |  |

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