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Business Combinations and Divestitures - Additional Information (Detail) Tons in Millions, $ in Millions |  |  |  |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | --- | --- | --- | ---
Aug. 03, 2025 USD ($) Tons | Apr. 05, 2024 USD ($) Facility | Feb. 09, 2024 USD ($) Plant | Jan. 12, 2024 | Jun. 30, 2025 USD ($) | Jun. 30, 2024 USD ($) | Jun. 30, 2025 USD ($) | Jun. 30, 2024 USD ($)
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Revenues |  |  |  |  | $ 1,811 | $ 1,764 | $ 3,164 | $ 3,015
Pretax earnings |  |  |  |  | $ 458 | 398 | $ 652 | 1,819
Business combination periods for production level |  |  |  | 60 years |  |  |  |
Revenues |  |  | $ 2,100 |  |  |  |  |
Divestitures number of south texas ready mix operations | Plant |  |  | 20 |  |  |  |  |
Pretax gain |  |  |  |  |  |  |  | 1,300
Quikrete [Member] |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Production capacity of aggregate operations | Tons | 20 |  |  |  |  |  |  |
Proceeds from exchange of certain assets | $ 450 |  |  |  |  |  |  |
Blue Water Industries LLC |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  | 83 |  | 97
Pretax earnings |  |  |  |  |  | 11 |  | 12
Number of active aggregates operations | Facility |  | 20 |  |  |  |  |  |
Payments to acquire businesses gross |  | $ 2,050 |  |  |  |  |  |
Charges for selling acquired inventory |  |  |  |  |  | $ 20 |  | $ 20

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