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