Revenues and Gross Profit - Total Revenues and Gross Profit (Loss) by Product Line (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Product Information [Line Items]
Revenues	$ 1,764	$ 1,821	$ 3,015	$ 3,175
Gross profit (loss)	517	560	790	863
Interproduct Revenues
Product Information [Line Items]
Revenues	(65)	(65)	(102)	(104)
Corporate
Product Information [Line Items]
Gross profit (loss)	(11)	(4)	(16)	(2)
Building Materials Business | Operating Segments
Product Information [Line Items]
Revenues	1,683	1,740	2,854	3,011
Gross profit (loss)	501	536	750	812
Magnesia Specialties | Operating Segments
Product Information [Line Items]
Revenues	81	81	161	164
Gross profit (loss)	27	28	56	53
Aggregates | Building Materials Business | Operating Segments | Reportable Subsegments
Product Information [Line Items]
Revenues	1,242	1,151	2,127	2,063
Gross profit (loss)	392	371	632	609
Cement and ready mixed concrete | Building Materials Business | Operating Segments | Reportable Subsegments
Product Information [Line Items]
Revenues	261	413	526	753
Gross profit (loss)	72	129	103	187
Asphalt and paving services | Building Materials Business | Operating Segments | Reportable Subsegments
Product Information [Line Items]
Revenues	245	241	303	299
Gross profit (loss)	$ 37	$ 36	$ 15	$ 16