Revenues and Gross Profit - Total Revenues and Gross Profit (Loss) by Product Line (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Product Information [Line Items]
Revenues	$ 1,889	$ 1,994	$ 4,905	$ 5,169
Gross profit (loss)	599	676	1,388	1,539
Interproduct Revenues
Product Information [Line Items]
Revenues	(82)	(80)	(184)	(184)
Corporate
Product Information [Line Items]
Gross profit (loss)	(18)	5	(34)	4
Building Materials Business | Operating Segments
Product Information [Line Items]
Revenues	1,807	1,918	4,662	4,930
Gross profit (loss)	588	650	1,338	1,461
Magnesia Specialties | Operating Segments
Product Information [Line Items]
Revenues	82	76	243	239
Gross profit (loss)	29	21	84	74
Aggregates | Building Materials Business | Operating Segments | Reportable Subsegments
Product Information [Line Items]
Revenues	1,250	1,216	3,377	3,280
Gross profit (loss)	438	441	1,069	1,050
Cement and ready mixed concrete | Building Materials Business | Operating Segments | Reportable Subsegments
Product Information [Line Items]
Revenues	296	422	822	1,175
Gross profit (loss)	89	143	192	329
Asphalt and paving services | Building Materials Business | Operating Segments | Reportable Subsegments
Product Information [Line Items]
Revenues	343	360	647	659
Gross profit (loss)	$ 61	$ 66	$ 77	$ 82