Revenues and Gross Profit - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Revenue Recognition [Line Items]
Gross profit	$ 272	$ 303
Performance obligations, description of timing	Performance obligations within paving service agreements are satisfied over time, primarily ranging from one day to two years. Customer payments for the paving operations are based on a contractual billing schedule and are typically paid-when-paid.
Future revenues from unsatisfied performance obligations	$ 246	241
Service revenues	1,251	1,354
Revenue recognized from contract liabilities	4	5
Retainage on contracts	11		$ 17
Interproduct Revenues
Revenue Recognition [Line Items]
Service revenues	(39)	(39)
West Group | Operating Segments
Revenue Recognition [Line Items]
Service revenues	644	741
Service | CALIFORNIA and COLORADO | West Group
Revenue Recognition [Line Items]
Service revenues	$ 26	26
Cement | Operating Segments
Revenue Recognition [Line Items]
Gross profit		47
Service revenues		169
Ready Mixed Concrete | Operating Segments
Revenue Recognition [Line Items]
Gross profit		11
Service revenues		220
Ready Mixed Concrete | Operating Segments | Interproduct Revenues
Revenue Recognition [Line Items]
Service revenues		$ 49
Minimum | Service
Revenue Recognition [Line Items]
Performance obligations, period	1 day
Maximum | Service
Revenue Recognition [Line Items]
Performance obligations, period	2 years