Revenues and Gross Profit - Total Revenues and Gross Profit by Product Line (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Product Information [Line Items]
Total Revenues	$ 6,160.7	$ 5,414.0	$ 4,729.9
Gross profit (loss)	1,423.3	1,348.4	1,252.8
Interproduct Revenues
Product Information [Line Items]
Total Revenues	(382.5)	(403.0)	(294.4)
Corporate
Product Information [Line Items]
Gross profit (loss)	(5.8)	2.0	7.5
Building Materials Business
Product Information [Line Items]
Total Revenues	5,856.7	5,115.3	4,487.2
Building Materials Business | Operating Segments
Product Information [Line Items]
Total Revenues	5,856.7	5,115.3	4,487.2
Gross profit (loss)	1,338.2	1,239.9	1,159.8
Building Materials Business | Operating Segments | Products and Services
Product Information [Line Items]
Total Revenues	5,452.5	4,810.0	4,211.2
Gross profit (loss)	1,336.2	1,236.6	1,159.4
Magnesia Specialties | Operating Segments
Product Information [Line Items]
Total Revenues	304.0	298.7	242.7
Gross profit (loss)	90.9	106.5	85.5
Magnesia Specialties | Operating Segments | Products and Services
Product Information [Line Items]
Total Revenues	278.0	274.7	220.9
Gross profit (loss)	95.5	110.4	89.6
Aggregates | Building Materials Business | Operating Segments | Reportable Subsegments | Products and Services
Product Information [Line Items]
Total Revenues	3,506.0	3,058.5	2,769.3
Gross profit (loss)	980.3	904.8	848.5
Cement | Building Materials Business | Operating Segments | Reportable Subsegments | Products and Services
Product Information [Line Items]
Total Revenues	602.3	494.5	452.5
Gross profit (loss)	204.4	157.0	170.9
Ready Mixed Concrete | Building Materials Business | Operating Segments | Reportable Subsegments | Products and Services
Product Information [Line Items]
Total Revenues	951.3	1,145.8	952.1
Gross profit (loss)	69.6	95.6	79.6
Asphalt and Paving | Building Materials Business | Operating Segments | Reportable Subsegments | Products and Services
Product Information [Line Items]
Total Revenues	775.4	514.2	331.7
Gross profit (loss)	81.9	79.2	60.4
Freight
Product Information [Line Items]
Total Revenues	430.2	329.3	297.8
Freight | Building Materials Business
Product Information [Line Items]
Total Revenues	404.2	305.3	276.0
Freight | Building Materials Business | Operating Segments
Product Information [Line Items]
Total Revenues	404.2	305.3	276.0
Gross profit (loss)	2.0	3.3	0.4
Freight | Magnesia Specialties | Operating Segments
Product Information [Line Items]
Total Revenues	26.0	24.0	21.8
Gross profit (loss)	$ (4.6)	$ (3.9)	$ (4.1)