Segments - Financial Data for Continuing Operation for Company's Reportable Business Segments (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Total Revenues	$ 6,777.2	$ 6,160.7	$ 5,414.0
Earnings (Loss) from operations	1,596.0	1,206.7	973.8
Interest expense	165.3	169.0	142.7
Other nonoperating income, net	(62.1)	(53.4)	(24.4)
Consolidated earnings from continuing operations before income tax expense	1,492.8	1,091.1	855.5
Assets employed	15,124.9	14,993.6	14,393.0
Depreciation, depletion and amortization	513.2	506.0	451.7
Total property additions, including the impact of acquisitions	626.2	544.4	1,541.5
Property additions through acquisitions	0.0	2.5	1,087.5
Reportable Segments
Segment Reporting Information [Line Items]
Earnings (Loss) from operations	1,710.2	1,303.5	1,097.7
Assets employed	13,077.8	13,164.0	13,442.5
Depreciation, depletion and amortization	490.6	483.2	431.3
Total property additions, including the impact of acquisitions	611.8	523.3	1,512.7
Property additions through acquisitions	0.0	2.5	1,087.5
Operating Segments
Segment Reporting Information [Line Items]
Earnings (Loss) from operations	1,634.2	1,228.3	1,006.9
Operating Segments | Building Materials Business East Group
Segment Reporting Information [Line Items]
Total Revenues	2,763.4	2,468.1	2,303.0
Earnings (Loss) from operations	857.1	640.2	621.7
Assets employed	5,131.1	5,063.5	5,009.0
Depreciation, depletion and amortization	210.1	210.4	196.0
Total property additions, including the impact of acquisitions	230.8	189.1	372.9
Property additions through acquisitions	0.0	0.0	169.2
Operating Segments | Building Materials Business West Group
Segment Reporting Information [Line Items]
Total Revenues	3,698.4	3,388.6	2,812.3
Earnings (Loss) from operations	777.1	588.1	385.2
Assets employed	7,696.7	7,908.4	8,264.8
Depreciation, depletion and amortization	268.0	260.6	223.0
Total property additions, including the impact of acquisitions	341.7	302.2	1,131.6
Property additions through acquisitions	0.0	2.5	918.3
Operating Segments | Building Materials Business
Segment Reporting Information [Line Items]
Total Revenues	6,461.8	5,856.7	5,115.3
Assets employed	12,827.8	12,971.9	13,273.8
Depreciation, depletion and amortization	478.1	471.0	419.0
Total property additions, including the impact of acquisitions	572.5	491.3	1,504.5
Property additions through acquisitions	0.0	2.5	1,087.5
Operating Segments | Magnesia Specialties
Segment Reporting Information [Line Items]
Total Revenues	315.4	304.0	298.7
Earnings (Loss) from operations	76.0	75.2	90.8
Assets employed	250.0	192.1	168.7
Depreciation, depletion and amortization	12.5	12.2	12.3
Total property additions, including the impact of acquisitions	39.3	32.0	8.2
Property additions through acquisitions	0.0	0.0	0.0
Corporate
Segment Reporting Information [Line Items]
Earnings (Loss) from operations	(114.2)	(96.8)	(123.9)
Assets employed	2,047.1	1,829.6	950.5
Depreciation, depletion and amortization	22.6	22.8	20.4
Total property additions, including the impact of acquisitions	14.4	21.1	28.8
Property additions through acquisitions	$ 0.0	$ 0.0	$ 0.0