Segments - Financial Data for Continuing Operations for Company's Reportable Segments (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting 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
Selling, general and administrative expenses	396.7	351.0	305.9
Earnings (Loss) from operations	1,206.7	973.8	1,005.4
Assets employed	14,993.6	14,393.0	10,580.8
Depreciation, depletion and amortization	506.0	451.7	393.5
Total property additions, including the impact of acquisitions	544.4	1,541.5	387.2
Property additions through acquisitions	2.5	1,087.5	20.0
Building Materials Business
Segment Reporting Information [Line Items]
Total Revenues	5,856.7	5,115.3	4,487.2
Earnings (Loss) from operations	1,228.3	1,006.9	993.4
Assets employed	12,971.9	13,273.8	9,698.0
Depreciation, depletion and amortization	471.0	419.0	364.5
Total property additions, including the impact of acquisitions	491.3	1,504.5	356.9
Property additions through acquisitions	2.5	1,087.5	20.0
Operating Segments | Building Materials Business East Group
Segment Reporting Information [Line Items]
Total Revenues	2,468.1	2,303.0	1,949.1
Earnings (Loss) from operations	640.2	621.7	522.1
Assets employed	5,063.5	5,009.0	4,342.5
Depreciation, depletion and amortization	210.4	196.0	167.9
Total property additions, including the impact of acquisitions	189.1	372.9	159.0
Property additions through acquisitions		169.2
Operating Segments | Building Materials Business West Group
Segment Reporting Information [Line Items]
Total Revenues	3,388.6	2,812.3	2,538.1
Earnings (Loss) from operations	588.1	385.2	471.3
Assets employed	7,908.4	8,264.8	5,355.5
Depreciation, depletion and amortization	260.6	223.0	196.6
Total property additions, including the impact of acquisitions	302.2	1,131.6	197.9
Property additions through acquisitions	2.5	918.3	20.0
Operating Segments | Building Materials Business
Segment Reporting 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
Operating Segments | Magnesia Specialties
Segment Reporting Information [Line Items]
Total Revenues	304.0	298.7	242.7
Gross profit (loss)	90.9	106.5	85.5
Earnings (Loss) from operations	75.2	90.8	70.7
Assets employed	192.1	168.7	167.9
Depreciation, depletion and amortization	12.2	12.3	11.5
Total property additions, including the impact of acquisitions	32.0	8.2	13.5
Corporate
Segment Reporting Information [Line Items]
Gross profit (loss)	(5.8)	2.0	7.5
Earnings (Loss) from operations	(96.8)	(123.9)	(58.7)
Assets employed	1,829.6	950.5	714.9
Depreciation, depletion and amortization	22.8	20.4	17.5
Total property additions, including the impact of acquisitions	$ 21.1	$ 28.8	$ 16.8