Segments (Tables)

12 Months Ended

Dec. 31, 2022

Segment Reporting [Abstract]

Financial Data for Continuing Operation for Company's Reportable Segments

The following tables display selected financial data for the Company’s reportable segments. Total revenues, as presented on the consolidated statements of earnings and comprehensive earnings, reflect the elimination of intersegment revenues. Total revenues and earnings (loss) from operations reflect continuing operations only.

years ended December 31 (in millions) Total revenues	2022		2021		2020
East Group	$	2,468.1	$	2,303.0	$	1,949.1
West Group		3,388.6		2,812.3		2,538.1
Total Building Materials business		5,856.7		5,115.3		4,487.2
Magnesia Specialties		304.0		298.7		242.7
Total	$	6,160.7	$	5,414.0	$	4,729.9

years ended December 31 (in millions) Earnings (Loss) from operations	2022			2021			2020
East Group	$	640.2		$	621.7		$	522.1
West Group		588.1			385.2			471.3
Total Building Materials business		1,228.3			1,006.9			993.4
Magnesia Specialties		75.2			90.8			70.7
Corporate		(96.8	)		(123.9	)		(58.7	)
Total	$	1,206.7		$	973.8		$	1,005.4

Earnings from operations for the West Group included a nonrecurring gain on divestiture of $151.9 million in 2022 and nonrecurring gains on sales of investment land and divested assets of $69.9 million in 2020.

December 31 (in millions) Assets employed	2022		2021		2020
East Group	$	5,063.5	$	5,009.0	$	4,342.5
West Group		7,908.4		8,264.8		5,355.5
Total Building Materials business		12,971.9		13,273.8		9,698.0
Magnesia Specialties		192.1		168.7		167.9
Corporate		1,829.6		950.5		714.9
Total	$	14,993.6	$	14,393.0	$	10,580.8

years ended December 31 (in millions) Depreciation, depletion and amortization	2022		2021		2020
East Group	$	210.4	$	196.0	$	167.9
West Group		260.6		223.0		196.6
Total Building Materials business		471.0		419.0		364.5
Magnesia Specialties		12.2		12.3		11.5
Corporate		22.8		20.4		17.5
Total	$	506.0	$	451.7	$	393.5

Total property additions, including the impact of acquisitions
East Group	$	189.1	$	372.9	$	159.0
West Group		302.2		1,131.6		197.9
Total Building Materials business		491.3		1,504.5		356.9
Magnesia Specialties		32.0		8.2		13.5
Corporate		21.1		28.8		16.8
Total	$	544.4	$	1,541.5	$	387.2

Property additions through acquisitions
East Group	$	—	$	169.2	$	—
West Group		2.5		918.3		20.0
Total Building Materials business		2.5		1,087.5		20.0
Magnesia Specialties		—		—		—
Corporate		—		—		—
Total	$	2.5	$	1,087.5	$	20.0