Business Segments (Tables)

9 Months Ended

Sep. 30, 2020

Segment Reporting [Abstract]

Financial Data for Continuing Operation for Company's Reportable Business Segments

The following table displays selected financial data for the Company’s reportable segments. Total revenues, as presented on the consolidated statements of earnings and comprehensive earnings, exclude intersegment revenues, which represent sales from one segment to another segment and are eliminated in consolidation. Prior-year reportable segment information has been reclassified to conform to the current-year presentation.

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2020			2019			2020			2019
	(Dollars in Millions)
Total revenues:
East Group	$	549.3		$	582.0		$	1,465.9		$	1,500.8
West Group		711.2			773.4			1,904.2			1,922.7
Total Building Materials Business		1,260.5			1,355.4			3,370.1			3,423.5
Magnesia Specialties		60.9			64.8			180.2			215.2
Total	$	1,321.4		$	1,420.2		$	3,550.3		$	3,638.7
Products and services revenues:
East Group	$	514.1		$	539.8		$	1,371.8		$	1,398.6
West Group		671.4			724.1			1,785.4			1,800.1
Total Building Materials Business		1,185.5			1,263.9			3,157.2			3,198.7
Magnesia Specialties		55.2			59.3			164.0			198.9
Total	$	1,240.7		$	1,323.2		$	3,321.2		$	3,397.6
Earnings (Loss) from operations:
East Group	$	181.4		$	190.8		$	386.1		$	416.5
West Group(1)		212.3			156.8			368.2			287.7
Total Building Materials Business		393.7			347.6			754.3			704.2
Magnesia Specialties		16.4			20.1			51.2			68.0
Corporate		(9.5	)		(22.4	)		(40.7	)		(71.8	)
Total	$	400.6		$	345.3		$	764.8		$	700.4

⁽¹⁾ 2020 amounts include nonrecurring gains on sales of investment land and divested assets of $69.9 million

	September 30, 2020		December 31, 2019
Assets employed:	(Dollars in Millions)
East Group	$	4,373.9	$	4,320.6
West Group		5,390.3		5,321.9
Total Building Materials Business		9,764.2		9,642.5
Magnesia Specialties		163.5		176.2
Corporate		507.7		312.9
Total	$	10,435.4	$	10,131.6