Revenues and Gross Profit (Tables)

3 Months Ended

Mar. 31, 2024

Revenues And Gross Profit [Abstract]

Summary of Information About the Company's Contract Balances

The following table presents information about the Company’s contract balances:

	March 31, 2024		December 31, 2023
	(Dollars in Millions)
Costs in excess of billings	$	4	$	5
Billings in excess of costs	$	9	$	10

Total Revenues and Gross Profit (Loss) by Product Line

The following tables, which are reconciled to consolidated amounts, provide total revenues and gross profit (loss) by line of business: Building Materials (further divided by product line) and Magnesia Specialties. Interproduct revenues represent sales from the aggregates product line to the ready mixed concrete and asphalt and paving product lines. Effective January 1, 2024, the Company combined the cement and ready mixed concrete product lines. This change was driven by the reduced significance of each of these product lines relative to the Building Materials business and consolidated operating results from recent divestitures. Additionally, there is a significant relationship between these product lines, as the ready mixed concrete product line is a significant customer of the cement product line. Total revenues and gross profit (loss) reflect continuing operations only.

	Three Months Ended
	March 31,
	2024			2023
	(Dollars in Millions)
Total revenues:
Building Materials business:
Aggregates	$	885		$	912
Cement and ready mixed concrete		265			340
Asphalt and paving services		59			58
Less: interproduct revenues		(39	)		(39	)
Total Building Materials business		1,170			1,271
Magnesia Specialties		81			83
Total	$	1,251		$	1,354
Gross profit (loss):
Building Materials business:
Aggregates	$	239		$	238
Cement and ready mixed concrete		31			58
Asphalt and paving services		(22	)		(20	)
Total Building Materials business		248			276
Magnesia Specialties		29			25
Corporate		(5	)		2
Total		272			303