The following tables, which are reconciled to consolidated amounts, provide 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 cement and ready mixed concrete and asphalt and paving product lines and sales from the cement product line to the ready mixed concrete product line. 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. Revenues and gross profit (loss) reflect continuing operations only.


years ended December 31 (in millions) Revenues	2024			2023			2022
Building Materials business:
Aggregates	$	4,514		$	4,302		$	3,879
Cement and ready mixed concrete		1,083			1,518			1,395
Asphalt and paving		869			887			788
Less: interproduct revenues		(250	)		(245	)		(205	)
Total Building Materials business		6,216			6,462			5,857
Magnesia Specialties		320			315			304
Total	$	6,536		$	6,777		$	6,161

years ended December 31 (in millions) Gross profit (loss)	2024			2023			2022
Building Materials business:
Aggregates	$	1,449		$	1,378		$	984
Cement and ready mixed concrete		260			436			273
Asphalt and paving		101			109			81
Total Building Materials business		1,810			1,923			1,338
Magnesia Specialties:		107			97			91
Corporate		(39	)		3			(6	)
Total	$	1,878		$	2,023		$	1,423

The above information for 2023 and 2022 has been reclassified to conform to current-year presentation. For the year ended December 31, 2023, the cement product line reported revenues of $726 million, inclusive of $217 million to the ready mixed concrete product line, and gross profit of $334 million. For the year ended December 31, 2023, the ready mixed concrete product line reported revenues of $1.0 billion and gross profit of $102 million. For the year ended December 31, 2022, the cement product line reported revenues of $620 million, inclusive of $178 million to the ready mixed concrete product line, and gross profit of $203 million. For the year ended December 31, 2022, the ready mixed concrete product line reported revenues of $953 million and gross profit of $70 million. Revenues from sales of cement to the ready mixed concrete product line were previously eliminated in the interproduct revenues line.

Domestic and foreign revenues are as follows:


years ended December 31 (in millions)	2024		2023		2022
Domestic	$	6,487	$	6,707	$	6,078
Foreign		49		70		83
Total	$	6,536	$	6,777	$	6,161

Performance Obligations. Performance obligations are contractual promises to transfer or provide a distinct good or service for a stated price. The Company’s product sales agreements are single-performance obligations that are satisfied at a point in time. Performance obligations within paving service agreements are satisfied over time, primarily ranging from one day to two years. Customer payment terms are generally 30 days from invoice date. Customer payments for the paving operations are based on a contractual billing schedule and are typically "paid-when-paid", meaning the Company is paid once the customer is paid.

Future revenues from unsatisfied performance obligations at December 31, 2024, 2023 and 2022 were $255 million, $251 million and $239 million, respectively, where the remaining periods to complete these obligations ranged from one month to 36 months at December 31, 2024, one month to 22 months at December 31, 2023 and two months to 34 months at December 31, 2022.