RELATED PARTY TRANSACTIONS: (Tables)

12 Months Ended

Dec. 31, 2024

RELATED PARTY TRANSACTIONS:

Schedule of receivable and payable balances with related parties

Receivable and payable balances with related parties are shown below (in millions):

	At December 31,
	2024		2023
Related parties receivable current:
Grupo Mexico and affiliates:
Asarco LLC	$	7.1	$	9.4
AMMINCO Apoyo Administrativo, S.A. de C.V. (“AMMINCO”)		(*)		(*)
Ferrocarril Mexicano, S.A. de C.V.		(*)		(*)
Mexico Generadora de Energia S. de R.L. ("MGE")		5.4		17.1
Mexico Compania Constructora S.A de C.V.		(*)		(*)
Related to the controlling group:
Empresarios Industriales de Mexico, S.A. de C.V.		0.9		0.6
Mexico Transportes Aereos, S.A. de C.V. ("Mextransport")		—		0.1
Operadora de Cinemas S.A. de C.V.		0.1		0.1
	$	13.5	$	27.3
Related parties payable:
Grupo Mexico and affiliates:
AMMINCO	$	6.0	$	5.0
Asarco LLC		6.0		13.8
Eolica El Retiro, S.A.P.I. de C.V.		0.4		0.2
Ferrocarril Mexicano S.A. de C.V.		2.9		7.9
Grupo Mexico Servicios		4.3		2.7
MGE		15.9		50.3
Mexico Compania Constructora S.A de C.V.		8.0		9.5
Parque Eolico de Fenicias, S. de R.L. de C.V.		2.6		—
Grupo Mexico Servicios de Ingenieria, S.A. de C.V.		2.1		3.5
Related to the controlling group:
Boutique Bowling de Mexico S.A. de C.V.		0.5		0.3
Mexico Transportes Aereos S.A. de C.V. (“Mextransport”)		0.1		0.3
Operadora de Cinemas S.A. de C.V.		0.4		0.1
	$	49.2	$	93.6

(*)   Less than $0.1 million.

Grupo Mexico and affiliates

RELATED PARTY TRANSACTIONS:

Schedule of purchase and sales activities with related parties

The following table summarizes the purchase and sale activities with Grupo Mexico and its affiliates in 2024, 2023 and 2022 (in millions):

	2024		2023		2022
Purchase activity
Asarco LLC	$	4.7	$	30.4	$	66.3
AMMINCO		10.0		10.0		10.0
Controladora de Infraestructura Energetica S.A. de C.V		—		—		0.8
Eolica El Retiro, S.A.P.I. de C.V.		4.9		2.3		3.0
Ferrocarril Mexicano, S.A. de C.V.		48.4		53.0		42.9
Grupo Mexico Servicios		20.1		20.1		20.1
MGE		172.6		224.6		331.0
Mexico Compania Constructora S.A de C.V.		75.3		59.8		43.8
Parque Eolico de Fenicias, S. de R.L. de C.V.		12.4		—		—
Grupo Mexico Servicios de Ingenieria, S.A. de C.V.		18.8		18.0		16.7
Total purchases	$	367.2	$	418.2	$	534.6
Sales activity
Asarco LLC	$	38.0	$	39.6	$	48.0
AMMINCO		0.1		(*)		(*)
Ferrocarril Mexicano, S.A. de C.V.		(*)		—		—
MGE		35.8		66.3		165.0
Total sales	$	73.9	$	105.9	$	213.0

(*)   Less than $0.1 million

Companies with relationship to the controlling group

RELATED PARTY TRANSACTIONS:

Schedule of purchase and sales activities with related parties

The following table summarizes the purchase and sales activities with other Larrea family companies in 2024, 2023 and 2022 (in millions):

	2024		2023		2022
Purchase activity
Boutique Bowling de Mexico S.A. de C.V.	$	0.6	$	0.7	$	0.4
Mextransport		2.5		2.8		2.1
Operadora de Cinemas S.A. de C.V.		0.3		0.4		0.2
Total purchases	$	3.4	$	3.9	$	2.7
Sales activity
Boutique Bowling de Mexico S.A. de C.V.	$	0.1	$	0.1	$	0.1
Empresarios Industriales de Mexico, S.A. de C.V.		0.4		0.5		—
Mextransport		2.3		2.3		1.9
Operadora de Cinemas S.A. de C.V.		0.1		0.1		0.1
Total sales	$	2.9	$	3.0	$	2.1