RELATED PARTY TRANSACTIONS: (Tables)

12 Months Ended

Dec. 31, 2023

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,
	2023		2022
Related parties receivable current:
Grupo Mexico and affiliates:
Asarco LLC	$	9.4	$	9.2
AMMINCO Apoyo Administrativo, S.A. de C.V. (“AMMINCO”)		(*)		(*)
Compania Perforadora Mexico S.A.P.I. de C.V. and affiliates		—		0.3
Ferrocarril Mexicano, S.A. de C.V.		(*)		(*)
Mexico Generadora de Energia S. de R.L. ("MGE")		17.1		23.4
Mexico Compania Constructora S.A de C.V.		(*)		(*)
Grupo Mexico Servicios de Ingenieria, S.A. de C.V.		—		0.2
Related to the controlling group:
Boutique Bowling de Mexico S.A. de C.V.		—		0.1
Empresarios Industriales de Mexico, S.A. de C.V.		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
	$	27.3	$	33.3
Related parties payable:
Grupo Mexico and affiliates:
AMMINCO	$	5.0	$	5.0
Asarco LLC		13.8		23.8
Eolica El Retiro, S.A.P.I. de C.V.		0.2		0.4
Ferrocarril Mexicano S.A. de C.V.		7.9		5.6
Grupo Mexico Servicios		2.7		20.2
MGE		50.3		57.5
Mexico Compania Constructora S.A de C.V.		9.5		5.9
Grupo Mexico Servicios de Ingenieria, S.A. de C.V.		3.5		1.2
Related to the controlling group:
Boutique Bowling de Mexico S.A. de C.V.		0.3		0.3
Mexico Transportes Aereos S.A. de C.V. (“Mextransport”)		0.3		0.1
Operadora de Cinemas S.A. de C.V.		0.1		0.2
	$	93.6	$	120.2

(*)   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 2023, 2022 and 2021 (in millions):

	2023		2022		2021
Purchase activity
Boutique Bowling de Mexico S.A. de C.V.	$	0.7	$	0.4	$	0.3
Mextransport		2.8		2.1		1.8
Operadora de Cinemas S.A. de C.V.		0.4		0.2		0.4
Total purchases	$	3.9	$	2.7	$	2.5
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.		0.5		—		—
Mextransport		2.3		1.9		1.8
Operadora de Cinemas S.A. de C.V.		0.1		0.1		0.1
Total sales	$	3.0	$	2.1	$	2.0

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 2023, 2022 and 2021 (in millions):

	2023		2022		2021
Purchase activity
Asarco LLC	$	30.4	$	66.3	$	31.3
AMMINCO		10.0		10.0		8.9
Controladora de Infraestructura Energetica S.A. de C.V		—		0.8		—
Eolica El Retiro, S.A.P.I. de C.V.		2.3		3.0		9.3
Ferrocarril Mexicano, S.A. de C.V.		53.0		42.9		41.8
Grupo Mexico Servicios		20.1		20.1		20.1
Intermodal Mexico S.A. de C.V.		—		—		0.5
MGE		224.6		331.0		287.3
Mexico Compania Constructora S.A de C.V.		59.8		43.8		44.5
Grupo Mexico Servicios de Ingenieria, S.A. de C.V.		18.0		16.7		10.3
Peru Mining Exploration & Development Company		—		—		0.4
Total purchases	$	418.2	$	534.6	$	454.4
Sales activity
Asarco LLC	$	39.6	$	48.0	$	33.4
AMMINCO		(*)		(*)		0.1
AMC		—		—		0.1
MGE		66.3		165.0		126.9
Total sales	$	105.9	$	213.0	$	160.5

(*)   Less than $0.1 million