RELATED PARTY TRANSACTIONS: (Tables)

12 Months Ended

Dec. 31, 2018

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


	At December 31,
	2018		2017
Related parties receivable current:
Grupo Mexico and affiliates:
Asarco LLC	$	74.4		4.1
Americas Mining Corporation (“AMC”)		11.0		—
AMMINCO Apoyo Administrativo, S.A. de C.V. (“AMMINCO”)		0.2		—
Compania Perforadora Mexico S.A.P.I. de C.V. and affiliates		1.4		1.4
Ferrocarril Mexicano, S.A. de C.V.		0.1		—
Grupo Mexico		2.7		2.8
Mexico Generadora de Energia S. de R.L. ("MGE")		10.3	$	16.2
Mexico Proyectos y Desarrollos, S.A. de C.V. and affiliates		0.6		1.1
Related to the controlling group:
Boutique Bowling de Mexico S.A. de C.V.		0.3		0.2
Mexico Transportes Aereos, S.A. de C.V. ("Mextransport")		0.1		—
Operadora de Cinemas S.A. de C.V.		0.4		0.3
	$	101.5	$	26.1
Related parties payable:
Grupo Mexico and affiliates:
Asarco LLC	$	4.1	$	24.2
AMMINCO		8.0		—
Eolica El Retiro, S.A.P.I. de C.V.		1.0		0.8
Ferrocarril Mexicano S.A. de C.V.		6.4		2.6
Grupo Mexico		0.6		0.7
MGE		40.6		38.5
Mexico Proyectos y Desarrollos S.A. de C.V. and affiliates		14.4		21.7
Related to the controlling group:
Boutique Bowling de Mexico S.A. de C.V.		0.1		0.6
Mexico Transportes Aereos S.A. de C.V. (“Mextransport”)		—		0.3
Operadora de Cinemas S.A. de C.V.		0.1		0.7
	$	75.3	$	90.1

The following table summarizes the purchase and sale activities with Grupo Mexico and its affiliates in 2018, 2017 and 2016 (in millions):


	2018		2017		2016
Purchase activity
Asarco LLC	$	37.2	$	37.2	$	30.3
AMMINCO		8.0		—		—
Compania Perforadora Mexico S.A.P.I. de C.V. and affiliates		—		—		0.3
Eolica El Retiro, S.A.P.I. de C.V.		3.6		3.3		2.0
Ferrocarril Mexicano, S.A. de C.V.		41.7		43.5		42.7
Grupo Mexico		10.1		14.0		13.8
MGE		200.1		223.7		233.8
Mexico Proyectos y Desarrollos S.A. de C.V. and affiliates		79.8		152.9		76.0
Total purchases	$	380.5	$	474.6	$	398.9
Sales activity
Asarco LLC	$	81.8	$	96.2	$	37.1
AMMINCO		0.3		—		—
Compania Perforadora Mexico S.A.P.I. de C.V. and affiliates		—		0.2		0.6
Grupo Mexico		—		0.2		0.6
Mexico Proyectos y Desarrollos S.A. de C.V. and affiliates		—		—		0.4
Operadora de Generadoras de Energia Mexico S.A. de C.V		—		—		0.1
MGE		68.2		101.0		95.9
Total sales	$	150.3	$	197.6	$	134.7

The following table summarizes the purchase and sales activities with other Larrea family companies in 2018, 2017 and 2016 (in millions):


	2018		2017		2016
Purchase activity
Boutique Bowling de Mexico S.A. de C.V.	$	0.3	$	0.3	$	0.4
Mextransport		12.4		1.3		2.0
Operadora de Cinemas S.A. de C.V.		0.2		0.1		0.5
Total purchases	$	12.9	$	1.7	$	2.9
Sales activity
Boutique Bowling de Mexico S.A. de C.V.	$	0.2	$	0.2	$	0.2
Mextransport		1.2		0.3		0.2
Operadora de Cinemas S.A. de C.V.		0.1		0.2		0.1
Total sales	$	1.5	$	0.7	$	0.5