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v3.23.3

RELATED PARTY TRANSACTIONS: (Details) $ in Millions | 9 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2023 USD ($) | Sep. 30, 2022 USD ($) | Dec. 31, 2012 item MW | Dec. 31, 2022 USD ($) | Dec. 31, 2014 item
RELATED PARTY TRANSACTIONS: |  |  |  |  |
Related parties receivable current: | $ 24.6 |  |  | $ 33.3 |
Affiliates |  |  |  |  |
RELATED PARTY TRANSACTIONS: |  |  |  |  |
Related parties receivable current: | 24.6 |  |  | 33.3 |
Other accrued liabilities | 126.7 |  |  | 120.2 |
Total purchases | 322.5 | $ 399.2 |  |  |
Total sales | $ 2.1 | 1.6 |  |  |
Affiliates | Equity investment in affiliate |  |  |  |  |
RELATED PARTY TRANSACTIONS: |  |  |  |  |
Ownership percentage | 44.20% |  |  |  |
Affiliates | Apu Coropuna S.R.L. |  |  |  |  |
RELATED PARTY TRANSACTIONS: |  |  |  |  |
Ownership percentage | 30.00% |  |  |  |
Affiliates | Minimum |  |  |  |  |
RELATED PARTY TRANSACTIONS: |  |  |  |  |
Aggregate consideration of Material Affiliate Transaction to be be authorized by the General Counsel and CFO | $ 8.0 |  |  |  |
Affiliates | Maximum |  |  |  |  |
RELATED PARTY TRANSACTIONS: |  |  |  |  |
Aggregate consideration of Material Affiliate Transaction to be be authorized by the General Counsel and CFO | 10.0 |  |  |  |
Grupo Mexico and affiliates | Affiliates |  |  |  |  |
RELATED PARTY TRANSACTIONS: |  |  |  |  |
Total sales | 80.8 | 165.8 |  |  |
Asarco LLC ("Asarco") | Affiliates |  |  |  |  |
RELATED PARTY TRANSACTIONS: |  |  |  |  |
Related parties receivable current: | 8.6 |  |  | 9.2 |
Other accrued liabilities | 24.5 |  |  | 23.8 |
Total purchases | 31.4 | 51.9 |  |  |
Total sales | 29.9 | 32.2 |  |  |
AMMINCO Apoyo Administrativo, S.A. de C.V. ("AMMINCO") | Affiliates |  |  |  |  |
RELATED PARTY TRANSACTIONS: |  |  |  |  |
Other accrued liabilities | 9.3 |  |  | 5.0 |
Total purchases | 7.5 | 6.7 |  |  |
Controladora de Infraestructura Energetica Mexico, S. A. de C. V. | Affiliates |  |  |  |  |
RELATED PARTY TRANSACTIONS: |  |  |  |  |
Total purchases |  | 0.8 |  |  |
Compania Perforadora Mexico S.A.P.I. de C.V. and affiliates | Affiliates |  |  |  |  |
RELATED PARTY TRANSACTIONS: |  |  |  |  |
Related parties receivable current: |  |  |  | 0.3 |
Eolica El Retiro, S.A.P.I. de C.V. |  |  |  |  |
RELATED PARTY TRANSACTIONS: |  |  |  |  |
Number of wind turbines | item |  |  |  |  | 37
Eolica El Retiro, S.A.P.I. de C.V. | Affiliates |  |  |  |  |
RELATED PARTY TRANSACTIONS: |  |  |  |  |
Other accrued liabilities | 0.4 |  |  | 0.4 |
Total purchases | $ 2.1 | $ 2.5 |  |  |
Percentage of supply to third-party energy users | 14.90% | 32.50% |  |  |
Ferrocarril Mexicano, S.A. de C.V. | Affiliates |  |  |  |  |
RELATED PARTY TRANSACTIONS: |  |  |  |  |
Other accrued liabilities | $ 9.9 |  |  | 5.6 |
Total purchases | 40.1 | $ 32.5 |  |  |
Grupo Mexico | Affiliates |  |  |  |  |
RELATED PARTY TRANSACTIONS: |  |  |  |  |
Total purchases | 3.0 | 1.9 |  |  |
Grupo Mexico Servicios | Affiliates |  |  |  |  |
RELATED PARTY TRANSACTIONS: |  |  |  |  |
Other accrued liabilities | 19.1 |  |  | 20.2 |
Total purchases | 15.1 | 15.1 |  |  |
Donations | 3.4 | 2.6 |  |  |
MGE | Mexico |  |  |  |  |
RELATED PARTY TRANSACTIONS: |  |  |  |  |
Number of natural gas-fired combined cycle power generating units | item |  |  | 2 |  |
MGE | Affiliates |  |  |  |  |
RELATED PARTY TRANSACTIONS: |  |  |  |  |
Related parties receivable current: | 15.3 |  |  | 23.4 |
Other accrued liabilities | 42.9 |  |  | 57.5 |
Total purchases | 176.9 | 250.8 |  |  |
Total sales | $ 50.9 | $ 133.6 |  |  |
MGE | Affiliates | Mexico |  |  |  |  |
RELATED PARTY TRANSACTIONS: |  |  |  |  |
Net total capacity (in megawatts) | MW |  |  | 516.2 |  |
Percentage of supply to third-party energy users | 8.20% | 1.80% |  |  |
Mexico Compania Constructora S.A de C.V. | Affiliates |  |  |  |  |
RELATED PARTY TRANSACTIONS: |  |  |  |  |
Other accrued liabilities | $ 18.5 |  |  | 5.9 |
Mexico Proyectos y Desarrollos SA de CV and affiliates | Affiliates |  |  |  |  |
RELATED PARTY TRANSACTIONS: |  |  |  |  |
Total purchases | 49.4 | $ 38.9 |  |  |
Grupo Mexico Servicios de Ingenieria, S.A. de C.V. | Affiliates |  |  |  |  |
RELATED PARTY TRANSACTIONS: |  |  |  |  |
Related parties receivable current: | 0.1 |  |  | 0.2 |
Other accrued liabilities | 1.2 |  |  | 1.2 |
Boutique Bowling de Mexico, S.A. de C.V. | Affiliates |  |  |  |  |
RELATED PARTY TRANSACTIONS: |  |  |  |  |
Related parties receivable current: |  |  |  | 0.1 |
Other accrued liabilities | 0.4 |  |  | 0.3 |
Total purchases | 0.5 | 0.2 |  |  |
Total sales | 0.1 | 0.1 |  |  |
Empresarios Industriales de Mexico, S.A. de C.V | Affiliates |  |  |  |  |
RELATED PARTY TRANSACTIONS: |  |  |  |  |
Related parties receivable current: | 0.3 |  |  |  |
Total sales | 0.2 |  |  |  |
Mexico Transportes Aereos S.A. de C.V. ("Mextransport") | Affiliates |  |  |  |  |
RELATED PARTY TRANSACTIONS: |  |  |  |  |
Related parties receivable current: | 0.2 |  |  |  |
Other accrued liabilities | 0.3 |  |  | 0.1 |
Total purchases | 2.2 | 1.6 |  |  |
Total sales | 1.7 | 1.4 |  |  |
Operadora de Cinemas S.A. de C.V. | Affiliates |  |  |  |  |
RELATED PARTY TRANSACTIONS: |  |  |  |  |
Related parties receivable current: | 0.1 |  |  | 0.1 |
Other accrued liabilities | 0.2 |  |  | 0.2 |
Total purchases | 0.3 | 0.1 |  |  |
Total sales | $ 0.1 | 0.1 |  |  |
Amminco Apoyo, Ferrocarril Mexicano and Operadora De Cinemas | Affiliates | Maximum |  |  |  |  |
RELATED PARTY TRANSACTIONS: |  |  |  |  |
Related party receivable and payable |  |  |  | $ 0.1 |
Amminco Apoyo and Ferrocarril Mexicano | Affiliates | Maximum |  |  |  |  |
RELATED PARTY TRANSACTIONS: |  |  |  |  |
Threshold revenue from related parties |  | 0.1 |  |  |
Boutique Bowling and Operadora De Cinemas | Affiliates | Maximum |  |  |  |  |
RELATED PARTY TRANSACTIONS: |  |  |  |  |
Total sales |  | $ 0.1 |  |  |

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