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SEGMENT AND RELATED INFORMATION: - Receivables (Details) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | --- | ---
Financial information related to segments |  |  |
Trade receivables | $ 832.9 | $ 822.4 | $ 890.6
Related parties receivable current: | 30.0 | 101.5 | 26.1
Related parties receivable non-current: | 59.5 |  |
Corporate, other and eliminations |  |  |
Financial information related to segments |  |  |
Related parties receivable current: | 7.9 | 19.9 | 8.1
Mexican Open-pit |  |  |
Financial information related to segments |  |  |
Trade receivables | 477.8 | 505.9 | 556.2
Related parties receivable current: | 22.1 | 81.6 | 18.0
Related parties receivable non-current: | 59.5 |  |
Mexican IMMSA Unit |  |  |
Financial information related to segments |  |  |
Trade receivables | 38.0 | 50.5 | 79.7
Peruvian Operations |  |  |
Financial information related to segments |  |  |
Trade receivables | $ 317.1 | $ 266.0 | $ 254.7

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