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Related party transactions (Tables) | 9 Months Ended
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Sep. 30, 2018
Related Party Transactions [Abstract] |
Schedule of related party transactions | A summary of the aforementioned significant related party transactions is as follows:
| Three months ended September 30, |  | Nine months ended September 30,
| 2018 |  | 2017 |  | 2018 |  | 2017
Net sales to Glencore | $ | 305.3 |  |  | $ | 299.2 |  |  | $ | 884.2 |  |  | $ | 876.1 |
Purchases from Glencore | 57.2 |  |  | 81.9 |  |  | 205.6 |  |  | 195.1 |
Purchases from BHH | 5.9 |  |  | 3.2 |  |  | 21.4 |  |  | 9.1 |

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- References No definition available. + Details
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- Definition Tabular disclosure of related party transactions. Examples of related party transactions include, but are not limited to, transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners and (d) affiliates. + References No definition available. + Details
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