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Change in Working Capital (Tables) | 12 Months Ended
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Dec. 31, 2017
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Summary of Change in Working Capital |
|  | UNITED STATES DOLLAR |
|  | 2017 |  |  | 2016 Restated1 |  |  | 2015 Restated1 |
Inventories |  |  | (55.1 | ) |  |  | (39.2 | ) |  |  | 47.5 |
Trade and other receivables |  |  | (2.2 | ) |  |  | 2.8 |  |  |  | 36.5 |
Trade and other payables |  |  | (12.1 | ) |  |  | 34.1 |  |  |  | (40.7 | )
Total change in working capital |  |  | (69.4 | ) |  |  | (2.3 | ) |  |  | 43.3 |

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