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CAPITAL AND FINANCIAL RISK MANAGEMENT - Currency risk management (Details) - Currency risk $ in Millions | 12 Months Ended
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Dec. 31, 2023 USD ($)
Foreign currency forward and collar contracts |
CAPITAL AND FINANCIAL RISK MANAGEMENT |
Percentage of reasonably possible increase in risk assumption | 10.00%
Percentage of reasonably possible decrease in risk assumption | 10.00%
Canadian dollars |
CAPITAL AND FINANCIAL RISK MANAGEMENT |
Foreign currency net working capital | $ (39.3)
Strengthening in U.S dollar effect on earnings before taxes, gain (loss) | 3.6
Weakening in U.S dollar effect on earnings before taxes, gain (loss) | (4.4)
Brazilian reais |
CAPITAL AND FINANCIAL RISK MANAGEMENT |
Foreign currency net working capital | (184.9)
Strengthening in U.S dollar effect on earnings before taxes, gain (loss) | 16.8
Weakening in U.S dollar effect on earnings before taxes, gain (loss) | (20.5)
Chilean pesos |
CAPITAL AND FINANCIAL RISK MANAGEMENT |
Foreign currency net working capital | 2.0
Strengthening in U.S dollar effect on earnings before taxes, gain (loss) | (0.2)
Weakening in U.S dollar effect on earnings before taxes, gain (loss) | 0.2
Mauritanian ouguiya |
CAPITAL AND FINANCIAL RISK MANAGEMENT |
Foreign currency net working capital | (0.9)
Strengthening in U.S dollar effect on earnings before taxes, gain (loss) | 0.1
Weakening in U.S dollar effect on earnings before taxes, gain (loss) | (0.1)
Other Currency |
CAPITAL AND FINANCIAL RISK MANAGEMENT |
Foreign currency net working capital | (1.5)
Strengthening in U.S dollar effect on earnings before taxes, gain (loss) | 0.1
Weakening in U.S dollar effect on earnings before taxes, gain (loss) | $ (0.2)

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