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INCOME TAXES: - Carryforward (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Foreign tax credits |  |  |  |
Other U.S. tax credits | $ 0.0 |  |  |
Unrecognized Tax Benefits | $ 111.0 | $ 56.0 |  | $ 66.1
Income Tax Rate (as a percent) | 21.00% | 21.00% | 21.00% |
United States |  |  |  |
Foreign tax credits |  |  |  |
Unrecognized Tax Benefits | $ 0.2 |  |  |
Mexico |  |  |  |
Foreign tax credits |  |  |  |
Unrecognized Tax Benefits | $ 0.0 |  |  |
Income Tax Rate (as a percent) | 30.00% | 30.00% | 30.00% |
Peru |  |  |  |
Foreign tax credits |  |  |  |
Unrecognized Tax Benefits | $ 46.4 |  |  |
Income Tax Rate (as a percent) | 29.50% | 29.50% | 29.50% |
Foreign |  |  |  |
Foreign tax credits |  |  |  |
Tax credits carryback period | 1 year |  |  |
Tax credits carryforward period | 10 years |  |  |
Unrecognized Tax Benefits | $ 11.7 |  |  |
Foreign tax credit carryforward | 1,915.8 |  |  |
Foreign tax credit carryforward net of unrecognized tax benefit | 1,904.1 |  |  |
2024 | Foreign |  |  |  |
Foreign tax credits |  |  |  |
Foreign tax credit carryforward | 59.7 |  |  |
2025 | Foreign |  |  |  |
Foreign tax credits |  |  |  |
Foreign tax credit carryforward | 146.7 |  |  |
2026 | Foreign |  |  |  |
Foreign tax credits |  |  |  |
Foreign tax credit carryforward | 95.1 |  |  |
2028 | Foreign |  |  |  |
Foreign tax credits |  |  |  |
Foreign tax credit carryforward | 171.8 |  |  |
2029 | Foreign |  |  |  |
Foreign tax credits |  |  |  |
Foreign tax credit carryforward | 219.9 |  |  |
2030 | Foreign |  |  |  |
Foreign tax credits |  |  |  |
Foreign tax credit carryforward | 247.6 |  |  |
2031 | Foreign |  |  |  |
Foreign tax credits |  |  |  |
Foreign tax credit carryforward | 582.3 |  |  |
2032 | Foreign |  |  |  |
Foreign tax credits |  |  |  |
Foreign tax credit carryforward | 161.2 |  |  |
2033 | Foreign |  |  |  |
Foreign tax credits |  |  |  |
Foreign tax credit carryforward | $ 231.5 |  |  |

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