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INCOME TAXES: - Carryforward (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Foreign tax credits |  |  |  |
Other U.S. tax credits | $ 0.0 |  |  |
Unrecognized Tax Benefits | $ 82.7 |  | $ 66.1 | $ 58.4
Income Tax Rate (as a percent) | 21.00% | 21.00% | 21.00% |
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 | $ 38.8 |  |  |
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 | $ 17.2 |  |  |
Foreign tax credit carryforward | 1,670.7 |  |  |
Foreign tax credit carryforward net of unrecognized tax benefit | 1,653.5 |  |  |
2024 | Foreign |  |  |  |
Foreign tax credits |  |  |  |
Foreign tax credit carryforward | 72.2 |  |  |
2025 | Foreign |  |  |  |
Foreign tax credits |  |  |  |
Foreign tax credit carryforward | 146.7 |  |  |
2026 | Foreign |  |  |  |
Foreign tax credits |  |  |  |
Foreign tax credit carryforward | 96.1 |  |  |
2028 | Foreign |  |  |  |
Foreign tax credits |  |  |  |
Foreign tax credit carryforward | 175.0 |  |  |
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 | 582.2 |  |  |
2032 | Foreign |  |  |  |
Foreign tax credits |  |  |  |
Foreign tax credit carryforward | $ 131.0 |  |  |

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