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PREFERRED STOCK AND COMMON SHAREHOLDERS' EQUITY PREFERRED STOCK AND COMMON SHAREHOLDERS' EQUITY - Accumulated Other Comprehensive Earnings (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Accumulated Other Comprehensive Earnings [Roll Forward] |  |  |  |
Foreign Currency Translation Adjustments, Beginning balance |  |  | $ (264.7) |
Other comprehensive income before reclassifications |  |  | 218.5 |
Tax effect of adjustments |  |  | 0.0 |
Foreign Currency Translation Adjustments, Ending balance | $ (46.2) |  | (46.2) |
Net Benefit Plan Adjustments, Beginning balance |  |  | 3.1 |
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment and Tax |  |  | 1.5 |
Tax effect of adjustments |  |  | (0.4) |
Net Benefit Plan Adjustments, Ending balance | 4.2 |  | 4.2 |
Accumulated Other Comprehensive Earnings, Beginning balance |  |  | (261.6) |
Other Comprehensive Income (Loss), before Reclassifications, before Tax |  |  | 220.0 |
Provision for income tax related to items of comprehensive earnings | (0.2) | $ (1.1) | (0.4) | $ (0.6)
Accumulated Other Comprehensive Earnings, Ending balance | $ (42.0) |  | $ (42.0) |

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