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INCOME TAXES (Details 1) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Jun. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Income Tax Disclosure [Abstract] |  |  |  |  |
Effective Tax Rate, Discrete Items, net Percent | (5.30%) |  | (0.00%) | (14.40%) | 27.90%
Income tax (benefit) provision | $ (2.2) |  | $ 0.0 | $ (5.3) | $ 36.8
Statutory Federal Tax Rate | 21.00% |  | 21.00% | 21.00% | 21.00%
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit | $ 9.7 |  |  | $ 9.7 |
Government Assistance, Operating Income, Increase (Decrease) | 32.0 |  |  |  |
Effective Income Tax Rate Reconciliation, Tax Credit, Foreign, Amount | 2.5 |  |  |  |
Unrecognized Tax Benefits [Roll Forward] |  |  |  |  |
Balance at beginning of year |  |  |  | 21.1 | $ 50.3
Increases for prior year tax positions |  |  |  | 11.7 | 5.6
Decreases for prior year tax positions |  |  |  | 0.5 | 0.4
Increases for current year tax positions |  |  |  | 0.9 | 1.2
Decreases due to tax settlements |  |  |  | (1.4) | (1.0)
Foreign currency translation adjustments |  |  |  | 0.0 | 0.2
Balance at end of period | 31.8 |  | $ 55.9 | $ 31.8 | $ 55.9
Hidrogenii |  |  |  |  |
Income Tax Disclosure [Abstract] |  |  |  |  |
Investment Tax Credit |  | $ 22.0 |  |  |
Effective Income Tax Rate Reconciliation, Tax Credit, Amount | 2.6 |  |  |  |
Hidrogenii JV [Line Items] |  |  |  |  |
Investment Tax Credit |  | $ 22.0 |  |  |
Effective Income Tax Rate Reconciliation, Tax Credit, Amount | $ 2.6 |  |  |  |

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