COMMITMENTS AND CONTINGENCIES (Details) $ in Millions |
1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|---|---|
|
Feb. 29, 2020
company
|
Jun. 30, 2026
USD ($)
|
Jun. 30, 2025
USD ($)
|
Mar. 31, 2025
USD ($)
|
Jun. 30, 2026
USD ($)
|
Jun. 30, 2025
USD ($)
|
Dec. 31, 2025
USD ($)
|
|
| Schedule of Equity Method Investments [Line Items] | |||||||
| Payment of post-acquisition date earnout liability | $ 4.7 | $ 1.8 | $ 8.6 | $ 6.7 | |||
| Accrued probable future environmental expenditures | $ 132.3 | $ 132.3 | $ 141.2 | ||||
| Environmental loss contingency, statement of financial position | Accrued expenses and other current liabilities, Other non-current liabilities | Accrued expenses and other current liabilities, Other non-current liabilities | Accrued expenses and other current liabilities, Other non-current liabilities | ||||
| Proceeds from insurance recoveries | $ 34.0 | ||||||
| Calvert City | |||||||
| Schedule of Equity Method Investments [Line Items] | |||||||
| Accrual for environmental loss contingencies, number of companies negotiating consent decree | company | 3 | ||||||
| Payment of post-acquisition date earnout liability | $ 21.3 | ||||||
| Environment remediation expense, extension period (in years) | 2 years | ||||||
| Accrued probable future environmental expenditures | $ 123.1 | $ 123.1 | $ 133.2 | ||||