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FAIR VALUE - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	6 Months Ended
	Jan. 31, 2022	Jun. 30, 2025	Jun. 30, 2024
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Asset retirement obligations incurred and acquired		$ 2.2	$ 4.1
Fair value, net of derivative asset (liability) measured on recurring basis, unobservable inputs reconciliation, transfers, net		0.0
Veritas
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Business acquisition, equity interest issued or issuable, number of shares (in shares)	1,939,998
Business acquisition, share price (in dollars per share)	$ 28.30
Senior Notes due 2028 \| Estimated Fair Value \| Unsecured Debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of long-term debt		710.4
Convertible Notes due 2029 \| Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of long-term debt		736.8
Senior Notes due 2031 \| Estimated Fair Value \| Unsecured Debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of long-term debt		$ 513.8