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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Detail) - USD ($) |  | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 15, 2026 | Jun. 30, 2026 | Dec. 31, 2025
Minimum |  |  |
Operations And Summary Of Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment, useful life |  | 3 years |
Maximum |  |  |
Operations And Summary Of Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment, useful life |  | 50 years |
PGS |  |  |
Operations And Summary Of Significant Accounting Policies [Line Items] |  |  |
Cash |  | $ 31,700,000 | $ 8,400,000
Property, plant and equipment, additions |  | $ 446,800,000 | $ 358,900,000
Redemption of ownership interest | $ 445,000,000 |  |
PGS | Class A-2 Units |  |  |
Operations And Summary Of Significant Accounting Policies [Line Items] |  |  |
Transaction costs attributable to issuance of stock | 18,500,000 |  |
PGS | Starville Evergreen Holdings, LLC |  |  |
Operations And Summary Of Significant Accounting Policies [Line Items] |  |  |
Gain (loss) on issuance and redemption of stock in subsidiary | $ 0 |  |
PGS | Unit Purchase Agreement | Starville Evergreen Holdings, LLC | Class A-2 Units |  |  |
Operations And Summary Of Significant Accounting Policies [Line Items] |  |  |
Sale of stock, units sold | 600,000 |  |
Sale of stock, percentage of ownership after transaction | 27.00% |  |
Sale of stock, consideration received on transaction | $ 600,000,000 |  |
PGS | LLC Agreement | Starville Evergreen Holdings, LLC |  |  |
Operations And Summary Of Significant Accounting Policies [Line Items] |  |  |
Percentage of quarterly distributable cash after achievement of return hurdles | 19.50% |  |

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