DEBT - Schedule of Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Line of Credit Facility [Line Items]
Less: unamortized debt discount, premium and debt issuance costs	$ (10,085)	$ (15,746)
Total debt, net of unamortized debt discount, premium and debt issuance costs	1,081,913	993,575
Less: current portion of Permian Transmission Term Loan	(16,865)	(16,580)
Total long-term debt	1,065,048	976,995
Asset Backed Lending Facility \| Line of Credit
Line of Credit Facility [Line Items]
Amended and Restated ABL Facility: Summit Holdings’ asset based credit facility due July 2029	150,000	305,000
Permian Transmission Term Loan
Line of Credit Facility [Line Items]
Permian Transmission Term Loan: Summit Permian Transmission’s variable rate senior secured term loan due January 2028	116,998
Permian Transmission Term Loan \| Line of Credit
Line of Credit Facility [Line Items]
Permian Transmission Term Loan: Summit Permian Transmission’s variable rate senior secured term loan due January 2028	116,998	129,321
2029 Secured Notes \| Secured Debt
Line of Credit Facility [Line Items]
2029 Secured Notes: 8.625% senior secured second lien notes due October 2029	$ 825,000	$ 575,000

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount of unamortized debt discount (premium) and debt issuance costs.

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt classified as current. Excludes lease obligation.

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Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt classified as noncurrent. Excludes lease obligation.

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Carrying value as of the balance sheet date of uncollateralized debt obligation (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

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