Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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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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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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As of the reporting date, the aggregate carrying amount of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity.

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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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Significant Accounting Policies - Variable Interest Entities (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024
Variable Interest Entity
Cash and cash equivalents	$ 6,476			$ 5,649
Prepaid expenses and other current assets	37,963			63,651
Property, plant and equipment, net	2,102,797			2,066,847
Accrued expenses and other payables	(139,168)			(135,233)
Current maturities of long-term debt	(8,918)			(8,805)
Long-term debt, net	(2,924,455)			(2,961,703)
Redeemable noncontrolling interests	(506)			(424)
Partnership's equity in VIEs	119,495	$ 123,825	$ 142,454	145,849	$ 162,592	$ 185,335	$ 213,993	$ 448,070
Nonrelated Party
Variable Interest Entity
Accounts payable	(451,663)			(461,980)
Related Party
Variable Interest Entity
Accounts receivable-affiliates	419			730
Accounts payable	(1)			(102)
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity
Cash and cash equivalents	17			14
Prepaid expenses and other current assets	180			108
Property, plant and equipment, net	15,489			15,984
Accrued expenses and other payables	(168)			(190)
Current maturities of long-term debt	(1,918)			(1,805)
Long-term debt, net	(8,372)			(9,818)
Redeemable noncontrolling interests	(506)			(424)
Partnership's equity in VIEs	4,996			3,980
Variable Interest Entity, Primary Beneficiary \| Nonrelated Party
Variable Interest Entity
Accounts payable	(145)			(24)
Variable Interest Entity, Primary Beneficiary \| Related Party
Variable Interest Entity
Accounts receivable-affiliates	$ 419			$ 135
Parent Co
Variable Interest Entity
Parent ownership percentage in aviation entities	90.00%
Noncontrolling Interest
Variable Interest Entity
Noncontrolling interest ownership percentage in aviation entities	10.00%