UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024	Dec. 31, 2023
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ (450,295,000)	$ 17,569,000
Adjustments to reconcile net income (loss) to net cash provided by operating activities -
Depreciation and amortization	130,938,000	151,384,000
Amortization and write-off of debt issuance costs, premium and discount	7,406,000	7,370,000
Loss from disposal of discontinued operations	432,193,000	0
Equity in earnings of investments in equity investees	(24,822,000)	(28,654,000)
Cash distributions of earnings of equity investees	24,560,000	28,654,000
Non-cash effect of long-term incentive compensation plans	5,638,000	9,786,000
Deferred and other tax liabilities	(68,000)	(13,000)
Unrealized gains on derivative transactions	(238,000)	(10,941,000)
Other, net	16,539,000	6,255,000
Net changes in components of operating assets and liabilities (Note 15)	(70,059,000)	49,232,000
Net cash provided by operating activities	71,792,000	230,642,000
CASH FLOWS FROM INVESTING ACTIVITIES:
Payments to acquire fixed and intangible assets	(136,142,000)	(346,443,000)
Proceeds from disposal of discontinued operations, net of cash divested	996,642,000	0
Cash distributions received from equity investees - return of investment	11,949,000	11,687,000
Investments in equity investees	0	(285,000)
Proceeds from asset sales	692,000	10,996,000
Net cash provided by (used in) investing activities	873,141,000	(324,045,000)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings on senior secured credit facility	494,900,000	766,600,000
Repayments on senior secured credit facility	(714,300,000)	(930,100,000)
Proceeds from issuance of senior unsecured notes (Note 10)	0	700,000,000
Repayment of senior unsecured notes	(414,370,000)	(339,310,000)
Repayment of Alkali senior secured notes	0	5,815,000
Debt issuance costs	(1,482,000)	(13,252,000)
Contributions from noncontrolling interests	30,389,000	16,200,000
Distributions to noncontrolling interests	(24,237,000)	(19,197,000)
Distributions to common unitholders	(40,414,000)	(36,740,000)
Distributions to Class A Convertible Preferred unitholders	(41,836,000)	(43,788,000)
Redemption of Class A Convertible Preferred Units (Note 11)	(262,500,000)	0
Other, net	3,817,000	3,266,000
Net cash provided by (used in) financing activities	(970,033,000)	97,864,000
Net increase (decrease) in cash, cash equivalents and restricted cash	(25,100,000)	4,461,000
Cash, cash equivalents and restricted cash at beginning of period	4,452,000	32,499,000	$ 29,552,000	$ 28,038,000
Cash, cash equivalents, and restricted cash at beginning of period: discontinued operations	22,200,000	21,806,000
Cash and cash equivalents at beginning of period: continuing operations	7,352,000	6,232,000
Cash, cash equivalents and restricted cash at end of period	4,452,000	32,499,000	$ 29,552,000	$ 28,038,000
Cash, cash equivalents and restricted cash at end of period: discontinued operations	0	28,065,000
Cash and cash equivalents at end of period: continuing operations	$ 4,452,000	$ 4,434,000