CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ 129,135	$ (138,032)	$ (400,314)
Adjustments to reconcile net income (loss) to net cash provided by operating activities -
Depreciation, depletion and amortization	296,205	309,746	295,322
Loss (gain) on sale of assets	(40,000)	0	22,045
Impairment expense	0	0	280,826
Amortization and write-off of debt issuance costs and premium or discount	9,271	13,716	22,610
Amortization of unearned income and initial direct costs on direct financing leases	0	0	(8,847)
Payments received under previously owned direct financing leases	0	70,000	56,837
Equity in earnings of investments in equity investees	(54,206)	(57,898)	(64,019)
Cash distributions of earnings of equity investees	55,571	57,080	63,721
Non-cash effect of long-term incentive compensation plans	17,810	8,783	(3,693)
Deferred and other tax liabilities	2,355	980	512
Cancellation of debt income	(8,618)	0	(27,302)
Unrealized losses (gains) on derivative transactions	(5,823)	30,700	1,191
Other, net	20,513	12,832	19,229
Net changes in components of operating assets and liabilities	(87,818)	30,044	38,627
Net cash provided by operating activities	334,395	337,951	296,745
CASH FLOWS FROM INVESTING ACTIVITIES:
Payments to acquire fixed and intangible assets	(424,195)	(301,395)	(144,133)
Cash distributions received from equity investees—return of investment	19,646	27,026	17,340
Investments in equity investees	(10,301)	(352)	0
Proceeds from asset sales	40,331	604	23,037
Net cash used in investing activities	(374,519)	(274,117)	(103,756)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings on senior secured credit facility	971,500	776,300	1,023,000
Repayments on senior secured credit facility	(815,100)	(1,371,000)	(1,338,600)
Net proceeds from issuance of Alkali senior secured notes (Note 10)	0	259,375	1,500,000
Net proceeds from issuance of preferred units (Note 11)	0	93,100	0
Repayment of senior unsecured notes (Note 10)	(72,241)	(80,859)	(1,185,096)
Debt issuance costs	(6,019)	(12,348)	(26,680)
Contributions from noncontrolling interests	22,839	703	2,354
Distributions to noncontrolling interests	(31,867)	(903)	0
Distributions to Class A Convertible Preferred unitholders (Note 11)	(74,736)	(74,736)	(74,736)
Distributions to common unitholders (Note 11)	(73,548)	(73,548)	(122,580)
Cash proceeds from the sale of a noncontrolling interest in a subsidiary	0	418,140	0
Other, net	1,500	(84)	(38)
Net cash provided by (used in) financing activities	41,699	(65,860)	(222,376)
Net increase (decrease) in cash and cash equivalents and restricted cash	1,575	(2,026)	(29,387)
Cash and cash equivalents and restricted cash at beginning of period	24,992	27,018	56,405
Cash and cash equivalents and restricted cash at end of period	26,567	24,992	27,018
Proceeds from Issuance of Senior Long-term Debt	408,000	0	0
Payments for Repurchase of Redeemable Preferred Stock	$ (288,629)	$ 0	$ 0