SEGMENTS (Details)		3 Months Ended		6 Months Ended
		Jun. 30, 2022 USD ($) pipeline stream	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) Segment pipeline stream	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)
Segment Reporting [Abstract]
Number of operating segments | Segment				2
Segment Reporting Information [Line Items]
Net income including noncontrolling interests	[1]	$ 131,448,000	$ (15,366,000)	$ 152,837,000	$ 2,770,000
Income tax expense	[1]	162,000	0	838,000	0
Depreciation and amortization	[1]	66,581,000	57,166,000	127,604,000	113,137,000
Share-based compensation		12,200,000	0	18,304,000	0
Loss (gain) on disposal of assets	[1]	8,546,000	422,000	8,656,000	454,000
(Gain) loss on debt extinguishment		27,975,000	(60,000)	27,975,000	(60,000)
Interest and other income	[1]	0	26,000	250,000	563,000
Unrealized gain (loss) on embedded derivative	[1]	91,448,000	0	88,562,000	0
Equity income from unconsolidated affiliates	[1]	47,786,000	16,511,000	75,703,000	27,866,000
Assets		5,996,348,000		5,996,348,000		$ 3,553,206,000
Operating Segments
Segment Reporting Information [Line Items]
Assets		$ 5,981,648,000		$ 5,981,648,000		3,552,558,000
Operating Segments | Midstream Logistics
Segment Reporting Information [Line Items]
Number of streams in which a segment operates | stream		3		3
Net income including noncontrolling interests		$ 14,563,000	(24,222,000)	$ 23,749,000	(16,027,000)
Interest expense		20,641,000	27,829,000	47,412,000	55,285,000
Income tax expense		162,000		457,000
Depreciation and amortization		66,459,000	57,038,000	127,352,000	112,880,000
Contract assets amortization		448,000	448,000	896,000	896,000
Proportionate EMI EBITDA		0	0	0	0
Share-based compensation		0		0
Loss (gain) on disposal of assets		8,580,000	422,000	8,690,000	454,000
(Gain) loss on debt extinguishment		27,983,000	(60,000)	27,983,000	(60,000)
Integration costs		579,000		4,683,000
Acquisition transaction costs		0		4,000
Other one-time costs or amortization		1,239,000	485,000	2,157,000	874,000
Producer settlement			6,827,000		6,827,000
Interest and other income			24,000	0	41,000
Gain on redemption of mandatorily redeemable Preferred units		0		0
Unrealized gain (loss) on embedded derivative		0		0	(13,456,000)
Equity income from unconsolidated affiliates		0	0	0	0
Segment adjusted EBITDA		140,654,000	68,743,000	243,383,000	174,544,000
Revenue from contract with customer		335,570,000	135,764,000	592,817,000	283,865,000
Assets		3,619,400,000		3,619,400,000		2,916,774,000
Operating Segments | Midstream Logistics | Product and Service
Segment Reporting Information [Line Items]
Revenue from contract with customer		331,731,000	133,341,000	587,104,000	280,996,000
Operating Segments | Midstream Logistics | Other revenue
Segment Reporting Information [Line Items]
Revenue from contract with customer		$ 3,839,000	2,423,000	$ 5,713,000	2,869,000
Operating Segments | Pipeline Transportation
Segment Reporting Information [Line Items]
Number of pipelines with equity investment interest | pipeline		4		4
Net income including noncontrolling interests		$ 46,277,000	11,310,000	$ 75,412,000	23,739,000
Interest expense		942,000	4,778,000	(672,000)	2,632,000
Income tax expense		0		(39,000)
Depreciation and amortization		122,000	128,000	252,000	257,000
Contract assets amortization		0	0	0	0
Proportionate EMI EBITDA		71,340,000	21,717,000	112,081,000	37,973,000
Share-based compensation		0		0
Loss (gain) on disposal of assets		0	0	0	0
(Gain) loss on debt extinguishment		(8,000)	0	(8,000)	0
Integration costs		0		0
Acquisition transaction costs		0		0
Other one-time costs or amortization		0	13,000	0	21,000
Producer settlement			0		0
Interest and other income			0	0	0
Gain on redemption of mandatorily redeemable Preferred units		0		0
Unrealized gain (loss) on embedded derivative		0		0	0
Equity income from unconsolidated affiliates		47,786,000	16,511,000	75,703,000	27,866,000
Segment adjusted EBITDA		70,887,000	21,435,000	111,323,000	36,756,000
Revenue from contract with customer		2,000	2,000	4,000	4,000
Assets		2,362,248,000		2,362,248,000		635,784,000
Operating Segments | Pipeline Transportation | Product and Service
Segment Reporting Information [Line Items]
Revenue from contract with customer		0	0	0	0
Operating Segments | Pipeline Transportation | Other revenue
Segment Reporting Information [Line Items]
Revenue from contract with customer		2,000	2,000	4,000	4,000
Corporate and Other
Segment Reporting Information [Line Items]
Net income including noncontrolling interests		70,608,000	(2,454,000)	53,676,000	(4,942,000)
Interest expense		3,764,000	0	5,381,000	0
Income tax expense		0		420,000
Depreciation and amortization		0	0	0	0
Contract assets amortization		0	0	0	0
Proportionate EMI EBITDA		0	0	0	0
Share-based compensation		12,174,000		18,304,000
Loss (gain) on disposal of assets		(34,000)	0	(34,000)	0
(Gain) loss on debt extinguishment		0	0	0	0
Integration costs		4,707,000		6,755,000
Acquisition transaction costs		674,000		6,346,000
Other one-time costs or amortization		1,020,000	17,000	1,297,000	(52,000)
Producer settlement			0		0
Interest and other income			0	0	0
Gain on redemption of mandatorily redeemable Preferred units		5,087,000		9,580,000
Unrealized gain (loss) on embedded derivative		91,448,000		88,562,000	0
Equity income from unconsolidated affiliates		0	0	0	0
Segment adjusted EBITDA		(3,622,000)	(2,437,000)	(5,997,000)	(4,994,000)
Assets		14,700,000		14,700,000		$ 648,000
Consolidated
Segment Reporting Information [Line Items]
Net income including noncontrolling interests		131,448,000	(15,366,000)	152,837,000	2,770,000
Interest expense		25,347,000	32,607,000	52,121,000	57,917,000
Income tax expense		162,000		838,000
Depreciation and amortization		66,581,000	57,166,000	127,604,000	113,137,000
Contract assets amortization		448,000	448,000	896,000	896,000
Proportionate EMI EBITDA		71,340,000	21,717,000	112,081,000	37,973,000
Share-based compensation		12,174,000		18,304,000
Loss (gain) on disposal of assets		8,546,000	422,000	8,656,000	454,000
(Gain) loss on debt extinguishment		27,975,000	(60,000)	27,975,000	(60,000)
Integration costs		5,286,000		11,438,000
Acquisition transaction costs		674,000		6,350,000
Other one-time costs or amortization		2,259,000	515,000	3,454,000	843,000
Producer settlement			6,827,000		6,827,000
Interest and other income			24,000	0	41,000
Gain on redemption of mandatorily redeemable Preferred units		5,087,000		9,580,000
Unrealized gain (loss) on embedded derivative		91,448,000		88,562,000	(13,456,000)
Equity income from unconsolidated affiliates		47,786,000	16,511,000	75,703,000	27,866,000
Segment adjusted EBITDA		207,919,000	87,741,000	348,709,000	206,306,000
Revenue from contract with customer		335,572,000	135,766,000	592,821,000	283,869,000
Consolidated | Product and Service
Segment Reporting Information [Line Items]
Revenue from contract with customer		331,731,000	133,341,000	587,104,000	280,996,000
Consolidated | Other revenue
Segment Reporting Information [Line Items]
Revenue from contract with customer		$ 3,841,000	$ 2,425,000	$ 5,717,000	$ 2,873,000

[1] The results of the legacy ALTM business are not included in the Company’s consolidated financials prior to February 22, 2022. Refer to the Form 10-Q basis of presentation in Note 1—Description of the Organization and Summary of Significant Accounting Policies in the Notes to our Condensed Consolidated Financial Statements in this Form 10-Q for further information.