CONSOLIDATED STATEMENTS OFCASH FLOWS - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss including noncontrolling interests		$ (1,338,900)	$ (239)	$ (18,575)
Adjustments to reconcile net loss to net cash provided by operating activities:
Unrealized derivative instrument loss		8,470	0	0
Depreciation and accretion		41,480	20,068	5,991
Deferred income tax (benefit) expense		64,915	(9,460)	7,041
Income from equity method interests, net		(19,069)	0	0
Distributions from equity method interests		25,316	0	0
Impairments		1,300,719	0	0
Adjustment for non-cash transactions with affiliate	[1]	0	(4,238)	9,601
Other		907	0	0
Changes in operating assets and liabilities:
Increase in inventories		(620)	(5,058)	(743)
(Increase) decrease in prepaid and other		3,877	(1,045)	0
Increase in revenue receivables (Note 4)		(4,532)	(5,602)	(5,422)
(Increase) decrease in account receivables from/payable to affiliate		(6,361)	4,484	0
Increase in interest receivable		0	(226)	0
Increase in accrued expenses		71	1,977	2,107
NET CASH PROVIDED BY OPERATING ACTIVITIES		76,273	661	0
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures		(342,650)	(84,000)	0
Proceeds from sale of assets		13,309	0	0
Contributions to equity method interests		(501,352)	0	0
Acquisition of equity method interests		(670,625)	(91,100)	0
Other		(2,370)	0	0
NET CASH USED IN INVESTING ACTIVITIES		(1,503,688)	(175,100)	0
CASH FLOWS FROM FINANCING ACTIVITIES:
Redeemable noncontrolling interest - Preferred Unit limited partners, net		611,249	0	0
Proceeds from revolving credit facility		396,000	0	0
Finance lease		(22,994)
Recapitalization transaction (Note 2)		0	628,154	0
Deferred facility fees		(792)	(3,780)	0
NET CASH PROVIDED BY FINANCING ACTIVITIES		983,463	624,374	0
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS		(443,952)	449,935	0
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR		449,935	0	0
CASH AND CASH EQUIVALENTS AT END OF PERIOD		5,983	449,935	0
SUPPLEMENTAL CASH FLOW DATA:
Accrued capital expenditures	[2]	18,573	89,810	122,364
Finance lease liability	[3]	9,767
Interest paid, net of capitalized interest		903	0	0
Cash received for income tax refunds		$ 527	$ 0	$ 0

[1] In all periods prior to the Business Combination, the Company had no banking or cash management activities. Transactions with Apache and asset transfers to and from the Company were not settled in cash and are therefore reflected as a component of equity and redeemable noncontrolling interests on the consolidated balance sheet. In addition to the above, Apache contributed its investments in gas gathering, processing, and transmission facilities of approximately $484.5 million and $505.7 million, that are included within equity and redeemable noncontrolling interests for the years ended December 31, 2018 and 2017, respectively. Refer to Note 3—Transactions with Affiliates for more information.

[2] Includes $1.5 million and $9.1 million of capital expenditures due to Apache for the years ended December 31, 2019 and 2018, respectively, pursuant to the terms of the Construction, Operations, and Maintenance Agreement entered into at the closing of the Business Combination. Refer to Note 3—Transactions with Affiliates for more information.

[3] The Company entered into a finance lease in the first quarter of 2019. Refer to Note 9—Commitments and Contingencies for more information.