CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
REVENUES:
Midstream services revenue — affiliate (Note 3)		$ 135,798,000	$ 76,750,000	$ 15,142,000
Total revenues		135,798,000	76,750,000	15,142,000
COSTS AND EXPENSES:
Operations and maintenance	[1]	55,858,000	53,922,000	16,597,000
General and administrative	[2]	10,301,000	7,368,000	3,991,000
Depreciation and accretion		41,480,000	20,068,000	5,991,000
Impairments		1,300,719,000	0	0
Taxes other than income		13,231,000	7,633,000	97,000
Total costs and expenses		1,421,589,000	88,991,000	26,676,000
Operating loss		(1,285,791,000)	(12,241,000)	(11,534,000)
Unrealized derivative instrument loss		(8,470,000)	0	0
Interest income		3,606,000	1,608,000	0
Income from equity method interests, net		19,069,000	0	0
Other		(622,000)	0	0
Total other income		13,583,000	1,608,000	0
Financing costs, net of capitalized interest		1,792,000	107,000	0
NET LOSS BEFORE INCOME TAXES		(1,274,000,000)	(10,740,000)	(11,534,000)
Current income tax benefit		(15,000)	(1,041,000)	0
Deferred income tax (benefit) expense		64,915,000	(9,460,000)	7,041,000
NET LOSS INCLUDING NONCONTROLLING INTERESTS		(1,338,900,000)	(239,000)	(18,575,000)
Net income attributable to Preferred Unit limited partners		38,809,000	0	0
NET LOSS ATTRIBUTABLE TO COMMON SHAREHOLDERS		(1,377,709,000)	(239,000)	(18,575,000)
Net income (loss) attributable to Apache limited partner		(1,008,039,000)	4,149,000	0
NET LOSS ATTRIBUTABLE TO COMMON SHAREHOLDERS		$ (369,670,000)	$ (4,388,000)	$ (18,575,000)
NET LOSS ATTRIBUTABLE TO CLASS A COMMON SHAREHOLDERS, PER SHARE
Basic (in USD per share)		$ (4.93)	$ (0.03)	$ (0.30)
Diluted (in USD per share)		$ (4.93)	$ (0.03)	$ (0.30)
WEIGHTED AVERAGE SHARES
Basic (in shares)	[3]	74,929	173,125	62,259
Diluted (in shares)	[3]	74,929	173,125	62,259

[1] Includes amounts of $8.8 million, $9.1 million, and $4.7 million to related parties for the years ended December 31, 2019, 2018, and 2017, respectively. Refer to Note 3—Transactions with Affiliates.

[2] Includes amounts of $5.4 million, $6.5 million, and $4.0 million to related parties for the years ended December 31, 2019, 2018, and 2017, respectively. Refer to Note 3—Transactions with Affiliates.

[3] For periods prior to the Business Combination, the number of shares has been retroactively restated to reflect the number of shares received by Apache. For further detail of the Business Combination and associated financial statement presentation, please refer to Note 1—Summary of Significant Accounting Policies and Note 2—Recapitalization Transaction.