CONSOLIDATED STATEMENTS OFCASH FLOWS - USD ($)		7 Months Ended	12 Months Ended
		Dec. 31, 2016	Dec. 31, 2018	Dec. 31, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss including noncontrolling interest		$ 0	$ (239,000)	$ (18,575,000)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and accretion		0	20,068,000	5,991,000
Deferred income tax (benefit) expense		0	(9,460,000)	7,041,000
Adjustment for non-cash transactions with affiliate	[1]	0	(4,238,000)	9,601,000
Changes in operating assets and liabilities:
(Increase) decrease in inventories		0	(5,058,000)	(743,000)
(Increase) decrease in prepayments and other		0	(1,045,000)	0
(Increase) decrease in revenue receivables (Note 3)		0	(5,602,000)	(5,422,000)
(Increase) decrease in interest receivable		0	(226,000)	0
Increase (decrease) in accrued expenses		0	1,977,000	2,107,000
Increase (decrease) in accounts payable to affiliate		0	4,484,000	0
NET CASH PROVIDED BY OPERATING ACTIVITIES		0	661,000	0
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures		0	(84,000,000)	0
Joint venture equity interest		0	(91,100,000)	0
NET CASH USED IN INVESTING ACTIVITIES		0	(175,100,000)	0
CASH FLOWS FROM FINANCING ACTIVITIES:
Recapitalization transaction (Note 2)		0	628,154,000	0
Deferred facility fees		0	(3,780,000)	0
NET CASH PROVIDED BY FINANCING ACTIVITIES		0	624,374,000	0
NET INCREASE IN CASH AND CASH EQUIVALENTS		0	449,935,000	0
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR		0	0	0
CASH AND CASH EQUIVALENTS AT END OF PERIOD		0	449,935,000	0
Supplemental cash flow data:
Accrued capital expenditures	[2]	$ 96,626,000	$ 89,810,000	$ 122,364,000

[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, $505.7 million, and $59.3 million that are included within equity and redeemable noncontrolling interests for the year-ended December 31, 2018, 2017 and 2016 respectively. Refer to Note 3 — Transactions with Affiliates for more information.

[2] Includes $9.1 million of capital expenditures due to Apache, 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.