Transactions with Affiliates - Additional Information (Detail) - USD ($)	3 Months Ended	7 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2018	Sep. 30, 2018	Dec. 31, 2017
Related Party Transaction [Line Items]
Accounts payable and accrued liabilities – Affiliates	$ 7,748,000	$ 7,748,000	$ 7,748,000	$ 183,820,000
Initial term	5 years	5 years	5 years
Lease expense		$ 400,000
Total commitment, remaining term	$ 8,300,000	$ 8,300,000	$ 8,300,000
Linn Energy Holdings and Citizen Energy LLC
Related Party Transaction [Line Items]
Accounts payable and accrued liabilities – Affiliates				63,000,000
MSAs
Related Party Transaction [Line Items]
Charges related to services	$ 0		$ 10,000,000
MSAs | Linn
Related Party Transaction [Line Items]
Accounts payable and accrued liabilities – Affiliates				55,500,000
MSAs | Citizen
Related Party Transaction [Line Items]
Accounts payable and accrued liabilities – Affiliates				46,500,000
MSAs | Linn Energy Holdings and Citizen Energy LLC
Related Party Transaction [Line Items]
Accounts payable and accrued liabilities – Affiliates				$ 19,000,000