Commitments and Contingencies (Details) - USD ($) $ in Millions			1 Months Ended	3 Months Ended
	Feb. 25, 2019	Feb. 17, 2017	Oct. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Delivery Of Natural Gas And Oil Production To Third Parties
Long-term Purchase Commitment [Line Items]
Volume requirement commitment				$ 398.1
Payment for volume requirement agreement				11.0	$ 6.8
Corporate Joint Venture | San Mateo Midstream
Commitments and Contingencies (Textual) [Abstract]
Contractual obligation				$ 150.7
Contract agreement term	15 years
Rustler Breaks and Wolf Asset Area | Corporate Joint Venture | San Mateo Midstream
Commitments and Contingencies (Textual) [Abstract]
Term of contractual obligation		15 years
Rustler Breaks Asset Area | Corporate Joint Venture | San Mateo Midstream
Commitments and Contingencies (Textual) [Abstract]
Term of contractual obligation		15 years
Natural Gas Transportation and Fractionation Agreement | Eddy County
Commitments and Contingencies (Textual) [Abstract]
Agreement term				7 years
Contractual obligation				$ 129.2
2019 15-Year Fixed Fee Natural Gas Transportation Agreement | Eddy County
Commitments and Contingencies (Textual) [Abstract]
Agreement term			15 years
Contractual obligation			$ 106.9
Operational Agreements | San Mateo Midstream
Commitments and Contingencies (Textual) [Abstract]
Contractual obligation				361.1
Engineering, Procurement, Construction And Installation Of Processing Plant | San Mateo Midstream
Commitments and Contingencies (Textual) [Abstract]
Contractual obligation				80.6
Payments made under agreement				21.1
Remaining obligation				$ 19.4