Organization and Basis of Presentation (Details) - Merger Agreement $ in Millions	Mar. 31, 2019 USD ($)	Aug. 14, 2018
Diamondback Energy, Inc.
Business Acquisition [Line Items]
Consideration transferred, common stock portion, number of shares converted (in shares)		0.6442
Scenario, Forecast
Business Acquisition [Line Items]
Termination fee	$ 250
Maximum termination fee	40
Scenario, Forecast | Diamondback Energy, Inc.
Business Acquisition [Line Items]
Termination fee	400
Maximum termination fee	$ 25