Derivative Financial Instruments - Summary of Outstanding Oil and Gas Derivative Contracts and Weighted Average Oil and Gas Prices (Details) - Forecast	9 Months Ended	12 Months Ended	21 Months Ended
	Dec. 31, 2020 MMBTU $ / MBbls $ / bbl $ / MMBTU MBbls	Dec. 31, 2021 $ / bbl $ / MBbls MBbls	Dec. 31, 2021 $ / MBbls $ / bbl MBbls
Natural Gas | Swap
Derivative [Line Items]
Strike price ($/Bbl) | $ / MMBTU	0.82
Notional (MMbtu) | MMBTU	13,250,000
Oil swaps - Midland | Crude Options | Basis Swap Contracts
Derivative [Line Items]
Strike price ($/Bbl)	1.27
Notional (MBbl) | MBbls	4,300
Oil swaps - Midland | Crude Options | Swap
Derivative [Line Items]
Derivative, swap type, fixed price | $ / bbl	30.47	40.50	40.50
Oil swaps - Houston | Crude Options | Swap
Derivative [Line Items]
Derivative, swap type, fixed price | $ / bbl	32.87	40.74	40.74
Oil swaps - WTI | Crude Options | Swap
Derivative [Line Items]
Derivative, swap type, fixed price | $ / bbl	57.87	0	0
Oil swaps - Brent | Crude Options | Swap
Derivative [Line Items]
Derivative, swap type, fixed price | $ / bbl	44.11	44.46	44.46
Midland | Crude Options | Put Option
Derivative [Line Items]
Notional (MBbl) | MBbls	300
MEH | Crude Options | Put Option
Derivative [Line Items]
Notional (MBbl) | MBbls	5,250
Three Way Collars, WTI Midland | Crude Options | Put Option
Derivative [Line Items]
Notional (MBbl) | MBbls	1,692	0
Three Way Collars, WTI Magellan East Houston | Crude Options | Put Option
Derivative [Line Items]
Notional (MBbl) | MBbls	4,828	2,850
Two-way collars | Crude Options | Put Option
Derivative [Line Items]
Notional (MBbl) | MBbls	1,800
Two Way Collars, Brent | Crude Options | Put Option
Derivative [Line Items]
Notional (MBbl) | MBbls	1,500
Midland Master Netting Agreements | Crude Options | Basis Swap Contracts
Derivative [Line Items]
Strike price ($/Bbl)		(1,075,700,000)	(1,075,700,000)
Notional (MBbl) | MBbls			84,811
Midland | Crude Options | Swap
Derivative [Line Items]
Notional (MBbl) | MBbls	4,248	1,825
Houston | Crude Options | Swap
Derivative [Line Items]
Notional (MBbl) | MBbls	8,427	18,980
WTI | Crude Options | Swap
Derivative [Line Items]
Notional (MBbl) | MBbls	3,025	0
Brent | Crude Options | Swap
Derivative [Line Items]
Notional (MBbl) | MBbls	2,325	8,030
Long | Midland | Crude Options | Put Option
Derivative [Line Items]
Weighted average strike price (in dollars per unit)	50.00
Long | MEH | Crude Options | Put Option
Derivative [Line Items]
Weighted average strike price (in dollars per unit)	37.43
Long | Three Way Collars, WTI Midland | Crude Options | Put Option
Derivative [Line Items]
Weighted average strike price (in dollars per unit)	26.74	0
Long | Three Way Collars, WTI Magellan East Houston | Crude Options | Put Option
Derivative [Line Items]
Weighted average strike price (in dollars per unit)	28.73	41.05
Long | Two-way collars | Crude Options | Put Option
Derivative [Line Items]
Weighted average strike price (in dollars per unit)	43.00
Long | Two Way Collars, Brent | Crude Options | Put Option
Derivative [Line Items]
Weighted average strike price (in dollars per unit)	47.26
Short | Midland | Crude Options | Put Option
Derivative [Line Items]
Weighted average strike price (in dollars per unit)	40.00
Short | MEH | Crude Options | Put Option
Derivative [Line Items]
Weighted average strike price (in dollars per unit)	27.43
Short | Three Way Collars, WTI Midland | Crude Options | Put Option
Derivative [Line Items]
Weighted average strike price (in dollars per unit)	52.48	0
Short | Three Way Collars, WTI Midland | Crude Options | Call Option
Derivative [Line Items]
Weighted average strike price (in dollars per unit)	36.74	0
Short | Three Way Collars, WTI Magellan East Houston | Crude Options | Put Option
Derivative [Line Items]
Weighted average strike price (in dollars per unit)	53.26	62.89
Short | Three Way Collars, WTI Magellan East Houston | Crude Options | Call Option
Derivative [Line Items]
Weighted average strike price (in dollars per unit)	38.73	51.05
Short | Two-way collars | Crude Options | Call Option
Derivative [Line Items]
Weighted average strike price (in dollars per unit)	48.00
Short | Two Way Collars, Brent | Crude Options | Call Option
Derivative [Line Items]
Weighted average strike price (in dollars per unit)	52.26