Risk Management and Hedging Activities - Schedule of Net Long or Short Positions Expected to be Realized (Detail)	9 Months Ended
	Sep. 30, 2022 MMBTU bbl	Sep. 30, 2021 MMBTU bbl
Crude Oil
Net (Short) Position, Volume [Abstract]
Net (Short) Position (Bbls), Year One | bbl	(442,000)	(405,000)
Net (Short) Position (Bbls), Year Two | bbl	(1,526,000)	(1,286,000)
Net (Short) Position (Bbls), Year Three | bbl	(720,000)	(446,000)
Net (Short) Position (Bbls), Year Four | bbl	0	0
Net Long (Short) Position (Bbls), Year Five | bbl	0	0
Net (Short) Positions (Bbls), Year Six | bbl	0	0
Natural Gas [Member]
Net Long (Short) Position, MMBtu [Abstract]
Net (Short) Long Position (MMBtu), Year One | MMBTU	(17,357,400)	(31,457,300)
Net (Short) Long Position (MMBtu), Year Two | MMBTU	(28,753,300)	(59,980,200)
Net Long Position (MMBtu), Year Three | MMBTU	(8,235,000)	912,500
Net Long Position (MMBtu), Year Four | MMBTU	(7,300,000)	0
Net Long Position (MMBtu), Year Five | MMBTU	0	0
Net Long (Short) Positions (MMBtu), year Six | MMBTU	0
Natural Gas Liquids
Net (Short) Position, Volume [Abstract]
Net (Short) Position (Bbls), Year One | bbl	2,057,818	168,546
Net (Short) Position (Bbls), Year Two | bbl	(7,268,200)	(8,817,555)
Net (Short) Position (Bbls), Year Three | bbl	102,000	(1,296,000)
Net (Short) Position (Bbls), Year Four | bbl	(1,000)	(1,446,000)
Net Long (Short) Position (Bbls), Year Five | bbl	0	(1,440,000)
Net (Short) Positions (Bbls), Year Six | bbl	0	(1,080,000)
Natural Gas Basis Swaps
Net Long (Short) Position, MMBtu [Abstract]
Net (Short) Long Position (MMBtu), Year One | MMBTU	247,500	(2,245,000)
Net (Short) Long Position (MMBtu), Year Two | MMBTU	(16,647,500)	(2,362,500)
Net Long Position (MMBtu), Year Three | MMBTU	(7,770,000)	(13,605,000)
Net Long Position (MMBtu), Year Four | MMBTU	1,160,000	1,380,000
Net Long Position (MMBtu), Year Five | MMBTU	535,000	21,020,000
Net Long (Short) Positions (MMBtu), year Six | MMBTU	0	457,500