Derivative Instruments - Narrative (Details)	9 Months Ended			12 Months Ended
	Sep. 30, 2023 USD ($) Bcf	Sep. 30, 2023 USD ($) MBbls	Sep. 30, 2023 USD ($)	Dec. 31, 2022 USD ($) Bcf	Dec. 31, 2022 USD ($) MBbls
Derivative Instruments, Gain (Loss)
Maximum additional collateral as percentage of derivative liability (in percent)			100.00%
Aggregate fair value of derivative instruments with credit-risk related contingencies	$ 0	$ 0	$ 0	$ 347,600,000	$ 347,600,000
Collateral posted				0	0
OTC Derivative Instrument Contracts
Derivative Instruments, Gain (Loss)
Aggregate fair value of derivative instruments with credit-risk related contingencies	0	0	0	0	0
Exchange traded natural gas contracts
Derivative Instruments, Gain (Loss)
Collateral posted	14,600,000	14,600,000	14,600,000	100,600,000	100,600,000
Henry hub cash bonus
Derivative Instruments, Gain (Loss)
Derivative liability	$ 54,400,000	$ 54,400,000	$ 54,400,000	$ 0	$ 0
Cash flow hedging | Commodity derivatives
Derivative Instruments, Gain (Loss)
Volume of derivative instruments (in Bcf, Mbbls)	1,866,000,000,000	881,000		1,424	1,483