Financial Instruments and Risk Management - Recognized Gains and Losses for Derivative Instruments Not Designated as Hedging Instruments (Details) - Not Designated as Hedging Instrument - (Loss) gain on derivative instruments - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Commodity derivative contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss)	$ (510,596)	$ 202,661	$ (856)
Commodity collars
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss)	$ (15,254)	$ 0	$ 0