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Derivative Instruments - The Effect of Derivative Instruments on the Consolidated Statement of Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Derivative [Line Items]
Cash (Paid) Received in Settlement of Commodity Derivative Instruments:	$ (530,391)	$ (10,359)	$ (801,232)	$ (7,954)
Unrealized (Loss) Gain on Commodity Derivative Instruments:	(122,252)	(528,500)	(1,577,804)	(497,491)
(Loss) Gain on Derivative Instruments	(652,643)	(538,859)	(2,379,036)	(505,445)
Interest Rate Swap
Derivative [Line Items]
Cash Paid in Settlement of Interest Rate Swaps	(763)	(1,240)	(1,700)	(2,467)
Unrealized Gain on Interest Rate Swaps	2,131	465	7,353	4,659
(Loss) Gain on Derivative Instruments	1,368	(775)	5,653	2,192
Natural Gas | Commodity Swap
Derivative [Line Items]
Cash (Paid) Received in Settlement of Commodity Derivative Instruments:	(558,374)	(16,492)	(830,193)	(9,942)
Unrealized (Loss) Gain on Commodity Derivative Instruments:	(197,309)	(629,688)	(1,851,422)	(727,147)
(Loss) Gain on Derivative Instruments	(755,683)	(646,180)	(2,681,615)	(737,089)
Natural Gas | Basis Swap
Derivative [Line Items]
Cash (Paid) Received in Settlement of Commodity Derivative Instruments:	27,983	6,133	28,961	1,988
Unrealized (Loss) Gain on Commodity Derivative Instruments:	75,057	101,188	273,618	229,656
(Loss) Gain on Derivative Instruments	$ 103,040	$ 107,321	$ 302,579	$ 231,644

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Gain (loss) incurred in hedging activities.

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The difference between the book value and the sale price of agreements to purchase or sell mineral resources, energy, and agricultural products at some future point. This element refers to the gain (loss) included in earnings and not to the cash proceeds.

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The difference between the book value and the sale price of options, swaps, futures, forward contracts, and other derivative instruments. This element refers to the gain (loss) included in earnings.

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The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

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The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of open derivatives, commodity, or energy contracts, held at each balance sheet date, that was included in earnings for the period.

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