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Revenue From Contracts With Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Loss on Commodity Derivative Instruments	$ (1,507,270)	$ (168,834)	$ (2,012,714)	$ (116,995)
Other Revenue and Operating Income	24,783	21,155	75,227	60,463
Total Revenue and Other Operating (Loss) Income	(880,261)	66,075	(534,399)	631,275
Natural Gas Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers:	514,821	163,054	1,183,178	561,162
NGL Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers:	62,792	15,053	136,176	40,691
Oil/Condensate Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers:	8,302	4,106	17,234	7,630
Total Natural Gas, NGL and Oil Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers:	585,915	182,213	1,336,588	609,483
Purchased Gas Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers:	$ 16,311	$ 31,541	$ 66,500	$ 78,324

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