Summary of Significant Accounting Policies - Narrative (Details)	5 Months Ended	7 Months Ended	12 Months Ended
	Dec. 31, 2024 USD ($) segment	Jul. 21, 2024 segment	Dec. 31, 2025 USD ($) $ / MBoe segment business well	Dec. 31, 2024 USD ($) $ / MBoe well	Dec. 31, 2023 USD ($) $ / MBoe well	May 31, 2024
Property, Plant and Equipment [Line Items]
Number of segments | segment	3	1	3
Number of operating segments | segment		1	3
Number of lines of business | business			3
Internal costs	$ 69,000,000		$ 82,000,000	$ 69,000,000	$ 57,000,000
Interest costs capitalized			$ 32,000,000	$ 54,000,000	$ 41,000,000
Overall average rate of depletion (in dollars per Mcfe) | $ / MBoe			0.95	0.90	0.84
Number of exploratory dry holes | well			0	0	0
Capitalized exploratory well costs	0		$ 0	$ 0	$ 0
Oil and gas producing properties	33,549,913,000		$ 36,785,910,000	$ 33,549,913,000
Depreciation rate percentage			2.80%	3.10%
Impairment and expiration of leases			$ 51,152,000	$ 97,368,000	109,421,000
Property, plant and equipment	44,505,504,000		48,472,497,000	44,505,504,000
Amortization of intangible assets			13,300,000	5,900,000
2026			13,300,000
2027			13,300,000
2028			13,300,000
2029			13,300,000
2030			13,300,000
Impairment of intangible assets			$ 0	0
Largest amount of benefit threshold, percentage (no greater than)			50.00%
Expense recognized related to defined contribution plan			$ 25,100,000	14,500,000	$ 9,000,000.0
Gathering
Property, Plant and Equipment [Line Items]
Interest costs capitalized			8,000,000	3,000,000
Oil and gas producing properties	25,000,000		35,000,000	25,000,000
Transmission
Property, Plant and Equipment [Line Items]
Oil and gas producing properties	4,000,000		15,000,000	4,000,000
Unproved Property
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 1,563,000,000		$ 1,656,000,000	$ 1,563,000,000
NEPA Gathering System
Property, Plant and Equipment [Line Items]
Ownership interest (in percent)						100.00%
Consolidated interest | Eureka Midstream Holdings L L C
Property, Plant and Equipment [Line Items]
Ownership interest (in percent)			60.00%