Derivative and Hedging Activities - Schedule of Estimated Fair Values of Our Natural Gas and Oil Derivative Instrument Assets (Liabilities) (Details) - Energy Related Derivative $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2025 USD ($) Bcf MMBbls	Dec. 31, 2024 USD ($) Bcf MMBbls
Derivative [Line Items]
Fair Value	$ (181)	$ (54)
Natural gas (Bcf):
Derivative [Line Items]
Notional Volume | Bcf	2,318	2,199
Fair Value	$ (186)	$ (49)
Natural gas (Bcf): | Fixed-price swaps
Derivative [Line Items]
Notional Volume | Bcf	296	369
Fair Value	$ (37)	$ (28)
Natural gas (Bcf): | Collars
Derivative [Line Items]
Notional Volume | Bcf	1,437	1,098
Fair Value	$ (176)	$ (27)
Natural gas (Bcf): | Three-way collars
Derivative [Line Items]
Notional Volume | Bcf	81	161
Fair Value	$ 23	$ 60
Natural gas (Bcf): | Call Option | Long
Derivative [Line Items]
Notional Volume | Bcf	37	73
Fair Value	$ 1	$ 1
Natural gas (Bcf): | Call Option | Short
Derivative [Line Items]
Notional Volume | Bcf	147	219
Fair Value	$ (19)	$ (16)
Natural gas (Bcf): | Basis protection swaps
Derivative [Line Items]
Notional Volume | Bcf	320	279
Fair Value	$ 22	$ (39)
Oil (MMBbls):
Derivative [Line Items]
Notional Volume | MMBbls	1	2
Fair Value	$ 5	$ 4
Oil (MMBbls): | Three-way collars
Derivative [Line Items]
Notional Volume | MMBbls	1	2
Fair Value	$ 5	$ 4
NGLs (MMBbls):
Derivative [Line Items]
Notional Volume | MMBbls	4	7
Fair Value	$ 0	$ (9)
NGLs (MMBbls): | Fixed-price swaps
Derivative [Line Items]
Notional Volume | MMBbls	4	7
Fair Value	$ 0	$ (9)