Derivative and Hedging Activities - Derivative Instruments (Details) - Energy related derivative $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) Bcf MMBbls	Dec. 31, 2021 USD ($) Bcf MMBbls
Derivative [Line Items]
Fair Value	$ (525)	$ (1,143)
Natural Gas
Derivative [Line Items]
Notional Volume | Bcf	1,777	1,112
Fair Value	$ (501)	$ (785)
Natural Gas | Fixed-price swaps
Derivative [Line Items]
Notional Volume | Bcf	382	637
Fair Value	$ (494)	$ (675)
Natural Gas | Collars
Derivative [Line Items]
Notional Volume | Bcf	721	205
Fair Value	$ 49	$ (82)
Natural Gas | Three-way collars
Derivative [Line Items]
Notional Volume | Bcf	4	0
Fair Value	$ (2)	$ 0
Natural Gas | Call options
Derivative [Line Items]
Notional Volume | Bcf	18	18
Fair Value	$ (22)	$ (17)
Natural Gas | Basis protection swaps
Derivative [Line Items]
Notional Volume | Bcf	652	252
Fair Value	$ (32)	$ (11)
Oil
Derivative [Line Items]
Notional Volume | MMBbls	9	22
Fair Value	$ (24)	$ (358)
Oil | Fixed-price swaps
Derivative [Line Items]
Notional Volume | MMBbls	1	13
Fair Value	$ (32)	$ (356)
Oil | Collars
Derivative [Line Items]
Notional Volume | MMBbls	2	0
Fair Value	$ 7	$ 0
Oil | Basis protection swaps
Derivative [Line Items]
Notional Volume | MMBbls	6	9
Fair Value	$ 1	$ (2)