Fair Value Measurements - Fair Value For Our Risk Management Activities (Details) - Commodity Contracts - Level 3 - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Net derivative balance at beginning of period	$ (15,971)	$ 6,622	$ 4,921	$ (4,888)
Deferred as a regulatory asset or liability	(9,808)	(26,859)	(33,408)	(57,286)
Settlements	7,240	8,641	9,948	50,578
Transfers into Level 3 from Level 2	(4,565)	(1,289)	(4,565)	(1,289)
Transfers from Level 3 into Level 2	1,464	11,606	1,464	11,606
Net derivative balance at end of period	(21,640)	(1,279)	(21,640)	(1,279)
Net unrealized gains included in earnings related to instruments still held at end of period	$ 0	$ 0	$ 0	$ 0