Fair Value - Schedule of Activity For Energy Commodity Derivative Assets (Liabilities) Measured At Fair Value Using Significant Unobservable Inputs (Level 3) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Fair Value Liabilities Measured On Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Nonoperating Income (Expense)
Level 3 [Member]
Fair Value Liabilities Measured On Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$ 36,550	$ (7,771)
Included in regulatory assets/liabilities	6,783	2,499
Recognized in net income	(2,637)
Purchases	2,367
Settlements	(111)	(925)
Other	(3,000)
Ending Balance	39,952	(6,197)
Natural Gas Exchange Agreements [Member] | Level 3 [Member]
Fair Value Liabilities Measured On Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	(17,734)	(7,771)
Included in regulatory assets/liabilities	6,783	2,499
Settlements	(111)	(925)
Ending Balance	(11,062)	$ (6,197)
Equity Investment [Member] | Level 3 [Member]
Fair Value Liabilities Measured On Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	54,284
Recognized in net income	(2,637)
Purchases and debt conversions	2,367
Other	(3,000)
Ending Balance	$ 51,014