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Fair Value of Financial Instruments Fair Value Options Quantitative Disclosure (Details) - USD ($)	Sep. 30, 2025	Dec. 31, 2024
Low [Member]
Commodity Contracts
Electricity physical forwards	$ 31.12	$ 14.00
Natural gas financial swaps	1.85	1.86
Financial swaps - electricity	36.00	27.00
High [Member]
Commodity Contracts
Electricity physical forwards	98.97	99.68
Natural gas financial swaps	8.09	6.53
Financial swaps - electricity	95.27	110.00
Weighted Average [Member]
Commodity Contracts
Electricity physical forwards	62.39	59.43
Natural gas financial swaps	2.61	2.68
Financial swaps - electricity	41.48	70.55
Assets [Member]
Commodity Contracts
Electricity physical forwards	0	0
Natural gas financial swaps	1,000,000	0
Financial swaps - electricity	0	1,000,000
Total commodity contracts	1,000,000	1,000,000
Liabilities [Member]
Commodity Contracts
Electricity physical forwards	29,000,000	28,000,000
Natural gas financial swaps	6,000,000	4,000,000
Financial swaps - electricity	1,000,000	3,000,000
Total commodity contracts	$ 36,000,000	$ 35,000,000

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