Fair Value Accounting Instruments - Narrative (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
Jun. 30, 2024	Dec. 31, 2024
Fair Value Disclosures [Abstract]
Gain on derivative	$ 6.4
Derivative, Gain, Statement of Income or Comprehensive Income [Extensible Enumeration]		Fuel used for electric generation

Indicates line item in statement of income or comprehensive income that includes gain from derivative.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4A
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A

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Namespace Prefix:	us-gaap_
Data Type:	enum2:enumerationSetItemType
Balance Type:	na
Period Type:	duration