INTANGIBLE ASSETS	9 Months Ended
Sep. 30, 2026
Intangible Asset, Goodwill and Other [Abstract]
INTANGIBLE ASSETS	NOTE 17—INTANGIBLE ASSETS Indefinite-Lived Intangible Assets At September 30, 2026 and December 31, 2025, we had $138.6 million and $12.4 million, respectively, of other indefinite-lived intangible assets. In July 2026, we along with WPS, entered into an option agreement, and we made a refundable payment of $126.2 million for exclusive rights to purchase our share of certain generation projects to be constructed in Wisconsin. In addition, we have $12.4 million of other indefinite-lived assets largely consisting of spectrum frequencies, which enable us to transmit data and voice communications over a wavelength dedicated to us throughout our service territory.

The entire disclosure for intangible asset. Includes, but is not limited to, finite- and indefinite-lived intangible assets, capitalized cost for internal-use software and software to be sold, leased, or marketed. Excludes goodwill.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 985
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481283/985-20-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(15))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/350-30/tableOfContent

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482665/350-30-50-4

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482665/350-30-50-3

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 985
-SubTopic 20
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/985-20/tableOfContent

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