ACQUISITIONS - WESTON 4 (Details) - Weston Generating Station Unit 4 $ in Millions	9 Months Ended
Sep. 30, 2026 USD ($) MW
Asset Acquisition
Capacity of generation unit (in megawatts) \| MW	500
Wisconsin Electric Power Company
Asset Acquisition
Joint plant ownership percentage	30.00%
Expected acquisition purchase price \| $	$ 150.0
Wisconsin Public Service Corporation
Asset Acquisition
Joint plant ownership percentage	70.00%

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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Purchase price of expected asset acquisition prior to consideration being transferred. Excludes business acquisition.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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The proportionate share of interest (percent) in a jointly owned utility plant.

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The capacity, in megawatts, of a generation unit.

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