Acquisitions and Divestitures - 2026 Pending Acquisitions (Details) - Cornerstone Acquisition - Forecast $ in Millions	6 Months Ended
Jun. 30, 2026 USD ($) MW shares
Asset Acquisition [Line Items]
Consideration transferred \| $	$ 3,450
Payments to acquire businesses \| $	$ 2,550
Payments to acquire business, number of shares (in shares) \| shares	2,400,000
Payments to acquire business, value of stock \| $	$ 900
Lawrenceburg Power Plant
Asset Acquisition [Line Items]
Power generating capacity or generation plant \| MW	1,120
Waterford Energy Center
Asset Acquisition [Line Items]
Power generating capacity or generation plant \| MW	875
Darby Generating Station
Asset Acquisition [Line Items]
Power generating capacity of combustion turbine \| MW	456

Power Generating Capacity Of Natural Gas Fired Combined Cycle Generation Plant

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