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v3.25.2

Acquisitions - Acquisitions Narrative (Details) $ in Millions |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Apr. 10, 2025 USD ($) facility MW | Mar. 31, 2026 USD ($) GW shares | Jun. 30, 2025 USD ($) | Jun. 30, 2024 USD ($) | Jun. 30, 2025 USD ($) | Jun. 30, 2024 USD ($) | May 12, 2025 USD ($)
Business Combination [Line Items] |  |  |  |  |  |  |
Number of power generating facilities acquired | facility | 6 |  |  |  |  |  |
Acquisition-related transaction and integration costs |  |  | $ 43 | $ 6 | $ 51 | $ 15 |
Senior Secured Bridge Facility | Bridge Loan |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |
Revolving credit commitments |  |  |  |  |  |  | $ 4,400
LS Power Portfolio |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |
Acquisition-related transaction and integration costs |  |  | 23 |  | 23 |  |
LS Power Portfolio | Senior Secured Bridge Facility | Bridge Loan |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |
Revolving credit commitments |  |  |  |  |  |  | $ 4,400
LS Power Portfolio | Subsequent Event | Forecast |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |
Acquisition, shares issued (in shares) | shares |  | 24,250,000 |  |  |  |  |
Cash paid to acquire business |  | $ 6,400 |  |  |  |  |
Acquisition, liabilities assumed |  | 3,200 |  |  |  |  |
Acquisition termination fee |  | $ 400 |  |  |  |  |
LS Power Portfolio | Natural Gas | Subsequent Event | Forecast |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |
Number of power generating facilities acquired | GW |  | 13 |  |  |  |  |
LS Power Portfolio | Commercial And industrial Virtual Power Plant Platform | Subsequent Event | Forecast |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |
Number of power generating facilities acquired | GW |  | 6 |  |  |  |  |
Texas Generation Portfolio |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |
Acquisition-related transaction and integration costs |  |  | $ 6 |  | $ 6 |  |
Generation capacity (in MW) | MW | 738 |  |  |  |  |  |
Consideration | $ 560 |  |  |  |  |  |
Working capital adjustments | $ 1 |  |  |  |  |  |

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