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OTHER CONTINGENCIES AND COMMITMENTS (Third-Party Power Purchase Agreements and Other Agreements) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Power Purchases and Electric Capacity |  |  |
Third-Party Power Purchase Agreements [Line Items] |  |  |
Costs incurred for power purchases and electric capacity | $ 2,100 | $ 2,400 | $ 2,800
Nuclear Fuel |  |  |
Third-Party Power Purchase Agreements [Line Items] |  |  |
Payments for nuclear fuel | 294 | 180 | 44
Gas Contracts |  |  |
Third-Party Power Purchase Agreements [Line Items] |  |  |
Cost of goods | $ 800 | $ 2,500 | $ 2,400

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