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Nuclear Decommissioning - Noncurrent Related Party Liabilities (Details) - USD ($) $ in Millions | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Asset Retirement Obligations [Line Items] |  |
Payables related to Regulatory Agreement Units | $ 4,593 | $ 4,518
Affiliated Entities | ComEd |  |
Asset Retirement Obligations [Line Items] |  |
Payables related to Regulatory Agreement Units | 3,798 | 3,780
Affiliated Entities | PECO |  |
Asset Retirement Obligations [Line Items] |  |
Payables related to Regulatory Agreement Units | 312 | 247
Affiliated Entities | CenterPoint |  |
Asset Retirement Obligations [Line Items] |  |
Payables related to Regulatory Agreement Units | 359 | 365
Affiliated Entities | AEP Texas |  |
Asset Retirement Obligations [Line Items] |  |
Payables related to Regulatory Agreement Units | $ 124 | $ 126

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