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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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Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due after one year (or beyond the operating cycle if longer), including liabilities for compensation costs, fringe benefits other than pension and postretirement obligations, rent, contractual rights and obligations, and statutory obligations.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(24))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

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