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v3.25.3

FINANCING ACTIVITIES - Schedule of Long-Term Debt Information (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Debt Instrument [Line Items] |  |
Total Long-term Debt Outstanding | $ 46,137.6 | $ 42,642.8
Long-term Debt Due Within One Year | 1,898.6 | 3,335.0
Long-term Debt | 44,239.0 | 39,307.8
Trust fund assets one time fee obligation for nuclear fuel disposition | 381.0 | 367.0
Senior Unsecured Notes |  |
Debt Instrument [Line Items] |  |
Senior Unsecured Notes | 37,865.2 | 36,410.9
Pollution Control Bonds |  |
Debt Instrument [Line Items] |  |
Pollution Control Bonds | 1,685.7 | 1,771.3
Notes Payable |  |
Debt Instrument [Line Items] |  |
Notes Payable | 614.8 | 609.9
Securitization Bonds |  |
Debt Instrument [Line Items] |  |
Securitization Bonds | 983.3 | 578.0
Spent Nuclear Fuel Obligation |  |
Debt Instrument [Line Items] |  |
Spent Nuclear Fuel Obligation | 326.7 | 316.3
Junior Subordinated Notes |  |
Debt Instrument [Line Items] |  |
Junior Subordinated Notes | 3,707.9 | 2,579.1
Other Long-term Debt |  |
Debt Instrument [Line Items] |  |
Other Long-term Debt | $ 954.0 | $ 377.3

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