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Variable Interest Entities (Schedule of VIE Assets and Liabilities) (Details) - USD ($) $ in Millions | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Variable Interest Entity [Line Items] |  |  |
Public Utilities, Property, Plant and Equipment, Net | [1] | $ 23,612.6 | $ 22,274.9
Current assets | [1] | 1,943.8 | 4,499.4
Other Assets, Noncurrent |  | 4,105.4 | 4,055.8
Total Assets |  | 29,897.6 | 31,077.2
Current liabilities | [2] | 2,508.0 | 5,265.1
Asset retirement obligations |  | 555.6 | 480.5
Other noncurrent liabilities |  | 308.3 | 298.6
Consolidated Variable Interest Entities |  |  |
Variable Interest Entity [Line Items] |  |  |
Public Utilities, Property, Plant and Equipment, Net |  | 1,346.8 | 1,369.8
Current assets |  | 62.8 | 63.6
Total Assets |  | 1,409.6 | 1,433.4
Current liabilities |  | 55.3 | 68.3
Asset retirement obligations |  | 57.0 | 55.7
Total Liabilities |  | $ 112.3 | $ 124.0
[1] | Includes $1,346.8 million and $1,369.8 million at June 30, 2024 and December 31, 2023, respectively, of net property, plant and equipment assets and $62.8 million and $63.6 million at June 30, 2024 and December 31, 2023, respectively, of current assets of consolidated VIEs that may be used only to settle obligations of the consolidated VIEs. Refer to Note 4, "Noncontrolling Interests," for additional information.
[2] | Includes $55.3 million and $68.3 million at June 30, 2024 and December 31, 2023, respectively, of current liabilities and $57.0 million and $55.7 million at June 30, 2024 and December 31, 2023, respectively, of other liabilities of consolidated VIEs that creditors do not have recourse to our general credit. Refer to Note 4, "Noncontrolling Interests," for additional information.

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