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Property, Plant And Equipment (Schedule Of Property, Plant And Equipment) (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
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Property, Plant and Equipment [Line Items] |  |
Property Plant and Equipment | $ 24,179.9 | $ 24,541.9
Accumulated Depreciation and Amortization | (7,560.4) | (7,629.7)
Net Property, Plant and Equipment | 16,619.5 | 16,912.2
Plant and Equipment Associated with Schahfer Generating Station Retirement | 903.8 |
Gas Distribution Utility |  |
Property, Plant and Equipment [Line Items] |  |
Property Plant and Equipment | 14,010.2 | 14,989.7
Accumulated Depreciation and Amortization | (3,292.9) | (3,556.0)
Electric Utility |  |
Property, Plant and Equipment [Line Items] |  |
Property Plant and Equipment | 6,478.0 | 8,902.3
Accumulated Depreciation and Amortization | (2,305.0) | (3,973.8)
Common Utility |  |
Property, Plant and Equipment [Line Items] |  |
Property Plant and Equipment | 197.3 | 153.3
Accumulated Depreciation and Amortization | (109.3) | (79.5)
Construction Work In Process |  |
Property, Plant and Equipment [Line Items] |  |
Property Plant and Equipment | 572.6 | 457.3
Renewable Generation Assets |  |
Property, Plant and Equipment [Line Items] |  |
Property Plant and Equipment | 175.7 | 0.0
Accumulated Depreciation and Amortization | (0.1) | 0.0
Non-Utility And Other |  |
Property, Plant and Equipment [Line Items] |  |
Property Plant and Equipment | 2,746.1 | 39.3
Accumulated Depreciation and Amortization | $ (1,853.1) | $ (20.4)

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