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Property, Plant And Equipment (Schedule Of Property, Plant And Equipment) (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Property, Plant and Equipment [Line Items]    
Property Plant and Equipment $ 30,482.1 $ 27,551.3
Accumulated Depreciation and Amortization (8,207.2) (7,708.7)
Net Property, Plant and Equipment 22,274.9 19,842.6
Gas Distribution Utility    
Property, Plant and Equipment [Line Items]    
Property Plant and Equipment 18,154.5 16,576.4
Accumulated Depreciation and Amortization (3,924.4) (3,678.1)
Electric Utility    
Property, Plant and Equipment [Line Items]    
Property Plant and Equipment 7,907.9 7,162.4
Accumulated Depreciation and Amortization (2,709.5) (2,557.4)
Common Utility    
Property, Plant and Equipment [Line Items]    
Property Plant and Equipment 274.2 271.7
Accumulated Depreciation and Amortization (174.2) (160.0)
Construction Work In Process    
Property, Plant and Equipment [Line Items]    
Property Plant and Equipment 1,261.1 1,398.2
Renewable Generation Assets    
Property, Plant and Equipment [Line Items]    
Property Plant and Equipment 1,434.4 702.2
Accumulated Depreciation and Amortization (64.5) (29.7)
Non-Utility And Other    
Property, Plant and Equipment [Line Items]    
Property Plant and Equipment 1,450.0 1,440.4
Accumulated Depreciation and Amortization $ (1,334.6) $ (1,283.5)