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Property, Plant and Equipment (Regulated and Non-Regulated Generation and Distribution PP&E) (Details) - USD ($)
Dec. 31, 2024
Sep. 30, 2024
Jun. 30, 2024
Dec. 31, 2023
Property, Plant and Equipment [Line Items]        
Electric generation, distribution assets and other $ 32,823,000,000     $ 30,190,000,000
Accumulated depreciation (8,701,000,000) $ (8,505) $ (8,270) (8,602,000,000)
Net electric generation and distribution assets and other 24,122,000,000     21,588,000,000
Regulated Operation [Member]        
Property, Plant and Equipment [Line Items]        
Electric generation, distribution assets and other 10,869,000,000     9,995,000,000
Accumulated depreciation (3,997,000,000)     (3,825,000,000)
Net electric generation and distribution assets and other 6,872,000,000     6,170,000,000
Unregulated Operation [Member]        
Property, Plant and Equipment [Line Items]        
Electric generation, distribution assets and other 21,954,000,000     20,195,000,000
Accumulated depreciation (4,704,000,000)     (4,777,000,000)
Net electric generation and distribution assets and other $ 17,250,000,000     $ 15,418,000,000