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Property, Plant and Equipment (Property, Plant and Equipment) (Parenthetical) (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Property, Plant and Equipment [Line Items]    
Plant under construction [1] $ 13,816 $ 8,230
Virginia Electric and Power Company    
Property, Plant and Equipment [Line Items]    
Plant under construction [1] 12,826 7,548
Project costs not expected to be recovered 206  
Virginia Electric and Power Company | CVOW Commercial Project    
Property, Plant and Equipment [Line Items]    
Plant under construction $ 5,800 $ 2,900
[1] Includes $5.8 billion and $2.9 billion of costs associated with the CVOW Commercial Project at December 31, 2024 and 2023, respectively. The amount at December 31, 2024 is net of $206 million of costs not expected to be recovered from customers.