v3.25.2
Related-Party Transactions (Detail) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Related Party Transaction [Line Items]        
Services provided to affiliates $ 3,810 $ 3,486 $ 7,886 $ 7,118
Virginia Electric and Power Company        
Related Party Transaction [Line Items]        
Commodity purchases from affiliates 147 108 513 306
Services provided to affiliates [1] 2,712 2,537 5,477 5,026
Virginia Electric and Power Company | Related Party        
Related Party Transaction [Line Items]        
Services provided by affiliates [2] 196 171 405 326
Services provided to affiliates $ 3 $ 4 $ 7 $ 8
[1] See Note 19 for amounts attributable to affiliates.
[2] Includes capitalized expenditures of $71 million and $58 million for the three months ended June 30, 2025 and 2024, respectively, and $146 million and $111 million for the six months ended June 30, 2025 and 2024, respectively.