v3.25.2
Variable Interest Entities (Narrative) (Detail) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Variable Interest Entity [Line Items]          
Payable to affiliates [1],[2] $ 1,754   $ 1,754   $ 2,084 [3]
Virginia Electric and Power Company          
Variable Interest Entity [Line Items]          
Payable to affiliates [4] 1,337   1,337   $ 1,549 [5]
Virginia Electric and Power Company | CVOW Commercial Project          
Variable Interest Entity [Line Items]          
Equity Method Investment, Ownership Percentage         50.00%
Variable Interest Entity Not Primary Beneficiary | Virginia Electric and Power Company | DES          
Variable Interest Entity [Line Items]          
Shared Services Purchased 142 $ 128 297 $ 243  
Variable Interest Entity Not Primary Beneficiary | Virginia Electric and Power Company | DES | Related Party          
Variable Interest Entity [Line Items]          
Payable to affiliates 42   42   $ 38
Variable Interest Entity Not Primary Beneficiary | OSWP [Member]          
Variable Interest Entity [Line Items]          
Payable to affiliates $ 8   $ 8   $ 0
[1] See Note 10 for amounts attributable to related parties.
[2] See Note 15 for amounts attributable to VIEs.
[3] Dominion Energy’s Consolidated Balance Sheet at December 31, 2024 has been derived from the audited Consolidated Balance Sheet at that date.
[4] See Note 15 for amounts attributable to VIEs.
[5] Virginia Power’s Consolidated Balance Sheet at December 31, 2024 has been derived from the audited Consolidated Balance Sheet at that date.