v3.26.1
Significant Accounting Policies (Reconciliation of Total Cash, Restricted Cash and Equivalents) (Detail) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Jun. 30, 2025
Dec. 31, 2024
Cash Cash Equivalents And Restricted Cash [Line Items]        
Cash and cash equivalents $ 296 $ 250 $ 344 $ 310
Cash and cash equivalents [1] 296 250 [2]    
Restricted cash and equivalents [3],[4] 71 93 69 55
Cash, restricted cash and equivalents shown in the Consolidated Statements of Cash Flows 367 343 413 365
Virginia Electric and Power Company        
Cash Cash Equivalents And Restricted Cash [Line Items]        
Cash and cash equivalents 193 [5] 170 [5],[6] 157 160
Restricted cash and equivalents [3],[4] 60 61 61 46
Cash, restricted cash and equivalents shown in the Consolidated Statements of Cash Flows $ 253 $ 231 $ 218 $ 206
[1] See Note 14 for amounts attributable to VIEs.
[2] Dominion Energy’s Consolidated Balance Sheet at December 31, 2025 has been derived from the audited Consolidated Balance Sheet at that date.
[3] Includes $45 million, $51 million, $51 million and $41 million at VPFS attributable to VIEs at June 30, 2026, June 30, 2025, December 31, 2025 and December 31, 2024, respectively.
[4] Restricted cash and equivalents balances are presented within other current assets in the Companies’ Consolidated Balance Sheets.
[5] See Note 14 for amounts attributable to VIEs.
[6] Virginia Power’s Consolidated Balance Sheet at December 31, 2025 has been derived from the audited Consolidated Balance Sheet at that date.