v3.26.1
Operating Segments (Schedule of Segment Reporting Information, by Segment, Virginia Power) (Detail) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Segment Reporting Information [Line Items]          
Operating Revenue $ 4,480 $ 3,810 $ 9,499 $ 7,886  
Electric fuel and other energy-related purchases 1,315 [1] 946 [1] 2,921 [2] 1,908 [2]  
Purchased electric capacity 80 [1] 18 [1] 149 [2] 27 [2]  
Other operations and maintenance 1,878 [1],[3] 933 [1],[3] 2,828 [2],[4] 1,877 [2],[4]  
Depreciation and amortization 615 [1] 580 [1] 1,246 [2] 1,162 [2]  
Other taxes 210 [1] 194 [1] 438 [2] 403 [2]  
Total operating expenses 4,151 2,714 7,778 5,567  
Interest and related charges 555 [1] 505 [1] 1,116 [2] 986 [2]  
Income tax expense (benefit) 122 [1] 220 [1] 170 [2],[5] 260 [2]  
Other income (expense) 643 [6] 409 [6] 611 [7] 386 [7]  
Interest income 35 [6] 34 [6] 70 [7] 74 [7]  
Noncontrolling Interests (11) [6] 54 [6] 153 [7] 100 [7]  
Net Income 340 760 961 1,425  
Capital expenditures     5,807 6,226  
Total assets 121,891   121,891   $ 115,857 [8]
Virginia Electric and Power Company          
Segment Reporting Information [Line Items]          
Operating Revenue [9] 3,421 2,712 7,117 5,477  
Electric fuel and other energy-related purchases [9] 1,071 [10] 729 [10] 2,443 [11] 1,498 [11]  
Purchased electric capacity 78 [10] 17 [10] 143 [11] 24 [11]  
Other operations and maintenance 884 [10],[12] 603 [10],[12] 1,449 [11],[13] 1,259 [11],[13]  
Depreciation and amortization 415 [10] 396 [10] 838 [11] 794 [11]  
Other taxes 98 [10] 92 [10] 205 [11] 189 [11]  
Total operating expenses 2,546 1,837 5,078 3,764  
Interest and related charges [9] 262 [10] 251 [10] 521 [11] 494 [11]  
Income tax expense (benefit) 154 [10] 115 [10] 299 [5],[11] 205 [11]  
Other income (expense) 124 [14] 75 [14] 144 [15] 94 [15]  
Interest income 3 [14] 5 [14] 10 [15] 12 [15]  
Noncontrolling Interests (11) [14] 54 [14] 153 [15] 100 [15]  
Net Income 597 535 1,220 1,020  
Capital expenditures     4,839 5,233  
Total assets 84,551   84,551   $ 79,243 [16]
Virginia Electric and Power Company | Dominion Energy Virginia          
Segment Reporting Information [Line Items]          
Operating Revenue 3,422 2,712 7,187 5,506  
Electric fuel and other energy-related purchases 1,077 [10] 729 [10] 2,436 [11] 1,498 [11]  
Purchased electric capacity 78 [10] 17 [10] 143 [11] 24 [11]  
Other operations and maintenance 609 [10],[12] 531 [10],[12] 1,257 [11],[13] 1,090 [11],[13]  
Depreciation and amortization 417 [10] 396 [10] 838 [11] 793 [11]  
Other taxes 99 [10] 92 [10] 205 [11] 189 [11]  
Total operating expenses 2,280 1,765 4,879 3,594  
Interest and related charges 261 [10] 252 [10] 521 [11] 497 [11]  
Income tax expense (benefit) 151 [10] 110 [10] 330 [11] 243 [11]  
Other income (expense) 48 [14] 39 [14] 90 [15] 74 [15]  
Interest income 4 [14] 5 [14] 10 [15] 12 [15]  
Noncontrolling Interests 112 [14] 80 [14] 217 [15] 148 [15]  
Net Income 670 549 1,340 1,110  
Capital expenditures     4,839 5,233  
Total assets 84,600   84,600    
Virginia Electric and Power Company | Corporate and Other          
Segment Reporting Information [Line Items]          
Operating Revenue (1) 0 (70) (29)  
Electric fuel and other energy-related purchases (6) [10] 0 [10] 7 [11] 0 [11]  
Purchased electric capacity 0 [10] 0 [10] 0 [11] 0 [11]  
Other operations and maintenance 275 [10],[12] 72 [10],[12] 192 [11],[13] 169 [11],[13]  
Depreciation and amortization (2) [10] 0 [10] 0 [11] 1 [11]  
Other taxes (1) [10] 0 [10] 0 [11] 0 [11]  
Total operating expenses 266 72 199 170  
Interest and related charges 1 [10] (1) [10] 0 [11] (3) [11]  
Income tax expense (benefit) 3 [10] 5 [10] (31) [11] (38) [11]  
Other income (expense) 76 [14] 36 [14] 54 [15] 20 [15]  
Interest income (1) [14] 0 [14] 0 [15] 0 [15]  
Noncontrolling Interests (123) [14] (26) [14] (64) [15] (48) [15]  
Net Income (73) $ (14) (120) (90)  
Capital expenditures     0 $ 0  
Total assets $ 0   $ 0    
[1] The significant expense categories and amounts in the segment information presented above align with the segment-level information that is regularly provided to Dominion Energy’s CODM.
[2] The significant expense categories and amounts in the segment information presented above align with the segment-level information that is regularly provided to Dominion Energy’s CODM.
[3] Includes impairment of assets and other charges (benefits).
[4] Includes impairment of assets and other charges (benefits).
[5] The Companies had no adjustments related to the following disclosure categories: foreign tax effects, effects of changes in tax law or rates enacted in the current period and effects of cross-border tax laws.
[6] Items designated are other segment items for each reportable segment.
[7] Items designated are other segment items for each reportable segment.
[8] Dominion Energy’s Consolidated Balance Sheet at December 31, 2025 has been derived from the audited Consolidated Balance Sheet at that date.
[9] See Note 18 for amounts attributable to affiliates.
[10] The significant expense categories and amounts in the segment information presented above align with the segment-level information that is regularly provided to Virginia Power’s CODM.
[11] The significant expense categories and amounts in the segment information presented above align with the segment-level information that is regularly provided to Virginia Power’s CODM.
[12] Includes impairment of assets and other charges (benefits).
[13] Includes impairment of assets and other charges (benefits).
[14] Items designated are other segment items for each reportable segment.
[15] Items designated are other segment items for each reportable segment.
[16] Virginia Power’s Consolidated Balance Sheet at December 31, 2025 has been derived from the audited Consolidated Balance Sheet at that date.