v3.25.2
Significant Accounting Policies (Schedule of Supplemental Cash Flow Information) (Detail) - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Significant noncash investing and financing activities:    
Accrued capital expenditures [1] $ 871 $ 929
Leases [1],[2] 37 196
Virginia Electric and Power Company    
Significant noncash investing and financing activities:    
Accrued capital expenditures 685 749
Leases [3] $ 29 $ 171
[1] See Note 3 for noncash financing activities related to debt assumed with the closing of the East Ohio and Questar Gas Transactions.
[2] Includes $25 million and $51 million of financing leases at June 30, 2025 and 2024, respectively, and $12 million and $145 million of operating leases at June 30, 2025 and 2024, respectively.
[3] Includes $22 million and $42 million of financing leases at June 30, 2025 and 2024, respectively, and $7 million and $129 million of operating leases at June 30, 2025 and 2024, respectively.