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Significant Accounting Policies (Schedule of Supplemental Cash Flow Information) (Detail) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2024 | Mar. 31, 2023
Significant noncash investing and financing activities: |  |  |
Accrued capital expenditures | [1] | $ 753 | $ 671
Leases | [2] | 161 | 117
Virginia Electric and Power Company |  |  |
Significant noncash investing and financing activities: |  |  |
Accrued capital expenditures |  | 566 | 460
Leases | [3] | $ 142 | $ 99
[1] | See Notes 3 and 17 for noncash financing activities related to debt assumed with closing of the East Ohio Transaction and the transfer of property associated with the settlement of litigation.
[2] | Includes $26 million and $32 million of financing leases at March 31, 2024 and 2023, respectively, and $135 million and $85 million of operating leases at March 31, 2024 and 2023, respectively.
[3] | Includes $22 million and $31 million of financing leases at March 31, 2024 and 2023, respectively, and $120 million and $68 million of operating leases at March 31, 2024 and 2023, respectively.

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