Property, Plant and Equipment (Property, Plant and Equipment) (Parenthetical) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Plant under construction	[1],[2]	$ 8,230	$ 5,308
Virginia Electric and Power Company
Property, Plant and Equipment [Line Items]
Plant under construction	[1],[2]	7,548	$ 4,685
Virginia Electric and Power Company | Maximum
Property, Plant and Equipment [Line Items]
Incremental cost recovery amount		11,300
Incremental cost excluded from recovery amount		13,700
Construction costs		13,700
Virginia Electric and Power Company | Minimum
Property, Plant and Equipment [Line Items]
Incremental cost recovery amount		10,300
Incremental cost excluded from recovery amount		11,300
Virginia Electric and Power Company | CVOW Commercial Project
Property, Plant and Equipment [Line Items]
Plant under construction		2,900
Estimated project cost		$ 9,800

[1] During 2023, Virginia Power determined the Bookers Mill solar project under development will be utilized to support its utility customers and included the project in its most recent Rider CE application. See Note 13 for additional information.

[2] Includes $2.9 billion associated with the CVOW Commercial Project. Virginia Power’s February 2024 construction progress filing with the Virginia Commission included an estimated total project cost of $9.8 billion, excluding financing costs. In accordance with the Virginia Commission’s order in December 2022, the Companies are subject to a cost sharing mechanism in which Virginia Power will be eligible to recover 50% of such incremental costs which fall between $10.3 billion and $11.3 billion with no recovery of such incremental costs which fall between $11.3 billion and $13.7 billion. There is no cost sharing mechanism for any total construction costs in excess of $13.7 billion, the recovery of which would be determined in a future Virginia Commission proceeding.