Acquisitions and Dispositions - (Schedule Of Major Classes Of Assets And Liabilities Relating To The Disposal Groups Reported As Held For Sale) (Detail) - USD ($) $ in Millions		Jun. 30, 2024	Dec. 31, 2023
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Current assets		$ 4,108	$ 18,529	[1]
Current liabilities		1,830	8,885	[1]
East Ohio | Enbridge
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Current assets	[2]		497
Property, plant and equipment, net			5,443
Other deferred charges and other assets, including goodwill and intangible assets	[3]		2,659
Current liabilities	[4]		560
Long-term debt	[5]		2,286
Other deferred credits and liabilities	[6]		1,437
PSNC | Enbridge
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Current assets	[2]	213	336
Property, plant and equipment, net		3,004	2,806
Other deferred charges and other assets, including goodwill and intangible assets	[3]	827	834
Current liabilities	[4]	172	224
Long-term debt	[5]	948	948
Other deferred credits and liabilities	[6]	$ 710	711
Questar Gas and Wexpro | Enbridge
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Current assets	[2]		764
Property, plant and equipment, net			4,369
Other deferred charges and other assets, including goodwill and intangible assets	[3]		766
Current liabilities	[4]		389
Long-term debt	[5]		1,205
Other deferred credits and liabilities	[6]		1,116
Other Sales | Tredegar Solar Fund I, LLC
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Current assets	[2]		1
Property, plant and equipment, net			26
Other deferred charges and other assets, including goodwill and intangible assets	[3]		0
Current liabilities	[4]		7
Long-term debt	[5]		0
Other deferred credits and liabilities	[6]		$ 2

[1] Dominion Energy’s Consolidated Balance Sheet at December 31, 2023 has been derived from the audited Consolidated Balance Sheet at that date.

[2] Includes cash and cash equivalents of $1 million and $2 million within the PSNC Transaction at June 30, 2024 and December 31, 2023, respectively. Also includes regulatory assets of $81 million and $89 million within the PSNC Transaction at June 30, 2024 and December 31, 2023, respectively. In addition, includes cash and cash equivalents of $4 million and regulatory assets of $75 million within the East Ohio Transaction and cash and cash equivalents of $26 million and regulatory assets of $297 million within the Questar Gas Transaction at December 31, 2023.

[3] ncludes goodwill of $673 million at both June 30, 2024 and December 31, 2023 within the PSNC Transaction. Also includes regulatory assets of $81 million and $86 million within the PSNC Transaction at June 30, 2024 and December 31, 2023, respectively. In addition, includes goodwill of $1.5 billion and regulatory assets of $781 million within the East Ohio Transaction and goodwill of $720 million and regulatory assets of $(39) million within the Questar Gas Transaction at December 31, 2023.

[4] Includes regulatory liabilities of $32 million and $44 million within the PSNC Transaction at June 30, 2024 and December 31, 2023, respectively. In addition, includes regulatory liabilities of $54 million within the East Ohio Transaction and $55 million within the Questar Gas Transaction at December 31, 2023.

[5] Excludes PSNC’s issuance in July 2024 through private placement of $150 million of 5.65% senior notes and $150 million of 6.04% senior notes that mature in 2034 and 2054, respectively.

[6] Includes regulatory liabilities of $427 million and $435 million within the PSNC Transaction at June 30, 2024 and December 31, 2023, respectively. In addition includes regulatory liabilities of $711 million within the East Ohio Transaction and $502 million within the Questar Gas Transaction at December 31, 2023.