Virginia Electric & Power 8-K 8 Nov 23 Other Events Financial data

Document and Entity Information

Document and Entity Information	Nov. 08, 2023
Document Information [Line Items]
Amendment Flag	false
Entity Central Index Key	0000715957
Document Type	8-K
Document Period End Date	Nov. 08, 2023
Entity Registrant Name	DOMINION ENERGY, INC.
Entity Incorporation State Country Code	VA
Entity File Number	001-08489
Entity Tax Identification Number	54-1229715
Entity Address, Address Line One	120 TREDEGAR STREET
Entity Address, City or Town	RICHMOND
Entity Address, State or Province	VA
Entity Address, Postal Zip Code	23219
City Area Code	(804)
Local Phone Number	819-2284
Written Communications	false
Soliciting Material	false
Pre-commencement Tender Offer	false
Pre-commencement Issuer Tender Offer	false
Security12b Title	Common Stock, no par value
Trading Symbol	D
Security Exchange Name	NYSE
Entity Emerging Growth Company	false
Virginia Electric and Power Company
Document Information [Line Items]
Amendment Flag	false
Entity Central Index Key	0000103682
Document Type	8-K
Document Period End Date	Nov. 08, 2023
Entity Registrant Name	Virginia ELECTRIC AND POWER COMPANY
Entity Incorporation State Country Code	VA
Entity File Number	000-55337
Entity Tax Identification Number	54-0418825
Entity Address, Address Line One	120 TREDEGAR STREET
Entity Address, City or Town	RICHMOND
Entity Address, State or Province	VA
Entity Address, Postal Zip Code	23219
City Area Code	(804)
Local Phone Number	819-2284
Written Communications	false
Soliciting Material	false
Pre-commencement Tender Offer	false
Pre-commencement Issuer Tender Offer	false
Security12b Title	Common Stock, no par value
Trading Symbol	D
Security Exchange Name	NYSE
Entity Emerging Growth Company	false

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Operating Revenue		$ 13,945	$ 11,420	$ 11,919
Operating Expenses
Electric fuel and other energy-related purchases		3,711	2,368	2,243
Purchased electric capacity		59	70	53
Purchased gas		426	392	359
Other operations and maintenance		3,376	3,179	3,149
Depreciation, depletion and amortization		2,442	2,103	1,991
Other taxes		676	690	679
Impairment of assets and other charges		2,062	194	2,104
Losses (gains) on sales of assets		426	112	(60)
Total operating expenses		13,178	9,108	10,518
Income from operations		767	2,312	1,401
Earnings (losses) from equity method investees		21	15	(1)
Other income (expense)		109	1,139	663
Interest and related charges		1,002	1,255	1,339
Income (loss) from continuing operations including noncontrolling interests before income tax expense (benefit)		(126)	2,196	725
Income before income tax expense		257	218	175
Income tax expense (benefit)		(148)	239	(59)
Net Income From Continuing Operations Including Noncontrolling Interests		22	1,957	784
Net Income (Loss) From Discontinued Operations Including Noncontrolling Interest	[1],[2]	972	1,357	(1,334)
Net income (loss) including noncontrolling interests		994	3,314	(550)
Noncontrolling Interests			26	(149)
Net Income (Loss) Attributable to Dominion Energy		994	3,288	(401)
Amounts attributable to Dominion Energy
Net income from continuing operations		22	1,931	1,039
Net income (loss) from discontinued operations		$ 972	$ 1,357	$ (1,440)
EPS - Basic
Net income (loss) from continuing operations		$ (0.09)	$ 2.3	$ 1.17
Net income from discontinued operations		1.18	1.68	(1.73)
Net income (loss) attributable to Dominion Energy		1.09	3.98	(0.56)
EPS - Diluted
Net income (loss) from continuing operations		(0.09)	2.3	1.16
Net income (loss) discontinued operations		1.18	1.68	(1.73)
Net income (loss) attributable to Dominion Energy		$ 1.09	$ 3.98	$ (0.57)
Virginia Electric and Power Company
Operating Revenue	[3]	$ 9,654	$ 7,470	$ 7,763
Operating Expenses
Electric fuel and other energy-related purchases	[3]	2,913	1,735	1,636
Purchased electric capacity		46	24	(17)
Affiliated suppliers		342	333	314
Other operations and maintenance		1,709	1,460	1,472
Depreciation, depletion and amortization		1,736	1,364	1,252
Other taxes		303	326	327
Impairment of assets and other charges (benefits)		557	(269)	1,093
Total operating expenses		7,606	4,973	6,077
Income from operations		2,048	2,497	1,686
Other income (expense)			146	80
Interest and related charges	[3]	642	534	516
Income before income tax expense		1,406	2,109	1,250
Income tax expense (benefit)		191	397	229
Net Income (Loss) Attributable to Dominion Energy		$ 1,215	$ 1,712	$ 1,021
[1] Includes income tax expense (benefit) of $ 225 million, $ 374 million and $( 61 ) million for the years ended December 31, 2022, 2021 and 2020, respectively. See Note 9 for amounts attributable to related parties. See Note 25 for amounts attributable to affiliates.

Consolidated Statements of In_2

Consolidated Statements of Income (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Income tax expense (benefit) from discontinued operations	$ 225	$ 374	$ (61)

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Net income (loss) including noncontrolling interests	$ 994	$ 3,314	$ (550)
Net income (loss) attributable to Dominion Energy	994	3,288	(401)
Other comprehensive income (loss), net of taxes:
Net deferred gains (losses) on derivatives-hedging activities, net	67	15	(239)
Changes in unrealized net gains (losses) on investment securities, net of tax	(100)	(7)	43
Changes in net unrecognized pension and other postretirement benefit costs (credits), net of tax	(218)	144	25
Amounts reclassified to net income (loss):
Net derivative (gains) losses-hedging activities, net of tax	42	46	227
Net realized (gains) losses on investment securities	19	(18)	(18)
Net pension and other postretirement benefit costs, net of tax	75	82	37
Changes in other comprehensive income from equity method investees, net of tax	1	(3)	1
Total other comprehensive income (loss)	(114)	259	76
Comprehensive income (loss) including noncontrolling interests	880	3,573	(474)
Comprehensive income (loss) attributable to noncontrolling interests		26	(149)
Comprehensive income (loss) attributable to Dominion Energy	880	3,547	(325)
Virginia Electric and Power Company
Net income (loss) attributable to Dominion Energy	1,215	1,712	1,021
Other comprehensive income (loss), net of taxes:
Net deferred gains (losses) on derivatives-hedging activities, net	60	13	(28)
Changes in unrealized net gains (losses) on investment securities, net of tax	(11)	(2)	6
Amounts reclassified to net income (loss):
Net derivative (gains) losses-hedging activities, net of tax	1	2	2
Net realized (gains) losses on investment securities		(2)	(3)
Total other comprehensive income (loss)	50	11	(23)
Comprehensive income (loss) attributable to Dominion Energy	$ 1,265	$ 1,723	$ 998

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Net deferred gains (losses) on derivatives-hedging activities, tax	$ (22)	$ (6)	$ 81
Changes in unrealized net gains (losses) on investment securities, tax	29	7	(14)
Changes in net unrecognized pension and other postretirement benefit costs, tax	76	(54)	(2)
Net derivative (gains) losses-hedging activities, tax	(15)	(15)	(75)
Net realized (gains) losses on investment securities, tax	(6)	5	6
Net pension and other postretirement benefit costs, tax	(27)	(29)	(13)
Changes in other comprehensive income from equity method investees, tax		1	(1)
Virginia Electric and Power Company
Net deferred gains (losses) on derivatives-hedging activities, tax	(20)	(4)	9
Changes in unrealized net gains (losses) on investment securities, tax	4	0	(3)
Net derivative (gains) losses-hedging activities, tax	(1)	(1)	0
Net realized (gains) losses on investment securities, tax	$ 0	$ 1	$ 1

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions		Dec. 31, 2022		Dec. 31, 2021
Current Assets
Cash and cash equivalents		$ 120		$ 249
Customer receivables (less allowance for doubtful accounts of $26 and $35)		2,157		1,643
Other receivables (less allowance for doubtful accounts of $2 at both dates)		383		334
Inventories:
Materials and supplies		1,132		1,113
Fossil fuel		358		320
Gas stored		38		36
Derivative assets		1,137	[1]	122
Derivative assets		1,019		116
Margin deposit assets		480		678
Prepayments		294		237
Regulatory assets		1,883		1,223
Other		210		138
Current assets held for sale		1,776		1,182
Total current assets		9,850		7,269
Investments
Nuclear decommissioning trust funds		5,957		7,950
Investment in equity method affiliates	[2]	295		162
Other		325		335
Total investments		6,577		8,447
Property, Plant and Equipment
Property, plant and equipment		75,178		71,496
Accumulated depreciation, depletion and amortization		(23,352)		(22,595)
Total property, plant and equipment, net		51,826		48,901
Deferred Charges and Other Assets
Goodwill	[3]	4,143		4,253
Pension and other postretirement benefit assets		1,479		1,930
Intangible assets, net		796		712
Derivative assets	[5]	1,039	[4]	491
Regulatory assets		8,265		7,886
Other		1,466		1,604
Total deferred charges and other assets		17,188		16,876
Noncurrent Assets Held for Sale		18,802		18,097
Total assets		104,243		99,590
Current Liabilities
Securities due within one year		3,337		838
Short-term debt		3,423		2,314
Accounts payable		1,165		832
Accrued interest, payroll and taxes		910		905
Derivative liabilities	[6]	778		359
Derivative liabilities		772		356
Regulatory liabilities		748		889
Other	[7]	1,697		1,585
Current liabilities held for sale		1,398		954
Total current liabilities		13,450		8,673
Long-Term Debt
Long-term debt		32,515		31,623
Junior subordinated notes		1,387		1,386
Supplemental credit facility borrowings		450		0
Other		232		838
Total long-term debt		34,584		33,847
Deferred Credits and Other Liabilities
Deferred income taxes and investment tax credits		5,397		5,466
Regulatory liabilities		8,417		9,024
Asset retirement obligations		5,062		5,137
Derivative liabilities		625		508
Other		1,276		1,308
Total deferred credits and other liabilities		20,777		21,443
Noncurrent Liabilities Held for Sale		7,551		6,709
Total liabilities		76,362		70,672
Commitments and Contingencies (see Note 23)
Preferred stock (See Note 19)		0		1,610
Shareholders' Equity
Preferred stock (See Note 19)		1,783		1,783
Common stock - no par	[8]	23,605		21,610
Retained earnings		4,065		5,373
Accumulated other comprehensive income (loss)		(1,572)		(1,458)
Shareholders' equity		27,881		27,308
Total shareholders' equity		27,881		27,308
Total liabilities, mezzanine equity and shareholders' equity		104,243		99,590
Virginia Electric and Power Company
Current Assets
Cash and cash equivalents		22		26
Customer receivables (less allowance for doubtful accounts of $26 and $35)		1,578		1,172
Other receivables (less allowance for doubtful accounts of $2 at both dates)		204		112
Affiliated receivables		7		37
Inventories:
Materials and supplies		663		610
Fossil fuel		261		261
Derivative assets	[9]	765	[1]	76
Margin deposit assets		310		167
Prepayments		43		37
Regulatory assets		1,140		850
Other		9		2
Total current assets		5,002		3,350
Investments
Nuclear decommissioning trust funds		3,202		3,734
Other		3		3
Total investments		3,205		3,737
Property, Plant and Equipment
Property, plant and equipment		54,697		49,890
Accumulated depreciation, depletion and amortization		(16,218)		(15,234)
Total property, plant and equipment, net		38,479		34,656
Deferred Charges and Other Assets
Pension and other postretirement benefit assets	[9]	518		431
Intangible assets, net		536		395
Regulatory assets		4,247		4,130
Other	[9]	1,207		1,233
Total deferred charges and other assets		6,508		6,189
Total assets		53,194		47,932
Current Liabilities
Securities due within one year		1,164		313
Short-term debt		941		745
Accounts payable		600		402
Payables to affiliates		255		121
Affiliated current borrowings		2,024		699
Accrued interest, payroll and taxes		270		274
Asset retirement obligations		350		191
Derivative liabilities	[6],[10]	298		134
Regulatory liabilities		506		647
Other		826		567
Total current liabilities		7,234		4,093
Long-Term Debt
Long-term debt		14,916		13,453
Other		65		503
Total long-term debt		14,981		13,956
Deferred Credits and Other Liabilities
Deferred income taxes and investment tax credits		3,452		3,183
Regulatory liabilities		5,499		5,740
Asset retirement obligations		3,743		3,732
Other	[10]	1,040		1,248
Total deferred credits and other liabilities		13,734		13,903
Total liabilities		35,949		31,952
Commitments and Contingencies (see Note 23)
Shareholders' Equity
Common stock - no par	[11]	5,738		5,738
Other paid-in capital		1,113		1,113
Retained earnings		10,385		9,170
Accumulated other comprehensive income (loss)		9		(41)
Shareholders' equity		17,245		15,980
Total liabilities, mezzanine equity and shareholders' equity		$ 53,194		$ 47,932
[1] Includes $ 118 million and $ 6 million reported in current assets held for sale in Dominion Energy's Consolidated Balance Sheets at December 31, 2022 and 2021, respectively. Excludes liability to Atlantic Coast Pipeline. Goodwill amounts do not contain any accumulated impairment losses. Includes $ 1 million reported in noncurrent assets held for sale in Dominion Energy's Consolidated Balance Sheets at December 31, 2022. Virginia Power’s noncurrent derivative assets are presented in other deferred charges and other assets in its Consolidated Balance Sheets. Includes $ 6 million and $ 3 million reported in current liabilities held for sale in Dominion Energy's Consolidated Balance Sheets at December 31, 2022 and 2021, respectively. See Note 9 for amounts attributable to related parties. 1.8 billion shares authorized; 835 million shares and 810 million shares outstanding at December 31, 2022 and 2021, respectively. See Note 25 for amounts attributable to affiliates. See Note 25 for amounts attributable to affiliates. 500,000 shares authorized; 274,723 shares outstanding at December 31, 2022 and 2021.

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Customer receivables, allowance for doubtful accounts	$ 26	$ 35
Other receivables, allowance for doubtful accounts	$ 2	$ 2
Common stock, shares authorized	1,800,000,000	1,800,000,000
Common stock, shares outstanding	835,000,000	810,000,000
Virginia Electric and Power Company
Customer receivables, allowance for doubtful accounts	$ 21	$ 28
Other receivables, allowance for doubtful accounts	$ 2	$ 2
Common stock, shares authorized	500,000	500,000
Common stock, shares outstanding	274,723	274,723

Consolidated Statements of Equi

Consolidated Statements of Equity - USD ($) $ in Millions	Total	Series A Preferred Stock	Cumulative Effect, Period of Adoption, Adjustment	Preferred Stock	Preferred Stock Series A Preferred Stock	Common Stock	Common Stock Series A Preferred Stock	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	AOCI	Total Shareholders' Equity	Total Shareholders' Equity Series A Preferred Stock	Total Shareholders' Equity Cumulative Effect, Period of Adoption, Adjustment	Noncontrolling Interests
Beginning balance at Dec. 31, 2019	$ 34,033		$ (48)	$ 2,387		$ 23,824		$ 7,576	$ (48)	$ (1,793)	$ 31,994		$ (48)	$ 2,039
Beginning balance (in shares) at Dec. 31, 2019				2,000,000		838,000,000
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201602Member
Net income (loss) including noncontrolling interests	$ (550)							(401)			(401)			(149)
Issuance of stock	481					$ 481					481
Issuance of stock (in shares)						7,000,000
Stock repurchases	(3,080)					$ (3,080)					(3,080)
Stock repurchases (in shares)						(38,900,000)
Stock awards (net of change in unearned compensation)	29					$ 29					29
Preferred stock dividends (See Note 19)	(65)							(65)			(65)
Common dividends and distributions	(3,037)							(2,873)			(2,873)			(164)
Other comprehensive loss, net of tax	76									76	76
GT&S Transaction closing	(1,367)					17					17			(1,384)
Other	(11)					(13)					(13)			2
Ending balance at Dec. 31, 2020	26,461			$ 2,387		$ 21,258		4,189		(1,717)	26,117			344
Ending Balance (in shares) at Dec. 31, 2020				2,000,000		806,000,000
Net income (loss) including noncontrolling interests	3,314							3,288			3,288			26
Issuance of stock	1,332			$ 992		$ 340					1,332
Issuance of stock (in shares)				1,000,000		4,000,000
Stock repurchases (in shares)						0
Stock awards (net of change in unearned compensation)	28					$ 28					28
Preferred stock dividends (See Note 19)	(68)							(68)			(68)
Common dividends and distributions	(2,083)							(2,036)			(2,036)			(47)
Other comprehensive loss, net of tax	259									259	259
Reclassification of Series A Preferred Stock to Mezzanine Equity		$ (1,610)			$ (1,596)		$ (14)					$ (1,610)
Reclassification of Series A Preferred Stock to Mezzanine Equity (in shares)					(1,000,000)
Sale of non-wholly-owned nonregulated solar facilities	(323)													$ (323)
Other	(2)					(2)					(2)
Ending balance at Dec. 31, 2021	27,308			$ 1,783		$ 21,610		5,373		(1,458)	27,308
Ending Balance (in shares) at Dec. 31, 2021				2,000,000		810,000,000
Net income (loss) including noncontrolling interests	994							994			994
Issuance of stock	1,969					$ 1,969					1,969
Issuance of stock (in shares)						25,000,000
Stock repurchases (in shares)						0
Stock awards (net of change in unearned compensation)	26					$ 26					26
Preferred stock dividends (See Note 19)	(93)							(93)			(93)
Common dividends and distributions	(2,209)							(2,209)			(2,209)
Other comprehensive loss, net of tax	(114)									(114)	(114)
Ending balance at Dec. 31, 2022	$ 27,881			$ 1,783		$ 23,605		$ 4,065		$ (1,572)	$ 27,881
Ending Balance (in shares) at Dec. 31, 2022				2,000,000		835,000,000

Consolidated Statements of Eq_2

Consolidated Statements of Equity (Parenthetical) - $ / shares	3 Months Ended								12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement Of Stockholders Equity [Abstract]
Dividends declared per common share	$ 0.63	$ 0.63	$ 0.63	$ 0.63	$ 0.6675	$ 0.6675	$ 0.6675	$ 0.6675	$ 2.67	$ 2.52	$ 3.45

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Operating Activities
Net income (loss) including noncontrolling interests	$ 994	$ 3,314	$ (550)
Net income (loss)	994	3,288	(401)
Adjustments to reconcile net income (loss) including noncontrolling interests to net cash provided by operating activities:
Depreciation, depletion and amortization (including nuclear fuel)	3,113	2,768	2,836
Deferred income taxes and investment tax credits	9	487	(324)
Gain from sale of Q-Pipe Group and GT&S Transaction	(27)	(685)	(134)
Contribution to pension plan			(250)
Net loss on sale of interest in renewable generation facilities		211
Provision for refunds and rate credits to electric utility customers		356
Impairment of assets and other charges	1,996	182	2,345
Loss from investment in Atlantic Coast Pipeline	7	20	2,405
Losses (gains) on sales of assets and equity method investments	467	(97)	(63)
Net (gains) losses on nuclear decommissioning trusts funds and other investments	505	(639)	(412)
Other adjustments	(28)	294	224
Changes in:
Accounts receivable	(985)	(183)	(292)
Inventories	(216)	(74)	39
Deferred fuel and purchased gas costs, net	(2,021)	(939)	212
Prepayments	(68)	(20)	7
Accounts payable	556	156	35
Accrued interest, payroll and taxes	41	41	(53)
Margin deposit assets and liabilities	198	(664)	26
Net realized and unrealized changes related to derivative activities	(47)	435	(36)
Pension and other postretirement benefits	(461)	(314)	(319)
Other operating assets and liabilities	(333)	(612)	(469)
Net cash provided by operating activities	3,700	4,037	5,227
Investing Activities
Plant construction and other property additions (including nuclear fuel)	(7,591)	(5,960)	(6,020)
Acquisition of solar development projects	(167)	(101)	(311)
Proceeds from sale of Hope	727
Proceeds from GT&S Transaction and sale of Q-Pipe Group	19	1,522	3,687
Repayment of Q-Pipe Transaction deposit		(1,265)
Proceeds from sale of non-wholly-owned nonregulated solar facilities		495
Proceeds from sales of securities	3,282	3,985	4,278
Purchases of securities	(3,067)	(3,939)	(4,379)
Proceeds from sales of assets and equity method investments	252	159	143
Contributions to equity method affiliates	(43)	(1,021)	(148)
Acquisition of equity method investments			(178)
Short-term deposit	(2,000)
Return of short-term deposit	2,000
Other	(158)	(122)	12
Net cash used in investing activities	(6,746)	(6,247)	(2,916)
Financing Activities
Issuance (repayment) of short-term debt, net	1,109	1,419	(16)
Issuance of short-term notes		1,265	1,125
Repayment and repurchase of short-term notes		(1,265)	(1,125)
Issuance of supplemental 364-day credit facility borrowings			225
Repayment of supplemental 364-day credit facility repayments		(225)
Issuance and remarketing of long-term debt	4,965	6,400	6,577
Repayment and repurchase of long-term debt (including redemption premiums)	(1,388)	(3,750)	(2,879)
Supplemental credit facility borrowings	900	900
Supplemental credit facility repayments	(450)	(900)
Issuance of preferred stock		742
Series A Preferred Stock redemption	(1,610)
Issuance of common stock	1,866	192	159
Repurchase of common stock			(3,080)
Common dividend payments	(2,209)	(2,036)	(2,873)
Other	(204)	(371)	(446)
Net cash provided by (used in) financing activities	2,979	2,371	(2,333)
Increase (decrease) in cash, restricted cash and equivalents	(67)	161	(22)
Cash, restricted cash and equivalents at beginning of period	408	247	269
Cash, restricted cash and equivalents at end of period	341	408	247
Virginia Electric and Power Company
Operating Activities
Net income (loss)	1,215	1,712	1,021
Adjustments to reconcile net income (loss) including noncontrolling interests to net cash provided by operating activities:
Depreciation, depletion and amortization (including nuclear fuel)	1,892	1,521	1,421
Deferred income taxes and investment tax credits	191	343	(206)
Impairment of assets and other charges (benefits)	493	(269)	1,079
Provision for refunds to customers		356
Other adjustments	24	19	(50)
Changes in:
Accounts receivable	(629)	(112)	(266)
Affiliated receivables and payables	165	(175)	78
Inventories	(71)	(10)	10
Deferred fuel and purchased gas costs, net	(1,393)	(652)	131
Prepayments	(7)	(4)	(5)
Accounts payable	145	19	6
Accrued interest, payroll and taxes	(4)	21	(4)
Margin deposit assets and liabilities	(143)	(166)	(1)
Net realized and unrealized changes related to derivative activities	109		(6)
Other operating assets and liabilities	(159)	(106)	(308)
Net cash provided by operating activities	1,828	2,497	2,900
Investing Activities
Plant construction and other property additions	(4,909)	(3,521)	(3,138)
Purchases of nuclear fuel	(201)	(160)	(199)
Acquisition of solar development projects	(77)	(75)	(35)
Proceeds from sales of securities	1,538	1,791	884
Purchases of securities	(1,580)	(1,789)	(936)
Other	34		21
Net cash used in investing activities	(5,195)	(3,754)	(3,403)
Financing Activities
Issuance (repayment) of short-term debt, net	196	700	(198)
Issuance of affiliated current borrowings, net	1,325	319	273
Issuance and remarketing of long-term debt	2,338	1,000	1,327
Repayment and repurchase of long-term debt (including redemption premiums)	(438)	(450)	(427)
Common dividend payments		(300)	(430)
Other	(56)	(21)	(31)
Net cash provided by (used in) financing activities	3,365	1,248	514
Increase (decrease) in cash, restricted cash and equivalents	(2)	(9)	11
Cash, restricted cash and equivalents at beginning of period	26	35	24
Cash, restricted cash and equivalents at end of period	$ 24	$ 26	$ 35

Virginia Electric and Power Com

Virginia Electric and Power Company Consolidated Statements of Common Shareholder's Equity - USD ($) shares in Thousands, $ in Millions	Total	Common Stock	AOCI	Virginia Electric and Power Company	Virginia Electric and Power Company Common Stock	Virginia Electric and Power Company Other Paid-In Capital	Virginia Electric and Power Company Retained Earnings	Virginia Electric and Power Company AOCI
Beginning balance at Dec. 31, 2019				$ 13,989	$ 5,738	$ 1,113	$ 7,167	$ (29)
Beginning balance (in shares) at Dec. 31, 2019		838,000			275
Net income (loss) attributable to Dominion Energy	$ (401)			1,021			1,021
Dividends				(430)			(430)
Other comprehensive loss, net of tax	76		$ 76	(23)				(23)
Ending balance at Dec. 31, 2020			(1,717)	14,557	$ 5,738	1,113	7,758	(52)
Ending Balance (in shares) at Dec. 31, 2020		806,000			275
Net income (loss) attributable to Dominion Energy	3,288			1,712			1,712
Dividends				(300)			(300)
Other comprehensive loss, net of tax	259		259	11				11
Ending balance at Dec. 31, 2021	27,308		(1,458)	15,980	$ 5,738	1,113	9,170	(41)
Ending Balance (in shares) at Dec. 31, 2021		810,000			275
Net income (loss) attributable to Dominion Energy	994			1,215			1,215
Other comprehensive loss, net of tax	(114)		(114)	50				50
Ending balance at Dec. 31, 2022	$ 27,881		$ (1,572)	$ 17,245	$ 5,738	$ 1,113	$ 10,385	$ 9
Ending Balance (in shares) at Dec. 31, 2022		835,000			275

Nature of Operations

Nature of Operations	12 Months Ended
	Dec. 31, 2022
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Nature of Operations	NOTE 1. NATURE OF OPERATIONS Dominion Energy, headquartered in Richmond, Virginia, is one of the nation’s largest producers and distributors of energy. Dominion Energy’s operations are conducted through various subsidiaries, including Virginia Power. Dominion Energy’s operations also include DESC, regulated gas distribution operations in the eastern and Rocky Mountain regions of the U.S. and nonregulated electric generation. In addition, see Note 3 for a description of the sale of substantially all of Dominion Energy’s gas transmission and storage operations through the GT&S Transaction completed in November 2020 and the sale of the Q-Pipe Group completed in December 2021. In connection with the comprehensive business review announced in November 2022, Dominion Energy entered into agreements in September 2023 to sell all of its regulated gas distribution operations, expect for DESC's, to Enbridge. In addition, Dominion Energy completed the sale in September 2023 of its remaining 50 % noncontrolling partnership interest in Cove Point to BHE under the agreement entered into in July 2023. As discussed in Notes 3 and 9, these operations are classified as discontinued operations and held for sale in Dominion Energy's Consolidated Financial Statements. Subsequently in September 2023, Dominion Energy revised its primary operating segments and manages its daily operations through three primary operating segments: Dominion Energy Virginia, Dominion Energy South Carolina and Contracted Energy. Dominion Energy also reports a Corporate and Other segment, which includes its corporate, service company and other functions (including unallocated debt) as well as its noncontrolling interest in Dominion Privatization, its noncontrolling interest in Wrangler (through March 2022) and Hope (through August 2022). In addition, Corporate and Other includes specific items attributable to Dominion Energy’s operating segments that are not included in profit measures evaluated by executive management in assessing the operating segments’ performance or in allocating resources as well as the net impact of the operations included in the East Ohio, PSNC and Questar Gas Transactions, its noncontrolling interest in Cove Point and gas transmission and storage operations, including its noncontrolling interest in Atlantic Coast Pipeline, reported as discontinued operations which are discussed in Notes 3 and 9. Dominion Energy's Consolidated Financial Statements and Notes have been recast to reflect these changes in presentation. Virginia Power is a regulated public utility that generates, transmits and distributes electricity for sale in Virginia and northeastern North Carolina. Virginia Power is a member of PJM, an RTO, and its electric transmission facilities are integrated into the PJM wholesale electricity markets. All of Virginia Power’s stock is owned by Dominion Energy. Virginia Power manages its daily operations through one primary operating segment: Dominion Energy Virginia. It also reports a Corporate and Other segment that primarily includes specific items attributable to its operating segment that are not included in profit measures evaluated by executive management in assessing the segment’s performance or in allocating resources. See Note 26 for further discussion of the Companies’ operating segments.

Significant Accounting Policies

Significant Accounting Policies	12 Months Ended
	Dec. 31, 2022
Accounting Policies [Abstract]
Significant Accounting Policies	NOTE 2. SIGNIFICANT ACCOUNTING POLICIES General The Companies make certain estimates and assumptions in preparing their Consolidated Financial Statements in accordance with GAAP. These estimates and assumptions affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues, expenses and cash flows for the periods presented. Actual results may differ from those estimates. The Companies’ Consolidated Financial Statements include, after eliminating intercompany transactions and balances, their accounts, those of their respective majority-owned subsidiaries and non-wholly-owned entities in which they have a controlling financial interest. For certain partnership structures, income is allocated based on the liquidation value of the underlying contractual arrangements. Clearway’s ownership interest in Four Brothers and Three Cedars (through December 2021), Terra Nova Renewable Partners’ 33 % interest in certain Dominion Energy nonregulated solar projects (through December 2021) and Brookfield’s 25 % interest in Cove Point (through November 2020) are reflected as noncontrolling interest in Dominion Energy’s Consolidated Financial Statements. The Companies report certain contracts, instruments and investments at fair value. See below and Note 6 for further information on fair value measurements. The Companies consider acquisitions or dispositions in which substantially all of the fair value of the gross assets acquired or disposed of is concentrated into a single identifiable asset or group of similar identifiable assets to be an acquisition or a disposition of an asset, rather than a business. See Notes 3 and 10 for further information on such transactions. Dominion Energy maintains pension and other postretirement benefit plans and Virginia Power participates in certain of these plans. See Note 22 for further information on these plans. Certain amounts in the Companies’ 2021 and 2020 Consolidated Financial Statements and Notes have been reclassified to conform to the 2022 presentation for comparative purposes; however, such reclassifications did not affect the Companies’ net income, total assets, liabilities, equity or cash flows. Effective in 2021, the Companies updated their Statements of Cash Flows to present net charges for allowance for credit risk and write-offs of accounts receivables within other adjustments to reconcile net income to net cash provided by operating activities from the previous presentation within changes in accounts receivable. All prior period information was previously conformed to this presentation, which did not result in a change to net cash provided by operating activities. Amounts disclosed for Dominion Energy are inclusive of Virginia Power, where applicable. Operating Revenue Operating revenue is recorded on the basis of services rendered, commodities delivered, or contracts settled and includes amounts yet to be billed to customers. The Companies collect sales, consumption and consumer utility taxes; however, these amounts are excluded from revenue. Dominion Energy’s customer receivables and current assets held for sale at December 31, 2022 and 2021 included in aggregate $ 1.1 billion and $ 779 million, respectively, of accrued unbilled revenue based on estimated amounts of electricity and natural gas delivered but not yet billed to its utility customers. The balances presented within current assets held for sale were $ 324 million $ 232 million at December 31, 2022 and 2021, respectively. Virginia Power’s customer receivables at December 31, 2022 and 2021 included $ 620 million and $ 398 million, respectively, of accrued unbilled revenue based on estimated amounts of electricity delivered but not yet billed to its customers. See Note 25 for amounts attributable to related parties. The primary types of sales and service activities reported as operating revenue for Dominion Energy are as follows: Revenue from Contracts with Customers • Regulated electric sales consist primarily of state-regulated retail electric sales, and federally-regulated wholesale electric sales and electric transmission services; • Nonregulated electric sales consist primarily of sales of electricity at market-based rates and contracted fixed rates and associated hedging activity as well as sales to Virginia Power customers from non-jurisdictional solar generation facilities; • Regulated gas sales consist primarily of state-regulated natural gas sales and related distribution services; • Regulated gas transportation and storage sales consist of state-regulated sales of gathering services (through August 2022) and sales of transportation services to off-system customers; • Other regulated revenue consists primarily of miscellaneous service revenue from electric and gas distribution operations and sales of excess electric capacity and other commodities; and • Other nonregulated revenue consists primarily of sales of other miscellaneous products. Other nonregulated revenue also includes sales of energy-related products and services from Dominion Energy’s retail energy marketing operations (through December 2021), service concession arrangements (through December 2022) and revenue associated with services provided to entities presented in discontinued operations under transition services agreements. Other Revenue • Other revenue consists primarily of alternative revenue programs, gains and losses from derivative instruments not subject to hedge accounting and lease revenues. The primary types of sales and service activities reported as operating revenue for Virginia Power are as follows: Revenue from Contracts with Customers • Regulated electric sales consist primarily of state-regulated retail electric sales and federally-regulated wholesale electric sales and electric transmission services; • Nonregulated electric sales consists of sales to customers from non-jurisdictional solar generation facilities; • Other regulated revenue consists primarily of sales of excess capacity and other commodities and miscellaneous service revenue from electric distribution operations; and • Other nonregulated revenue consists primarily of revenue from renting space on certain electric transmission poles and distribution towers and service concession arrangements (through October 2022). Other Revenue • Other revenue consists primarily of alternative revenue programs, gains and losses from derivative instruments not subject to hedge accounting and lease revenues. The Companies record refunds to customers as required by state commissions as a reduction to regulated electric sales or regulated gas sales, as applicable. The Companies’ revenue accounted for under the alternative revenue program guidance primarily consists of the equity return for under-recovery of certain riders. Alternative revenue programs compensate the Companies for certain projects and initiatives. Revenues arising from these programs are presented separately from revenue arising from contracts with customers in the categories above. Revenues from electric and gas sales are recognized over time, as the customers of the Companies consume gas and electricity as it is delivered. Fixed fees are recognized ratably over the life of the contract as the stand-ready performance obligation is satisfied, while variable usage fees are recognized when Dominion Energy has a right to consideration from a customer in an amount that corresponds directly with the value to the customer of the performance obligation completed to date. Sales of products and services typically transfer control and are recognized as revenue upon delivery of the product or service. The customer is able to direct the use of, and obtain substantially all of the benefits from, the product at the time the product is delivered. The contract with the customer states the final terms of the sale, including the description, quantity and price of each product or service purchased. Payment for most sales and services varies by contract type but is typically due within a month of billing. Operating revenue for the gas transmission and storage operations sold to BHE as part of the GT&S Transaction and sold to Southwest Gas as part of the Q-Pipe Group sale primarily consisted of FERC-regulated sales of transmission and storage services, LNG terminalling services, sales of extracted products and associated hedging activities and NGL activities, including gathering and processing and sales of production and condensate as well as services performed for Atlantic Coast Pipeline. This revenue is included in discontinued operations in Dominion Energy’s Consolidated Statements of Income. Transportation and storage contracts associated with the operations sold to BHE as part of the GT&S Transaction and sold to Southwest Gas as part of the Q-Pipe Group sale were primarily stand-ready service contracts that include fixed reservation and variable usage fees. LNG terminalling services, included in discontinued operations, are also stand-ready service contracts, primarily consisting of fixed fees, offset by service credits associated with the start-up phase of the Liquefaction Facility. NGLs received during natural gas processing are recorded in discontinued operations at fair value as service revenue recognized over time, and revenue continued to be recognized from the subsequent sale of the NGLs to customers upon delivery. Operating revenue for the gas distribution operations to be sold to Enbridge as part of the East Ohio, PSNC and Questar Gas Transactions primarily consists of state-regulated natural gas sales to residential, commercial and industrial customers and related distribution services, state regulated gas distribution charges to retail distribution service customers opting for alternate suppliers and sales of commodities related to nonregulated extraction activities. This revenue is included in discontinued operations in Dominion Energy's Consolidated Statements of Income. Transportation and storage contracts associated with the operations to be sold to Enbridge as part of the East Ohio, PSNC and Questar Gas Transactions are primarily stand-ready service contracts that include fixed reservation and variable usage fees. Substantially all of the revenue associated with these local gas distribution companies is derived from performance obligations satisfied over time and month-to-month billings according to their respective tariffs. Credit Risk Credit risk is the risk of financial loss if counterparties fail to perform their contractual obligations. In order to minimize overall credit risk, credit policies are maintained, including the evaluation of counterparty financial condition, collateral requirements and the use of standardized agreements that facilitate the netting of cash flows associated with a single counterparty. In addition, counterparties may make available collateral, including letters of credit or cash held as margin deposits, as a result of exceeding agreed-upon credit limits, or may be required to prepay the transaction. The Companies maintain a provision for credit losses based on factors surrounding the credit risk of their customers, historical trends and other information. Expected credit losses are estimated and recorded based on historical experience, current conditions and reasonable and supportable forecasts that affect the collectability of financial assets held at amortized cost as well as expected credit losses on commitments with respect to financial guarantees. Electric Fuel, Purchased Energy and Purchased Gas-Deferred Costs Where permitted by regulatory authorities, the differences between the Companies’ actual electric fuel and purchased energy expenses and Dominion Energy’s purchased gas expenses and the related levels of recovery for these expenses in current rates are deferred and matched against recoveries in future periods. The deferral of costs in excess of current period fuel rate recovery is recognized as a regulatory asset, while rate recovery in excess of current period fuel expenses is recognized as a regulatory liability. Of the cost of fuel used in electric generation and energy purchases to serve Virginia utility customers, at December 31, 2022, approximately 86 % is subject to Virginia Power’s deferred fuel accounting, while substantially all of the remaining amount is subject to recovery through similar mechanisms. Of the cost of fuel used in electric generation and energy purchases to serve South Carolina utility customers, at December 31, 2022, approximately 96 % is subject to DESC’s deferred fuel accounting. Virtually all of East Ohio, Questar Gas, DESC and PSNC’s natural gas purchases are either subject to deferral accounting or are recovered from the customer in the same accounting period as the sale. Dominion Energy can earn certain cost saving sharing incentives under the Wexpro Agreements to the extent that the cost of gas supplied to Questar Gas is a certain amount lower than third-party market rates. In 2022, Dominion Energy recorded $ 27 million for such incentives, reflected in discontinued operations in Dominion Energy's Consolidated Statements of Income. No amounts were recorded for the years ended December 31, 2021 or 2020. Income Taxes A consolidated federal income tax return is filed for Dominion Energy and its subsidiaries, including Virginia Power. In addition, where applicable, combined income tax returns for Dominion Energy and its subsidiaries are filed in various states; otherwise, separate state income tax returns are filed. Virginia Power participates in intercompany tax sharing agreements with Dominion Energy and its subsidiaries. Current income taxes are based on taxable income or loss and credits determined on a separate company basis. Under the agreements, if a subsidiary incurs a tax loss or earns a credit, recognition of current income tax benefits is limited to refunds of prior year taxes obtained by the carryback of the net operating loss or credit or to the extent the tax loss or credit is absorbed by the taxable income of other Dominion Energy consolidated group members. Otherwise, the net operating loss or credit is carried forward and is recognized as a deferred tax asset until realized. Accounting for income taxes involves an asset and liability approach. Deferred income tax assets and liabilities are provided, representing future effects on income taxes for temporary differences between the bases of assets and liabilities for financial reporting and tax purposes. Accordingly, deferred taxes are recognized for the future consequences of different treatments used for the reporting of transactions in financial accounting and income tax returns. The Companies establish a valuation allowance when it is more-likely-than-not that all, or a portion, of a deferred tax asset will not be realized. Where the treatment of temporary differences is different for rate-regulated operations, a regulatory asset is recognized if it is probable that future revenues will be provided for the payment of deferred tax liabilities. The Companies recognize positions taken, or expected to be taken, in income tax returns that are more-likely-than-not to be realized, assuming that the position will be examined by tax authorities with full knowledge of all relevant information. If it is not more-likely-than-not that a tax position, or some portion thereof, will be sustained, the related tax benefits are not recognized in the financial statements. Unrecognized tax benefits may result in an increase in income taxes payable, a reduction of income tax refunds receivable or changes in deferred taxes. Also, when uncertainty about the deductibility of an amount is limited to the timing of such deductibility, the increase in income taxes payable (or reduction in tax refunds receivable) is accompanied by a decrease in deferred tax liabilities. Except when such amounts are presented net with amounts receivable from or amounts prepaid to tax authorities, noncurrent income taxes payable related to unrecognized tax benefits are classified in other deferred credits and other liabilities on the Consolidated Balance Sheets and current payables are included in accrued interest, payroll and taxes on the Consolidated Balance Sheets. The Companies recognize interest on underpayments and overpayments of income taxes in interest expense and other income, respectively. Penalties are also recognized in other income. In 2021, Dominion Energy reflected a $ 21 million benefit from the reversal of interest expense and a $ 7 million benefit from the reversal of penalty expense on uncertain tax positions that were effectively settled. At December 31, 2022, Virginia Power had a net income tax-related affiliated payable of $ 22 million, comprised of $ 25 million of federal income taxes payable to, and $ 3 million of state income taxes receivable from, Dominion Energy. Virginia Power’s net affiliated balances are expected to be paid to Dominion Energy. At December 31, 2021, Virginia Power had an income tax-related affiliated receivable of $ 35 million, comprised of $ 33 million of federal income taxes and $ 2 million of state income taxes receivable from Dominion Energy. These affiliated balances were received from Dominion Energy. Investment tax credits are recognized by nonregulated operations in the year qualifying property is placed in service. For regulated operations, investment tax credits are deferred and amortized over the service lives of the properties giving rise to the credits. Production tax credits are recognized as energy is generated and sold. The IRA allows the election of either the investment tax credit or production tax credit for certain technologies including solar and wind. Such election is made on a project-by-project basis and the choice of credit may vary based on a combination of factors including, but not limited to, capital expenditures and net capacity factors. Cash, Restricted Cash and Equivalents Cash, restricted cash and equivalents include cash on hand, cash in banks and temporary investments purchased with an original maturity of three months or less. Current banking arrangements generally do not require checks to be funded until they are presented for payment. The following table illustrates the checks outstanding but not yet presented for payment and recorded in accounts payable for the Companies: At December 31, 2022 2021 (millions) Dominion Energy $ 35 $ 54 Virginia Power 21 15 Restricted Cash and Equivalents The Companies hold restricted cash and equivalent balances that primarily consist of amounts held for litigation settlements, customer deposits, federal assistance funds and future debt payments on SBL Holdco and Dominion Solar Projects III, Inc.’s term loan agreements (through December 2021), on DECP Holdings’ term loan agreement and on Eagle Solar’s senior note agreement. The following table provides a reconciliation of the total cash, restricted cash and equivalents reported within the Companies’ Consolidated Balance Sheets to the corresponding amounts reported within the Companies’ Consolidated Statements of Cash Flows for the years ended December 31, 2022, 2021, 2020 and 2019: Cash, Restricted Cash and Equivalents at End/Beginning of Year December 31, 2022 December 31, 2021 December 31, 2020 December 31, 2019 (millions) Dominion Energy Cash and cash equivalents (1) $ 153 $ 283 $ 179 $ 166 Restricted cash and equivalents (2) 188 125 68 103 Cash, restricted cash and equivalents shown in the $ 341 $ 408 $ 247 $ 269 Virginia Power Cash and cash equivalents $ 22 $ 26 $ 35 $ 17 Restricted cash and equivalents (3) 2 — — 7 Cash, restricted cash and equivalents shown in the $ 24 $ 26 $ 35 $ 24 (1) At December 31, 2022, 2021, 2020 and 2019, Dominion Energy had $ 34 million, $ 34 million, $ 21 million and $ 47 million, respectively, of cash and cash equivalents included in current assets held for sale. (2) At December 31, 2022, 2021, 2020 and 2019, Dominion Energy had $ 2 million, less than $ 1 million, $ 3 million and $ 12 million, respectively, of restricted cash and equivalents included in current assets held for sale with the remaining balances presented within other current assets in Dominion Energy's Consolidated Balance Sheets.. (3) Restricted cash and equivalents balances are presented within other current assets in Virginia Power’s Consolidated Balance Sheets . Supplemental Cash Flow Information The following table provides supplemental disclosure of cash flow information related to Dominion Energy: Year Ended December 31, 2022 2021 2020 (millions) Cash paid during the year for: Interest and related charges, excluding capitalized amounts $ 1,408 $ 1,340 $ 1,519 Income taxes 139 160 292 Significant noncash investing and financing activities: (1)(2) Accrued capital expenditures 979 637 485 Leases (3) 144 96 173 (1) See Note 9 for noncash investing activities related to the acquisition of a noncontrolling interest in Wrangler and Dominion Privatization. (2) See Notes 18, 19, 20 and 23 for noncash financing activities related to the contribution of stock to Dominion Energy’s defined benefit pension plan, remarketing of Series A Preferred Stock, derivative restructuring and the issuance of common stock and transfer of property associated with the settlement of litigation. (3) Includes $ 34 million of finance leases and $ 110 million of operating leases entered in 2022, $ 47 million of finance leases and $ 49 million of operating leases entered in 2021 and $ 46 million of finance leases and $ 127 million of operating leases entered in 2020. The following table provides supplemental disclosure of cash flow information related to Virginia Power: Year Ended December 31, 2022 2021 2020 (millions) Cash paid (received) during the year for: Interest and related charges, excluding capitalized amounts $ 599 $ 501 $ 491 Income taxes ( 54 ) 109 452 Significant noncash investing activities: (1) Accrued capital expenditures 665 363 262 Leases (2) 116 79 32 (1) See Note 18 for non-cash financing activities related to derivative restructuring. (2) Includes $ 26 million of finance leases and $ 90 million of operating leases entered in 2022, $ 37 million of finance leases and $ 42 million of operating leases entered in 2021 and $ 32 million of finance leases entered in 2020. Distributions from Equity Method Investees Dominion Energy holds investments that are accounted for under the equity method of accounting and classifies distributions from equity method investees as either cash flows from operating activities or cash flows from investing activities in the Consolidated Statements of Cash Flows according to the nature of the distribution. Distributions received are classified on the basis of the nature of the activity of the investee that generated the distribution as either a return on investment (classified as cash flows from operating activities) or a return of an investment (classified as cash flows from investing activities) when such information is available to Dominion Energy. Fair Value Measurements Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability (exit price) in an orderly transaction between market participants at the measurement date. However, the use of a mid-market pricing convention (the mid-point between bid and ask prices) is permitted. Fair values are based on assumptions that market participants would use when pricing an asset or liability, including assumptions about risk and the risks inherent in valuation techniques and the inputs to valuations. This includes not only the credit standing of counterparties involved and the impact of credit enhancements but also the impact of the Companies’ own nonperformance risk on their liabilities. Fair value measurements assume that the transaction occurs in the principal market for the asset or liability (the market with the most volume and activity for the asset or liability from the perspective of the reporting entity), or in the absence of a principal market, the most advantageous market for the asset or liability (the market in which the reporting entity would be able to maximize the amount received or minimize the amount paid). Dominion Energy applies fair value measurements to certain assets and liabilities including commodity, interest rate and/or foreign currency exchange rate derivative instruments, and other investments including those held in nuclear decommissioning, rabbi, and pension and other postretirement benefit plan trusts, in accordance with the requirements discussed above. Virginia Power applies fair value measurements to certain assets and liabilities including commodity, interest rate and/or foreign currency exchange rate derivative instruments and other investments including those held in the nuclear decommissioning trust, in accordance with the requirements discussed above. The Companies apply credit adjustments to their derivative fair values in accordance with the requirements described above. Inputs and Assumptions Fair value is based on actively-quoted market prices, if available. In the absence of actively-quoted market prices, price information is sought from external sources, including industry publications, and to a lesser extent, broker quotes. When evaluating pricing information provided by Designated Contract Market settlement pricing, other pricing services, or brokers, the Companies consider the ability to transact at the quoted price, i.e. if the quotes are based on an active market or an inactive market and to the extent which pricing models are used, if pricing is not readily available. If pricing information from external sources is not available, or if the Companies believe that observable pricing is not indicative of fair value, judgment is required to develop the estimates of fair value. In those cases the unobservable inputs are developed and substantiated using historical information, available market data, third-party data and statistical analysis. Periodically, inputs to valuation models are reviewed and revised as needed, based on historical information, updated market data, market liquidity and relationships and changes in third-party sources. For options and contracts with option-like characteristics where observable pricing information is not available from external sources, the Companies generally use a modified Black-Scholes Model that considers time value, the volatility of the underlying commodities and other relevant assumptions when estimating fair value. The Companies use other option models under special circumstances, including but not limited to Spread Approximation Model and a Swing Option Model. For contracts with unique characteristics, the Companies may estimate fair value using a discounted cash flow approach deemed appropriate in the circumstances and applied consistently from period to period. For individual contracts, the use of different valuation models or assumptions could have a significant effect on the contract’s estimated fair value. The inputs and assumptions used in measuring fair value include the following: Derivative Contracts Inputs and assumptions Commodity Interest Rate Foreign Currency Exchange Rate Investments Forward commodity prices X Transaction prices X Price volatility X Price correlation X Volumes X Commodity location X Interest rate curves X Foreign currency forward exchange rates X Quoted securities prices and indices X Securities trading information including volume and restrictions X Maturity X Interest rates X X X Credit quality of counterparties and the Companies X X X X Credit enhancements X X Notional value X X Time value X X X Levels The Companies also utilize the following fair value hierarchy, which prioritizes the inputs to valuation techniques used to measure fair value into three broad levels: • Level 1—Quoted prices (unadjusted) in active markets for identical assets and liabilities that they have the ability to access at the measurement date. Instruments categorized in Level 1 primarily consist of financial instruments such as certain exchange-traded derivatives and exchange-listed equities, U.S. and international equity securities, mutual funds and certain Treasury securities held in nuclear decommissioning trust funds for the Companies and benefit plan trust funds and rabbi trust funds for Dominion Energy. • Level 2—Inputs other than quoted prices included within Level 1 that are either directly or indirectly observable for the asset or liability, including quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in inactive markets, inputs other than quoted prices that are observable for the asset or liability and inputs that are derived from observable market data by correlation or other means. Instruments categorized in Level 2 primarily include commodity forwards and swaps, interest rate swaps, foreign currency exchange rate instruments and cash and cash equivalents, corporate debt instruments, government securities and other fixed income investments held in nuclear decommissioning trust funds for the Companies and benefit plan trust funds and rabbi trust funds for Dominion Energy. • Level 3—Unobservable inputs for the asset or liability, including situations where there is little, if any, market activity for the asset or liability. Instruments categorized in Level 3 for the Companies consist of long-dated commodity derivatives, FTRs, certain natural gas options and other modeled commodity derivatives. The fair value hierarchy gives the highest priority to quoted prices in active markets (Level 1) and the lowest priority to unobservable data (Level 3). In some cases, the inputs used to measure fair value might fall in different levels of the fair value hierarchy. In these cases, the lowest level input that is significant to a fair value measurement in its entirety determines the applicable level in the fair value hierarchy. Assessing the significance of a particular input to the fair value measurement in its entirety requires judgment, considering factors specific to the asset or liability. Alternative investments, consisting of investments in partnerships, joint ventures and other alternative investments held in nuclear decommissioning and benefit plan trust funds, are generally valued using NAV based on the proportionate share of the fair value as determined by reference to the most recent audited fair value financial statements or fair value statements provided by the investment manager adjusted for any significant events occurring between the investment manager’s and the Companies’ measurement date. Alternative investments recorded at NAV are not classified in the fair value hierarchy. Transfers out of Level 3 represent assets and liabilities that were previously classified as Level 3 for which the inputs became observable for classification in either Level 1 or Level 2. Because the activity and liquidity of commodity markets vary substantially between regions and time periods, the availability of observable inputs for substantially the full term and value of the Companies’ over-the-counter derivative contracts is subject to change. Derivative Instruments The Companies are exposed to the impact of market fluctuations in the price of electricity, natural gas and other energy-related products they market and purchase, as well as interest rate and foreign currency exchange rate risks in their business operations. The Companies use derivative instruments such as physical and financial forwards, futures, swaps, options, foreign currency transactions and FTRs to manage the commodity, interest rate and/or foreign currency exchange rate risks of their business operations. Derivative assets and liabilities are presented gross on the Companies’ Consolidated Balance Sheets. Derivative contracts representing unrealized gain positions and purchased options are reported as derivative assets. Derivative contracts representing unrealized losses and options sold are reported as derivative liabilities. All derivatives, except those for which an exception applies, are required to be reported at fair value. One of the exceptions to fair value accounting, normal purchases and normal sales, may be elected when the contract satisfies certain criteria, including a requirement that physical delivery of the underlying commodity is probable. Expenses and revenues resulting from deliveries under normal purchase contracts and normal sales contracts, respectively, are included in earnings at the time

Acquisitions and Dispositions

Acquisitions and Dispositions	12 Months Ended
	Dec. 31, 2022
Text Block [Abstract]
Acquisitions and Dispositions	NOTE 3. ACQUISITIONS AND DISPOSITIONS Sales of Businesses Reflected as Discontinued Operations Business Review Dispositions (as discussed in Note 1) Sale of East Ohio In September 2023, Dominion Energy entered into an agreement with Enbridge for the East Ohio Transaction, which includes the sale of East Ohio and is valued at approximately $ 6.6 billion, consisting of a purchase price of approximately $ 4.3 billion in cash and approximately $ 2.3 billion of assumed indebtedness. The purchase price will be subject to customary post-closing adjustments, including adjustments for cash, indebtedness, net working capital, capital expenditures and net regulatory assets and liabilities. Closing of the East Ohio Transaction is not conditioned upon the closing of the PSNC or Questar Gas Transactions. The sale will be treated as a stock sale for tax purposes and is expected to close in 2024, subject to clearance or approval under or by the Hart-Scott-Rodino Act, CFIUS and FCC as well as other customary closing and regulatory conditions. In November 2023, the waiting period under the Hart-Scott-Rodino Act expired. Also in November 2023, Dominion Energy submitted its initial filing request for approval by CFIUS. In October 2023, as required under the sale agreement, Dominion Energy filed a notice with the Ohio Commission. The proposed internal reorganization in connection with the East Ohio Transaction is subject to approval by the Utah and Wyoming Commissions. Dominion Energy filed for such approvals in September 2023 and received approval from the Utah Commission in November 2023. Upon closing, Dominion Energy will retain the pension and other postretirement benefit plan assets and obligations, including related income tax and other deferred balances, associated with retiree participants in both East Ohio's union pension and other postretirement benefit plans and retiree participants of the sale entities in the Dominion Energy Pension Plan and the Dominion Energy Retiree Health and Welfare Plan. The East Ohio Transaction is subject to termination by either party if not completed by September 2024, subject to a potential three-month extension for receipt of regulatory approvals, with a termination fee of $ 155 million due to Dominion Energy under certain conditions. Based on the recorded balances at September 30, 2023, Dominion Energy expects to recognize a pre-tax gain of approximately $ 20 million ($ 20 million after-tax loss) upon closing, including the write-off of $ 1.5 billion of goodwill which is not deductible for tax purposes but excluding the effects of any closing adjustments. At the closing of the East Ohio Transaction, Dominion Energy and Enbridge will enter into a transition services agreement pursuant to which Dominion Energy will continue to provide certain services to support the ongoing operations of East Ohio for up to approximately two years. Enbridge has also agreed to provide certain services to Dominion Energy. Sale of PSNC In September 2023, Dominion Energy entered into an agreement with Enbridge for the PSNC Transaction, which includes the sale of PSNC and is valued at approximately $ 3.1 billion, consisting of a purchase price of approximately $ 2.2 billion in cash and approximately $ 1.0 billion of assumed indebtedness. The purchase price will be subject to customary post-closing adjustments, including adjustments for cash, indebtedness, net working capital, capital expenditures and net regulatory assets and liabilities. Closing of the PSNC Transaction is not conditioned upon the closing of the East Ohio or Questar Gas Transactions. The sale will be treated as a stock sale for tax purposes and is expected to close in 2024, subject to clearance or approval under or by the Hart-Scott-Rodino Act, CFIUS, FCC and North Carolina Commission as well as other customary closing and regulatory conditions. In November 2023, the waiting period under the Hart-Scott-Rodino Act expired. Also in November 2023, Dominion Energy submitted its initial filing request for approval by CFIUS. In October 2023, Dominion Energy filed for approval from the North Carolina Commission. The proposed internal reorganization in connection with the PSNC Transaction is subject to approval by the North Carolina Commission. Dominion Energy filed for such approval in September 2023. Upon closing, Dominion Energy will retain the entirety of the assets and obligations, including related income tax and other deferred balances, of the pension and other postretirement employee benefit plans associated with the operations included in the transaction and relating to services provided through closing. The PSNC Transaction is subject to termination by either party if not completed by September 2024, subject to a potential three-month extension for receipt of regulatory approvals, with a termination fee of $ 78 million due to Dominion Energy under certain conditions. Based on the recorded balances at September 30, 2023, Dominion Energy expects to recognize a pre-tax gain of approximately $ 130 million ($ 290 million after-tax loss) upon closing, including the write-off of $ 0.7 billion of goodwill which is not deductible for tax purposes but excluding the effects of any closing adjustments. At the closing of the PSNC Transaction, Dominion Energy and Enbridge will enter into a transition services agreement pursuant to which Dominion Energy will continue to provide certain services to support the ongoing operations of PSNC for up to approximately two years. Enbridge has also agreed to provide certain services to Dominion Energy. Sale of Questar Gas and Wexpro In September 2023, Dominion Energy entered into an agreement with Enbridge for the Questar Gas Transaction, which includes the sale of Questar Gas, Wexpro and related affiliates and is valued at approximately $ 4.3 billion, consisting of a purchase price of approximately $ 3.0 billion in cash and approximately $ 1.3 billion of assumed indebtedness. The purchase price will be subject to customary post-closing adjustments, including adjustments for cash, indebtedness, net working capital, capital expenditures and net regulatory assets and liabilities. Closing of the Questar Gas Transaction is not conditioned upon the closing of the East Ohio or PSNC Transactions. The sale will be treated as a stock sale for tax purposes and is expected to close in 2024, subject to clearance or approval under or by the Hart-Scott-Rodino Act, CFIUS, FCC and Utah and Wyoming Commissions as well as other customary closing and regulatory conditions. In November 2023, the waiting period under the Hart-Scott-Rodino Act expired. Also in November 2023, Dominion Energy submitted its initial filing request for approval by CFIUS. In October 2023, Dominion Energy filed for approvals from the Utah and Wyoming Commissions. In October 2023, Dominion Energy filed the notice with the Idaho Commission required for closing of the Questar Gas Transaction. The proposed internal reorganization in connection with the Questar Gas Transaction is subject to approval by the Utah and Wyoming Commissions. Dominion Energy filed for such approvals in September 2023 and received approval from the Utah Commission in November 2023. Upon closing, Dominion Energy will retain the pension and other postretirement benefit plan assets and obligations, including related income tax and other deferred balances, associated with retiree participants of the sale entities in the Dominion Energy Pension Plan and the Dominion Energy Retiree Health and Welfare Plan. The Questar Gas Transaction is subject to termination by either party if not completed by September 2024, subject to a potential three-month extension for receipt of regulatory approvals, with a termination fee of $ 107 million due to Dominion Energy under certain conditions. Based on the recorded balances at September 30, 2023, Dominion Energy expects to recognize a pre-tax loss of approximately $ 10 million ($ 530 million after-tax loss) upon closing, including the write-off of $ 1.0 billion of goodwill which is not deductible for tax purposes but excluding the effects of any closing adjustments. At the closing of the Questar Gas Transaction, Dominion Energy and Enbridge will enter into a transition services agreement pursuant to which Dominion Energy will continue to provide certain services to support the ongoing operations of Questar Gas and Wexpro for up to approximately two years. Enbridge has also agreed to provide certain services to Dominion Energy. Other Sales In August 2023, Dominion Energy entered into an agreement and completed the sale of Tredegar Solar Fund I, LLC to Spruce Power for cash consideration of $ 21 million. Disposition of Gas Transmission & Storage Operations In July 2020, Dominion Energy entered into an agreement with BHE with a total value of approximately $ 10 billion, comprised of approximately $ 4.0 billion of cash consideration (subject to customary closing adjustments) plus the assumption of long-term debt, to sell substantially all of its gas transmission and storage operations, including processing assets, as well as noncontrolling partnership interests in Iroquois, JAX LNG and White River Hub and a controlling interest in Cove Point (consisting of 100 % of the general partner interest and 25 % of the total limited partner interests). The agreement provides that Dominion Energy retains the assets and obligations of the pension and other postretirement employee benefit plans associated with the operations included in the transaction and relating to services provided through closing. In October 2020, pursuant to a provision in the agreement with BHE, Dominion Energy elected to exclude the Q-Pipe Group and certain other affiliated entities from the transaction as approval under the Hart-Scott-Rodino Act had not been obtained by mid-September 2020. Concurrently in October 2020, Dominion Energy and BHE entered into a separate agreement under which Dominion Energy would sell the Q-Pipe Group and certain other affiliated entities to BHE for cash consideration of $ 1.3 billion and the assumption of related long-term debt. In November 2020, Dominion Energy completed the GT&S Transaction and received cash proceeds of $ 2.7 billion. This transaction was structured as an asset sale for tax purposes. Dominion Energy retained a 50 % noncontrolling interest in Cove Point that is accounted for as an equity method investment upon closing of the GT&S Transaction as Dominion Energy has the ability to exercise significant influence over, but not control, Cove Point. The retained 50% noncontrolling interest in Cove Point was recognized at its initial fair value of $ 2.8 billion on the date of close estimated using an income approach and a market approach. The valuation is considered a Level 3 fair value measurement due to the use of significant judgment and unobservable inputs, including projected timing and amount of future cash flows and a discount rate reflecting risks inherent in the future cash flows and market prices. Upon closing the GT&S Transaction, Dominion Energy recognized a gain of $ 127 million (net of a $ 1.4 billion write-off of goodwill and a $ 222 million closing adjustment paid to BHE in December 2020) and an associated tax expense of $ 336 million, presented in net income (loss) from discontinued operations including noncontrolling interest in Dominion Energy’s Consolidated Statements of Income. In connection with closing of the GT&S Transaction, Dominion Energy and BHE entered into a transition services agreement under which Dominion Energy will continue to provide specified administrative services to support the operations of the disposed business for up to 24 months after closing, subsequently extended through June 2023 for certain services. In addition, BHE provided certain administrative services to Dominion Energy through December 2022. Dominion Energy recorded $ 20 million, $ 21 million and $ 4 million associated with the transition services agreement in operating revenue in the Consolidated Statements of Income for the years ended December 31, 2022, 2021 and 2020, respectively. Also in November 2020, BHE provided a $ 1.3 billion deposit to Dominion Energy on the Q-Pipe Transaction. In July 2021, Dominion Energy and BHE mutually agreed to terminate the Q-Pipe Transaction as a result of uncertainty associated with receiving approval under the Hart-Scott-Rodino Act. Also in July 2021, Dominion Energy entered into an approximately $ 1.3 billion term loan credit agreement and borrowed the full amount available thereunder. The agreement matured in December 2021 and bore interest at a variable rate. The proceeds were utilized to repay the deposit received from BHE on the Q-Pipe Transaction. Upon completion of a sale of the Q-Pipe Group, Dominion Energy was required to utilize the net proceeds to repay any outstanding balances under the term loan agreement. In October 2021, Dominion Energy entered into an agreement with Southwest Gas to sell the Q-Pipe Group. The total value of this transaction was approximately $ 2 billion, comprised of approximately $ 1.5 billion of cash consideration (subject to customary closing adjustments) plus the assumption of long-term debt. The agreement provided that Dominion Energy retain the assets and obligations of the pension and other postretirement employee benefit plans associated with the operations included in the transaction and relating to services provided through closing. In December 2021, Dominion Energy completed the sale of the Q-Pipe Group and received cash proceeds of $ 1.5 billion. This transaction was structured as an asset sale for tax purposes. Upon closing, Dominion Energy recognized a gain of $ 666 million (net of a $ 191 million write-off of goodwill) and an associated tax expense of $ 173 million, presented in net income (loss) from discontinued operations including noncontrolling interest in Dominion Energy’s Consolidated Statements of Income. Also in December 2021, Dominion Energy used the net proceeds from the sale to repay all outstanding balances under the July 2021 term loan agreement and terminated the term loan agreement. In 2022, Dominion Energy recognized a gain of $ 27 million ($ 20 million after-tax) in discontinued operations in its Consolidated Statements of Income associated with the finalization of working capital adjustments. In connection with the closing of the sale of the Q-Pipe Group, Dominion Energy and Southwest Gas entered into a transition services agreement under which Dominion Energy will continue to provide specified administrative services to support the operations of the disposed businesses for up to 12 months after closing, subsequently extended through July 2023 for certain services. Dominion Energy recorded $6 million associated with the transition services agreement in operating revenue in the Consolidated Statements of Income for the year ended December 31, 2022. The operations included in both the GT&S Transaction and the Q-Pipe Group are presented in discontinued operations effective July 2020. As a result, depreciation and amortization ceased on the applicable assets. As Cove Point had previously been consolidated within Dominion Energy’s financial statements, balances associated with Cove Point prior to the closing of the GT&S Transaction are presented within discontinued operations. See Note 9 for additional information regarding Dominion Energy’s equity method investment in Cove Point. Financial Statement Information for Dispositions Presented as Discontinued Operations The following table represents selected information regarding the results of operations, which were reported within discontinued operations in Dominion Energy’s Consolidated Statements of Income: Business Review Dispositions Year Ended December 31, 2022 East Ohio Transaction PSNC Transaction Questar Gas Transaction Other (millions) Operating revenue $ 1,043 $ 841 $ 1,341 $ 5 Operating expense 702 648 1,043 5 Other income (expense) 28 9 — — Interest and related charges 36 43 45 — Income before income taxes 333 159 253 — Income tax expense 45 34 50 — Net income attributable to Dominion Energy (1) $ 288 $ 125 $ 203 $ — (1) Excludes $( 3 ) million of income tax expense (benefit) attributable to consolidated state and interim period tax allocation adjustments for the year ended December 31, 2022. Disposition of Gas Transportation & Storage Operations Business Review Dispositions Year Ended December 31, 2021 Q-Pipe Group (1) East Ohio Transaction PSNC Transaction Questar Gas Transaction Other (millions) Operating revenue $ 254 $ 908 $ 613 $ 1,020 $ 4 Operating expense 76 620 451 761 5 Other income (expense) (2) 28 25 11 ( 1 ) — Interest and related charges 25 18 35 35 — Income (loss) before income taxes 181 295 138 223 ( 1 ) Income tax expense (benefit) 36 38 27 42 — Net income (loss) attributable to Dominion Energy (3) $ 145 $ 257 $ 111 $ 181 $ ( 1 ) (1) Operations associated with the Q-Pipe Group are through the December 31, 2021 closing date. (2) Q-Pipe Group includes a $ 25 million benefit associated with the termination of the Q-Pipe Transaction in 2021. (3) Excludes $ 19 million of income tax expense (benefit) attributable to consolidated state and interim period tax allocation adjustments for the year ended December 31, 2021. Disposition of Gas Transportation & Storage Operations Business Review Dispositions Year Ended December 31, 2020 GT&S Transaction (1) Q-Pipe Group East Ohio Transaction PSNC Transaction Questar Gas Transaction (millions) Operating revenue $ 1,710 $ 246 $ 771 $ 539 $ 938 Operating expense (2) 1,289 96 540 376 676 Other income (expense) 88 1 20 12 ( 2 ) Interest and related charges (benefit) (3) 372 20 ( 32 ) 38 32 Income before income taxes 137 131 283 137 228 Income tax expense (benefit) (4) 334 ( 9 ) 35 30 45 Net income (loss) including noncontrolling interests ( 197 ) 140 248 107 183 Noncontrolling interests 106 — — — — Net income (loss) attributable to Dominion Energy (5) $ ( 303 ) $ 140 $ 248 $ 107 $ 183 (1) Operations associated with the GT&S Transaction are through the November 1, 2020 close date. (2) GT&S Transaction includes a charge of $ 482 million ($ 359 million after-tax) recorded in 2020 associated with the probable abandonment of a significant portion of the Supply Header Project as well as the establishment of a $ 75 million ARO as a result of the cancellation of the Atlantic Coast Pipeline Project. (3) GT&S Transaction includes a loss of $ 237 million ($ 178 million after-tax) recorded in 2020 associated with cash flow hedges of debt-related items that were determined to be probable of not occurring. (4) Excludes $ 17 million income tax benefit recorded in 2021 associated with the GT&S Transaction. (5) Excludes $ 24 million of income tax expense (benefit) attributable to consolidated state and interim period tax allocation adjustments for the year ended December 31, 2020. The carrying value of major classes of assets and liabilities relating to the disposal groups, which are reported as held for sale in Dominion Energy's Consolidated Balance Sheets were as follows: At December 31, 2022 At December 31, 2021 Business Review Dispositions Business Review Dispositions East PSNC Transaction Questar Other East PSNC Transaction Questar Other (millions) Current assets (1) $ 544 $ 381 $ 803 $ 1 $ 439 $ 296 $ 422 $ 1 Property, plant and equipment, net 5,012 2,591 3,984 47 4,636 2,506 3,677 52 Other deferred charges and other (2) and 2,629 822 1,043 — 2,563 823 1,101 — Current liabilities (3) 634 151 612 1 557 133 263 1 Long-term debt (4) 2,287 798 1,245 — 1,786 798 995 — Other deferred credits and (5) 1,435 689 1,087 9 1,408 673 1,039 14 (1) Includes cash and cash equivalents of $ 6 million and $ 3 million within the East Ohio Transaction, less than $ 1 million and $ 14 million within the PSNC Transaction and $ 28 million and $ 17 million within the Questar Gas Transaction at December 31, 2022 and 2021, respectively. Also includes regulatory assets of $ 90 million and $ 56 million within the East Ohio Transaction, $ 95 million and $ 88 million within the PSNC Transaction and $ 273 million and $ 125 million within the Questar Gas Transaction at December 31, 2022 and 2021, respectively (2) Includes goodwill of $ 1.5 billion, $ 673 million and $ 983 million at both December 31, 2022 and 2021 within the East Ohio, PSNC and Questar Gas Transactions, respectively. Also includes regulatory assets of $ 751 million and $ 607 million within the East Ohio Transaction, $ 93 million and $ 103 million within the PSNC Transaction and $( 22 ) million and $ 47 million within the Questar Gas Transaction at December 31, 2022 and 2021, respectively. (3) Includes regulatory liabilities of $ 43 million and $ 51 million within the East Ohio Transaction, $ 11 million and $ 18 million within the PSNC Transaction and $ 144 million and $ 28 million within the Questar Gas Transaction at December 31, 2022 and 2021, respectively. (4) Includes East Ohio Unsecured Senior Notes due 2025 to 2052 at rates from 1.30 % to 6.38 % and with a weighted-average coupon rate for debt outstanding at December 31, 2022 of 3.13 %; PSNC Unsecured Senior Notes due 2026 to 2051 at rates from 3.10 % to 7.45 % and with a weighted-average coupon rate for debt outstanding at December 31, 2022 of 4.34 % and Questar Gas Unsecured Senior Notes due 2024 to 2052 at rates from 2.21 % to 7.20 % and with a weighted-average coupon rate for debt outstanding at December 31, 2022 of 3.99 %. (5) Includes regulatory liabilities of $ 749 million and $ 754 million within the East Ohio Transaction, $ 436 million and $ 435 million within the PSNC Transaction and $ 506 million and $ 500 million within the Questar Gas Transaction at December 31, 2022 and 2021, respectively. Capital expenditures and significant noncash items relating to the disposal groups included the following: Business Review Dispositions Year Ended December 31, 2022 East Ohio Transaction PSNC Transaction Questar Gas Transaction Other (millions) Capital expenditures $ 456 $ 153 $ 438 $ — Significant noncash items Depreciation, depletion and amortization 134 87 163 4 Accrued capital expenditures 53 16 31 — Disposition of Gas Transportation & Storage Operations Business Review Dispositions Year Ended December 31, 2021 Q-Pipe Group (1) East Ohio Transaction PSNC Transaction Questar Gas Transaction Other (millions) Capital expenditures (2) $ 34 $ 420 $ 195 $ 416 $ — Significant noncash items Depreciation, depletion and amortization — 122 81 168 4 Accrued capital expenditures — 27 41 25 — (1) Operations associated with the Q-Pipe Group are through the December 31, 2021 closing date. (2) In November 2021, Wexpro closed on an agreement with a natural gas gathering systems operator to purchase an existing natural gas gathering system in Wyoming including pipelines, compressors and dehydration equipment for total consideration of $ 41 million, included in the Questar Gas Transaction. Disposition of Gas Transportation & Storage Operations Business Review Dispositions Year Ended December 31, 2020 GT&S Transaction (1) Q-Pipe Group East Ohio Transaction PSNC Transaction Questar Gas Transaction Other (millions) Capital expenditures $ 292 $ 38 $ 393 $ 259 $ 377 $ — Significant noncash items Impairment of assets and other charges 469 — — — — — Depreciation, depletion and amortization 177 27 91 73 175 4 Accrued capital expenditures — 1 19 19 21 — (1) Operations associated with the GT&S Transaction are through the November 1, 2020 closing date. In October 2020, Dominion Energy settled various derivatives related to, but not included in, the GT&S Transaction for a payment of $ 165 million. Sale of Hope In February 2022, Dominion Energy entered into an agreement to sell 100 % of the equity interests in Hope to Ullico for $ 690 million of cash consideration, subject to customary closing adjustments, which closed in August 2022 after all customary closing and regulatory conditions were satisfied, including clearance under the Hart-Scott-Rodino Act and approval from the West Virginia Commission. The sale was treated as a stock sale for tax purposes. In connection with closing, Dominion Energy recognized a pre-tax gain of $ 14 million, inclusive of customary closing adjustments, (net of $ 110 million write-off of goodwill which was not deductible for tax purposes) in losses (gains) on sales of assets in its Consolidated Statements of Income. The transaction resulted in an after-tax loss of $ 84 million. Upon meeting the classification as held for sale in the first quarter of 2022 and through the second quarter of 2022, Dominion Energy had recorded charges of $ 90 million in deferred income tax expense in its Consolidated Statements of Income to reflect the recognition of deferred taxes on the outside basis of Hope’s stock. This deferred income tax expense reversed upon closing of the sale and became a component of current income tax expense on the sale disclosed above. See Note 5 for additional information. In addition, a curtailment was recorded related to other postretirement benefit plans as discussed in Note 22. All activity related to Hope is, effective September 2023, reflected in the Corporate and Other segment. Sale of Kewaunee In May 2021, Dominion Energy entered into an agreement to sell 100 % of the equity interests in Dominion Energy Kewaunee, Inc. to EnergySolutions, including the transfer of all decommissioning obligations associated with Kewaunee, which ceased operations in 2013. The sale closed in June 2022 following approval from the Wisconsin Commission in May 2022 and NRC approval of a requested license transfer in March 2022. The sale was treated as an asset sale for tax purposes and Dominion Energy retained the assets and obligations of the pension and other postretirement employee benefit plans. EnergySolutions is subject to the Wisconsin regulatory conditions agreed to by Dominion Energy upon its acquisition of Kewaunee, including the return of any excess decommissioning funds to WPSC and WP&L customers following completion of all decommissioning activities. In the second quarter of 2022, Dominion Energy recorded a loss of $ 649 million ($ 513 million after-tax), recorded in losses (gains) on sales of assets in its Consolidated Statements of Income, primarily related to the difference between the nuclear decommissioning trust and AROs. Prior to its receipt, there had been uncertainty as to the timing of or ability to obtain approval from the Wisconsin Commission. Prior to closing, Dominion Energy withdrew $ 80 million from the nuclear decommissioning trust to recover certain spent nuclear fuel and other permitted costs. All activity related to Kewaunee prior to closing is included in Contracted Energy, with remaining activity reflected in the Corporate and Other segment. Acquisition of Birdseye In May 2021, Dominion Energy acquired 100 % of the ownership interest in Birdseye from BRE Holdings, LLC for total consideration of $ 46 million, consisting of $ 28 million in cash and $ 18 million, measured at fair value at closing, of consideration contingent on the achievement of certain revenue targets and future development project sales. Birdseye is primarily engaged in the development of solar energy projects in southeastern states in the U.S. with 2.5 GW of solar generation projects under development at acquisition. The allocation of the purchase price resulted in $ 25 million of development project assets, primarily reflected in other deferred charges and other assets in Dominion Energy’s Consolidated Balance Sheets, and $ 24 million of goodwill, which is not deductible for tax purposes. The goodwill reflects the value associated with enhancing Dominion Energy's development of regulated and long-term contracted solar generating and electric storage projects. The fair value measurements, including of the assets acquired, were determined using the income approach and are considered Level 3 fair value measurements due to the use of significant judgmental and unobservable inputs, including projected timing and amount of future cash flows. Birdseye is included in Contracted Energy.

Operating Revenue

Operating Revenue	12 Months Ended
	Dec. 31, 2022
Text Block [Abstract]
Operating Revenue	NOTE 4. OPERATING REVENUE The Companies’ operating revenue consists of the following: Dominion Energy Virginia Power Year Ended December 31, 2022 2021 2020 2022 2021 2020 (millions) Regulated electric sales: Residential $ 5,261 $ 4,509 $ 4,833 $ 4,039 $ 3,366 $ 3,677 Commercial 4,480 3,194 3,102 3,647 2,417 2,342 Industrial 901 748 730 472 367 380 Government and other retail 1,235 921 868 1,172 862 804 Wholesale 234 175 128 132 107 90 Nonregulated electric sales 1,249 1,005 822 68 44 19 Regulated gas sales: Residential 331 322 271 Commercial 188 160 129 Other 168 108 68 Regulated gas transportation and storage 38 35 23 Other regulated revenues 296 248 303 277 234 299 Other nonregulated revenues (1)(2) 178 237 274 61 73 50 Total operating revenue from 14,559 11,662 11,551 9,868 7,470 7,661 Other revenues (1)(3) ( 614 ) ( 242 ) 368 ( 214 ) — 102 Total operating revenue $ 13,945 $ 11,420 $ 11,919 $ 9,654 $ 7,470 $ 7,763 (1) See Note 25 for amounts attributable to related parties and affiliates. (2) Includes sales of renewable energy credits were $ 42 million, $ 33 million and $ 20 million for the years ended December 31, 2022, 2021 and 2020, respectively, at Dominion Energy and $ 18 million, $ 21 million and $ 11 million for the years ended December 31, 2022, 2021 and 2020, respectively, at Virginia Power. (3) Includes alternative revenue of $ 72 million, $ 44 million and $ 84 million at both Dominion Energy and Virginia Power for years ended December 31, 2022, 2021 and 2020, respectively. Neither Dominion Energy nor Virginia Power have any amounts for revenue to be recognized in the future on multi-year contracts in place at December 31, 2022. Contract liabilities represent an entity’s obligation to transfer goods or services to a customer for which the entity has received consideration, or the amount that is due, from the customer. At December 31, 2022 and 2021, Dominion Energy’s contract liability balances were $ 51 million and $ 47 million, respectively. At December 31, 2022 and 2021, Virginia Power’s contract liability balances were $ 39 million and $ 33 million, respectively. The Companies’ contract liabilities are recorded in other current liabilities and other deferred credits and other liabilities in the Consolidated Balance Sheets. The Companies recognize revenue as they fulfill their obligations to provide service to their customers. During the years ended December 31, 2022 and 2021, Dominion Energy recognized revenue of $ 42 million and $ 50 million from the beginning contract liability balance. During the years ended December 31, 2022 and 2021, Virginia Power recognized revenue of $ 33 million and $ 36 million, respectively, from the beginning contract liability balance.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Income Taxes	NOTE 5. INCOME TAXES Judgment and the use of estimates are required in developing the provision for income taxes and reporting of tax-related assets and liabilities. The interpretation of tax laws and associated regulations involves uncertainty, since tax authorities may interpret the laws differently. The Companies are routinely audited by federal and state tax authorities. Ultimate resolution of income tax matters may result in favorable or unfavorable impacts to net income and cash flows, and adjustments to tax-related assets and liabilities could be material. In August 2022, the IRA was enacted which, among other things, extends the investment and production tax credits for clean energy technologies until at least 2032 and imposes a 15 % alternative minimum tax on GAAP net income, as adjusted for certain items, of corporations greater than $ 1 billion for tax years beginning after December 31, 2022. The IRA did not impact the measurement of the Companies’ deferred income taxes or change the assessment of the realizability of deferred tax assets. The Companies continue to monitor and evaluate the impacts of the IRA, including changes in interpretations, if any, as guidance is issued and finalized. In July 2020, the U.S. Department of Treasury issued final regulations providing guidance about the limitation on the deduction for business interest expenses under the 2017 Tax Reform Act. Under the 2017 Tax Reform Act, deductions for net interest expense are limited to 30 % of adjusted taxable income, which prior to 2022, was defined similarly to EBITDA (earnings before interest, taxes, depreciation and amortization). For tax years beginning after December 31, 2021, the calculation of adjusted taxable income is defined similarly to EBIT (earnings before interest and taxes). For consolidated groups such as Dominion Energy that have both regulated and nonregulated operations, these rules may result in a temporary disallowance of a portion of Dominion Energy’s interest deductions in the future, although any interest disallowed has an indefinite carryforward period. As indicated in Note 2, certain of the Companies’ operations, including accounting for income taxes, are subject to regulatory accounting treatment. For regulated operations, many of the changes in deferred taxes from the 2017 Tax Reform Act represent amounts probable of collection from or return to customers and were recorded as either an increase to a regulatory asset or liability. Continuing Operations Details of income tax expense for continuing operations including noncontrolling interests were as follows: Dominion Energy Virginia Power Year Ended December 31, 2022 2021 2020 2022 2021 2020 (millions) Current: Federal $ ( 76 ) $ ( 301 ) $ ( 388 ) $ 17 $ 67 $ 364 State 27 13 ( 91 ) ( 17 ) ( 13 ) 71 Total current expense (benefit) ( 49 ) ( 288 ) ( 479 ) — 54 435 Deferred: Federal Taxes before operating loss ( 63 ) 144 ( 16 ) 212 145 ( 226 ) Tax utilization expense of operating 35 42 42 — — — Investment tax credits ( 129 ) 250 311 ( 148 ) ( 39 ) ( 27 ) State 44 ( 26 ) 44 112 118 7 Total deferred expense (benefit) ( 113 ) 410 381 176 224 ( 246 ) Investment tax credit-gross deferral 18 121 42 18 121 42 Investment tax credit-amortization ( 4 ) ( 4 ) ( 3 ) ( 3 ) ( 2 ) ( 2 ) Total income tax expense (benefit) $ ( 148 ) $ 239 $ ( 59 ) $ 191 $ 397 $ 229 In 2022, Dominion Energy’s current income taxes reflect a benefit from continuing operations as the income tax expense associated with the East Ohio, PSNC and Questar Gas Transactions and Cove Point operations is reflected in discontinued operations. In 2021, Dominion Energy’s current income taxes reflect a benefit from continuing operations as the income tax expense associated with the East Ohio, PSNC and Questar Gas Transactions, Cove Point and Q-Pipe Group’s operations, including taxes on the gain, is reflected in discontinued operations. Dominion Energy’s income tax expense reflects the utilization of investment tax credit carryforwards to offset a portion of the federal tax gain on the sale. In 2020, Dominion Energy’s current income taxes reflect a benefit from continuing operations as the income tax expense associated with the East Ohio, PSNC and Questar Gas Transactions, Cove Point and gas transmission and storage operations, including taxes on the gain, is reflected in discontinued operations. Dominion Energy’s income tax expense reflects the utilization of investment tax credit carryforwards to offset a portion of the federal tax gain on the sale. In addition, an $ 18 million income tax benefit is reflected in common shareholders’ equity associated with state deferred taxes on assets and liabilities retained in connection with the GT&S Transaction. Discontinued Operations Income tax expense (benefit) reflected in discontinued operations is $ 225 million, $ 374 million, and $( 61 ) million for the years ended December 31, 2022, 2021 and 2020, respectively. Income taxes reflect tax expense on pre-tax income attributable to East Ohio, PSNC, Questar Gas, Wexpro and equity method earnings from Cove Point of $ 257 million, $ 218 million and $ 175 million, partially offset by an income tax benefit of $ 38 million, $ 37 million and $ 34 million related to excess deferred income tax amortization for the years ended December 31, 2022, 2021 and 2020, respectively. 2021 income tax expense also includes a $ 14 million benefit related to finalizing income tax returns on the GT&S Transaction and the absence of a $ 36 million benefit on non-deductible goodwill written off in connection with the sale of the Q-Pipe Group. The 2020 income tax expense also reflects a charge of $ 81 million for the write-off of tax-related regulatory assets associated with the Atlantic Coast Pipeline Project and the absence of a $ 236 million benefit on non-deductible goodwill written off in connection with the GT&S Transaction. Continuing Operations For continuing operations including noncontrolling interests, the statutory U.S. federal income tax rate reconciles to the Companies’ effective income tax rate as follows: Dominion Energy Virginia Power Year Ended December 31, 2022 2021 2020 2022 2021 2020 U.S. statutory rate 21.0 % 21.0 % 21.0 % 21.0 % 21.0 % 21.0 % Increases (reductions) resulting from: Recognition of taxes - sale of ( 74.7 ) — — Recognition of taxes - privatization — — — 2.4 — — State taxes, net of federal benefit ( 28.3 ) 1.8 ( 0.4 ) 4.6 4.6 4.8 Investment tax credits 108.9 ( 4.5 ) ( 18.6 ) ( 9.1 ) ( 3.0 ) ( 4.5 ) Production tax credits 12.0 ( 0.6 ) ( 1.3 ) ( 1.0 ) ( 0.6 ) ( 0.7 ) Valuation allowances — 0.2 1.7 — — — Reversal of excess deferred income 67.3 ( 2.8 ) ( 5.9 ) ( 3.8 ) ( 2.1 ) ( 2.2 ) State legislative change 0.3 ( 1.0 ) — — ( 0.7 ) — Change in tax status — — ( 3.3 ) — — — AFUDC—equity 5.0 ( 0.5 ) ( 0.1 ) ( 0.4 ) ( 0.5 ) — Changes in state deferred taxes ( 4.1 ) — ( 6.3 ) Absence of tax on noncontrolling — ( 0.2 ) 7.4 Settlements of uncertain tax positions — ( 1.7 ) — — — — Employee stock ownership plan 6.8 ( 0.4 ) ( 1.7 ) Other, net 5.7 ( 0.4 ) ( 0.7 ) ( 0.1 ) 0.1 ( 0.1 ) Effective tax rate 119.9 % 10.9 % ( 8.2 ) % 13.6 % 18.8 % 18.3 % As described in Note 3, Dominion Energy sold 100 % of the equity interests in Hope in a stock sale for income tax purposes. Dominion Energy’s 2022 effective tax rate reflects the current income tax expense on the sale of Hope’s stock. As described in Note 9, Virginia Power transferred its existing privatization operations in Virginia to Dominion Energy, and Dominion Energy contributed these assets to Dominion Privatization. As the original owner of these privatization assets, Virginia Power is required to recognize the income tax expense on Dominion Energy’s transaction with Dominion Privatization. As such, Virginia Power’s effective tax rate reflects an income tax expense of $ 34 million on this transaction. In December 2021, unrecognized tax benefits related to several state uncertain tax positions acquired in the SCANA Combination were effectively settled through negotiations with the taxing authority. Management believed it was reasonably possible these unrecognized tax benefits could decrease through settlement negotiations or payments during 2021, however no income tax benefits could be recognized unless or until the positions were effectively settled. Resolution of these uncertain tax positions decreased income tax expense by $ 38 million. In addition, the Companies’ effective tax rates reflect the benefit of a state legislative change enacted in April 2021 for tax years beginning January 1, 2022. Dominion Energy’s effective tax rate reflects a $ 21 million deferred tax benefit, inclusive of a $ 16 million deferred tax benefit at Virginia Power. Dominion Energy’s 2020 effective tax rate reflects an income tax benefit of $ 45 million associated with the remeasurement of consolidated state deferred taxes with the classification of gas transmission and storage operations as held for sale. In addition, Dominion Energy’s effective tax rate reflects an income tax expense of $ 55 million attributable to the noncontrolling interest primarily associated with the impairment of non-wholly-owned nonregulated solar facilities held in partnerships discussed in Note 10. The Companies’ deferred income taxes consist of the following: Dominion Energy Virginia Power At December 31, 2022 2021 2022 2021 (millions) Deferred income taxes: Total deferred income tax assets $ 2,633 $ 2,782 $ 1,535 $ 1,373 Total deferred income tax liabilities 7,730 7,961 4,701 4,286 Total net deferred income tax liabilities $ 5,097 $ 5,179 $ 3,166 $ 2,913 Total deferred income taxes: Plant and equipment, primarily depreciation method and basis differences $ 4,257 $ 4,773 $ 3,355 $ 3,327 Excess deferred income taxes ( 847 ) ( 884 ) ( 616 ) ( 629 ) Unrecovered NND Project costs 479 508 DESC rate refund ( 89 ) ( 113 ) Toshiba Settlement ( 162 ) ( 189 ) Nuclear decommissioning 1,001 1,114 311 324 Deferred state income taxes 803 777 566 420 Federal benefit of deferred state income taxes ( 164 ) ( 163 ) ( 119 ) ( 88 ) Deferred fuel, purchased energy and gas costs 509 154 403 126 Pension benefits 330 282 ( 105 ) ( 119 ) Other postretirement benefits 58 68 111 93 Loss and credit carryforwards ( 1,782 ) ( 1,566 ) ( 751 ) ( 537 ) Valuation allowances 137 138 7 6 Partnership basis differences 466 390 Other 101 ( 109 ) 4 ( 10 ) Total net deferred income tax liabilities $ 5,097 $ 5,180 $ 3,166 $ 2,913 Deferred Investment Tax Credits – Regulated Operations 300 286 286 270 Total Deferred Taxes and Deferred Investment Tax Credits $ 5,397 $ 5,466 $ 3,452 $ 3,183 At December 31, 2022, Dominion Energy had the following deductible loss and credit carryforwards: Deductible Deferred Valuation Expiration Amount Tax Asset Allowance Period (millions) Federal losses $ 778 $ 163 $ — 2037 Federal investment credits — 874 — 2036 - 2042 Federal production and other credits — 82 — 2036 - 2042 State losses 5,665 305 ( 51 ) 2023 - 2042 State minimum tax credits — 271 — No expiration State investment and other credits — 127 ( 86 ) 2023 - 2032 Total $ 6,443 $ 1,822 $ ( 137 ) At December 31, 2022, Virginia Power had the following deductible loss and credit carryforwards: Deductible Deferred Valuation Expiration Amount Tax Asset Allowance Period (millions) Federal losses $ — $ — $ — Federal investment credits — 631 — 2036 - 2042 Federal production and other credits — 80 — 2036 - 2042 State losses 513 31 — 2042 State investment and other credits — 9 ( 7 ) 2024 Total $ 513 $ 751 $ ( 7 ) A reconciliation of changes in Dominion Energy’s unrecognized tax benefits follows. Virginia Power does no t have any unrecognized tax benefits in the periods presented: Dominion Energy 2022 2021 2020 (millions) Beginning balance $ 128 $ 167 $ 175 Increases-prior period positions 8 48 18 Decreases-prior period positions ( 8 ) ( 59 ) ( 19 ) Increases-current period positions 2 2 1 Settlements with tax authorities ( 3 ) ( 26 ) — Expiration of statutes of limitations ( 10 ) ( 4 ) ( 8 ) Ending balance $ 117 $ 128 $ 167 Certain unrecognized tax benefits, or portions thereof, if recognized, would affect the effective tax rate. Changes in these unrecognized tax benefits may result from remeasurement of amounts expected to be realized, settlements with tax authorities and expiration of statutes of limitations. For Dominion Energy and its subsidiaries, these unrecognized tax benefits were $ 64 million, $ 72 million and $ 140 million at December 31, 2022, 2021 and 2020, respectively. In discontinued operations, these unrecognized tax benefits were $ 33 million at both December 31, 2022 and 2021. For Dominion Energy, the change in these unrecognized tax benefits decreased income tax expense by $ 7 million, $ 34 million and $ 6 million in 2022, 2021 and 2020, respectively. For discontinued operations, the change in these unrecognized tax benefits increased income tax expense by $ 5 million in 2020. Dominion Energy participates in the IRS Compliance Assurance Process which provides the opportunity to resolve complex tax matters with the IRS before filing its federal income tax returns, thus achieving certainty for such tax return filing positions agreed to by the IRS. The IRS has completed its audit of tax years through 2019. The statute of limitations has not yet expired for years after 2018. Although Dominion Energy has not received a final letter indicating no changes to its taxable income for tax years 2021 and 2020, no material adjustments are expected. The IRS examination of tax year 2022 is ongoing. It is reasonably possible that settlement negotiations and expiration of statutes of limitations could result in a decrease in unrecognized tax benefits in 2023 by up to $ 39 million for Dominion Energy. If such changes were to occur, other than revisions of the accrual for interest on tax underpayments and overpayments, earnings could increase by up to $ 26 million for Dominion Energy. Otherwise, with regard to 2022 and prior years, the Companies cannot estimate the range of reasonably possible changes to unrecognized tax benefits that may occur in 2023. For each of the major states in which Dominion Energy operates or previously operated, the earliest tax year remaining open for examination is as follows: State Earliest Open Tax Year Pennsylvania (1) 2012 Connecticut 2019 Virginia (2) 2019 Utah (1) 2019 South Carolina 2019 (1) Considered a major state for entities presented in discontinued operations. (2) Considered a major state for Virginia Power’s operations. The Companies are also obligated to report adjustments resulting from IRS settlements to state tax authorities. In addition, if Dominion Energy utilizes operating losses or tax credits generated in years for which the statute of limitations has expired, such amounts are generally subject to examination.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2022
Fair Value Disclosures [Abstract]
Fair Value Measurements	NOTE 6. FAIR VALUE MEASUREMENTS The Companies’ fair value measurements are made in accordance with the policies discussed in Note 2. See Note 7 for additional information about the Companies’ derivative and hedge accounting activities. The Companies enter into certain physical and financial forwards, futures and options, which are considered Level 3 as they have one or more inputs that are not observable and are significant to the valuation. The discounted cash flow method is used to value Level 3 physical and financial forwards and futures contracts. An option model is used to value Level 3 physical options. The discounted cash flow model for forwards and futures calculates mark-to-market valuations based on forward market prices, original transaction prices, volumes, risk-free rate of return and credit spreads. The option model calculates mark-to-market valuations using variations of the Black-Scholes option model. The inputs into the models are the forward market prices, implied price volatilities, risk-free rate of return, the option expiration dates, the option strike prices, the original sales prices and volumes. For Level 3 fair value measurements, certain forward market prices and implied price volatilities are considered unobservable. The following table presents the Companies' quantitative information about Level 3 fair value measurements at December 31, 2022. The range and weighted average are presented in dollars for market price inputs and percentages for price volatility. Dominion Energy Virginia Power Valuation Unobservable Fair Value (millions) Range Weighted (1) Fair Value (millions) Range Weighted (1) Assets Physical and financial forwards: FTRs Discounted Market price (3) $ 214 2 - 24 6 $ 214 2 - 24 6 Electricity Discounted Market price (3) 201 27 - 110 51 — — — Physical options: Natural gas (2) Option model Market price (3) 22 3 - 16 10 22 3 - 16 10 Price volatility (4) 11 %- 63 % 45 % 11 %- 63 % 45 % Total assets $ 437 $ 236 Liabilities Physical and financial forwards: Natural gas (2) Discounted Market price (3) $ 10 ( 2 )- 4 ( 1 ) $ 10 ( 2 )- 4 ( 1 ) FTRs Discounted Market price (3) 5 2 - 12 5 5 2 - 12 5 Total $ 15 $ 15 (1) Averages weighted by volume. (2) Includes basis. (3) Represents market prices beyond defined terms for Levels 1 and 2. (4) Represents volatilities unrepresented in published markets. Sensitivity of the fair value measurements to changes in the significant unobservable inputs is as follows: Significant Unobservable Inputs Position Change to Input Impact on Fair Value Measurement Market price Buy Increase (decrease) Gain (loss) Market price Sell Increase (decrease) Loss (gain) Price volatility Buy Increase (decrease) Gain (loss) Price volatility Sell Increase (decrease) Loss (gain) Nonrecurring Fair Value Measurements See Note 3 for information on the nonrecurring fair value measurement associated with Dominion Energy's acquisition of Birdseye and its retained noncontrolling interest in Cove Point. See Note 9 for information regarding nonrecurring fair value measurements associated with charges related to Fowler Ridge, Dominion Energy's noncontrolling interest in businesses and assets contributed to Wrangler and Dominion Energy's noncontrolling ownership interest in Dominion Privatization. See Note 10 for information regarding impairment charges recorded by Dominion Energy associated with nonregulated solar facilities and non-wholly-owned nonregulated solar facilities in partnerships. In 2021, Dominion Energy recorded a charge of $ 20 million ($ 15 million after-tax) in impairment of assets and other charges in its Consolidated Statements of Income (reflected in the Corporate and Other segment) to write off substantially all of the long-lived assets of its nonregulated retail software development operations to their estimated fair value, using a market approach, of less than $ 1 million. The valuation is considered a Level 2 fair value measurement given that it is based on bids received. In 2021, Dominion Energy recorded a charge of $ 16 million ($ 12 million after-tax) in impairment of assets and other charges in its Consolidated Statements of Income to adjust a corporate office building down to its estimated fair value, using both an income and market approach, of $ 26 million. The valuation is considered a Level 3 measurement due to the use of significant judgmental and unobservable inputs, including projected timing and amount of future cash flows and discount rates inherent in the future cash flows and market prices. The corporate office building is reflected in the Corporate and Other segment and presented as held for sale in Dominion Energy’s Consolidated Balance Sheets at both December 31, 2022 and 2021. Recurring Fair Value Measurements Fair value measurements are separately disclosed by level within the fair value hierarchy with a separate reconciliation of fair value measurements categorized as Level 3. Fair value disclosures for assets held in the Companies' pension and other postretirement benefit plans are presented in Note 22. The following table presents the Companies' assets and liabilities that are measured at fair value on a recurring basis for each hierarchy level, including both current and noncurrent portions: Dominion Energy Virginia Power Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total (millions) December 31, 2022 Assets Derivatives: Commodity $ — $ 332 $ 437 $ 769 $ — $ 32 $ 236 $ 268 Interest rate — 1,407 — 1,407 — 614 — 614 Investments (1) : Equity securities: U.S. 3,810 — — 3,810 2,028 — — 2,028 Fixed income: Corporate debt instruments — 576 — 576 — 360 — 360 Government securities 161 1,059 — 1,220 90 542 — 632 Total assets $ 3,971 $ 3,374 $ 437 $ 7,782 $ 2,118 $ 1,548 $ 236 $ 3,902 Liabilities Derivatives: Commodity $ — $ 911 $ 15 $ 926 $ — $ 333 $ 15 $ 348 Interest rate — 377 — 377 — 7 — 7 Foreign currency exchange — 101 — 101 — 101 — 101 Total liabilities $ — $ 1,389 $ 15 $ 1,404 $ — $ 441 $ 15 $ 456 December 31, 2021 Assets Derivatives: Commodity $ — $ 52 $ 230 $ 282 $ — $ 36 $ 110 $ 146 Interest rate — 323 — 323 — 146 — 146 Foreign currency exchange — 8 — 8 — 8 — 8 Investments (1) : Equity securities: U.S. 5,241 — — 5,241 2,420 — — 2,420 Fixed income: Corporate debt instruments — 881 — 881 — 531 — 531 Government securities 199 1,256 — 1,455 93 506 — 599 Cash equivalents and other ( 29 ) — — ( 29 ) ( 3 ) — — ( 3 ) Total assets $ 5,411 $ 2,520 $ 230 $ 8,161 $ 2,510 $ 1,227 $ 110 $ 3,847 Liabilities Derivatives: Commodity $ — $ 461 $ 8 $ 469 $ — $ 125 $ 8 $ 133 Interest rate — 399 — 399 — 337 — 337 Total liabilities $ — $ 860 $ 8 $ 868 $ — $ 462 $ 8 $ 470 (1) Includes investments held in the nuclear decommissioning trusts and rabbi trusts. Excludes $ 404 million and $ 366 million of assets at Dominion Energy, inclusive of $ 161 million and $ 185 million at Virginia Power, at December 31, 2022 and 2021, respectively, measured at fair value using NAV (or its equivalent) as a practical expedient which are not required to be categorized in the fair value hierarchy. The following table presents the net change in the Companies' assets and liabilities measured at fair value on a recurring basis and included in the Level 3 fair value category: Dominion Energy Virginia Power 2022 2021 2020 2022 2021 2020 (millions) Beginning balance $ 222 $ 103 $ ( 37 ) $ 102 $ 103 $ ( 37 ) Total realized and unrealized gains (losses): Included in earnings: Operating Revenue 2 ( 9 ) — — — — Electric fuel and other energy-related purchases 444 10 ( 33 ) 382 4 ( 33 ) Discontinued operations — — 1 — — — Included in regulatory assets/liabilities 183 119 140 102 ( 1 ) 140 Settlements ( 455 ) ( 10 ) 33 ( 393 ) ( 4 ) 33 Purchases 28 — — 28 — — Sales — — ( 1 ) — — — Transfers out of Level 3 ( 2 ) 9 — — — — Ending balance $ 422 $ 222 $ 103 $ 221 $ 102 $ 103 The Companies’ had no unrealized gains and losses included in earnings in the Level 3 fair value category relating to assets/liabilities still held at the reporting date for the years ended December 31, 2 0 22, 2021 and 2020. Fair Value of Financial Instruments Substantially all of the Companies’ financial instruments are recorded at fair value, with the exception of the instruments described below, which are reported at historical cost. Estimated fair values have been determined using available market information and valuation methodologies considered appropriate by management. The carrying amount of cash, restricted cash and equivalents, customer and other receivables, affiliated receivables, short-term debt, affiliated current borrowings, payables to affiliates and accounts payable are representative of fair value because of the short-term nature of these instruments. For the Companies’ financial instruments that are not recorded at fair value, the carrying amounts and estimated fair values are as follows: Dominion Energy Virginia Power Carrying Estimated Fair Value (1) Carrying Estimated Fair Value (1) (millions) December 31, 2022 Long-term debt (2) $ 39,680 $ 36,426 $ 15,616 $ 14,067 Supplemental credit facility borrowings 450 450 Junior subordinated notes (2) 1,387 1,340 December 31, 2021 Long-term debt (2) $ 35,996 $ 40,947 $ 13,753 $ 16,021 Junior subordinated notes (2) 1,386 1,470 (1) Fair value is estimated using market prices, where available, and interest rates currently available for issuance of debt with similar terms and remaining maturities. All fair value measurements are classified as Level 2. The carrying amount of debt issuances with short-term maturities and variable rates refinanced at current market rates is a reasonable estimate of their fair value. (2) Carrying amount includes current portions included in securities due within one year and amounts which represent the unamortized debt issuance costs and discount or premium. At December 31, 2021, the carrying amount of Dominion Energy’s long-term debt included the valuation of certain fair value hedges associated with fixed-rate debt of $ 2 million. There were no fair value hedges associated with fixed-rate debt at December 31, 2022. Additionally, Dominion Energy carrying amounts include portions classified as current liabilities held for sale and noncurrent liabilities held for sale at both December 31, 2022 and 2021.

Derivatives and Hedge Accountin

Derivatives and Hedge Accounting Activities	12 Months Ended
	Dec. 31, 2022
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Derivatives and Hedge Accounting Activities	NOTE 7. DERIVATIVES AND HEDGE ACCOUNTING ACTIVITIES See Note 2 for the Companies’ accounting policies, objectives, and strategies for using derivative instruments. See Notes 2 and 6 for further information about fair value measurements and associated valuation methods for derivatives. Cash collateral is used in the table below to offset derivative assets and liabilities. In February 2022, Dominion Energy entered into contracts representing offsetting positions to certain existing exchange contracts with collateral requirements as well as new over-the-counter transactions that are not subject to collateral requirements. These contracts resulted in positions which limit the risk of increased cash collateral requirements. Certain accounts receivable and accounts payable recognized on the Companies’ Consolidated Balance Sheets, letters of credit and other forms of securities, as well as certain other long-term debt, all of which are not included in the tables below, are subject to offset under master netting or similar arrangements and would reduce the net exposure. See Note 18 for further information regarding other long-term debt, in the form of restructured derivatives, subject to offset under master netting or similar agreements. See Note 24 for further information regarding credit-related contingent features for the Companies derivative instruments. Balance Sheet Presentation The tables below present the Companies' derivative asset and liability balances by type of financial instrument, if the gross amounts recognized in its Consolidated Balance Sheets were netted with derivative instruments and cash collateral received or paid: Dominion Energy Gross Amounts Not Offset in the Consolidated Balance Sheet Virginia Power Gross Amounts Not Offset in the Consolidated Balance Sheet Gross Assets (1) Financial Cash Net Gross Assets (1) Financial Cash Net (millions) December 31, 2022 Commodity contracts: Over-the-counter $ 408 $ 28 $ — $ 380 $ 238 $ 7 $ — $ 231 Exchange 160 159 — 1 — — — — Interest rate contracts: Over-the-counter 1,407 248 — 1,159 614 38 — 576 Total derivatives, $ 1,975 $ 435 $ — $ 1,540 $ 852 $ 45 $ — $ 807 December 31, 2021 Commodity contracts: Over-the-counter $ 153 $ 13 $ — $ 140 $ 110 $ 8 $ — $ 102 Exchange 9 7 — 2 7 7 — — Interest rate contracts: Over-the-counter 323 49 — 274 146 20 — 126 Foreign currency exchange rate contracts: Over-the-counter 8 — — 8 8 — — 8 Total derivatives, $ 493 $ 69 $ — $ 424 $ 271 $ 35 $ — $ 236 (1) Excludes derivative assets of $ 201 million and $ 120 million at Dominion Energy, and $ 30 million and $ 29 million at Virginia Power, at December 31, 2022 and 2021, respectively, which are not subject to master netting or similar arrangements. Dominion Energy Gross Amounts Not Offset in the Consolidated Balance Sheet Virginia Power Gross Amounts Not Offset in the Consolidated Balance Sheet Gross Liabilities (1) Financial Cash Net Gross Liabilities (1) Financial Cash Net (millions) December 31, 2022 Commodity contracts: Over-the-counter $ 443 $ 34 $ 71 $ 338 $ 146 $ 13 $ 71 $ 62 Exchange 483 159 324 — 176 — 176 — Interest rate contracts: Over-the-counter 377 210 1 166 7 — — 7 Foreign currency exchange rate contracts: Over-the-counter 101 32 — 69 101 32 — 69 Total derivatives, $ 1,404 $ 435 $ 396 $ 573 $ 430 $ 45 $ 247 $ 138 December 31, 2021 Commodity contracts: Over-the-counter $ 95 $ 13 $ 54 $ 28 $ 84 $ 8 $ 54 $ 22 Exchange 374 7 367 — 43 7 36 — Interest rate contracts: Over-the-counter 399 49 11 339 337 20 — 317 Total derivatives, $ 868 $ 69 $ 432 $ 367 $ 464 $ 35 $ 90 $ 339 (1) Excludes derivative liabilities of $ 26 million and $ 6 million at Virginia Power at December 31, 2022 and 2021, respectively, which are not subject to master netting or similar arrangements. Dominion Energy did no t have any derivative liabilities at December 31, 2022 or 2021 which were not subject to master netting or similar arrangements. Volumes The following table presents the volume of the Companies' derivative activity as of December 31, 2022. These volumes are based on open derivative positions and represent the combined absolute value of their long and short positions, except in the case of offsetting transactions, for which they represent the absolute value of the net volume of their long and short positions. Dominion Energy Virginia Power Current Noncurrent Current Noncurrent Natural Gas (bcf): Fixed price 50 2 41 2 Basis (1) 154 414 140 407 Electricity (MWh in millions): Fixed price 16 35 8 9 FTRs 45 — 45 — Oil (Gal in millions) 6 — 6 — Interest rate (2) (in millions) $ 2,003 $ 10,707 $ 1,600 $ 1,950 Foreign currency exchange rate (2) (in millions) Danish Krone 394 kr. 4,167 kr. 394 kr. 4,167 kr. Euro € 780 € 2,131 € 780 € 2,131 (1) Includes options. (2) Maturity is determined based on final settlement period. AOCI The following table presents selected information related to losses on cash flow hedges included in AOCI in the Companies' Consolidated Balance Sheets at December 31, 2022: Dominion Energy Virginia Power AOCI After-Tax Amounts Expected to be Reclassified to Earnings During the Next 12 Months After-Tax Maximum Term AOCI After-Tax Amounts Expected to be Reclassified to Earnings During the Next 12 Months After-Tax Maximum Term (millions) Interest rate $ ( 249 ) $ ( 33 ) 396 months $ 16 $ ( 1 ) 396 months Total $ ( 249 ) $ ( 33 ) $ 16 $ ( 1 ) The amounts that will be reclassified from AOCI to earnings will generally be offset by the recognition of the hedged transactions (e.g., interest rate payments) in earnings, thereby achieving the realization of prices contemplated by the underlying risk management strategies and will vary from the expected amounts presented above as a result of changes in interest rates. Fair Value Hedges For derivative instruments that are designated and qualify as a fair value hedge, the gain or loss on the derivative instrument as well as the offsetting loss or gain on the hedged item attributable to the hedged risk are recognized in current earnings and presented in the same line item. There were no derivative instruments designated as fair value hedges during the years ended December 31, 2022, 2021 and 2020. The following table presents the amounts recorded on Dominion Energy's Consolidated Balance Sheets related to cumulative basis adjustments for fair value hedges all of which related to discontinued hedging relationships at both December 2022 and 2021, respectively: Carrying Amount of the Hedged Assets Cumulative Amount of Fair Value December 31, 2022 December 31, 2021 December 31, 2022 December 31, 2021 (millions) Long-term debt $ — $ ( 352 ) $ — $ ( 2 ) Virginia Power had no amounts recorded in its Consolidated Balance Sheets related to fair value hedges at December 31, 2022 or 2021. Fair Value and Gains and Losses on Derivative Instruments The following tables present the fair values of the Companies' derivatives and where they are presented in their Consolidated Balance Sheets: Dominion Energy Virginia Power Fair Value – Fair Value – Total Fair Fair Value – Fair Value – Total Fair (millions) At December 31, 2022 ASSETS Current Assets Commodity $ — $ 532 $ 532 $ — $ 264 $ 264 Interest rate 501 104 605 501 — 501 Total current derivative assets (1) 501 636 1,137 501 264 765 Noncurrent Assets Commodity — 237 237 — 4 4 Interest rate 113 689 802 113 — 113 Total noncurrent derivative assets (2)(3) 113 926 1,039 113 4 117 Total derivative assets $ 614 $ 1,562 $ 2,176 $ 614 $ 268 $ 882 LIABILITIES Current Liabilities Commodity $ — $ 700 $ 700 $ — $ 290 $ 290 Interest rate — 70 70 — — — Foreign currency — 8 8 — 8 8 Total current derivative liabilities (4) — 778 778 — 298 298 Noncurrent Liabilities Commodity — 226 226 — 58 58 Interest rate 7 300 307 7 — 7 Foreign currency — 93 93 — 93 93 Total noncurrent derivative liabilities (5)(6) 7 619 626 7 151 158 Total derivative liabilities $ 7 $ 1,397 $ 1,404 $ 7 $ 449 $ 456 At December 31, 2021 ASSETS Current Assets Commodity $ — $ 103 $ 103 $ — $ 74 $ 74 Interest rate 1 17 18 1 — 1 Foreign currency — 1 1 — 1 1 Total current derivative assets (1) 1 121 122 1 75 76 Noncurrent Assets Commodity — 179 179 — 72 72 Interest rate 145 160 305 145 — 145 Foreign currency — 7 7 — 7 7 Total noncurrent derivative assets (3) 145 346 491 145 79 224 Total derivative assets $ 146 $ 467 $ 613 $ 146 $ 154 $ 300 LIABILITIES Current Liabilities Commodity $ — $ 304 $ 304 $ — $ 92 $ 92 Interest rate 42 13 55 42 — 42 Total current derivative liabilities (4) 42 317 359 42 92 134 Noncurrent Liabilities Commodity — 165 165 — 41 41 Interest rate 295 49 344 295 — 295 Total noncurrent derivative liabilities (5)(6) 295 214 509 295 41 336 Total derivative liabilities $ 337 $ 531 $ 868 $ 337 $ 133 $ 470 (1) Includes $ 118 million and $ 6 million reported in current assets held for sale in Dominion Energy's Consolidated Balance Sheets at December 31, 2022 and 2021, respectively. (2) Includes $ 1 million reported in noncurrent assets held for sale in Dominion Energy's Consolidated Balance Sheets at December 31, 2022. (3) Virginia Power’s noncurrent derivative assets are presented in other deferred charges and other assets in its Consolidated Balance Sheets. (4) Includes $ 6 million and $ 3 million reported in current liabilities held for sale in Dominion Energy's Consolidated Balance Sheets at December 31, 2022 and 2021, respectively. (5) Includes $ 1 million reported in noncurrent liabilities held for sale in Dominion Energy's Consolidated Balance Sheets at both December 31, 2022 and 2021. (6) Virginia Power’s noncurrent derivative liabilities are presented in other deferred credits and other liabilities in its Consolidated Balance Sheets. The following tables present the gains and losses on the Companies' derivatives, as well as where the associated activity is presented in their Consolidated Balance Sheets and Statements of Income: Dominion Energy Virginia Power Derivatives in cash flow Amount of Gain (1) Amount of Gain Increase (Decrease) (2) Amount of Gain (1) Amount of Gain Increase (Decrease) (2) (millions) Year Ended December 31, 2022 Derivative type and location of gains (losses): Interest rate (3) $ 89 $ ( 57 ) $ 855 $ 80 $ ( 2 ) $ 854 Total $ 89 $ ( 57 ) $ 855 $ 80 $ ( 2 ) $ 854 Year Ended December 31, 2021 Derivative type and location of gains (losses): Commodity (4) $ ( 1 ) Interest rate (3) $ 21 ( 60 ) $ 135 $ 17 $ ( 3 ) $ 130 Total $ 21 $ ( 61 ) $ 135 $ 17 $ ( 3 ) $ 130 Year Ended December 31, 2020 Derivative type and location of gains (losses): Commodity: Operating revenue $ 25 Purchased gas ( 4 ) Discontinued 2 Total commodity $ — $ 23 $ — $ — $ — $ — Interest rate: Interest and $ ( 83 ) $ ( 37 ) $ ( 2 ) $ ( 338 ) Discontinued ( 236 ) Total interest rate $ ( 309 ) $ ( 319 ) $ ( 332 ) $ ( 37 ) $ ( 2 ) $ ( 338 ) Foreign currency (5) ( 11 ) ( 6 ) — — Total $ ( 320 ) $ ( 302 ) $ ( 332 ) $ ( 37 ) $ ( 2 ) $ ( 338 ) (1) Amounts deferred into AOCI have no associated effect in the Companies' Consolidated Statements of Income. (2) Represents net derivative activity deferred into and amortized out of regulatory assets/liabilities. Amounts deferred into regulatory assets/liabilities have no associated effect in the Companies' Consolidated Statements of Income. (3) Amounts recorded in the Companies' Consolidated Statements of Income are classified in interest and related charges. (4) Amounts recorded in Dominion Energy’s Consolidated Statements of Income are classified in purchased gas. (5) Amounts recorded in Dominion Energy’s Consolidated Statements of Income are classified in discontinued operations. Amount of Gain (Loss) Recognized in Income on Derivatives (1)(2) Derivatives not designated as hedging instruments Dominion Energy Virginia Power Year Ended December 31, 2022 2021 2020 2022 2021 2020 (millions) Derivative type and location of gains (losses): Commodity: Operating revenue $ ( 729 ) $ ( 487 ) $ 73 $ ( 303 ) $ ( 62 ) $ ( 104 ) Purchased gas 13 ( 1 ) ( 20 ) Electric fuel and other energy-related purchases 514 16 ( 104 ) 453 9 — Discontinued operations 8 — ( 11 ) Interest rate: Interest and related charges 406 89 87 Discontinued operations 244 8 5 Foreign currency exchange rate: Discontinued operations — — 12 Total $ 456 $ ( 375 ) $ 42 $ 150 $ ( 53 ) $ ( 104 ) (1) Includes derivative activity amortized out of regulatory assets/liabilities. Amounts deferred into regulatory assets/liabilities have no associated effect in the Companies' Consolidated Statements of Income. (2) Excludes amounts related to foreign currency exchange rate derivatives that are deferred to plant under construction within property, plant and equipment and regulatory assets/liabilities that will begin to amortize once the CVOW Commercial Project is placed in service.

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2022
Earnings Per Share [Abstract]
Earnings Per Share	NOTE 8. EARNINGS PER SHARE The following table presents the calculation of Dominion Energy’s basic and diluted EPS: 2022 2021 2020 (millions, except EPS) Net income attributable to Dominion Energy from continuing operations $ 22 $ 1,931 $ 1,039 Preferred stock dividends (see Note 19) ( 93 ) ( 68 ) ( 65 ) Net income attributable to Dominion Energy from continuing operations - Basic ( 71 ) 1,863 974 Dilutive effect of 2019 Equity Units (1) — — ( 11 ) Net income attributable to Dominion Energy from continuing operations - Diluted $ ( 71 ) $ 1,863 $ 963 Net income (loss) attributable to Dominion Energy from discontinued operations - $ 972 $ 1,357 $ ( 1,440 ) Average shares of common stock outstanding – Basic 823.9 807.8 831.0 Net effect of dilutive securities (2) — 0.7 — Average shares of common stock outstanding – Diluted 823.9 808.5 831.0 EPS from continuing operations - Basic $ ( 0.09 ) $ 2.30 $ 1.17 EPS from discontinued operations - Basic 1.18 1.68 ( 1.73 ) EPS attributable to Dominion Energy - Basic $ 1.09 $ 3.98 $ ( 0.56 ) EPS from continuing operations - Diluted $ ( 0.09 ) $ 2.30 $ 1.16 EPS from discontinued operations - Diluted 1.18 1.68 ( 1.73 ) EPS attributable to Dominion Energy - Diluted $ 1.09 $ 3.98 $ ( 0.57 ) (1) As discussed in Note 19, effective in June 2022 through its redemption in September 2022, the Series A Preferred Stock was considered to be mandatorily redeemable and was classified in current liabilities. In accordance with revised accounting standards effective January 2022, a fair value adjustment, if dilutive, of the Series A Preferred Stock was no longer included in applying the if converted method to the 2019 Equity Units. In addition, diluted net income was no longer reduced by the Series A Preferred Stock dividends. No fair value adjustment was necessary for 2021. (2) Dilutive securities for 2021 consist primarily of stock potentially to be issued to satisfy the obligation under a settlement agreement with the SCDOR (applying the if converted method) as well as forward sales agreements entered into in November 2021 and settled in December 2022 (applying the treasury stock method). See Notes 20 and 23 for additional information. The 2019 Equity Units, prior to settlement in June 2022, and the Q-Pipe Transaction deposit, prior to being settled in cash in July 2021, were potentially dilutive instruments. See Notes 3 and 19 for additional information. As a result of a net loss attributable to Dominion Energy from continuing operations for the year ended December 31, 2022, any adjustments to earnings or shares would be considered antidilutive and are therefore excluded from the calculation of diluted earnings per share from continuing operations. For the years ended December 31, 2021 and 2020, the forward stock purchase contracts included within the 2019 Equity Units were excluded from the calculation of diluted EPS from continuing operations as the dilutive stock price threshold was not met. The Series A Preferred Stock included within the 2019 Equity Units is excluded from the effect of dilutive securities within diluted EPS from continuing operations, but a fair value adjustment is reflected within net income attributable to Dominion Energy from continuing operations for the calculation of diluted EPS from continuing operations for the year ended December 31, 2020, based upon the expectation that the conversion would be settled in cash rather than through the issuance of Dominion Energy common stock. As described in Note 19, effective November 2021 any settlement of the conversion up to $1,000 per share was payable in cash, and any amount in excess of $1,000 per share could have been settled in cash, common stock or a combination thereof. For the year ended December 31, 2021, a fair value adjustment related to the Series A Preferred Stock included within the 2019 Equity Units is excluded from the calculation of diluted EPS from continuing operations, as such fair value adjustment was not dilutive during the period. The impact of settling the deposit associated with the Q-Pipe Transaction in shares is excluded from the calculation for the years ending December 31, 2021 and 2020 based upon the expectation Dominion Energy would settle in cash, which occurred in July 2021, rather than through the issuance of shares of Dominion Energy common stock.

Investments

Investments	12 Months Ended
	Dec. 31, 2022
Investments Debt And Equity Securities [Abstract]
Investments	NOTE 9. INVESTMENTS Dominion Energy Equity and Debt Securities Short-Term Deposit In May 2022, Dominion Energy entered into an agreement with a financial institution and committed to make a short-term deposit of at least $ 1.6 billion but not more than $ 2.0 billion to be posted as collateral to secure its $ 1.6 billion redemption obligation of the Series A Preferred Stock as described in Note 19. In May 2022, Dominion Energy funded the short-term deposit in the amount of $ 2.0 billion, which earned interest income at an annual rate of 1.75 % through its maturity in September 2022. Rabbi Trust Securities Equity and fixed income securities and cash equivalents in Dominion Energy’s rabbi trusts and classified as trading totaled $ 111 million and $ 122 million at December 31, 2022 and 2021, respectively. Decommissioning Trust Securities The Companies hold equity and fixed income securities and cash equivalents, and Dominion Energy also holds insurance contracts, in nuclear decommissioning trust funds to fund future decommissioning costs for its nuclear plants. The Companies' decommissioning trust funds are summarized below: Dominion Energy Virginia Power Amortized Total Total Allowance for Credit Losses Fair Amortized Total Total Allowance for Credit Losses Fair (millions) December 31, 2022 Equity securities: (1) U.S. $ 1,378 $ 2,501 $ ( 46 ) $ 3,833 $ 858 $ 1,304 $ ( 35 ) $ 2,127 Fixed income securities: (2) Corporate debt 640 1 ( 65 ) $ — 576 406 1 ( 47 ) $ — 360 Government 1,252 4 ( 70 ) — 1,186 664 2 ( 35 ) — 631 Common/ 98 — — — 98 61 — — — 61 Insurance contracts 221 — — 221 Cash equivalents (3) 43 — — — 43 23 — — — 23 Total $ 3,632 $ 2,506 $ ( 181 ) (4) $ — $ 5,957 $ 2,012 $ 1,307 $ ( 117 ) (4) $ — $ 3,202 December 31, 2021 Equity securities: (1) U.S. $ 1,567 $ 3,734 $ ( 13 ) $ 5,288 $ 841 $ 1,720 $ ( 11 ) $ 2,550 Fixed income securities: (2) Corporate debt 854 32 ( 5 ) $ — 881 517 17 ( 3 ) $ — 531 Government 1,382 43 ( 7 ) — 1,418 584 16 ( 2 ) — 598 Common/ 168 4 — — 172 53 — — — 53 Insurance contracts 255 — — 255 Cash equivalents (3) 9 2 ( 75 ) — ( 64 ) 2 — — — 2 Total $ 4,235 $ 3,815 $ ( 100 ) (4) $ — $ 7,950 $ 1,997 $ 1,753 $ ( 16 ) (4) $ — $ 3,734 (1) Unrealized gains and losses on equity securities are included in other income and the nuclear decommissioning trust regulatory liability as discussed in Note 2. (2) Unrealized gains and losses on fixed income securities are included in AOCI and the nuclear decommissioning trust regulatory liability as discussed in Note 2. Changes in allowance for credit losses are included in other income. (3) Dominion Energy includes pending sales of securities of $ 42 million and pending purchases of securities of $ 35 million at December 31, 2022 and 2021, respectively. Virginia Power includes pending sales of securities of $ 24 million and $ 5 million at December 31, 2022 and 2021, respectively. (4) Dominion Energy's fair value of securities in an unrealized loss position was $ 1.6 billion and $ 883 million at December 31, 2022 and 2021, respectively. Virginia Power's fair value of securities in an unrealized loss position was $ 946 million and $ 425 million at December 31, 2022 and 2021, respectively. The portion of unrealized gains and losses that relates to equity securities held within Dominion Energy and Virginia Power's nuclear decommissioning trusts is summarized below: Dominion Energy Virginia Power Year Ended December 31, 2022 2021 2020 2022 2021 2020 (millions) Net gains (losses) recognized during the period $ ( 848 ) $ 1,072 $ 512 $ ( 436 ) $ 552 $ 224 Less: Net (gains) losses recognized during the 8 ( 346 ) ( 16 ) ( 7 ) ( 190 ) ( 6 ) Unrealized gains (losses) recognized during the (1) $ ( 840 ) $ 726 $ 496 $ ( 443 ) $ 362 $ 218 (1) Included in other income and the nuclear decommissioning trust regulatory liability as discussed in Note 2. The fair value of Dominion Energy and Virginia Power's fixed income securities with readily determinable fair values held in nuclear decommissioning trust funds at December 31, 2022 by contractual maturity is as follows: Dominion Energy Virginia Power (millions) Due in one year or less $ 146 $ 80 Due after one year through five years 511 280 Due after five years through ten years 442 279 Due after ten years 761 413 Total $ 1,860 $ 1,052 Presented below is selected information regarding Dominion Energy and Virginia Power's equity and fixed income securities with readily determinable fair values held in nuclear decommissioning trust funds. Dominion Energy Virginia Power Year Ended December 31, 2022 2021 2020 2022 2021 2020 (millions) Proceeds from sales $ 3,282 $ 3,985 $ 4,278 $ 1,538 $ 1,791 $ 884 Realized gains (1) 143 441 340 48 228 88 Realized losses (1) 296 91 297 107 35 68 (1) Includes realized gains and losses recorded to the nuclear decommissioning trust regulatory liability as discussed in Note 2. EQUITY METHOD INVESTMENTS Investments that Dominion Energy accounts for under the equity method of accounting are as follows: Investment Company Ownership% Balance Description As of December 31, 2022 2021 (millions) Cove Point 50 % $ 2,673 (3) $ 2,738 (3) LNG import/export and storage facility Atlantic Coast Pipeline 53 % — (4) — (4) Gas transmission system Wrangler 15 % (2) — 68 Nonregulated retail energy marketing Align RNG (1) 50 % 103 74 Renewable natural gas Dominion Privatization 50 % 176 — Military electric and gas Other various 60 (5) 52 (5) Total $ 3,012 $ 2,932 (1) Dominion Energy’s unfunded commitment to be made to Align RNG by the end of 2022 was $ 8 million at December 31, 2021. The commitment was fully paid in January 2022. (2) Dominion Energy’s sold its remaining 15 % ownership interest in March 2022, following a previous sale of 5 % of its ownership interest in 2021. See discussion below. (3) Presented in noncurrent assets held for sale in Dominion Energy's Consolidated Balance Sheets at December 31, 2022 and 2021. (4) Dominion Energy’s Consolidated Balance Sheets include a liability associated with its investment in Atlantic Coast Pipeline of $ 114 million and $ 113 million at December 31, 2022 and 2021, respectively, presented in other current liabilities. See discussion below for additional information. (5) Includes balances presented in noncurrent assets held for sale in Dominion Energy's Consolidated Balance Sheets of $ 43 million and $ 32 million as of December 31, 2022 and 2021, respectively. Dominion Energy recorded equity earnings (losses) on its investments of $ 21 million, $ 15 million and $( 1 ) million for the years ended December 31, 2022, 2021 and 2020, respectively, in other income (expense) in its Consolidated Statements of Income. In addition, Dominion Energy recorded equity earnings (losses) of $ 271 million, $ 244 million and $( 2.3 ) billion for the years ended December 31, 2022, 2021 and 2020, respectively, in discontinued operations including amounts related to its investments in Cove Point and Atlantic Coast Pipeline discussed below. Dominion Energy received distributions from these investments of $ 355 million, $ 332 million and $ 167 million for the years ended December 31, 2022, 2021 and 2020, respectively. As of December 31, 2022 and 2021, the net difference between the carrying amount of Dominion Energy’s investments and its share of underlying equity in net assets was $ 223 million and $ 244 million, respectively. At December 31, 2022, these differences are comprised of $ 9 million of equity method goodwill that is not being amortized, $ 215 million basis difference from Dominion Energy’s investment in Cove Point, which is being amortized over the useful lives of the underlying assets and a net $( 1 ) million basis difference primarily attributable to capitalized interest. At December 31, 2021, these differences are comprised of $ 27 million of equity method goodwill that is not being amortized, $ 221 million basis difference from Dominion Energy’s investment in Cove Point, which is being amortized over the useful lives of the underlying assets and a net $( 4 ) million basis difference primarily attributable to an unfunded commitment made to Align RNG. Cove Point In November 2020, in conjunction with the GT&S Transaction, Dominion Energy sold 100 % of its general partner interest and 25 % of the total limited partner interest in Cove Point. Dominion Energy retained a 50 % noncontrolling limited partnership interest in Cove Point which is accounted for as an equity method investment as Dominion Energy has the ability to exercise significant influence over, but not control, Cove Point. See Note 3 for further information regarding the GT&S Transaction. Income before income taxes recorded for 100 % of Cove Point for the years ended December 31, 2022, 2021 and 2020 was $ 574 million, $ 528 million and $ 511 million, respectively. For the periods prior to closing of the GT&S Transaction, earnings attributable to Dominion Energy are presented in discontinued operations. Subsequent to the closing of the GT&S Transaction, earnings attributable to Dominion Energy are considered earnings on equity method investees. In 2020, earnings attributable to Dominion Energy of $ 40 million are considered earnings on equity method investees. Dominion Energy recorded distributions from Cove Point of $ 344 million, $ 300 million and $ 70 million for the years ended December 31, 2022, 2021 and 2020 (after the date of disposal), respectively. Dominion Energy made no contributions to Cove Point for the years ended December 31, 2022, 2021 or 2020 (after the date of disposal). In July 2023, Dominion Energy entered into an agreement to sell its 50 % noncontrolling limited partnership interest in Cove Point to BHE for cash consideration of $ 3.3 billion which closed in September 2023 after all customary closing and regulatory conditions were satisfied, including clearance under the Hart-Scott-Rodino Act and approval from the DOE. The sale is treated as an asset sale for tax purposes. In addition, Dominion Energy received proceeds of $ 199 million from the settlement of related interest rate derivatives. In connection with closing, Dominion Energy utilized proceeds, as required, to repay DECP Holding's term loan secured by its noncontrolling interest in Cove Point, which had an outstanding balance of $ 2.2 billion, and $ 750 million of outstanding borrowings under Dominion Energy’s two $ 600 million 364-day term loan facilities entered in July 2023. In September 2023, as a result of Dominion Energy entering agreements for the East Ohio, PSNC and Questar Gas Transactions, Dominion Energy’s 50 % noncontrolling limited partnership interest in Cove Point also met the requirements to be presented as discontinued operations and held for sale as both disposition activities were executed in connection with Dominion Energy’s comprehensive business review announced in November 2022. In addition, interest expense associated with DECP Holding's term loan secured by its noncontrolling interest in Cove Point and related interest rate derivatives have been classified as discontinued operations. As a result, the previously reported amounts have been recast to reflect this presentation. Amounts presented in discontinued operations within Dominion Energy's Consolidated Statements of Income for the years ended December 31, 2022, 2021 and 2020 also include $ 277 million, $ 259 million and $ 40 million, respectively, for earnings on equity method investees and $( 160 ) million and $ 12 million of interest expense (benefit) for the years ended December 31, 2022 and 2021, respectively. In addition, amounts presented in discontinued operations include $ 92 million, $ 60 million and $ 8 million, respectively, of income tax expense. All activity relating to Dominion Energy’s noncontrolling interest in Cove Point is recorded, following the segment change discussed in Note 1, within the Corporate and Other segment. See Note 3 for further information regarding the GT&S Transaction. Atlantic Coast Pipeline In September 2014, Dominion Energy, along with Duke Energy and Southern, announced the formation of Atlantic Coast Pipeline for the purpose of constructing an approximately 600 -mile natural gas pipeline running from West Virginia through Virginia to North Carolina. Subsidiaries and affiliates of Dominion Energy, Duke Energy and Southern had planned to be customers of the pipeline under 20 -year contracts. In March 2020, Dominion Energy completed the acquisition from Southern of its 5 % membership interest in Atlantic Coast Pipeline and its 100 % ownership interest in Pivotal LNG, Inc., for $ 184 million in aggregate, subject to certain purchase price adjustments. Pivotal LNG, Inc. includes a 50 % noncontrolling interest in JAX LNG. Following completion of the acquisition, Dominion Energy owns a 53 % noncontrolling membership interest in Atlantic Coast Pipeline with Duke Energy owning the remaining interest. Atlantic Coast Pipeline continues to be accounted for as an equity method investment as the power to direct the activities most significant to Atlantic Coast Pipeline is shared with Duke Energy. As a result, Dominion Energy has the ability to exercise significant influence, but not control, over the investee. The Atlantic Coast Pipeline Project had been the subject of challenges in federal courts including, among others, challenges of the Atlantic Coast Pipeline Project’s biological opinion and incidental take statement, permits providing right of way crossings of certain federal lands, the U.S. Army Corps of Engineers 404 permit, the air permit for a compressor station at Buckingham, Virginia, and the FERC order approving the CPCN. Each of these challenges alleged non-compliance on the part of federal and state permitting authorities and adverse ecological consequences if the Atlantic Coast Pipeline Project was permitted to proceed. Since December 2018, notable developments in these challenges included a stay in December 2018 issued by the U.S. Court of Appeals for the Fourth Circuit and the same court’s July 2019 vacatur of the biological opinion and incidental take statement (which stay and subsequent vacatur halted most project construction activity), the U.S. Court of Appeals for the Fourth Circuit decisions vacating the permits to cross certain federal forests and the air permit for a compressor station at Buckingham, Virginia, the U.S. Court of Appeals for the Fourth Circuit’s remand to the U.S. Army Corps of Engineers of Atlantic Coast Pipeline’s Huntington District 404 verification and the U.S. Court of Appeals for the Fourth Circuit’s remand to the National Park Service of Atlantic Coast Pipeline’s Blue Ridge Parkway right-of-way. In June 2019, the Solicitor General of the U.S. and Atlantic Coast Pipeline filed petitions requesting that the Supreme Court of the U.S. hear the case regarding the Appalachian Trail crossing and in June 2020, the Supreme Court of the U.S. ruled in favor of the Atlantic Coast Pipeline, reversing the lower court’s decision and remanding the case back to the U.S. Court of Appeals for the Fourth Circuit. The project also faced new and serious challenges from uncertainty related to NWP 12, specifically, from the decision of the U.S. District Court for the District of Montana in April 2020 vacating an NWP 12 issued by the U.S. Army Corps of Engineers, including among other things gas pipelines, followed by a U.S. Court of Appeals for the Ninth Circuit ruling in May 2020 denying a stay of that decision. In July 2020, the Supreme Court of the U.S. issued an order allowing other new oil and gas pipeline projects to use the NWP 12 process pending appeal to the U.S. Court of Appeals for the Ninth Circuit; however, that did not decrease the uncertainty associated with an eventual ruling. The Montana district court decision was viewed as likely to prompt similar challenges in other federal circuit courts related to permits issued under NWP 12, including for the Atlantic Coast Pipeline Project. In July 2020, as a result of ongoing permitting delays, growing legal uncertainties and the need to incur significant capital expenditures to maintain project timing before such uncertainties could be resolved, Dominion Energy and Duke Energy announced the cancellation of the Atlantic Coast Pipeline Project. Dominion Energy recorded equity method losses of $ 2.3 billion ($ 1.8 billion after-tax) for the year ended December 31, 2020, as a result of the determination of the probable abandonment of the Atlantic Coast Pipeline Project in June 2020, and $ 7 million ($ 5 million after-tax) and $ 20 million ($ 14 million after-tax) for the years ended December 31, 2022 and 2021, respectively. In connection with Dominion Energy’s decision to sell substantially all of its gas transmission and storage operations, Dominion Energy has reflected the results of its equity method investment in Atlantic Coast Pipeline as discontinued operations in its Consolidated Statements of Income. As a result of its share of equity losses exceeding its investment, Dominion Energy’s Consolidated Balance Sheets at December 31, 2022 and 2021 include a liability of $ 114 million and $ 113 million, respectively, presented in other current liabilities and reflecting Dominion Energy’s obligations to Atlantic Coast Pipeline related to AROs. In October 2017, Dominion Energy entered into a guarantee agreement to support a portion of Atlantic Coast Pipeline’s obligation under a $ 3.4 billion revolving credit facility with a stated maturity date of October 2021 . In July 2020, the capacity of the revolving credit facility was reduced from $ 3.4 billion to $ 1.9 billion. In February 2021, Atlantic Coast Pipeline repaid the outstanding borrowed amounts and terminated its revolving credit facility. Concurrently, Dominion Energy’s related guarantee agreement to support its portion of the Atlantic Coast Pipeline’s borrowings was also terminated. In 2020, Dominion Energy recorded a $ 48 million adjustment related to this guarantee agreement, reflected within equity as a cumulative effect of a change in accounting principle upon adoption of a new credit loss standard in January 2020. Dominion Energy recorded contributions of $ 3 million, $ 965 million and $ 107 million during the years ended December 31, 2022, 2021 and 2020, respectively, to Atlantic Coast Pipeline. Dominion Energy expects to incur additional losses from Atlantic Coast Pipeline as it completes wind-down activities. While Dominion Energy is unable to precisely estimate the amounts to be incurred by Atlantic Coast Pipeline, the portion of such amounts attributable to Dominion Energy is not expected to be material to Dominion Energy’s results of operations, financial position or statement of cash flows. DETI provided services to Atlantic Coast Pipeline which totaled $ 49 million during the year ended December 31, 2020 (prior to closing of the GT&S Transaction), included in discontinued operations in Dominion Energy’s Consolidated Statements of Income. All activity relating to Atlantic Coast Pipeline is recorded within the Corporate and Other segment. Fowler Ridge In September 2020, Dominion Energy sold its 50 % noncontrolling partnership interest in Fowler Ridge to BP and terminated an affiliate’s long-term power, capacity and renewable energy credit contract with Fowler Ridge for a net payment by Dominion Energy of $ 150 million. The $ 150 million payment was allocated between the contract termination and sale based on the relative fair value of each using an income approach. The fair value determinations for the payment allocations are considered Level 3 fair value measurements due to the use of significant judgmental and unobservable inputs, including the amount of future cash flows and discount rate reflecting risks inherent in the future cash flows and market prices. Dominion Energy recognized a loss of $ 221 million ($ 165 million after-tax) on the contract termination, included in impairment of assets and other charges in its Consolidated Statements of Income for the year ended December 31, 2020, reflected in the Corporate and Other segment. All activity relating to Fowler Ridge, unless otherwise specified, is recorded within Contracted Energy. Wrangler In September 2019, Dominion Energy entered into an agreement to form Wrangler, a partnership with Interstate Gas Supply, Inc. Wrangler operated a nonregulated natural gas retail energy marketing business with Dominion Energy contributing its nonregulated retail energy marketing operations and Interstate Gas Supply, Inc. contributing cash. At December 31, 2021 Dominion Energy had a 15 % noncontrolling ownership interest in Wrangler, which was accounted for as an equity method investment as Dominion Energy had the ability to exercise significant influence, but not control, over the investee. After an initial contribution of assets to Wrangler in 2019 for which Dominion Energy received cash and a 20 % noncontrolling ownership interest in Wrangler, Dominion Energy completed a second contribution in November 2020, consisting of certain nonregulated natural gas retail energy contracts for which Dominion Energy received $ 74 million in cash proceeds and retained a 20 % noncontrolling ownership interest through its ownership interest in Wrangler in the contracts valued at $ 13 million using the market approach. This valuation is considered a Level 2 fair value measurement given that it is based on the agreed-upon sales price. In connection with the transaction, Dominion Energy recorded a gain of $ 64 million presented in losses (gains) on sales of assets, and an associated tax expense of $ 19 million, in the Consolidated Statements of Income for the year ended December 31, 2020. The final contribution, consisting of Dominion Energy’s remaining nonregulated natural gas retail energy marketing operations, closed in December 2021 for which Dominion Energy received $ 127 million in cash proceeds and retained a 20 % noncontrolling ownership interest in Wrangler with an initial fair value of $ 23 million estimated using the market approach. This valuation is considered a Level 2 fair value measurement given that it is based on the agreed-upon sales price. In connection with the transaction, Dominion Energy recorded a gain of $ 87 million, net of a $ 14 million write-off of goodwill, presented in losses (gains) on sales of assets, and an associated tax expense of $ 32 million, in the Consolidated Statements of Income for the year ended December 31, 2021. Subsequently in December 2021, Dominion Energy sold 5 % of its noncontrolling ownership interest in Wrangler to Interstate Gas Supply, Inc. for $ 33 million and recorded a gain of $ 10 million, presented in other income, and an associated tax expense of $ 3 million, in the Consolidated Statements of Income for the year ended December 31, 2021. In March 2022, Dominion Energy sold its remaining 15 % noncontrolling partnership interest in Wrangler to Interstate Gas Supply, Inc. for cash consideration of $ 85 million. Dominion Energy recognized a gain of $ 11 million ($ 8 million after-tax), included in other income, in its Consolidated Statements of Income for the year ended December 31, 2022. All activity relating to Wrangler is recorded within the Corporate and Other segment. Dominion Privatization In February 2022 , Dominion Energy entered into an agreement to form Dominion Privatization, a partnership with Patriot. Dominion Privatization, through its wholly-owned subsidiaries, will maintain and operate electric and gas distribution infrastructure under service concession arrangements with certain U.S. military installations. Under the agreement, Dominion Energy would contribute its existing privatization operations, excluding contracts held by DESC, and Patriot would contribute cash. The initial contribution, consisting of privatization operations in South Carolina, Texas and Pennsylvania, closed in March 2022 for which Dominion Energy received total consideration of $ 120 million, subject to customary closing adjustments, comprised of $ 60 million in cash proceeds and a 50 % noncontrolling ownership interest in Dominion Privatization with an initial fair value of $ 60 million, estimated using the market approach. This is considered a Level 2 fair value measurement given that it is based on the agreed-upon sales price. In the first quarter of 2022, Dominion Energy recorded a gain of $ 23 million ($ 16 million after-tax), presented in losses (gains) on sales of assets in its Consolidated Statements of Income. Dominion Energy’s 50 % noncontrolling ownership interest in Dominion Privatization is accounted for as an equity method investment as Dominion Energy has the ability to exercise significant influence, but not control, over the investee. The second contribution, consisting of privatization operations in Virginia, closed in December 2022 for which Dominion Energy received total consideration of $ 215 million, subject to customary closing adjustments, comprised of $ 108 million in cash proceeds and retention of its 50 % noncontrolling ownership interest valued at $ 107 million using the market approach. This is considered a Level 2 fair value measurement given that it is based on the agreed-upon sales price. In the fourth quarter of 2022, Dominion Energy recorded a gain of $ 133 million ($ 99 million after-tax), presented in losses (gains) on sales of assets in its Consolidated Statements of Income. All activity related to Dominion Privatization is reflected within the Corporate and Other segment.

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2022
Property Plant And Equipment [Abstract]
Property, Plant and Equipment	NOTE 10. PROPERTY, PLANT AND EQUIPMENT Major classes of property, plant and equipment and their respective balances for the Companies are as follows: Dominion Energy Virginia Power At December 31, 2022 2021 2022 2021 (millions) Dominion Energy Utility: Generation $ 23,720 $ 23,378 $ 17,611 $ 17,325 Transmission 15,179 13,798 13,034 11,760 Distribution 20,154 19,370 14,681 13,621 Storage 76 76 — — Nuclear fuel 2,373 2,306 1,823 1,702 General and other 1,625 1,527 1,019 912 Plant under construction 5,308 3,393 4,685 2,865 Total utility 68,435 63,848 52,853 48,185 Non-jurisdictional - including plant under construction 1,834 1,694 1,834 1,694 Nonutility: Nonregulated generation-nuclear 1,935 1,773 — — Nonregulated generation-solar 411 1,941 — — Nuclear fuel 954 1,056 — — Other-including plant under construction 1,609 1,184 10 11 Total nonutility 4,909 5,954 10 11 Total property, plant and equipment $ 75,178 $ 71,496 $ 54,697 $ 49,890 Jointly-Owned Power Stations The Companies proportionate share of jointly-owned power stations at December 31, 2022 is as follows: Bath County Pumped Storage Station (1) North Anna Units 1 and 2 (1) Clover Power Station (1) Millstone Unit 3 (2) Summer Unit 1 (2) (millions, except percentages) Ownership interest 60 % 88.4 % 50 % 93.5 % 66.7 % Plant in service 1,066 2,540 611 1,487 1,532 Accumulated depreciation ( 730 ) ( 1,402 ) ( 282 ) ( 563 ) ( 724 ) Nuclear fuel — 792 — 551 550 Accumulated amortization of nuclear fuel — ( 602 ) — ( 459 ) ( 347 ) Plant under construction 3 253 — 68 87 (1) Units jointly owned by Virginia Power. (2) Unit jointly owned by Dominion Energy. The co-owners are obligated to pay their share of all future construction expenditures and operating costs of the jointly-owned facilities in the same proportion as their respective ownership interest. The Companies report their share of operating costs in the appropriate operating expense (electric fuel and other energy-related purchases, other operations and maintenance, depreciation, depletion and amortization and other taxes, etc.) in the Consolidated Statements of Income. Nonregulated Solar Projects The following table presents acquisitions by Virginia Power of non-jurisdictional solar projects (reflected in Dominion Energy Virginia). Virginia Power has claimed or expects to claim federal investment tax credits on the projects, except as otherwise noted. Project Name Date Agreement Date Agreement Project Location Project Cost (1) Date of Commercial MW Capacity Grasshopper (2) August 2018 May 2019 Virginia 128 October 2020 80 Chestnut August 2018 May 2019 North Carolina 127 January 2020 75 Ft. Powhatan June 2019 June 2019 Virginia 267 January 2022 150 Belcher (3) June 2019 August 2019 Virginia 164 June 2021 88 Bedford August 2019 November 2019 Virginia 106 November 2021 70 Maplewood October 2019 October 2019 Virginia 210 December 2022 120 Rochambeau December 2019 January 2020 Virginia 35 December 2021 20 Pumpkinseed May 2020 May 2020 Virginia 138 September 2022 60 Bookers Mill February 2021 June 2021 Virginia 225 Expected 2023 (4) 127 (1) Includes acquisition costs. (2) Referred to as Butcher Creek once placed in service. (3) Referred to as Desper once placed in service. (4) Virginia Power expects to claim production tax credits on the energy generated and sold by project. In addition, the following table presents acquisitions by Dominion Energy of solar projects (reflected in Contracted Energy). Dominion Energy has claimed or expects to claim federal investment tax credits on the projects, except as otherwise noted. Project Name Date Agreement Date Agreement Project Location Project Cost (1) Date of Commercial MW Capacity Greensville August 2019 August 2019 Virginia $ 127 December 2020 80 Myrtle August 2019 August 2019 Virginia 32 June 2020 15 Blackville May 2020 May 2020 South Carolina 12 December 2020 7 Denmark May 2020 May 2020 South Carolina 14 December 2020 6 Yemassee May 2020 August 2020 South Carolina 17 January 2021 10 Trask May 2020 October 2020 South Carolina 22 March 2021 12 Hardin I June 2020 June 2020 Ohio 240 Split (2) 150 Madison July 2020 July 2020 Virginia 165 Expected 2024 (3) 62 Hardin II August 2020 Terminated (4) Atlanta Farms March 2022 May 2022 Ohio 390 Expected split (3)(5) 200 (1) Includes acquisition costs. (2) In December 2020 and January 2021, 97 MW and 53 MW of the project commenced commercial operations, respectively. (3) Dominion Energy expects to claim production tax credits on the energy generated and sold by project. (4) In January 2023, Dominion Energy terminated its agreement, without penalty, to acquire Hardin II. (5) Expected to be split between 2023 and 2024. In addition to the facilities discussed above, Dominion Energy has also entered into various agreements to install solar facilities (reflected in the Corporate and Other segment effective September 2023), primarily at schools in Virginia. As of December 31, 2022, Dominion Energy had placed in service solar facilities with an aggregate generation capacity of 23 MW at a cost of $ 48 million and anticipates placing additional facilities in service by the end of 2023 with an estimated total projected cost of approximately $ 39 million and an aggregate generation capacity of 17 MW. Dominion Energy has claimed or expects to claim federal investment tax credits on the projects. Impairment In the fourth quarter of 2022, Dominion Energy modified its intentions for the ongoing growth and development of its nonregulated solar generation assets as part of the preliminary stages of its comprehensive business review announced in November 2022. In connection with that determination, Dominion Energy expects that it is more likely than not that the nonregulated solar generation projects within Contracted Energy will be sold before the end of their useful lives and therefore evaluated the associated long-lived assets for recoverability. Given their strategic alignment with Virginia Power’s operations, the non-jurisdictional solar generation projects reflected in Dominion Energy Virginia were not further evaluated for recoverability. Using a probability-weighted approach, Dominion Energy determined Contracted Energy’s nonregulated solar generation assets were impaired and recorded a charge of $ 1.5 billion ($ 1.1 billion after-tax) in impairment of assets and other charges in its Consolidated Statements of Income (reflected in the Corporate and Other segment) for the year ended December 31, 2022 to adjust the property, plant and equipment, intangible assets and right-of-use lease assets down to an estimated fair value of $ 665 million in aggregate. The fair value was estimated using an income approach. The valuation is considered a Level 3 fair value measurement due to the use of significant judgmental and unobservable inputs, including projected timing and amount of future cash flows and discount rates reflecting risks inherent in the future cash flows and market prices. Non-Wholly-Owned Nonregulated Solar Facilities Impairment In the third quarter of 2020, Dominion Energy performed a strategic review of its long-term intentions for its contracted nonregulated solar generation assets in partnerships outside of its core electric service territories in consideration of the impact of the VCEA and Dominion Energy’s decision to sell substantially all of its gas transmission and storage operations. Based on an evaluation of Dominion Energy’s interests in these long-lived assets for recoverability under a probability weighted approach, Dominion Energy determined the assets were impaired. As a result of this evaluation, Dominion Energy recorded a charge of $ 665 million ($ 293 million after-tax attributable to Dominion Energy and $ 267 million attributable to noncontrolling interest) in impairment of assets and other charges in its Consolidated Statements of Income (reflected in the Corporate and Other segment) for the year ended December 31, 2020 to adjust the property, plant and equipment down to its estimated fair value of $ 1.4 billion. The fair value was estimated using an income approach. The valuation is considered a Level 3 fair value measurement due to the use of significant judgmental and unobservable inputs, including projected timing and amount of future cash flows and discount rates reflecting risks inherent in the future cash flows and market prices. Sale to Terra Nova Renewable Partners In August 2021, Dominion Energy entered into an agreement with Terra Nova Renewable Partners to sell SBL Holdco, which held Dominion Energy’s 67 % controlling interest in certain nonregulated solar projects for consideration of $ 456 million, subject to customary closing adjustments, with the amount of cash reduced by the amount of SBL Holdco’s debt outstanding at closing. The sale was contingent on clearance or approval under the Hart-Scott-Rodino Act and by FERC as well as other customary closing and regulatory conditions. In September 2021, the waiting period under the Hart-Scott-Rodino Act expired and in October 2021, FERC approved the proposed sale. In December 2021, the transaction closed and Dominion Energy recorded a gain of $ 19 million ($ 15 million after-tax) in losses (gains) on sales of assets in its Consolidated Statements of Income (reflected in the Corporate and Other segment). Except as specifically identified, all activity related to SBL Holdco is recorded within Contracted Energy. Sale to Clearway In August 2021, Dominion Energy entered an agreement with Clearway to sell its 50 % controlling interest in Four Brothers and Three Cedars for $ 335 million in cash, subject to customary closing adjustments. The transaction was contingent on clearance or approval under the Hart-Scott-Rodino Act and by FERC as well as other customary closing and regulatory conditions. In October 2021, the waiting period under the Hart-Scott-Rodino Act expired. In December 2021, the transaction closed and Dominion Energy recorded a loss of $ 229 million ($ 176 million after-tax) in losses (gains) on sales of assets in its Consolidated Statements of Income (reflected in the Corporate and Other segment), primarily associated with the derecognition of noncontrolling interest. Except as specifically identified, all activity related to Four Brothers and Three Cedars is recorded within Contracted Energy. Virginia Power CCRO Utilization In 2021, Virginia Power wrote off $ 318 million, primarily to accumulated depreciation, representing the utilization of a CCRO in accordance with the GTSA in connection with the settlement of the 2021 Triennial Review. See Note 13 for additional information. Sale of Utility Property In 2022, Dominion Energy completed the sales of certain utility property in South Carolina, as approved by the South Carolina Commission, for total cash consideration of $ 20 million. In connection with the sales, Dominion Energy recognized a gain of $ 20 million ($ 15 million after-tax), recorded in losses (gains) on sales of assets, in its Consolidated Statements of Income (reflected in Dominion Energy South Carolina) for the year ended December 31, 2022.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	12 Months Ended
	Dec. 31, 2022
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	NOTE 11. GOODWILL AND INTANGIBLE ASSETS Goodwill The changes in Dominion Energy’s carrying amount and segment allocation of goodwill are presented below: Dominion Energy Virginia Dominion Energy South Carolina Contracted Energy Corporate and Other Total (millions) Dominion Energy Balance at December 31, 2020 (1) $ 2,106 $ 1,521 $ 492 $ 110 $ 4,229 Acquisition of Birdseye (2) — — 24 — 24 Balance at December 31, 2021 (1) $ 2,106 $ 1,521 $ 516 $ 110 $ 4,253 Sale of Hope (2) — — — ( 110 ) ( 110 ) Balance at December 31, 2022 (1) $ 2,106 $ 1,521 $ 516 $ — $ 4,143 (1) Goodwill amounts do not contain any accumulated impairment losses. (2) See Note 3 for more information . Other Intangible Assets The Companies’ other intangible assets are subject to amortization over their estimated useful lives. Dominion Energy’s amortization expense for intangible assets was $ 103 million, $ 70 million and $ 63 million for the years ended December 31, 2022, 2021 and 2020, respectively. In 2022, Dominion Energy acquired $ 478 million of intangible assets, primarily representing RGGI allowances and software, with an estimated weighted-average amortization period of approximately 3 years . Amortization expense for Virginia Power’s intangible assets was $ 67 million, $ 31 million and $ 28 million for the years ended December 31, 2022, 2021 and 2020, respectively. In 2022, Virginia Power acquired $ 430 million of intangible assets, primarily representing RGGI allowances and software, with an estimated weighted-average amortization period of 2 years . The components of intangible assets are as follows: 2022 2021 At December 31, Gross Carrying Amount Accumulated Amortization Gross Carrying Amount Accumulated Amortization (millions) Dominion Energy Software, licenses and other (1) $ 1,723 $ 927 $ 1,324 $ 612 Virginia Power Software, licenses and other (1) $ 1,113 $ 577 $ 685 $ 290 (1) Includes $ 253 million and $ 158 million of RGGI allowances purchased and consumed in 2022 and 2021, respectively, with deferral to a regulatory asset. Annual amortization expense for these intangible assets is estimated to be as follows: 2023 2024 2025 2026 2027 (millions) Dominion Energy $ 68 $ 61 $ 54 $ 43 $ 25 Virginia Power $ 33 $ 30 $ 26 $ 20 $ 10

Regulatory Assets and Liabiliti

Regulatory Assets and Liabilities	12 Months Ended
	Dec. 31, 2022
Regulated Operations [Abstract]
Regulatory Assets and Liabilities	NOTE 12. REGULATORY ASSETS AND LIABILITIES Regulatory assets and liabilities include the following: Dominion Energy Virginia Power At December 31, 2022 2021 2022 2021 (millions) Dominion Energy Regulatory assets: Deferred cost of fuel used in electric generation (1) $ 603 $ 251 $ 133 $ 131 Deferred rider costs for Virginia electric utility (2) 152 72 152 72 Ashpond and landfill closure costs (3) 221 193 221 193 Deferred nuclear refueling outage costs (4) 83 79 83 79 NND Project costs (5) 138 138 Deferred early plant retirement charges (6) 226 226 226 226 Derivatives (7) 256 112 251 105 Other 204 152 74 44 Regulatory assets-current 1,883 1,223 1,140 850 Unrecognized pension and other postretirement benefit costs (8) 891 488 4 3 Deferred rider costs for Virginia electric utility (2) 363 489 363 489 Interest rate hedges (9) 169 899 — 604 AROs and related funding (10) 380 311 NND Project costs (5) 2,088 2,226 Ash pond and landfill closure costs (3) 2,051 2,223 2,049 2,223 Deferred cost of fuel used in electric generation (1) 1,551 409 1,551 409 Deferred early plant retirement charges (6) — 226 — 226 Derivatives (7) 254 34 148 34 Other 518 581 132 142 Regulatory assets-noncurrent 8,265 7,886 4,247 4,130 Total regulatory assets $ 10,148 $ 9,109 $ 5,387 $ 4,980 Regulatory liabilities: Provision for future cost of removal and AROs (11) 111 154 111 154 Reserve for refunds and rate credits to electric utility (12) 125 420 25 306 Income taxes refundable through future rates (13) 100 106 65 63 Monetization of guarantee settlement (14) 67 67 Derivatives (7) 211 65 176 51 Other 134 77 129 73 Regulatory liabilities-current 748 889 506 647 Income taxes refundable through future rates (13) 3,169 3,304 2,272 2,335 Provision for future cost of removal and AROs (11) 1,731 1,624 1,135 1,043 Nuclear decommissioning trust (15) 1,685 2,158 1,685 2,158 Monetization of guarantee settlement (14) 702 831 Interest rate hedges (9) 240 — 240 — Reserve for refunds and rate credits to electric utility (12) 325 448 — 25 Unrecognized pension and other postretirement benefit costs (8) 10 189 Overrecovered other postretirement benefit costs (16) 140 105 Derivatives (7) 234 236 — 62 Other 181 129 167 117 Regulatory liabilities-noncurrent 8,417 9,024 5,499 5,740 Total regulatory liabilities $ 9,165 $ 9,913 $ 6,005 $ 6,387 (1) Reflects deferred fuel expenses for the Virginia and North Carolina jurisdictions of Virginia Power's electric generation operations and additionally for Dominion Energy, deferred fuel expenses for the South Carolina jurisdiction of its electric generation operations. Dominion Energy reflects a $66 million reduction recorded in 2022 from the application of a portion of the monetization of guarantee settlement previously reflected as regulatory liabilities associated with the approval of DESC’s cost of fuel proceedings. See Note 13 for additional information. (2) Reflects deferrals under Virginia Power’s electric transmission FERC formula rate and the deferral of costs associated with certain current and prospective rider projects. See Note 13 for additional information. (3) Primarily reflects legislation in Virginia which requires any CCR asset located at certain Virginia Power stations to be closed by removing the CCR to an approved landfill or through beneficial reuse. These deferred costs are expected to be collected over a period between 15 and 18 years commencing December 2021 through Rider CCR. Virginia Power is entitled to collect carrying costs on uncollected expenditures once expenditures have been made. (4) Legislation in Virginia requires Virginia Power to defer operation and maintenance costs incurred in connection with the refueling of any nuclear-powered generating plant. These deferred costs will be amortized over the refueling cycle, not to exceed 18 months . (5) Reflects expenditures by DESC associated with the NND Project, which pursuant to the SCANA Merger Approval Order, will be recovered from DESC electric service customers over a 20-year period ending in 2039. (6) Reflects amounts from the early retirements of certain coal- and oil-fired generating units to be amortized through 2023 in accordance with the settlement of the 2021 Triennial Review. See Note 13 for additional information. (7) Represents changes in the fair value of derivatives, excluding separately presented interest rate hedges, that following settlement are expected to be recovered from or refunded to customers. (8) Represents unrecognized pension and other postretirement employee benefit costs expected to be recovered or refunded through future rates generally over the expected remaining service period of plan participants by certain of Dominion Energy's rate-regulated subsidiaries. Includes regulatory assets of $ 302 million and $ 25 million and regulatory liabilities of $ 6 million and $ 20 million in aggregate at December 31, 2022 and 2021, respectively, related to retained pension and other postretirement benefit plan assets and obligations for the East Ohio, PSNC and Questar Gas Transactions which will be reclassified to AOCI upon closing of each transaction. (9) Reflects interest rate hedges recoverable from or refundable to customers. Certain of these instruments are settled and any related payments are being amortized into interest expense over the life of the related debt, which has a weighted-average useful life of approximately 25 years and 24 years for Dominion Energy and Virginia Power, respectively, as of December 31, 2022. (10) Represents deferred depreciation and accretion expense related to legal obligations associated with the future retirement of generation, transmission and distribution properties. The AROs primarily relate to DESC’s electric generating facilities, including Summer, and are expected to be recovered over the related property lives and periods of decommissioning which may range up to approximately 105 years . (11) Rates charged to customers by Dominion Energy and Virginia Power's regulated businesses include a provision for the cost of future activities to remove assets that are expected to be incurred at the time of retirement. (12) Reflects amounts previously collected from retail electric customers of DESC for the NND Project to be credited over an estimated 11-year period effective February 2019, in connection with the SCANA Merger Approval Order. Also reflects amounts to be refunded to jurisdictional retail electric customers in Virginia associated with the settlement of the 2021 Triennial Review. See Note 13 for additional information. (13) Amounts recorded to pass the effect of reduced income taxes from the 2017 Tax Reform Act to customers in future periods, which will primarily reverse at the weighted average tax rate that was used to build the reserves over the remaining book life of the property, net of amounts to be recovered through future rates to pay income taxes that become payable when rate revenue is provided to recover AFUDC equity. (14) R eflects amounts to be refunded to DESC electric service customers over a 20-year period ending in 2039 associated with the monetization of a bankruptcy settlement agreement. (15) Primarily reflects a regulatory liability representing amounts collected from Virginia jurisdictional customers and placed in external trusts (including income, losses and changes in fair value thereon, as applicable) for the future decommissioning of Virginia Power's utility nuclear generation stations, in excess of the related AROs. (16) Reflects a regulatory liability for the collection of postretirement benefit costs allowed in rates in excess of expense incurred. At December 31, 2022, Dominion Energy and Virginia Power regulatory assets include $ 4.4 billion and $ 2.7 billion, respectively, on which they do not expect to earn a return during the applicable recovery period. With the exception of certain items discussed above, the majority of these expenditures are expected to be recovered within the next two years .

Regulatory Matters

Regulatory Matters	12 Months Ended
	Dec. 31, 2022
Regulated Operations [Abstract]
Regulatory Matters	NOTE 13. REGULATORY MATTERS Regulatory Matters Involving Potential Loss Contingencies As a result of issues generated in the ordinary course of business, the Companies are involved in various regulatory matters. Certain regulatory matters may ultimately result in a loss; however, as such matters are in an initial procedural phase, involve uncertainty as to the outcome of pending reviews or orders, and/or involve significant factual issues that need to be resolved, it is not possible for the Companies to estimate a range of possible loss. For regulatory matters that the Companies cannot estimate, a statement to this effect is made in the description of the matter. Other matters may have progressed sufficiently through the regulatory process such that the Companies are able to estimate a range of possible loss. For regulatory matters that the Companies are able to reasonably estimate a range of possible losses, an estimated range of possible loss is provided, in excess of the accrued liability (if any) for such matters. Any estimated range is based on currently available information, involves elements of judgment and significant uncertainties and may not represent the Companies’ maximum possible loss exposure. The circumstances of such regulatory matters will change from time to time and actual results may vary significantly from the current estimate. For current matters not specifically reported below, management does not anticipate that the outcome from such matters would have a material effect on the Companies’ financial position, liquidity or results of operations. Other Regulatory Matters Virginia Regulation – Key Legislation Affecting Operations Regulation Act and Grid Transformation and Security Act of 2018 The Regulation Act enacted in 2007 instituted a cost-of-service rate model, ending Virginia’s planned transition to retail competition for electric supply service to most classes of customers. The Regulation Act authorizes stand-alone rate adjustment clauses for recovery of costs for new generation projects, FERC-approved transmission costs, underground distribution lines, environmental compliance, conservation and energy efficiency programs, renewable energy programs and nuclear license renewals, and also contains statutory provisions directing Virginia Power to file annual fuel cost recovery cases with the Virginia Commission. If the Virginia Commission’s future rate decisions, including actions relating to Virginia Power’s rate adjustment clause filings, differ materially from Virginia Power’s expectations, it may adversely affect its results of operations, financial condition and cash flows. The GTSA reinstated base rate reviews commencing with the 2021 Triennial Review. In the triennial review proceedings, earnings that are more than 70 basis points above the utility’s authorized ROE that might have been refunded to customers and served as the basis for a reduction in future rates, may be reduced by Virginia Commission-approved investment amounts in qualifying solar or wind generation facilities or electric distribution grid transformation projects that Virginia Power elects to include in a CCRO. The legislation declares that electric distribution grid transformation projects are in the public interest and provides that the costs of such projects may be recovered through a rate adjustment clause if not the subject of a CCRO. Any costs that are the subject of a CCRO are deemed recovered in base rates during the triennial period under review and may not be included in base rates in future triennial review proceedings. In any triennial review in which the Virginia Commission determines that the utility’s earnings are more than 70 basis points above its authorized ROE, base rates are subject to reduction prospectively and customer refunds would be due unless the total CCRO elected by the utility equals or exceeds the amount of earnings in excess of the 70 basis points. For the purposes of measuring any customer refunds or CCRO amounts utilized under the GTSA, associated income taxes are factored into the determination of such amounts. In the 2021 Triennial Review, any such rate reduction was limited to $ 50 million. Virginia 2020 Legislation In April 2020, the Governor of Virginia signed into law the VCEA, which along with related legislation forms a comprehensive framework affecting Virginia Power’s operations. The VCEA replaces Virginia’s voluntary renewable energy portfolio standard for Virginia Power with a mandatory program setting annual renewable energy portfolio standard requirements based on the percentage of total electric energy sold by Virginia Power, excluding existing nuclear generation and certain new carbon-free resources, reaching 100 % by the end of 2045. The VCEA includes related requirements concerning deployment of wind, solar and energy storage resources, as well as provides for certain measures to increase net-metering, including an allocation for low-income customers, incentivizes energy efficiency programs and provides for cost recovery related to participation in a carbon trading program. While the legislation affects several portions of Virginia Power’s operations, key provisions of the GTSA remain in effect, including the triennial review structure and timing, the use of the CCRO and the $ 50 million cap on revenue reductions in the first triennial review proceeding. Key provisions of the VCEA and related legislation passed include the following: • Fossil Fuel Electric Generation : The legislation mandates Chesterfield Power Station Units 5 & 6 and Yorktown Power Station Unit 3 to be retired by the end of 2024, Altavista, Southampton and Hopewell to be retired by the end of 2028 and Virginia Power’s remaining fossil fuel units to be retired by the end of 2045, unless the retirement of such generating units will compromise grid reliability or security. The legislation also imposed a temporary moratorium on CPCNs for fossil fuel generation, unless the resources are needed for grid reliability. This temporary moratorium concluded in January 2022. In addition, the Virginia Commission shall determine the amortization period for recovery of any appropriate costs due to the early retirement of any electric generation facilities. Virginia Power also revised the depreciable lives of Altavista, Southampton and Hopewell for the mandated retirement to the end of 2028, which will not have a material impact to Virginia Power’s results of operations or cash flows given the existing regulatory framework. • Renewable Generation: The legislation provides a detailed renewable energy portfolio standard to achieve 100% zero-carbon generation by the end of 2045, excluding existing nuclear generation and certain new carbon-free resources. Components include requirements to petition the Virginia Commission for approval to construct or acquire new generating capacity to reach 16.1 GW of installed solar and onshore wind by the end of 2035, which includes specific requirements for utility-scale solar of 3.0 GW by the end of 2024, up to 15.0 GW by the end of 2035 and 1.1 GW of small-scale solar by the end of 2035. The legislation deems 2.7 GW of energy storage, including up to 800 MW for any one project which may include a pumped storage facility, by the end of 2035 to be in the public interest. The legislation also deems the construction or purchase of an offshore wind facility constructed off the Virginia coast with a capacity of up to 5.2 GW before 2035 to be in the public interest and provides certain presumptions facilitating cost recovery. The costs of such a facility constructed by the utility with a capacity between 2.5 and 3.0 GW will be presumed reasonably and prudently incurred if the Virginia Commission finds that the project meets competitive procurement requirements, the projected cost of the facility does not exceed a specified industry benchmark and the utility commences construction by the end of 2023 or has a plan for the facility to be in service by the end of 2027. Projects to meet these requirements are subject to approval by the Virginia Commission. • Energy Efficiency: The legislation includes an energy efficiency target of 5 % energy savings, as measured from a 2019 baseline, through verifiable energy efficiency programs by the end of 2025 with future targets to be set by the Virginia Commission. Virginia Power has the opportunity to offset the lost revenues with margins on program spend if certain targets are achieved and can also seek recovery of the lost revenues associated with energy efficiency programs if such reductions are found to have caused Virginia Power to earn more than 50 basis points below a fair rate of return on its rates for generation and distribution services. • Carbon trading program : The legislation authorizes Virginia to participate in a market-based carbon trading program consistent with RGGI through 2050. In January 2022, the Governor of Virginia issued an executive order which puts directives in place to start the withdrawal of Virginia from RGGI. All costs of the carbon trading program are recoverable through an environmental rider. • Low-income customers : The legislation includes the establishment of a percentage of income payment program to be administered by the Virginia Department of Housing and Community Development and the Virginia Department of Social Services. To fund the program, Virginia Power will remit amounts collected from customers under a universal service fee established and set by the Virginia Commission. As such, this program will not affect Virginia Power’s results of operations, financial position or cash flows. In December 2020, the Virginia Commission issued a final order confirming a revenue requirement of $ 93 million related to this program. Implementation details and the effective date of the program will be established in future legislation prior to collection of fees from customers. Virginia Power is incurring and expects to incur significant costs, including capital expenditures, to comply with the legislative requirements discussed above. The legislation allows for cost recovery under the existing or modified regulatory framework through rate adjustment clauses, rates for generation and distribution services or Virginia Power’s fuel factor, as approved by the Virginia Commission. Costs allocated to the North Carolina jurisdiction will be recovered, subject to approval by the North Carolina Commission, in accordance with the existing regulatory framework. Virginia Regulation – Recent Developments 2021 Triennial Review In 2020, Virginia Power recorded a net charge of $ 130 million related to the use of a CCRO in accordance with the GTSA, included in impairment of assets and other charges (benefits) in its Consolidated Statements of Income (reflected in the Corporate and Other segment) for benefits expected to be provided to jurisdictional customers as a result of the 2021 Triennial Review as well as the impact on certain non-jurisdictional customers which follow Virginia Power’s jurisdictional customer rate methodology. In 2021, Virginia Power recorded a benefit of $ 130 million ($ 97 million after-tax) in impairment of assets and other charges (benefits) in its Consolidated Statements of Income (reflected in the Corporate and Other segment) to adjust its reserve related to the use of a CCRO in accordance with the GTSA. Subsequently, in October 2021, Virginia Power, the Virginia Commission staff and other parties filed a comprehensive settlement agreement with the Virginia Commission for approval. The comprehensive settlement agreement provides for $ 330 million in one-time refunds to customers made up of $ 255 million over a 6-month period and $ 75 million over three years, a $ 50 million going-forward base rate reduction and an authorized ROE of 9.35 %. Additionally, Virginia Power has agreed to utilize $ 309 million of qualifying CCRO investments in the CVOW Pilot Project, deployment of AMI and a Customer Information Platform to offset available earnings and to amortize through 2023 the early retirement charges for coal- and oil-fired generation units recorded in 2019 and 2020. In November 2021, the Virginia Commission approved the comprehensive settlement agreement. In connection with the settlement agreement, Virginia Power recorded a $ 356 million ($ 265 million after-tax) charge for refunds to be provided to customers in operating revenues in its Consolidated Statements of Income as well as a $ 549 million ($ 409 million after-tax) benefit primarily from the establishment of a regulatory asset associated with the early retirements of certain coal- and oil-fired generating units and a $ 318 million ($ 237 million after-tax) charge for CCRO benefits provided to customers in impairment of assets and other charges (benefits) in its Consolidated Statements of Income (reflected in the Corporate and Other segment). The amounts recorded reflect the impact related to jurisdictional customers as a result of the 2021 Triennial Review as well as the impact on certain non-jurisdictional customers which follow Virginia Power’s jurisdictional customer rate methodology. Utility Disconnection Moratorium In November 2020, legislation was enacted in Virginia relating to the moratorium on utility disconnections during the COVID-19 pandemic and resulted in Virginia Power forgiving Virginia jurisdictional retail electric customer balances that were more than 30 days past due as of September 30, 2020. As a result, Virginia Power recorded a charge of $ 127 million ($ 94 million after-tax) in impairment of assets and other charges in its Consolidated Statements of Income (reflected in the Corporate and Other segment) in 2020. In connection with the Virginia 2021 budget process, in the first quarter of 2021 Virginia Power recorded a charge of $ 76 million ($ 56 million after-tax) in impairment of assets and other charges (benefits) in its Consolidated Statements of Income (reflected in the Corporate and Other segment) for Virginia jurisdictional retail electric customer balances that were more than 30 days past due as of December 31, 2020 that Virginia Power is required to forgive. Virginia Fuel Expenses In May 2022, Virginia Power filed its annual fuel factor filing with the Virginia Commission to recover an estimated $ 2.3 billion in Virginia jurisdictional projected fuel expense for the rate year beginning July 1, 2022 and a projected $ 1.0 billion under-recovered balance as of June 30, 2022. Virginia Power’s proposed fuel rate represents a fuel revenue increase of $ 1.8 billion when applied to projected kilowatt-hour sales for that period. Virginia Power also proposed alternatives to recover this under-collected balance over a two- or three-year period. Under these alternatives, Virginia Power’s fuel revenues for the rate year would increase by $ 1.3 billion or $ 1.2 billion, respectively. In addition, Virginia Power proposed a change in the timing of fuel cost recovery for certain customers who elect market-based rates that would consider those customers’ portion of the projected under-recovered balance to have been recovered as of June 30, 2022. In July 2022, Virginia Power, the Virginia Commission staff and another party filed a comprehensive settlement agreement with the Virginia Commission for approval. The comprehensive settlement agreement provides for the collection of the requested under-recovered projected fuel expense over a three-year period beginning July 1, 2022 and that Virginia Power will exclude from recovery through base rates one half of the related financing costs over the three-year period. In addition, the proposed settlement agreement affirmed Virginia Power’s proposal regarding fuel cost recovery for market-based rate customers. As a result, Virginia Power recorded a $ 191 million ($ 142 million after-tax) charge in the second quarter of 2022 within impairment of assets and other charges in its Consolidated Statement of Income (reflected in the Corporate and Other segment). In September 2022, the Virginia Commission approved the comprehensive settlement agreement. Renewable Generation Projects – Construction In September 2021, Virginia Power filed a petition with the Virginia Commission for CPCNs to construct and operate 13 utility-scale projects totaling approximately 661 MW of solar generation and 70 MW of energy storage as part of its efforts to meet the renewable generation development requirements under the VCEA. The projects are expected to cost approximately $ 1.4 billion in the aggregate, excluding financing costs, and be placed into service between 2022 and 2023. In March 2022, the Virginia Commission approved the petition. In November 2021, Virginia Power filed an application with the Virginia Commission requesting approval and certification of the Virginia Facilities component of the CVOW Commercial Project. The onshore Virginia Facilities have an estimated cost of approximately $ 1.1 billion, excluding financing costs, which is included within the overall cost of the CVOW Commercial Project. In addition, Virginia Power requested approval from the Virginia Commission to enter into financial hedges with U.S. financial institutions to mitigate the foreign currency exchange risk associated with certain supplier contracts associated with the CVOW Commercial Project. In August 2022, the Virginia Commission approved the application for certification of the Virginia Facilities component of the CVOW Commercial Project and noted that no further action was required with respect to Virginia Power’s foreign currency risk mitigation plan. Also in August 2022, Virginia Power filed a petition for limited reconsideration relating to the performance standard for operation of the CVOW Commercial Project included in the Virginia Commission’s August order. The Virginia Commission granted reconsideration and suspended in part the August order pending its reconsideration. In October 2022, Virginia Power, Office of the Attorney General of Virginia and other parties filed a settlement agreement with the Virginia Commission for approval. The settlement agreement provides for certain cost sharing mechanisms of total construction costs between $ 10.3 billion and $ 13.7 billion, as subject to potential adjustment to the extent construction costs are decreased by the IRA, and includes enhanced performance reporting provisions associated with operation of the CVOW Commercial Project in lieu of a performance guarantee. In December 2022, the Virginia Commission approved the settlement agreement. In October 2022, Virginia Power filed a petition with the Virginia Commission for CPCNs to construct and operate eight utility-scale projects totaling approximately 474 MW of solar generation and 16 MW of energy storage as part of its efforts to meet the renewable generation development requirements under the VCEA. The projects, as of October 2022, are expected to cost approximately $ 1.2 billion in the aggregate, excluding financing costs, and be placed into service between 2024 through 2025. This matter is pending. Nuclear Life Extension Program In October 2021, Virginia Power filed a petition with the Virginia Commission requesting a determination that it is reasonable and prudent for Virginia Power to pursue a nuclear life extension program to extend the operating licenses of Surry and North Anna and to carry out projects to upgrade or replace systems and equipment necessary to continue to safely and reliably operate these nuclear power stations. The nuclear life extension program is expected to cost approximately $ 3.9 billion, excluding financing costs. In July 2022, the Virginia Commission approved the petition. Riders Significant riders associated with various Virginia Power projects are as follows: Rider Name Application Date Approval Date Rate Year Total Revenue Requirement (millions) Increase (Decrease) Over Previous Year (millions) Rider B June 2022 January 2023 April 2023 34 $ 18 Rider B June 2022 January 2023 April 2024 34 — Rider BW October 2021 May 2022 September 2022 145 32 Rider BW October 2021 May 2022 September 2023 120 ( 25 ) Rider CCR February 2022 October 2022 December 2022 231 15 Rider CE (1) September 2021 March 2022 May 2022 71 61 Rider CE (2) October 2022 Pending May 2023 89 18 Rider E January 2022 September 2022 November 2022 101 34 Rider E January 2023 Pending November 2023 109 8 Rider GT August 2021 May 2022 June 2022 56 N/A Rider GT August 2022 Pending June 2023 16 ( 40 ) Rider GV June 2021 December 2021 April 2023 127 ( 15 ) Rider OSW November 2021 August 2022 (3) September 2022 79 N/A Rider OSW November 2022 Pending September 2023 271 192 Rider PPA December 2022 Pending September 2023 ( 22 ) ( 17 ) Rider R June 2021 March 2022 April 2022 59 1 Rider R June 2021 March 2022 April 2023 55 ( 4 ) Rider RGGI (4) December 2021 Withdrawn Rider RGGI (5) December 2022 Pending September 2023 373 N/A Rider RPS December 2021 June 2022 September 2022 140 127 Rider RPS December 2022 Pending September 2023 111 ( 29 ) Rider S June 2021 February 2022 April 2023 191 ( 1 ) Rider SNA (6) October 2021 July 2022 September 2022 107 N/A Rider SNA (6) October 2022 Pending September 2023 50 ( 57 ) Rider T1 (7) May 2022 July 2022 September 2022 706 ( 168 ) Rider U (8) June 2021 March 2022 April 2022 95 15 Rider U (9) June 2022 Pending April 2023 74 ( 21 ) Rider US-2 October 2021 June 2022 September 2022 11 2 Rider US-3 August 2021 March 2022 June 2022 50 12 Rider US-3 August 2022 Pending June 2023 40 ( 10 ) Rider US-4 August 2021 March 2022 June 2022 15 5 Rider US-4 August 2022 Pending June 2023 17 2 Rider W June 2022 Pending April 2023 106 ( 15 ) Rider W June 2022 Pending April 2024 109 3 DSM Riders (10) December 2021 August 2022 September 2022 91 17 DSM Riders (11) December 2022 Pending September 2023 107 16 (1) Associated with solar generation and energy storage projects approved in March 2022, solar generation projects approved in April 2021 and certain small-scale solar projects. (2) Associated with solar generation and energy storage projects requested for approval in October 2022 and certain small-scale solar projects in addition to previously approved Rider CE projects. (3) In August 2022, Virginia Power filed a petition for limited reconsideration relating to a performance standard for operation of the CVOW Commercial Project included in the Virginia Commission’s August order. The Virginia Commission granted reconsideration and suspended in part the August order pending its reconsideration with Rider OSW approved on an interim basis. In December 2022, the Virginia Commission issued an order reinstating its August 2022 order granting approval of Rider OSW. (4) In January 2022, Virginia Power filed a motion to withdraw its application as a result of the announcement by the Governor of Virginia that he intends to withdraw Virginia from RGGI. The Virginia Commission granted Virginia Power’s motion in April 2022. In May 2022, Virginia Power filed a petition with the Virginia Commission requesting a suspension of Rider RGGI approved in August 2021. Virginia Power also requested that RGGI compliance costs incurred and unrecovered through July 2022 be recovered through existing base rates in effect during the period incurred. The Virginia Commission approved the request in June 2022. In the second quarter of 2022, Virginia Power recorded a charge of $ 180 million ($ 134 million after-tax) in impairment of assets and other charges (reflected in the Corporate and Other segment) for the amount deemed recovered through base rates through June 30, 2022, including the impact of certain non-jurisdictional customers which follow Virginia Power’s jurisdictional rate methodology. Virginia Power recorded $ 33 million ($ 25 million after-tax) in depreciation and amortization in the third quarter of 2022. (5) In December 2022, Virginia Power filed a petition to update and reinstate Rider RGGI to recover RGGI compliance costs incurred after July 2022 and those projected to occur through December 2023, with rate recovery from September 2023 through August 2024. For purposes of this proceeding, Virginia Power has assumed that Virginia will withdraw from RGGI on December 31, 2023, and accordingly did not project any RGGI compliance costs to be incurred after that date. (6) Virginia Power also requested approval of cost recovery of approximately $ 1.2 billion through Rider SNA for the first phase of nuclear life extension program which includes investments through 2024. In April 2022, Virginia Power, the Virginia Commission staff and certain interested parties filed a proposed stipulation recommending that costs incurred after February 2022 associated with the first phase of the nuclear life extension program for North Anna be deferred and requested for recovery in a subsequent Rider SNA filing. (7) Consists of $ 482 million for the transmission component of Virginia Power’s base rates and $ 224 million for Rider T1. (8) Consists of $ 60 million for previously approved phases and $ 35 million for phase six costs for Rider U. (9) As amended in June 2022, application consists of $ 74 million for previously approved phases of Rider U. (10) Associated with an additional nine new energy efficiency programs with a $ 140 million cost cap, with the ability to exceed the cost cap by no more than 15 %. (11) Associated with an additional four new energy efficiency programs, one new demand response program and four new program bundles with a $ 150 million cost cap, with the ability to exceed the cost cap by no more than 15 %. Electric Transmission Projects Significant Virginia Power electric transmission projects approved or applied for are as follows: Description and Location Application Approval Type of Miles of Cost Estimate Elmont-Ladysmith rebuild and related projects in the April 2021 April 2022 500 kV 26 $ 95 Rebuild transmission lines and related projects in the November 2021 August 2022 230 kV 21 45 Build new Dulles Towne Center substation and line December 2021 July 2022 230 kV 1 105 Build new Aviator substation and line loop in the February 2022 November 2022 230 kV 1 80 Nimbus line loop and substation and new 230 kV line February 2022 October 2022 230 kV 1 40 Partial rebuild of Bristers-Ox 115 kV line in Fauquier August 2022 Pending 115 kV 15 40 Construct new switching station, substations, October 2022 Pending 230 kV 18 230 Construct new switching station, substation, October 2022 Pending 230 kV 26 215 Construct new Mars and Wishing Star substations, October 2022 Pending 500/230 kV 4 720 Construct new Altair switching station, November 2022 Pending 230 kV 2 50 Construct new Cirrus and Keyser switching stations, November 2022 Pending 230 kV 5 65 In November 2013, the Virginia Commission issued an order granting Virginia Power a CPCN to construct approximately 7 miles of new overhead 500 kV transmission line from the existing Surry switching station in Surry County to a new Skiffes Creek switching station in James City County, and approximately 20 miles of new 230 kV transmission line in James City County, York County, and the City of Newport News from the proposed new Skiffes Creek switching station to Virginia Power’s existing Whealton substation in the City of Hampton. In February 2019, the transmission line project was placed into service. In March 2019, the U.S. Court of Appeals for the D.C. Circuit issued an order vacating the permit from the U.S. Army Corps of Engineers issued in July 2017 and ordered the U.S. Army Corps of Engineers to do a full environmental impact study of the project. In April 2019, Virginia Power and the U.S. Army Corps of Engineers filed petitions for rehearing with the U.S. Court of Appeals for the D.C. Circuit, asking that the permit from the U.S. Army Corps of Engineers remain in effect while an environmental impact study is performed. In May 2019, the U.S. Court of Appeals for the D.C. Circuit denied the request for rehearing and ordered the U.S. District Court for the D.C. Circuit to consider and issue a ruling on whether the permit should be vacated during the U.S. Army Corps of Engineers’ preparation of an environmental impact statement. In November 2019, the U.S. District Court for the D.C. Circuit issued an order allowing the permit to remain in effect while an environmental impact statement is prepared. In November 2020, the U.S. Army Corps of Engineers issued a draft environmental impact statement noting there is no better alternative. This matter is pending. North Carolina Regulation Virginia Power North Carolina Base Rate Case In March 2019, Virginia Power filed its base rate case and schedules with the North Carolina Commission. In January 2020, the North Carolina Commission approved a 9.75 % ROE and disallowed certain costs associated with coal ash remediation at Chesterfield power station. In February 2020, the North Carolina Commission issued its final order relating to base rates. In July 2020, Virginia Power filed a notice of appeal and exceptions to the Supreme Court of North Carolina, arguing that the North Carolina Commission committed reversible error on certain issues relating to the ratemaking treatment of certain coal ash remediation costs. In June 2022, the Supreme Court of North Carolina affirmed the North Carolina Commission’s order. Virginia Power North Carolina Fuel Filing In August 2022, Virginia Power submitted its annual filing to the North Carolina Commission to adjust the fuel component of its electric rates. Virginia Power updated its filing in October 2022 to reflect the increased commodity cost of fuel and proposed a total $ 107 million increase to the fuel component of its electric rates for the rate year beginning February 1, 2023. Virginia Power also submitted an alternative to recover the increase over a two-year period. Under this approach, Virginia Power proposed a total $ 80 million increase to the fuel component of its electric rates implemented on a staggered timeline for the rate year beginning February 1, 2023 with remaining unrecovered balances to be recovered in the rate year beginning February 1, 2024. In January 2023, the North Carolina Commission approved the filing for recovery over the two-year period. PSNC Rider D Rider D allows PSNC to recover from customers all prudently incurred gas costs and the related portion of uncollectible expenses as well as losses on negotiated gas and transportation sales. In May 2022, PSNC submitted a filing with, and received approval from, the North Carolina Commission for a $ 56 million gas cost increase with rates effective June 2022. In September 2022, PSNC submitted a filing with, and received approval from, the North Carolina Commission for a $ 126 million gas cost increase with rates effective October 2022. In November 2022, PSNC submitted a filing with, and received approval from, the North Carolina Commission for a net $ 41 million gas cost decrease with rates effective December 2022. In January 2023, PSNC submitted a filing with, and received approval from, the North Carolina Commission for a $ 154 million gas cost decrease with rates effective February 2023. In February 2023, PSNC submitted a filing with the North Carolina Commission for a $ 56 million gas cost decrease with rates effective March 2023. This matter is pending. PSNC Customer Usage Tracker PSNC utilizes a customer usage tracker, a decoupling mechanism, which allows it to adjust its base rates semi-annually for residential and commercial customers based on average per customer consumption. In September 2022, PSNC submitted a filing with the North Carolina Commission for a $ 46 million increase relating to the customer usage tracker. The North Carolina Commission approved the filing in September 2022 with rates effective October 2022. South Carolina Regulation South Carolina Electric Base Rate Case In August 2020, DESC filed its retail electric base rate case and schedules with the South Carolina Commission. In July 2021, DESC, the South Carolina Office of Regulatory Staff and other parties of record filed a comprehensive settlement agreement with the South Carolina Commission for approval. The comprehensive settlement agreement provided for a non-fuel, base rate increase of $ 62 million (resulting in a net increase of $ 36 million after considering an accelerated amortization of certain excess deferred income taxes) commencing with bills issued on September 1, 2021 and an authorized earned ROE of 9.50 %. Additionally, DESC agreed to commit up to $ 15 million to forgive retail electric customer balances that were more than 60 days past due as of May 31, 2021 and provide $ 15 million f

Asset Retirement Obligations

Asset Retirement Obligations	12 Months Ended
	Dec. 31, 2022
Asset Retirement Obligation Disclosure [Abstract]
Asset Retirement Obligations	NOTE 14. ASSET RETIREMENT OBLIGATIONS AROs represent obligations that result from laws, statutes, contracts and regulations related to the eventual retirement of certain of the Companies’ long-lived assets. The Companies AROs are primarily associated with the decommissioning of their nuclear generation facilities and ash pond and landfill closures. The Companies have also identified, but not recognized, AROs related to the retirement of Dominion Energy’s storage wells in its underground natural gas storage network, certain Virginia Power electric transmission and distribution assets located on property with easements, rights of way, franchises and lease agreements, Virginia Power’s hydroelectric generation facilities and the abatement of certain asbestos not expected to be disturbed in the Companies’ generation facilities. The Companies currently do not have sufficient information to estimate a reasonable range of expected retirement dates for any of these assets since the economic lives of these assets can be extended indefinitely through regular repair and maintenance and they currently have no plans to retire or dispose of any of these assets. As a result, a settlement date is not determinable for these assets and AROs for these assets will not be reflected in the Consolidated Financial Statements until sufficient information becomes available to determine a reasonable estimate of the fair value of the activities to be performed. The Companies continue to monitor operational and strategic developments to identify if sufficient information exists to reasonably estimate a retirement date for these assets. The changes to AROs during 2021 and 2022 were as follows: (millions) Dominion Energy Virginia Power AROs at December 31, 2020 $ 5,221 $ 3,820 Obligations incurred during the period 28 26 Obligations settled during the period ( 155 ) ( 131 ) Revisions in estimated cash flows (1) 80 67 Accretion 208 141 Sale of non-wholly-owned nonregulated solar facilities ( 49 ) AROs at December 31, 2021 (2) $ 5,333 $ 3,923 Obligations incurred during the period 138 132 Obligations settled during the period ( 125 ) ( 155 ) Revisions in estimated cash flows (3) 46 48 Accretion 210 145 Sales of Kewaunee and Hope ( 175 ) AROs at December 31, 2022 (2) $ 5,427 $ 4,093 (1) Reflects revisions to future ash pond and landfill closure costs at certain utility generation facilities, and additionally for Dominion Energy estimated cash flow projections associated with the recovery of spent nuclear fuel costs for its AROs associated with the decommissioning of Kewaunee and estimated cash flow projections associated with DESC's gas distribution pipelines. For Dominion Energy, these revisions in 2021 resulted in a charge of $ 44 million ($ 35 million after-tax) within other operations and maintenance expense in the Consolidated Statements of Income as well as a $ 25 million decrease to property, plant and equipment, net. (2) Includes $ 196 million and $ 365 million reported in other current liabilities for Dominion Energy at December 31, 2021 and 2022, respectively. (3) Primarily reflects revisions to asbestos abatement costs associated with the early retirement of certain retired electric generation facilities. Dominion Energy’s AROs at December 31, 2022 and 2021, include $ 1.9 billion and $ 2.0 billion, respectively, with $ 0.9 billion and $ 0.9 billion recorded by Virginia Power, related to the future decommissioning of their nuclear facilities. The Companies have established trusts dedicated to funding the future decommissioning activities. At December 31, 2022 and 2021, the aggregate fair value of Dominion Energy’s trusts, consisting primarily of equity and debt securities, totaled $ 6.0 billion and $ 8.0 billion, respectively. At December 31, 2022 and 2021, the aggregate fair value of Virginia Power’s trusts, consisting primarily of debt and equity securities, totaled $ 3.2 billion and $ 3.7 billion, respectively. In addition, AROs at December 31, 2022 and 2021 include $ 2.8 billion and $ 2.9 billion, respectively, related to Virginia Power’s future ash pond and landfill closure costs. Regulatory mechanisms, primarily associated with legislation enacted in Virginia in 2019, provide for recovery of costs to be incurred. See Note 12 for additional information.

Leases

Leases	12 Months Ended
	Dec. 31, 2022
Leases [Abstract]
Leases	NOTE 15. LEASES At December 31, 2022 and 2021, the Companies had the following lease assets and liabilities recorded in the Consolidated Balance Sheets: Dominion Energy Virginia Power At December 31, 2022 2021 2022 2021 (millions) Lease assets: Operating lease assets (1) $ 415 $ 506 $ 294 $ 256 Finance lease assets (2) 144 144 82 71 Total lease assets $ 559 $ 650 $ 376 $ 327 Lease liabilities: Operating lease liabilities (3) $ 39 $ 44 $ 21 $ 25 Finance lease liabilities (4) 46 36 17 13 Total lease liabilities - current 85 80 38 38 Operating lease liabilities (5) 514 464 273 227 Finance lease liabilities (6) 104 112 65 57 Total lease liabilities - noncurrent 618 576 338 284 Total lease liabilities $ 703 $ 656 $ 376 $ 322 (1) Dominion Energy includes $ 394 million and $ 479 million at December 31, 2022 and 2021, respectively, in other deferred charges and other assets, with the remaining balance in noncurrent assets held for sale, in its Consolidated Balance Sheets. Virginia Power's balances are included in other deferred charges and other assets in its Consolidated Balance Sheets. (2) Dominion Energy includes $ 127 million and $ 129 million at December 31, 2022 and 2021, respectively, in property, plant and equipment in its Consolidated Balance Sheets, net of $ 106 million and $ 77 million at December 31, 2022 and 2021, respectively, of accumulated amortization, with the remaining balance in noncurrent assets held for sale. Virginia Power's balances are included in property, plant and equipment in its Consolidated Balance Sheets, net of $ 33 million and $ 18 million at December 31, 2022 and 2021, respectively, of accumulated amortization. (3) Dominion Energy includes $ 34 million and $ 38 million at December 31, 2022 and 2021, respectively, in other current liabilities, with the remaining balance in current liabilities held for sale, in its Consolidated Balance Sheets. Virginia Power's balances are in other current liabilities in its Consolidated Balance Sheets. (4) Dominion Energy includes $ 42 million and $ 33 million at December 31, 2022 and 2021, respectively, in securities due within one year, with the remaining balance in current liabilities held for sale, in its Consolidated Balance Sheets. Virginia Power's balances are included in securities due within one year in its Consolidated Balance Sheets. (5) Dominion Energy includes $ 494 million and $ 439 million at December 31, 2022 and 2021, respectively, in other deferred credits and other liabilities, with the remaining balance in noncurrent liabilities held for sale, in its Consolidated Balance Sheets. Virginia Power's balances are included in other deferred credits and other liabilities in its Consolidated Balance Sheets. (6) Dominion Energy includes $ 91 million and $ 100 million at December 31, 2022 and 2021, respectively, in other long-term debt, with the remaining balance in noncurrent liabilities held for sale, in its Consolidated Balance Sheets. Virginia Power's balances are included in other long-term debt in its Consolidated Balance Sheets. In addition to the amounts disclosed above, Dominion Energy’s Consolidated Balance Sheets at December 31, 2022 and 2021 include property, plant and equipment of $ 183 million and $ 1.2 billion, respectively, related to facilities subject to power purchase agreements under which Dominion Energy is the lessor. Accumulated depreciation related to these facilities was $ 106 million at December 31, 2021. There was no accumulated depreciation related to these facilities recorded in Dominion Energy’s Consolidated Balance Sheets at December 31, 2022. For the years ended December 31, 2022, 2021 and 2020, total lease cost associated with the Companies’ leasing arrangements consisted of the following: Dominion Energy Virginia Power Year ended December 31, 2022 2021 2020 2022 2021 2020 (millions) Finance lease cost: Amortization (1) $ 41 $ 40 $ 33 $ 15 $ 12 $ 7 Interest (2) 3 ( 3 ) — 3 1 1 Operating lease cost (3) 53 66 68 32 $ 30 $ 36 Short-term lease cost (4) 31 32 20 21 19 12 Variable lease cost 4 5 8 1 1 4 Total lease cost $ 132 $ 140 $ 129 $ 72 $ 63 $ 60 (1) Dominion Energy includes $ 3 million, $ 3 million and $ 2 million for the years ended December 31, 2022, 2021 and 2020, respectively, in discontinued operations in its Consolidated Statements of Income. (2) Dominion Energy includes $ 1 million for the year ended December 31, 2022 and less than $ 1 million for the years ended December 31, 2021 and 2020, respectively, in discontinued operations in its Consolidated Statements of Income. (3) Dominion Energy includes $ 6 million, $ 8 million and $ 8 million for the years ended December 31, 2022, 2021 and 2020, respectively, in discontinued operations in its Consolidated Statements of Income. (4) Dominion Energy includes $ 2 million, $ 2 million and $ 1 million for the years ended December 31, 2022, 2021 and 2020, respectively, in discontinued operations in its Consolidated Statements of Income. For the years ended December 31, 2022, 2021 and 2020, cash paid for amounts included in the measurement of the lease liabilities consisted of the following amounts, included in the Companies’ Consolidated Statements of Cash Flows: Dominion Energy Virginia Power Year ended December 31, 2022 2021 2020 2022 2021 2020 (millions) Operating cash flows for $ 3 $ ( 3 ) $ — $ 3 $ 1 $ 1 Operating cash flows for 82 103 96 50 53 52 Financing cash flows for 32 40 33 12 12 7 In addition to the amounts disclosed above, Dominion Energy’s Consolidated Statements of Income for the years ended December 31, 2022, 2021 and 2020, include $ 16 million, $ 168 million and $ 175 million, respectively, of rental revenue, included in operating revenue and $ 34 million, $ 110 million and $ 102 million, respectively, of depreciation expense, included in depreciation, depletion and amortization, related to facilities subject to power purchase agreements under which Dominion Energy is the lessor. At December 31, 2022 and 2021, the weighted average remaining lease term and weighted discount rate for the Companies’ finance and operating leases were as follows: Dominion Energy Virginia Power December 31, 2022 2021 2022 2021 Weighted average remaining lease term - 4 years 5 years 6 years 6 years Weighted average remaining lease term - 29 years 27 years 30 years 25 years Weighted average discount rate - 5.77 % 2.77 % 6.12 % 2.27 % Weighted average discount rate - 3.91 % 3.96 % 3.90 % 4.00 % The Companies’ lease liabilities have the following maturities: Maturity of Lease Liabilities Dominion Energy Virginia Power (millions) Operating Finance Operating Finance 2023 $ 44 $ 52 $ 23 $ 21 2024 36 45 19 20 2025 30 25 15 17 2026 27 20 12 14 2027 25 14 10 11 After 2027 642 15 314 13 Total undiscounted lease payments 804 171 393 96 Present value adjustment ( 251 ) ( 21 ) ( 99 ) ( 14 ) Present value of lease liabilities $ 553 $ 150 $ 294 $ 82 Corporate Office Leasing Arrangement In December 2019, Dominion Energy signed an agreement with a lessor, as amended in May 2020, to construct and lease a new corporate office property in Richmond, Virginia. The lessor provided equity and had obtained financing commitments from debt investors, totaling $ 465 million, to fund the estimated project costs. In March 2021, Dominion Energy notified the lessor of its intention to terminate the leasing arrangement effective April 2021 . As a result, Dominion Energy recorded a charge of $ 62 million ($ 46 million after-tax) in 2021, included in impairment of assets and other charges (reflected in the Corporate and Other segment) in its Consolidated Statements of Income, primarily for amounts required to be repaid to the lessor. Offshore Wind Vessel Leasing Arrangement In December 2020, Dominion Energy signed an agreement (subsequently amended in December 2022) with a lessor to complete construction of and lease a Jones Act compliant offshore wind installation vessel. This vessel is designed to handle current turbine technologies as well as next generation turbines. The lessor is providing equity and has obtained financing commitments from debt investors, totaling $ 550 million, to fund the estimated project costs. The project is expected to be ready for the 2024 offshore wind turbine installation season. Dominion Energy has been appointed to act as the construction agent for the lessor, during which time Dominion Energy will request cash draws from the lessor and debt investors to fund all project costs, which totaled $ 334 million as of December 31, 2022. If the project is terminated under certain events of default, Dominion Energy could be required to pay up to 100 % of the then funded amount. The initial lease term will commence once construction is substantially complete and the vessel is delivered and will mature in November 2027 . At the end of the initial lease term, Dominion Energy can (i) extend the term of the lease for an additional term, subject to the approval of the participants, at current market terms, (ii) purchase the property for an amount equal to the outstanding project costs or, (iii) subject to certain terms and conditions, sell the property on behalf of the lessor to a third party using commercially reasonable efforts to obtain the highest cash purchase price for the property. If the project is sold and the proceeds from the sale are insufficient to repay the investors for the outstanding project costs, Dominion Energy may be required to make a payment to the lessor for the difference between the outstanding project costs and sale proceeds. Dominion Energy is not considered the owner during construction for financial accounting purposes and, therefore, will not reflect the construction activity in its consolidated financial statements. Dominion Energy expects to recognize a right-of-use asset and a corresponding finance lease liability at the commencement of the lease term. Dominion Energy will be considered the owner of the leased property for tax purposes, and as a result, will be entitled to tax deductions for depreciation and interest expense.

Variable Interest Entities

Variable Interest Entities	12 Months Ended
	Dec. 31, 2022
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Variable Interest Entities	NOTE 16. VARIABLE INTEREST ENTITIES The primary beneficiary of a VIE is required to consolidate the VIE and to disclose certain information about its significant variable interests in the VIE. The primary beneficiary of a VIE is the entity that has both 1) the power to direct the activities that most significantly impact the entity’s economic performance and 2) the obligation to absorb losses or receive benefits from the entity that could potentially be significant to the VIE. Dominion Energy At December 31, 2022, Dominion Energy owns a 50 % membership interest in Cove Point, as discussed in Notes 3 and 9. Dominion Energy concluded that Cove Point is a VIE due to the limited partners lacking the characteristics of a controlling financial interest. As a result of the GT&S Transaction, effective November 1, 2020, Dominion Energy is no longer the primary beneficiary of Cove Point as BHE retains the power to direct the activities that most significantly impact Cove Point’s economic performance. Dominion Energy’s maximum exposure to loss is limited to its current and future investment, as well as any obligations under guarantees provided. See Note 23 for additional information. At December 31, 2022, Dominion Energy owns a 53 % membership interest in Atlantic Coast Pipeline. Dominion Energy concluded that Atlantic Coast Pipeline is a VIE because it has insufficient equity to finance its activities without additional subordinated financial support. Dominion Energy has concluded that it is not the primary beneficiary of Atlantic Coast Pipeline as it does not have the power to direct the activities of Atlantic Coast Pipeline that most significantly impact its economic performance, as the power to direct is shared with Duke Energy. Dominion Energy is obligated to provide capital contributions based on its ownership percentage. Dominion Energy’s maximum exposure to loss is limited to any future investment. See Note 9 for additional details regarding the nature of this entity. Dominion Energy and Virginia Power The Companies’ nuclear decommissioning trust funds and Dominion Energy’s rabbi trusts hold investments in limited partnerships or similar type entities (see Note 9 for additional details). Dominion Energy and Virginia Power concluded that these partnership investments are VIEs due to the limited partners lacking the characteristics of a controlling financial interest. Dominion Energy and Virginia Power have concluded neither is the primary beneficiary as they do not have the power to direct the activities that most significantly impact these VIEs’ economic performance. Dominion Energy and Virginia Power are obligated to provide capital contributions to the partnerships as required by each partnership agreement based on their ownership percentages. Dominion Energy and Virginia Power’s maximum exposure to loss is limited to their current and future investments. Virginia Power Virginia Power purchased shared services from DES, an affiliated VIE, of $ 396 million, $ 380 million and $ 349 million for the years ended December 31, 2022, 2021 and 2020, respectively. Virginia Power’s Consolidated Balance Sheets included amounts due to DES of $ 28 million at December 31, 2022, and $ 20 million at December 31, 2021, respectively, recorded in payables to affiliates in the Consolidated Balance Sheets. Virginia Power determined that it is not the primary beneficiary of DES as it does not have power to direct the activities that most significantly impact its economic performance as well as the obligation to absorb losses and benefits which could be significant to it. DES provides accounting, legal, finance and certain administrative and technical services to all Dominion Energy subsidiaries, including Virginia Power. Virginia Power has no obligation to absorb more than its allocated share of DES costs.

Short Term Debt and Credit Agre

Short Term Debt and Credit Agreements	12 Months Ended
	Dec. 31, 2022
Debt Disclosure [Abstract]
Short-Term Debt and Credit Agreements	NOTE 17. SHORT-TERM DEBT AND CREDIT AGREEMENTS The Companies use short-term debt to fund working capital requirements and as a bridge to long-term debt financings. The levels of borrowing may vary significantly during the course of the year, depending upon the timing and amount of cash requirements not satisfied by cash from operations. In addition, Dominion Energy utilizes cash and letters of credit to fund collateral requirements. Collateral requirements are impacted by commodity prices, hedging levels, Dominion Energy’s credit ratings and the credit quality of its counterparties. Dominion Energy Dominion Energy’s short-term financing is supported by its $ 6.0 billion joint revolving credit facility that provides for a discount in the pricing of certain annual fees and amounts borrowed by Dominion Energy under the facility if Dominion Energy achieves certain annual renewable electric generation and diversity and inclusion objectives. Commercial paper and letters of credit outstanding, as well as capacity available under the credit facility were as follows: Facility Limit Outstanding Commercial Paper (1) Outstanding Letters of Credit Facility Capacity Available (millions) At December 31, 2022 Joint revolving credit facility (2) $ 6,000 $ 3,076 $ 202 $ 2,722 At December 31, 2021 Joint revolving credit facility (2) $ 6,000 $ 1,883 $ 131 $ 3,986 (1) The weighted-average interest rates of the outstanding commercial paper supported by Dominion Energy’s credit facility was 4.73 % and 0.31 % at December 31, 2022 and 2021, respectively. (2) This credit facility matures in June 2026, with the potential to be extended by the borrowers to June 2028, and can be used by the borrowers under the credit facility to support bank borrowings and the issuance of commercial paper, as well as to support up to a combined $ 2.0 billion of letters of credit. DESC and Questar Gas’ short-term financings are supported through access as co-borrowers to the joint revolving credit facility discussed above with the Companies. At December 31, 2022, the sub-limits for DESC and Questar Gas were $ 500 million and $ 250 million, respectively. In March 2021, FERC granted DESC authority through March 2023 to issue short-term indebtedness (pursuant to Section 204 of the Federal Power Act) in amounts not to exceed $ 2.2 billion outstanding with maturity dates of one year or less. In addition, in March 2021, FERC granted GENCO authority through March 2023 to issue short-term indebtedness not to exceed $ 200 million outstanding with maturity dates of one year or less. In January 2023, DESC and GENCO applied to FERC for a two-year short-term borrowing authorization. The applications are pending. In addition to the joint revolving credit facility mentioned above, Dominion Energy also has a credit facility which allows Dominion Energy to issue up to approximately $ 30 million in letters of credit and was scheduled to mature in June 2022 . In April 2022, Dominion Energy entered into an agreement to amend and restate this facility to extend the maturity date to June 2025 . In May 2022, Dominion Energy further amended and restated this facility to have a maturity date of June 2024 . At December 31, 2022 and 2021, Dominion Energy had $ 25 million and $ 29 million in letters of credit outstanding under this facility, respectively. In December 2021, in connection with the sale of certain non-wholly owned nonregulated solar facilities, as discussed in Note 10, SBL Holdco terminated $ 30 million of credit facilities and Dominion Solar Projects III, Inc. terminated $ 25 million of credit facilities. In July 2021, Dominion Energy entered into an approximately $ 1.3 billion term loan credit agreement following the termination of the Q-Pipe Transaction as discussed in Note 3 and borrowed the full amount available thereunder. The term loan was scheduled to mature in December 2021, with the ability to extend maturity at Dominion Energy’s option to June 2022 and bore interest at a variable rate. The proceeds were utilized to repay the deposit received from BHE on the Q-Pipe Transaction. In December 2021, Dominion Energy used the net proceeds from the completion of the sale of the Q-Pipe Group to Southwest Gas to repay the principal outstanding under the term loan plus accrued interest. In December 2021, DECP Holdings entered into a credit facility, which allows it to issue up to $ 110 million in letters of credit with automatic one-year renewals through the maturity of the facility in December 2024. At both December 31, 2022 and 2021, $ 110 million in letters of credit were outstanding under this agreement with no amounts drawn under the letters of credit. Dominion Energy has an effective shelf registration statement with the SEC for the sale of up to $ 3.0 billion of variable denomination floating rate demand notes, called Dominion Energy Reliability Investment SM . The registration limits the principal amount that may be outstanding at any one time to $ 1.0 billion. The notes are offered on a continuous basis and bear interest at a floating rate per annum determined by the Dominion Energy Reliability Investment Committee, or its designee, on a weekly basis. The notes have no stated maturity date, are non-transferable and may be redeemed in whole or in part by Dominion Energy or at the investor’s option at any time. At December 31, 2022 and December 31, 2021, Dominion Energy’s Consolidated Balance Sheets include $ 347 million and $ 431 million, respectively, presented within short-term debt with weighted-average interest rates of 4.24 % and 1.25 %, respectively. The proceeds are used for general corporate purposes and to repay debt. In January 2023, Dominion Energy entered into a $ 2.5 billion 364-Day term loan facility which bears interest at a variable rate and will mature in January 2024 with the proceeds to be used to repay existing long-term debt and short-term debt upon maturity and for other general corporate purposes. Concurrently, Dominion Energy borrowed an initial $ 1.0 billion with the proceeds used to repay long-term debt. The maximum allowed total debt to total capital ratio under the facility is consistent with such allowed ratio under Dominion Energy’s joint revolving credit facility. Dominion Energy may make up to two additional borrowings under this agreement through March 31, 2023, at which point any unused capacity will cease to be available to Dominion Energy. Virginia Power Virginia Power’s short-term financing is supported through its access as co-borrower to Dominion Energy’s $ 6.0 billion joint revolving credit facility. The credit facility can be used for working capital, as support for the combined commercial paper programs of the borrowers under the credit facility and for other general corporate purposes. Virginia Power’s share of commercial paper and letters of credit outstanding under the joint revolving credit facility with Dominion Energy, Questar Gas and DESC were as follows: Facility Limit Outstanding Commercial Paper (1) Outstanding Letters of Credit (millions) At December 31, 2022 Joint revolving credit facility (2) $ 6,000 $ 941 $ 140 At December 31, 2021 Joint revolving credit facility (2) $ 6,000 $ 745 $ 40 (1) The weighted-average interest rates of the outstanding commercial paper supported by the credit facility was 4.68 % and 0.26 % at December 31, 2022 and 2021, respectively. (2) The full amount of the facility is available to Virginia Power, less any amounts outstanding to co-borrowers Dominion Energy, Questar Gas and DESC. The sub-limit for Virginia Power is set pursuant to the terms of the facility but can be changed at the option of the borrowers multiple times per year. At December 31, 2022, the sub-limit for Virginia Power was $ 1.75 billion. If Virginia Power has liquidity needs in excess of its sub-limit, the sub-limit may be changed or such needs may be satisfied through short-term intercompany borrowings from Dominion Energy. This credit facility matures in June 2026, with the potential to be extended by the borrowers to June 2028. The credit facility can be used to support bank borrowings and the issuance of commercial paper, as well as to support up to $ 2.0 billion (or the sub-limit, whichever is less) of letters of credit. In January 2023, Virginia Power entered into a letter of credit facility which allows Virginia Power to issue up to $ 125 million in letters of credit and matures in January 2026 . Through February 2023, less than $ 1 million in letters of credit were issued and outstanding under this facility with no amounts drawn under the letters of credit.

Long-Term Debt

Long-Term Debt	12 Months Ended
	Dec. 31, 2022
Debt Disclosure [Abstract]
Long-Term Debt	NOTE 18. LONG-TERM DEBT 2022 (1) Dominion Energy Virginia Power At December 31, 2022 2021 2022 2021 (millions, except percentages) Sustainability Revolving Credit Agreement, variable rate, due 2024 (2) 5.24 % $ 450 $ — Unsecured Senior Notes: Variable rate, due 2023 5.30 % 1,000 1,000 1.45 % to 7.0 %, due 2022 to 2052 (3)(4) 4.01 % 12,476 11,238 Unsecured Junior Subordinated Notes: 3.071 % due 2024 3.07 % 700 700 Payable to Affiliated Trust, 8.4 %, due 2031 8.40 % 10 10 Enhanced Junior Subordinated Notes: 5.75 % due 2054 5.75 % 685 685 Virginia Electric and Power Company: Unsecured Senior Notes, 2.30 % to 8.875 %, due 2022 to 2052 3.99 % 15,135 13,238 $ 15,135 $ 13,238 Tax-Exempt Financings, 0.75 % to 1.90 %, due 2032 to 2041 (5) 1.32 % 625 625 625 625 DECP Holdings, Term Loan, variable rate, due 2024 (6) 5.71 % 2,349 2,500 DESC: First Mortgage Bonds, 2.30 % to 6.625 %, due 2028 to 2065 5.09 % 3,634 3,634 Tax-Exempt Financings (7) : Variable rate due 2038 3.70 % 35 35 3.625 % and 4.00 %, due 2028 and 2033 3.90 % 54 54 GENCO, variable rate due 2038 3.70 % 33 33 Other 3.63 % 1 1 Secured Senior Notes, 4.82 %, due 2042 (8) 4.82 % 308 314 Tax-Exempt Financing, 3.8 % due 2033 3.80 % 27 27 Total Principal $ 37,522 $ 34,094 $ 15,760 $ 13,863 Fair value hedge valuation (9) — 2 Securities due within one year (10) ( 2,848 ) ( 805 ) ( 700 ) ( 300 ) Unamortized discount, premium and debt issuance costs, net ( 322 ) ( 282 ) ( 144 ) ( 110 ) Derivative restructuring (11) 141 738 — 446 Finance leases 91 100 65 57 Total long-term debt $ 34,584 $ 33,847 $ 14,981 $ 13,956 (1) Represents weighted-average coupon rates for debt outstanding as of December 31, 2022. (2) This $ 900 million supplemental credit facility, entered in June 2021, offers a reduced interest rate margin with respect to borrowed amounts allocated to certain environmental sustainability or social investment initiatives. Proceeds of the supplemental credit facility also may be used for general corporate purposes, but such proceeds are not eligible for a reduced interest rate margin. In June 2021 and August 2021, Dominion Energy borrowed $ 250 million and $ 650 million respectively. The proceeds from these borrowings were used to support environmental sustainability and social investment initiatives ($ 250 million) and for general corporate purposes ($ 650 million). In November 2021 and December 2021, Dominion Energy repaid $ 650 million and $ 250 million, respectively, borrowed under this arrangement. In May 2022, Dominion Energy borrowed $ 900 million. The proceeds from these borrowings were used to support environmental sustainability and social investment initiatives ($ 450 million) and for general corporate purposes ($ 450 million). In June 2022, Dominion Energy repaid $ 450 million borrowed for general corporate purposes. (3) Includes debt assumed by Dominion Energy from the merger of its former CNG subsidiary. (4) In 2022, Dominion Energy repurchased $ 263 million of senior notes with various interest rates and maturity dates. Gains related to the early redemption of the senior notes were $ 35 million ($ 26 million after-tax) reflected within interest and related charges in Dominion Energy’s Consolidated Statements of Income. (5) These financings relate to certain pollution control equipment at Virginia Power’s generating facilities. (6) The term loan amortizes over a 17-year period and matures in December 2024 with the potential to be extended to December 2026. The debt is secured by DECP Holdings’ noncontrolling interest in Cove Point. (7) Industrial revenue bonds totaling $ 68 million are secured by letters of credit that expire, subject to renewal, in the fourth quarter of 2023. (8) Represents debt associated with Eagle Solar. The debt is nonrecourse to Dominion Energy and is secured by Eagle Solar’s interest in certain solar facilities. (9) Represents the valuation of certain fair value hedges associated with Dominion Energy’s fixed rate debt. (10) Dominion Energy and Virginia Power's weighted-average rate for securities due within one year was 3.69 % and 2.75 %, respectively, as of December 31, 2022. (11) Excludes $ 447 million at December 31, 2022 for both Dominion Energy and Virginia Power, representing the current portion which is presented within securities due within one year in the Companies’ Consolidated Balance Sheets. The Companies did not have any current derivative restructuring balances at December 31, 2021. Based on stated maturity dates rather than early redemption dates that could be elected by instrument holders, the scheduled principal payments of long-term debt, at December 31, 2022 were as follows: 2023 2024 2025 2026 2027 Thereafter Total (millions, except percentages) Dominion Energy Term Loans $ 134 $ 2,215 $ — $ — $ — $ — $ 2,349 Sustainability Revolving Credit — 450 — — — — 450 First Mortgage Bonds — — — — — 3,634 3,634 Unsecured Senior Notes 2,700 650 1,500 2,120 1,783 19,859 28,612 Secured Senior Notes 17 31 19 20 21 200 308 Tax-Exempt Financings — — — — — 774 774 Unsecured Junior Subordinated — — — — — 10 10 Unsecured Junior Subordinated — 700 — — — — 700 Enhanced Junior Subordinated — — — — — 685 685 Total $ 2,851 $ 4,046 $ 1,519 $ 2,140 $ 1,804 $ 25,162 $ 37,522 Weighted-average Coupon 3.69 % 4.81 % 3.01 % 2.84 % 3.74 % 4.34 % Virginia Power Unsecured Senior Notes $ 700 $ 350 $ 350 $ 1,150 $ 1,350 $ 11,235 $ 15,135 Tax-Exempt Financings — — — — — 625 625 Total $ 700 $ 350 $ 350 $ 1,150 $ 1,350 $ 11,860 $ 15,760 Weighted-average Coupon 2.75 % 3.45 % 3.10 % 3.08 % 3.61 % 4.10 % The Companies’ credit facilities and debt agreements, both short-term and long-term, contain customary covenants and default provisions. As of December 31, 2022, there were no events of default under these covenants. Enhanced Junior Subordinated Notes In October 2014, Dominion Energy issued $ 685 million of October 2014 hybrids that will bear interest at 5.75 % per year until October 1, 2024. Thereafter, assuming three-month LIBOR has been terminated and the October 2014 hybrids remain outstanding, interest will accrue at a SOFR-based rate selected by, and subject to any spread adjustment or other benchmark conforming changes implemented by, the Board of Governors of the Federal Reserve in accordance with the Adjustable Interest Rate (LIBOR) Act of 2022. In July 2016, Dominion Energy issued $ 800 million of 5.25 % July 2016 hybrids. In August 2021, Dominion Energy redeemed the remaining principal outstanding of $ 800 million of its July 2016 hybrids, which would have otherwise matured in 2076 and were listed on the NYSE under the symbol DRUA. Expenses related to the early redemption of the hybrids were $ 23 million reflected within interest and related charges in the Consolidated Statements of Income for the year ended December 31, 2021. Dominion Energy may defer interest payments on the hybrids on one or more occasions for up to 10 consecutive years. If the interest payments on the hybrids are deferred, Dominion Energy may not make distributions related to its capital stock, including dividends, redemptions, repurchases, liquidation payments or guarantee payments during the deferral period. Also, during the deferral period, Dominion Energy may not make any payments on or redeem or repurchase any debt securities that are equal in right of payment with, or subordinated to, the hybrids. Derivative Restructuring In June 2020, Dominion Energy amended a portfolio of interest rate swaps with a notional value of $ 2.0 billion, extending the mandatory termination dates from 2020 and 2021 to December 2024 . As a result of this noncash financing activity with an embedded interest rate swap, Dominion Energy recorded $ 326 million in other long-term debt representing the net present value of the initial fair value measurement of the new contract with an imputed interest rate of 1.19 %, in its Consolidated Balance Sheets with an embedded interest rate derivative that had a fair value of zero at inception. In August 2021, Dominion Energy settled certain of the outstanding interest rate swaps which would have otherwise matured in December 2024, resulting in a $ 39 million reduction in other long-term debt. In August 2022, Dominion Energy settled certain of the outstanding interest rate swaps which would have otherwise matured in December 2024 , resulting in a $ 154 million reduction in other long-term debt. In August 2020, Virginia Power amended a portfolio of interest rate swaps with a notional value of $ 900 million, extending the mandatory termination dates from 2020 to December 2023 . As a result of this noncash financing activity with an embedded interest rate swap, Virginia Power recorded $ 443 million in other long-term debt representing the net present value of the initial fair value measurement of the new contract with an imputed interest rate of 0.34 %, in its Consolidated Balance Sheets with an embedded interest rate derivative that had a fair value of zero at inception. The interest rate swaps were in a hedge relationship prior to the transaction. Virginia Power de-designated the hedge relationships prior to the transaction and then designated the new interest rate swap in a hedge relationship after the transaction.

Preferred Stock

Preferred Stock	12 Months Ended
	Dec. 31, 2022
Equity [Abstract]
Preferred Stock	NOTE 19. PREFERRED STOCK Dominion Energy is authorized to issue up to 20 million shares of preferred stock, which may be designated into separate classes. At December 31, 2022, Dominion Energy had issued and outstanding 1.8 million shares preferred stock, 0.8 million and 1.0 million of which were designated as the Series B Preferred Stock and the Series C Preferred Stock, respectively. At December 31, 2021, Dominion Energy had issued and outstanding 3.4 million shares of preferred stock, 1.6 million, 0.8 million and 1.0 million of which were designated as the Series A Preferred Stock, the Series B Preferred Stock and the Series C Preferred Stock, respectively. DESC is authorized to issue up to 20 million shares of preferred stock. At both December 31, 2022 and 2021, DESC had issued and outstanding 1,000 shares of preferred stock, all of which were held by SCANA and are eliminated in consolidation. Virginia Power is authorized to issue up to 10 million shares of preferred stock, $ 100 liquidation preference; however, no ne were issued and outstanding at December 31, 2022 or 2021. 2019 Corporate Units In June 2019, Dominion Energy issued $ 1.6 billion of 2019 Equity Units, initially in the form of 2019 Series A Corporate Units. The Corporate Units were listed on the NYSE under the symbol DCUE. The net proceeds were used for general corporate purposes and to repay short-term debt, including commercial paper. Each 2019 Series A Corporate Unit consisted of a stock purchase contract and a 1/10, or 10 %, undivided beneficial ownership interest in one share of Series A Preferred Stock. Beginning in June 2022, the Series A Preferred Stock was convertible at the option of the holder. Settlement of any conversion was initially payable in cash, common stock or a combination thereof, at Dominion Energy’s election. In November 2021, Dominion Energy’s Articles of Incorporation were amended to require that any conversion of its Series A Preferred Stock be settled, at Dominion Energy’s election, either entirely in cash or in cash up to the first $1,000 per share and in shares of Dominion Energy common stock, cash or any combination thereof for any amounts in excess of $1,000 per share . As a result of establishing a minimum amount to be settled in cash if the holders elect to convert the Series A Preferred Stock, $ 1.6 billion was reclassified from equity to mezzanine equity in 2021. The Series A Preferred Stock was redeemable in cash by Dominion Energy beginning September 2022 at the liquidation preference. The stock purchase contracts obligated the holders to purchase shares of Dominion Energy common stock in June 2022. The purchase price paid under the stock purchase contracts was $ 100 per Corporate Unit and the number of shares purchased was determined under a formula based upon the average closing price of Dominion Energy common stock near the settlement date. See Note 20 for additional information. The Series A Preferred Stock had been pledged upon issuance as collateral to secure the purchase of common stock under the related stock purchase contracts. Dominion Energy paid cumulative dividends on the Series A Preferred Stock and quarterly contract adjustment payments on the stock purchase contracts, at the rates described below. Pursuant to the terms of the 2019 Equity Units, Dominion Energy conducted a final remarketing of substantially all shares of Series A Preferred Stock in May 2022 which resulted in the dividend rate for all shares of Series A Preferred Stock being reset to 1.75 % for the June 2022 through August 2022 dividend period and 6.75 % effective September 2022. The conversion rate on the Series A Preferred Stock did not increase as a result of the remarketing. In May 2022, Dominion Energy received a commitment from a financial institution to purchase up to 1.6 million shares of the Series A Preferred Stock in the final remarketing. Accordingly, following the settlement of the successful remarketing and approval from its Board of Directors in June 2022, Dominion Energy became obligated to redeem all outstanding shares of Series A Preferred Stock in September 2022. As such, effective June 2022, the Series A Preferred Stock was considered to be mandatorily redeemable and was classified as a current liability. In addition, Dominion Energy made a short-term deposit at the financial institution as described further in Note 9. Proceeds from the final remarketing were used on behalf of holders of 2019 Series A Corporate Units at the time of the remarketing to pay the purchase price to Dominion Energy for the issuance of its common stock under the stock purchase contracts included in such corporate units in June 2022. In September 2022, Dominion Energy redeemed all outstanding shares of Series A Preferred Stock for $ 1.6 billion. Selected information about Dominion Energy’s 2019 Equity Units is presented below: Issuance Date Units Issued Total Net (1) Total Preferred (2) Cumulative Stock Purchase Stock Purchase (3) Stock Purchase (millions except interest rates) 6/14/2019 16 $ 1,582 $ 1,610 1.75 % 5.5 % $ 250 6/1/2022 (1) Issuance costs of $ 28 million were recorded as a reduction to preferred stock ($ 14 million) and common stock ($ 14 million). In connection with the reclassification of the Series A Preferred Stock to mezzanine equity in 2021, the issuance costs originally recognized as a reduction to preferred stock were reclassified to common stock. (2) Dominion Energy recorded dividends of $ 12 million ($ 7.292 per share), $ 28 million ($ 17.50 per share) and $ 28 million ($ 17.50 per share) for the years ended December 31, 2022, 2021 and 2020, respectively. In addition, Dominion Energy recorded interest expense of $ 7 million on the Series A Preferred Stock for the year ended December 31, 2022, following the reclassification of these shares to a mandatorily redeemable liability effective June 2022 as discussed above. (3) Payments of $ 44 million, $ 85 million and $ 83 million were made in 2022, 2021 and 2020, respectively. The stock purchase contract liability was $ 44 million at December 31, 2021. Series B Preferred Stock In December 2019, Dominion Energy issued 800,000 shares of Series B Preferred Stock for $ 791 million, net of $ 9 million of issuance costs. The preferred stock has a liquidation preference of $ 1,000 per share and currently pays a 4.65 % dividend per share on the liquidation preference. Dividends are paid cumulatively on a semi-annual basis, commencing June 15, 2020. Dominion Energy recorded dividends of $ 37 million ($ 46.50 per share) for each of the years ended December 31, 2022, 2021 and 2020. The dividend rate for the Series B Preferred Stock will be reset every five years beginning on December 15, 2024 to equal the then-current five-year U.S. Treasury rate plus a spread of 2.993 %. Unless all accumulated and unpaid dividends on the Series B Preferred Stock have been declared and paid, Dominion Energy may not make any distributions on any of its capital stock ranking equal or junior to the Series B Preferred Stock as to dividends or upon liquidation, including through dividends, redemptions, repurchases or otherwise. Dominion Energy may, at its option, redeem the Series B Preferred Stock in whole or in part on December 15, 2024 or on any subsequent fifth anniversary of such date at a price equal to $ 1,000 per share plus any accumulated and unpaid dividends. Dominion Energy may also, at its option, redeem the Series B Preferred Stock in whole but not in part at a price equal to $ 1,020 per share plus any accumulated and unpaid dividends at any time within a certain period of time following any change in the criteria ratings agencies use to assign equity credit to securities such as the Series B Preferred Stock that has certain adverse effects on the equity credit actually received by the Series B Preferred Stock. Holders of the Series B Preferred Stock have no voting rights except in the limited circumstances provided for in the terms of the Series B Preferred Stock or as otherwise required by applicable law. The Series B Preferred Stock is not subject to any sinking fund or other obligation of ours to redeem, repurchase or retire the Series B Preferred Stock. The preferred stock contains no conversion rights. Series C Preferred Stock In December 2021, Dominion Energy issued 750,000 shares of Series C Preferred Stock for $ 742 million, net of $ 8 million of issuance costs. Also in December 2021, Dominion Energy issued 250,000 shares of Series C Preferred Stock valued at $ 250 million to the qualified benefit pension plans. See Note 22 for further information regarding activity surrounding pension plan contributions. The preferred stock has a liquidation preference of $ 1,000 per share and currently pays a 4.35 % dividend per share on the liquidation preference. Dividends are paid cumulatively on a semi-annual basis, commencing April 15, 2022. Dominion Energy recorded dividends of $ 44 million ($ 43.50 per share) and $ 3 million ($ 2.6583 per share) and for the years ended December 31, 2022 and 2021, respectively. The dividend rate for the Series C Preferred Stock will be reset every five years beginning on April 15, 2027 to equal the then-current five-year U.S. Treasury rate plus a spread of 3.195 %. Unless all accumulated and unpaid dividends on the Series C Preferred Stock have been declared and paid, Dominion Energy may not make any distributions on any of its capital stock ranking equal or junior to the Series C Preferred Stock as to dividends or upon liquidation, including through dividends, redemptions, repurchases or otherwise. Dominion Energy may, at its option, redeem the Series C Preferred Stock in whole or in part anytime from and including January 15, 2027 through and including April 15, 2027 or during any subsequent fifth anniversary of such period at a price equal to $ 1,000 per share plus any accumulated and unpaid dividends. Dominion Energy may also, at its option, redeem the Series C Preferred Stock in whole but not in part at a price equal to $ 1,020 per share plus any accumulated and unpaid dividends at any time within a certain period of time following any change in the criteria ratings agencies use to assign equity credit to securities such as the Series C Preferred Stock that has certain adverse effects on the equity credit actually received by the Series C Preferred Stock. Holders of the Series C Preferred Stock have no voting rights except in the limited circumstances provided for in the terms of the Series C Preferred Stock or as otherwise required by applicable law. The Series C Preferred Stock is not subject to any sinking fund or other obligation of ours to redeem, repurchase or retire the Series C Preferred Stock. The preferred stock contains no conversion rights.

Equity

Equity	12 Months Ended
	Dec. 31, 2022
Equity [Abstract]
Equity	NOTE 20. EQUITY Common Stock Dominion Energy During 2022, 2021 and 2020, Dominion Energy recorded, net of fees and commissions, $ 2.0 billion, $ 340 million and $ 481 million from the issuance of approximately 25 million, 4 million and 7 million shares of common stock, respectively, as described below. Dominion Energy Direct ® and Employee Savings Plans Dominion Energy maintains Dominion Energy Direct ® and a number of employee savings plans through which contributions may be invested in Dominion Energy’s common stock. These shares may either be newly issued or purchased on the open market with proceeds contributed to these plans. In August 2020, Dominion Energy began purchasing its common stock on the open market for these direct stock purchase plans. During 2020, Dominion Energy received cash of $ 159 million from the issuance of 2.1 million of such shares through Dominion Energy Direct ® and employee savings plans. In January 2021, Dominion Energy began issuing new shares of common stock for these direct stock purchase plans. During 2022 and 2021, Dominion Energy issued 2.4 million and 2.6 million, respectively, of such shares and received proceeds of $ 179 million and $ 192 million, respectively. At-the-Market Program In March 2020, Dominion Energy entered into sales agency agreements to effect sales under a $ 500 million at-the-market common stock program. Dominion Energy did no t issue any shares under this program which expired in June 2020. In August 2020, Dominion Energy entered into sales agency agreements to effect sales under a new at-the-market program. Under the sales agency agreements, Dominion Energy may, from time to time, offer and sell shares of its common stock through the sales agents or enter into one or more forward sale agreements with respect to shares of its common stock. Sales by Dominion Energy through the sales agents or by forward sellers pursuant to a forward sale agreement cannot exceed $ 1.0 billion in the aggregate. In November 2021, Dominion Energy entered forward sale agreements for approximately 1.1 million shares of its common stock to be settled by November 2022 at an initial forward price of $ 74.66 per share. Except in certain circumstances, Dominion Energy could have elected physical, cash or net settlement of the forward sale agreements. In November 2022, Dominion Energy provided notice to elect physical settlement of the forward sale agreements and in December 2022 received total proceeds of $ 78 million. Other Issuances In August 2021, Dominion Energy issued 0.6 million shares of its common stock, valued at $ 45 million, to satisfy DESC’s obligation for the initial payment under a settlement agreement with the SCDOR discussed in Note 23. In May 2022, Dominion Energy issued 0.9 million shares of its common stock, valued at $ 72 million, to partially satisfy DESC’s remaining obligation under the settlement agreement. In June 2022, Dominion Energy issued 0.4 million shares of its common stock, valued at $ 30 million, to partially satisfy its obligation under a settlement agreement for the State Court Merger Case discussed in Note 23. In June 2022, Dominion Energy issued 19.4 million shares of its common stock to settle the stock purchase contract component of the 2019 Equity Units, as discussed in Note 19, and received proceeds of $ 1.6 billion. In July 2021, Dominion Energy issued 1.4 million shares of its common stock, valued at $ 104 million, to satisfy DESC’s obligation under a settlement agreement for the FILOT litigation discussed in Note 23. In September 2020, Dominion Energy issued 4.1 million shares of its common stock to satisfy its obligation under a settlement agreement for the Santee Cooper Ratepayer Case discussed in Note 23. These shares were immediately repurchased as discussed below. Repurchase of Common Stock Dominion Energy did no t repurchase any shares in 2022 or 2021, except for shares tendered by employees to satisfy tax withholding obligations on vested restricted stock, which do not count against its stock repurchase authorization. During 2020, Dominion Energy repurchased 38.9 million shares of Dominion Energy common stock for $ 3.1 billion through an open market agreement, a private transaction and accelerated share repurchase agreements as discussed below. In July 2020, in contemplation of Dominion Energy entering the July 2020 agreement to sell substantially all of its gas transmission and storage operations to BHE, the Board of Directors authorized the repurchase of up to $ 3.0 billion of Dominion Energy’s common stock and rescinded its prior repurchase authorization approved in February 2005 and modified in June 2007. Dominion Energy completed repurchases under this authorization in December 2020. In November 2020, the Board of Directors authorized the repurchase of up to $ 1.0 billion of Dominion Energy’s common stock in addition to the repurchase program authorized in July 2020. This repurchase program does not include a specific timetable or price or volume targets and may be modified, suspended or terminated at any time. Shares may be purchased through open market or privately negotiated transactions or otherwise at the discretion of management subject to prevailing market conditions, applicable securities laws and other factors. In August 2020, Dominion Energy began repurchasing shares under an open market agreement with a financial institution. During the third quarter of 2020, Dominion Energy repurchased 7.2 million shares of Dominion Energy common stock for $ 562 million. During the fourth quarter of 2020, Dominion Energy repurchased 3.7 million shares of Dominion Energy common stock for $ 295 million. In September 2020, Dominion Energy repurchased 4.1 million shares of Dominion Energy common stock in a private transaction for $ 323 million. In September 2020, Dominion Energy entered into two prepaid accelerated share repurchase agreements with separate financial institutions as counterparties. Dominion Energy made payments totaling $ 1.5 billion to the counterparties in exchange for an aggregate of 17.2 million shares of Dominion Energy common stock, which represented approximately 90% of $ 1.5 billion worth of Dominion Energy shares based on the closing price of such shares on the date the agreements were executed. In November 2020, Dominion Energy received an additional 1.4 million shares upon completion of the respective purchase periods under the terms of the agreements. The number of additional shares delivered under each agreement was based on the average of the daily volume-weighted average stock prices of Dominion Energy’s common stock during the term of the applicable purchase period, less a discount. As a result, Dominion Energy recorded a reduction to common stock of $ 1.5 billion. 400 million to the counterparty in exchange for an aggregate of 5.0 million shares of Dominion Energy common stock, which represented all $ 400 million worth of Dominion Energy shares based on the closing price of such shares on the date the agreement was executed. In December 2020, Dominion Energy received an additional 0.3 million shares upon completion of the purchase period under the terms of the agreement. The number of additional shares was based on the average of the daily volume-weighted average stock prices of Dominion Energy’s common stock during the term of the purchase period, less a discount. As a result, Dominion Energy recorded a reduction to common stock of $ 400 million. Virginia Power In 2022, 2021 and 2020, Virginia Power did not issue any shares of its common stock to Dominion Energy. Noncontrolling Interests GT&S Transaction Closing In November 2020, as part of the GT&S Transaction, Dominion Energy sold a 25 % controlling interest in Cove Point to BHE resulting in Dominion Energy’s remaining 50 % noncontrolling interest accounted for as an equity method investment prospectively. As a result, the $ 1.4 billion of noncontrolling interest related to the 25 % interest in Cove Point held by Brookfield was reversed. See Notes 3 and 9 for further information on the GT&S Transaction and Dominion Energy’s equity method investment in Cove Point. Non-Wholly-Owned Nonregulated Solar Facilities In December 2021, Dominion Energy completed the sale of SBL Holdco, which held Dominion Energy’s 67 % controlling interest in certain nonregulated solar projects, and the sale of its 50 % controlling interest in Four Brothers and Three Cedars. As a result of these sales, all balances recorded as noncontrolling interests associated with these entities were written off. See Note 10 for more information. Accumulated Other Comprehensive Income (Loss) Dominion Energy The following table presents Dominion Energy’s changes in AOCI (net of tax) and reclassifications out of AOCI by component: Commodity Interest Total (1) Investment (2) Pension and (3) Equity (4) Total (millions) Year Ended December 31, 2022 Beginning balance $ — $ ( 358 ) $ ( 358 ) $ 37 $ ( 1,133 ) $ ( 4 ) $ ( 1,458 ) Other — 67 67 ( 100 ) ( 218 ) 1 ( 250 ) Amounts reclassified from AOCI (gains) losses: Interest and — 57 57 — — — 57 Other income — — — 25 102 — 127 Total — 57 57 25 102 — 184 Income tax — ( 15 ) ( 15 ) ( 6 ) ( 27 ) — ( 48 ) Total, net of tax — 42 42 19 75 — 136 Net current — 109 109 ( 81 ) ( 143 ) 1 ( 114 ) Ending balance $ — $ ( 249 ) $ ( 249 ) $ ( 44 ) $ ( 1,276 ) $ ( 3 ) $ ( 1,572 ) Year Ended December 31, 2021 Beginning balance $ ( 1 ) $ ( 418 ) $ ( 419 ) $ 62 $ ( 1,359 ) $ ( 1 ) $ ( 1,717 ) Other — 15 15 ( 7 ) 144 ( 3 ) 149 Amounts reclassified from AOCI (gains) losses: Purchased gas 1 — 1 — — — 1 Interest and — 60 60 — — — 60 Other income — — — ( 23 ) 111 — 88 Total 1 60 61 ( 23 ) 111 — 149 Income tax — ( 15 ) ( 15 ) 5 ( 29 ) — ( 39 ) Total, net of tax 1 45 46 ( 18 ) 82 — 110 Net current 1 60 61 ( 25 ) 226 ( 3 ) 259 Ending balance $ — $ ( 358 ) $ ( 358 ) $ 37 $ ( 1,133 ) $ ( 4 ) $ ( 1,458 ) (1) Net of $ 83 million, $ 119 million and $ 141 million tax at December 31, 2022, 2021 and 2020, respectively. (2) Net of $ 13 million, $( 10 ) million and $( 21 ) million tax at December 31, 2022 and 2021 and 2020, respectively. (3) Net of $ 445 million, $ 396 million and $ 478 million tax at December 31, 2022 and 2021 and 2020, respectively. (4) Net of $ 1 million tax at both December 31, 2022 and 2021 and $— million tax at December 31, 2020. Virginia Power The following table presents Virginia Power’s changes in AOCI (net of tax) and reclassification out of AOCI by component: Interest Rate Total (1) Investment (2) Total (millions) Year Ended December 31, 2022 Beginning balance $ ( 45 ) $ ( 45 ) $ 4 $ ( 41 ) Other 60 60 ( 11 ) 49 Amounts reclassified from AOCI (gains) losses: Interest and related 2 2 — 2 Total 2 2 — 2 Income tax expense ( 1 ) ( 1 ) — ( 1 ) Total, net of tax 1 1 — 1 Net current period other 61 61 ( 11 ) 50 Ending balance $ 16 $ 16 $ ( 7 ) $ 9 Year Ended December 31, 2021 Beginning balance $ ( 60 ) $ ( 60 ) $ 8 $ ( 52 ) Other 13 13 ( 2 ) 11 Amounts reclassified from AOCI (gains) losses: Interest and related 3 3 — 3 Other income — — ( 3 ) ( 3 ) Total 3 3 ( 3 ) — Income tax expense ( 1 ) ( 1 ) 1 — Total, net of tax 2 2 ( 2 ) — Net current period other 15 15 ( 4 ) 11 Ending balance $ ( 45 ) $ ( 45 ) $ 4 $ ( 41 ) (1) Net of $( 5 ) million, $ 16 million and $ 21 million tax at December 31, 2022, 2021 and 2020, respectively. (2) Net of $ 2 million, $( 2 ) million and $( 3 ) million tax at December 31, 2022, 2021 and 2020, respectively. Stock-Based Awards The 2014 Incentive Compensation Plan permits stock-based awards that include restricted stock, performance grants, goal-based stock, stock options and stock appreciation rights. The Non-Employee Directors Compensation Plan permits grants of restricted stock and stock options. Under provisions of these plans, employees and non-employee directors may be granted options to purchase common stock at a price not less than its fair market value at the date of grant with a maximum term of eight years . Option terms are set at the discretion of the Compensation and Talent Development Committee of the Board of Directors or the Board of Directors itself, as provided under each plan. No options are outstanding under either plan. At December 31, 2022, approximately 18 million shares were available for future grants under these plans. Goal-based stock awards are granted in lieu of cash-based performance grants to certain officers who have not achieved a certain targeted level of share ownership. At December 31, 2022 and December 31, 2021, unrecognized compensation cost related to nonvested goal-based stock awards was inconsequential. Dominion Energy measures and recognizes compensation expense relating to share-based payment transactions over the vesting period based on the fair value of the equity or liability instruments issued. Dominion Energy’s results for the years ended December 31, 2022, 2021 and 2020 include $ 36 million, $ 42 million and $ 64 million, respectively, of compensation costs and $ 7 million, $ 9 million and $ 16 million, respectively, of income tax benefits related to Dominion Energy’s stock-based compensation arrangements. Stock-based compensation cost is reported in other operations and maintenance expense in Dominion Energy’s Consolidated Statements of Income. Excess Tax Benefits are classified as a financing cash flow. Restricted Stock Restricted stock grants are made to officers under Dominion Energy’s LTIP and may also be granted to certain key non-officer employees. The fair value of Dominion Energy’s restricted stock awards is equal to the closing price of Dominion Energy’s stock on the date of grant. New shares are issued for restricted stock awards on the date of grant and generally vest over a three-year service period. The following table provides a summary of restricted stock activity for the years ended December 31, 2022, 2021 and 2020: Shares (millions) Weighted - Average Grant Date Fair Value Nonvested at December 31, 2019 1.4 $ 74.77 Granted 0.5 81.74 Vested ( 0.4 ) 74.39 Cancelled and forfeited ( 0.1 ) 81.59 Nonvested at December 31, 2020 1.4 $ 77.41 Granted 0.5 71.78 Vested ( 0.5 ) 73.54 Cancelled and forfeited ( 0.1 ) 75.57 Nonvested at December 31, 2021 1.3 $ 76.65 Granted 0.6 75.08 Vested ( 0.4 ) 77.87 Cancelled and forfeited ( 0.1 ) 73.15 Nonvested at December 31, 2022 1.4 $ 75.56 As of December 31, 2022, unrecognized compensation cost related to nonvested restricted stock awards totaled $ 58 million and is expected to be recognized over a weighted-average period of 2.0 years. The fair value of restricted stock awards that vested was $ 31 million, $ 37 million and $ 35 million in 2022, 2021 and 2020, respectively. Employees may elect to have shares of restricted stock withheld upon vesting to satisfy tax withholding obligations. The number of shares withheld will vary for each employee depending on the vesting date fair market value of Dominion Energy stock and the applicable federal, state and local tax withholding rates. Cash-Based Performance Grants Cash-based performance grants are made to Dominion Energy’s officers under Dominion Energy’s LTIP. The actual payout of cash-based performance grants will vary between zero and 200 % of the targeted amount based on the level of performance metrics achieved. In February 2019, a cash-based performance grant was made to officers. Payout of the performance grant occurred in January 2022 based on the achievement of two performance metrics during 2019, 2020 and 2021: TSR relative to that of companies that are members of Dominion Energy’s compensation peer group and ROIC with an additional payout based on Dominion Energy’s price-earnings ratio relative to that of the members of Dominion Energy’s peer compensation group. The total payout under the grant was $ 6 million, all of which was accrued at December 31, 2021. In February 2020, a cash-based performance grant was made to officers. Payout of the performance grant occurred in January 2023 based on the achievement of two performance metrics during 2020, 2021 and 2022: TSR relative to that of companies that are members of Dominion Energy’s compensation peer group and ROIC with an additional payout based on Dominion Energy’s price-earnings ratio relative to that of the members of Dominion Energy’s peer compensation group. The total of the payout under the grant was $ 4 million, all of which was accrued on December 31, 2022. In February 2021, a cash-based performance grant was made to officers. Payout of the performance grant is expected to occur by March 15, 2024 based on the achievement of two performance metrics during 2021, 2022 and 2023: TSR relative to that of companies that are members of Dominion Energy’s compensation peer group and ROIC. There is an additional opportunity to earn a portion of the award based on Dominion Energy’s relative price-earnings ratio performance. At December 31, 2022, the targeted amount of the three-year grant was $ 11 million and a liability of $ 4 million had been accrued for this award. In February 2022, a cash-based performance grant was made to officers. Payout of the performance grant is expected to occur by March 15, 2025 based on the achievement of three performance metrics during 2022, 2023 and 2024: TSR relative to that of companies that are members of Dominion Energy’s compensation peer group, Cumulative Operating EPS, and Non-Carbon Emitting Generation Capacity Performance. At December 31, 2022, the targeted amount of the three-year grant was $ 17 million and a liability of $ 3 million had been accrued for this award.

Dividend Restrictions

Dividend Restrictions	12 Months Ended
	Dec. 31, 2022
Equity [Abstract]
Dividend Restrictions	NOTE 21. DIVIDEND RESTRICTIONS The Virginia Commission may prohibit any public service company, including Virginia Power, from declaring or paying a dividend to an affiliate if found to be inconsistent with the public interest. At December 31, 2022, the Virginia Commission had not restricted the payment of dividends by Virginia Power. The North Carolina Commission, in its order approving the SCANA Combination, limited cumulative dividends payable to Dominion Energy by Virginia Power and PSNC to (i) the amount of retained earnings the day prior to closing of the SCANA Combination plus (ii) any future earnings recorded by Virginia Power and PSNC after such closing. In addition, notice to the North Carolina Commission is required if payment of dividends causes the equity component of Virginia Power and PSNC’s capital structure to fall below 45 %. The Ohio and Utah Commissions may prohibit any public service company, including East Ohio and Questar Gas, from declaring or paying a dividend to an affiliate if found to be detrimental to the public interest. At December 31, 2022, neither the Ohio Commission nor the Utah Commission had restricted the payment of dividends by East Ohio or Questar Gas, respectively. There is no specific restriction from the South Carolina Commission on the payment of dividends paid by DESC. Pursuant to the SCANA Merger Approval Order, the amount of any DESC dividends paid must be reasonable and consistent with the long-term payout ratio of the electric utility industry and gas distribution industry. DESC’s bond indenture under which it issues first mortgage bonds contains provisions that could limit the payment of cash dividends on its common stock. DESC's bond indenture permits the payment of dividends on DESC's common stock only either (1) out of its Surplus (as defined in the bond indenture) or (2) in case there is no Surplus, out of its net profits for the fiscal year in which the dividend is declared and/or the preceding fiscal year. In addition, pursuant to the SCANA Merger Approval Order, the amount of any DESC dividends paid must be reasonable and consistent with the long-term payout ratio of the electric utility industry and gas distribution industry. At December 31, 2022, DESC’s retained earnings exceed the balance established by the Federal Power Act as a reserve on earnings attributable to hydroelectric generation plants. As a result, DESC is permitted to pay dividends without additional regulatory approval provided that such amounts would not bring the retained earnings balance below the established threshold. See Notes 18 and 19 for a description of potential restrictions on common stock dividend payments by Dominion Energy in connection with the deferral of interest payments on the enhanced junior subordinated notes or a failure to pay dividends on the Series B Preferred Stock or Series C Preferred Stock.

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2022
Compensation And Retirement Disclosure [Abstract]
Employee Benefit Plans	NOTE 22. EMPLOYEE BENEFIT PLANS Dominion Energy—Defined Benefit Plans Dominion Energy provides certain retirement benefits to eligible active employees, retirees and qualifying dependents. Under the terms of its benefit plans, Dominion Energy reserves the right to change, modify or terminate the plans. From time to time in the past, benefits have changed, and some of these changes have reduced benefits. Dominion Energy maintains qualified noncontributory defined benefit pension plans covering virtually all employees who commenced employment prior to July 2021. Retirement benefits are based primarily on years of service, age and the employee’s compensation. Dominion Energy’s funding policy is to contribute annually an amount that is in accordance with the provisions of ERISA. The pension programs also provide benefits to certain retired executives under company-sponsored nonqualified employee benefit plans. The nonqualified plans are funded through contributions to grantor trusts. Dominion Energy also provides retiree healthcare and life insurance benefits with annual employee premiums based on several factors such as age, retirement date and years of service. Pension and other postretirement benefit costs are affected by employee demographics (including age, compensation levels and years of service), the level of contributions made to the plans and earnings on plan assets. These costs may also be affected by changes in key assumptions, including expected long-term rates of return on plan assets, discount rates, healthcare cost trend rates, mortality rates and the rate of compensation increases. Dominion Energy uses December 31 as the measurement date for all of its employee benefit plans. Dominion Energy uses the market-related value of pension plan assets to determine the expected return on plan assets, a component of net periodic pension cost, for all pension plans. The market-related value recognizes changes in fair value on a straight-line basis over a four-year period, which reduces year-to-year volatility. Changes in fair value are measured as the difference between the expected and actual plan asset returns, including dividends, interest and realized and unrealized investment gains and losses. Since the market-related value recognizes changes in fair value over a four-year period, the future market-related value of pension plan assets will be impacted as previously unrecognized changes in fair value are recognized. Dominion Energy’s pension and other postretirement benefit plans hold investments in trusts to fund employee benefit payments. Dominion Energy’s pension and other postretirement plan assets experienced aggregate actual returns (losses) of $( 3.0 ) billion and $ 1.5 billion in 2022 and 2021, respectively, versus expected returns of $ 1.1 billion and $ 1.0 billion, respectively. Differences between actual and expected returns on plan assets are accumulated and amortized during future periods. As such, any investment-related declines in these trusts will result in future increases in the net periodic cost recognized for such employee benefit plans and will be included in the determination of the amount of cash to be contributed to the employee benefit plans. In 2021, Dominion Energy recognized the effects of a curtailment for certain pension plans resulting from an option that provided certain active employees a one-time choice to transition to an enhanced defined contribution plan in lieu of accruing pension benefits for future services. The curtailment resulted in a decrease in the pension benefit obligation of $ 26 million and an increase to net periodic pension cost of $ 2 million. The effects of the curtailment are included in the measurement of Dominion Energy’s pension plans as of December 31, 2021. Funded Status The following table summarizes the changes in pension plan and other postretirement benefit plan obligations and plan assets and includes a statement of the plans’ funded status for Dominion Energy: Pension Benefits Other Postretirement Benefits Year Ended December 31, 2022 2021 2022 2021 (millions, except percentages) Changes in benefit obligation: Benefit obligation at beginning of year $ 10,890 $ 11,363 $ 1,537 $ 1,746 Service cost 142 170 22 25 Interest cost 333 317 45 46 Benefits paid ( 511 ) ( 488 ) ( 97 ) ( 105 ) Actuarial (gains) losses during the year ( 2,716 ) ( 413 ) ( 361 ) ( 161 ) Plan amendments — — — ( 14 ) Sale of Hope ( 64 ) — ( 19 ) — Settlements and curtailments (1) ( 8 ) ( 59 ) — — Benefit obligation at end of year $ 8,066 $ 10,890 $ 1,127 $ 1,537 Changes in fair value of plan assets: Fair value of plan assets at beginning of year $ 11,945 $ 10,979 $ 2,323 $ 2,100 Actual return (loss) on plan assets ( 2,556 ) 1,202 ( 416 ) 294 Employer contributions 9 284 — — Benefits paid ( 511 ) ( 488 ) ( 62 ) ( 71 ) Sale of Hope ( 188 ) — — — Settlements (2) ( 5 ) ( 32 ) — — Fair value of plan assets at end of year $ 8,694 $ 11,945 $ 1,845 $ 2,323 Funded status at end of year $ 628 $ 1,055 $ 718 $ 786 Amounts recognized in the Consolidated Balance Sheets Noncurrent pension and other postretirement benefit assets $ 580 $ 878 $ 899 $ 1,052 Noncurrent assets held for sale 295 368 11 12 Other current liabilities ( 12 ) ( 12 ) ( 13 ) ( 15 ) Noncurrent pension and other postretirement benefit liabilities ( 196 ) ( 127 ) ( 179 ) ( 263 ) Noncurrent liabilities held for sale ( 39 ) ( 52 ) — — Net amount recognized $ 628 $ 1,055 $ 718 $ 786 Significant assumptions used to determine benefit Discount rate 5.65 %- 5.75 % 3.06 %- 3.19 % 5.69 %- 5.70 % 3.04 %- 3.11 % Weighted average rate of increase for compensation 4.38 % 4.51 % n/a n/a Crediting interest rate for cash balance and similar plans 4.40 %- 4.50 % 1.81 %- 1.94 % n/a n/a (1) 2022 amounts include curtailment for Hope as well as settlements of nonqualified pension obligations. 2021 amounts include settlements of nonqualified pension obligations. (2) 2022 and 2021 amounts relate to settlements of nonqualified pension obligations. Actuarial gains recognized during 2022 in Dominion Energy’s pension benefit obligations were $ 2.7 billion primarily driven by an increase in the discount rate. Actuarial gains recognized during 2021 in Dominion Energy’s pension benefit obligations were $ 413 million primarily from an increase in discount rate. Actuarial gains recognized during 2022 in Dominion Energy’s other postretirement benefit obligations were $ 360 million primarily driven by an increase in the discount rate. Actuarial gains recognized during 2021 in Dominion Energy’s other postretirement benefit obligations were $ 161 million resulting from an increase in discount rates, better than expected per capita claims experience and changes in demographic and economic assumptions based on an experience study completed in 2021. The ABO for all of Dominion Energy’s defined benefit pension plans was $ 7.7 billion and $ 10.2 billion at December 31, 2022 and 2021, respectively. Under its funding policies, Dominion Energy evaluates plan funding requirements annually, usually in the fourth quarter after receiving updated plan information from its actuary. Based on the funded status of each plan and other factors, Dominion Energy determines the amount of contributions for the current year, if any, at that time. In December 2021, Dominion Energy issued 250,000 shares of its Series C Preferred Stock to its qualified defined benefit pension plans, valued at $ 250 million. In December 2020, Dominion Energy contributed $ 250 million to its qualified defined benefit pension plans. The shares of preferred stock were contributed though private placements exempt from registration requirements, with an independent fiduciary and investment manager to a separate account within the qualified defined benefit pension plans. Dominion Energy also entered into a registration rights agreement with the independent fiduciary and investment manager pursuant to which Dominion Energy agreed to provide registration rights on customary terms with respect to the shares of preferred stock. Dominion Energy is not required to make any contributions to its qualified defined benefit pension plans in 2023. Dominion Energy considers voluntary contributions from time to time, either in the form of cash or equity securities. Certain of Dominion Energy’s subsidiaries fund other postretirement benefit costs through VEBAs. Dominion Energy’s remaining subsidiaries do no t prefund other postretirement benefit costs but instead pay claims as presented. Dominion Energy did not make any contributions to VEBAs associated with its other postretirement plans in 2022 and 2021. Dominion Energy is not required to make any contributions to its VEBAs associated with its other postretirement plans in 2023. Dominion Energy considers voluntary contributions from time to time, either in the form of cash or equity securities. The following table provides information on the benefit obligations and fair value of plan assets for plans with a benefit obligation in excess of plan assets for Dominion Energy: Pension Benefits Other Postretirement As of December 31, 2022 2021 2022 2021 (millions) Benefit obligation $ 7,655 $ 9,420 $ 197 $ 261 Fair value of plan assets 7,410 9,229 5 7 The following table provides information on the ABO and fair value of plan assets for Dominion Energy’s pension plans with an ABO in excess of plan assets: As of December 31, 2022 2021 (millions) Accumulated benefit obligation $ 776 $ 127 Fair value of plan assets 623 53 The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid for Dominion Energy’s plans: Estimated Future Benefit Payments Pension Benefits Other Postretirement (millions) 2023 $ 518 $ 99 2024 527 97 2025 542 96 2026 551 94 2027 560 93 2028-2032 2,925 433 Plan Assets Dominion Energy’s overall objective for investing its pension and other postretirement plan assets is to achieve appropriate long-term rates of return commensurate with prudent levels of risk. To minimize risk, funds are broadly diversified among asset classes, investment strategies and investment advisors. The long-term strategic target asset allocations for substantially all of Dominion Energy’s pension funds are 26 % U.S. equity, 19 % non-U.S. equity, 32 % fixed income, 3 % real assets and 20 % other alternative investments. U.S. equity includes investments in large-cap, mid-cap and small-cap companies located in the U.S. Non-U.S. equity includes investments in large-cap, mid-cap and small-cap companies located outside of the U.S. including both developed and emerging markets. Fixed income includes corporate debt instruments of companies from diversified industries and U.S. Treasuries. The U.S. equity, non-U.S. equity and fixed income investments are in individual securities as well as mutual funds. Real assets include investments in real estate investment trusts and private partnerships. Other alternative investments include partnership investments in private equity, debt and hedge funds that follow several different strategies. Dominion Energy also utilizes common/collective trust funds as an investment vehicle for its defined benefit plans. A common/collective trust fund is a pooled fund operated by a bank or trust company for investment of the assets of various organizations and individuals in a well-diversified portfolio. Common/collective trust funds are funds of grouped assets that follow various investment strategies. Strategic investment policies are established for Dominion Energy’s prefunded benefit plans based upon periodic asset/liability studies. Factors considered in setting the investment policy include employee demographics, liability growth rates, future discount rates, the funded status of the plans and the expected long-term rate of return on plan assets. Deviations from the plans’ strategic allocation are a function of Dominion Energy’s assessments regarding short-term risk and reward opportunities in the capital markets and/or short-term market movements which result in the plans’ actual asset allocations varying from the strategic target asset allocations. Through periodic rebalancing, actual allocations are brought back in line with the target. Future asset/liability studies will focus on strategies to further reduce pension and other postretirement plan risk, while still achieving attractive levels of returns. Financial derivatives may be used to obtain or manage market exposures and to hedge assets and liabilities. For fair value measurement policies and procedures related to pension and other postretirement benefit plan assets, see Note 2. The fair values of Dominion Energy’s pension plan assets by asset category are as follows: At December 31, 2022 2021 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total (millions) Cash and cash equivalents $ 14 $ 11 $ — $ 25 $ 25 $ 5 $ — $ 30 Common and preferred stocks: U.S. (1) 1,653 170 — 1,823 2,592 244 — 2,836 International 1,034 5 — 1,039 1,773 19 — 1,792 Insurance contracts — 166 — 166 — 279 — 279 Corporate debt instruments 65 805 — 870 81 1,439 — 1,520 Government securities 46 1,377 — 1,423 39 914 — 953 Total recorded at fair value $ 2,812 $ 2,534 $ — $ 5,346 $ 4,510 $ 2,900 $ — $ 7,410 Assets recorded at NAV (2) : Common/collective trust funds 1,780 3,010 Alternative investments: Real estate funds 66 116 Private equity funds 1,284 1,233 Debt funds 192 162 Hedge funds 2 14 Total recorded at NAV $ 3,324 $ 4,535 Total investments (3) $ 8,670 $ 11,945 (1) Includes $ 170 million and $ 258 million of Dominion Energy preferred stock at December 31, 2022 and 2021, respectively. (2) These investments that are measured at fair value using the NAV per share (or its equivalent) as a practical expedient are not required to be categorized in the fair value hierarchy. (3) Excludes net assets related to pending sales of securities and advanced subscription of $ 177 million, net accrued income of $ 27 million, and includes net assets related to pending purchases of securities of $ 180 million at December 31, 2022. Excludes net assets related to pending sales of securities of $ 35 million, net accrued income of $ 27 million, and includes net assets related to pending purchases of securities of $ 62 million at December 31, 2021. The fair values of Dominion Energy’s other postretirement plan assets by asset category are as follows: At December 31, 2022 2021 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total (millions) Cash and cash equivalents $ 3 $ 1 $ — $ 4 $ 3 $ 1 $ — $ 4 Common and preferred stocks: U.S. (1) 685 10 — 695 898 14 — 912 International 181 — — 181 256 1 — 257 Insurance contracts — 10 — 10 — 16 — 16 Corporate debt instruments 4 38 — 42 5 61 — 66 Government securities 3 79 — 82 2 47 — 49 Total recorded at fair value $ 876 $ 138 $ — $ 1,014 $ 1,164 $ 140 $ — $ 1,304 Assets recorded at NAV (2) : Common/collective trust funds 649 840 Alternative investments: Real estate funds 11 13 Private equity funds 158 152 Debt funds 11 9 Hedge funds — 1 Total recorded at NAV $ 829 $ 1,015 Total investments (3) $ 1,843 $ 2,319 (1) Includes $ 10 million of Dominion Energy preferred stock at December 31, 2022. (2) These investments that are measured at fair value using the NAV per share (or its equivalent) as a practical expedient are not required to be categorized in the fair value hierarchy. (3) Excludes net assets related to pending sales of securities and advanced subscription of $ 10 million, net accrued income of $ 2 million, and includes net assets related to pending purchases of securities of $ 10 million at December 31, 2022. Excludes net assets related to pending sales of securities of $ 5 million, net accrued income of $ 2 million, and includes net assets related to pending purchases of securities of $ 3 million at December 31, 2021. The plan assets investments are determined based on the fair values of the investments and the underlying investments, which have been determined as follows: • Cash and Cash Equivalents —Represents interest-bearing cash, foreign cash, and money market fund. Interest bearing cash and money market fund are valued at cost plus accrued interest. The foreign cash balances are valued at the amount held and translated on the reporting date based on prevailing exchange rates. Foreign cash and money market funds are classified as Level 1. The interest bearing cash is held in variation margin and with various brokers, which are less liquid and therefore has been classified as Level 2. 2021 investments were held primarily in short-term notes and treasury bills, valued at cost plus accrued interest. • Common and Preferred Stocks —Investments are valued at the closing price reported on the active market on which the individual securities are traded. Investments in preferred stocks are classified as Level 2 and are valued using pricing models maximizing the use of observable inputs for similar securities. This includes basing value on yields currently available on comparable securities of issuers with similar credit ratings. • Insurance Contracts —Investments in Group Annuity Contracts are stated at fair value based on the fair value of the underlying securities as provided by the managers and include investments in U.S. government securities, corporate debt instruments and state and municipal debt securities. • Corporate Debt Instruments —Investments are valued using pricing models maximizing the use of observable inputs for similar securities. This includes basing value on yields currently available on comparable securities of issuers with similar credit ratings. When quoted prices are not available for identical or similar instruments, the instrument is valued under a discounted cash flows approach that maximizes observable inputs, such as current yields of similar instruments, but includes adjustments for certain risks that may not be observable, such as credit and liquidity risks or a broker quote, if available. • Government Securities —Investments are valued using pricing models maximizing the use of observable inputs for similar securities. • Common/Collective Trust Funds —Common/collective trust funds invest in debt and equity securities and other instruments with characteristics similar to those of the funds’ benchmarks. The primary objectives of the funds are to seek investment returns that approximate the overall performance of their benchmark indexes. These benchmarks are major equity indices, fixed income indices and money market indices that focus on growth, income and liquidity strategies, as applicable. Investments in common/collective trust funds are stated at the NAV as determined by the issuer of the common/collective trust funds and are based on the fair value of the underlying investments held by the fund less its liabilities. The NAV is used as a practical expedient to estimate fair value. The common/collective trust funds do not have any unfunded commitments, and do not have any applicable liquidation periods or defined terms/periods to be held. The majority of the common/collective trust funds have limited withdrawal or redemption restrictions during the term of the investment. • Alternative Investments —Investments in real estate funds, private equity funds, debt funds and hedge funds are stated at fair value based on the NAV of the plan’s proportionate share of the partnership, joint venture or other alternative investment’s fair value as determined by reference to audited financial statements or NAV statements provided by the investment manager. The NAV, which is used as a practical expedient to estimate fair value, is adjusted for contributions and distributions occurring between the investment manager and Dominion Energy’s measurement date. These valuations also involve assumptions and methods that are reviewed, evaluated, and adjusted, if necessary, by Dominion Energy. Net Periodic Benefit (Credit) Cost The service cost component of net periodic benefit (credit) cost is reflected in other operations and maintenance expense in Dominion Energy’s Consolidated Statements of Income , except for $ 25 million, $ 28 million and $ 25 million for the years ended December 31, 2022, 2021 and 2020, respectively, presented in discontinued operations. The non-service cost components of net periodic benefit (credit) cost are reflected in other income in Dominion Energy’s Consolidated Statements of Income, except for $( 43 ) million, $( 34 ) million and $( 26 ) million for the years ended December 31, 2022, 2021 and 2020, respectively, presented in discontinued operations. The components of the provision for net periodic benefit (credit) cost and amounts recognized in other comprehensive income and regulatory assets and liabilities for Dominion Energy plans are as follows: Pension Benefits Other Postretirement Benefits Year Ended December 31, 2022 2021 2020 2022 2021 2020 (millions, except percentages) Service cost $ 142 $ 170 $ 173 $ 22 $ 25 $ 28 Interest cost 333 317 351 45 46 58 Expected return on plan assets ( 886 ) ( 834 ) ( 777 ) ( 191 ) ( 173 ) ( 156 ) Amortization of prior service (credit) cost — — 1 ( 38 ) ( 42 ) ( 49 ) Amortization of net actuarial (gain) loss 159 193 206 ( 2 ) 4 6 Settlements, curtailments and special termination (1) — 10 14 ( 8 ) — ( 59 ) Net periodic benefit (credit) cost $ ( 252 ) $ ( 144 ) $ ( 32 ) $ ( 172 ) $ ( 140 ) $ ( 172 ) Changes in plan assets and benefit obligations Current year net actuarial (gain) loss $ 726 $ ( 782 ) $ 166 $ 246 $ ( 282 ) $ ( 110 ) Prior service (credit) cost — — — — ( 13 ) ( 6 ) Settlements and curtailments (1) ( 3 ) ( 36 ) ( 81 ) 10 — 59 Less amounts included in net periodic benefit Amortization of net actuarial gain (loss) ( 159 ) ( 193 ) ( 206 ) 2 ( 4 ) ( 6 ) Amortization of prior service credit (cost) — — ( 1 ) 38 42 49 Sale of Hope ( 47 ) — — — — — Total recognized in other comprehensive $ 517 $ ( 1,011 ) $ ( 122 ) $ 296 $ ( 257 ) $ ( 14 ) Significant assumptions used to determine Discount rate 3.06 %- 3.19 % 2.73 %- 3.29 % 2.77 %- 3.63 % 3.04 %- 5.03 % 2.69 %- 2.80 % 3.07 %- 3.52 % Expected long-term rate of return on plan assets 7.00 %- 8.35 % 7.00 %- 8.45 % 7.00 %- 8.60 % 8.35 % 8.45 % 8.50 % Weighted average rate of increase for 4.51 % 4.53 % 4.23 % n/a n/a n/a Crediting interest rate for cash balance and similar 1.81 %- 1.94 % 1.93 %- 2.15 % 2.31 - 2.83 % n/a n/a n/a Healthcare cost trend rate (2) 6.25 % 6.25 % 6.25 % Rate to which the cost trend rate is assumed to (2) 5.00 % 5.00 % 5.00 % Year that the rate reaches the ultimate trend rate (2) 2026 - 2027 2026 - 2027 2025 - 2026 (1) 2022 amounts relate primarily to Dominion Energy’s sale of Hope. 2021 amounts relate primarily to the Dominion Energy executive nonqualified pension plan. 2020 amounts primarily relate to the GT&S Transaction. (2) Assumptions used to determine net periodic cost for the following year. The components of AOCI and regulatory assets and liabilities for Dominion Energy’s plans that have not been recognized as components of net periodic benefit (credit) cost are as follows: Pension Benefits Other At December 31, 2022 2021 2022 2021 (millions) Net actuarial loss $ 2,714 $ 2,198 $ 84 $ ( 166 ) Prior service (credit) cost 3 2 ( 157 ) ( 203 ) Total (1) $ 2,717 $ 2,200 $ ( 73 ) $ ( 369 ) (1) As of December 31, 2022, of the $ 2.7 billion and $( 73 ) million related to pension benefits and other postretirement benefits, $ 1.7 billion and $ 14 million, respectively, are included in AOCI, with the remainder included in regulatory assets and liabilities, except for $ 170 million presented in assets and liabilities held for sale. As of December 31, 2021, of the $ 2.2 billion and $( 369 ) million related to pension benefits and other postretirement benefits, $ 1.7 billion and $( 155 ) million, respectively, are included in AOCI, with the remainder included in regulatory assets and liabilities, except for $ 108 million presented in assets and liabilities held for sale. The expected long-term rates of return on plan assets, discount rates, healthcare cost trend rates and mortality are critical assumptions in determining net periodic benefit (credit) cost. Dominion Energy develops non-investment related assumptions, which are then compared to the forecasts of an independent investment advisor to ensure reasonableness. An internal committee selects the final assumptions used for Dominion Energy’s pension and other postretirement plans including discount rates, expected long-term rates of return, healthcare cost trend rates and mortality rates. Dominion Energy determines the expected long-term rates of return on plan assets for its pension plans and other postretirement benefit plans by using a combination of: • Expected inflation and risk-free interest rate assumptions; • Historical return analysis to determine long term historic returns as well as historic risk premiums for various asset classes; • Expected future risk premiums, asset classes’ volatilities and correlations; • Forward-looking return expectations derived from the yield on long-term bonds and the expected long-term returns of major capital market assumptions; and • Investment allocation of plan assets. Dominion Energy determines discount rates from analyses of AA/Aa rated bonds with cash flows matching the expected payments to be made under its plans. Mortality rates are developed from actual and projected plan experience for postretirement benefit plans. Dominion Energy’s actuary conducts an experience study periodically as part of the process to select its best estimate of mortality. Dominion Energy considers both standard mortality tables and improvement factors as well as the plans’ actual experience when selecting a best estimate. Assumed healthcare cost trend rates have a significant effect on the amounts reported for Dominion Energy’s retiree healthcare plans. Dominion Energy establishes the healthcare cost trend rate assumption based on analyses of various factors including the specific provisions of its medical plans, actual cost trends experienced and projected and demographics of plan participants. Virginia Power—Participation in Defined Benefit Plans Virginia Power employees are covered by the Dominion Energy Pension Plan described above. As a participating employer, Virginia Power is subject to Dominion Energy’s funding policy, which is to contribute annually an amount that is in accordance with ERISA. During 2022, 2021 and 2020, Virginia Power made payments to Dominion Energy of $ 172 million, $ 151 million and $ 313 million, respectively, related to its participation in the Dominion Energy Pension Plan. Virginia Power’s net periodic pension cost related to this plan was $ 72 million, $ 86 million and $ 118 million in 2022, 2021 and 2020, respectively. Net periodic benefit (credit) cost is reflected in other operations and maintenance expense in Virginia Power’s Consolidated Statements of Income. The funded status of various Dominion Energy subsidiary groups and employee compensation are the basis for determining the share of total pension costs for participating Dominion Energy subsidiaries. See Note 25 for Virginia Power amounts due to/from Dominion Energy related to this plan. Retiree healthcare and life insurance benefits, for Virginia Power employees are covered by the Dominion Energy Retiree Health and Welfare Plan described above. Virginia Power’s net periodic benefit (credit) cost related to this plan was $( 81 ) million, $( 72 ) million and $ ( 58 ) million in 2022, 2021 and 2020, respectively. Net periodic benefit (credit) cost is reflected in other operations and maintenance expense in Virginia Power’s Consolidated Statements of Income. Employee headcount is the basis for determining the share of total other postretirement benefit costs for participating Dominion Energy subsidiaries. See Note 25 for Virginia Power amounts due to/from Dominion Energy related to this plan. Dominion Energy holds investments in trusts to fund employee benefit payments for the pension and other postretirement benefit plans in which Virginia Power’s employees participate. Any investment-related declines in these trusts will result in future increases in the net periodic cost recognized for such employee benefit plans and will be included in the determination of the amount of cash that Virginia Power will provide to Dominion Energy for its share of employee benefit plan contributions. Virginia Power funds other postretirement benefit costs through VEBAs. During 2022, 2021 and 2020, Virginia Power made no contributions to the VEBAs and does no t expect to contribute to the VEBAs in 2023. Defined Contribution Plans Dominion Energy also sponsors defined contribution employee savings plans that cover substantially all employees. During 2022, 2021 and 2020, Dominion Energy recognized $ 75 million, $ 65 million and $ 67 million, respectively, as employer matching contributions to these plans, excluding discontinued operations. Virginia Power also participates in these employee savings plans. During 2022, 2021 and 2020, Virginia Power recognized $ 22 million, $ 20 million and $ 19 million, respectively, as employer matching contributions to these plans.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2022
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	NOTE 23. COMMITMENTS AND CONTINGENCIES As a result of issues generated in the ordinary course of business, the Companies are involved in legal proceedings before various courts and are periodically subject to governmental examinations (including by regulatory authorities), inquiries and investigations. Certain legal proceedings and governmental examinations involve demands for unspecified amounts of damages, are in an initial procedural phase, involve uncertainty as to the outcome of pending appeals or motions, or involve significant factual issues that need to be resolved, such that it is not possible for the Companies to estimate a range of possible loss. For such matters that the Companies cannot estimate, a statement to this effect is made in the description of the matter. Other matters may have progressed sufficiently through the litigation or investigative processes such that the Companies are able to estimate a range of possible loss. For legal proceedings and governmental examinations that the Companies are able to reasonably estimate a range of possible losses, an estimated range of possible loss is provided, in excess of the accrued liability (if any) for such matters. The Companies maintain various insurance programs, including general liability insurance coverage which provides coverage for personal injury or wrongful death cases. Any accrued liability is recorded on a gross basis with a receivable also recorded for any probable insurance recoveries. Estimated ranges of loss are inclusive of legal fees and net of any anticipated insurance recoveries. Any estimated range is based on currently available information and involves elements of judgment and significant uncertainties. Any estimated range of possible loss may not represent the Companies’ maximum possible loss exposure. The circumstances of such legal proceedings and governmental examinations will change from time to time and actual results may vary significantly from the current estimate. For current proceedings not specifically reported below, management does not anticipate that the liabilities, if any, arising from such proceedings would have a material effect on the Companies’ financial position, liquidity or results of operations. Environmental Matters The Companies are subject to costs resulting from a number of federal, state and local laws and regulations designed to protect human health and the environment. These laws and regulations affect future planning and existing operations. They can result in increased capital, operating and other costs as a result of compliance, remediation, containment and monitoring obligations. Air The CAA, as amended, is a comprehensive program utilizing a broad range of regulatory tools to protect and preserve the nation’s air quality. At a minimum, states are required to establish regulatory programs to meet applicable requirements of the CAA. However, states may choose to develop regulatory programs that are more restrictive. Many of the Companies’ facilities are subject to the CAA’s permitting and other requirements. Ozone Standards The EPA published final non-attainment designations for the October 2015 ozone standard in June 2018 with states required to develop plans to address the new standard. Certain states in which the Companies operate have developed plans, and had such plans approved or partially approved by the EPA, which are not expected to have a material impact on the Companies’ results of operations or cash flows. However, until implementation plans for the standard are developed and approved for all states in which the Companies operate, the Companies are unable to predict whether or to what extent the new rules will ultimately require additional controls. The expenditures required to implement additional controls could have a material impact on the Companies’ results of operations and cash flows. ACE Rule In July 2019, the EPA published the final rule informally referred to as the ACE Rule, as a replacement for the Clean Power Plan. The ACE Rule regulated GHG emissions from existing coal-fired power plants pursuant to Section 111(d) of the CAA and required states to develop plans by July 2022 establishing unit-specific performance standards for existing coal-fired power plants. In January 2021, the U.S. Court of Appeals for the D.C. Circuit vacated the ACE Rule and remanded it to the EPA. This decision would take effect upon issuance of the court’s mandate. In March 2021, the court issued a partial mandate vacating and remanding all parts of the ACE Rule except for the portion of the ACE Rule that repealed the Clean Power Plan. In October 2021, the U.S. Supreme Court agreed to hear a challenge of the U.S. Court of Appeals for the D.C. Circuit’s decision on the ACE Rule. In June 2022, the U.S. Supreme Court reversed the D.C. Circuit’s decision on the ACE Rule and remanded the case back to the D.C. Circuit. Until the case is resolved by the D.C. Circuit and/or the EPA issues new rulemaking, the Companies cannot predict an impact to its operations, financial condition and/or cash flows. Carbon Regulations In August 2016, the EPA issued a draft rule proposing to reaffirm that a source’s obligation to obtain a PSD or Title V permit for GHGs is triggered only if such permitting requirements are first triggered by non-GHG, or conventional, pollutants that are regulated by the New Source Review program, and exceed a significant emissions rate of 75,000 tons per year of CO 2 equivalent emissions. Until the EPA ultimately takes final action on this rulemaking, the Companies cannot predict the impact to their results of operations, financial condition and/or cash flows. In December 2018, the EPA proposed revised Standards of Performance for Greenhouse Gas Emissions from New, Modified, and Reconstructed Stationary Sources. The proposed rule would amend the previous determination that the best system of emission reduction for newly constructed coal-fired steam generating units is no longer partial carbon capture and storage. Instead, the proposed revised best system of emission reduction for this source category is the most efficient demonstrated steam cycle (e.g., supercritical steam conditions for large units and subcritical steam conditions for small units) in combination with best operating practices. The proposed revision to the performance standards for coal-fired steam generating units remains pending. Until the EPA ultimately takes final action on this rulemaking, the Companies cannot predict the impact to their results of operations, financial condition and/or cash flows. Water The CWA, as amended, is a comprehensive program requiring a broad range of regulatory tools including a permit program to authorize and regulate discharges to surface waters with strong enforcement mechanisms. The Companies must comply with applicable aspects of the CWA programs at their operating facilities. Regulation 316(b) In October 2014, the final regulations under Section 316(b) of the CWA that govern existing facilities and new units at existing facilities that employ a cooling water intake structure and that have flow levels exceeding a minimum threshold became effective. The rule establishes a national standard for impingement based on seven compliance options, but forgoes the creation of a single technology standard for entrainment. Instead, the EPA has delegated entrainment technology decisions to state regulators. State regulators are to make case-by-case entrainment technology determinations after an examination of five mandatory facility-specific factors, including a social cost-benefit test, and six optional facility-specific factors. The rule governs all electric generating stations with water withdrawals above two MGD, with a heightened entrainment analysis for those facilities over 125 MGD. Dominion Energy and Virginia Power currently have 15 and nine facilities, respectively, that are subject to the final regulations. Dominion Energy is also working with the EPA and state regulatory agencies to assess the applicability of Section 316(b) to eight hydroelectric facilities, including three Virginia Power facilities. The Companies anticipate that they may have to install impingement control technologies at certain of these stations that have once-through cooling systems. The Companies are currently evaluating the need or potential for entrainment controls under the final rule as these decisions will be made on a case-by-case basis after a thorough review of detailed biological, technological, and cost benefit studies. DESC is conducting studies and implementing plans as required by the rule to determine appropriate intake structure modifications at certain facilities to ensure compliance with this rule. While the impacts of this rule could be material to the Companies’ results of operations, financial condition and/or cash flows, the existing regulatory frameworks in South Carolina and Virginia provide rate recovery mechanisms that could substantially mitigate any such impacts for the regulated electric utilities. Effluent Limitations Guidelines In September 2015, the EPA released a final rule to revise the Effluent Limitations Guidelines for the Steam Electric Power Generating Category. The final rule established updated standards for wastewater discharges that apply primarily at coal and oil steam generating stations. Affected facilities are required to convert from wet to dry or closed cycle coal ash management, improve existing wastewater treatment systems and/or install new wastewater treatment technologies in order to meet the new discharge limits. In April 2017, the EPA granted two separate petitions for reconsideration of the Effluent Limitations Guidelines final rule and stayed future compliance dates in the rule. Also in April 2017, the U.S. Court of Appeals for the Fifth Circuit granted the EPA’s request for a stay of the pending consolidated litigation challenging the rule while the EPA addresses the petitions for reconsideration. In September 2017, the EPA signed a rule to postpone the earliest compliance dates for certain waste streams regulations in the Effluent Limitations Guidelines final rule from November 2018 to November 2020; however, the latest date for compliance for these regulations was December 2023. In October 2020, the EPA released the final rule that extends the latest dates for compliance. Individual facilities’ compliance dates will vary based on circumstances and the determination by state regulators and may range from 2021 to 2028 . While the impacts of this rule could be material to the Companies’ results of operations, financial condition and/or cash flows, the existing regulatory frameworks in South Carolina and Virginia provide rate recovery mechanisms that could substantially mitigate any such impacts for the regulated electric utilities. Waste Management and Remediation The operations of the Companies are subject to a variety of state and federal laws and regulations governing the management and disposal of solid and hazardous waste, and release of hazardous substances associated with current and/or historical operations. The CERCLA, as amended, and similar state laws, may impose joint, several and strict liability for cleanup on potentially responsible parties who owned, operated or arranged for disposal at facilities affected by a release of hazardous substances. In addition, many states have created programs to incentivize voluntary remediation of sites where historical releases of hazardous substances are identified and property owners or responsible parties decide to initiate cleanups. From time to time, the Companies may be identified as a potentially responsible party in connection with the alleged release of hazardous substances or wastes at a site. Under applicable federal and state laws, the Companies could be responsible for costs associated with the investigation or remediation of impacted sites, or subject to contribution claims by other responsible parties for their costs incurred at such sites. The Companies also may identify, evaluate and remediate other potentially impacted sites under voluntary state programs. Remediation costs may be subject to reimbursement under the Companies’ insurance policies, rate recovery mechanisms, or both. Except as described below, the Companies do not believe these matters will have a material effect on results of operations, financial condition and/or cash flows. Dominion Energy has determined that it is associated with former manufactured gas plant sites, including certain sites associated with Virginia Power. At 13 sites associated with Dominion Energy, remediation work has been substantially completed under federal or state oversight. Where required, the sites are following state-approved groundwater monitoring programs. Dominion Energy commenced remediation activities at one site in the second quarter of 2022. In addition, Dominion Energy has proposed remediation plans for one site at Virginia Power and expects to commence remediation activities in 2023 depending on receipt of final permits and approvals. At December 31, 2022 and 2021, Dominion Energy had $ 47 million and $ 45 million, respectively, of reserves recorded, of which $ 1 million in both periods is reflected in liabilities held for sale. Dominion Energy’s reserves include charges of $ 14 million ($ 11 million after-tax) recorded in 2020, in other operations and maintenance expense in the Consolidated Statements of Income, except for $ 4 million ($ 3 million after-tax) presented in discontinued operations. At both December 31, 2022 and 2021, Virginia Power had $ 25 million of reserves recorded. Virginia Power’s reserves include charges of $ 10 million ($ 7 million after-tax) recorded in 2020, in other operations and maintenance expense in the Consolidated Statements of Income. Dominion Energy is associated with 12 additional sites, including two associated with Virginia Power, which are not under investigation by any state or federal environmental agency nor the subject of any current or proposed plans to perform remediation activities. Due to the uncertainty surrounding such sites, the Companies are unable to make an estimate of the potential financial statement impacts. Other Legal Matters The Companies are defendants in a number of lawsuits and claims involving unrelated incidents of property damage and personal injury. Due to the uncertainty surrounding these matters, the Companies are unable to make an estimate of the potential financial statement impacts; however, they could have a material impact on results of operations, financial condition and/or cash flows. SCANA Legal Proceedings The following describes certain legal proceedings involving Dominion Energy, SCANA or DESC relating primarily to events occurring before closing of the SCANA Combination. No reference to, or disclosure of, any proceeding, item or matter described below shall be construed as an admission or indication that such proceeding, item or matter is material. For certain of these matters, and unless otherwise noted therein, Dominion Energy is unable to estimate a reasonable range of possible loss and the related financial statement impacts, but for any such matter there could be a material impact to its results of operations, financial condition and/or cash flows. For the matters for which Dominion Energy is able to reasonably estimate a probable loss, Dominion Energy’s Consolidated Balance Sheets at December 31, 2022 and 2021 include reserves of $ 94 million and $ 274 million, respectively, included in other current liabilities, and insurance receivables of $ 68 million and $ 118 million, respectively, included within other receivables. These balances at December 31, 2022 and 2021 include $ 68 million and $ 85 million, respectively, of offsetting reserves and insurance receivables related to personal injury or wrongful death cases which are currently pending. During the year ended December 31, 2022, charges included in Dominion Energy’s Consolidated Statements of Income were inconsequential. Dominion Energy’s Consolidated Statements of Income for the years ended December 31, 2021 and 2020 include charges of $ 100 million ($ 75 million after-tax) and $ 90 million ($ 68 million after-tax), respectively, within impairment of assets and other charges (reflected in the Corporate and Other segment). In addition, Dominion Energy’s Consolidated Statements of Income for the year ended December 31, 2020 include charges of $ 25 million ($ 25 million after-tax) within other income (reflected in the Corporate and Other segment). SCANA Shareholder Litigation In September 2017, a shareholder derivative action was filed against certain former executive officers and directors of SCANA in the State Court of Common Pleas in Richland County, South Carolina (the State Court Derivative Case). In September 2018, this action was consolidated with another action in the Business Court Pilot Program in Richland County. The plaintiffs allege, among other things, that the defendants breached their fiduciary duties to shareholders by their gross mismanagement of the NND Project, and that the defendants were unjustly enriched by bonuses they were paid in connection with the project. In January 2019, the defendants filed a motion to dismiss the consolidated action. In February 2019, one action was voluntarily dismissed. In March 2020, the court denied the defendants’ motion to dismiss. In April 2020, the defendants filed a notice of appeal with the South Carolina Court of Appeals and a petition with the Supreme Court of South Carolina seeking appellate review of the denial of the motion to dismiss. In June 2020, the plaintiffs filed a motion to dismiss the appeal with the South Carolina Court of Appeals, which was granted in July 2020. In August 2020, the Supreme Court of South Carolina denied the defendants’ petition seeking appellate review. Also in August 2020, the defendants filed a petition for rehearing with the South Carolina Court of Appeals relating to the July 2020 ruling by the court, which was denied in October 2020. In November 2020, SCANA filed a petition of certiorari with the Supreme Court of South Carolina seeking appellate review of the denial of SCANA’s motion to dismiss. This petition was denied in June 2021. Also in June 2021, the parties reached an agreement in principle in the amount of $ 33 million to resolve this matter, subject to court approval. This settlement was reached in contemplation of and to be utilized to satisfy a portion of the Federal Court Merger Case and the State Court Merger Case discussed below. In November 2021, the parties executed a settlement agreement and filed with the State Court of Common Pleas in Richland County, South Carolina for approval. In June 2022, the State Court of Common Pleas in Richland County, South Carolina issued final approval of the settlement agreement with the funds utilized to satisfy a portion of the State Court Merger Case as discussed below. In January 2018, a purported class action was filed against SCANA, Dominion Energy and certain former executive officers and directors of SCANA in the State Court of Common Pleas in Lexington County, South Carolina (the City of Warren Lawsuit). The plaintiff alleges, among other things, that defendants violated their fiduciary duties to shareholders by executing a merger agreement that would unfairly deprive plaintiffs of the true value of their SCANA stock, and that Dominion Energy aided and abetted these actions. Among other remedies, the plaintiff seeks to enjoin and/or rescind the merger. In February 2018, a purported class action was filed against Dominion Energy and certain former directors of SCANA and DESC in the State Court of Common Pleas in Richland County, South Carolina (the Metzler Lawsuit). The allegations made and the relief sought by the plaintiffs are substantially similar to that described for the City of Warren Lawsuit. In September 2019, the U.S. District Court for the District of South Carolina granted the plaintiffs’ motion to consolidate the City of Warren Lawsuit and the Metzler Lawsuit (the Federal Court Merger Case). In October 2019, the plaintiffs filed an amended complaint against certain former directors and executive officers of SCANA and DESC, which stated substantially similar allegations to those in the City of Warren Lawsuit and the Metzler Lawsuit as well as an inseparable fraud claim. In November 2019, the defendants filed a motion to dismiss. In April 2020, the U.S. District Court for the District of South Carolina denied the motion to dismiss. In May 2020, SCANA filed a motion to intervene, which was denied in August 2020. In September 2020, SCANA filed a notice of appeal with the U.S. Court of Appeals for the Fourth Circuit. In June 2021, the parties reached an agreement in principle in the amount of $ 63 million to resolve this matter as well as the State Court Merger Case described below, subject to court approval. This settlement was reached in contemplation of and to be partially satisfied by the State Court Derivative Case settlement described above. In November 2021, the parties executed a settlement agreement, as described above relating to this matter as well as the State Court Derivative Case and the State Court Merger Case, and filed with the State Court of Common Pleas in Richland County, South Carolina for approval. In June 2022, this case was dismissed in connection with the final approval by the State Court of Common Pleas in Richland County, South Carolina of the settlement agreement. In May 2019, a case was filed against certain former executive officers and directors of SCANA in the State Court of Common Pleas in Richland County, South Carolina (the State Court Merger Case). The plaintiff alleges, among other things, that the defendants breached their fiduciary duties to shareholders by their gross mismanagement of the NND Project, were unjustly enriched by the bonuses they were paid in connection with the project and breached their fiduciary duties to secure and obtain the best price for the sale of SCANA. Also in May 2019, the case was removed to the U.S. District Court of South Carolina by the non-South Carolina defendants. In June 2019, the plaintiffs filed a motion to remand the case to state court. In January 2020, the case was remanded to state court. In February 2020, the defendants filed a motion to dismiss. In June 2021, the parties reached an agreement in principle as described above relating to this matter as well as the Federal Court Merger Case and the State Court Derivative Case. In November 2021, the parties executed a settlement agreement, as described above relating to this matter as well as the State Court Derivative Case and the Federal Court Merger Case, and filed with the State Court of Common Pleas in Richland County, South Carolina for approval. In June 2022, the State Court of Common Pleas in Richland County, South Carolina issued final approval of the settlement agreement. Also in June 2022, Dominion Energy utilized the $ 33 million of insurance proceeds from the State Court Derivative Case settlement, the issuance of 0.4 million shares of its common stock and the payment of $ 2 million in cash to satisfy its obligations under the settlement agreement. Employment Class Actions and Indemnification In August 2017, a case was filed in the U.S. District Court for the District of South Carolina on behalf of persons who were formerly employed at the NND Project. In July 2018, the court certified this case as a class action. In February 2019, certain of these plaintiffs filed an additional case, which case has been dismissed and the plaintiffs have joined the case filed August 2017. The plaintiffs allege, among other things, that SCANA, DESC, Fluor Corporation and Fluor Enterprises, Inc. violated the Worker Adjustment and Retraining Notification Act in connection with the decision to stop construction at the NND Project. The plaintiffs allege that the defendants failed to provide adequate advance written notice of their terminations of employment and are seeking damages, which could be as much as $ 100 million for 100 % of the NND Project. In January 2021, the U.S. District Court for the District of South Carolina granted summary judgment in favor of SCANA, DESC, Fluor Corporation and Fluor Enterprises, Inc. In February 2021, the plaintiffs filed a notice of appeal with the U.S. Court of Appeals for the Fourth Circuit. In November 2021, the U.S Court of Appeals for the Fourth Circuit affirmed the lower court ruling. In March 2022, the deadline to file an appeal to the Supreme Court of the United States expired. In September 2018, a case was filed in the State Court of Common Pleas in Fairfield County, South Carolina by Fluor Enterprises, Inc. and Fluor Daniel Maintenance Services, Inc. against DESC and Santee Cooper. The plaintiffs make claims for indemnification, breach of contract and promissory estoppel arising from, among other things, the defendants' alleged failure and refusal to defend and indemnify the Fluor defendants in the aforementioned case. As a result of the ruling in favor of the defendants in the aforementioned case, DESC was able to resolve Fluor’s claims for an inconsequential amount. Governmental Proceedings and Investigations In June 2018, DESC received a notice of proposed assessment of approximately $ 410 million, excluding interest, from the SCDOR following its audit of DESC’s sales and use tax returns for the periods September 1, 2008 through December 31, 2017. The proposed assessment, which includes 100 % of the NND Project, is based on the SCDOR’s position that DESC’s sales and use tax exemption for the NND Project does not apply because the facility will not become operational. In December 2020, the parties reached an agreement in principle in the amount of $ 165 million to resolve this matter. In June 2021, the parties executed a settlement agreement which allows DESC to fund the settlement amount through a combination of cash, shares of Dominion Energy common stock or real estate with an initial payment of at least $ 43 million in shares of Dominion Energy common stock. In August 2021, Dominion Energy issued 0.6 million shares of its common stock to satisfy DESC’s obligation for the initial payment under the settlement agreement. In May 2022, Dominion Energy issued an additional 0.9 million shares of its common stock to partially satisfy DESC’s remaining obligation under the settlement agreement. In June 2022, DESC requested approval from the South Carolina Commission to transfer certain real estate with a total settlement value of $ 51 million to satisfy its remaining obligation under the settlement agreement. In July 2022, the South Carolina Commission voted to approve the request and issued its final order in August 2022. In September 2022, DESC transferred certain non-utility property with a fair value of $ 28 million to the SCDOR under the settlement agreement, resulting in a gain of $ 18 million ($ 14 million after-tax) recorded in losses (gains) on sales of assets (reflected in Dominion Energy South Carolina) in Dominion Energy’s Consolidated Statements of Income for the year ended December 31, 2022. In December 2022, DESC transferred additional utility property with a fair value of $ 3 million to the SCDOR, resulting in an inconsequential gain. In October 2022, DESC filed for approval to transfer the remaining real estate with FERC which was received in November 2022. The transfers of such utility properties are expected to be completed by early 2024 and to result in a gain of approximately $ 20 million upon completion. Matters Fully Resolved Prior to 2022 Ratepayer Class Actions In May 2018, a consolidated complaint against DESC, SCANA and the State of South Carolina was filed in the State Court of Common Pleas in Hampton County, South Carolina (the DESC Ratepayer Case). The plaintiffs alleged, among other things, that DESC was negligent and unjustly enriched, breached alleged fiduciary and contractual duties and committed fraud and misrepresentation in failing to properly manage the NND Project, and that DESC committed unfair trade practices and violated state anti-trust laws. In December 2018, the State Court of Common Pleas in Hampton County entered an order granting preliminary approval of a class action settlement. The court entered an order granting final approval of the settlement in June 2019, which became effective in July 2019. The settlement agreement, contingent upon the closing of the SCANA Combination, provided that SCANA and DESC establish an escrow account and proceeds from the escrow account would be distributed to the plaintiffs, after payment of certain taxes, attorneys' fees and other expenses and administrative costs. The escrow account would include (1) up to $ 2.0 billion, net of a credit of up to $ 2.0 billion in future electric bill relief, which would inure to the benefit of the escrow account in favor of class members over a period of time established by the South Carolina Commission in its order related to matters before the South Carolina Commission related to the NND Project, (2) a cash payment of $ 115 million and (3) the transfer of certain DESC-owned real estate or sales proceeds from the sale of such properties, which counsel for the plaintiffs estimated to have an aggregate value between $ 60 million and $ 85 million. At the closing of the SCANA Combination, SCANA and DESC funded the cash payment portion of the escrow account. In July 2019, DESC transferred $ 117 million representing the cash payment, plus accrued interest, to the plaintiffs. Through August 2020, property, plant and equipment with a net recorded value of $ 27 million had been transferred to the plaintiffs in coordination with the court-appointed real estate trustee to satisfy the settlement agreement. In September 2020, the court entered an order approving a final resolution of the transfer of real estate or sales proceeds with a cash contribution of $ 38.5 million by DESC and the conveyance of property, plant and equipment with a net recorded value of $ 3 million, which was completed by DESC in October 2020. In December 2021, the court approved a motion for and DESC completed the repurchase of $ 8 million of property, plant and equipment previously transferred to the plaintiffs. In September 2017, a purported class action was filed by Santee Cooper ratepayers against Santee Cooper, DESC, Palmetto Electric Cooperative, Inc. and Central Electric Power Cooperative, Inc. in the State Court of Common Pleas in Hampton County, South Carolina (the Santee Cooper Ratepayer Case). The allegations were substantially similar to those in the DESC Ratepayer Case. In March 2020, the parties executed a settlement agreement relating to this matter as well as the Luquire Case and the Glibowski Case described below. The settlement agreement provided that Dominion Energy and Santee Cooper establish a fund for the benefit of class members in the amount of $ 520 million, of which Dominion Energy’s portion was $ 320 million of shares of Dominion Energy common stock. In July 2020, the court issued a final approval of the settlement agreement. In September 2020, Dominion Energy issued $ 322 million of shares of Dominion Energy common stock to satisfy its obligation under the settlement agreement, including interest charges. In July 2019, a similar purported class action was filed by certain Santee Cooper ratepayers against DESC, SCANA, Dominion Energy and former directors and officers of SCANA in the State Court of Common Pleas in Orangeburg, South Carolina (the Luquire Case). In August 2019, DESC, SCANA and Dominion Energy were voluntarily dismissed from the case. The claims were similar to the Santee Cooper Ratepayer Case. In March 2020, the parties executed a settlement agreement as described above relating to this matter as well as the Santee Cooper Ratepayer Case and the Glibowski Case. This case was dismissed as part of the Santee Cooper Ratepayer Case settlement described above. RICO Class Action In January 2018, a purported class action was filed, and subsequently amended, against SCANA, DESC and certain former executive officers in the U.S. District Court for the District of South Carolina (the Glibowski Case). The plaintiff alleged, among other things, that SCANA, DESC and the individual defendants participated in an unlawful racketeering enterprise in violation of RICO and conspired to violate RICO by fraudulently inflating utility bills to generate unlawful proceeds. In March 2020, the parties executed a settl

Credit Risk

Credit Risk	12 Months Ended
	Dec. 31, 2022
Risks And Uncertainties [Abstract]
Credit Risk	NOTE 24. CREDIT RISK Dominion Energy As a diversified energy company, Dominion Energy transacts primarily with major companies in the energy industry and with commercial and residential energy consumers. These transactions principally occur in the Northeast, mid-Atlantic, Midwest and Rocky Mountain and Southeast regions of the U.S. Dominion Energy does not believe that this geographic concentration contributes significantly to its overall exposure to credit risk. In addition, as a result of its large and diverse customer base, Dominion Energy is not exposed to a significant concentration of credit risk for receivables arising from electric and gas utility operations. Dominion Energy’s exposure to credit risk is concentrated primarily within its energy marketing and price risk management activities, as Dominion Energy transacts with a smaller, less diverse group of counterparties and transactions may involve large notional volumes and potentially volatile commodity prices. Energy marketing and price risk management activities include marketing of nonregulated generation output, structured transactions and the use of financial contracts for enterprise-wide hedging purposes. Gross credit exposure for each counterparty is calculated as outstanding receivables plus any unrealized on- or off-balance sheet exposure, taking into account contractual netting rights. Gross credit exposure is calculated prior to the application of any collateral. At December 31, 2022, Dominion Energy’s credit exposure totaled $ 281 million. Of this amount, investment grade counterparties, including those internally rated, represented 89 %, and no single counterparty, whether investment grade or non-investment grade, exceeded $ 77 million of exposure. Virginia Power Virginia Power sells electricity and provides distribution and transmission services to customers in Virginia and northeastern North Carolina. Management believes that this geographic concentration risk is mitigated by the diversity of Virginia Power’s customer base, which includes residential, commercial and industrial customers, as well as rural electric cooperatives and municipalities. Credit risk associated with trade accounts receivable from energy consumers is limited due to the large number of customers. Virginia Power’s exposure to potential concentrations of credit risk results primarily from sales to wholesale customers. Virginia Power’s gross credit exposure for each counterparty is calculated as outstanding receivables plus any unrealized on- or off-balance sheet exposure, taking into account contractual netting rights. Gross credit exposure is calculated prior to the application of collateral. At December 31, 2022, Virginia Power’s credit exposure totaled $ 25 million. Of this amount, investment grade counterparties, including those internally rated, represented 76 %, and no single counterparty exceeded $ 8 million of exposure. Credit-Related Contingent Provisions Certain of Dominion Energy and Virginia Power's derivative instruments contain credit-related contingent provisions. These provisions require Dominion Energy and Virginia Power to provide collateral upon the occurrence of specific events, primarily a credit rating downgrade. If the credit-related contingent features underlying these instruments that are in a liability position and not fully collateralized with cash were fully triggered, Dominion Energy and Virginia Power would have been required to post additional collateral to its counterparties of $ 140 million and $ 28 million, respectively, as of December 31, 2022, and $ 31 million and $ 22 million, respectively, as of December 31, 2021. The collateral that would be required to be posted includes the impacts of any offsetting asset positions and any amounts already posted for derivatives, non-derivative contracts and derivatives elected under the normal purchases and normal sales exception, per contractual terms. Dominion Energy and Virginia Power had both posted collateral of $ 72 million at December 31, 2022, and $ 66 million and $ 54 million, respectively, at December 31, 2021, related to derivatives with credit-related contingent provisions that are in a liability position and not fully collateralized with cash. In addition, Dominion Energy and Virginia Power had both posted letters of credit as collateral with counterparties covering $ 20 million of fair value of derivative instruments in a liability position at December 31, 2022. The aggregate fair value of all derivative instruments with credit-related contingent provisions that are in a liability position and not fully collateralized with cash for Dominion Energy and Virginia Power was $ 212 million and $ 99 million, respectively, as of December 31, 2022 and $ 97 million and $ 76 million, respectively, as of December 31, 2021, which does not include the impact of any offsetting asset positions. See Note 7 for further information about derivative instruments.

Related-Party Transactions

Related-Party Transactions	12 Months Ended
	Dec. 31, 2022
Related Party Transactions [Abstract]
Related-Party Transactions	NOTE 25. RELATED-PARTY TRANSACTIONS Dominion Energy’s transactions with equity method investments are described in Note 9. Virginia Power engages in related party transactions primarily with other Dominion Energy subsidiaries (affiliates). Virginia Power’s receivable and payable balances with affiliates are settled based on contractual terms or on a monthly basis, depending on the nature of the underlying transactions. Virginia Power is included in Dominion Energy’s consolidated federal income tax return and, where applicable, combined income tax returns for Dominion Energy are filed in various states. See Note 2 for further information. A discussion of Virginia Power's significant related party transactions follows. Virginia Power transacts with affiliates for certain quantities of natural gas and other commodities in the ordinary course of business. Virginia Power also enters into certain commodity derivative contracts with affiliates. Virginia Power uses these contracts, which are principally comprised of forward commodity purchases, to manage commodity price risks associated with purchases of natural gas. See Notes 7 and 20 for more information. At December 31, 2022, Virginia Power’s derivative assets and liabilities with affiliates were $ 33 million and $ 31 million, respectively. At December 31, 2021, Virginia Power’s derivative assets and liabilities with affiliates were $ 29 million and $ 6 million, respectively. Virginia Power participates in certain Dominion Energy benefit plans as described in Note 22. At December 31, 2022 and 2021, Virginia Power’s amounts due to Dominion Energy associated with the Dominion Energy Pension Plan and reflected in noncurrent pension and other postretirement benefit liabilities in the Consolidated Balance Sheets were $ 422 million and $ 522 million, respectively. At December 31, 2022 and 2021, Virginia Power’s amounts due from Dominion Energy associated with the Dominion Energy Retiree Health and Welfare Plan and reflected in noncurrent pension and other postretirement benefit assets in the Consolidated Balance Sheets were $ 518 million and $ 431 million, respectively. DES and other affiliates provide accounting, legal, finance and certain administrative and technical services to Virginia Power. In addition, Virginia Power provides certain services to affiliates, including charges for facilities and equipment usage. The financial statements for all years presented include costs for certain general, administrative and corporate expenses assigned by DES to Virginia Power on the basis of direct and allocated methods in accordance with Virginia Power’s services agreements with DES. Where costs incurred cannot be determined by specific identification, the costs are allocated based on the proportional level of effort devoted by DES resources that is attributable to the entity, determined by reference to number of employees, salaries and wages and other similar measures for the relevant DES service. Management believes the assumptions and methodologies underlying the allocation of general corporate overhead expenses are reasonable. Presented below are Virginia Power’s significant transactions with DES and other affiliates: Year Ended December 31, 2022 2021 2020 (millions) Commodity purchases from affiliates $ 1,423 $ 742 $ 569 Services provided by affiliates (1) 519 494 455 Services provided to affiliates 18 18 18 (1) Includes capitalized expenditures of $ 177 million, $ 161 million and $ 141 million for the years ended December 31, 2022, 2021 and 2020, respectively. Virginia Power has borrowed funds from Dominion Energy under short-term borrowing arrangements. In November 2022, Virginia Power amended its intercompany credit facility with Dominion Energy to increase the maximum capacity to $ 3.0 billion. There were $ 2.0 billion and $ 699 million in short-term demand note borrowings from Dominion Energy as of December 31, 2022 and 2021, respectively. The weighted-average interest rate of these borrowings was 4.68 % and 0.26 % at December 31, 2022 and 2021, respectively. Virginia Power had no outstanding borrowings, net of repayments under the Dominion Energy money pool for its nonregulated subsidiaries as of December 31, 2022 and 2021. Interest charges related to Virginia Power’s borrowings from Dominion Energy were $ 15 million for the year ended December 31, 2022 and $ 1 million for both the years ended December 31, 2021 and 2020. There were no issuances of Virginia Power’s common stock to Dominion Energy in 2022, 2021 or 2020. In January 2023, Virginia Power entered into a lease contract with an affiliated entity for the use of a Jones Act compliant offshore wind installation vessel currently under development with commencement of the 20-month lease term in August 2025 at a total cost of approximately $ 240 million plus ancillary services.

Operating Segments

Operating Segments	12 Months Ended
	Dec. 31, 2022
Segment Reporting [Abstract]
Operating Segments	NOTE 26. OPERATING SEGMENTS The Companies are organized primarily on the basis of products and services sold in the U.S. A description of the operations included in the Companies’ primary operating segments effective September 2023 is as follows: Primary Operating Segment Description of Operations Dominion Energy Virginia Power Dominion Energy Virginia Regulated electric distribution X X Regulated electric transmission X X Regulated electric generation fleet (1) X X Dominion Energy South Carolina Regulated electric distribution X Regulated electric transmission X Regulated electric generation fleet X Regulated gas distribution and storage X Contracted Energy (2) Nonregulated electric generation fleet (3) X (1) Includes Virginia Power’s non-jurisdictional solar generation operations. (2) Includes renewable natural gas operations. (3) Includes solar generation facility development operations. In addition to the operating segments above, the Companies also report a Corporate and Other segment. Dominion Energy The Corporate and Other Segment of Dominion Energy includes, effective September 2023, its corporate, service company and other functions (including unallocated debt) as well as its noncontrolling interest in Dominion Privatization and its nonregulated retail energy marketing operations (prior to December 2021), including its noncontrolling interest in Wrangler (through March 2022) and Hope (through August 2022). In addition, Corporate and Other includes specific items attributable to Dominion Energy’s operating segments that are not included in profit measures evaluated by executive management in assessing the segments’ performance or in allocating resources, as well as the net impact of the operations included in the East Ohio, PSNC and Questar Gas Transactions, its noncontrolling interest in Cove Point and gas transmission and storage operations, including its noncontrolling interest in Atlantic Coast Pipeline, reported as discontinued operations which are discussed in Notes 3 and 9. In 2022, Dominion Energy reported after-tax net expenses of $ 1.7 billion in the Corporate and Other segment, including $ 1.7 billion of after-tax net expenses for specific items with $ 2.9 billion of after tax-net expenses attributable to its operating segments. The net expenses for specific items attributable to Dominion Energy’s operating segments in 2022 primarily related to the impact of the following items: • A $ 1.5 billion ($ 1.1 billion after-tax) charge associated with the impairment of certain nonregulated solar generation facilities, attributable to Contracted Energy; • A $ 649 million ($ 513 million after-tax) loss associated with the sale of Kewaunee, attributable to Contracted Energy; • A $ 559 million ($ 451 million after-tax) loss related to investments in nuclear decommissioning trust funds, attributable to: • Contracted Energy ($ 393 million after-tax); and • Dominion Energy Virginia ($ 58 million after-tax); • A $ 243 million ($ 181 million after-tax) charge for amortization of a regulatory asset established in connection with the settlement of the 2021 Triennial Review, attributable to Dominion Energy Virginia; • A $ 213 million ($ 159 million after-tax) charge for RGGI compliance costs deemed recovered through base rates, attributable to Dominion Energy Virginia; • A $ 191 million ($ 142 million after-tax) charge in connection with a comprehensive settlement agreement for Virginia fuel expenses, attributable to Dominion Energy Virginia; • $ 167 million ($ 124 million after-tax) of charges for dismantling costs associated with the early retirement of certain electric generation facilities, attributable to Dominion Energy Virginia; • $ 125 million ($ 93 million after-tax) of charges associated with storm damage and service restoration, attributable to: • Dominion Energy Virginia ($ 87 million after-tax); and • Contracted Energy ($ 6 million after-tax); • A $ 40 million ($ 30 million after-tax) charge associated with the write-off of inventory, attributable to: • Contracted Energy ($ 16 million after-tax); and • Dominion Energy Virginia ($ 14 million after-tax); partially offset by • A $ 67 million ($ 49 million after-tax) gain related to economic hedging activities, attributable to Contracted Energy. In 2021, Dominion Energy reported after-tax net income of $ 705 million in the Corporate and Other segment, including $ 821 million of after-tax net benefit for specific items with $ 485 million of after tax-net expenses attributable to its operating segments. The net expenses for specific items attributable to Dominion Energy’s operating segments in 2021 primarily related to the impact of the following items: • A $ 337 million ($ 254 million after-tax) loss related to economic hedging activities, attributable to Contracted Energy; • $ 266 million ($ 199 million after-tax) of charges associated with the settlement of the South Carolina electric base rate case, attributable to Dominion Energy South Carolina; • A $ 211 million ($ 161 million after-tax) net loss on the sale of non-wholly-owned nonregulated solar facilities, attributable to Contracted Energy; • A $ 151 million ($ 112 million after-tax) loss from an unbilled revenue reduction at Virginia Power, attributable to Dominion Energy Virginia; • A $ 125 million ($ 93 million after-tax) net charge associated with the settlement of the 2021 Triennial Review, attributable to Dominion Energy Virginia; • A $ 77 million ($ 57 million after-tax) charge for the forgiveness of Virginia retail electric customer accounts in arrears pursuant to Virginia’s 2021 budget process, attributable to Dominion Energy Virginia; • A $ 70 million ($ 53 million after-tax) charge associated with litigation acquired in the SCANA Combination, attributable to Dominion Energy South Carolina; • A $ 68 million ($ 50 million after-tax) charge associated with storm damage and service restoration in Virginia Power’s service territory, attributable to Dominion Energy Virginia; • A $ 61 million ($ 45 million after-tax) charge for amortization of a regulatory asset established in connection with the settlement of the 2021 Triennial Review, attributable to Dominion Energy Virginia; and • A $ 44 million ($ 35 million after-tax) charge related to a revision in estimated recovery of spent nuclear fuel costs associated with the decommissioning of Kewaunee, attributable to Contracted Energy; partially offset by • A $ 568 million ($ 445 million after-tax) gain related to investments in nuclear decommissioning trust funds, attributable to: • Contracted Energy ($ 390 million after-tax); and • Dominion Energy Virginia ($ 55 million after-tax); and • A $ 130 million ($ 97 million after-tax) benefit for a change in the expected CCRO to be provided to Virginia retail electric customers under the GTSA, attributable to Dominion Energy Virginia. In 2020, Dominion Energy reported after-tax net expenses of $ 2.9 billion in the Corporate and Other segment, including $ 2.7 billion of after-tax net expenses for specific items with $ 1.2 billion of after-tax net expenses attributable to its operating segments. The net expenses for specific items attributable to Dominion Energy’s operating segments in 2020 primarily related to the impact of the following items: • A $ 751 million ($ 564 million after-tax) charge primarily related to the planned early retirement of certain Virginia Power electric generation facilities, attributable to Dominion Energy Virginia; • A $ 405 million ($ 325 million after-tax) charge associated with certain nonregulated solar generation facilities, attributable to Contracted Energy; • A $ 221 million ($ 171 million after-tax) charge associated with the sale of Fowler Ridge, attributable to Contracted Energy; and • A $ 130 million ($ 97 million after-tax) charge for the expected CCRO to be provided to Virginia retail electric customers under the GTSA, attributable to Dominion Energy Virginia; • A $ 127 million ($ 94 million after-tax) charge for the forgiveness of Virginia retail electric customer accounts in arrears pursuant to legislation enacted in November 2020, attributable to Dominion Energy Virginia; and • A $ 117 million ($ 93 million after-tax) of charges associated with litigation acquired in the SCANA Combination, attributable to Dominion Energy South Carolina; partially offset by • A $ 335 million ($ 264 million after-tax) net gain related to investments in nuclear decommissioning trust funds attributable to: • Dominion Energy Virginia ($ 27 million after-tax); and • Contracted Energy ($ 237 million after-tax). The following table presents segment information pertaining to Dominion Energy’s operations: Year Ended December 31, Dominion Energy Virginia Dominion Energy South Carolina Contracted Energy Corporate Adjustments & Consolidated (millions) 2022 Total revenue from external customers $ 9,658 $ 3,323 $ 890 $ 74 $ — $ 13,945 Intersegment revenue ( 15 ) 7 18 846 ( 856 ) — Total operating revenue 9,643 3,330 908 920 ( 856 ) 13,945 Depreciation, depletion and 1,452 507 123 360 — 2,442 Equity in earnings of equity method — — 2 19 — 21 Interest income (expense) 17 6 75 61 ( 50 ) 109 Interest and related charges (benefit) 645 220 18 169 ( 50 ) 1,002 Income tax expense (benefit) 411 132 64 ( 755 ) — ( 148 ) Net income from discontinued — — — 972 — 972 Net income (loss) attributable to 2,007 505 173 ( 1,691 ) — 994 Investment in equity method (1) — — 103 192 — 295 Capital expenditures 5,187 708 683 1,180 — 7,758 Total assets (billions) 55.3 17.2 7.7 29.5 ( 5.5 ) 104.2 2021 Total revenue from external customers $ 7,990 $ 2,968 $ 1,018 $ ( 616 ) $ 60 $ 11,420 Intersegment revenue ( 14 ) 7 67 837 ( 897 ) — Total operating revenue 7,976 2,975 1,085 221 ( 837 ) 11,420 Depreciation, depletion and 1,296 486 162 159 — 2,103 Equity in earnings of equity method — ( 3 ) ( 2 ) 20 — 15 Interest income (expense) 11 10 81 12 ( 19 ) 95 Interest and related charges (benefit) 535 206 42 491 ( 19 ) 1,255 Income tax expense (benefit) 467 125 49 ( 402 ) — 239 Net income from discontinued — — — 1,357 — 1,357 Net income attributable to 1,914 437 232 705 — 3,288 Investment in equity method (1) — — 74 88 — 162 Capital expenditures 3,756 694 420 1,191 — 6,061 Total assets (billions) 50.0 16.4 10.2 26.5 ( 3.5 ) 99.6 2020 Total revenue from external customers $ 7,779 $ 2,782 $ 1,019 $ 322 $ 49 $ 11,951 Intersegment revenue ( 16 ) 5 52 869 ( 942 ) ( 32 ) Total operating revenue 7,763 2,787 1,071 1,191 ( 893 ) 11,919 Depreciation, depletion and 1,245 474 182 90 — 1,991 Equity in earnings of equity method — ( 1 ) ( 5 ) 5 — ( 1 ) Interest income (expense) 11 12 91 34 ( 47 ) 101 Interest and related charges (benefit) 524 219 75 568 ( 47 ) 1,339 Income tax expense (benefit) 500 107 ( 24 ) ( 642 ) — ( 59 ) Net loss from discontinued — — — ( 1,334 ) — ( 1,334 ) Net income (loss) attributable to 1,884 419 202 ( 2,906 ) — ( 401 ) Capital expenditures 3,372 700 730 1,529 — 6,331 (1) Excludes liability to Atlantic Coast Pipeline. Intersegment sales and transfers for Dominion Energy are based on contractual arrangements and may result in intersegment profit or loss that is eliminated in consolidation, including amounts related to entities presented within discontinued operations. Virginia Power The Corporate and Other Segment of Virginia Power primarily includes specific items attributable to its operating segment that are not included in profit measures evaluated by executive management in assessing the segment’s performance or in allocating resources. In 2022, Virginia Power reported after-tax net expenses of $ 792 million in the Corporate and Other segment, including $ 773 million of after-tax net expenses for specific items all of which were attributable to its operating segment. The net expenses for specific items attributable to its operating segment in 2022 primarily related to the impact of the following items: • A $ 243 million ($ 181 million after-tax) charge for amortization of a regulatory asset established in connection with the settlement of the 2021 Triennial Review; • A $ 213 million ($ 159 million after-tax) charge for RGGI compliance costs deemed recovered through base rates; • A $ 191 million ($ 142 million after-tax) charge in connection with a comprehensive settlement agreement for Virginia fuel expenses; • $ 167 million ($ 124 million after-tax) of charges for dismantling costs associated with the early retirement of certain electric generation facilities; • $ 117 million ($ 87 million after-tax) of charges associated with storm damage and service restoration in its service territory; and • A $ 78 million ($ 58 million after-tax) loss related to investments in nuclear decommissioning trust funds. In 2021, Virginia Power reported after-tax net expenses of $ 202 million in the Corporate and Other segment, including $ 202 million of after-tax net expenses for specific items all of which were attributable to its operating segment. The net expenses for specific items attributable to its operating segment in 2021 primarily related to the impact of the following items: • A $ 151 million ($ 112 million after-tax) loss from an unbilled revenue reduction; • A $ 125 million ($ 93 million after-tax) net charge associated with the settlement of the 2021 Triennial Review; • A $ 77 million ($ 57 million after-tax) charge for the forgiveness of Virginia retail electric customer accounts in arrears pursuant to Virginia’s 2021 budget process; • A $ 68 million ($ 50 million after-tax) charge associated with storm damage and service restoration in its service territory; and • A $ 61 million ($ 45 million after-tax) charge for amortization of a regulatory asset established in connection with the settlement of the 2021 Triennial Review; partially offset by • A $ 130 million ($ 97 million after-tax) benefit for a change in the expected CCRO to be provided to Virginia retail electric customers under the GTSA. In 2020, Virginia Power reported after-tax net expenses of $ 863 million in the Corporate and Other segment, including $ 915 million of after-tax net expenses for specific items all of which were attributable to its operating segment. The net expenses for specific items attributable to its operating segment in 2020 primarily related to a $ 751 million ($ 559 million after-tax) charge related to the planned early retirement of certain electric generation facilities, a $ 130 million ($ 97 million after-tax) charge for the expected CCRO to be provided to Virginia retail electric customers under the GTSA and a $ 127 million ($ 94 million after-tax) charge for the forgiveness of Virginia retail electric customer accounts in arrears pursuant to legislation enacted in November 2020. The following table presents segment information pertaining to Virginia Power’s operations: Year Ended December 31, Dominion Energy Virginia Corporate and Other Consolidated (millions) 2022 Operating revenue $ 9,643 $ 11 $ 9,654 Depreciation and amortization 1,452 284 1,736 Interest income 17 — 17 Interest and related charges (benefit) 645 ( 3 ) 642 Income tax expense (benefit) 411 ( 220 ) 191 Net income (loss) 2,007 ( 792 ) 1,215 Capital expenditures 5,187 — 5,187 Total assets (billions) 53.2 — 53.2 2021 Operating revenue $ 7,976 $ ( 506 ) $ 7,470 Depreciation and amortization 1,296 68 1,364 Interest income 11 — 11 Interest and related charges (benefit) 535 ( 1 ) 534 Income tax expense (benefit) 467 ( 70 ) 397 Net income (loss) 1,914 ( 202 ) 1,712 Capital expenditures 3,756 — 3,756 Total assets (billions) 47.9 — 47.9 2020 Operating revenue $ 7,763 $ — $ 7,763 Depreciation and amortization 1,245 7 1,252 Interest income 11 — 11 Interest and related charges (benefit) 524 ( 8 ) 516 Income tax expense (benefit) 500 ( 271 ) 229 Net income (loss) 1,884 ( 863 ) 1,021 Capital expenditures 3,372 — 3,372

Quarterly Financial Data (Unaud

Quarterly Financial Data (Unaudited)	12 Months Ended
	Dec. 31, 2022
Quarterly Financial Data [Abstract]
Quarterly Financial Data	NOTE 27. QUARTERLY FINANCIAL DATA (UNAUDITED) A summary of the Companies’ quarterly results of operations for the years ended December 31, 2022 and 2021 follows. Amounts reflect all adjustments necessary in the opinion of management for a fair statement of the results for the interim periods. Results for interim periods may fluctuate as a result of weather conditions, changes in rates and other factors. In addition, Dominion Energy’s results have been recast reflecting the presentation of operations included as discontinued operations. See Notes 3 and 9 for more information. Dominion Energy First Quarter Second Quarter Third Quarter Fourth Quarter (millions) 2022 Operating revenue $ 3,113 $ 3,059 $ 3,963 $ 3,810 Income (loss) from continuing operations 642 ( 461 ) 995 ( 409 ) Net income (loss) from continuing operations including 300 ( 665 ) 626 ( 239 ) Net income from discontinued operations including 411 212 152 197 Net income (loss) including noncontrolling interests 711 ( 453 ) 778 ( 42 ) Net income (loss) attributable to Dominion Energy 711 ( 453 ) 778 ( 42 ) Basic EPS: Net income (loss) from continuing operations 0.34 ( 0.84 ) 0.73 ( 0.31 ) Net income from discontinued operations 0.50 0.26 0.18 0.24 Net income (loss) attributable to Dominion Energy 0.84 ( 0.58 ) 0.91 ( 0.07 ) Diluted EPS: Net income (loss) from continuing operations 0.34 ( 0.84 ) 0.73 ( 0.31 ) Net income from discontinued operations 0.50 0.26 0.18 0.24 Net income (loss) attributable to Dominion Energy 0.84 ( 0.58 ) 0.91 ( 0.07 ) Dividends declared per preferred share (Series A) 4.375 2.917 — — Dividends declared per preferred share (Series B) 11.625 11.625 11.625 11.625 Dividends declared per preferred share (Series C) 10.875 10.875 10.875 10.875 Dividends declared per common share 0.6300 0.6300 0.6300 0.6300 2021 Operating revenue $ 2,943 $ 2,601 $ 2,815 $ 3,061 Income from continuing operations 589 259 766 697 Net income from continuing operations including 693 140 496 628 Net income from discontinued operations including 315 155 170 717 Net income including noncontrolling interests 1,008 295 666 1,345 Net income attributable to Dominion Energy 1,008 285 654 1,341 Basic EPS: Net income from continuing operations 0.84 0.14 0.58 0.75 Net income from discontinued operations 0.39 0.19 0.21 0.88 Net income attributable to Dominion Energy 1.23 0.33 0.79 1.63 Diluted EPS: Net income continuing operations 0.84 0.14 0.58 0.75 Net income from discontinued operations 0.39 0.19 0.21 0.88 Net income attributable to Dominion Energy 1.23 0.33 0.79 1.63 Dividends per share (Series A Preferred Stock) 4.375 4.375 4.375 4.375 Dividends per share (Series B Preferred Stock) 11.625 11.625 11.625 11.625 Dividends per share (Series C Preferred Stock) — — — 2.6583 Dividends declared per common share 0.6675 0.6675 0.6675 0.6675 Dominion Energy’s 2022 results include the impact of the following significant items: • Fourth quarter results include a $ 1.1 billion after-tax charge associated with the impairment of certain nonregulated solar generation facilities. • Second quarter results include a $ 513 million after-tax loss associated with the sale of Kewaunee, a $ 142 million after-tax charge in connection with a proposed comprehensive settlement agreement for Virginia fuel expenses and a $ 134 million after-tax charge for RGGI compliance costs deemed recovered through base rates. Dominion Energy’s 2021 results include the impact of the following significant items: • Second quarter results include $ 199 million of after-tax charges associated with the settlement of the South Carolina electric base rate case. • First quarter results include a $ 112 million after-tax charge from an unbilled revenue reduction and a $ 97 million after-tax benefit for a change in the CCRO reserve associated with the 2021 Triennial Review. Virginia Power First Quarter Second Quarter Third Quarter Fourth Quarter (millions) 2022 Operating revenue $ 2,167 $ 2,175 $ 2,875 $ 2,437 Income from operations 562 236 802 448 Net income 357 47 571 240 2021 Operating revenue $ 1,830 $ 1,741 $ 1,976 $ 1,923 Income (loss) from operations 548 571 777 601 Net income (loss) 374 414 556 368 Virginia Power’s 2022 results include the impact of the following significant items: • Second quarter results include a $ 142 million after-tax charge in connection with a proposed comprehensive settlement agreement for Virginia fuel expenses and a $ 134 million after-tax charge for RGGI compliance costs deemed recovered through base rates. Virginia Power’s 2021 results include the impact of the following significant items: • First quarter results include a $ 112 million after-tax charge from an unbilled revenue reduction and a $ 97 million after-tax benefit for a change in the CCRO reserve associated with the 2021 Triennial Review.

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2022
Accounting Policies [Abstract]
Estimates	The Companies make certain estimates and assumptions in preparing their Consolidated Financial Statements in accordance with GAAP. These estimates and assumptions affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues, expenses and cash flows for the periods presented. Actual results may differ from those estimates.
Consolidation	The Companies’ Consolidated Financial Statements include, after eliminating intercompany transactions and balances, their accounts, those of their respective majority-owned subsidiaries and non-wholly-owned entities in which they have a controlling financial interest. For certain partnership structures, income is allocated based on the liquidation value of the underlying contractual arrangements. Clearway’s ownership interest in Four Brothers and Three Cedars (through December 2021), Terra Nova Renewable Partners’ 33 % interest in certain Dominion Energy nonregulated solar projects (through December 2021) and Brookfield’s 25 % interest in Cove Point (through November 2020) are reflected as noncontrolling interest in Dominion Energy’s Consolidated Financial Statements. The Companies report certain contracts, instruments and investments at fair value. See below and Note 6 for further information on fair value measurements. The Companies consider acquisitions or dispositions in which substantially all of the fair value of the gross assets acquired or disposed of is concentrated into a single identifiable asset or group of similar identifiable assets to be an acquisition or a disposition of an asset, rather than a business. See Notes 3 and 10 for further information on such transactions. Dominion Energy maintains pension and other postretirement benefit plans and Virginia Power participates in certain of these plans. See Note 22 for further information on these plans.
Reclassifications	Amounts disclosed for Dominion Energy are inclusive of Virginia Power, where applicable.
Operating Revenue	Operating Revenue Operating revenue is recorded on the basis of services rendered, commodities delivered, or contracts settled and includes amounts yet to be billed to customers. The Companies collect sales, consumption and consumer utility taxes; however, these amounts are excluded from revenue. Dominion Energy’s customer receivables and current assets held for sale at December 31, 2022 and 2021 included in aggregate $ 1.1 billion and $ 779 million, respectively, of accrued unbilled revenue based on estimated amounts of electricity and natural gas delivered but not yet billed to its utility customers. The balances presented within current assets held for sale were $ 324 million $ 232 million at December 31, 2022 and 2021, respectively. Virginia Power’s customer receivables at December 31, 2022 and 2021 included $ 620 million and $ 398 million, respectively, of accrued unbilled revenue based on estimated amounts of electricity delivered but not yet billed to its customers. See Note 25 for amounts attributable to related parties. The primary types of sales and service activities reported as operating revenue for Dominion Energy are as follows: Revenue from Contracts with Customers • Regulated electric sales consist primarily of state-regulated retail electric sales, and federally-regulated wholesale electric sales and electric transmission services; • Nonregulated electric sales consist primarily of sales of electricity at market-based rates and contracted fixed rates and associated hedging activity as well as sales to Virginia Power customers from non-jurisdictional solar generation facilities; • Regulated gas sales consist primarily of state-regulated natural gas sales and related distribution services; • Regulated gas transportation and storage sales consist of state-regulated sales of gathering services (through August 2022) and sales of transportation services to off-system customers; • Other regulated revenue consists primarily of miscellaneous service revenue from electric and gas distribution operations and sales of excess electric capacity and other commodities; and • Other nonregulated revenue consists primarily of sales of other miscellaneous products. Other nonregulated revenue also includes sales of energy-related products and services from Dominion Energy’s retail energy marketing operations (through December 2021), service concession arrangements (through December 2022) and revenue associated with services provided to entities presented in discontinued operations under transition services agreements. Other Revenue • Other revenue consists primarily of alternative revenue programs, gains and losses from derivative instruments not subject to hedge accounting and lease revenues. The primary types of sales and service activities reported as operating revenue for Virginia Power are as follows: Revenue from Contracts with Customers • Regulated electric sales consist primarily of state-regulated retail electric sales and federally-regulated wholesale electric sales and electric transmission services; • Nonregulated electric sales consists of sales to customers from non-jurisdictional solar generation facilities; • Other regulated revenue consists primarily of sales of excess capacity and other commodities and miscellaneous service revenue from electric distribution operations; and • Other nonregulated revenue consists primarily of revenue from renting space on certain electric transmission poles and distribution towers and service concession arrangements (through October 2022). Other Revenue • Other revenue consists primarily of alternative revenue programs, gains and losses from derivative instruments not subject to hedge accounting and lease revenues. The Companies record refunds to customers as required by state commissions as a reduction to regulated electric sales or regulated gas sales, as applicable. The Companies’ revenue accounted for under the alternative revenue program guidance primarily consists of the equity return for under-recovery of certain riders. Alternative revenue programs compensate the Companies for certain projects and initiatives. Revenues arising from these programs are presented separately from revenue arising from contracts with customers in the categories above. Revenues from electric and gas sales are recognized over time, as the customers of the Companies consume gas and electricity as it is delivered. Fixed fees are recognized ratably over the life of the contract as the stand-ready performance obligation is satisfied, while variable usage fees are recognized when Dominion Energy has a right to consideration from a customer in an amount that corresponds directly with the value to the customer of the performance obligation completed to date. Sales of products and services typically transfer control and are recognized as revenue upon delivery of the product or service. The customer is able to direct the use of, and obtain substantially all of the benefits from, the product at the time the product is delivered. The contract with the customer states the final terms of the sale, including the description, quantity and price of each product or service purchased. Payment for most sales and services varies by contract type but is typically due within a month of billing. Operating revenue for the gas transmission and storage operations sold to BHE as part of the GT&S Transaction and sold to Southwest Gas as part of the Q-Pipe Group sale primarily consisted of FERC-regulated sales of transmission and storage services, LNG terminalling services, sales of extracted products and associated hedging activities and NGL activities, including gathering and processing and sales of production and condensate as well as services performed for Atlantic Coast Pipeline. This revenue is included in discontinued operations in Dominion Energy’s Consolidated Statements of Income. Transportation and storage contracts associated with the operations sold to BHE as part of the GT&S Transaction and sold to Southwest Gas as part of the Q-Pipe Group sale were primarily stand-ready service contracts that include fixed reservation and variable usage fees. LNG terminalling services, included in discontinued operations, are also stand-ready service contracts, primarily consisting of fixed fees, offset by service credits associated with the start-up phase of the Liquefaction Facility. NGLs received during natural gas processing are recorded in discontinued operations at fair value as service revenue recognized over time, and revenue continued to be recognized from the subsequent sale of the NGLs to customers upon delivery. Operating revenue for the gas distribution operations to be sold to Enbridge as part of the East Ohio, PSNC and Questar Gas Transactions primarily consists of state-regulated natural gas sales to residential, commercial and industrial customers and related distribution services, state regulated gas distribution charges to retail distribution service customers opting for alternate suppliers and sales of commodities related to nonregulated extraction activities. This revenue is included in discontinued operations in Dominion Energy's Consolidated Statements of Income. Transportation and storage contracts associated with the operations to be sold to Enbridge as part of the East Ohio, PSNC and Questar Gas Transactions are primarily stand-ready service contracts that include fixed reservation and variable usage fees. Substantially all of the revenue associated with these local gas distribution companies is derived from performance obligations satisfied over time and month-to-month billings according to their respective tariffs.
Credit Risk	Credit Risk Credit risk is the risk of financial loss if counterparties fail to perform their contractual obligations. In order to minimize overall credit risk, credit policies are maintained, including the evaluation of counterparty financial condition, collateral requirements and the use of standardized agreements that facilitate the netting of cash flows associated with a single counterparty. In addition, counterparties may make available collateral, including letters of credit or cash held as margin deposits, as a result of exceeding agreed-upon credit limits, or may be required to prepay the transaction. The Companies maintain a provision for credit losses based on factors surrounding the credit risk of their customers, historical trends and other information. Expected credit losses are estimated and recorded based on historical experience, current conditions and reasonable and supportable forecasts that affect the collectability of financial assets held at amortized cost as well as expected credit losses on commitments with respect to financial guarantees.
Electric Fuel, Purchased Energy and Purchased Gas-Deferred Costs	Electric Fuel, Purchased Energy and Purchased Gas-Deferred Costs Where permitted by regulatory authorities, the differences between the Companies’ actual electric fuel and purchased energy expenses and Dominion Energy’s purchased gas expenses and the related levels of recovery for these expenses in current rates are deferred and matched against recoveries in future periods. The deferral of costs in excess of current period fuel rate recovery is recognized as a regulatory asset, while rate recovery in excess of current period fuel expenses is recognized as a regulatory liability. Of the cost of fuel used in electric generation and energy purchases to serve Virginia utility customers, at December 31, 2022, approximately 86 % is subject to Virginia Power’s deferred fuel accounting, while substantially all of the remaining amount is subject to recovery through similar mechanisms. Of the cost of fuel used in electric generation and energy purchases to serve South Carolina utility customers, at December 31, 2022, approximately 96 % is subject to DESC’s deferred fuel accounting. Virtually all of East Ohio, Questar Gas, DESC and PSNC’s natural gas purchases are either subject to deferral accounting or are recovered from the customer in the same accounting period as the sale. Dominion Energy can earn certain cost saving sharing incentives under the Wexpro Agreements to the extent that the cost of gas supplied to Questar Gas is a certain amount lower than third-party market rates. In 2022, Dominion Energy recorded $ 27 million for such incentives, reflected in discontinued operations in Dominion Energy's Consolidated Statements of Income. No amounts were recorded for the years ended December 31, 2021 or 2020.
Income Taxes	Income Taxes A consolidated federal income tax return is filed for Dominion Energy and its subsidiaries, including Virginia Power. In addition, where applicable, combined income tax returns for Dominion Energy and its subsidiaries are filed in various states; otherwise, separate state income tax returns are filed. Virginia Power participates in intercompany tax sharing agreements with Dominion Energy and its subsidiaries. Current income taxes are based on taxable income or loss and credits determined on a separate company basis. Under the agreements, if a subsidiary incurs a tax loss or earns a credit, recognition of current income tax benefits is limited to refunds of prior year taxes obtained by the carryback of the net operating loss or credit or to the extent the tax loss or credit is absorbed by the taxable income of other Dominion Energy consolidated group members. Otherwise, the net operating loss or credit is carried forward and is recognized as a deferred tax asset until realized. Accounting for income taxes involves an asset and liability approach. Deferred income tax assets and liabilities are provided, representing future effects on income taxes for temporary differences between the bases of assets and liabilities for financial reporting and tax purposes. Accordingly, deferred taxes are recognized for the future consequences of different treatments used for the reporting of transactions in financial accounting and income tax returns. The Companies establish a valuation allowance when it is more-likely-than-not that all, or a portion, of a deferred tax asset will not be realized. Where the treatment of temporary differences is different for rate-regulated operations, a regulatory asset is recognized if it is probable that future revenues will be provided for the payment of deferred tax liabilities. The Companies recognize positions taken, or expected to be taken, in income tax returns that are more-likely-than-not to be realized, assuming that the position will be examined by tax authorities with full knowledge of all relevant information. If it is not more-likely-than-not that a tax position, or some portion thereof, will be sustained, the related tax benefits are not recognized in the financial statements. Unrecognized tax benefits may result in an increase in income taxes payable, a reduction of income tax refunds receivable or changes in deferred taxes. Also, when uncertainty about the deductibility of an amount is limited to the timing of such deductibility, the increase in income taxes payable (or reduction in tax refunds receivable) is accompanied by a decrease in deferred tax liabilities. Except when such amounts are presented net with amounts receivable from or amounts prepaid to tax authorities, noncurrent income taxes payable related to unrecognized tax benefits are classified in other deferred credits and other liabilities on the Consolidated Balance Sheets and current payables are included in accrued interest, payroll and taxes on the Consolidated Balance Sheets. The Companies recognize interest on underpayments and overpayments of income taxes in interest expense and other income, respectively. Penalties are also recognized in other income. In 2021, Dominion Energy reflected a $ 21 million benefit from the reversal of interest expense and a $ 7 million benefit from the reversal of penalty expense on uncertain tax positions that were effectively settled. At December 31, 2022, Virginia Power had a net income tax-related affiliated payable of $ 22 million, comprised of $ 25 million of federal income taxes payable to, and $ 3 million of state income taxes receivable from, Dominion Energy. Virginia Power’s net affiliated balances are expected to be paid to Dominion Energy. At December 31, 2021, Virginia Power had an income tax-related affiliated receivable of $ 35 million, comprised of $ 33 million of federal income taxes and $ 2 million of state income taxes receivable from Dominion Energy. These affiliated balances were received from Dominion Energy. Investment tax credits are recognized by nonregulated operations in the year qualifying property is placed in service. For regulated operations, investment tax credits are deferred and amortized over the service lives of the properties giving rise to the credits. Production tax credits are recognized as energy is generated and sold. The IRA allows the election of either the investment tax credit or production tax credit for certain technologies including solar and wind. Such election is made on a project-by-project basis and the choice of credit may vary based on a combination of factors including, but not limited to, capital expenditures and net capacity factors.
Cash, Restricted Cash and Equivalents	Cash, Restricted Cash and Equivalents Cash, restricted cash and equivalents include cash on hand, cash in banks and temporary investments purchased with an original maturity of three months or less. Current banking arrangements generally do not require checks to be funded until they are presented for payment. The following table illustrates the checks outstanding but not yet presented for payment and recorded in accounts payable for the Companies: At December 31, 2022 2021 (millions) Dominion Energy $ 35 $ 54 Virginia Power 21 15 Restricted Cash and Equivalents The Companies hold restricted cash and equivalent balances that primarily consist of amounts held for litigation settlements, customer deposits, federal assistance funds and future debt payments on SBL Holdco and Dominion Solar Projects III, Inc.’s term loan agreements (through December 2021), on DECP Holdings’ term loan agreement and on Eagle Solar’s senior note agreement. The following table provides a reconciliation of the total cash, restricted cash and equivalents reported within the Companies’ Consolidated Balance Sheets to the corresponding amounts reported within the Companies’ Consolidated Statements of Cash Flows for the years ended December 31, 2022, 2021, 2020 and 2019: Cash, Restricted Cash and Equivalents at End/Beginning of Year December 31, 2022 December 31, 2021 December 31, 2020 December 31, 2019 (millions) Dominion Energy Cash and cash equivalents (1) $ 153 $ 283 $ 179 $ 166 Restricted cash and equivalents (2) 188 125 68 103 Cash, restricted cash and equivalents shown in the $ 341 $ 408 $ 247 $ 269 Virginia Power Cash and cash equivalents $ 22 $ 26 $ 35 $ 17 Restricted cash and equivalents (3) 2 — — 7 Cash, restricted cash and equivalents shown in the $ 24 $ 26 $ 35 $ 24 (1) At December 31, 2022, 2021, 2020 and 2019, Dominion Energy had $ 34 million, $ 34 million, $ 21 million and $ 47 million, respectively, of cash and cash equivalents included in current assets held for sale. (2) At December 31, 2022, 2021, 2020 and 2019, Dominion Energy had $ 2 million, less than $ 1 million, $ 3 million and $ 12 million, respectively, of restricted cash and equivalents included in current assets held for sale with the remaining balances presented within other current assets in Dominion Energy's Consolidated Balance Sheets.. (3) Restricted cash and equivalents balances are presented within other current assets in Virginia Power’s Consolidated Balance Sheets . Supplemental Cash Flow Information The following table provides supplemental disclosure of cash flow information related to Dominion Energy: Year Ended December 31, 2022 2021 2020 (millions) Cash paid during the year for: Interest and related charges, excluding capitalized amounts $ 1,408 $ 1,340 $ 1,519 Income taxes 139 160 292 Significant noncash investing and financing activities: (1)(2) Accrued capital expenditures 979 637 485 Leases (3) 144 96 173 (1) See Note 9 for noncash investing activities related to the acquisition of a noncontrolling interest in Wrangler and Dominion Privatization. (2) See Notes 18, 19, 20 and 23 for noncash financing activities related to the contribution of stock to Dominion Energy’s defined benefit pension plan, remarketing of Series A Preferred Stock, derivative restructuring and the issuance of common stock and transfer of property associated with the settlement of litigation. (3) Includes $ 34 million of finance leases and $ 110 million of operating leases entered in 2022, $ 47 million of finance leases and $ 49 million of operating leases entered in 2021 and $ 46 million of finance leases and $ 127 million of operating leases entered in 2020. The following table provides supplemental disclosure of cash flow information related to Virginia Power: Year Ended December 31, 2022 2021 2020 (millions) Cash paid (received) during the year for: Interest and related charges, excluding capitalized amounts $ 599 $ 501 $ 491 Income taxes ( 54 ) 109 452 Significant noncash investing activities: (1) Accrued capital expenditures 665 363 262 Leases (2) 116 79 32 (1) See Note 18 for non-cash financing activities related to derivative restructuring. (2) Includes $ 26 million of finance leases and $ 90 million of operating leases entered in 2022, $ 37 million of finance leases and $ 42 million of operating leases entered in 2021 and $ 32 million of finance leases entered in 2020. Distributions from Equity Method Investees Dominion Energy holds investments that are accounted for under the equity method of accounting and classifies distributions from equity method investees as either cash flows from operating activities or cash flows from investing activities in the Consolidated Statements of Cash Flows according to the nature of the distribution. Distributions received are classified on the basis of the nature of the activity of the investee that generated the distribution as either a return on investment (classified as cash flows from operating activities) or a return of an investment (classified as cash flows from investing activities) when such information is available to Dominion Energy.
Fair Value Measurements	Fair Value Measurements Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability (exit price) in an orderly transaction between market participants at the measurement date. However, the use of a mid-market pricing convention (the mid-point between bid and ask prices) is permitted. Fair values are based on assumptions that market participants would use when pricing an asset or liability, including assumptions about risk and the risks inherent in valuation techniques and the inputs to valuations. This includes not only the credit standing of counterparties involved and the impact of credit enhancements but also the impact of the Companies’ own nonperformance risk on their liabilities. Fair value measurements assume that the transaction occurs in the principal market for the asset or liability (the market with the most volume and activity for the asset or liability from the perspective of the reporting entity), or in the absence of a principal market, the most advantageous market for the asset or liability (the market in which the reporting entity would be able to maximize the amount received or minimize the amount paid). Dominion Energy applies fair value measurements to certain assets and liabilities including commodity, interest rate and/or foreign currency exchange rate derivative instruments, and other investments including those held in nuclear decommissioning, rabbi, and pension and other postretirement benefit plan trusts, in accordance with the requirements discussed above. Virginia Power applies fair value measurements to certain assets and liabilities including commodity, interest rate and/or foreign currency exchange rate derivative instruments and other investments including those held in the nuclear decommissioning trust, in accordance with the requirements discussed above. The Companies apply credit adjustments to their derivative fair values in accordance with the requirements described above. Inputs and Assumptions Fair value is based on actively-quoted market prices, if available. In the absence of actively-quoted market prices, price information is sought from external sources, including industry publications, and to a lesser extent, broker quotes. When evaluating pricing information provided by Designated Contract Market settlement pricing, other pricing services, or brokers, the Companies consider the ability to transact at the quoted price, i.e. if the quotes are based on an active market or an inactive market and to the extent which pricing models are used, if pricing is not readily available. If pricing information from external sources is not available, or if the Companies believe that observable pricing is not indicative of fair value, judgment is required to develop the estimates of fair value. In those cases the unobservable inputs are developed and substantiated using historical information, available market data, third-party data and statistical analysis. Periodically, inputs to valuation models are reviewed and revised as needed, based on historical information, updated market data, market liquidity and relationships and changes in third-party sources. For options and contracts with option-like characteristics where observable pricing information is not available from external sources, the Companies generally use a modified Black-Scholes Model that considers time value, the volatility of the underlying commodities and other relevant assumptions when estimating fair value. The Companies use other option models under special circumstances, including but not limited to Spread Approximation Model and a Swing Option Model. For contracts with unique characteristics, the Companies may estimate fair value using a discounted cash flow approach deemed appropriate in the circumstances and applied consistently from period to period. For individual contracts, the use of different valuation models or assumptions could have a significant effect on the contract’s estimated fair value. The inputs and assumptions used in measuring fair value include the following: Derivative Contracts Inputs and assumptions Commodity Interest Rate Foreign Currency Exchange Rate Investments Forward commodity prices X Transaction prices X Price volatility X Price correlation X Volumes X Commodity location X Interest rate curves X Foreign currency forward exchange rates X Quoted securities prices and indices X Securities trading information including volume and restrictions X Maturity X Interest rates X X X Credit quality of counterparties and the Companies X X X X Credit enhancements X X Notional value X X Time value X X X Levels The Companies also utilize the following fair value hierarchy, which prioritizes the inputs to valuation techniques used to measure fair value into three broad levels: • Level 1—Quoted prices (unadjusted) in active markets for identical assets and liabilities that they have the ability to access at the measurement date. Instruments categorized in Level 1 primarily consist of financial instruments such as certain exchange-traded derivatives and exchange-listed equities, U.S. and international equity securities, mutual funds and certain Treasury securities held in nuclear decommissioning trust funds for the Companies and benefit plan trust funds and rabbi trust funds for Dominion Energy. • Level 2—Inputs other than quoted prices included within Level 1 that are either directly or indirectly observable for the asset or liability, including quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in inactive markets, inputs other than quoted prices that are observable for the asset or liability and inputs that are derived from observable market data by correlation or other means. Instruments categorized in Level 2 primarily include commodity forwards and swaps, interest rate swaps, foreign currency exchange rate instruments and cash and cash equivalents, corporate debt instruments, government securities and other fixed income investments held in nuclear decommissioning trust funds for the Companies and benefit plan trust funds and rabbi trust funds for Dominion Energy. • Level 3—Unobservable inputs for the asset or liability, including situations where there is little, if any, market activity for the asset or liability. Instruments categorized in Level 3 for the Companies consist of long-dated commodity derivatives, FTRs, certain natural gas options and other modeled commodity derivatives. The fair value hierarchy gives the highest priority to quoted prices in active markets (Level 1) and the lowest priority to unobservable data (Level 3). In some cases, the inputs used to measure fair value might fall in different levels of the fair value hierarchy. In these cases, the lowest level input that is significant to a fair value measurement in its entirety determines the applicable level in the fair value hierarchy. Assessing the significance of a particular input to the fair value measurement in its entirety requires judgment, considering factors specific to the asset or liability. Alternative investments, consisting of investments in partnerships, joint ventures and other alternative investments held in nuclear decommissioning and benefit plan trust funds, are generally valued using NAV based on the proportionate share of the fair value as determined by reference to the most recent audited fair value financial statements or fair value statements provided by the investment manager adjusted for any significant events occurring between the investment manager’s and the Companies’ measurement date. Alternative investments recorded at NAV are not classified in the fair value hierarchy. Transfers out of Level 3 represent assets and liabilities that were previously classified as Level 3 for which the inputs became observable for classification in either Level 1 or Level 2. Because the activity and liquidity of commodity markets vary substantially between regions and time periods, the availability of observable inputs for substantially the full term and value of the Companies’ over-the-counter derivative contracts is subject to change.
Derivative Instruments	Derivative Instruments The Companies are exposed to the impact of market fluctuations in the price of electricity, natural gas and other energy-related products they market and purchase, as well as interest rate and foreign currency exchange rate risks in their business operations. The Companies use derivative instruments such as physical and financial forwards, futures, swaps, options, foreign currency transactions and FTRs to manage the commodity, interest rate and/or foreign currency exchange rate risks of their business operations. Derivative assets and liabilities are presented gross on the Companies’ Consolidated Balance Sheets. Derivative contracts representing unrealized gain positions and purchased options are reported as derivative assets. Derivative contracts representing unrealized losses and options sold are reported as derivative liabilities. All derivatives, except those for which an exception applies, are required to be reported at fair value. One of the exceptions to fair value accounting, normal purchases and normal sales, may be elected when the contract satisfies certain criteria, including a requirement that physical delivery of the underlying commodity is probable. Expenses and revenues resulting from deliveries under normal purchase contracts and normal sales contracts, respectively, are included in earnings at the time of contract performance. See Fair Value Measurements above for additional information about fair value measurements and associated valuation methods for derivatives. The Companies' derivative contracts include both over-the-counter transactions and those that are executed on an exchange or other trading platform (exchange contracts) and centrally cleared. Over-the-counter contracts are bilateral contracts that are transacted directly with a third party. Exchange contracts utilize a financial intermediary, exchange or clearinghouse to enter, execute or clear the transactions. Certain over-the-counter and exchange contracts contain contractual rights of offset through master netting arrangements, derivative clearing agreements and contract default provisions. In addition, the contracts are subject to conditional rights of offset through counterparty nonperformance, insolvency or other conditions. In general, most over-the-counter transactions and all exchange contracts are subject to collateral requirements. Types of collateral for over-the-counter and exchange contracts include cash, letters of credit, and in some cases, other forms of security, none of which are subject to restrictions. The Companies do not offset amounts recognized for the right to reclaim cash collateral or the obligation to return cash collateral against amounts recognized for derivative instruments executed with the same counterparty under the same master netting arrangement. Dominion Energy had margin assets of $ 480 million and $ 678 million associated with cash collateral at December 31, 2022 and 2021, respectively. Dominion Energy had no margin liabilities associated with cash collateral at December 31, 2022 and 2021. Virginia Power had margin assets of $ 310 million and $ 167 million associated with cash collateral at December 31, 2022 and 2021, respectively. Virginia Power had no margin liabilities associated with cash collateral at December 31, 2022 and 2021. See Note 7 for further information about derivatives. To manage price and interest rate risk, the Companies hold derivative instruments that are not designated as hedges for accounting purposes. However, to the extent the Companies do not hold offsetting positions for such derivatives, they believe these instruments represent economic hedges that mitigate their exposure to fluctuations in commodity prices or interest rates. All income statement activity, including amounts realized upon settlement, is presented in operating revenue, operating expenses, interest and related charges or discontinued operations based on the nature of the underlying risk. Changes in the fair value of derivative instruments result in the recognition of regulatory assets or regulatory liabilities for jurisdictions subject to cost-based rate regulation. Realized gains or losses on the derivative instruments are generally recognized when the related transactions impact earnings. Derivative Instruments Designated as Hedging Instruments In accordance with accounting guidance pertaining to derivatives and hedge accounting, the Companies designate a portion of their derivative instruments as either cash flow or fair value hedges for accounting purposes. For derivative instruments that are accounted for as cash flow hedges or fair value hedges, the cash flows from the derivatives and from the related hedged items are classified in operating cash flows. Cash Flow Hedges A majority of the Companies’ hedge strategies represents cash flow hedges of the variable price risk primarily associated with the use of interest rate swaps to hedge their exposure to variable interest rates on long-term debt. For transactions in which the Companies are hedging the variability of cash flows, changes in the fair value of the derivatives are reported in AOCI, to the extent they are effective at offsetting changes in the hedged item, or as appropriate to regulatory assets or regulatory liabilities. Any derivative gains or losses reported in AOCI are reclassified to earnings when the forecasted item is included in earnings, or earlier, if it becomes probable that the forecasted transaction will not occur. For cash flow hedge transactions, hedge accounting is discontinued if the occurrence of the forecasted transaction is no longer probable. Fair Value Hedges Dominion Energy may also designate interest rate swaps as fair value hedges on certain fixed rate long-term debt to manage interest rate exposure. For fair value hedge transactions, changes in the fair value of the derivative are generally offset currently in earnings by the recognition of changes in the hedged item’s fair value. Hedge accounting is discontinued if the hedged item no longer qualifies for hedge accounting.
Property, Plant and Equipment	Property, Plant and Equipment Property, plant and equipment is recorded at lower of original cost or fair value, if impaired. Capitalized costs include labor, materials and other direct and indirect costs such as asset retirement costs, capitalized interest and, for certain operations subject to cost-of-service rate regulation, AFUDC and overhead costs. The cost of repairs and maintenance, including minor additions and replacements, is generally charged to expense as it is incurred. In 2022, 2021 and 2020, Dominion Energy capitalized interest costs and AFUDC to property, plant and equipment of $ 84 million, $ 96 million and $ 85 million, respectively. In addition, Dominion Energy capitalized interest costs and AFUDC represented in discontinued operations to property, plant and equipment presented as held for sale of $ 28 million, $ 21 million and $ 18 million, respectively. In 2022, 2021 and 2020, Virginia Power capitalized AFUDC to property, plant and equipment of $ 66 million, $ 78 million and $ 60 million, respectively. Under Virginia law, certain Virginia jurisdictional projects qualify for current recovery of AFUDC through rate adjustment clauses. AFUDC on these projects is calculated and recorded as a regulatory asset and is not capitalized to property, plant and equipment. In 2022, 2021 and 2020, Virginia Power recorded $ 34 million, $ 35 million and $ 11 million of AFUDC related to these projects, respectively. For property subject to cost-of-service rate regulation, including the Companies’ electric distribution, electric transmission and generation property and Dominion Energy’s natural gas distribution property, the undepreciated cost of such property, less salvage value, is generally charged to accumulated depreciation at retirement. Cost of removal collections from utility customers not representing AROs are recorded as regulatory liabilities. For property subject to cost-of-service rate regulation that will be abandoned significantly before the end of its useful life, the net carrying value is reclassified from plant-in-service when it becomes probable it will be abandoned and recorded as a regulatory asset for amounts expected to be collected through future rates. In March 2020, Virginia Power committed to retire certain coal- and oil-fired generating units before the end of their useful lives based on economic and other factors, including but not limited to market power prices and the VCEA. These units will be retired after they meet their capacity obligations to PJM in 2023. As a result, Virginia Power recorded a charge of $ 751 million ($ 559 million after-tax) in impairment of assets and other charges in its Consolidated Statements of Income (reflected in the Corporate and Other segment) for the year ended December 31, 2020. This charge was considered a component of Virginia Power’s base rates deemed recovered under the GTSA, subject to review as discussed in Note 13. In addition, see Note 13 for information on the settlement of the 2021 Triennial Review. In 2022 and 2020, Virginia Power recorded charges of $ 167 million ($ 124 million after-tax) and $ 54 million ($ 40 million after-tax), respectively, in impairment of assets and other charges in its Consolidated Statements of Income (reflected in the Corporate and Other segment) associated with dismantling certain of these electric generation facilities. For property that is not subject to cost-of-service rate regulation, including nonutility property, cost of removal not associated with AROs is charged to expense as incurred. The Companies also record gains and losses upon retirement based upon the difference between the proceeds received, if any, and the property’s net book value at the retirement date. Depreciation of property, plant and equipment is computed on the straight-line method based on projected service lives. The Companies’ average composite depreciation rates on utility property, plant and equipment are as follows: Year Ended December 31, 2022 2021 2020 (percent) Dominion Energy (1) Generation 2.71 2.63 2.51 Transmission 2.32 2.52 2.52 Distribution 2.80 2.85 2.75 Storage 2.69 2.94 2.93 General and other 4.42 4.48 4.77 Virginia Power Generation 2.84 2.69 2.52 Transmission 2.29 2.51 2.52 Distribution 2.76 3.18 3.19 General and other 4.78 5.08 5.09 (1) Excludes rates for depreciation reported as discontinued operations. In 2020, Virginia Power updated depreciation rates for its nuclear plants to reflect lower depreciation rates as a result of expected approval of license extensions from the NRC. For the year ended December 31, 2020, this adjustment resulted in a decrease of $ 31 million ($ 23 million after-tax) in depreciation expense in Virginia Power’s Consolidated Statements of Income and an increase to Dominion Energy’s EPS of $ 0.03 per share. In January 2022, Dominion Energy revised the estimated useful life of its non-jurisdictional and certain nonregulated solar generation facilities to 35 years. This revision resulted in an annual decrease of depreciation expense of $ 16 million ($ 12 million after-tax), including $ 6 million ($ 4 million after-tax) at Virginia Power, and increased Dominion Energy’s EPS by approximately $ 0.02 . In the first quarter of 2022, Virginia Power revised the depreciation rates for its assets to reflect the results of a new depreciation study. The change resulted in a decrease in depreciation expense in Virginia Power’s Consolidated Statements of Income of $ 60 million ($ 45 million after-tax) and increased Dominion Energy’s EPS by $ 0.05 . Virginia Power’s non-jurisdictional solar generation property, plant and equipment is depreciated using the straight-line method over an estimated useful life of 35 years, effective January 2022. Capitalized costs of development wells and leaseholds are amortized on a field-by-field basis using the unit-of-production method and the estimated proved developed or total proved gas and oil reserves, at a rate of $ 1.67 and $ 1.92 per mcfe in 2022 and 2021, respectively. Dominion Energy’s nonutility property, plant and equipment is depreciated using the straight-line method over the following estimated useful lives: Asset Estimated Useful Lives Nonregulated generation-nuclear 44 years Nonregulated generation-other 15 - 35 years General and other 5 - 59 years Nuclear fuel used in electric generation is amortized over its estimated service life on a units-of-production basis. The Companies report the amortization of nuclear fuel in electric fuel and other energy-related purchases expense in their Consolidated Statements of Income and in depreciation and amortization in their Consolidated Statements of Cash Flows.
Long-Lived and Intangible Assets	Long-Lived and Intangible Assets The Companies perform an evaluation for impairment whenever events or changes in circumstances indicate that the carrying amount of long-lived assets or intangible assets with finite lives may not be recoverable. A long-lived or intangible asset is written down to fair value if the sum of its expected future undiscounted cash flows is less than its carrying amount. Intangible assets with finite lives are amortized over their estimated useful lives. See Note 6 for further discussion on the impairment of long-lived assets.
Regulatory Assets and Liabilities	Regulatory Assets and Liabilities The accounting for the Companies’ regulated electric and gas operations differs from the accounting for nonregulated operations in that the Companies are required to reflect the effect of rate regulation in their Consolidated Financial Statements. For regulated businesses subject to federal or state cost-of-service rate regulation, regulatory practices that assign costs to accounting periods may differ from accounting methods generally applied by nonregulated companies. When it is probable that regulators will permit the recovery of current costs through future rates charged to customers, these costs that otherwise would be expensed by nonregulated companies are deferred as regulatory assets. Likewise, regulatory liabilities are recognized when it is probable that regulators will require customer refunds or other benefits through future rates or when revenue is collected from customers for expenditures that have yet to be incurred. The Companies evaluate whether or not recovery of their regulatory assets through future rates is probable as well as whether a regulatory liability due to customers is probable and make various assumptions in their analyses. These analyses are generally based on: • Orders issued by regulatory commissions, legislation and judicial actions; • Past experience; • Discussions with applicable regulatory authorities and legal counsel; • Forecasted earnings; and • Considerations around the likelihood of impacts from events such as unusual weather conditions, extreme weather events and other natural disasters and unplanned outages of facilities. Generally, regulatory assets and liabilities are amortized into income over the period authorized by the regulator. If recovery of a regulatory asset is determined to be less than probable, it will be written off in the period such assessment is made. A regulatory liability, if considered probable, will be recorded in the period such assessment is made or reversed into earnings if no longer probable. See Notes 12 and 13 to the Consolidated Financial Statements for additional information.
Leases	Leases The Companies lease certain assets including vehicles, real estate, office equipment and other operational assets under both operating and finance leases. For the Companies’ operating leases, rent expense is recognized on a straight-line basis over the term of the lease agreement, subject to regulatory framework. Rent expense associated with operating leases, short-term leases and variable leases is primarily recorded in other operations and maintenance expense in the Companies’ Consolidated Statements of Income. Rent expense associated with finance leases results in the separate presentation of interest expense on the lease liability and amortization expense of the related right-of-use asset in the Companies’ Consolidated Statements of Income or, subject to regulatory framework, is deferred within regulatory assets in the Consolidated Balance Sheets and amortized into the Consolidated Statements of Income. Certain of the Companies’ leases include one or more options to renew, with renewal terms that can extend the lease from one to 70 years. The exercise of renewal options is solely at the Companies’ discretion and is included in the lease term if the option is reasonably certain to be exercised. A right-of-use asset and corresponding lease liability for leases with original lease terms of one year or less are not included in the Consolidated Balance Sheets, unless such leases contain renewal options that the Companies are reasonably certain will be exercised. Additionally, certain of the Companies’ leases contain escalation clauses whereby payments are adjusted for consumer price or other indices or contain fixed dollar or percentage increases. The Companies also have leases with variable payments based upon usage of, or revenues associated with, the leased assets. The determination of the discount rate utilized has a significant impact on the calculation of the present value of the lease liability included in the Companies’ Consolidated Balance Sheets. For the Companies’ fleet of leased vehicles, the discount rate is equal to the prevailing borrowing rate earned by the lessor. For the Companies’ remaining leased assets, the discount rate implicit in the lease is generally unable to be determined from a lessee perspective. As such, the Companies use internally-developed incremental borrowing rates as a discount rate in the calculation of the present value of the lease liability. The incremental borrowing rates are determined based on an analysis of the Companies’ publicly available unsecured borrowing rates, adjusted for a collateral discount, over various lengths of time that most closely correspond to the Companies’ lease maturities. In addition, Dominion Energy acts as lessor under certain power purchase agreements in which the counterparty or counterparties purchase substantially all of the output of certain solar facilities. These leases are considered operating in nature. For such leasing arrangements, rental revenue and an associated accounts receivable are recorded when the monthly output of the solar facility is determined. Depreciation on these solar facilities is computed on a straight-line basis primarily over an estimated useful life of 35 years, effective January 2022.
Asset Retirement Obligations	Asset Retirement Obligations The Companies recognize AROs at fair value as incurred or when sufficient information becomes available to determine a reasonable estimate of the fair value of future retirement activities to be performed, for which a legal obligation exists. These amounts are generally capitalized as costs of the related tangible long-lived assets. Since relevant market information is not available, fair value is estimated using discounted cash flow analyses. Quarterly, the Companies assess their AROs to determine if circumstances indicate that estimates of the amounts or timing of future cash flows associated with retirement activities have changed. AROs are adjusted when significant changes in the amounts or timing of future cash flows are identified. Dominion Energy reports accretion of AROs and depreciation on asset retirement costs associated with its natural gas pipelines of its distribution business as an adjustment to the related regulatory assets or liabilities when revenue is recoverable from customers for AROs. The Companies report accretion of AROs and depreciation on asset retirement costs associated with decommissioning its nuclear power stations as an adjustment to the regulatory asset or liability for certain jurisdictions. Additionally, the Companies report accretion of AROs and depreciation on asset retirement costs associated with certain rider and prospective rider projects and other electric generation and distribution facilities as an adjustment to the regulatory asset for certain jurisdictions. Accretion of all other AROs and depreciation of all other asset retirement costs are reported in other operations and maintenance expense and depreciation expense, respectively, in the Consolidated Statements of Income.
Debt Issuance Costs	Debt Issuance Costs The Companies defer and amortize debt issuance costs and debt premiums or discounts over the expected lives of the respective debt issues, considering maturity dates and, if applicable, redemption rights held by others. Deferred debt issuance costs are recorded as a reduction in long-term debt in the Consolidated Balance Sheets. Amortization of the issuance costs is reported as interest expense. Unamortized costs associated with redemptions of debt securities prior to stated maturity dates are generally recognized and recorded in interest expense immediately. As permitted by regulatory authorities, gains or losses resulting from the refinancing or redemption of debt allocable to utility operations subject to cost-based rate regulation are deferred and amortized.
Investments	Investments Debt Securities Dominion Energy accounts for and classifies investments in debt securities as trading or available-for-sale securities. Virginia Power classifies investments in debt securities as available-for-sale securities. • Debt securities classified as trading securities include securities held by Dominion Energy in rabbi trusts associated with certain deferred compensation plans. These securities are reported in other investments in the Consolidated Balance Sheets at fair value with net realized and unrealized gains and losses included in other income in the Consolidated Statements of Income. • Debt securities classified as available-for-sale securities include all other debt securities, primarily comprised of securities held in the nuclear decommissioning trusts. These investments are reported at fair value in nuclear decommissioning trust funds in the Consolidated Balance Sheets. Net realized and unrealized gains and losses (including any credit-related impairments) on investments held in nuclear decommissioning trusts are deferred to a regulatory asset or liability, as applicable, for certain jurisdictions subject to cost-based regulation. For all other available-for-sale debt securities, including those held in Dominion Energy’s nonregulated generation nuclear decommissioning trusts, net realized gains and losses (including any credit-related impairments) are included in other income and unrealized gains and losses are reported as a component of AOCI, after-tax. In determining realized gains and losses for debt securities, the cost basis of the security is based on the specific identification method. Credit Impairment The Companies periodically review their available-for-sale debt securities to determine whether a decline in fair value should be considered credit related. If a decline in the fair value of any available-for-sale debt security is determined to be credit related, the credit-related impairment is recorded to an allowance included in nuclear decommissioning trust funds in the Companies’ Consolidated Balance Sheets at the end of the reporting period, with such allowance for credit losses subject to reversal in subsequent evaluations. Using information obtained from their nuclear decommissioning trust fixed-income investment managers, the Companies record in earnings, or defer as applicable for certain jurisdictions subject to cost-based regulation, any unrealized loss for a debt security when the manager intends to sell the debt security or it is more-likely-than-not that the manager will have to sell the debt security before recovery of its fair value up to its cost basis. If that is not the case, but the debt security is deemed to have experienced a credit loss, the Companies record the credit loss in earnings or defer as applicable for certain jurisdictions subject to cost-based regulation, with the remaining non-credit portion of the unrealized loss recorded in AOCI. Credit losses are evaluated primarily by considering the credit ratings of the issuer, prior instances of non-performance by the issuer and other factors Equity Securities with Readily Determinable Fair Values Equity securities with readily determinable fair values include securities held by Dominion Energy in rabbi trusts associated with certain deferred compensation plans and securities held by the Companies in the nuclear decommissioning trusts. The Companies record all equity securities with a readily determinable fair value, or for which they are permitted to estimate fair value using NAV (or its equivalent), at fair value in nuclear decommissioning trust funds and other investments in the Consolidated Balance Sheets. Net realized and unrealized gains and losses on equity securities held in the nuclear decommissioning trusts are deferred to a regulatory asset or liability, as applicable, for certain jurisdictions subject to cost-based regulation. For all other equity securities, including those held in Dominion Energy’s nonregulated generation nuclear decommissioning trusts and rabbi trusts, net realized and unrealized gains and losses are included in other income in the Consolidated Statements of Income. Equity Securities without Readily Determinable Fair Values The Companies account for illiquid and privately held securities without readily determinable fair values under either the equity method or cost method. Equity securities without readily determinable fair values include: • Equity method investments when the Companies have the ability to exercise significant influence, but not control, over the investee. Dominion Energy’s investments are included in investments in equity method affiliates in its Consolidated Balance Sheets, except for the liability to Atlantic Coast Pipeline or where such investments are classified as held for sale. Dominion Energy records equity method adjustments in other income in its Consolidated Statements of Income, including its proportionate share of investee income or loss, gains or losses resulting from investee capital transactions, amortization of certain differences between the carrying value and the equity in the net assets of the investee at the date of investment and other adjustments required by the equity method. • Cost method investments when the Companies do not have the ability to exercise significant influence over the investee. The Companies’ investments are included in other investments and nuclear decommissioning trust funds. Cost method investments are reported at cost less impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for identical or similar investments of the same issuer. Other-Than-Temporary Impairment The Companies periodically review their equity method investments to determine whether a decline in fair value should be considered other-than-temporary. If a decline in the fair value of any security is determined to be other-than-temporary, the investment is written down to its fair value at the end of the reporting period.
Inventories	Inventories Materials and supplies and fossil fuel inventories are valued primarily using the weighted-average cost method. Stored gas inventory is valued using the weighted-average cost method, except for East Ohio gas distribution operations, which are valued using the LIFO method and reflected in current assets held for sale in Dominion Energy's Consolidated Balance Sheets. Under the LIFO method, current stored gas inventory was valued at $ 14 million and $ 26 million at December 31, 2022 and December 31, 2021, respectively. Based on the average price of gas purchased during 2022 and 2021, the cost of replacing the current portion of stored gas inventory exceeded the amount stated on a LIFO basis by $ 129 million and $ 74 million, respectively. In 2022, Dominion Energy wrote off certain inventory balances associated with certain nonrenewable electric generation facilities resulting in a $40 million charge ($30 million after-tax) recorded in impairments and other charges (reflected in the Corporate and Other segment) in its Consolidated Statements of Income, including $19 million ($14 million after-tax) at Virginia Power for inventory not expected to be utilized at such facilities prior to their planned retirement in the first half of 2023.
Goodwill	Goodwill Dominion Energy evaluates goodwill for impairment annually as of April 1 and whenever an event occurs or circumstances change in the interim that would more-likely-than-not reduce the fair value of a reporting unit below its carrying amount.
New Accounting Standards	New Accounting Standards Debt with Conversion Options and Contracts in an Entity’s Own Equity In August 2020, the FASB issued revised accounting guidance for debt with conversion options and contracts in an entity’s own equity. The revised guidance eliminates the ability to assert cash settlement and exclude potential shares from the diluted EPS calculation for a contract that may be settled in stock or cash. The guidance became effective for Dominion Energy’s interim and annual reporting periods beginning January 1, 2022. Upon adoption, Dominion Energy applied the guidance using a modified retrospective approach and continued to apply the if-converted method to calculate diluted EPS in connection with any potentially dilutive instruments, or components of instruments, that may be settled in stock or cash.
Regulatory Matters Involving Potential Loss Contingencies	Regulatory Matters Involving Potential Loss Contingencies As a result of issues generated in the ordinary course of business, the Companies are involved in various regulatory matters. Certain regulatory matters may ultimately result in a loss; however, as such matters are in an initial procedural phase, involve uncertainty as to the outcome of pending reviews or orders, and/or involve significant factual issues that need to be resolved, it is not possible for the Companies to estimate a range of possible loss. For regulatory matters that the Companies cannot estimate, a statement to this effect is made in the description of the matter. Other matters may have progressed sufficiently through the regulatory process such that the Companies are able to estimate a range of possible loss. For regulatory matters that the Companies are able to reasonably estimate a range of possible losses, an estimated range of possible loss is provided, in excess of the accrued liability (if any) for such matters. Any estimated range is based on currently available information, involves elements of judgment and significant uncertainties and may not represent the Companies’ maximum possible loss exposure. The circumstances of such regulatory matters will change from time to time and actual results may vary significantly from the current estimate. For current matters not specifically reported below, management does not anticipate that the outcome from such matters would have a material effect on the Companies’ financial position, liquidity or results of operations.
Commitments and Contingencies	As a result of issues generated in the ordinary course of business, the Companies are involved in legal proceedings before various courts and are periodically subject to governmental examinations (including by regulatory authorities), inquiries and investigations. Certain legal proceedings and governmental examinations involve demands for unspecified amounts of damages, are in an initial procedural phase, involve uncertainty as to the outcome of pending appeals or motions, or involve significant factual issues that need to be resolved, such that it is not possible for the Companies to estimate a range of possible loss. For such matters that the Companies cannot estimate, a statement to this effect is made in the description of the matter. Other matters may have progressed sufficiently through the litigation or investigative processes such that the Companies are able to estimate a range of possible loss. For legal proceedings and governmental examinations that the Companies are able to reasonably estimate a range of possible losses, an estimated range of possible loss is provided, in excess of the accrued liability (if any) for such matters. The Companies maintain various insurance programs, including general liability insurance coverage which provides coverage for personal injury or wrongful death cases. Any accrued liability is recorded on a gross basis with a receivable also recorded for any probable insurance recoveries. Estimated ranges of loss are inclusive of legal fees and net of any anticipated insurance recoveries. Any estimated range is based on currently available information and involves elements of judgment and significant uncertainties. Any estimated range of possible loss may not represent the Companies’ maximum possible loss exposure. The circumstances of such legal proceedings and governmental examinations will change from time to time and actual results may vary significantly from the current estimate. For current proceedings not specifically reported below, management does not anticipate that the liabilities, if any, arising from such proceedings would have a material effect on the Companies’ financial position, liquidity or results of operations.
Guarantees, Surety Bonds and Letters of Credit	Dominion Energy also enters into guarantee arrangements on behalf of its consolidated subsidiaries, primarily to facilitate their commercial transactions with third parties. If any of these subsidiaries fail to perform or pay under the contracts and the counterparties seek performance or payment, Dominion Energy would be obligated to satisfy such obligation. To the extent that a liability subject to a guarantee has been incurred by one of Dominion Energy’s consolidated subsidiaries, that liability is included in the Consolidated Financial Statements. Dominion Energy is not required to recognize liabilities for guarantees issued on behalf of its subsidiaries unless it becomes probable that it will have to perform under the guarantees. Terms of the guarantees typically end once obligations have been paid. Dominion Energy currently believes it is unlikely that it would be required to perform or otherwise incur any losses associated with guarantees of its subsidiaries’ obligations.

Significant Accounting Polici_3

Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2022
Accounting Policies [Abstract]
Schedule of Checks Outstanding but Not Yet Presented for Payment	The following table illustrates the checks outstanding but not yet presented for payment and recorded in accounts payable for the Companies: At December 31, 2022 2021 (millions) Dominion Energy $ 35 $ 54 Virginia Power 21 15
Reconciliation of Total Cash, Restricted Cash and Equivalents	The following table provides a reconciliation of the total cash, restricted cash and equivalents reported within the Companies’ Consolidated Balance Sheets to the corresponding amounts reported within the Companies’ Consolidated Statements of Cash Flows for the years ended December 31, 2022, 2021, 2020 and 2019: Cash, Restricted Cash and Equivalents at End/Beginning of Year December 31, 2022 December 31, 2021 December 31, 2020 December 31, 2019 (millions) Dominion Energy Cash and cash equivalents (1) $ 153 $ 283 $ 179 $ 166 Restricted cash and equivalents (2) 188 125 68 103 Cash, restricted cash and equivalents shown in the $ 341 $ 408 $ 247 $ 269 Virginia Power Cash and cash equivalents $ 22 $ 26 $ 35 $ 17 Restricted cash and equivalents (3) 2 — — 7 Cash, restricted cash and equivalents shown in the $ 24 $ 26 $ 35 $ 24 (1) At December 31, 2022, 2021, 2020 and 2019, Dominion Energy had $ 34 million, $ 34 million, $ 21 million and $ 47 million, respectively, of cash and cash equivalents included in current assets held for sale. (2) At December 31, 2022, 2021, 2020 and 2019, Dominion Energy had $ 2 million, less than $ 1 million, $ 3 million and $ 12 million, respectively, of restricted cash and equivalents included in current assets held for sale with the remaining balances presented within other current assets in Dominion Energy's Consolidated Balance Sheets.. (3) Restricted cash and equivalents balances are presented within other current assets in Virginia Power’s Consolidated Balance Sheets .
Schedule of Supplemental Cash Flow Information	The following table provides supplemental disclosure of cash flow information related to Dominion Energy: Year Ended December 31, 2022 2021 2020 (millions) Cash paid during the year for: Interest and related charges, excluding capitalized amounts $ 1,408 $ 1,340 $ 1,519 Income taxes 139 160 292 Significant noncash investing and financing activities: (1)(2) Accrued capital expenditures 979 637 485 Leases (3) 144 96 173 (1) See Note 9 for noncash investing activities related to the acquisition of a noncontrolling interest in Wrangler and Dominion Privatization. (2) See Notes 18, 19, 20 and 23 for noncash financing activities related to the contribution of stock to Dominion Energy’s defined benefit pension plan, remarketing of Series A Preferred Stock, derivative restructuring and the issuance of common stock and transfer of property associated with the settlement of litigation. (3) Includes $ 34 million of finance leases and $ 110 million of operating leases entered in 2022, $ 47 million of finance leases and $ 49 million of operating leases entered in 2021 and $ 46 million of finance leases and $ 127 million of operating leases entered in 2020. The following table provides supplemental disclosure of cash flow information related to Virginia Power: Year Ended December 31, 2022 2021 2020 (millions) Cash paid (received) during the year for: Interest and related charges, excluding capitalized amounts $ 599 $ 501 $ 491 Income taxes ( 54 ) 109 452 Significant noncash investing activities: (1) Accrued capital expenditures 665 363 262 Leases (2) 116 79 32 (1) See Note 18 for non-cash financing activities related to derivative restructuring. (2) Includes $ 26 million of finance leases and $ 90 million of operating leases entered in 2022, $ 37 million of finance leases and $ 42 million of operating leases entered in 2021 and $ 32 million of finance leases entered in 2020.
Schedule of the inputs and assumptions used in measuring fair value	The inputs and assumptions used in measuring fair value include the following: Derivative Contracts Inputs and assumptions Commodity Interest Rate Foreign Currency Exchange Rate Investments Forward commodity prices X Transaction prices X Price volatility X Price correlation X Volumes X Commodity location X Interest rate curves X Foreign currency forward exchange rates X Quoted securities prices and indices X Securities trading information including volume and restrictions X Maturity X Interest rates X X X Credit quality of counterparties and the Companies X X X X Credit enhancements X X Notional value X X Time value X X X
Schedule of Depreciation Rates	The Companies’ average composite depreciation rates on utility property, plant and equipment are as follows: Year Ended December 31, 2022 2021 2020 (percent) Dominion Energy (1) Generation 2.71 2.63 2.51 Transmission 2.32 2.52 2.52 Distribution 2.80 2.85 2.75 Storage 2.69 2.94 2.93 General and other 4.42 4.48 4.77 Virginia Power Generation 2.84 2.69 2.52 Transmission 2.29 2.51 2.52 Distribution 2.76 3.18 3.19 General and other 4.78 5.08 5.09 (1) Excludes rates for depreciation reported as discontinued operations.
Property, Plant and Equipment	Dominion Energy’s nonutility property, plant and equipment is depreciated using the straight-line method over the following estimated useful lives: Asset Estimated Useful Lives Nonregulated generation-nuclear 44 years Nonregulated generation-other 15 - 35 years General and other 5 - 59 years

Acquisitions and Dispositions (

Acquisitions and Dispositions (Tables)	12 Months Ended
	Dec. 31, 2022
Results of Operations Reported within Discontinued Operations	The following table represents selected information regarding the results of operations, which were reported within discontinued operations in Dominion Energy’s Consolidated Statements of Income: Business Review Dispositions Year Ended December 31, 2022 East Ohio Transaction PSNC Transaction Questar Gas Transaction Other (millions) Operating revenue $ 1,043 $ 841 $ 1,341 $ 5 Operating expense 702 648 1,043 5 Other income (expense) 28 9 — — Interest and related charges 36 43 45 — Income before income taxes 333 159 253 — Income tax expense 45 34 50 — Net income attributable to Dominion Energy (1) $ 288 $ 125 $ 203 $ — (1) Excludes $( 3 ) million of income tax expense (benefit) attributable to consolidated state and interim period tax allocation adjustments for the year ended December 31, 2022. Disposition of Gas Transportation & Storage Operations Business Review Dispositions Year Ended December 31, 2021 Q-Pipe Group (1) East Ohio Transaction PSNC Transaction Questar Gas Transaction Other (millions) Operating revenue $ 254 $ 908 $ 613 $ 1,020 $ 4 Operating expense 76 620 451 761 5 Other income (expense) (2) 28 25 11 ( 1 ) — Interest and related charges 25 18 35 35 — Income (loss) before income taxes 181 295 138 223 ( 1 ) Income tax expense (benefit) 36 38 27 42 — Net income (loss) attributable to Dominion Energy (3) $ 145 $ 257 $ 111 $ 181 $ ( 1 ) (1) Operations associated with the Q-Pipe Group are through the December 31, 2021 closing date. (2) Q-Pipe Group includes a $ 25 million benefit associated with the termination of the Q-Pipe Transaction in 2021. (3) Excludes $ 19 million of income tax expense (benefit) attributable to consolidated state and interim period tax allocation adjustments for the year ended December 31, 2021. Disposition of Gas Transportation & Storage Operations Business Review Dispositions Year Ended December 31, 2020 GT&S Transaction (1) Q-Pipe Group East Ohio Transaction PSNC Transaction Questar Gas Transaction (millions) Operating revenue $ 1,710 $ 246 $ 771 $ 539 $ 938 Operating expense (2) 1,289 96 540 376 676 Other income (expense) 88 1 20 12 ( 2 ) Interest and related charges (benefit) (3) 372 20 ( 32 ) 38 32 Income before income taxes 137 131 283 137 228 Income tax expense (benefit) (4) 334 ( 9 ) 35 30 45 Net income (loss) including noncontrolling interests ( 197 ) 140 248 107 183 Noncontrolling interests 106 — — — — Net income (loss) attributable to Dominion Energy (5) $ ( 303 ) $ 140 $ 248 $ 107 $ 183 (1) Operations associated with the GT&S Transaction are through the November 1, 2020 close date. (2) GT&S Transaction includes a charge of $ 482 million ($ 359 million after-tax) recorded in 2020 associated with the probable abandonment of a significant portion of the Supply Header Project as well as the establishment of a $ 75 million ARO as a result of the cancellation of the Atlantic Coast Pipeline Project. (3) GT&S Transaction includes a loss of $ 237 million ($ 178 million after-tax) recorded in 2020 associated with cash flow hedges of debt-related items that were determined to be probable of not occurring. (4) Excludes $ 17 million income tax benefit recorded in 2021 associated with the GT&S Transaction. (5) Excludes $ 24 million of income tax expense (benefit) attributable to consolidated state and interim period tax allocation adjustments for the year ended December 31, 2020.
Schedule of Major Classes of Assets and Liabilities of Disposal Groups Reported As Held for Sale	The carrying value of major classes of assets and liabilities relating to the disposal groups, which are reported as held for sale in Dominion Energy's Consolidated Balance Sheets were as follows: At December 31, 2022 At December 31, 2021 Business Review Dispositions Business Review Dispositions East PSNC Transaction Questar Other East PSNC Transaction Questar Other (millions) Current assets (1) $ 544 $ 381 $ 803 $ 1 $ 439 $ 296 $ 422 $ 1 Property, plant and equipment, net 5,012 2,591 3,984 47 4,636 2,506 3,677 52 Other deferred charges and other (2) and 2,629 822 1,043 — 2,563 823 1,101 — Current liabilities (3) 634 151 612 1 557 133 263 1 Long-term debt (4) 2,287 798 1,245 — 1,786 798 995 — Other deferred credits and (5) 1,435 689 1,087 9 1,408 673 1,039 14 (1) Includes cash and cash equivalents of $ 6 million and $ 3 million within the East Ohio Transaction, less than $ 1 million and $ 14 million within the PSNC Transaction and $ 28 million and $ 17 million within the Questar Gas Transaction at December 31, 2022 and 2021, respectively. Also includes regulatory assets of $ 90 million and $ 56 million within the East Ohio Transaction, $ 95 million and $ 88 million within the PSNC Transaction and $ 273 million and $ 125 million within the Questar Gas Transaction at December 31, 2022 and 2021, respectively (2) Includes goodwill of $ 1.5 billion, $ 673 million and $ 983 million at both December 31, 2022 and 2021 within the East Ohio, PSNC and Questar Gas Transactions, respectively. Also includes regulatory assets of $ 751 million and $ 607 million within the East Ohio Transaction, $ 93 million and $ 103 million within the PSNC Transaction and $( 22 ) million and $ 47 million within the Questar Gas Transaction at December 31, 2022 and 2021, respectively. (3) Includes regulatory liabilities of $ 43 million and $ 51 million within the East Ohio Transaction, $ 11 million and $ 18 million within the PSNC Transaction and $ 144 million and $ 28 million within the Questar Gas Transaction at December 31, 2022 and 2021, respectively. (4) Includes East Ohio Unsecured Senior Notes due 2025 to 2052 at rates from 1.30 % to 6.38 % and with a weighted-average coupon rate for debt outstanding at December 31, 2022 of 3.13 %; PSNC Unsecured Senior Notes due 2026 to 2051 at rates from 3.10 % to 7.45 % and with a weighted-average coupon rate for debt outstanding at December 31, 2022 of 4.34 % and Questar Gas Unsecured Senior Notes due 2024 to 2052 at rates from 2.21 % to 7.20 % and with a weighted-average coupon rate for debt outstanding at December 31, 2022 of 3.99 %. (5) Includes regulatory liabilities of $ 749 million and $ 754 million within the East Ohio Transaction, $ 436 million and $ 435 million within the PSNC Transaction and $ 506 million and $ 500 million within the Questar Gas Transaction at December 31, 2022 and 2021, respectively.
GT&S Transaction | Dominion Energy Gas Holdings, LLC
Capital Expenditures and Significant Noncash Items Relating to the Disposal Groups	Capital expenditures and significant noncash items relating to the disposal groups included the following: Business Review Dispositions Year Ended December 31, 2022 East Ohio Transaction PSNC Transaction Questar Gas Transaction Other (millions) Capital expenditures $ 456 $ 153 $ 438 $ — Significant noncash items Depreciation, depletion and amortization 134 87 163 4 Accrued capital expenditures 53 16 31 — Disposition of Gas Transportation & Storage Operations Business Review Dispositions Year Ended December 31, 2021 Q-Pipe Group (1) East Ohio Transaction PSNC Transaction Questar Gas Transaction Other (millions) Capital expenditures (2) $ 34 $ 420 $ 195 $ 416 $ — Significant noncash items Depreciation, depletion and amortization — 122 81 168 4 Accrued capital expenditures — 27 41 25 — (1) Operations associated with the Q-Pipe Group are through the December 31, 2021 closing date. (2) In November 2021, Wexpro closed on an agreement with a natural gas gathering systems operator to purchase an existing natural gas gathering system in Wyoming including pipelines, compressors and dehydration equipment for total consideration of $ 41 million, included in the Questar Gas Transaction. Disposition of Gas Transportation & Storage Operations Business Review Dispositions Year Ended December 31, 2020 GT&S Transaction (1) Q-Pipe Group East Ohio Transaction PSNC Transaction Questar Gas Transaction Other (millions) Capital expenditures $ 292 $ 38 $ 393 $ 259 $ 377 $ — Significant noncash items Impairment of assets and other charges 469 — — — — — Depreciation, depletion and amortization 177 27 91 73 175 4 Accrued capital expenditures — 1 19 19 21 — (1) Operations associated with the GT&S Transaction are through the November 1, 2020 closing date.

Operating Revenue (Tables)

Operating Revenue (Tables)	12 Months Ended
	Dec. 31, 2022
Regulated And Unregulated Operating Revenue [Abstract]
Schedule of Operating Revenue	The Companies’ operating revenue consists of the following: Dominion Energy Virginia Power Year Ended December 31, 2022 2021 2020 2022 2021 2020 (millions) Regulated electric sales: Residential $ 5,261 $ 4,509 $ 4,833 $ 4,039 $ 3,366 $ 3,677 Commercial 4,480 3,194 3,102 3,647 2,417 2,342 Industrial 901 748 730 472 367 380 Government and other retail 1,235 921 868 1,172 862 804 Wholesale 234 175 128 132 107 90 Nonregulated electric sales 1,249 1,005 822 68 44 19 Regulated gas sales: Residential 331 322 271 Commercial 188 160 129 Other 168 108 68 Regulated gas transportation and storage 38 35 23 Other regulated revenues 296 248 303 277 234 299 Other nonregulated revenues (1)(2) 178 237 274 61 73 50 Total operating revenue from 14,559 11,662 11,551 9,868 7,470 7,661 Other revenues (1)(3) ( 614 ) ( 242 ) 368 ( 214 ) — 102 Total operating revenue $ 13,945 $ 11,420 $ 11,919 $ 9,654 $ 7,470 $ 7,763 (1) See Note 25 for amounts attributable to related parties and affiliates. (2) Includes sales of renewable energy credits were $ 42 million, $ 33 million and $ 20 million for the years ended December 31, 2022, 2021 and 2020, respectively, at Dominion Energy and $ 18 million, $ 21 million and $ 11 million for the years ended December 31, 2022, 2021 and 2020, respectively, at Virginia Power. (3) Includes alternative revenue of $ 72 million, $ 44 million and $ 84 million at both Dominion Energy and Virginia Power for years ended December 31, 2022, 2021 and 2020, respectively.

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Income tax expense for continuing operations including noncontrolling interests	Details of income tax expense for continuing operations including noncontrolling interests were as follows: Dominion Energy Virginia Power Year Ended December 31, 2022 2021 2020 2022 2021 2020 (millions) Current: Federal $ ( 76 ) $ ( 301 ) $ ( 388 ) $ 17 $ 67 $ 364 State 27 13 ( 91 ) ( 17 ) ( 13 ) 71 Total current expense (benefit) ( 49 ) ( 288 ) ( 479 ) — 54 435 Deferred: Federal Taxes before operating loss ( 63 ) 144 ( 16 ) 212 145 ( 226 ) Tax utilization expense of operating 35 42 42 — — — Investment tax credits ( 129 ) 250 311 ( 148 ) ( 39 ) ( 27 ) State 44 ( 26 ) 44 112 118 7 Total deferred expense (benefit) ( 113 ) 410 381 176 224 ( 246 ) Investment tax credit-gross deferral 18 121 42 18 121 42 Investment tax credit-amortization ( 4 ) ( 4 ) ( 3 ) ( 3 ) ( 2 ) ( 2 ) Total income tax expense (benefit) $ ( 148 ) $ 239 $ ( 59 ) $ 191 $ 397 $ 229 In 2022, Dominion Energy’s current income taxes reflect a benefit from continuing operations as the income tax expense associated with the East Ohio, PSNC and Questar Gas Transactions and Cove Point operations is reflected in discontinued operations.
Effective Income Tax	For continuing operations including noncontrolling interests, the statutory U.S. federal income tax rate reconciles to the Companies’ effective income tax rate as follows: Dominion Energy Virginia Power Year Ended December 31, 2022 2021 2020 2022 2021 2020 U.S. statutory rate 21.0 % 21.0 % 21.0 % 21.0 % 21.0 % 21.0 % Increases (reductions) resulting from: Recognition of taxes - sale of ( 74.7 ) — — Recognition of taxes - privatization — — — 2.4 — — State taxes, net of federal benefit ( 28.3 ) 1.8 ( 0.4 ) 4.6 4.6 4.8 Investment tax credits 108.9 ( 4.5 ) ( 18.6 ) ( 9.1 ) ( 3.0 ) ( 4.5 ) Production tax credits 12.0 ( 0.6 ) ( 1.3 ) ( 1.0 ) ( 0.6 ) ( 0.7 ) Valuation allowances — 0.2 1.7 — — — Reversal of excess deferred income 67.3 ( 2.8 ) ( 5.9 ) ( 3.8 ) ( 2.1 ) ( 2.2 ) State legislative change 0.3 ( 1.0 ) — — ( 0.7 ) — Change in tax status — — ( 3.3 ) — — — AFUDC—equity 5.0 ( 0.5 ) ( 0.1 ) ( 0.4 ) ( 0.5 ) — Changes in state deferred taxes ( 4.1 ) — ( 6.3 ) Absence of tax on noncontrolling — ( 0.2 ) 7.4 Settlements of uncertain tax positions — ( 1.7 ) — — — — Employee stock ownership plan 6.8 ( 0.4 ) ( 1.7 ) Other, net 5.7 ( 0.4 ) ( 0.7 ) ( 0.1 ) 0.1 ( 0.1 ) Effective tax rate 119.9 % 10.9 % ( 8.2 ) % 13.6 % 18.8 % 18.3 %
Deferred income taxes components	The Companies’ deferred income taxes consist of the following: Dominion Energy Virginia Power At December 31, 2022 2021 2022 2021 (millions) Deferred income taxes: Total deferred income tax assets $ 2,633 $ 2,782 $ 1,535 $ 1,373 Total deferred income tax liabilities 7,730 7,961 4,701 4,286 Total net deferred income tax liabilities $ 5,097 $ 5,179 $ 3,166 $ 2,913 Total deferred income taxes: Plant and equipment, primarily depreciation method and basis differences $ 4,257 $ 4,773 $ 3,355 $ 3,327 Excess deferred income taxes ( 847 ) ( 884 ) ( 616 ) ( 629 ) Unrecovered NND Project costs 479 508 DESC rate refund ( 89 ) ( 113 ) Toshiba Settlement ( 162 ) ( 189 ) Nuclear decommissioning 1,001 1,114 311 324 Deferred state income taxes 803 777 566 420 Federal benefit of deferred state income taxes ( 164 ) ( 163 ) ( 119 ) ( 88 ) Deferred fuel, purchased energy and gas costs 509 154 403 126 Pension benefits 330 282 ( 105 ) ( 119 ) Other postretirement benefits 58 68 111 93 Loss and credit carryforwards ( 1,782 ) ( 1,566 ) ( 751 ) ( 537 ) Valuation allowances 137 138 7 6 Partnership basis differences 466 390 Other 101 ( 109 ) 4 ( 10 ) Total net deferred income tax liabilities $ 5,097 $ 5,180 $ 3,166 $ 2,913 Deferred Investment Tax Credits – Regulated Operations 300 286 286 270 Total Deferred Taxes and Deferred Investment Tax Credits $ 5,397 $ 5,466 $ 3,452 $ 3,183
Summary of deductible loss and credit carryforwards	At December 31, 2022, Dominion Energy had the following deductible loss and credit carryforwards: Deductible Deferred Valuation Expiration Amount Tax Asset Allowance Period (millions) Federal losses $ 778 $ 163 $ — 2037 Federal investment credits — 874 — 2036 - 2042 Federal production and other credits — 82 — 2036 - 2042 State losses 5,665 305 ( 51 ) 2023 - 2042 State minimum tax credits — 271 — No expiration State investment and other credits — 127 ( 86 ) 2023 - 2032 Total $ 6,443 $ 1,822 $ ( 137 ) At December 31, 2022, Virginia Power had the following deductible loss and credit carryforwards: Deductible Deferred Valuation Expiration Amount Tax Asset Allowance Period (millions) Federal losses $ — $ — $ — Federal investment credits — 631 — 2036 - 2042 Federal production and other credits — 80 — 2036 - 2042 State losses 513 31 — 2042 State investment and other credits — 9 ( 7 ) 2024 Total $ 513 $ 751 $ ( 7 )
Reconciliation of changes in unrecognized tax benefits	A reconciliation of changes in Dominion Energy’s unrecognized tax benefits follows. Virginia Power does no t have any unrecognized tax benefits in the periods presented: Dominion Energy 2022 2021 2020 (millions) Beginning balance $ 128 $ 167 $ 175 Increases-prior period positions 8 48 18 Decreases-prior period positions ( 8 ) ( 59 ) ( 19 ) Increases-current period positions 2 2 1 Settlements with tax authorities ( 3 ) ( 26 ) — Expiration of statutes of limitations ( 10 ) ( 4 ) ( 8 ) Ending balance $ 117 $ 128 $ 167
Earliest tax year remaining	For each of the major states in which Dominion Energy operates or previously operated, the earliest tax year remaining open for examination is as follows: State Earliest Open Tax Year Pennsylvania (1) 2012 Connecticut 2019 Virginia (2) 2019 Utah (1) 2019 South Carolina 2019 (1) Considered a major state for entities presented in discontinued operations. (2) Considered a major state for Virginia Power’s operations.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2022
Fair Value Inputs, Assets, Quantitative Information	The following table presents the Companies' quantitative information about Level 3 fair value measurements at December 31, 2022. The range and weighted average are presented in dollars for market price inputs and percentages for price volatility. Dominion Energy Virginia Power Valuation Unobservable Fair Value (millions) Range Weighted (1) Fair Value (millions) Range Weighted (1) Assets Physical and financial forwards: FTRs Discounted Market price (3) $ 214 2 - 24 6 $ 214 2 - 24 6 Electricity Discounted Market price (3) 201 27 - 110 51 — — — Physical options: Natural gas (2) Option model Market price (3) 22 3 - 16 10 22 3 - 16 10 Price volatility (4) 11 %- 63 % 45 % 11 %- 63 % 45 % Total assets $ 437 $ 236 Liabilities Physical and financial forwards: Natural gas (2) Discounted Market price (3) $ 10 ( 2 )- 4 ( 1 ) $ 10 ( 2 )- 4 ( 1 ) FTRs Discounted Market price (3) 5 2 - 12 5 5 2 - 12 5 Total $ 15 $ 15 (1) Averages weighted by volume. (2) Includes basis. (3) Represents market prices beyond defined terms for Levels 1 and 2. (4) Represents volatilities unrepresented in published markets.
Fair Value, Option, Qualitative Disclosures	Sensitivity of the fair value measurements to changes in the significant unobservable inputs is as follows: Significant Unobservable Inputs Position Change to Input Impact on Fair Value Measurement Market price Buy Increase (decrease) Gain (loss) Market price Sell Increase (decrease) Loss (gain) Price volatility Buy Increase (decrease) Gain (loss) Price volatility Sell Increase (decrease) Loss (gain)
Fair Value, by Balance Sheet Grouping	The following table presents the Companies' assets and liabilities that are measured at fair value on a recurring basis for each hierarchy level, including both current and noncurrent portions: Dominion Energy Virginia Power Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total (millions) December 31, 2022 Assets Derivatives: Commodity $ — $ 332 $ 437 $ 769 $ — $ 32 $ 236 $ 268 Interest rate — 1,407 — 1,407 — 614 — 614 Investments (1) : Equity securities: U.S. 3,810 — — 3,810 2,028 — — 2,028 Fixed income: Corporate debt instruments — 576 — 576 — 360 — 360 Government securities 161 1,059 — 1,220 90 542 — 632 Total assets $ 3,971 $ 3,374 $ 437 $ 7,782 $ 2,118 $ 1,548 $ 236 $ 3,902 Liabilities Derivatives: Commodity $ — $ 911 $ 15 $ 926 $ — $ 333 $ 15 $ 348 Interest rate — 377 — 377 — 7 — 7 Foreign currency exchange — 101 — 101 — 101 — 101 Total liabilities $ — $ 1,389 $ 15 $ 1,404 $ — $ 441 $ 15 $ 456 December 31, 2021 Assets Derivatives: Commodity $ — $ 52 $ 230 $ 282 $ — $ 36 $ 110 $ 146 Interest rate — 323 — 323 — 146 — 146 Foreign currency exchange — 8 — 8 — 8 — 8 Investments (1) : Equity securities: U.S. 5,241 — — 5,241 2,420 — — 2,420 Fixed income: Corporate debt instruments — 881 — 881 — 531 — 531 Government securities 199 1,256 — 1,455 93 506 — 599 Cash equivalents and other ( 29 ) — — ( 29 ) ( 3 ) — — ( 3 ) Total assets $ 5,411 $ 2,520 $ 230 $ 8,161 $ 2,510 $ 1,227 $ 110 $ 3,847 Liabilities Derivatives: Commodity $ — $ 461 $ 8 $ 469 $ — $ 125 $ 8 $ 133 Interest rate — 399 — 399 — 337 — 337 Total liabilities $ — $ 860 $ 8 $ 868 $ — $ 462 $ 8 $ 470 Includes investments held in the nuclear decommissioning trusts and rabbi trusts. Excludes $ 404 million and $ 366 million of assets at Dominion Energy, inclusive of $ 161 million and $ 185 million at Virginia Power, at December 31, 2022 and 2021, respectively, measured at fair value using NAV (or its equivalent) as a practical expedient which are not required to be categorized in the fair value hierarchy.
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation	The following table presents the net change in the Companies' assets and liabilities measured at fair value on a recurring basis and included in the Level 3 fair value category: Dominion Energy Virginia Power 2022 2021 2020 2022 2021 2020 (millions) Beginning balance $ 222 $ 103 $ ( 37 ) $ 102 $ 103 $ ( 37 ) Total realized and unrealized gains (losses): Included in earnings: Operating Revenue 2 ( 9 ) — — — — Electric fuel and other energy-related purchases 444 10 ( 33 ) 382 4 ( 33 ) Discontinued operations — — 1 — — — Included in regulatory assets/liabilities 183 119 140 102 ( 1 ) 140 Settlements ( 455 ) ( 10 ) 33 ( 393 ) ( 4 ) 33 Purchases 28 — — 28 — — Sales — — ( 1 ) — — — Transfers out of Level 3 ( 2 ) 9 — — — — Ending balance $ 422 $ 222 $ 103 $ 221 $ 102 $ 103
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments	For the Companies’ financial instruments that are not recorded at fair value, the carrying amounts and estimated fair values are as follows: Dominion Energy Virginia Power Carrying Estimated Fair Value (1) Carrying Estimated Fair Value (1) (millions) December 31, 2022 Long-term debt (2) $ 39,680 $ 36,426 $ 15,616 $ 14,067 Supplemental credit facility borrowings 450 450 Junior subordinated notes (2) 1,387 1,340 December 31, 2021 Long-term debt (2) $ 35,996 $ 40,947 $ 13,753 $ 16,021 Junior subordinated notes (2) 1,386 1,470 (1) Fair value is estimated using market prices, where available, and interest rates currently available for issuance of debt with similar terms and remaining maturities. All fair value measurements are classified as Level 2. The carrying amount of debt issuances with short-term maturities and variable rates refinanced at current market rates is a reasonable estimate of their fair value. (2) Carrying amount includes current portions included in securities due within one year and amounts which represent the unamortized debt issuance costs and discount or premium. At December 31, 2021, the carrying amount of Dominion Energy’s long-term debt included the valuation of certain fair value hedges associated with fixed-rate debt of $ 2 million. There were no fair value hedges associated with fixed-rate debt at December 31, 2022. Additionally, Dominion Energy carrying amounts include portions classified as current liabilities held for sale and noncurrent liabilities held for sale at both December 31, 2022 and 2021.

Derivatives and Hedge Account_2

Derivatives and Hedge Accounting Activities (Tables)	12 Months Ended
	Dec. 31, 2022
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Offsetting Assets	The tables below present the Companies' derivative asset and liability balances by type of financial instrument, if the gross amounts recognized in its Consolidated Balance Sheets were netted with derivative instruments and cash collateral received or paid: Dominion Energy Gross Amounts Not Offset in the Consolidated Balance Sheet Virginia Power Gross Amounts Not Offset in the Consolidated Balance Sheet Gross Assets (1) Financial Cash Net Gross Assets (1) Financial Cash Net (millions) December 31, 2022 Commodity contracts: Over-the-counter $ 408 $ 28 $ — $ 380 $ 238 $ 7 $ — $ 231 Exchange 160 159 — 1 — — — — Interest rate contracts: Over-the-counter 1,407 248 — 1,159 614 38 — 576 Total derivatives, $ 1,975 $ 435 $ — $ 1,540 $ 852 $ 45 $ — $ 807 December 31, 2021 Commodity contracts: Over-the-counter $ 153 $ 13 $ — $ 140 $ 110 $ 8 $ — $ 102 Exchange 9 7 — 2 7 7 — — Interest rate contracts: Over-the-counter 323 49 — 274 146 20 — 126 Foreign currency exchange rate contracts: Over-the-counter 8 — — 8 8 — — 8 Total derivatives, $ 493 $ 69 $ — $ 424 $ 271 $ 35 $ — $ 236 (1) Excludes derivative assets of $ 201 million and $ 120 million at Dominion Energy, and $ 30 million and $ 29 million at Virginia Power, at December 31, 2022 and 2021, respectively, which are not subject to master netting or similar arrangements.
Offsetting Liabilities	Dominion Energy Gross Amounts Not Offset in the Consolidated Balance Sheet Virginia Power Gross Amounts Not Offset in the Consolidated Balance Sheet Gross Liabilities (1) Financial Cash Net Gross Liabilities (1) Financial Cash Net (millions) December 31, 2022 Commodity contracts: Over-the-counter $ 443 $ 34 $ 71 $ 338 $ 146 $ 13 $ 71 $ 62 Exchange 483 159 324 — 176 — 176 — Interest rate contracts: Over-the-counter 377 210 1 166 7 — — 7 Foreign currency exchange rate contracts: Over-the-counter 101 32 — 69 101 32 — 69 Total derivatives, $ 1,404 $ 435 $ 396 $ 573 $ 430 $ 45 $ 247 $ 138 December 31, 2021 Commodity contracts: Over-the-counter $ 95 $ 13 $ 54 $ 28 $ 84 $ 8 $ 54 $ 22 Exchange 374 7 367 — 43 7 36 — Interest rate contracts: Over-the-counter 399 49 11 339 337 20 — 317 Total derivatives, $ 868 $ 69 $ 432 $ 367 $ 464 $ 35 $ 90 $ 339 (1) Excludes derivative liabilities of $ 26 million and $ 6 million at Virginia Power at December 31, 2022 and 2021, respectively, which are not subject to master netting or similar arrangements. Dominion Energy did no t have any derivative liabilities at December 31, 2022 or 2021 which were not subject to master netting or similar arrangements.
Schedule of Volume of Derivative Activity	The following table presents the volume of the Companies' derivative activity as of December 31, 2022. These volumes are based on open derivative positions and represent the combined absolute value of their long and short positions, except in the case of offsetting transactions, for which they represent the absolute value of the net volume of their long and short positions. Dominion Energy Virginia Power Current Noncurrent Current Noncurrent Natural Gas (bcf): Fixed price 50 2 41 2 Basis (1) 154 414 140 407 Electricity (MWh in millions): Fixed price 16 35 8 9 FTRs 45 — 45 — Oil (Gal in millions) 6 — 6 — Interest rate (2) (in millions) $ 2,003 $ 10,707 $ 1,600 $ 1,950 Foreign currency exchange rate (2) (in millions) Danish Krone 394 kr. 4,167 kr. 394 kr. 4,167 kr. Euro € 780 € 2,131 € 780 € 2,131 (1) Includes options. Maturity is determined based on final settlement period.
Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss)	The following table presents selected information related to losses on cash flow hedges included in AOCI in the Companies' Consolidated Balance Sheets at December 31, 2022: Dominion Energy Virginia Power AOCI After-Tax Amounts Expected to be Reclassified to Earnings During the Next 12 Months After-Tax Maximum Term AOCI After-Tax Amounts Expected to be Reclassified to Earnings During the Next 12 Months After-Tax Maximum Term (millions) Interest rate $ ( 249 ) $ ( 33 ) 396 months $ 16 $ ( 1 ) 396 months Total $ ( 249 ) $ ( 33 ) $ 16 $ ( 1 )
Schedule of Amounts Recorded on Consolidated Balance Sheet Related to Cumulative Basis Adjustments for Fair Value Hedges	The following table presents the amounts recorded on Dominion Energy's Consolidated Balance Sheets related to cumulative basis adjustments for fair value hedges all of which related to discontinued hedging relationships at both December 2022 and 2021, respectively: Carrying Amount of the Hedged Assets Cumulative Amount of Fair Value December 31, 2022 December 31, 2021 December 31, 2022 December 31, 2021 (millions) Long-term debt $ — $ ( 352 ) $ — $ ( 2 )
Fair Value of Derivatives	Fair Value and Gains and Losses on Derivative Instruments The following tables present the fair values of the Companies' derivatives and where they are presented in their Consolidated Balance Sheets: Dominion Energy Virginia Power Fair Value – Fair Value – Total Fair Fair Value – Fair Value – Total Fair (millions) At December 31, 2022 ASSETS Current Assets Commodity $ — $ 532 $ 532 $ — $ 264 $ 264 Interest rate 501 104 605 501 — 501 Total current derivative assets (1) 501 636 1,137 501 264 765 Noncurrent Assets Commodity — 237 237 — 4 4 Interest rate 113 689 802 113 — 113 Total noncurrent derivative assets (2)(3) 113 926 1,039 113 4 117 Total derivative assets $ 614 $ 1,562 $ 2,176 $ 614 $ 268 $ 882 LIABILITIES Current Liabilities Commodity $ — $ 700 $ 700 $ — $ 290 $ 290 Interest rate — 70 70 — — — Foreign currency — 8 8 — 8 8 Total current derivative liabilities (4) — 778 778 — 298 298 Noncurrent Liabilities Commodity — 226 226 — 58 58 Interest rate 7 300 307 7 — 7 Foreign currency — 93 93 — 93 93 Total noncurrent derivative liabilities (5)(6) 7 619 626 7 151 158 Total derivative liabilities $ 7 $ 1,397 $ 1,404 $ 7 $ 449 $ 456 At December 31, 2021 ASSETS Current Assets Commodity $ — $ 103 $ 103 $ — $ 74 $ 74 Interest rate 1 17 18 1 — 1 Foreign currency — 1 1 — 1 1 Total current derivative assets (1) 1 121 122 1 75 76 Noncurrent Assets Commodity — 179 179 — 72 72 Interest rate 145 160 305 145 — 145 Foreign currency — 7 7 — 7 7 Total noncurrent derivative assets (3) 145 346 491 145 79 224 Total derivative assets $ 146 $ 467 $ 613 $ 146 $ 154 $ 300 LIABILITIES Current Liabilities Commodity $ — $ 304 $ 304 $ — $ 92 $ 92 Interest rate 42 13 55 42 — 42 Total current derivative liabilities (4) 42 317 359 42 92 134 Noncurrent Liabilities Commodity — 165 165 — 41 41 Interest rate 295 49 344 295 — 295 Total noncurrent derivative liabilities (5)(6) 295 214 509 295 41 336 Total derivative liabilities $ 337 $ 531 $ 868 $ 337 $ 133 $ 470 (1) Includes $ 118 million and $ 6 million reported in current assets held for sale in Dominion Energy's Consolidated Balance Sheets at December 31, 2022 and 2021, respectively. (2) Includes $ 1 million reported in noncurrent assets held for sale in Dominion Energy's Consolidated Balance Sheets at December 31, 2022. (3) Virginia Power’s noncurrent derivative assets are presented in other deferred charges and other assets in its Consolidated Balance Sheets. (4) Includes $ 6 million and $ 3 million reported in current liabilities held for sale in Dominion Energy's Consolidated Balance Sheets at December 31, 2022 and 2021, respectively. (5) Includes $ 1 million reported in noncurrent liabilities held for sale in Dominion Energy's Consolidated Balance Sheets at both December 31, 2022 and 2021. (6) Virginia Power’s noncurrent derivative liabilities are presented in other deferred credits and other liabilities in its Consolidated Balance Sheets.
Schedule of Cash Flow Hedging Instruments, Statements of Financial Performance and Financial Position, Location	The following tables present the gains and losses on the Companies' derivatives, as well as where the associated activity is presented in their Consolidated Balance Sheets and Statements of Income: Dominion Energy Virginia Power Derivatives in cash flow Amount of Gain (1) Amount of Gain Increase (Decrease) (2) Amount of Gain (1) Amount of Gain Increase (Decrease) (2) (millions) Year Ended December 31, 2022 Derivative type and location of gains (losses): Interest rate (3) $ 89 $ ( 57 ) $ 855 $ 80 $ ( 2 ) $ 854 Total $ 89 $ ( 57 ) $ 855 $ 80 $ ( 2 ) $ 854 Year Ended December 31, 2021 Derivative type and location of gains (losses): Commodity (4) $ ( 1 ) Interest rate (3) $ 21 ( 60 ) $ 135 $ 17 $ ( 3 ) $ 130 Total $ 21 $ ( 61 ) $ 135 $ 17 $ ( 3 ) $ 130 Year Ended December 31, 2020 Derivative type and location of gains (losses): Commodity: Operating revenue $ 25 Purchased gas ( 4 ) Discontinued 2 Total commodity $ — $ 23 $ — $ — $ — $ — Interest rate: Interest and $ ( 83 ) $ ( 37 ) $ ( 2 ) $ ( 338 ) Discontinued ( 236 ) Total interest rate $ ( 309 ) $ ( 319 ) $ ( 332 ) $ ( 37 ) $ ( 2 ) $ ( 338 ) Foreign currency (5) ( 11 ) ( 6 ) — — Total $ ( 320 ) $ ( 302 ) $ ( 332 ) $ ( 37 ) $ ( 2 ) $ ( 338 ) (1) Amounts deferred into AOCI have no associated effect in the Companies' Consolidated Statements of Income. (2) Represents net derivative activity deferred into and amortized out of regulatory assets/liabilities. Amounts deferred into regulatory assets/liabilities have no associated effect in the Companies' Consolidated Statements of Income. (3) Amounts recorded in the Companies' Consolidated Statements of Income are classified in interest and related charges. (4) Amounts recorded in Dominion Energy’s Consolidated Statements of Income are classified in purchased gas. (5) Amounts recorded in Dominion Energy’s Consolidated Statements of Income are classified in discontinued operations.
Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance	Amount of Gain (Loss) Recognized in Income on Derivatives (1)(2) Derivatives not designated as hedging instruments Dominion Energy Virginia Power Year Ended December 31, 2022 2021 2020 2022 2021 2020 (millions) Derivative type and location of gains (losses): Commodity: Operating revenue $ ( 729 ) $ ( 487 ) $ 73 $ ( 303 ) $ ( 62 ) $ ( 104 ) Purchased gas 13 ( 1 ) ( 20 ) Electric fuel and other energy-related purchases 514 16 ( 104 ) 453 9 — Discontinued operations 8 — ( 11 ) Interest rate: Interest and related charges 406 89 87 Discontinued operations 244 8 5 Foreign currency exchange rate: Discontinued operations — — 12 Total $ 456 $ ( 375 ) $ 42 $ 150 $ ( 53 ) $ ( 104 ) Includes derivative activity amortized out of regulatory assets/liabilities. Amounts deferred into regulatory assets/liabilities have no associated effect in the Companies' Consolidated Statements of Income. (2) Excludes amounts related to foreign currency exchange rate derivatives that are deferred to plant under construction within property, plant and equipment and regulatory assets/liabilities that will begin to amortize once the CVOW Commercial Project is placed in service.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2022
Earnings Per Share [Abstract]
Earnings Per Share Computation	The following table presents the calculation of Dominion Energy’s basic and diluted EPS: 2022 2021 2020 (millions, except EPS) Net income attributable to Dominion Energy from continuing operations $ 22 $ 1,931 $ 1,039 Preferred stock dividends (see Note 19) ( 93 ) ( 68 ) ( 65 ) Net income attributable to Dominion Energy from continuing operations - Basic ( 71 ) 1,863 974 Dilutive effect of 2019 Equity Units (1) — — ( 11 ) Net income attributable to Dominion Energy from continuing operations - Diluted $ ( 71 ) $ 1,863 $ 963 Net income (loss) attributable to Dominion Energy from discontinued operations - $ 972 $ 1,357 $ ( 1,440 ) Average shares of common stock outstanding – Basic 823.9 807.8 831.0 Net effect of dilutive securities (2) — 0.7 — Average shares of common stock outstanding – Diluted 823.9 808.5 831.0 EPS from continuing operations - Basic $ ( 0.09 ) $ 2.30 $ 1.17 EPS from discontinued operations - Basic 1.18 1.68 ( 1.73 ) EPS attributable to Dominion Energy - Basic $ 1.09 $ 3.98 $ ( 0.56 ) EPS from continuing operations - Diluted $ ( 0.09 ) $ 2.30 $ 1.16 EPS from discontinued operations - Diluted 1.18 1.68 ( 1.73 ) EPS attributable to Dominion Energy - Diluted $ 1.09 $ 3.98 $ ( 0.57 ) (1) As discussed in Note 19, effective in June 2022 through its redemption in September 2022, the Series A Preferred Stock was considered to be mandatorily redeemable and was classified in current liabilities. In accordance with revised accounting standards effective January 2022, a fair value adjustment, if dilutive, of the Series A Preferred Stock was no longer included in applying the if converted method to the 2019 Equity Units. In addition, diluted net income was no longer reduced by the Series A Preferred Stock dividends. No fair value adjustment was necessary for 2021. (2) Dilutive securities for 2021 consist primarily of stock potentially to be issued to satisfy the obligation under a settlement agreement with the SCDOR (applying the if converted method) as well as forward sales agreements entered into in November 2021 and settled in December 2022 (applying the treasury stock method). See Notes 20 and 23 for additional information.

Investments (Tables)

Investments (Tables)	12 Months Ended
	Dec. 31, 2022
Equity and Debt Securities and Cash Equivalents and Cost Method Investments in Decommissioning Trust Funds	The Companies' decommissioning trust funds are summarized below: Dominion Energy Virginia Power Amortized Total Total Allowance for Credit Losses Fair Amortized Total Total Allowance for Credit Losses Fair (millions) December 31, 2022 Equity securities: (1) U.S. $ 1,378 $ 2,501 $ ( 46 ) $ 3,833 $ 858 $ 1,304 $ ( 35 ) $ 2,127 Fixed income securities: (2) Corporate debt 640 1 ( 65 ) $ — 576 406 1 ( 47 ) $ — 360 Government 1,252 4 ( 70 ) — 1,186 664 2 ( 35 ) — 631 Common/ 98 — — — 98 61 — — — 61 Insurance contracts 221 — — 221 Cash equivalents (3) 43 — — — 43 23 — — — 23 Total $ 3,632 $ 2,506 $ ( 181 ) (4) $ — $ 5,957 $ 2,012 $ 1,307 $ ( 117 ) (4) $ — $ 3,202 December 31, 2021 Equity securities: (1) U.S. $ 1,567 $ 3,734 $ ( 13 ) $ 5,288 $ 841 $ 1,720 $ ( 11 ) $ 2,550 Fixed income securities: (2) Corporate debt 854 32 ( 5 ) $ — 881 517 17 ( 3 ) $ — 531 Government 1,382 43 ( 7 ) — 1,418 584 16 ( 2 ) — 598 Common/ 168 4 — — 172 53 — — — 53 Insurance contracts 255 — — 255 Cash equivalents (3) 9 2 ( 75 ) — ( 64 ) 2 — — — 2 Total $ 4,235 $ 3,815 $ ( 100 ) (4) $ — $ 7,950 $ 1,997 $ 1,753 $ ( 16 ) (4) $ — $ 3,734 (1) Unrealized gains and losses on equity securities are included in other income and the nuclear decommissioning trust regulatory liability as discussed in Note 2. (2) Unrealized gains and losses on fixed income securities are included in AOCI and the nuclear decommissioning trust regulatory liability as discussed in Note 2. Changes in allowance for credit losses are included in other income. (3) Dominion Energy includes pending sales of securities of $ 42 million and pending purchases of securities of $ 35 million at December 31, 2022 and 2021, respectively. Virginia Power includes pending sales of securities of $ 24 million and $ 5 million at December 31, 2022 and 2021, respectively. (4) Dominion Energy's fair value of securities in an unrealized loss position was $ 1.6 billion and $ 883 million at December 31, 2022 and 2021, respectively. Virginia Power's fair value of securities in an unrealized loss position was $ 946 million and $ 425 million at December 31, 2022 and 2021, respectively.
Unrealized Gain Loss on Equity	The portion of unrealized gains and losses that relates to equity securities held within Dominion Energy and Virginia Power's nuclear decommissioning trusts is summarized below: Dominion Energy Virginia Power Year Ended December 31, 2022 2021 2020 2022 2021 2020 (millions) Net gains (losses) recognized during the period $ ( 848 ) $ 1,072 $ 512 $ ( 436 ) $ 552 $ 224 Less: Net (gains) losses recognized during the 8 ( 346 ) ( 16 ) ( 7 ) ( 190 ) ( 6 ) Unrealized gains (losses) recognized during the (1) $ ( 840 ) $ 726 $ 496 $ ( 443 ) $ 362 $ 218 (1) Included in other income and the nuclear decommissioning trust regulatory liability as discussed in Note 2.
Investments Classified by Contractual Maturity Date	The fair value of Dominion Energy and Virginia Power's fixed income securities with readily determinable fair values held in nuclear decommissioning trust funds at December 31, 2022 by contractual maturity is as follows: Dominion Energy Virginia Power (millions) Due in one year or less $ 146 $ 80 Due after one year through five years 511 280 Due after five years through ten years 442 279 Due after ten years 761 413 Total $ 1,860 $ 1,052
Marketable Securities	Presented below is selected information regarding Dominion Energy and Virginia Power's equity and fixed income securities with readily determinable fair values held in nuclear decommissioning trust funds. Dominion Energy Virginia Power Year Ended December 31, 2022 2021 2020 2022 2021 2020 (millions) Proceeds from sales $ 3,282 $ 3,985 $ 4,278 $ 1,538 $ 1,791 $ 884 Realized gains (1) 143 441 340 48 228 88 Realized losses (1) 296 91 297 107 35 68 (1) Includes realized gains and losses recorded to the nuclear decommissioning trust regulatory liability as discussed in Note 2.
Investments Accounts Under Equity Method of Accounting	Investments that Dominion Energy accounts for under the equity method of accounting are as follows: Investment Company Ownership% Balance Description As of December 31, 2022 2021 (millions) Cove Point 50 % $ 2,673 (3) $ 2,738 (3) LNG import/export and storage facility Atlantic Coast Pipeline 53 % — (4) — (4) Gas transmission system Wrangler 15 % (2) — 68 Nonregulated retail energy marketing Align RNG (1) 50 % 103 74 Renewable natural gas Dominion Privatization 50 % 176 — Military electric and gas Other various 60 (5) 52 (5) Total $ 3,012 $ 2,932 (1) Dominion Energy’s unfunded commitment to be made to Align RNG by the end of 2022 was $ 8 million at December 31, 2021. The commitment was fully paid in January 2022. (2) Dominion Energy’s sold its remaining 15 % ownership interest in March 2022, following a previous sale of 5 % of its ownership interest in 2021. See discussion below. (3) Presented in noncurrent assets held for sale in Dominion Energy's Consolidated Balance Sheets at December 31, 2022 and 2021. (4) Dominion Energy’s Consolidated Balance Sheets include a liability associated with its investment in Atlantic Coast Pipeline of $ 114 million and $ 113 million at December 31, 2022 and 2021, respectively, presented in other current liabilities. See discussion below for additional information. (5) Includes balances presented in noncurrent assets held for sale in Dominion Energy's Consolidated Balance Sheets of $ 43 million and $ 32 million as of December 31, 2022 and 2021, respectively.

Property Plant And Equipment (T

Property Plant And Equipment (Tables)	12 Months Ended
	Dec. 31, 2022
Property, Plant and Equipment	Major classes of property, plant and equipment and their respective balances for the Companies are as follows: Dominion Energy Virginia Power At December 31, 2022 2021 2022 2021 (millions) Dominion Energy Utility: Generation $ 23,720 $ 23,378 $ 17,611 $ 17,325 Transmission 15,179 13,798 13,034 11,760 Distribution 20,154 19,370 14,681 13,621 Storage 76 76 — — Nuclear fuel 2,373 2,306 1,823 1,702 General and other 1,625 1,527 1,019 912 Plant under construction 5,308 3,393 4,685 2,865 Total utility 68,435 63,848 52,853 48,185 Non-jurisdictional - including plant under construction 1,834 1,694 1,834 1,694 Nonutility: Nonregulated generation-nuclear 1,935 1,773 — — Nonregulated generation-solar 411 1,941 — — Nuclear fuel 954 1,056 — — Other-including plant under construction 1,609 1,184 10 11 Total nonutility 4,909 5,954 10 11 Total property, plant and equipment $ 75,178 $ 71,496 $ 54,697 $ 49,890
Schedule of Jointly Owned Utility Plants	The Companies proportionate share of jointly-owned power stations at December 31, 2022 is as follows: Bath County Pumped Storage Station (1) North Anna Units 1 and 2 (1) Clover Power Station (1) Millstone Unit 3 (2) Summer Unit 1 (2) (millions, except percentages) Ownership interest 60 % 88.4 % 50 % 93.5 % 66.7 % Plant in service 1,066 2,540 611 1,487 1,532 Accumulated depreciation ( 730 ) ( 1,402 ) ( 282 ) ( 563 ) ( 724 ) Nuclear fuel — 792 — 551 550 Accumulated amortization of nuclear fuel — ( 602 ) — ( 459 ) ( 347 ) Plant under construction 3 253 — 68 87 (1) Units jointly owned by Virginia Power. (2) Unit jointly owned by Dominion Energy.
Virginia Electric and Power Company
Schedule of Nonregulated Solar Projects	The following table presents acquisitions by Virginia Power of non-jurisdictional solar projects (reflected in Dominion Energy Virginia). Virginia Power has claimed or expects to claim federal investment tax credits on the projects, except as otherwise noted. Project Name Date Agreement Date Agreement Project Location Project Cost (1) Date of Commercial MW Capacity Grasshopper (2) August 2018 May 2019 Virginia 128 October 2020 80 Chestnut August 2018 May 2019 North Carolina 127 January 2020 75 Ft. Powhatan June 2019 June 2019 Virginia 267 January 2022 150 Belcher (3) June 2019 August 2019 Virginia 164 June 2021 88 Bedford August 2019 November 2019 Virginia 106 November 2021 70 Maplewood October 2019 October 2019 Virginia 210 December 2022 120 Rochambeau December 2019 January 2020 Virginia 35 December 2021 20 Pumpkinseed May 2020 May 2020 Virginia 138 September 2022 60 Bookers Mill February 2021 June 2021 Virginia 225 Expected 2023 (4) 127 (1) Includes acquisition costs. (2) Referred to as Butcher Creek once placed in service. (3) Referred to as Desper once placed in service. (4) Virginia Power expects to claim production tax credits on the energy generated and sold by project.
Dominion Energy
Schedule of Nonregulated Solar Projects	In addition, the following table presents acquisitions by Dominion Energy of solar projects (reflected in Contracted Energy). Dominion Energy has claimed or expects to claim federal investment tax credits on the projects, except as otherwise noted. Project Name Date Agreement Date Agreement Project Location Project Cost (1) Date of Commercial MW Capacity Greensville August 2019 August 2019 Virginia $ 127 December 2020 80 Myrtle August 2019 August 2019 Virginia 32 June 2020 15 Blackville May 2020 May 2020 South Carolina 12 December 2020 7 Denmark May 2020 May 2020 South Carolina 14 December 2020 6 Yemassee May 2020 August 2020 South Carolina 17 January 2021 10 Trask May 2020 October 2020 South Carolina 22 March 2021 12 Hardin I June 2020 June 2020 Ohio 240 Split (2) 150 Madison July 2020 July 2020 Virginia 165 Expected 2024 (3) 62 Hardin II August 2020 Terminated (4) Atlanta Farms March 2022 May 2022 Ohio 390 Expected split (3)(5) 200 (1) Includes acquisition costs. (2) In December 2020 and January 2021, 97 MW and 53 MW of the project commenced commercial operations, respectively. (3) Dominion Energy expects to claim production tax credits on the energy generated and sold by project. (4) In January 2023, Dominion Energy terminated its agreement, without penalty, to acquire Hardin II. (5) Expected to be split between 2023 and 2024.

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2022
Goodwill And Intangible Assets Disclosure [Abstract]
Segment allocation of goodwill	The changes in Dominion Energy’s carrying amount and segment allocation of goodwill are presented below: Dominion Energy Virginia Dominion Energy South Carolina Contracted Energy Corporate and Other Total (millions) Dominion Energy Balance at December 31, 2020 (1) $ 2,106 $ 1,521 $ 492 $ 110 $ 4,229 Acquisition of Birdseye (2) — — 24 — 24 Balance at December 31, 2021 (1) $ 2,106 $ 1,521 $ 516 $ 110 $ 4,253 Sale of Hope (2) — — — ( 110 ) ( 110 ) Balance at December 31, 2022 (1) $ 2,106 $ 1,521 $ 516 $ — $ 4,143 (1) Goodwill amounts do not contain any accumulated impairment losses. (2) See Note 3 for more information .
Components of intangible assets	The components of intangible assets are as follows: 2022 2021 At December 31, Gross Carrying Amount Accumulated Amortization Gross Carrying Amount Accumulated Amortization (millions) Dominion Energy Software, licenses and other (1) $ 1,723 $ 927 $ 1,324 $ 612 Virginia Power Software, licenses and other (1) $ 1,113 $ 577 $ 685 $ 290 (1) Includes $ 253 million and $ 158 million of RGGI allowances purchased and consumed in 2022 and 2021, respectively, with deferral to a regulatory asset.
Annual amortization expense of intangible assets	Annual amortization expense for these intangible assets is estimated to be as follows: 2023 2024 2025 2026 2027 (millions) Dominion Energy $ 68 $ 61 $ 54 $ 43 $ 25 Virginia Power $ 33 $ 30 $ 26 $ 20 $ 10

Regulatory Assets and Liabili_2

Regulatory Assets and Liabilities (Tables)	12 Months Ended
	Dec. 31, 2022
Regulated Operations [Abstract]
Schedule of Regulatory Assets and Liabilities	Regulatory assets and liabilities include the following: Dominion Energy Virginia Power At December 31, 2022 2021 2022 2021 (millions) Dominion Energy Regulatory assets: Deferred cost of fuel used in electric generation (1) $ 603 $ 251 $ 133 $ 131 Deferred rider costs for Virginia electric utility (2) 152 72 152 72 Ashpond and landfill closure costs (3) 221 193 221 193 Deferred nuclear refueling outage costs (4) 83 79 83 79 NND Project costs (5) 138 138 Deferred early plant retirement charges (6) 226 226 226 226 Derivatives (7) 256 112 251 105 Other 204 152 74 44 Regulatory assets-current 1,883 1,223 1,140 850 Unrecognized pension and other postretirement benefit costs (8) 891 488 4 3 Deferred rider costs for Virginia electric utility (2) 363 489 363 489 Interest rate hedges (9) 169 899 — 604 AROs and related funding (10) 380 311 NND Project costs (5) 2,088 2,226 Ash pond and landfill closure costs (3) 2,051 2,223 2,049 2,223 Deferred cost of fuel used in electric generation (1) 1,551 409 1,551 409 Deferred early plant retirement charges (6) — 226 — 226 Derivatives (7) 254 34 148 34 Other 518 581 132 142 Regulatory assets-noncurrent 8,265 7,886 4,247 4,130 Total regulatory assets $ 10,148 $ 9,109 $ 5,387 $ 4,980 Regulatory liabilities: Provision for future cost of removal and AROs (11) 111 154 111 154 Reserve for refunds and rate credits to electric utility (12) 125 420 25 306 Income taxes refundable through future rates (13) 100 106 65 63 Monetization of guarantee settlement (14) 67 67 Derivatives (7) 211 65 176 51 Other 134 77 129 73 Regulatory liabilities-current 748 889 506 647 Income taxes refundable through future rates (13) 3,169 3,304 2,272 2,335 Provision for future cost of removal and AROs (11) 1,731 1,624 1,135 1,043 Nuclear decommissioning trust (15) 1,685 2,158 1,685 2,158 Monetization of guarantee settlement (14) 702 831 Interest rate hedges (9) 240 — 240 — Reserve for refunds and rate credits to electric utility (12) 325 448 — 25 Unrecognized pension and other postretirement benefit costs (8) 10 189 Overrecovered other postretirement benefit costs (16) 140 105 Derivatives (7) 234 236 — 62 Other 181 129 167 117 Regulatory liabilities-noncurrent 8,417 9,024 5,499 5,740 Total regulatory liabilities $ 9,165 $ 9,913 $ 6,005 $ 6,387 (1) Reflects deferred fuel expenses for the Virginia and North Carolina jurisdictions of Virginia Power's electric generation operations and additionally for Dominion Energy, deferred fuel expenses for the South Carolina jurisdiction of its electric generation operations. Dominion Energy reflects a $66 million reduction recorded in 2022 from the application of a portion of the monetization of guarantee settlement previously reflected as regulatory liabilities associated with the approval of DESC’s cost of fuel proceedings. See Note 13 for additional information. (2) Reflects deferrals under Virginia Power’s electric transmission FERC formula rate and the deferral of costs associated with certain current and prospective rider projects. See Note 13 for additional information. (3) Primarily reflects legislation in Virginia which requires any CCR asset located at certain Virginia Power stations to be closed by removing the CCR to an approved landfill or through beneficial reuse. These deferred costs are expected to be collected over a period between 15 and 18 years commencing December 2021 through Rider CCR. Virginia Power is entitled to collect carrying costs on uncollected expenditures once expenditures have been made. (4) Legislation in Virginia requires Virginia Power to defer operation and maintenance costs incurred in connection with the refueling of any nuclear-powered generating plant. These deferred costs will be amortized over the refueling cycle, not to exceed 18 months . (5) Reflects expenditures by DESC associated with the NND Project, which pursuant to the SCANA Merger Approval Order, will be recovered from DESC electric service customers over a 20-year period ending in 2039. (6) Reflects amounts from the early retirements of certain coal- and oil-fired generating units to be amortized through 2023 in accordance with the settlement of the 2021 Triennial Review. See Note 13 for additional information. (7) Represents changes in the fair value of derivatives, excluding separately presented interest rate hedges, that following settlement are expected to be recovered from or refunded to customers. (8) Represents unrecognized pension and other postretirement employee benefit costs expected to be recovered or refunded through future rates generally over the expected remaining service period of plan participants by certain of Dominion Energy's rate-regulated subsidiaries. Includes regulatory assets of $ 302 million and $ 25 million and regulatory liabilities of $ 6 million and $ 20 million in aggregate at December 31, 2022 and 2021, respectively, related to retained pension and other postretirement benefit plan assets and obligations for the East Ohio, PSNC and Questar Gas Transactions which will be reclassified to AOCI upon closing of each transaction. (9) Reflects interest rate hedges recoverable from or refundable to customers. Certain of these instruments are settled and any related payments are being amortized into interest expense over the life of the related debt, which has a weighted-average useful life of approximately 25 years and 24 years for Dominion Energy and Virginia Power, respectively, as of December 31, 2022. (10) Represents deferred depreciation and accretion expense related to legal obligations associated with the future retirement of generation, transmission and distribution properties. The AROs primarily relate to DESC’s electric generating facilities, including Summer, and are expected to be recovered over the related property lives and periods of decommissioning which may range up to approximately 105 years . (11) Rates charged to customers by Dominion Energy and Virginia Power's regulated businesses include a provision for the cost of future activities to remove assets that are expected to be incurred at the time of retirement. (12) Reflects amounts previously collected from retail electric customers of DESC for the NND Project to be credited over an estimated 11-year period effective February 2019, in connection with the SCANA Merger Approval Order. Also reflects amounts to be refunded to jurisdictional retail electric customers in Virginia associated with the settlement of the 2021 Triennial Review. See Note 13 for additional information. (13) Amounts recorded to pass the effect of reduced income taxes from the 2017 Tax Reform Act to customers in future periods, which will primarily reverse at the weighted average tax rate that was used to build the reserves over the remaining book life of the property, net of amounts to be recovered through future rates to pay income taxes that become payable when rate revenue is provided to recover AFUDC equity. (14) R eflects amounts to be refunded to DESC electric service customers over a 20-year period ending in 2039 associated with the monetization of a bankruptcy settlement agreement. (15) Primarily reflects a regulatory liability representing amounts collected from Virginia jurisdictional customers and placed in external trusts (including income, losses and changes in fair value thereon, as applicable) for the future decommissioning of Virginia Power's utility nuclear generation stations, in excess of the related AROs. (16) Reflects a regulatory liability for the collection of postretirement benefit costs allowed in rates in excess of expense incurred.

Regulatory Matters (Tables)

Regulatory Matters (Tables)	12 Months Ended
	Dec. 31, 2022
Public Utilities General Disclosures [Line Items]
Summary of Additional Significant Riders Associated with Virginia Power Projects	Significant riders associated with various Virginia Power projects are as follows: Rider Name Application Date Approval Date Rate Year Total Revenue Requirement (millions) Increase (Decrease) Over Previous Year (millions) Rider B June 2022 January 2023 April 2023 34 $ 18 Rider B June 2022 January 2023 April 2024 34 — Rider BW October 2021 May 2022 September 2022 145 32 Rider BW October 2021 May 2022 September 2023 120 ( 25 ) Rider CCR February 2022 October 2022 December 2022 231 15 Rider CE (1) September 2021 March 2022 May 2022 71 61 Rider CE (2) October 2022 Pending May 2023 89 18 Rider E January 2022 September 2022 November 2022 101 34 Rider E January 2023 Pending November 2023 109 8 Rider GT August 2021 May 2022 June 2022 56 N/A Rider GT August 2022 Pending June 2023 16 ( 40 ) Rider GV June 2021 December 2021 April 2023 127 ( 15 ) Rider OSW November 2021 August 2022 (3) September 2022 79 N/A Rider OSW November 2022 Pending September 2023 271 192 Rider PPA December 2022 Pending September 2023 ( 22 ) ( 17 ) Rider R June 2021 March 2022 April 2022 59 1 Rider R June 2021 March 2022 April 2023 55 ( 4 ) Rider RGGI (4) December 2021 Withdrawn Rider RGGI (5) December 2022 Pending September 2023 373 N/A Rider RPS December 2021 June 2022 September 2022 140 127 Rider RPS December 2022 Pending September 2023 111 ( 29 ) Rider S June 2021 February 2022 April 2023 191 ( 1 ) Rider SNA (6) October 2021 July 2022 September 2022 107 N/A Rider SNA (6) October 2022 Pending September 2023 50 ( 57 ) Rider T1 (7) May 2022 July 2022 September 2022 706 ( 168 ) Rider U (8) June 2021 March 2022 April 2022 95 15 Rider U (9) June 2022 Pending April 2023 74 ( 21 ) Rider US-2 October 2021 June 2022 September 2022 11 2 Rider US-3 August 2021 March 2022 June 2022 50 12 Rider US-3 August 2022 Pending June 2023 40 ( 10 ) Rider US-4 August 2021 March 2022 June 2022 15 5 Rider US-4 August 2022 Pending June 2023 17 2 Rider W June 2022 Pending April 2023 106 ( 15 ) Rider W June 2022 Pending April 2024 109 3 DSM Riders (10) December 2021 August 2022 September 2022 91 17 DSM Riders (11) December 2022 Pending September 2023 107 16 (1) Associated with solar generation and energy storage projects approved in March 2022, solar generation projects approved in April 2021 and certain small-scale solar projects. (2) Associated with solar generation and energy storage projects requested for approval in October 2022 and certain small-scale solar projects in addition to previously approved Rider CE projects. (3) In August 2022, Virginia Power filed a petition for limited reconsideration relating to a performance standard for operation of the CVOW Commercial Project included in the Virginia Commission’s August order. The Virginia Commission granted reconsideration and suspended in part the August order pending its reconsideration with Rider OSW approved on an interim basis. In December 2022, the Virginia Commission issued an order reinstating its August 2022 order granting approval of Rider OSW. (4) In January 2022, Virginia Power filed a motion to withdraw its application as a result of the announcement by the Governor of Virginia that he intends to withdraw Virginia from RGGI. The Virginia Commission granted Virginia Power’s motion in April 2022. In May 2022, Virginia Power filed a petition with the Virginia Commission requesting a suspension of Rider RGGI approved in August 2021. Virginia Power also requested that RGGI compliance costs incurred and unrecovered through July 2022 be recovered through existing base rates in effect during the period incurred. The Virginia Commission approved the request in June 2022. In the second quarter of 2022, Virginia Power recorded a charge of $ 180 million ($ 134 million after-tax) in impairment of assets and other charges (reflected in the Corporate and Other segment) for the amount deemed recovered through base rates through June 30, 2022, including the impact of certain non-jurisdictional customers which follow Virginia Power’s jurisdictional rate methodology. Virginia Power recorded $ 33 million ($ 25 million after-tax) in depreciation and amortization in the third quarter of 2022. (5) In December 2022, Virginia Power filed a petition to update and reinstate Rider RGGI to recover RGGI compliance costs incurred after July 2022 and those projected to occur through December 2023, with rate recovery from September 2023 through August 2024. For purposes of this proceeding, Virginia Power has assumed that Virginia will withdraw from RGGI on December 31, 2023, and accordingly did not project any RGGI compliance costs to be incurred after that date. (6) Virginia Power also requested approval of cost recovery of approximately $ 1.2 billion through Rider SNA for the first phase of nuclear life extension program which includes investments through 2024. In April 2022, Virginia Power, the Virginia Commission staff and certain interested parties filed a proposed stipulation recommending that costs incurred after February 2022 associated with the first phase of the nuclear life extension program for North Anna be deferred and requested for recovery in a subsequent Rider SNA filing. (7) Consists of $ 482 million for the transmission component of Virginia Power’s base rates and $ 224 million for Rider T1. (8) Consists of $ 60 million for previously approved phases and $ 35 million for phase six costs for Rider U. (9) As amended in June 2022, application consists of $ 74 million for previously approved phases of Rider U. (10) Associated with an additional nine new energy efficiency programs with a $ 140 million cost cap, with the ability to exceed the cost cap by no more than 15 %. (11) Associated with an additional four new energy efficiency programs, one new demand response program and four new program bundles with a $ 150 million cost cap, with the ability to exceed the cost cap by no more than 15 %.
Summary of Significant Virginia Power Electric Transmission Projects Applied	Electric Transmission Projects Significant Virginia Power electric transmission projects approved or applied for are as follows: Description and Location Application Approval Type of Miles of Cost Estimate Elmont-Ladysmith rebuild and related projects in the April 2021 April 2022 500 kV 26 $ 95 Rebuild transmission lines and related projects in the November 2021 August 2022 230 kV 21 45 Build new Dulles Towne Center substation and line December 2021 July 2022 230 kV 1 105 Build new Aviator substation and line loop in the February 2022 November 2022 230 kV 1 80 Nimbus line loop and substation and new 230 kV line February 2022 October 2022 230 kV 1 40 Partial rebuild of Bristers-Ox 115 kV line in Fauquier August 2022 Pending 115 kV 15 40 Construct new switching station, substations, October 2022 Pending 230 kV 18 230 Construct new switching station, substation, October 2022 Pending 230 kV 26 215 Construct new Mars and Wishing Star substations, October 2022 Pending 500/230 kV 4 720 Construct new Altair switching station, November 2022 Pending 230 kV 2 50 Construct new Cirrus and Keyser switching stations, November 2022 Pending 230 kV 5 65

Asset Retirement Obligations (T

Asset Retirement Obligations (Tables)	12 Months Ended
	Dec. 31, 2022
Asset Retirement Obligation Disclosure [Abstract]
Changes to Asset Retirement Obligations	The changes to AROs during 2021 and 2022 were as follows: (millions) Dominion Energy Virginia Power AROs at December 31, 2020 $ 5,221 $ 3,820 Obligations incurred during the period 28 26 Obligations settled during the period ( 155 ) ( 131 ) Revisions in estimated cash flows (1) 80 67 Accretion 208 141 Sale of non-wholly-owned nonregulated solar facilities ( 49 ) AROs at December 31, 2021 (2) $ 5,333 $ 3,923 Obligations incurred during the period 138 132 Obligations settled during the period ( 125 ) ( 155 ) Revisions in estimated cash flows (3) 46 48 Accretion 210 145 Sales of Kewaunee and Hope ( 175 ) AROs at December 31, 2022 (2) $ 5,427 $ 4,093 (1) Reflects revisions to future ash pond and landfill closure costs at certain utility generation facilities, and additionally for Dominion Energy estimated cash flow projections associated with the recovery of spent nuclear fuel costs for its AROs associated with the decommissioning of Kewaunee and estimated cash flow projections associated with DESC's gas distribution pipelines. For Dominion Energy, these revisions in 2021 resulted in a charge of $ 44 million ($ 35 million after-tax) within other operations and maintenance expense in the Consolidated Statements of Income as well as a $ 25 million decrease to property, plant and equipment, net. (2) Includes $ 196 million and $ 365 million reported in other current liabilities for Dominion Energy at December 31, 2021 and 2022, respectively. (3) Primarily reflects revisions to asbestos abatement costs associated with the early retirement of certain retired electric generation facilities.

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2022
Leases [Abstract]
Lease Assets and Liabilities Recorded in Consolidated Balance Sheets	At December 31, 2022 and 2021, the Companies had the following lease assets and liabilities recorded in the Consolidated Balance Sheets: Dominion Energy Virginia Power At December 31, 2022 2021 2022 2021 (millions) Lease assets: Operating lease assets (1) $ 415 $ 506 $ 294 $ 256 Finance lease assets (2) 144 144 82 71 Total lease assets $ 559 $ 650 $ 376 $ 327 Lease liabilities: Operating lease liabilities (3) $ 39 $ 44 $ 21 $ 25 Finance lease liabilities (4) 46 36 17 13 Total lease liabilities - current 85 80 38 38 Operating lease liabilities (5) 514 464 273 227 Finance lease liabilities (6) 104 112 65 57 Total lease liabilities - noncurrent 618 576 338 284 Total lease liabilities $ 703 $ 656 $ 376 $ 322 (1) Dominion Energy includes $ 394 million and $ 479 million at December 31, 2022 and 2021, respectively, in other deferred charges and other assets, with the remaining balance in noncurrent assets held for sale, in its Consolidated Balance Sheets. Virginia Power's balances are included in other deferred charges and other assets in its Consolidated Balance Sheets. (2) Dominion Energy includes $ 127 million and $ 129 million at December 31, 2022 and 2021, respectively, in property, plant and equipment in its Consolidated Balance Sheets, net of $ 106 million and $ 77 million at December 31, 2022 and 2021, respectively, of accumulated amortization, with the remaining balance in noncurrent assets held for sale. Virginia Power's balances are included in property, plant and equipment in its Consolidated Balance Sheets, net of $ 33 million and $ 18 million at December 31, 2022 and 2021, respectively, of accumulated amortization. (3) Dominion Energy includes $ 34 million and $ 38 million at December 31, 2022 and 2021, respectively, in other current liabilities, with the remaining balance in current liabilities held for sale, in its Consolidated Balance Sheets. Virginia Power's balances are in other current liabilities in its Consolidated Balance Sheets. (4) Dominion Energy includes $ 42 million and $ 33 million at December 31, 2022 and 2021, respectively, in securities due within one year, with the remaining balance in current liabilities held for sale, in its Consolidated Balance Sheets. Virginia Power's balances are included in securities due within one year in its Consolidated Balance Sheets. (5) Dominion Energy includes $ 494 million and $ 439 million at December 31, 2022 and 2021, respectively, in other deferred credits and other liabilities, with the remaining balance in noncurrent liabilities held for sale, in its Consolidated Balance Sheets. Virginia Power's balances are included in other deferred credits and other liabilities in its Consolidated Balance Sheets. (6) Dominion Energy includes $ 91 million and $ 100 million at December 31, 2022 and 2021, respectively, in other long-term debt, with the remaining balance in noncurrent liabilities held for sale, in its Consolidated Balance Sheets. Virginia Power's balances are included in other long-term debt in its Consolidated Balance Sheets.
Summary of Total Lease Cost	For the years ended December 31, 2022, 2021 and 2020, total lease cost associated with the Companies’ leasing arrangements consisted of the following: Dominion Energy Virginia Power Year ended December 31, 2022 2021 2020 2022 2021 2020 (millions) Finance lease cost: Amortization (1) $ 41 $ 40 $ 33 $ 15 $ 12 $ 7 Interest (2) 3 ( 3 ) — 3 1 1 Operating lease cost (3) 53 66 68 32 $ 30 $ 36 Short-term lease cost (4) 31 32 20 21 19 12 Variable lease cost 4 5 8 1 1 4 Total lease cost $ 132 $ 140 $ 129 $ 72 $ 63 $ 60 (1) Dominion Energy includes $ 3 million, $ 3 million and $ 2 million for the years ended December 31, 2022, 2021 and 2020, respectively, in discontinued operations in its Consolidated Statements of Income. (2) Dominion Energy includes $ 1 million for the year ended December 31, 2022 and less than $ 1 million for the years ended December 31, 2021 and 2020, respectively, in discontinued operations in its Consolidated Statements of Income. (3) Dominion Energy includes $ 6 million, $ 8 million and $ 8 million for the years ended December 31, 2022, 2021 and 2020, respectively, in discontinued operations in its Consolidated Statements of Income. (4) Dominion Energy includes $ 2 million, $ 2 million and $ 1 million for the years ended December 31, 2022, 2021 and 2020, respectively, in discontinued operations in its Consolidated Statements of Income.
Cash Paid for Amounts Included in Measurement of Lease Liabilities	For the years ended December 31, 2022, 2021 and 2020, cash paid for amounts included in the measurement of the lease liabilities consisted of the following amounts, included in the Companies’ Consolidated Statements of Cash Flows: Dominion Energy Virginia Power Year ended December 31, 2022 2021 2020 2022 2021 2020 (millions) Operating cash flows for $ 3 $ ( 3 ) $ — $ 3 $ 1 $ 1 Operating cash flows for 82 103 96 50 53 52 Financing cash flows for 32 40 33 12 12 7
Weighted Average Remaining Lease Term and Weighted Discounted Rate for Finance and Operating Leases	At December 31, 2022 and 2021, the weighted average remaining lease term and weighted discount rate for the Companies’ finance and operating leases were as follows: Dominion Energy Virginia Power December 31, 2022 2021 2022 2021 Weighted average remaining lease term - 4 years 5 years 6 years 6 years Weighted average remaining lease term - 29 years 27 years 30 years 25 years Weighted average discount rate - 5.77 % 2.77 % 6.12 % 2.27 % Weighted average discount rate - 3.91 % 3.96 % 3.90 % 4.00 %
Scheduled Maturities of Lease Liabilities	The Companies’ lease liabilities have the following maturities: Maturity of Lease Liabilities Dominion Energy Virginia Power (millions) Operating Finance Operating Finance 2023 $ 44 $ 52 $ 23 $ 21 2024 36 45 19 20 2025 30 25 15 17 2026 27 20 12 14 2027 25 14 10 11 After 2027 642 15 314 13 Total undiscounted lease payments 804 171 393 96 Present value adjustment ( 251 ) ( 21 ) ( 99 ) ( 14 ) Present value of lease liabilities $ 553 $ 150 $ 294 $ 82

Short Term Debt and Credit Ag_2

Short Term Debt and Credit Agreements (Tables)	12 Months Ended
	Dec. 31, 2022
Debt Instrument [Line Items]
Schedule of Line of Credit Facilities	Dominion Energy’s short-term financing is supported by its $ 6.0 billion joint revolving credit facility that provides for a discount in the pricing of certain annual fees and amounts borrowed by Dominion Energy under the facility if Dominion Energy achieves certain annual renewable electric generation and diversity and inclusion objectives. Commercial paper and letters of credit outstanding, as well as capacity available under the credit facility were as follows: Facility Limit Outstanding Commercial Paper (1) Outstanding Letters of Credit Facility Capacity Available (millions) At December 31, 2022 Joint revolving credit facility (2) $ 6,000 $ 3,076 $ 202 $ 2,722 At December 31, 2021 Joint revolving credit facility (2) $ 6,000 $ 1,883 $ 131 $ 3,986 (1) The weighted-average interest rates of the outstanding commercial paper supported by Dominion Energy’s credit facility was 4.73 % and 0.31 % at December 31, 2022 and 2021, respectively. (2) This credit facility matures in June 2026, with the potential to be extended by the borrowers to June 2028, and can be used by the borrowers under the credit facility to support bank borrowings and the issuance of commercial paper, as well as to support up to a combined $ 2.0 billion of letters of credit.
Virginia Electric and Power Company
Debt Instrument [Line Items]
Schedule of Line of Credit Facilities	Virginia Power’s share of commercial paper and letters of credit outstanding under the joint revolving credit facility with Dominion Energy, Questar Gas and DESC were as follows: Facility Limit Outstanding Commercial Paper (1) Outstanding Letters of Credit (millions) At December 31, 2022 Joint revolving credit facility (2) $ 6,000 $ 941 $ 140 At December 31, 2021 Joint revolving credit facility (2) $ 6,000 $ 745 $ 40 (1) The weighted-average interest rates of the outstanding commercial paper supported by the credit facility was 4.68 % and 0.26 % at December 31, 2022 and 2021, respectively. (2) The full amount of the facility is available to Virginia Power, less any amounts outstanding to co-borrowers Dominion Energy, Questar Gas and DESC. The sub-limit for Virginia Power is set pursuant to the terms of the facility but can be changed at the option of the borrowers multiple times per year. At December 31, 2022, the sub-limit for Virginia Power was $ 1.75 billion. If Virginia Power has liquidity needs in excess of its sub-limit, the sub-limit may be changed or such needs may be satisfied through short-term intercompany borrowings from Dominion Energy. This credit facility matures in June 2026, with the potential to be extended by the borrowers to June 2028. The credit facility can be used to support bank borrowings and the issuance of commercial paper, as well as to support up to $ 2.0 billion (or the sub-limit, whichever is less) of letters of credit.

Long-Term Debt (Tables)

Long-Term Debt (Tables)	12 Months Ended
	Dec. 31, 2022
Debt Disclosure [Abstract]
Long term Debt	2022 (1) Dominion Energy Virginia Power At December 31, 2022 2021 2022 2021 (millions, except percentages) Sustainability Revolving Credit Agreement, variable rate, due 2024 (2) 5.24 % $ 450 $ — Unsecured Senior Notes: Variable rate, due 2023 5.30 % 1,000 1,000 1.45 % to 7.0 %, due 2022 to 2052 (3)(4) 4.01 % 12,476 11,238 Unsecured Junior Subordinated Notes: 3.071 % due 2024 3.07 % 700 700 Payable to Affiliated Trust, 8.4 %, due 2031 8.40 % 10 10 Enhanced Junior Subordinated Notes: 5.75 % due 2054 5.75 % 685 685 Virginia Electric and Power Company: Unsecured Senior Notes, 2.30 % to 8.875 %, due 2022 to 2052 3.99 % 15,135 13,238 $ 15,135 $ 13,238 Tax-Exempt Financings, 0.75 % to 1.90 %, due 2032 to 2041 (5) 1.32 % 625 625 625 625 DECP Holdings, Term Loan, variable rate, due 2024 (6) 5.71 % 2,349 2,500 DESC: First Mortgage Bonds, 2.30 % to 6.625 %, due 2028 to 2065 5.09 % 3,634 3,634 Tax-Exempt Financings (7) : Variable rate due 2038 3.70 % 35 35 3.625 % and 4.00 %, due 2028 and 2033 3.90 % 54 54 GENCO, variable rate due 2038 3.70 % 33 33 Other 3.63 % 1 1 Secured Senior Notes, 4.82 %, due 2042 (8) 4.82 % 308 314 Tax-Exempt Financing, 3.8 % due 2033 3.80 % 27 27 Total Principal $ 37,522 $ 34,094 $ 15,760 $ 13,863 Fair value hedge valuation (9) — 2 Securities due within one year (10) ( 2,848 ) ( 805 ) ( 700 ) ( 300 ) Unamortized discount, premium and debt issuance costs, net ( 322 ) ( 282 ) ( 144 ) ( 110 ) Derivative restructuring (11) 141 738 — 446 Finance leases 91 100 65 57 Total long-term debt $ 34,584 $ 33,847 $ 14,981 $ 13,956 (1) Represents weighted-average coupon rates for debt outstanding as of December 31, 2022. (2) This $ 900 million supplemental credit facility, entered in June 2021, offers a reduced interest rate margin with respect to borrowed amounts allocated to certain environmental sustainability or social investment initiatives. Proceeds of the supplemental credit facility also may be used for general corporate purposes, but such proceeds are not eligible for a reduced interest rate margin. In June 2021 and August 2021, Dominion Energy borrowed $ 250 million and $ 650 million respectively. The proceeds from these borrowings were used to support environmental sustainability and social investment initiatives ($ 250 million) and for general corporate purposes ($ 650 million). In November 2021 and December 2021, Dominion Energy repaid $ 650 million and $ 250 million, respectively, borrowed under this arrangement. In May 2022, Dominion Energy borrowed $ 900 million. The proceeds from these borrowings were used to support environmental sustainability and social investment initiatives ($ 450 million) and for general corporate purposes ($ 450 million). In June 2022, Dominion Energy repaid $ 450 million borrowed for general corporate purposes. (3) Includes debt assumed by Dominion Energy from the merger of its former CNG subsidiary. (4) In 2022, Dominion Energy repurchased $ 263 million of senior notes with various interest rates and maturity dates. Gains related to the early redemption of the senior notes were $ 35 million ($ 26 million after-tax) reflected within interest and related charges in Dominion Energy’s Consolidated Statements of Income. (5) These financings relate to certain pollution control equipment at Virginia Power’s generating facilities. (6) The term loan amortizes over a 17-year period and matures in December 2024 with the potential to be extended to December 2026. The debt is secured by DECP Holdings’ noncontrolling interest in Cove Point. (7) Industrial revenue bonds totaling $ 68 million are secured by letters of credit that expire, subject to renewal, in the fourth quarter of 2023. (8) Represents debt associated with Eagle Solar. The debt is nonrecourse to Dominion Energy and is secured by Eagle Solar’s interest in certain solar facilities. (9) Represents the valuation of certain fair value hedges associated with Dominion Energy’s fixed rate debt. (10) Dominion Energy and Virginia Power's weighted-average rate for securities due within one year was 3.69 % and 2.75 %, respectively, as of December 31, 2022. (11) Excludes $ 447 million at December 31, 2022 for both Dominion Energy and Virginia Power, representing the current portion which is presented within securities due within one year in the Companies’ Consolidated Balance Sheets. The Companies did not have any current derivative restructuring balances at December 31, 2021.
Schedule Of Principal Payments Of Long Term Debt	Based on stated maturity dates rather than early redemption dates that could be elected by instrument holders, the scheduled principal payments of long-term debt, at December 31, 2022 were as follows: 2023 2024 2025 2026 2027 Thereafter Total (millions, except percentages) Dominion Energy Term Loans $ 134 $ 2,215 $ — $ — $ — $ — $ 2,349 Sustainability Revolving Credit — 450 — — — — 450 First Mortgage Bonds — — — — — 3,634 3,634 Unsecured Senior Notes 2,700 650 1,500 2,120 1,783 19,859 28,612 Secured Senior Notes 17 31 19 20 21 200 308 Tax-Exempt Financings — — — — — 774 774 Unsecured Junior Subordinated — — — — — 10 10 Unsecured Junior Subordinated — 700 — — — — 700 Enhanced Junior Subordinated — — — — — 685 685 Total $ 2,851 $ 4,046 $ 1,519 $ 2,140 $ 1,804 $ 25,162 $ 37,522 Weighted-average Coupon 3.69 % 4.81 % 3.01 % 2.84 % 3.74 % 4.34 % Virginia Power Unsecured Senior Notes $ 700 $ 350 $ 350 $ 1,150 $ 1,350 $ 11,235 $ 15,135 Tax-Exempt Financings — — — — — 625 625 Total $ 700 $ 350 $ 350 $ 1,150 $ 1,350 $ 11,860 $ 15,760 Weighted-average Coupon 2.75 % 3.45 % 3.10 % 3.08 % 3.61 % 4.10 %

Preferred Stock (Tables)

Preferred Stock (Tables)	12 Months Ended
	Dec. 31, 2022
Preferred Stock
Preferred Stock	Selected information about Dominion Energy’s 2019 Equity Units is presented below: Issuance Date Units Issued Total Net (1) Total Preferred (2) Cumulative Stock Purchase Stock Purchase (3) Stock Purchase (millions except interest rates) 6/14/2019 16 $ 1,582 $ 1,610 1.75 % 5.5 % $ 250 6/1/2022 (1) Issuance costs of $ 28 million were recorded as a reduction to preferred stock ($ 14 million) and common stock ($ 14 million). In connection with the reclassification of the Series A Preferred Stock to mezzanine equity in 2021, the issuance costs originally recognized as a reduction to preferred stock were reclassified to common stock. (2) Dominion Energy recorded dividends of $ 12 million ($ 7.292 per share), $ 28 million ($ 17.50 per share) and $ 28 million ($ 17.50 per share) for the years ended December 31, 2022, 2021 and 2020, respectively. In addition, Dominion Energy recorded interest expense of $ 7 million on the Series A Preferred Stock for the year ended December 31, 2022, following the reclassification of these shares to a mandatorily redeemable liability effective June 2022 as discussed above. Payments of $ 44 million, $ 85 million and $ 83 million were made in 2022, 2021 and 2020, respectively. The stock purchase contract liability was $ 44 million at December 31, 2021.

Equity (Tables)

Equity (Tables)	12 Months Ended
	Dec. 31, 2022
Schedule of Changes in AOCI Net of Tax and Reclassifications out of AOCI by Component	The following table presents Dominion Energy’s changes in AOCI (net of tax) and reclassifications out of AOCI by component: Commodity Interest Total (1) Investment (2) Pension and (3) Equity (4) Total (millions) Year Ended December 31, 2022 Beginning balance $ — $ ( 358 ) $ ( 358 ) $ 37 $ ( 1,133 ) $ ( 4 ) $ ( 1,458 ) Other — 67 67 ( 100 ) ( 218 ) 1 ( 250 ) Amounts reclassified from AOCI (gains) losses: Interest and — 57 57 — — — 57 Other income — — — 25 102 — 127 Total — 57 57 25 102 — 184 Income tax — ( 15 ) ( 15 ) ( 6 ) ( 27 ) — ( 48 ) Total, net of tax — 42 42 19 75 — 136 Net current — 109 109 ( 81 ) ( 143 ) 1 ( 114 ) Ending balance $ — $ ( 249 ) $ ( 249 ) $ ( 44 ) $ ( 1,276 ) $ ( 3 ) $ ( 1,572 ) Year Ended December 31, 2021 Beginning balance $ ( 1 ) $ ( 418 ) $ ( 419 ) $ 62 $ ( 1,359 ) $ ( 1 ) $ ( 1,717 ) Other — 15 15 ( 7 ) 144 ( 3 ) 149 Amounts reclassified from AOCI (gains) losses: Purchased gas 1 — 1 — — — 1 Interest and — 60 60 — — — 60 Other income — — — ( 23 ) 111 — 88 Total 1 60 61 ( 23 ) 111 — 149 Income tax — ( 15 ) ( 15 ) 5 ( 29 ) — ( 39 ) Total, net of tax 1 45 46 ( 18 ) 82 — 110 Net current 1 60 61 ( 25 ) 226 ( 3 ) 259 Ending balance $ — $ ( 358 ) $ ( 358 ) $ 37 $ ( 1,133 ) $ ( 4 ) $ ( 1,458 ) (1) Net of $ 83 million, $ 119 million and $ 141 million tax at December 31, 2022, 2021 and 2020, respectively. (2) Net of $ 13 million, $( 10 ) million and $( 21 ) million tax at December 31, 2022 and 2021 and 2020, respectively. (3) Net of $ 445 million, $ 396 million and $ 478 million tax at December 31, 2022 and 2021 and 2020, respectively. (4) Net of $ 1 million tax at both December 31, 2022 and 2021 and $— million tax at December 31, 2020.
Summary of Restricted Stock Activity	The following table provides a summary of restricted stock activity for the years ended December 31, 2022, 2021 and 2020: Shares (millions) Weighted - Average Grant Date Fair Value Nonvested at December 31, 2019 1.4 $ 74.77 Granted 0.5 81.74 Vested ( 0.4 ) 74.39 Cancelled and forfeited ( 0.1 ) 81.59 Nonvested at December 31, 2020 1.4 $ 77.41 Granted 0.5 71.78 Vested ( 0.5 ) 73.54 Cancelled and forfeited ( 0.1 ) 75.57 Nonvested at December 31, 2021 1.3 $ 76.65 Granted 0.6 75.08 Vested ( 0.4 ) 77.87 Cancelled and forfeited ( 0.1 ) 73.15 Nonvested at December 31, 2022 1.4 $ 75.56
Virginia Electric and Power Company
Schedule of Changes in AOCI Net of Tax and Reclassifications out of AOCI by Component	The following table presents Virginia Power’s changes in AOCI (net of tax) and reclassification out of AOCI by component: Interest Rate Total (1) Investment (2) Total (millions) Year Ended December 31, 2022 Beginning balance $ ( 45 ) $ ( 45 ) $ 4 $ ( 41 ) Other 60 60 ( 11 ) 49 Amounts reclassified from AOCI (gains) losses: Interest and related 2 2 — 2 Total 2 2 — 2 Income tax expense ( 1 ) ( 1 ) — ( 1 ) Total, net of tax 1 1 — 1 Net current period other 61 61 ( 11 ) 50 Ending balance $ 16 $ 16 $ ( 7 ) $ 9 Year Ended December 31, 2021 Beginning balance $ ( 60 ) $ ( 60 ) $ 8 $ ( 52 ) Other 13 13 ( 2 ) 11 Amounts reclassified from AOCI (gains) losses: Interest and related 3 3 — 3 Other income — — ( 3 ) ( 3 ) Total 3 3 ( 3 ) — Income tax expense ( 1 ) ( 1 ) 1 — Total, net of tax 2 2 ( 2 ) — Net current period other 15 15 ( 4 ) 11 Ending balance $ ( 45 ) $ ( 45 ) $ 4 $ ( 41 ) (1) Net of $( 5 ) million, $ 16 million and $ 21 million tax at December 31, 2022, 2021 and 2020, respectively. (2) Net of $ 2 million, $( 2 ) million and $( 3 ) million tax at December 31, 2022, 2021 and 2020, respectively.

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2022
Compensation And Retirement Disclosure [Abstract]
Pension Plan and Other Postretirement Benefit Plan Obligations and Plan Assets and Includes a Statement of the Plans Funded Status	The following table summarizes the changes in pension plan and other postretirement benefit plan obligations and plan assets and includes a statement of the plans’ funded status for Dominion Energy: Pension Benefits Other Postretirement Benefits Year Ended December 31, 2022 2021 2022 2021 (millions, except percentages) Changes in benefit obligation: Benefit obligation at beginning of year $ 10,890 $ 11,363 $ 1,537 $ 1,746 Service cost 142 170 22 25 Interest cost 333 317 45 46 Benefits paid ( 511 ) ( 488 ) ( 97 ) ( 105 ) Actuarial (gains) losses during the year ( 2,716 ) ( 413 ) ( 361 ) ( 161 ) Plan amendments — — — ( 14 ) Sale of Hope ( 64 ) — ( 19 ) — Settlements and curtailments (1) ( 8 ) ( 59 ) — — Benefit obligation at end of year $ 8,066 $ 10,890 $ 1,127 $ 1,537 Changes in fair value of plan assets: Fair value of plan assets at beginning of year $ 11,945 $ 10,979 $ 2,323 $ 2,100 Actual return (loss) on plan assets ( 2,556 ) 1,202 ( 416 ) 294 Employer contributions 9 284 — — Benefits paid ( 511 ) ( 488 ) ( 62 ) ( 71 ) Sale of Hope ( 188 ) — — — Settlements (2) ( 5 ) ( 32 ) — — Fair value of plan assets at end of year $ 8,694 $ 11,945 $ 1,845 $ 2,323 Funded status at end of year $ 628 $ 1,055 $ 718 $ 786 Amounts recognized in the Consolidated Balance Sheets Noncurrent pension and other postretirement benefit assets $ 580 $ 878 $ 899 $ 1,052 Noncurrent assets held for sale 295 368 11 12 Other current liabilities ( 12 ) ( 12 ) ( 13 ) ( 15 ) Noncurrent pension and other postretirement benefit liabilities ( 196 ) ( 127 ) ( 179 ) ( 263 ) Noncurrent liabilities held for sale ( 39 ) ( 52 ) — — Net amount recognized $ 628 $ 1,055 $ 718 $ 786 Significant assumptions used to determine benefit Discount rate 5.65 %- 5.75 % 3.06 %- 3.19 % 5.69 %- 5.70 % 3.04 %- 3.11 % Weighted average rate of increase for compensation 4.38 % 4.51 % n/a n/a Crediting interest rate for cash balance and similar plans 4.40 %- 4.50 % 1.81 %- 1.94 % n/a n/a (1) 2022 amounts include curtailment for Hope as well as settlements of nonqualified pension obligations. 2021 amounts include settlements of nonqualified pension obligations. (2) 2022 and 2021 amounts relate to settlements of nonqualified pension obligations.
Benefit Obligation in Excess of Plan Asset	The following table provides information on the benefit obligations and fair value of plan assets for plans with a benefit obligation in excess of plan assets for Dominion Energy: Pension Benefits Other Postretirement As of December 31, 2022 2021 2022 2021 (millions) Benefit obligation $ 7,655 $ 9,420 $ 197 $ 261 Fair value of plan assets 7,410 9,229 5 7
Accumulated Benefit Obligation in Excess of Plan Assets	The following table provides information on the ABO and fair value of plan assets for Dominion Energy’s pension plans with an ABO in excess of plan assets: As of December 31, 2022 2021 (millions) Accumulated benefit obligation $ 776 $ 127 Fair value of plan assets 623 53
Benefit Payments Expected Future Service	The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid for Dominion Energy’s plans: Estimated Future Benefit Payments Pension Benefits Other Postretirement (millions) 2023 $ 518 $ 99 2024 527 97 2025 542 96 2026 551 94 2027 560 93 2028-2032 2,925 433
Fair Values of Pension and Post Retirement Plan Assets by Asset Category	The fair values of Dominion Energy’s pension plan assets by asset category are as follows: At December 31, 2022 2021 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total (millions) Cash and cash equivalents $ 14 $ 11 $ — $ 25 $ 25 $ 5 $ — $ 30 Common and preferred stocks: U.S. (1) 1,653 170 — 1,823 2,592 244 — 2,836 International 1,034 5 — 1,039 1,773 19 — 1,792 Insurance contracts — 166 — 166 — 279 — 279 Corporate debt instruments 65 805 — 870 81 1,439 — 1,520 Government securities 46 1,377 — 1,423 39 914 — 953 Total recorded at fair value $ 2,812 $ 2,534 $ — $ 5,346 $ 4,510 $ 2,900 $ — $ 7,410 Assets recorded at NAV (2) : Common/collective trust funds 1,780 3,010 Alternative investments: Real estate funds 66 116 Private equity funds 1,284 1,233 Debt funds 192 162 Hedge funds 2 14 Total recorded at NAV $ 3,324 $ 4,535 Total investments (3) $ 8,670 $ 11,945 (1) Includes $ 170 million and $ 258 million of Dominion Energy preferred stock at December 31, 2022 and 2021, respectively. (2) These investments that are measured at fair value using the NAV per share (or its equivalent) as a practical expedient are not required to be categorized in the fair value hierarchy. (3) Excludes net assets related to pending sales of securities and advanced subscription of $ 177 million, net accrued income of $ 27 million, and includes net assets related to pending purchases of securities of $ 180 million at December 31, 2022. Excludes net assets related to pending sales of securities of $ 35 million, net accrued income of $ 27 million, and includes net assets related to pending purchases of securities of $ 62 million at December 31, 2021. The fair values of Dominion Energy’s other postretirement plan assets by asset category are as follows: At December 31, 2022 2021 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total (millions) Cash and cash equivalents $ 3 $ 1 $ — $ 4 $ 3 $ 1 $ — $ 4 Common and preferred stocks: U.S. (1) 685 10 — 695 898 14 — 912 International 181 — — 181 256 1 — 257 Insurance contracts — 10 — 10 — 16 — 16 Corporate debt instruments 4 38 — 42 5 61 — 66 Government securities 3 79 — 82 2 47 — 49 Total recorded at fair value $ 876 $ 138 $ — $ 1,014 $ 1,164 $ 140 $ — $ 1,304 Assets recorded at NAV (2) : Common/collective trust funds 649 840 Alternative investments: Real estate funds 11 13 Private equity funds 158 152 Debt funds 11 9 Hedge funds — 1 Total recorded at NAV $ 829 $ 1,015 Total investments (3) $ 1,843 $ 2,319 (1) Includes $ 10 million of Dominion Energy preferred stock at December 31, 2022. (2) These investments that are measured at fair value using the NAV per share (or its equivalent) as a practical expedient are not required to be categorized in the fair value hierarchy. (3) Excludes net assets related to pending sales of securities and advanced subscription of $ 10 million, net accrued income of $ 2 million, and includes net assets related to pending purchases of securities of $ 10 million at December 31, 2022. Excludes net assets related to pending sales of securities of $ 5 million, net accrued income of $ 2 million, and includes net assets related to pending purchases of securities of $ 3 million at December 31, 2021.
Net Periodic Benefit (Credit) Cost and Amounts Recognized in Other Comprehensive Income and Regulatory Assets and Liabilities	The components of the provision for net periodic benefit (credit) cost and amounts recognized in other comprehensive income and regulatory assets and liabilities for Dominion Energy plans are as follows: Pension Benefits Other Postretirement Benefits Year Ended December 31, 2022 2021 2020 2022 2021 2020 (millions, except percentages) Service cost $ 142 $ 170 $ 173 $ 22 $ 25 $ 28 Interest cost 333 317 351 45 46 58 Expected return on plan assets ( 886 ) ( 834 ) ( 777 ) ( 191 ) ( 173 ) ( 156 ) Amortization of prior service (credit) cost — — 1 ( 38 ) ( 42 ) ( 49 ) Amortization of net actuarial (gain) loss 159 193 206 ( 2 ) 4 6 Settlements, curtailments and special termination (1) — 10 14 ( 8 ) — ( 59 ) Net periodic benefit (credit) cost $ ( 252 ) $ ( 144 ) $ ( 32 ) $ ( 172 ) $ ( 140 ) $ ( 172 ) Changes in plan assets and benefit obligations Current year net actuarial (gain) loss $ 726 $ ( 782 ) $ 166 $ 246 $ ( 282 ) $ ( 110 ) Prior service (credit) cost — — — — ( 13 ) ( 6 ) Settlements and curtailments (1) ( 3 ) ( 36 ) ( 81 ) 10 — 59 Less amounts included in net periodic benefit Amortization of net actuarial gain (loss) ( 159 ) ( 193 ) ( 206 ) 2 ( 4 ) ( 6 ) Amortization of prior service credit (cost) — — ( 1 ) 38 42 49 Sale of Hope ( 47 ) — — — — — Total recognized in other comprehensive $ 517 $ ( 1,011 ) $ ( 122 ) $ 296 $ ( 257 ) $ ( 14 ) Significant assumptions used to determine Discount rate 3.06 %- 3.19 % 2.73 %- 3.29 % 2.77 %- 3.63 % 3.04 %- 5.03 % 2.69 %- 2.80 % 3.07 %- 3.52 % Expected long-term rate of return on plan assets 7.00 %- 8.35 % 7.00 %- 8.45 % 7.00 %- 8.60 % 8.35 % 8.45 % 8.50 % Weighted average rate of increase for 4.51 % 4.53 % 4.23 % n/a n/a n/a Crediting interest rate for cash balance and similar 1.81 %- 1.94 % 1.93 %- 2.15 % 2.31 - 2.83 % n/a n/a n/a Healthcare cost trend rate (2) 6.25 % 6.25 % 6.25 % Rate to which the cost trend rate is assumed to (2) 5.00 % 5.00 % 5.00 % Year that the rate reaches the ultimate trend rate (2) 2026 - 2027 2026 - 2027 2025 - 2026 (1) 2022 amounts relate primarily to Dominion Energy’s sale of Hope. 2021 amounts relate primarily to the Dominion Energy executive nonqualified pension plan. 2020 amounts primarily relate to the GT&S Transaction. (2) Assumptions used to determine net periodic cost for the following year.
Components of AOCI and Regulatory Assets and Liabilities that have Not been Recognized as Components of Periodic Benefit (Credit) Cost	The components of AOCI and regulatory assets and liabilities for Dominion Energy’s plans that have not been recognized as components of net periodic benefit (credit) cost are as follows: Pension Benefits Other At December 31, 2022 2021 2022 2021 (millions) Net actuarial loss $ 2,714 $ 2,198 $ 84 $ ( 166 ) Prior service (credit) cost 3 2 ( 157 ) ( 203 ) Total (1) $ 2,717 $ 2,200 $ ( 73 ) $ ( 369 ) (1) As of December 31, 2022, of the $ 2.7 billion and $( 73 ) million related to pension benefits and other postretirement benefits, $ 1.7 billion and $ 14 million, respectively, are included in AOCI, with the remainder included in regulatory assets and liabilities, except for $ 170 million presented in assets and liabilities held for sale. As of December 31, 2021, of the $ 2.2 billion and $( 369 ) million related to pension benefits and other postretirement benefits, $ 1.7 billion and $( 155 ) million, respectively, are included in AOCI, with the remainder included in regulatory assets and liabilities, except for $ 108 million presented in assets and liabilities held for sale.

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2022
Commitments And Contingencies Disclosure [Abstract]
Long-term Purchase Commitment	At December 31, 2022, Dominion Energy had the following long-term commitments that are noncancelable or are cancelable only under certain conditions, and that a third party has used to secure financing for the facility that will provide the contracted goods or services: 2023 2024 2025 2026 2027 Thereafter Total (millions) Purchased electric capacity (1) $ 71 $ 70 $ 70 $ 73 $ 73 $ 630 $ 987 (1) Commitments represent estimated amounts payable for energy under power purchase contracts with qualifying facilities which expire at various dates through 2046. Energy payments are generally based on fixed dollar amounts per month and totaled $ 61 million and $ 59 million for the years ended December 31, 2022 and 2021, respectively .
Schedule of Subsidiary Guarantees	At December 31, 2022, Dominion Energy had issued the following subsidiary guarantees : Maximum (millions) Commodity transactions (1) $ 2,567 Nuclear obligations (2) 243 Solar (3) 304 Other (4) 1,229 Total (5)(6) $ 4,343 (1) Guarantees related to commodity commitments of certain subsidiaries. These guarantees were provided to counterparties in order to facilitate physical and financial transaction related commodities and services. (2) Guarantees primarily related to certain DGI subsidiaries regarding all aspects of running a nuclear facility. (3) Includes guarantees to facilitate the development of solar projects. Includes $ 90 million of guarantees related to entities held for sale. (4) Guarantees related to other miscellaneous contractual obligations such as leases, environmental obligations, construction projects and insurance programs. Also includes guarantees entered into by Dominion Energy RNG Holdings, II, Inc. on behalf of a subsidiary to facilitate construction of renewable natural gas facilities. Due to the uncertainty of workers’ compensation claims, the parental guarantee has no stated limit. (5) Excludes Dominion Energy’s guarantee of an offshore wind installation vessel discussed in Note 15. (6) In July 2016, Dominion Energy signed an agreement with a lessor to construct and lease a new corporate office property in Richmond, Virginia. The lessor provided equity and obtained financing commitments from debt investors, totaling $ 365 million, which funded total project costs. The project became substantially complete in August 2019 at which point the facility was available for Dominion Energy’s use and the five-year lease term commenced. At the end of the initial lease term, Dominion Energy can (i) extend the term of the lease for an additional five years , subject to the approval of the participants, at current market terms, (ii) purchase the property for an amount equal to the project costs or, (iii) subject to certain terms and conditions, sell the property on behalf of the lessor to a third party using commercially reasonable efforts to obtain the highest cash purchase price for the property. If the project is sold and the proceeds from the sale are insufficient to repay the investors for the project costs, Dominion Energy may be required to make a payment to the lessor, up to 87 % of project costs, for the difference between the project costs and sale proceeds. At December 31, 2022, no amounts have been recorded related to this guarantee.

Related-Party Transactions (Tab

Related-Party Transactions (Tables)	12 Months Ended
	Dec. 31, 2022
Virginia Electric and Power Company
Schedule of Related Party Transactions	Presented below are Virginia Power’s significant transactions with DES and other affiliates: Year Ended December 31, 2022 2021 2020 (millions) Commodity purchases from affiliates $ 1,423 $ 742 $ 569 Services provided by affiliates (1) 519 494 455 Services provided to affiliates 18 18 18 (1) Includes capitalized expenditures of $ 177 million, $ 161 million and $ 141 million for the years ended December 31, 2022, 2021 and 2020, respectively.

Operating Segments (Tables)

Operating Segments (Tables)	12 Months Ended
	Dec. 31, 2022
Segment Reporting Information [Line Items]
Schedule of Primary Operating Segments	The Companies are organized primarily on the basis of products and services sold in the U.S. A description of the operations included in the Companies’ primary operating segments effective September 2023 is as follows: Primary Operating Segment Description of Operations Dominion Energy Virginia Power Dominion Energy Virginia Regulated electric distribution X X Regulated electric transmission X X Regulated electric generation fleet (1) X X Dominion Energy South Carolina Regulated electric distribution X Regulated electric transmission X Regulated electric generation fleet X Regulated gas distribution and storage X Contracted Energy (2) Nonregulated electric generation fleet (3) X (1) Includes Virginia Power’s non-jurisdictional solar generation operations. (2) Includes renewable natural gas operations. (3) Includes solar generation facility development operations.
Schedule of Segment Reporting Information, by Segment	The following table presents segment information pertaining to Dominion Energy’s operations: Year Ended December 31, Dominion Energy Virginia Dominion Energy South Carolina Contracted Energy Corporate Adjustments & Consolidated (millions) 2022 Total revenue from external customers $ 9,658 $ 3,323 $ 890 $ 74 $ — $ 13,945 Intersegment revenue ( 15 ) 7 18 846 ( 856 ) — Total operating revenue 9,643 3,330 908 920 ( 856 ) 13,945 Depreciation, depletion and 1,452 507 123 360 — 2,442 Equity in earnings of equity method — — 2 19 — 21 Interest income (expense) 17 6 75 61 ( 50 ) 109 Interest and related charges (benefit) 645 220 18 169 ( 50 ) 1,002 Income tax expense (benefit) 411 132 64 ( 755 ) — ( 148 ) Net income from discontinued — — — 972 — 972 Net income (loss) attributable to 2,007 505 173 ( 1,691 ) — 994 Investment in equity method (1) — — 103 192 — 295 Capital expenditures 5,187 708 683 1,180 — 7,758 Total assets (billions) 55.3 17.2 7.7 29.5 ( 5.5 ) 104.2 2021 Total revenue from external customers $ 7,990 $ 2,968 $ 1,018 $ ( 616 ) $ 60 $ 11,420 Intersegment revenue ( 14 ) 7 67 837 ( 897 ) — Total operating revenue 7,976 2,975 1,085 221 ( 837 ) 11,420 Depreciation, depletion and 1,296 486 162 159 — 2,103 Equity in earnings of equity method — ( 3 ) ( 2 ) 20 — 15 Interest income (expense) 11 10 81 12 ( 19 ) 95 Interest and related charges (benefit) 535 206 42 491 ( 19 ) 1,255 Income tax expense (benefit) 467 125 49 ( 402 ) — 239 Net income from discontinued — — — 1,357 — 1,357 Net income attributable to 1,914 437 232 705 — 3,288 Investment in equity method (1) — — 74 88 — 162 Capital expenditures 3,756 694 420 1,191 — 6,061 Total assets (billions) 50.0 16.4 10.2 26.5 ( 3.5 ) 99.6 2020 Total revenue from external customers $ 7,779 $ 2,782 $ 1,019 $ 322 $ 49 $ 11,951 Intersegment revenue ( 16 ) 5 52 869 ( 942 ) ( 32 ) Total operating revenue 7,763 2,787 1,071 1,191 ( 893 ) 11,919 Depreciation, depletion and 1,245 474 182 90 — 1,991 Equity in earnings of equity method — ( 1 ) ( 5 ) 5 — ( 1 ) Interest income (expense) 11 12 91 34 ( 47 ) 101 Interest and related charges (benefit) 524 219 75 568 ( 47 ) 1,339 Income tax expense (benefit) 500 107 ( 24 ) ( 642 ) — ( 59 ) Net loss from discontinued — — — ( 1,334 ) — ( 1,334 ) Net income (loss) attributable to 1,884 419 202 ( 2,906 ) — ( 401 ) Capital expenditures 3,372 700 730 1,529 — 6,331 (1) Excludes liability to Atlantic Coast Pipeline.
Virginia Electric and Power Company
Segment Reporting Information [Line Items]
Schedule of Segment Reporting Information, by Segment	The following table presents segment information pertaining to Virginia Power’s operations: Year Ended December 31, Dominion Energy Virginia Corporate and Other Consolidated (millions) 2022 Operating revenue $ 9,643 $ 11 $ 9,654 Depreciation and amortization 1,452 284 1,736 Interest income 17 — 17 Interest and related charges (benefit) 645 ( 3 ) 642 Income tax expense (benefit) 411 ( 220 ) 191 Net income (loss) 2,007 ( 792 ) 1,215 Capital expenditures 5,187 — 5,187 Total assets (billions) 53.2 — 53.2 2021 Operating revenue $ 7,976 $ ( 506 ) $ 7,470 Depreciation and amortization 1,296 68 1,364 Interest income 11 — 11 Interest and related charges (benefit) 535 ( 1 ) 534 Income tax expense (benefit) 467 ( 70 ) 397 Net income (loss) 1,914 ( 202 ) 1,712 Capital expenditures 3,756 — 3,756 Total assets (billions) 47.9 — 47.9 2020 Operating revenue $ 7,763 $ — $ 7,763 Depreciation and amortization 1,245 7 1,252 Interest income 11 — 11 Interest and related charges (benefit) 524 ( 8 ) 516 Income tax expense (benefit) 500 ( 271 ) 229 Net income (loss) 1,884 ( 863 ) 1,021 Capital expenditures 3,372 — 3,372

Quarterly Financial Data (Una_2

Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2022
Quarterly Financial Information Disclosure [Line Items]
Schedule of Quarterly Results of Operations	A summary of the Companies’ quarterly results of operations for the years ended December 31, 2022 and 2021 follows. Amounts reflect all adjustments necessary in the opinion of management for a fair statement of the results for the interim periods. Results for interim periods may fluctuate as a result of weather conditions, changes in rates and other factors. In addition, Dominion Energy’s results have been recast reflecting the presentation of operations included as discontinued operations. See Notes 3 and 9 for more information. Dominion Energy First Quarter Second Quarter Third Quarter Fourth Quarter (millions) 2022 Operating revenue $ 3,113 $ 3,059 $ 3,963 $ 3,810 Income (loss) from continuing operations 642 ( 461 ) 995 ( 409 ) Net income (loss) from continuing operations including 300 ( 665 ) 626 ( 239 ) Net income from discontinued operations including 411 212 152 197 Net income (loss) including noncontrolling interests 711 ( 453 ) 778 ( 42 ) Net income (loss) attributable to Dominion Energy 711 ( 453 ) 778 ( 42 ) Basic EPS: Net income (loss) from continuing operations 0.34 ( 0.84 ) 0.73 ( 0.31 ) Net income from discontinued operations 0.50 0.26 0.18 0.24 Net income (loss) attributable to Dominion Energy 0.84 ( 0.58 ) 0.91 ( 0.07 ) Diluted EPS: Net income (loss) from continuing operations 0.34 ( 0.84 ) 0.73 ( 0.31 ) Net income from discontinued operations 0.50 0.26 0.18 0.24 Net income (loss) attributable to Dominion Energy 0.84 ( 0.58 ) 0.91 ( 0.07 ) Dividends declared per preferred share (Series A) 4.375 2.917 — — Dividends declared per preferred share (Series B) 11.625 11.625 11.625 11.625 Dividends declared per preferred share (Series C) 10.875 10.875 10.875 10.875 Dividends declared per common share 0.6300 0.6300 0.6300 0.6300 2021 Operating revenue $ 2,943 $ 2,601 $ 2,815 $ 3,061 Income from continuing operations 589 259 766 697 Net income from continuing operations including 693 140 496 628 Net income from discontinued operations including 315 155 170 717 Net income including noncontrolling interests 1,008 295 666 1,345 Net income attributable to Dominion Energy 1,008 285 654 1,341 Basic EPS: Net income from continuing operations 0.84 0.14 0.58 0.75 Net income from discontinued operations 0.39 0.19 0.21 0.88 Net income attributable to Dominion Energy 1.23 0.33 0.79 1.63 Diluted EPS: Net income continuing operations 0.84 0.14 0.58 0.75 Net income from discontinued operations 0.39 0.19 0.21 0.88 Net income attributable to Dominion Energy 1.23 0.33 0.79 1.63 Dividends per share (Series A Preferred Stock) 4.375 4.375 4.375 4.375 Dividends per share (Series B Preferred Stock) 11.625 11.625 11.625 11.625 Dividends per share (Series C Preferred Stock) — — — 2.6583 Dividends declared per common share 0.6675 0.6675 0.6675 0.6675
Virginia Power
Quarterly Financial Information Disclosure [Line Items]
Schedule of Quarterly Results of Operations	First Quarter Second Quarter Third Quarter Fourth Quarter (millions) 2022 Operating revenue $ 2,167 $ 2,175 $ 2,875 $ 2,437 Income from operations 562 236 802 448 Net income 357 47 571 240 2021 Operating revenue $ 1,830 $ 1,741 $ 1,976 $ 1,923 Income (loss) from operations 548 571 777 601 Net income (loss) 374 414 556 368

Nature of Operations (Details)

Nature of Operations (Details)	12 Months Ended
	Dec. 31, 2022 Segment
Segment Reporting Information [Line Items]
Number of operating segments	3
Virginia Electric and Power Company
Segment Reporting Information [Line Items]
Number of operating segments	1
BHE | Cove Point
Segment Reporting Information [Line Items]
Percentage of equity interest sold to noncontrolling interest owners	50%

Significant Accounting Polici_4

Significant Accounting Policies (Narrative) (Detail)	1 Months Ended		3 Months Ended		12 Months Ended
	Jan. 31, 2022 USD ($) $ / shares	Mar. 31, 2020 USD ($)	Mar. 31, 2022 USD ($) $ / shares	Mar. 31, 2021 USD ($)	Dec. 31, 2022 USD ($) MWh	Dec. 31, 2021 USD ($) MWh $ / shares	Dec. 31, 2020 USD ($)
Significant Accounting Policies [Line Items]
Accrued unbilled revenue					$ 1,100,000,000	$ 779,000,000
Reversal of interest expense on uncertain tax positions effectively settled					21,000,000
Reversal of penalty expense on uncertain tax positions effectively settled					7,000,000
Margin deposit assets					480,000,000	678,000,000
Capitalized interest costs and Capitalized interest costs and AFUDC					84,000,000	96,000,000	$ 85,000,000
Impairment of assets and other charges					$ 2,062,000,000	$ 194,000,000	2,104,000,000
Finite Lived Intangible Asset Useful Life					35 years
Estimated proved developed or proved gas and oil reserves rate per unit | MWh					1.67	1.92
Cost saving incentive					$ 27,000,000	$ 0	0
Discontinued operations property, plant and equipment					28,000,000	21,000,000	18,000,000
Non-jurisdictional and Certain Nonutility Solar Generation Facilities
Significant Accounting Policies [Line Items]
Finite Lived Intangible Asset Useful Life	35 years
Current Assets Held for Sale
Significant Accounting Policies [Line Items]
Accrued unbilled revenue					$ 324,000,000	$ 232,000,000
Change in Depreciation Rates from New Depreciation Study
Significant Accounting Policies [Line Items]
Increase in EPS | $ / shares			$ 0.05			$ 0.03
Revision Of Estimated Useful Life | Non-jurisdictional and Certain Nonutility Solar Generation Facilities
Significant Accounting Policies [Line Items]
Increase (decrease) in depreciation expense	$ (16,000,000)
Increase (decrease) in depreciation expense, after tax	$ (12,000,000)
Increase in EPS | $ / shares	$ 0.02
Minimum
Significant Accounting Policies [Line Items]
Lease extend term					1 year
Maximum
Significant Accounting Policies [Line Items]
Lease extend term					70 years
Virginia Electric and Power Company
Significant Accounting Policies [Line Items]
Accrued unbilled revenue					$ 620,000,000	$ 398,000,000
Percentage of fuel currently subject to deferred fuel accounting					86%
Margin deposit assets					$ 310,000,000	167,000,000
Margin liabilities					0	0
Capitalized interest costs and Capitalized interest costs and AFUDC					66,000,000	78,000,000	60,000,000
AFUDC recorded as regulatory asset					34,000,000	35,000,000	11,000,000
Finite Lived Intangible Asset Useful Life	35 years
Virginia Electric and Power Company | Change in Depreciation Rates from New Depreciation Study
Significant Accounting Policies [Line Items]
Increase (decrease) in depreciation expense			$ 60,000,000				(31,000,000)
Increase (decrease) in depreciation expense, after tax			$ (45,000,000)				(23,000,000)
Virginia Electric and Power Company | Revision Of Estimated Useful Life
Significant Accounting Policies [Line Items]
Increase (decrease) in depreciation expense	$ (6,000,000)
Increase (decrease) in depreciation expense, after tax	$ (4,000,000)
Virginia Electric and Power Company | Electric Generation Facilities
Significant Accounting Policies [Line Items]
Charges recorded with dismantling					167,000,000		54,000,000
Charges recorded with dismantling after tax					124,000,000		40,000,000
Virginia Electric and Power Company | Impairment of Assets and Other Charges
Significant Accounting Policies [Line Items]
Impairment of assets and other charges		$ 751,000,000		$ 76,000,000			127,000,000
Asset impairment charges after tax		$ 559,000,000		$ 56,000,000			$ 94,000,000
Virginia Electric and Power Company | Affiliated Entity
Significant Accounting Policies [Line Items]
Income tax receivable						35,000,000
Income tax payable					22,000,000
Virginia Electric and Power Company | Affiliated Entity | Federal
Significant Accounting Policies [Line Items]
Income tax receivable						33,000,000
Income tax payable					25,000,000
Virginia Electric and Power Company | Affiliated Entity | State
Significant Accounting Policies [Line Items]
Income tax receivable					$ 3,000,000	2,000,000
DESC
Significant Accounting Policies [Line Items]
Percentage of fuel currently subject to deferred fuel accounting					96%
Dominion Energy Gas Holdings, LLC
Significant Accounting Policies [Line Items]
Inventory under LIFO method					$ 14,000,000	26,000,000
Amount exceeded on LIFO basis					$ 129,000,000	$ 74,000,000
Cove Point | Brookfield
Significant Accounting Policies [Line Items]
Percentage of equity interest sold to noncontrolling interest owners					25%
Four Brothers And Three Cedars | Dominion Energy Midstream Partners, LP | Terra Nova Renewable Partners | Nonregulated Solar Projects
Significant Accounting Policies [Line Items]
Percentage of equity interest sold to noncontrolling interest owners					33%

Significant Accounting Polici_5

Significant Accounting Policies (Checks the Outstanding Accounts Payable but not yet Presented for Payment and Recorded) (Detail) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Accounts Payable [Line Items]
Accounts payable for checks outstanding	$ 35	$ 54
Virginia Electric and Power Company
Accounts Payable [Line Items]
Accounts payable for checks outstanding	$ 21	$ 15

Significant Accounting Polici_6

Significant Accounting Policies (Reconciliation of Total Cash, Restricted Cash and Equivalents) (Detail) - USD ($) $ in Millions		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash Cash Equivalents And Restricted Cash [Line Items]
Cash and cash equivalents	[1]	$ 153	$ 283	$ 179	$ 166
Cash and cash equivalents		120	249
Restricted cash and equivalents	[2]	188	125	68	103
Cash, restricted cash and equivalents shown in the Consolidated Statements of Cash Flows		341	408	247	269
Virginia Electric and Power Company
Cash Cash Equivalents And Restricted Cash [Line Items]
Cash and cash equivalents		22	26	35	17
Restricted cash and equivalents	[3]	2			7
Cash, restricted cash and equivalents shown in the Consolidated Statements of Cash Flows		$ 24	$ 26	$ 35	$ 24
[1] At December 31, 2022, 2021, 2020 and 2019, Dominion Energy had $ 34 million, $ 34 million, $ 21 million and $ 47 million, respectively, of cash and cash equivalents included in current assets held for sale. At December 31, 2022, 2021, 2020 and 2019, Dominion Energy had $ 2 million, less than $ 1 million, $ 3 million and $ 12 million, respectively, of restricted cash and equivalents included in current assets held for sale with the remaining balances presented within other current assets in Dominion Energy's Consolidated Balance Sheets.. Restricted cash and equivalents balances are presented within other current assets in Virginia Power’s Consolidated Balance Sheets

Significant Accounting Polici_7

Significant Accounting Policies (Reconciliation of Total Cash, Restricted Cash and Equivalents) (Parenthetical) (Detail) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash Cash Equivalents And Restricted Cash [Line Items]
Cash and cash equivalents	$ 120	$ 249
Restricted cash	$ 2		$ 3	$ 12
Restricted Cash, Statement of Financial Position [Extensible Enumeration]	Assets Of Disposal Group Including Discontinued Operation Current		Assets Of Disposal Group Including Discontinued Operation Current	Assets Of Disposal Group Including Discontinued Operation Current
Maximum
Cash Cash Equivalents And Restricted Cash [Line Items]
Restricted cash		$ 1
Restricted Cash, Statement of Financial Position [Extensible Enumeration]		Assets Of Disposal Group Including Discontinued Operation Current
Current Assets Held for Sale
Cash Cash Equivalents And Restricted Cash [Line Items]
Cash and cash equivalents	$ 34	$ 34	$ 21	$ 47

Significant Accounting Polici_8

Significant Accounting Policies (Schedule of Supplemental Cash Flow Information) (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Schedule Of Supplemental Cash Flow Information [Line Items]
Interest and related charges, excluding capitalized amounts		$ 1,408	$ 1,340	$ 1,519
Income taxes		139	160	292
Significant noncash investing and financing activities:
Accrued capital expenditures	[1],[2]	979	637	485
Leases	[3]	144	96	173
Virginia Electric and Power Company
Schedule Of Supplemental Cash Flow Information [Line Items]
Interest and related charges, excluding capitalized amounts		599	501	491
Income taxes		(54)	109	452
Significant noncash investing and financing activities:
Accrued capital expenditures	[4]	665	363	262
Leases	[5]	$ 116	$ 79	$ 32
[1] See Note 9 for noncash investing activities related to the acquisition of a noncontrolling interest in Wrangler and Dominion Privatization. See Notes 18, 19, 20 and 23 for noncash financing activities related to the contribution of stock to Dominion Energy’s defined benefit pension plan, remarketing of Series A Preferred Stock, derivative restructuring and the issuance of common stock and transfer of property associated with the settlement of litigation. Includes $ 34 million of finance leases and $ 110 million of operating leases entered in 2022, $ 47 million of finance leases and $ 49 million of operating leases entered in 2021 and $ 46 million of finance leases and $ 127 million of operating leases entered in 2020. See Note 18 for non-cash financing activities related to derivative restructuring. Includes $ 26 million of finance leases and $ 90 million of operating leases entered in 2022, $ 37 million of finance leases and $ 42 million of operating leases entered in 2021 and $ 32 million of finance leases entered in 2020.

Significant Accounting Polici_9

Significant Accounting Policies (Schedule of Supplemental Cash Flow Information) (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Schedule Of Supplemental Cash Flow Information [Line Items]
Financing leases	$ 34	$ 47	$ 46
Operating leases	110	49	127
Virginia Electric and Power Company
Schedule Of Supplemental Cash Flow Information [Line Items]
Financing leases	26	37	$ 32
Operating leases	$ 90	$ 42

Significant Accounting Polic_10

Significant Accounting Policies (Depreciation Rates and Estimated Useful Life) (Detail)		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Nonregulated Generation-Nuclear
Public Utility, Property, Plant and Equipment [Line Items]
Estimated useful lives		44 years
Nonregulated Generation Solar | Minimum
Public Utility, Property, Plant and Equipment [Line Items]
Estimated useful lives		15 years
Nonregulated Generation Solar | Maximum
Public Utility, Property, Plant and Equipment [Line Items]
Estimated useful lives		35 years
General and Other | Minimum
Public Utility, Property, Plant and Equipment [Line Items]
Estimated useful lives		5 years
General and Other | Maximum
Public Utility, Property, Plant and Equipment [Line Items]
Estimated useful lives		59 years
Generation
Public Utility, Property, Plant and Equipment [Line Items]
Average composite depreciation rates on utility property, plant and equipment (percentage)	[1]	2.71%	2.63%	2.51%
Generation | Virginia Electric and Power Company
Public Utility, Property, Plant and Equipment [Line Items]
Average composite depreciation rates on utility property, plant and equipment (percentage)		2.84%	2.69%	2.52%
Transmission
Public Utility, Property, Plant and Equipment [Line Items]
Average composite depreciation rates on utility property, plant and equipment (percentage)	[1]	2.32%	2.52%	2.52%
Transmission | Virginia Electric and Power Company
Public Utility, Property, Plant and Equipment [Line Items]
Average composite depreciation rates on utility property, plant and equipment (percentage)		2.29%	2.51%	2.52%
Distribution
Public Utility, Property, Plant and Equipment [Line Items]
Average composite depreciation rates on utility property, plant and equipment (percentage)	[1]	2.80%	2.85%	2.75%
Distribution | Virginia Electric and Power Company
Public Utility, Property, Plant and Equipment [Line Items]
Average composite depreciation rates on utility property, plant and equipment (percentage)		2.76%	3.18%	3.19%
Storage
Public Utility, Property, Plant and Equipment [Line Items]
Average composite depreciation rates on utility property, plant and equipment (percentage)	[1]	2.69%	2.94%	2.93%
General and Other
Public Utility, Property, Plant and Equipment [Line Items]
Average composite depreciation rates on utility property, plant and equipment (percentage)	[1]	4.42%	4.48%	4.77%
General and Other | Virginia Electric and Power Company
Public Utility, Property, Plant and Equipment [Line Items]
Average composite depreciation rates on utility property, plant and equipment (percentage)		4.78%	5.08%	5.09%
[1] Excludes rates for depreciation reported as discontinued operations.

Acquisitions and Dispositions_2

Acquisitions and Dispositions (Business Review Dispositions) (Narrative) (Detail) - USD ($) $ in Millions		9 Months Ended	12 Months Ended
		Sep. 30, 2023	Dec. 31, 2022	Aug. 31, 2023
Business Acquisition And Dispositions [Line Items]
Goodwill write-off	[1]		$ 110
East Ohio | Enbridge
Business Acquisition And Dispositions [Line Items]
Disposal group, total value of consideration		$ 6,600
Disposal group, cash consideration		4,300
Disposal group, indebtedness		2,300
Termination fee		155
Disposal group, recognized a pre-tax gain		20
Disposal group, loss (gain) recorded after tax		(20)
Goodwill write-off		$ 1,500
Disposal group, transition services description		At the closing of the East Ohio Transaction, Dominion Energy and Enbridge will enter into a transition services agreement pursuant to which Dominion Energy will continue to provide certain services to support the ongoing operations of East Ohio for up to approximately two years. Enbridge has also agreed to provide certain services to Dominion Energy.
PSNC | Enbridge
Business Acquisition And Dispositions [Line Items]
Disposal group, total value of consideration		$ 3,100
Disposal group, cash consideration		2,200
Disposal group, indebtedness		1,000
Termination fee		78
Disposal group, recognized a pre-tax gain		130
Disposal group, loss (gain) recorded after tax		(290)
Goodwill write-off		$ 700
Disposal group, transition services description		At the closing of the PSNC Transaction, Dominion Energy and Enbridge will enter into a transition services agreement pursuant to which Dominion Energy will continue to provide certain services to support the ongoing operations of PSNC for up to approximately two years. Enbridge has also agreed to provide certain services to Dominion Energy.
Questar Gas and Wexpro | Enbridge
Business Acquisition And Dispositions [Line Items]
Disposal group, total value of consideration		$ 4,300
Disposal group, cash consideration		3,000
Disposal group, indebtedness		1,300
Termination fee		107
Disposal group, recognized a pre-tax loss		(10)
Disposal group, loss (gain) recorded after tax		(530)
Goodwill write-off		$ 1,000
Disposal group, transition services description		At the closing of the Questar Gas Transaction, Dominion Energy and Enbridge will enter into a transition services agreement pursuant to which Dominion Energy will continue to provide certain services to support the ongoing operations of Questar Gas and Wexpro for up to approximately two years. Enbridge has also agreed to provide certain services to Dominion Energy.
Other Sales | Tredegar Solar Fund I, LLC
Business Acquisition And Dispositions [Line Items]
Disposal group, cash consideration				$ 21
[1] See Note 3 for more information

Acquisitions and Dispositions_3

Acquisitions and Dispositions (Disposition of Gas Transmission & Storage Operations) (Narrative) (Detail) - USD ($)			1 Months Ended		12 Months Ended
		Nov. 30, 2020	Dec. 31, 2021	Jul. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Oct. 31, 2021	Oct. 31, 2020	Jul. 31, 2020
Business Acquisition And Dispositions [Line Items]
Income tax expense		$ 336,000,000	$ 173,000,000		$ (148,000,000)	$ 239,000,000	$ (59,000,000)
Goodwill write-off	[1]				$ 110,000,000
Disposal group, including discontinued operation, deposits				$ 1,300,000
Term Loan Credit Agreement
Business Acquisition And Dispositions [Line Items]
Credit facility, description					The agreement matured in December 2021 and bore interest at a variable rate.
Debt, maturity month and year				2021-12
GT&S Transaction
Business Acquisition And Dispositions [Line Items]
Derivative payment									$ 165,000,000
GT&S Transaction | BHE
Business Acquisition And Dispositions [Line Items]
Disposal group, total value of consideration										$ 10,000,000,000
Disposal group, cash consideration							222,000,000			$ 4,000,000,000
Cash proceeds received		2,700,000,000
Disposal group, recognized a pre-tax gain		127,000,000
Goodwill write-off		$ 1,400,000,000
GT&S Transaction | BHE | Transition Service Agreement
Business Acquisition And Dispositions [Line Items]
Operating revenue					$ 20,000,000	21,000,000	$ 4,000,000
Disposal group, administrative services description					Dominion Energy will continue to provide specified administrative services to support the operations of the disposed business for up to 24 months after closing, subsequently extended through June 2023 for certain services.
GT&S Transaction | BHE | Cove Point
Business Acquisition And Dispositions [Line Items]
Percentage ownership in total units		50%
Disposal group, initial fair value		$ 2,800,000,000
GT&S Transaction | BHE | General Partner Interest
Business Acquisition And Dispositions [Line Items]
Percentage ownership in total units										100%
GT&S Transaction | BHE | Limited Partner Interests
Business Acquisition And Dispositions [Line Items]
Percentage ownership in total units										25%
Q-Pipe Group | BHE
Business Acquisition And Dispositions [Line Items]
Disposal group, cash consideration									$ 1,300,000,000
Q-Pipe Group | Southwest Gas
Business Acquisition And Dispositions [Line Items]
Disposal group, total value of consideration								$ 2,000,000,000
Disposal group, cash consideration								$ 1,500,000,000
Cash proceeds received			1,500,000,000
Disposal group, recognized a pre-tax gain			666,000,000			$ 666,000,000
Gain (loss) on held for sale					$ 27,000,000
Gain (loss) on held for sale, after tax					$ 20,000,000
Goodwill write-off			$ 191,000,000
Disposal group, administrative services description					Dominion Energy will continue to provide specified administrative services to support the operations of the disposed businesses for up to 12 months after closing, subsequently extended through July 2023 for certain services. Dominion Energy recorded $6 million associated with the transition services agreement in operating revenue in the Consolidated Statements of Income for the year ended December 31, 2022.
Q-Pipe Transaction | BHE | Term Loan Credit Agreement
Business Acquisition And Dispositions [Line Items]
Credit facility, amount borrowed				$ 1,300,000,000
[1] See Note 3 for more information

Acquisitions and Dispositions_4

Acquisitions and Dispositions (Schedule of Results of Operations of Disposal Groups Reported As Discontinued Operations) (Detail) - USD ($) $ in Millions		3 Months Ended								12 Months Ended
		Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022		Dec. 31, 2021		Dec. 31, 2020
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Income tax expense (benefit)										$ 225		$ 374		$ (61)
Net income (loss) including noncontrolling interests		$ 197	$ 152	$ 212	$ 411	$ 717	$ 170	$ 155	$ 315	972	[1],[2]	1,357	[1],[2]	(1,334)	[1],[2]
Net income (loss) attributable to Dominion Energy										972		1,357		(1,440)
Disposition of GTS Operations | GT&S Transaction
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Operating revenue	[3]													1,710
Operating expense	[3],[4]													1,289
Other income (expense)	[3]													88
Interest and related charges (benefit)	[3],[5]													372
Income (loss) before income taxes	[3]													137
Income tax expense (benefit)												17		334	[3],[6]
Net income (loss) including noncontrolling interests	[3]													(197)
Noncontrolling interests	[3]													106
Net income (loss) attributable to Dominion Energy	[3],[7]													(303)
Disposition of GTS Operations | Q-Pipe Group
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Operating revenue												254	[8]	246
Operating expense												76	[8]	96	[4]
Other income (expense)												28	[8],[9]	1
Interest and related charges (benefit)												25	[8]	20	[5]
Income (loss) before income taxes												181	[8]	131
Income tax expense (benefit)												36	[8]	(9)	[6]
Net income (loss) including noncontrolling interests														140
Net income (loss) attributable to Dominion Energy												145	[8],[10]	140	[7]
Business Review Dispositions | East Ohio Transaction
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Operating revenue										1,043		908		771
Operating expense										702		620		540	[4]
Other income (expense)										28		25	[9]	20
Interest and related charges (benefit)										36		18		(32)	[5]
Income (loss) before income taxes										333		295		283
Income tax expense (benefit)										45		38		35	[6]
Net income (loss) including noncontrolling interests														248
Net income (loss) attributable to Dominion Energy										288	[11]	257	[10]	248	[7]
Business Review Dispositions | PSNC Transaction
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Operating revenue										841		613		539
Operating expense										648		451		376	[4]
Other income (expense)										9		11	[9]	12
Interest and related charges (benefit)										43		35		38	[5]
Income (loss) before income taxes										159		138		137
Income tax expense (benefit)										34		27		30	[6]
Net income (loss) including noncontrolling interests														107
Net income (loss) attributable to Dominion Energy										125	[11]	111	[10]	107	[7]
Business Review Dispositions | Questar Gas Transaction
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Operating revenue										1,341		1,020		938
Operating expense										1,043		761		676	[4]
Other income (expense)												(1)	[9]	(2)
Interest and related charges (benefit)										45		35		32	[5]
Income (loss) before income taxes										253		223		228
Income tax expense (benefit)										50		42		45	[6]
Net income (loss) including noncontrolling interests														183
Net income (loss) attributable to Dominion Energy										203	[11]	181	[10]	$ 183	[7]
Business Review Dispositions | Other
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Operating revenue										5		4
Operating expense										$ 5		5
Income (loss) before income taxes												(1)
Net income (loss) attributable to Dominion Energy	[10]											$ (1)
[1] Includes income tax expense (benefit) of $ 225 million, $ 374 million and $( 61 ) million for the years ended December 31, 2022, 2021 and 2020, respectively. See Note 9 for amounts attributable to related parties. Operations associated with the GT&S Transaction are through the November 1, 2020 close date. GT&S Transaction includes a charge of $ 482 million ($ 359 million after-tax) recorded in 2020 associated with the probable abandonment of a significant portion of the Supply Header Project as well as the establishment of a $ 75 million ARO as a result of the cancellation of the Atlantic Coast Pipeline Project. GT&S Transaction includes a loss of $ 237 million ($ 178 million after-tax) recorded in 2020 associated with cash flow hedges of debt-related items that were determined to be probable of not occurring. Excludes $ 17 million income tax benefit recorded in 2021 associated with the GT&S Transaction. Excludes $ 24 million of income tax expense (benefit) attributable to consolidated state and interim period tax allocation adjustments for the year ended December 31, 2020. Operations associated with the Q-Pipe Group are through the December 31, 2021 closing date. Q-Pipe Group includes a $ 25 million benefit associated with the termination of the Q-Pipe Transaction in 2021. Excludes $ 19 million of income tax expense (benefit) attributable to consolidated state and interim period tax allocation adjustments for the year ended December 31, 2021. Excludes $( 3 ) million of income tax expense (benefit) attributable to consolidated state and interim period tax allocation adjustments for the year ended December 31, 2022.

Acquisitions and Dispositions_5

Acquisitions and Dispositions (Schedule of Results of Operations of Disposal Groups Reported As Discontinued Operations) (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2022		Dec. 31, 2021		Dec. 31, 2020
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Impairment of assets and other charges				$ 2,062		$ 194		$ 2,104
Asset retirement obligations				5,427	[1]	5,333	[1]	5,221
Income tax expense (benefit) from discontinued operations				225		374		(61)
Disposition of GTS Operations | GT&S Transaction
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Loss associated with cash flow hedges of debt-related items		$ 237
Loss associated with cash flow hedges of debt-related items after tax		$ 178
Income tax expense (benefit) from discontinued operations						17		334	[2],[3]
Disposition of GTS Operations | Q-Pipe Transaction
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Benefit associated with the termination	$ 25
Income tax expense (benefit) from discontinued operations						36	[4]	(9)	[2]
Business Review Dispositions
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Income tax expense (benefit)				(3)		19		24
Business Review Dispositions | East Ohio Transaction
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Income tax expense (benefit) from discontinued operations				45		38		35	[2]
Business Review Dispositions | PSNC Transaction
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Income tax expense (benefit) from discontinued operations				34		27		30	[2]
Business Review Dispositions | Questar Gas Transaction
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Income tax expense (benefit) from discontinued operations				$ 50		$ 42		$ 45	[2]
Supply Header Project | Disposition of GTS Operations | GT&S Transaction
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Impairment of assets and other charges			$ 482
Asset impairment charges after tax			359
Atlantic Coast Pipeline Project | Disposition of GTS Operations | GT&S Transaction
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Asset retirement obligations			$ 75
[1] Includes $ 196 million and $ 365 million reported in other current liabilities for Dominion Energy at December 31, 2021 and 2022, respectively. Excludes $ 17 million income tax benefit recorded in 2021 associated with the GT&S Transaction. Operations associated with the GT&S Transaction are through the November 1, 2020 close date. Operations associated with the Q-Pipe Group are through the December 31, 2021 closing date.

Acquisitions and Dispositions -

Acquisitions and Dispositions - (Schedule of Major Classes of Assets and Liabilities of Disposal Groups Reported As Held for Sale) (Detail) - USD ($) $ in Millions		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Current assets		$ 1,776	$ 1,182
Property, plant and equipment, net		28	21	$ 18
Current liabilities		1,398	954
Business Review Dispositions | East Ohio Transaction
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Current assets	[1]	544	439
Property, plant and equipment, net		5,012	4,636
Other deferred charges and other assets, including goodwill and intangible assets	[2]	2,629	2,563
Current liabilities	[3]	634	557
Long-term debt	[4]	2,287	1,786
Other deferred credits and liabilities	[5]	1,435	1,408
Business Review Dispositions | PSNC Transaction
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Current assets	[1]	381	296
Property, plant and equipment, net		2,591	2,506
Other deferred charges and other assets, including goodwill and intangible assets	[2]	822	823
Current liabilities	[3]	151	133
Long-term debt	[4]	798	798
Other deferred credits and liabilities	[5]	689	673
Business Review Dispositions | Questar Gas Transaction
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Current assets	[1]	803	422
Property, plant and equipment, net		3,984	3,677
Other deferred charges and other assets, including goodwill and intangible assets	[2]	1,043	1,101
Current liabilities	[3]	612	263
Long-term debt	[4]	1,245	995
Other deferred credits and liabilities	[5]	1,087	1,039
Business Review Dispositions | Other
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Current assets	[1]	1	1
Property, plant and equipment, net		47	52
Current liabilities	[3]	1	1
Other deferred credits and liabilities	[5]	$ 9	$ 14
[1] Includes cash and cash equivalents of $ 6 million and $ 3 million within the East Ohio Transaction, less than $ 1 million and $ 14 million within the PSNC Transaction and $ 28 million and $ 17 million within the Questar Gas Transaction at December 31, 2022 and 2021, respectively. Also includes regulatory assets of $ 90 million and $ 56 million within the East Ohio Transaction, $ 95 million and $ 88 million within the PSNC Transaction and $ 273 million and $ 125 million within the Questar Gas Transaction at December 31, 2022 and 2021, respectively Includes goodwill of $ 1.5 billion, $ 673 million and $ 983 million at both December 31, 2022 and 2021 within the East Ohio, PSNC and Questar Gas Transactions, respectively. Also includes regulatory assets of $ 751 million and $ 607 million within the East Ohio Transaction, $ 93 million and $ 103 million within the PSNC Transaction and $( 22 ) million and $ 47 million within the Questar Gas Transaction at December 31, 2022 and 2021, respectively. Includes regulatory liabilities of $ 43 million and $ 51 million within the East Ohio Transaction, $ 11 million and $ 18 million within the PSNC Transaction and $ 144 million and $ 28 million within the Questar Gas Transaction at December 31, 2022 and 2021, respectively. Includes East Ohio Unsecured Senior Notes due 2025 to 2052 at rates from 1.30 % to 6.38 % and with a weighted-average coupon rate for debt outstanding at December 31, 2022 of 3.13 %; PSNC Unsecured Senior Notes due 2026 to 2051 at rates from 3.10 % to 7.45 % and with a weighted-average coupon rate for debt outstanding at December 31, 2022 of 4.34 % and Questar Gas Unsecured Senior Notes due 2024 to 2052 at rates from 2.21 % to 7.20 % and with a weighted-average coupon rate for debt outstanding at December 31, 2022 of 3.99 %. Includes regulatory liabilities of $ 749 million and $ 754 million within the East Ohio Transaction, $ 436 million and $ 435 million within the PSNC Transaction and $ 506 million and $ 500 million within the Questar Gas Transaction at December 31, 2022 and 2021, respectively.

Acquisitions and Dispositions_6

Acquisitions and Dispositions - (Schedule of Major Classes of Assets and Liabilities of Disposal Groups Reported As Held for Sale) (Parenthetical) (Detail) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Regulatory assets	$ 10,148	$ 9,109
Weighted-average coupon rate of outstanding debt	4.73%	0.31%
Business Review Dispositions | East Ohio Transaction
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Cash and cash equivalents	$ 6	$ 3
Goodwill	1,500	1,500
Regulatory assets (Current assets)	90	56
Regulatory assets (Other deferred charges and other assets, including goodwill and intangible assets)	751	607
Regulatory liabilities (Current liabilities)	43	51
Regulatory liabilities (Other deferred credits and liabilities)	$ 749	754
Business Review Dispositions | East Ohio Transaction | Unsecured Senior Notes due 2025 to 2052
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Weighted-average coupon rate of outstanding debt	3.13%
Business Review Dispositions | East Ohio Transaction | Maximum | Unsecured Senior Notes due 2025 to 2052
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Interest Rate	6.38%
Business Review Dispositions | East Ohio Transaction | Minimum | Unsecured Senior Notes due 2025 to 2052
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Interest Rate	1.30%
Business Review Dispositions | PSNC Transaction
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Cash and cash equivalents		14
Goodwill	$ 673	673
Regulatory assets (Current assets)	95	88
Regulatory assets (Other deferred charges and other assets, including goodwill and intangible assets)	93	103
Regulatory liabilities (Current liabilities)	11	18
Regulatory liabilities (Other deferred credits and liabilities)	$ 436	435
Business Review Dispositions | PSNC Transaction | Unsecured Senior Notes due 2026 to 2051
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Weighted-average coupon rate of outstanding debt	4.34%
Business Review Dispositions | PSNC Transaction | Maximum
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Cash and cash equivalents	$ 1
Business Review Dispositions | PSNC Transaction | Maximum | Unsecured Senior Notes due 2026 to 2051
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Interest Rate	7.45%
Business Review Dispositions | PSNC Transaction | Minimum | Unsecured Senior Notes due 2026 to 2051
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Interest Rate	3.10%
Business Review Dispositions | Questar Gas Transaction
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Cash and cash equivalents	$ 28	17
Goodwill	983	983
Regulatory assets (Current assets)	273	125
Regulatory assets (Other deferred charges and other assets, including goodwill and intangible assets)	(22)	47
Regulatory liabilities (Current liabilities)	144	28
Regulatory liabilities (Other deferred credits and liabilities)	$ 506	$ 500
Business Review Dispositions | Questar Gas Transaction | Unsecured Senior Notes due 2024 to 2052
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Weighted-average coupon rate of outstanding debt	3.99%
Business Review Dispositions | Questar Gas Transaction | Maximum | Unsecured Senior Notes due 2024 to 2052
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Interest Rate	7.20%
Business Review Dispositions | Questar Gas Transaction | Minimum | Unsecured Senior Notes due 2024 to 2052
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Interest Rate	2.21%

Acquisitions and Dispositions_7

Acquisitions and Dispositions (Schedule of Capital Expenditures and Significant Noncash Items Reported As Discontinued Operations) (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021		Dec. 31, 2020
Significant noncash items
Impairment of assets and other charges		$ 1,996	$ 182		$ 2,345
Depreciation, depletion and amortization		2,442	2,103		1,991
Accrued capital expenditures	[1],[2]	979	637		485
Disposition of GTS Operations | GT&S Transaction
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Capital expenditures	[3]				292
Significant noncash items
Impairment of assets and other charges	[3]				469
Depreciation, depletion and amortization	[3]				177
Disposition of GTS Operations | Q-Pipe Group
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Capital expenditures			34	[4],[5]	38
Significant noncash items
Depreciation, depletion and amortization					27
Accrued capital expenditures					1
Business Review Dispositions | East Ohio Transaction
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Capital expenditures		456	420	[4]	393
Significant noncash items
Depreciation, depletion and amortization		134	122		91
Accrued capital expenditures		53	27		19
Business Review Dispositions | PSNC Transaction
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Capital expenditures		153	195	[4]	259
Significant noncash items
Depreciation, depletion and amortization		87	81		73
Accrued capital expenditures		16	41		19
Business Review Dispositions | Questar Gas Transaction
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Capital expenditures		438	416	[4]	377
Significant noncash items
Depreciation, depletion and amortization		163	168		175
Accrued capital expenditures		31	25		21
Business Review Dispositions | Other
Significant noncash items
Depreciation, depletion and amortization		$ 4	$ 4		$ 4
[1] See Note 9 for noncash investing activities related to the acquisition of a noncontrolling interest in Wrangler and Dominion Privatization. See Notes 18, 19, 20 and 23 for noncash financing activities related to the contribution of stock to Dominion Energy’s defined benefit pension plan, remarketing of Series A Preferred Stock, derivative restructuring and the issuance of common stock and transfer of property associated with the settlement of litigation. Operations associated with the GT&S Transaction are through the November 1, 2020 closing date. In November 2021, Wexpro closed on an agreement with a natural gas gathering systems operator to purchase an existing natural gas gathering system in Wyoming including pipelines, compressors and dehydration equipment for total consideration of $ 41 million, included in the Questar Gas Transaction. Operations associated with the Q-Pipe Group are through the December 31, 2021 closing date.

Acquisitions and Dispositions_8

Acquisitions and Dispositions - (Schedule of Capital Expenditures and Significant Noncash Items Reported As Discontinued Operations) (Parenthetical) (Detail) $ in Millions	1 Months Ended
	Nov. 30, 2021 USD ($)
Questar Gas Transaction | Wexpro | Natural Gas Gathering Systems
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Payments to acquire existing natural gas gathering systems	$ 41

Acquisitions and Dispositions_9

Acquisitions and Dispositions (Sale of Hope) (Narrative) (Detail) - USD ($) $ in Millions			3 Months Ended	12 Months Ended
		Feb. 02, 2022	Jun. 30, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Business Acquisition And Dispositions [Line Items]
Goodwill write-off	[1]			$ 110
Deferred income tax expense				(113)	$ 410	$ 381
Ullico Inc
Business Acquisition And Dispositions [Line Items]
Percentage of equity interests expected to be sold		100%
Cash consideration from sale of equity interest		$ 690
Disposal group, recognized a pre-tax gain				14
Disposal group, recognized a gain on disposal after tax				84
Goodwill write-off				$ 110
Deferred income tax expense			$ 90
[1] See Note 3 for more information

Acquisitions and Disposition_10

Acquisitions and Dispositions (Sale of Kewaunee) (Narrative) (Detail) - Dominion Energy Kewaunee, Inc - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Jun. 30, 2022	Dec. 31, 2022	May 31, 2021
Business Acquisition And Dispositions [Line Items]
Percentage of equity interests expected to be sold			100%
Disposal group, loss (gain) recorded	$ 649
Disposal group, loss (gain) recorded after tax	$ 513
Withdrawal to recover nuclear fuel and other permitted costs		$ 80

Acquisitions and Disposition_11

Acquisitions and Dispositions (Acquisition of Birdseye) (Narrative) (Detail) - USD ($) $ in Millions		1 Months Ended
		May 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Business Acquisition And Dispositions [Line Items]
Goodwill	[1]		$ 4,143	$ 4,253	$ 4,229
Birdseye
Business Acquisition And Dispositions [Line Items]
Ownership interest acquired		100%
Business acquisition, total consideration		$ 46
Business acquisition, cash consideration		28
Business acquisition, fair value of consideration		18
Other deferred charges and other assets, including intangible assets		25
Goodwill		$ 24
[1] Goodwill amounts do not contain any accumulated impairment losses.

Operating Revenue (Schedule of

Operating Revenue (Schedule of Operating Revenue) (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		$ 14,559	$ 11,662	$ 11,551
Other revenues	[1],[2]	(614)	(242)	368
Total operating revenue		13,945	11,420	11,919
Regulated Electric Sales | Residential
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		5,261	4,509	4,833
Regulated Electric Sales | Commercial
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		4,480	3,194	3,102
Regulated Electric Sales | Industrial
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		901	748	730
Regulated Electric Sales | Government and Other Retail
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		1,235	921	868
Regulated Electric Sales | Wholesale
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		234	175	128
Nonregulated Electric Sales
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		1,249	1,005	822
Regulated Gas Sales | Residential
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		331	322	271
Regulated Gas Sales | Commercial
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		188	160	129
Regulated Gas Sales | Other
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		168	108	68
Regulated Gas Transportation and Storage
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		38	35	23
Other Regulated Revenues
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		296	248	303
Other Nonregulated Revenues
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers	[2],[3]	178	237	274
Virginia Electric and Power Company
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		9,868	7,470	7,661
Other revenues	[1],[2]	(214)		102
Total operating revenue		9,654	7,470	7,763
Virginia Electric and Power Company | Residential
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		4,039	3,366	3,677
Virginia Electric and Power Company | Commercial
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		3,647	2,417	2,342
Virginia Electric and Power Company | Industrial
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		472	367	380
Virginia Electric and Power Company | Government and Other Retail
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		1,172	862	804
Virginia Electric and Power Company | Regulated Electric Sales | Wholesale
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		132	107	90
Virginia Electric and Power Company | Nonregulated Electric Sales
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		68	44	19
Virginia Electric and Power Company | Other Regulated Revenues
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		277	234	299
Virginia Electric and Power Company | Other Nonregulated Revenues
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers	[2],[3]	$ 61	$ 73	$ 50
[1] Includes alternative revenue of $ 72 million, $ 44 million and $ 84 million at both Dominion Energy and Virginia Power for years ended December 31, 2022, 2021 and 2020, respectively. See Note 25 for amounts attributable to related parties and affiliates. Includes sales of renewable energy credits were $ 42 million, $ 33 million and $ 20 million for the years ended December 31, 2022, 2021 and 2020, respectively, at Dominion Energy and $ 18 million, $ 21 million and $ 11 million for the years ended December 31, 2022, 2021 and 2020, respectively, at Virginia Power.

Operating Revenue (Schedule o_2

Operating Revenue (Schedule of Operating Revenue) (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers	$ 14,559	$ 11,662	$ 11,551
Renewable Energy Investment Tax Credits
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers	42	33	20
Alternative Revenue Programs
Public Utilities General Disclosures [Line Items]
Other revenues	72	44	84
Virginia Electric and Power Company
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers	9,868	7,470	7,661
Virginia Electric and Power Company | Renewable Energy Investment Tax Credits
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers	18	21	11
Virginia Electric and Power Company | Alternative Revenue Programs
Public Utilities General Disclosures [Line Items]
Other revenues	$ 72	$ 44	$ 84

Operating Revenue (Narrative) (

Operating Revenue (Narrative) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Revenues From Contract With Customer [Line Items]
Revenue recognized from contract liability balances	$ 42	$ 50
Other Current Liabilities and Other Deferred Credits and Other Liabilities
Revenues From Contract With Customer [Line Items]
Contract liability balances	51	47
Virginia Electric and Power Company
Revenues From Contract With Customer [Line Items]
Revenue recognized from contract liability balances	33	36
Virginia Electric and Power Company | Other Current Liabilities and Other Deferred Credits and Other Liabilities
Revenues From Contract With Customer [Line Items]
Contract liability balances	$ 39	$ 33

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Detail) - USD ($)		1 Months Ended		12 Months Ended
	Nov. 30, 2020	Aug. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Taxes [Line Items]
Percentage of interest expense adjusted to taxable income				30%
State deferred income tax expense (benefit)				$ 44,000,000	$ (26,000,000)	$ 44,000,000
Income tax expense	$ 336,000,000		$ 173,000,000	(148,000,000)	239,000,000	(59,000,000)
Income tax expense (benefit) from discontinued operations				225,000,000	374,000,000	(61,000,000)
Income taxes reflect tax expense				257,000,000	218,000,000	175,000,000
Deferred income tax expenses benefit amortization				38,000,000	37,000,000	34,000,000
Deferred income tax expense (benefit)				(113,000,000)	410,000,000	381,000,000
Income tax benefit associated with remeasurement of state deferred taxes				(35,000,000)	(42,000,000)	(42,000,000)
Income tax expense attributable to noncontrolling interest						55,000,000
Unrecognized tax benefits			128,000,000	117,000,000	128,000,000	167,000,000	$ 175,000,000
Unrecognized tax benefits that would impact effective tax rate			72,000,000	64,000,000	72,000,000	140,000,000
Maximum
Income Taxes [Line Items]
Decrease in Unrecognized tax benefits due to settlement negotiations and expiration of statutes of limitations				39,000,000
Amount that earnings could potentially increase if changes were to occur				26,000,000
Virginia Electric and Power Company
Income Taxes [Line Items]
State deferred income tax expense (benefit)				112,000,000	118,000,000	7,000,000
Income tax expense				191,000,000	397,000,000	229,000,000
Income taxes reflect tax expense				1,406,000,000	2,109,000,000	1,250,000,000
Deferred income tax expense (benefit)				176,000,000	224,000,000	(246,000,000)
Income tax benefit associated with remeasurement of state deferred taxes				0	0	0
Unrecognized tax benefits			0	0	0	0
Hope Gas Inc [Member]
Income Taxes [Line Items]
Income tax expense				$ 34,000,000
Percentage of equity interests sold				100%
Discontinued Operations
Income Taxes [Line Items]
Increase (Decrease) in tax expense as a result of changes in unrecognized tax benefits						5,000,000
Unrecognized tax benefits that would impact effective tax rate			$ 33,000,000	$ 33,000,000	33,000,000
Continuing Operations
Income Taxes [Line Items]
Increase (Decrease) in tax expense as a result of changes in unrecognized tax benefits				$ (7,000,000)	(34,000,000)	(6,000,000)
Deferred income tax expense (benefit)					(21,000,000)
Continuing Operations | Virginia Electric and Power Company
Income Taxes [Line Items]
Deferred income tax expense (benefit)					(16,000,000)
Continuing Operations | SCANA
Income Taxes [Line Items]
Increase (Decrease) in tax expense as a result of changes in unrecognized tax benefits					(38,000,000)
Atlantic Coast Pipeline | Discontinued Operations | Supply Header Project
Income Taxes [Line Items]
Income tax charge						81,000,000
State
Income Taxes [Line Items]
Income tax benefit associated with remeasurement of state deferred taxes						45,000,000
IRA
Income Taxes [Line Items]
Percentage of alternate minimum tax on GAAP net income		15%
IRA | Minimum
Income Taxes [Line Items]
Tax credit expiration year		2032
Annual financial statement income for tax years		$ 1,000,000,000
GT&S Transaction
Income Taxes [Line Items]
State deferred income tax expense (benefit)						18,000,000
GT&S Transaction | Discontinued Operations
Income Taxes [Line Items]
Income tax benefit related to finalizing income tax returns					(14,000,000)
Income tax expense (benefit) on non-deductible goodwill written off						$ 236,000,000
Q-Pipe Group | Discontinued Operations
Income Taxes [Line Items]
Income tax expense (benefit) on non-deductible goodwill written off					$ 36,000,000

Income Taxes (Income Tax Expens

Income Taxes (Income Tax Expense for Continuing Operations Including Noncontrolling Interests) (Detail) - USD ($) $ in Millions		1 Months Ended	12 Months Ended
	Nov. 30, 2020	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Current:
Federal			$ (76)	$ (301)	$ (388)
State			27	13	(91)
Total current expense (benefit)			(49)	(288)	(479)
Deferred:
Taxes before operating loss carryforwards and investment tax credits			(63)	144	(16)
Tax utilization expense of operating loss carryforwards			35	42	42
Investment tax credits			(129)	250	311
State			44	(26)	44
Total deferred expense (benefit)			(113)	410	381
Investment tax credit-gross deferral			18	121	42
Investment tax credit-amortization			(4)	(4)	(3)
Total income tax expense (benefit)	$ 336	$ 173	(148)	239	(59)
Virginia Electric and Power Company
Current:
Federal			17	67	364
State			(17)	(13)	71
Total current expense (benefit)			0	54	435
Deferred:
Taxes before operating loss carryforwards and investment tax credits			212	145	(226)
Tax utilization expense of operating loss carryforwards			0	0	0
Investment tax credits			(148)	(39)	(27)
State			112	118	7
Total deferred expense (benefit)			176	224	(246)
Investment tax credit-gross deferral			18	121	42
Investment tax credit-amortization			(3)	(2)	(2)
Total income tax expense (benefit)			$ 191	$ 397	$ 229

Income Taxes (Reconciliation of

Income Taxes (Reconciliation of Income Taxes at the U.S. Statutory Federal Income Tax Rate) (Detail)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Effective Income Tax Computation [Line Items]
U.S. statutory rate	21%	21%	21%
Increases (reductions) resulting from:
Recognition of taxes - sale of subsidiary stock	(74.70%)	0%	0%
Recognition of taxes - privatization intercompany gain	0%	0%	0%
State taxes, net of federal benefit	(28.30%)	1.80%	(0.40%)
Investment tax credits	108.90%	(4.50%)	(18.60%)
Production tax credits	12%	(0.60%)	(1.30%)
Valuation allowances	0%	0.20%	1.70%
Reversal of excess deferred income taxes	67.30%	(2.80%)	(5.90%)
State legislative change	0.30%	(1.00%)	0%
Change in tax status	0%	0%	(3.30%)
AFUDC - equity	5%	(0.50%)	(0.10%)
Changes in state deferred taxes associated with assets held for sale	(4.10%)	0%	(6.30%)
Absence of tax on noncontrolling interest	0%	(0.20%)	7.40%
Settlements of uncertain tax positions	0%	(1.70%)	0%
Employee stock ownership plan deduction	6.80%	(0.40%)	(1.70%)
Other, net	5.70%	(0.40%)	(0.70%)
Effective tax rate	119.90%	10.90%	(8.20%)
Virginia Electric and Power Company
Effective Income Tax Computation [Line Items]
U.S. statutory rate	21%	21%	21%
Increases (reductions) resulting from:
Recognition of taxes - privatization intercompany gain	2.40%	0%	0%
State taxes, net of federal benefit	4.60%	4.60%	4.80%
Investment tax credits	(9.10%)	(3.00%)	(4.50%)
Production tax credits	(1.00%)	(0.60%)	(0.70%)
Valuation allowances	0%	0%	0%
Reversal of excess deferred income taxes	(3.80%)	(2.10%)	(2.20%)
State legislative change	0%	(0.70%)	0%
Change in tax status	0%	0%	0%
AFUDC - equity	(0.40%)	(0.50%)	0%
Settlements of uncertain tax positions	0%	0%	0%
Other, net	(0.10%)	0.10%	(0.10%)
Effective tax rate	13.60%	18.80%	18.30%

Income Taxes (Schedule of Defer

Income Taxes (Schedule of Deferred Income Taxes) (Detail) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Deferred income taxes:
Total deferred income tax assets	$ 2,633	$ 2,782
Total deferred income tax liabilities	7,730	7,961
Total net deferred income tax liabilities	5,097	5,179
Plant and equipment, primarily depreciation method and basis differences	4,257	4,773
Excess deferred income taxes	(847)	(884)
Unrecovered NND Project costs	479	508
DESC rate refund	(89)	(113)
Toshiba Settlement	(162)	(189)
Nuclear decommissioning	1,001	1,114
Deferred state income taxes	803	777
Federal benefit of deferred state income taxes	(164)	(163)
Deferred fuel, purchased energy and gas costs	509	154
Pension benefits	330	282
Other postretirement benefits	58	68
Loss and credit carryforwards	(1,782)	(1,566)
Valuation allowances	137	138
Partnership basis differences	466	390
Other	101	(109)
Total net deferred income tax liabilities	5,097	5,180
Deferred Investment Tax Credits – Regulated Operations	300	286
Total Deferred Taxes and Deferred Investment Tax Credits	5,397	5,466
Virginia Electric and Power Company
Deferred income taxes:
Total deferred income tax assets	1,535	1,373
Total deferred income tax liabilities	4,701	4,286
Plant and equipment, primarily depreciation method and basis differences	3,355	3,327
Excess deferred income taxes	(616)	(629)
Nuclear decommissioning	311	324
Deferred state income taxes	566	420
Federal benefit of deferred state income taxes	(119)	(88)
Deferred fuel, purchased energy and gas costs	403	126
Pension benefits	(105)	(119)
Other postretirement benefits	111	93
Loss and credit carryforwards	(751)	(537)
Valuation allowances	7	6
Other	4	(10)
Total net deferred income tax liabilities	3,166	2,913
Deferred Investment Tax Credits – Regulated Operations	286	270
Total Deferred Taxes and Deferred Investment Tax Credits	$ 3,452	$ 3,183

Income Taxes (Schedule of Deduc

Income Taxes (Schedule of Deductible Loss and Credit Carryforwards) (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($)
Deductible loss and credit carryforwards [Line Items]
Deductible amount	$ 6,443
Losses, Deferred tax asset	1,822
Losses, Valuation allowance	(137)
Virginia Electric and Power Company
Deductible loss and credit carryforwards [Line Items]
Deductible amount	513
Losses, Deferred tax asset	751
Losses, Valuation allowance	(7)
Federal
Deductible loss and credit carryforwards [Line Items]
Deductible amount	778
Losses, Deferred tax asset	$ 163
Losses, Expiration Period	2037
Federal | Investment Credits
Deductible loss and credit carryforwards [Line Items]
Tax credits, Deferred tax asset	$ 874
Federal | Investment Credits | Virginia Electric and Power Company
Deductible loss and credit carryforwards [Line Items]
Tax credits, Deferred tax asset	$ 631
Federal | Investment Credits | Earliest Tax Year
Deductible loss and credit carryforwards [Line Items]
Tax Credits, Expiration Period	2036
Federal | Investment Credits | Earliest Tax Year | Virginia Electric and Power Company
Deductible loss and credit carryforwards [Line Items]
Tax Credits, Expiration Period	2036
Federal | Investment Credits | Latest Tax Year
Deductible loss and credit carryforwards [Line Items]
Tax Credits, Expiration Period	2042
Federal | Investment Credits | Latest Tax Year | Virginia Electric and Power Company
Deductible loss and credit carryforwards [Line Items]
Tax Credits, Expiration Period	2042
Federal | Federal Production and Other Credits
Deductible loss and credit carryforwards [Line Items]
Tax credits, Deferred tax asset	$ 82
Federal | Federal Production and Other Credits | Virginia Electric and Power Company
Deductible loss and credit carryforwards [Line Items]
Tax credits, Deferred tax asset	$ 80
Federal | Federal Production and Other Credits | Earliest Tax Year
Deductible loss and credit carryforwards [Line Items]
Tax Credits, Expiration Period	2036
Federal | Federal Production and Other Credits | Earliest Tax Year | Virginia Electric and Power Company
Deductible loss and credit carryforwards [Line Items]
Tax Credits, Expiration Period	2036
Federal | Federal Production and Other Credits | Latest Tax Year
Deductible loss and credit carryforwards [Line Items]
Tax Credits, Expiration Period	2042
Federal | Federal Production and Other Credits | Latest Tax Year | Virginia Electric and Power Company
Deductible loss and credit carryforwards [Line Items]
Tax Credits, Expiration Period	2042
State
Deductible loss and credit carryforwards [Line Items]
Deductible amount	$ 5,665
Losses, Deferred tax asset	305
Losses, Valuation allowance	(51)
State minimum tax credits	271
State | Virginia Electric and Power Company
Deductible loss and credit carryforwards [Line Items]
Deductible amount	513
Losses, Deferred tax asset	$ 31
Losses, Expiration Period	2042
State | Earliest Tax Year
Deductible loss and credit carryforwards [Line Items]
Losses, Expiration Period	2023
State | Latest Tax Year
Deductible loss and credit carryforwards [Line Items]
Losses, Expiration Period	2042
State | Investment and Other Credits
Deductible loss and credit carryforwards [Line Items]
Losses, Valuation allowance	$ (86)
Tax credits, Deferred tax asset	127
State | Investment and Other Credits | Virginia Electric and Power Company
Deductible loss and credit carryforwards [Line Items]
Losses, Valuation allowance	(7)
Tax credits, Deferred tax asset	$ 9
Tax Credits, Expiration Period	2024
State | Investment and Other Credits | Earliest Tax Year
Deductible loss and credit carryforwards [Line Items]
Tax Credits, Expiration Period	2023
State | Investment and Other Credits | Latest Tax Year
Deductible loss and credit carryforwards [Line Items]
Tax Credits, Expiration Period	2032

Income Taxes (Unrecognized Tax

Income Taxes (Unrecognized Tax Benefits) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning balance	$ 128	$ 167	$ 175
Increases-prior period positions	8	48	18
Decreases-prior period positions	(8)	(59)	(19)
Increases-current period positions	2	2	1
Settlements with tax authorities	(3)	(26)
Expiration of statutes of limitations	(10)	(4)	(8)
Ending balance	$ 117	$ 128	$ 167

Income Taxes (Earliest Tax Year

Income Taxes (Earliest Tax Year) (Detail)	12 Months Ended
	Dec. 31, 2022
Pennsylvania
Operation In Major Geographical Areas Tax Year [Line Items]
Earliest Open Tax Year	2012
Connecticut
Operation In Major Geographical Areas Tax Year [Line Items]
Earliest Open Tax Year	2019
Virginia
Operation In Major Geographical Areas Tax Year [Line Items]
Earliest Open Tax Year	2019
Utah
Operation In Major Geographical Areas Tax Year [Line Items]
Earliest Open Tax Year	2019
South Carolina
Operation In Major Geographical Areas Tax Year [Line Items]
Earliest Open Tax Year	2019

Fair Value Measurements (Fair V

Fair Value Measurements (Fair Value, Option, Quantitative Disclosures) (Detail) $ in Millions		12 Months Ended
		Dec. 31, 2022 USD ($) $ / MWh $ / MMBTU		Dec. 31, 2021 USD ($)
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Assets		$ 2,176		$ 613
Fair Value of Derivative Liabilities		1,404		868
Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Assets		882		300
Fair Value of Derivative Liabilities		$ 456		470
Commodity | Natural Gas | Maximum | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Price volatility (percentage)	[1]	63%
Fair Value, Measurements, Recurring
Fair Value, Option, Quantitative Disclosures [Line Items]
Total assets		$ 7,782		8,161
Total liabilities		1,404		868
Fair Value, Measurements, Recurring | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Total assets		3,902		3,847
Total liabilities		456		470
Fair Value, Measurements, Recurring | Commodity
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Assets		769		282
Fair Value of Derivative Liabilities		926		469
Fair Value, Measurements, Recurring | Commodity | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Assets		268		146
Fair Value of Derivative Liabilities		348		133
Fair Value, Measurements, Recurring | Level 3
Fair Value, Option, Quantitative Disclosures [Line Items]
Total assets		437	[2]	230
Total liabilities		15	[2]	8
Fair Value, Measurements, Recurring | Level 3 | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Total assets		236	[2]	110
Total liabilities		15	[2]	8
Fair Value, Measurements, Recurring | Level 3 | Commodity
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Assets		437		230
Fair Value of Derivative Liabilities		15		8
Fair Value, Measurements, Recurring | Level 3 | Commodity | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Assets		236		110
Fair Value of Derivative Liabilities		15		$ 8
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow | Commodity | Natural Gas
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Liabilities	[2],[3]	10
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow | Commodity | Natural Gas | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Liabilities	[2],[3]	$ 10
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow | Commodity | Natural Gas | Minimum | Derivative Financial Instruments, Liabilities | Market Price
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[2],[3]	(2)
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow | Commodity | Natural Gas | Minimum | Derivative Financial Instruments, Liabilities | Market Price | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[2],[3]	(2)
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow | Commodity | Natural Gas | Maximum | Derivative Financial Instruments, Liabilities | Market Price
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[2],[3]	4
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow | Commodity | Natural Gas | Maximum | Derivative Financial Instruments, Liabilities | Market Price | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[2],[3]	4
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow | Commodity | Natural Gas | Weighted Average | Derivative Financial Instruments, Liabilities | Market Price
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[2],[3],[4]	(1)
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow | Commodity | Natural Gas | Weighted Average | Derivative Financial Instruments, Liabilities | Market Price | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[2],[3],[4]	(1)
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow | Commodity | FTRs
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Assets	[2]	$ 214
Fair Value of Derivative Liabilities	[2]	5
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow | Commodity | FTRs | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Assets	[2]	214
Fair Value of Derivative Liabilities	[2]	$ 5
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow | Commodity | FTRs | Minimum | Assets | Market Price
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[2]	2
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow | Commodity | FTRs | Minimum | Assets | Market Price | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[2]	2
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow | Commodity | FTRs | Minimum | Derivative Financial Instruments, Liabilities | Market Price
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[2]	2
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow | Commodity | FTRs | Minimum | Derivative Financial Instruments, Liabilities | Market Price | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[2]	2
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow | Commodity | FTRs | Maximum | Assets | Market Price
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[2]	24
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow | Commodity | FTRs | Maximum | Assets | Market Price | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[2]	24
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow | Commodity | FTRs | Maximum | Derivative Financial Instruments, Liabilities | Market Price
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[2]	12
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow | Commodity | FTRs | Maximum | Derivative Financial Instruments, Liabilities | Market Price | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[2]	12
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow | Commodity | FTRs | Weighted Average | Assets | Market Price
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[2],[4]	6
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow | Commodity | FTRs | Weighted Average | Assets | Market Price | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[2],[4]	6
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow | Commodity | FTRs | Weighted Average | Derivative Financial Instruments, Liabilities | Market Price
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[2],[4]	5
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow | Commodity | FTRs | Weighted Average | Derivative Financial Instruments, Liabilities | Market Price | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[2],[4]	5
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow | Commodity | Electricity
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Assets	[2]	$ 201
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow | Commodity | Electricity | Minimum | Assets | Market Price
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[2]	27
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow | Commodity | Electricity | Maximum | Assets | Market Price
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[2]	110
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow | Commodity | Electricity | Weighted Average | Assets | Market Price
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[2],[4]	51
Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity | Natural Gas
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Assets	[2],[3]	$ 22
Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity | Natural Gas | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Assets	[2],[3]	$ 22
Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity | Natural Gas | Minimum | Assets | Market Price
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[2],[3]	3
Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity | Natural Gas | Minimum | Assets | Market Price | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[2],[3]	3
Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity | Natural Gas | Minimum | Assets | Price Volatility
Fair Value, Option, Quantitative Disclosures [Line Items]
Price volatility (percentage)	[1]	11%
Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity | Natural Gas | Maximum | Assets | Market Price
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[2],[3]	16
Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity | Natural Gas | Maximum | Assets | Market Price | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[2],[3]	16
Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity | Natural Gas | Maximum | Assets | Price Volatility
Fair Value, Option, Quantitative Disclosures [Line Items]
Price volatility (percentage)	[1]	63%
Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity | Natural Gas | Weighted Average | Assets | Market Price
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[2],[3],[4]	10
Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity | Natural Gas | Weighted Average | Assets | Market Price | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[2],[3],[4]	10
Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity | Natural Gas | Weighted Average | Derivative Financial Instruments, Liabilities | Price Volatility
Fair Value, Option, Quantitative Disclosures [Line Items]
Price volatility (percentage)	[1],[4]	45%
Fair Value, Measurements, Recurring | Level 3 | Option Model | Physical Options | Natural Gas | Minimum | Derivative Financial Instruments, Liabilities | Price Volatility | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Price volatility (percentage)	[1]	11%
Fair Value, Measurements, Recurring | Level 3 | Option Model | Physical Options | Natural Gas | Weighted Average | Derivative Financial Instruments, Liabilities | Price Volatility | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Price volatility (percentage)	[1],[4]	45%
[1] Represents volatilities unrepresented in published markets. Represents market prices beyond defined terms for Levels 1 and 2. Includes basis. Averages weighted by volume.

Fair Value Measurements (Narrat

Fair Value Measurements (Narrative) (Detail) - USD ($)	1 Months Ended	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of assets and other charges			$ 2,062,000,000	$ 194,000,000	$ 2,104,000,000
Unrealized gains or losses included in earnings in Level 3 fair value category			0	0	0
Virginia Electric and Power Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unrealized gains or losses included in earnings in Level 3 fair value category			$ 0	0	0
Corporate Office Building | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-lived assets, estimated fair value				26,000,000
Nonregulated Retail Software Development | Level 2 | Maximum | Virginia Electric and Power Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-lived assets, estimated fair value				1,000,000
Impairment of Assets and Other Charges | Virginia Electric and Power Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of assets and other charges	$ 751,000,000	$ 76,000,000			127,000,000
Asset impairment charges after tax	$ 559,000,000	$ 56,000,000			$ 94,000,000
Impairment of Assets and Other Charges | Corporate Office Building
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of assets and other charges				16,000,000
Asset impairment charges after tax				12,000,000
Impairment of Assets and Other Charges | Nonregulated Retail Software Development | Virginia Electric and Power Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of assets and other charges				20,000,000
Asset impairment charges after tax				$ 15,000,000

Fair Value Measurements (Assets

Fair Value Measurements (Assets and Liabilities that are Measured at Fair Value on a Recurring Basis) (Detail) - USD ($) $ in Millions		Dec. 31, 2022		Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives Assets		$ 2,176		$ 613
Derivative Liabilities		1,404		868
Virginia Electric and Power Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives Assets		882		300
Derivative Liabilities		456		470
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets		7,782		8,161
Total liabilities		1,404		868
Fair Value, Measurements, Recurring | Virginia Electric and Power Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets		3,902		3,847
Total liabilities		456		470
Fair Value, Measurements, Recurring | Equity securities: | U.S.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	[1]	3,810		5,241
Fair Value, Measurements, Recurring | Equity securities: | U.S. | Virginia Electric and Power Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	[1]	2,028		2,420
Fair Value, Measurements, Recurring | Fixed Income | Corporate debt instruments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	[1]	576		881
Fair Value, Measurements, Recurring | Fixed Income | Corporate debt instruments | Virginia Electric and Power Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	[1]	360		531
Fair Value, Measurements, Recurring | Fixed Income | Government Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	[1]	1,220		1,455
Fair Value, Measurements, Recurring | Fixed Income | Government Securities | Virginia Electric and Power Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	[1]	632		599
Fair Value, Measurements, Recurring | Cash equivalents and other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents and other	[1]			(29)
Fair Value, Measurements, Recurring | Cash equivalents and other | Virginia Electric and Power Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents and other	[1]			(3)
Fair Value, Measurements, Recurring | Foreign Currency Exchange Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives Assets				8
Derivative Liabilities		101
Fair Value, Measurements, Recurring | Foreign Currency Exchange Rate | Virginia Electric and Power Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives Assets				8
Derivative Liabilities		101
Fair Value, Measurements, Recurring | Commodity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives Assets		769		282
Derivative Liabilities		926		469
Fair Value, Measurements, Recurring | Commodity | Virginia Electric and Power Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives Assets		268		146
Derivative Liabilities		348		133
Fair Value, Measurements, Recurring | Interest rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives Assets		1,407		323
Derivative Liabilities		377		399
Fair Value, Measurements, Recurring | Interest rate | Virginia Electric and Power Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives Assets		614		146
Derivative Liabilities		7		337
Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets		3,971		5,411
Fair Value, Measurements, Recurring | Level 1 | Virginia Electric and Power Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets		2,118		2,510
Fair Value, Measurements, Recurring | Level 1 | Equity securities: | U.S.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	[1]	3,810		5,241
Fair Value, Measurements, Recurring | Level 1 | Equity securities: | U.S. | Virginia Electric and Power Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	[1]	2,028		2,420
Fair Value, Measurements, Recurring | Level 1 | Fixed Income | Government Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	[1]	161		199
Fair Value, Measurements, Recurring | Level 1 | Fixed Income | Government Securities | Virginia Electric and Power Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	[1]	90		93
Fair Value, Measurements, Recurring | Level 1 | Cash equivalents and other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents and other	[1]			(29)
Fair Value, Measurements, Recurring | Level 1 | Cash equivalents and other | Virginia Electric and Power Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents and other	[1]			(3)
Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets		3,374		2,520
Total liabilities		1,389		860
Fair Value, Measurements, Recurring | Level 2 | Virginia Electric and Power Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets		1,548		1,227
Total liabilities		441		462
Fair Value, Measurements, Recurring | Level 2 | Fixed Income | Corporate debt instruments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	[1]	576		881
Fair Value, Measurements, Recurring | Level 2 | Fixed Income | Corporate debt instruments | Virginia Electric and Power Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	[1]	360		531
Fair Value, Measurements, Recurring | Level 2 | Fixed Income | Government Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	[1]	1,059		1,256
Fair Value, Measurements, Recurring | Level 2 | Fixed Income | Government Securities | Virginia Electric and Power Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	[1]	542		506
Fair Value, Measurements, Recurring | Level 2 | Foreign Currency Exchange Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives Assets				8
Derivative Liabilities		101
Fair Value, Measurements, Recurring | Level 2 | Foreign Currency Exchange Rate | Virginia Electric and Power Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives Assets				8
Derivative Liabilities		101
Fair Value, Measurements, Recurring | Level 2 | Commodity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives Assets		332		52
Derivative Liabilities		911		461
Fair Value, Measurements, Recurring | Level 2 | Commodity | Virginia Electric and Power Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives Assets		32		36
Derivative Liabilities		333		125
Fair Value, Measurements, Recurring | Level 2 | Interest rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives Assets		1,407		323
Derivative Liabilities		377		399
Fair Value, Measurements, Recurring | Level 2 | Interest rate | Virginia Electric and Power Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives Assets		614		146
Derivative Liabilities		7		337
Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets		437	[2]	230
Total liabilities		15	[2]	8
Fair Value, Measurements, Recurring | Level 3 | Virginia Electric and Power Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets		236	[2]	110
Total liabilities		15	[2]	8
Fair Value, Measurements, Recurring | Level 3 | Commodity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives Assets		437		230
Derivative Liabilities		15		8
Fair Value, Measurements, Recurring | Level 3 | Commodity | Virginia Electric and Power Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives Assets		236		110
Derivative Liabilities		$ 15		$ 8
[1] Includes investments held in the nuclear decommissioning trusts and rabbi trusts. Excludes $ 404 million and $ 366 million of assets at Dominion Energy, inclusive of $ 161 million and $ 185 million at Virginia Power, at December 31, 2022 and 2021, respectively, measured at fair value using NAV (or its equivalent) as a practical expedient which are not required to be categorized in the fair value hierarchy. Represents market prices beyond defined terms for Levels 1 and 2.

Fair Value Measurements (Asse_2

Fair Value Measurements (Assets and Liabilities that are Measured at Fair Value on a Recurring Basis) (Parenthetical) (Detail) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value using NAV	$ 404	$ 366
Virginia Electric and Power Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value using NAV	$ 161	$ 185

Fair Value Measurements (Net Ch

Fair Value Measurements (Net Change in the Assets and Liabilities Measured at Fair Value on a Recurring Basis and Included in the Level 3 Fair Value Category) (Detail) - Commodity - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Balance at January 1,	$ 222	$ 103	$ (37)
Total realized and unrealized gains (losses):
Included in earnings	$ 444	$ 10	$ (33)
Fair Value, Net Derivative Asset (Liability), Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Electric Fuel And Other Energy Related Purchases	Electric Fuel And Other Energy Related Purchases	Electric Fuel And Other Energy Related Purchases
Included in regulatory assets/liabilities	$ 183	$ 119	$ 140
Settlements	(455)	(10)	33
Purchases	28	0	0
Sales	0	0	(1)
Transfers out of Level 3	(2)	9	0
Balance at December 31,	422	222	103
Virginia Electric and Power Company
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Balance at January 1,	102	103	(37)
Total realized and unrealized gains (losses):
Included in earnings	$ 382	$ 4	$ (33)
Fair Value, Net Derivative Asset (Liability), Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Electric Fuel And Other Energy Related Purchases	Electric Fuel And Other Energy Related Purchases	Electric Fuel And Other Energy Related Purchases
Included in regulatory assets/liabilities	$ 102	$ (1)	$ 140
Settlements	(393)	(4)	33
Purchases	28	0	0
Sales	0	0	0
Transfers out of Level 3	0	0	0
Balance at December 31,	221	102	103
Operating Revenue
Total realized and unrealized gains (losses):
Included in earnings	2	(9)	0
Operating Revenue | Virginia Electric and Power Company
Total realized and unrealized gains (losses):
Included in earnings	0	0	0
Discontinued Operations
Total realized and unrealized gains (losses):
Included in earnings	0	0	1
Discontinued Operations | Virginia Electric and Power Company
Total realized and unrealized gains (losses):
Included in earnings	$ 0	$ 0	$ 0

Fair Value Measurements (Financ

Fair Value Measurements (Financial Instruments' Carrying Amounts and Fair Values) (Detail) - USD ($) $ in Millions		Dec. 31, 2022	Dec. 31, 2021
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	[1]	$ 39,680	$ 35,996
Supplemental 364-Day credit facility borrowings		450
Junior subordinated notes	[1]	1,387	1,386
Carrying Amount | Virginia Electric and Power Company
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	[1]	15,616	13,753
Estimate of Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	[1],[2]	36,426	40,947
Supplemental 364-Day credit facility borrowings	[2]	450
Junior subordinated notes	[1],[2]	1,340	1,470
Estimate of Fair Value | Virginia Electric and Power Company
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	[1],[2]	$ 14,067	$ 16,021
[1] Carrying amount includes current portions included in securities due within one year and amounts which represent the unamortized debt issuance costs and discount or premium. At December 31, 2021, the carrying amount of Dominion Energy’s long-term debt included the valuation of certain fair value hedges associated with fixed-rate debt of $ 2 million. There were no fair value hedges associated with fixed-rate debt at December 31, 2022. Additionally, Dominion Energy carrying amounts include portions classified as current liabilities held for sale and noncurrent liabilities held for sale at both December 31, 2022 and 2021. Fair value is estimated using market prices, where available, and interest rates currently available for issuance of debt with similar terms and remaining maturities. All fair value measurements are classified as Level 2. The carrying amount of debt issuances with short-term maturities and variable rates refinanced at current market rates is a reasonable estimate of their fair value.

Fair Value Measurements (Fina_2

Fair Value Measurements (Financial Instruments' Carrying Amounts and Fair Values) (Parenthetical) (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Valuation of certain fair value hedges associated with fixed rate debt	$ 0	$ 2,000,000
Supplemental line of credit facility borrowings expiration period	1 year

Derivatives and Hedge Account_3

Derivatives and Hedge Accounting Activities (Schedule of Offsetting Assets) (Detail) - USD ($) $ in Millions		Dec. 31, 2022	Dec. 31, 2021
Offsetting Assets [Line Items]
Gross Assets Presented in the Consolidated Balance Sheet	[1]	$ 1,975	$ 493
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		435	69
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Received		0	0
Net Amounts		1,540	424
Virginia Electric and Power Company
Offsetting Assets [Line Items]
Gross Assets Presented in the Consolidated Balance Sheet	[1]	852	271
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		45	35
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Received		0	0
Net Amounts		807	236
Commodity Contract | Over-the-counter
Offsetting Assets [Line Items]
Gross Assets Presented in the Consolidated Balance Sheet	[1]	408	153
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		28	13
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Received		0	0
Net Amounts		380	140
Commodity Contract | Over-the-counter | Virginia Electric and Power Company
Offsetting Assets [Line Items]
Gross Assets Presented in the Consolidated Balance Sheet	[1]	238	110
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		7	8
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Received		0	0
Net Amounts		231	102
Commodity Contract | Exchange
Offsetting Assets [Line Items]
Gross Assets Presented in the Consolidated Balance Sheet	[1]	160	9
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		159	7
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Received		0	0
Net Amounts		1	2
Commodity Contract | Exchange | Virginia Electric and Power Company
Offsetting Assets [Line Items]
Gross Assets Presented in the Consolidated Balance Sheet	[1]	0	7
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		0	7
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Received		0	0
Net Amounts		0	0
Interest Rate Contract | Over-the-counter
Offsetting Assets [Line Items]
Gross Assets Presented in the Consolidated Balance Sheet	[1]	1,407	323
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		248	49
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Received		0	0
Net Amounts		1,159	274
Interest Rate Contract | Over-the-counter | Virginia Electric and Power Company
Offsetting Assets [Line Items]
Gross Assets Presented in the Consolidated Balance Sheet	[1]	614	146
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		38	20
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Received		0	0
Net Amounts		$ 576	126
Foreign currency exchange rate | Over-the-counter
Offsetting Assets [Line Items]
Gross Assets Presented in the Consolidated Balance Sheet	[1]		8
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments			0
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Received			0
Net Amounts			8
Foreign currency exchange rate | Over-the-counter | Virginia Electric and Power Company
Offsetting Assets [Line Items]
Gross Assets Presented in the Consolidated Balance Sheet	[1]		8
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments			0
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Received			0
Net Amounts			$ 8
[1] Excludes derivative assets of $ 201 million and $ 120 million at Dominion Energy, and $ 30 million and $ 29 million at Virginia Power, at December 31, 2022 and 2021, respectively, which are not subject to master netting or similar arrangements.

Derivatives and Hedge Account_4

Derivatives and Hedge Accounting Activities (Schedule of Offsetting Assets) (Parenthetical) (Detail) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Offsetting Assets [Line Items]
Derivative assets, not subject to a master netting or similar arrangement	$ 201	$ 120
Virginia Electric and Power Company
Offsetting Assets [Line Items]
Derivative assets, not subject to a master netting or similar arrangement	$ 30	$ 29

Derivatives and Hedge Account_5

Derivatives and Hedge Accounting Activities (Schedule of Offsetting Liabilities) (Detail) - USD ($) $ in Millions		Dec. 31, 2022	Dec. 31, 2021
Offsetting Liabilities [Line Items]
Gross Liabilities Presented in the Consolidated Balance Sheet	[1]	$ 1,404	$ 868
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		435	69
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral		396	432
Net Amounts		573	367
Virginia Electric and Power Company
Offsetting Liabilities [Line Items]
Gross Liabilities Presented in the Consolidated Balance Sheet	[1]	430	464
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		45	35
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral		247	90
Net Amounts		138	339
Commodity Contract | Over-the-counter
Offsetting Liabilities [Line Items]
Gross Liabilities Presented in the Consolidated Balance Sheet	[1]	443	95
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		34	13
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral		71	54
Net Amounts		338	28
Commodity Contract | Over-the-counter | Virginia Electric and Power Company
Offsetting Liabilities [Line Items]
Gross Liabilities Presented in the Consolidated Balance Sheet	[1]	146	84
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		13	8
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral		71	54
Net Amounts		62	22
Commodity Contract | Exchange
Offsetting Liabilities [Line Items]
Gross Liabilities Presented in the Consolidated Balance Sheet	[1]	483	374
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		159	7
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral		324	367
Net Amounts		0	0
Commodity Contract | Exchange | Virginia Electric and Power Company
Offsetting Liabilities [Line Items]
Gross Liabilities Presented in the Consolidated Balance Sheet	[1]	176	43
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		0	7
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral		176	36
Net Amounts		0	0
Interest Rate Contract | Over-the-counter
Offsetting Liabilities [Line Items]
Gross Liabilities Presented in the Consolidated Balance Sheet	[1]	377	399
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		210	49
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral		1	11
Net Amounts		166	339
Interest Rate Contract | Over-the-counter | Virginia Electric and Power Company
Offsetting Liabilities [Line Items]
Gross Liabilities Presented in the Consolidated Balance Sheet	[1]	7	337
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		0	20
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral		0	0
Net Amounts		7	$ 317
Foreign currency exchange rate | Over-the-counter
Offsetting Liabilities [Line Items]
Gross Liabilities Presented in the Consolidated Balance Sheet	[1]	101
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		32
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral		0
Net Amounts		69
Foreign currency exchange rate | Over-the-counter | Virginia Electric and Power Company
Offsetting Liabilities [Line Items]
Gross Liabilities Presented in the Consolidated Balance Sheet	[1]	101
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		32
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral		0
Net Amounts		$ 69
[1] Excludes derivative liabilities of $ 26 million and $ 6 million at Virginia Power at December 31, 2022 and 2021, respectively, which are not subject to master netting or similar arrangements. Dominion Energy did no t have any derivative liabilities at December 31, 2022 or 2021 which were not subject to master netting or similar arrangements.

Derivatives and Hedge Account_6

Derivatives and Hedge Accounting Activities (Schedule of Offsetting Liabilities) (Parenthetical) (Detail) - USD ($)	Dec. 31, 2022	Dec. 31, 2021
Offsetting Liabilities [Line Items]
Derivative liabilities, not subject to a master netting or similar arrangement	$ 0	$ 0
Virginia Electric and Power Company
Offsetting Liabilities [Line Items]
Derivative liabilities, not subject to a master netting or similar arrangement	$ 26,000,000	$ 6,000,000

Derivatives and Hedge Account_7

Derivatives and Hedge Accounting Activities (Volume of Derivative Activity) (Detail) - 12 months ended Dec. 31, 2022 € in Millions, kr in Millions, $ in Millions		USD ($) MWh Bcf	DKK (kr)	[2]	EUR (€)
Fixed Price - Natural Gas - Current Derivative Contract
Derivative [Line Items]
Volume of derivative activity | Bcf		50
Fixed Price - Natural Gas - Current Derivative Contract | Virginia Electric and Power Company
Derivative [Line Items]
Volume of derivative activity | Bcf		41
Basis - Natural Gas - Current Derivative Contract
Derivative [Line Items]
Volume of derivative activity | Bcf	[1]	154
Basis - Natural Gas - Current Derivative Contract | Virginia Electric and Power Company
Derivative [Line Items]
Volume of derivative activity | Bcf	[1]	140
Fixed Price - Electricity - Current Derivative Contract
Derivative [Line Items]
Volume of electricity | MWh		16
Fixed Price - Electricity - Current Derivative Contract | Virginia Electric and Power Company
Derivative [Line Items]
Volume of electricity | MWh		8
Financial Transmission Rights - Electricity- Current Derivative Contract
Derivative [Line Items]
Volume of electricity | MWh		45
Financial Transmission Rights - Electricity- Current Derivative Contract | Virginia Electric and Power Company
Derivative [Line Items]
Volume of electricity | MWh		45
Oil - Current Derivative Contract
Derivative [Line Items]
Derivative payment | $		$ 6
Oil - Current Derivative Contract | Virginia Electric and Power Company
Derivative [Line Items]
Derivative payment | $		6
Interest Rate - Current Derivative Contract
Derivative [Line Items]
Derivative payment | $	[2]	2,003
Interest Rate - Current Derivative Contract | Virginia Electric and Power Company
Derivative [Line Items]
Derivative payment | $	[2]	$ 1,600
Foreign Currency Exchange Rate - Current Derivative Contract
Derivative [Line Items]
Derivative payment			kr 394		€ 780
Foreign Currency Exchange Rate - Current Derivative Contract | Virginia Electric and Power Company
Derivative [Line Items]
Derivative payment			394		780
Fixed Price - Natural Gas - Non-current Derivative Contract
Derivative [Line Items]
Volume of derivative activity | Bcf		2
Fixed Price - Natural Gas - Non-current Derivative Contract | Virginia Electric and Power Company
Derivative [Line Items]
Volume of derivative activity | Bcf		2
Basis - Natural Gas - Non-current Derivative Contract
Derivative [Line Items]
Volume of derivative activity | Bcf	[1]	414
Basis - Natural Gas - Non-current Derivative Contract | Virginia Electric and Power Company
Derivative [Line Items]
Volume of derivative activity | Bcf	[1]	407
Fixed Price - Electricity - Non-current Derivative Contract
Derivative [Line Items]
Volume of electricity | MWh		35
Fixed Price - Electricity - Non-current Derivative Contract | Virginia Electric and Power Company
Derivative [Line Items]
Volume of electricity | MWh		9
Financial Transmission Rights - Electricity- Non-current Derivative Contract
Derivative [Line Items]
Volume of electricity | MWh		0
Financial Transmission Rights - Electricity- Non-current Derivative Contract | Virginia Electric and Power Company
Derivative [Line Items]
Volume of electricity | MWh		0
Oil - Non-current Derivative Contract
Derivative [Line Items]
Derivative payment | $		$ 0
Oil - Non-current Derivative Contract | Virginia Electric and Power Company
Derivative [Line Items]
Derivative payment | $		0
Interest Rate - Non-current Derivative Contract
Derivative [Line Items]
Derivative payment | $	[2]	10,707
Interest Rate - Non-current Derivative Contract | Virginia Electric and Power Company
Derivative [Line Items]
Derivative payment | $	[2]	$ 1,950
Foreign Currency Exchange Rate - Non-current Derivative Contract
Derivative [Line Items]
Derivative payment			4,167		2,131
Foreign Currency Exchange Rate - Non-current Derivative Contract | Virginia Electric and Power Company
Derivative [Line Items]
Derivative payment			kr 4,167		€ 2,131
[1] Includes options. Maturity is determined based on final settlement period.

Derivatives and Hedge Account_8

Derivatives and Hedge Accounting Activities (Selected Information Related to Losses on Cash Flow Hedges Included in AOCI) (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($)
Derivative Instruments Gain Loss [Line Items]
AOCI After-Tax	$ (249)
Amounts Expected to be Reclassified to Earnings During the Next 12 Months After-Tax	(33)
Virginia Electric and Power Company
Derivative Instruments Gain Loss [Line Items]
AOCI After-Tax	16
Amounts Expected to be Reclassified to Earnings During the Next 12 Months After-Tax	(1)
Interest Rate Contract
Derivative Instruments Gain Loss [Line Items]
AOCI After-Tax	(249)
Interest rate, Amounts Expected to be Reclassified to Earnings During the Next 12 Months After-Tax	$ (33)
Maximum Term	396 months
Interest Rate Contract | Virginia Electric and Power Company
Derivative Instruments Gain Loss [Line Items]
AOCI After-Tax	$ 16
Interest rate, Amounts Expected to be Reclassified to Earnings During the Next 12 Months After-Tax	$ (1)
Maximum Term	396 months

Derivatives and Hedge Account_9

Derivatives and Hedge Accounting Activities (Narrative) (Detail) - USD ($)	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative instruments designated in fair value hedges	$ 0	$ 0	$ 0
Virginia Power
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative instruments designated in fair value hedges	$ 0	$ 0

Derivatives and Hedge Accoun_10

Derivatives and Hedge Accounting Activities (Schedule of Amounts Recorded on Balance Sheet Related to Cumulative Basis Adjustments for Fair Value Hedges) (Detail) - Designated as Hedging Instrument - Fair Value Hedging - Long-term Debt - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Carrying Amount of the Hedged Assets (Liabilities)	$ 0	$ (352)
Cumulative Amount of Fair Value Hedging Adjustments Included in the Carrying Amount of the Hedged Assets (Liabilities)	$ 0	$ (2)

Derivatives and Hedge Accoun_11

Derivatives and Hedge Accounting Activities (Fair Value of Derivatives) (Detail) - USD ($) $ in Millions		Dec. 31, 2022		Dec. 31, 2021
Derivatives Fair Value [Line Items]
Derivative Asset, Current		$ 1,137	[1]	$ 122
Derivative asset, noncurrent	[3]	1,039	[2]	491
Total derivative assets		2,176		613
Derivative liabilities	[4]	778		359
Derivative Liability, Noncurrent	[5],[6]	626		509
Total derivative liabilities		1,404		868
Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Asset, Current	[7]	765	[1]	76
Derivative Asset, Noncurrent	[3]	117	[2]	224
Total derivative assets		882		300
Derivative liabilities	[4],[8]	298		134
Derivative Liability, Noncurrent	[5],[6]	158		336
Total derivative liabilities		456		470
Commodity Contract
Derivatives Fair Value [Line Items]
Derivative Asset, Current		532		103
Derivative asset, noncurrent		237		179
Derivative liabilities		700		304
Derivative Liability, Noncurrent		226		165
Commodity Contract | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Asset, Current		264		74
Derivative asset, noncurrent		4		72
Derivative liabilities		290		92
Derivative Liability, Noncurrent		58		41
Interest Rate Contract
Derivatives Fair Value [Line Items]
Derivative Asset, Current		605		18
Derivative asset, noncurrent		802		305
Derivative liabilities		70		55
Derivative Liability, Noncurrent		307		344
Interest Rate Contract | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Asset, Current		501		1
Derivative asset, noncurrent		113		145
Derivative liabilities		0		42
Derivative Liability, Noncurrent		7		295
Foreign currency exchange rate
Derivatives Fair Value [Line Items]
Derivative Asset, Current				1
Derivative asset, noncurrent				7
Derivative liabilities		8
Derivative Liability, Noncurrent		93
Foreign currency exchange rate | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Asset, Current				1
Derivative asset, noncurrent				7
Derivative liabilities		8
Derivative Liability, Noncurrent		93
Designated as Hedging Instrument
Derivatives Fair Value [Line Items]
Derivative Asset, Current		501	[1]	1
Derivative asset, noncurrent	[3]	113	[2]	145
Total derivative assets		614		146
Derivative liabilities	[4]	0		42
Derivative Liability, Noncurrent	[5],[6]	7		295
Total derivative liabilities		7		337
Designated as Hedging Instrument | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Asset, Current		501	[1]	1
Derivative Asset, Noncurrent	[3]	113	[2]	145
Total derivative assets		614		146
Derivative liabilities	[4]	0		42
Derivative Liability, Noncurrent	[5],[6]	7		295
Total derivative liabilities		7		337
Designated as Hedging Instrument | Commodity Contract
Derivatives Fair Value [Line Items]
Derivative Asset, Current		0		0
Derivative asset, noncurrent		0		0
Derivative liabilities		0		0
Derivative Liability, Noncurrent		0		0
Designated as Hedging Instrument | Commodity Contract | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Asset, Current		0		0
Derivative asset, noncurrent		0		0
Derivative liabilities		0		0
Derivative Liability, Noncurrent		0		0
Designated as Hedging Instrument | Interest Rate Contract
Derivatives Fair Value [Line Items]
Derivative Asset, Current		501		1
Derivative asset, noncurrent		113		145
Derivative liabilities		0		42
Derivative Liability, Noncurrent		7		295
Designated as Hedging Instrument | Interest Rate Contract | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Asset, Current		501		1
Derivative asset, noncurrent		113		145
Derivative liabilities		0		42
Derivative Liability, Noncurrent		7		295
Designated as Hedging Instrument | Foreign currency exchange rate
Derivatives Fair Value [Line Items]
Derivative Asset, Current				0
Derivative asset, noncurrent				0
Derivative liabilities		0
Derivative Liability, Noncurrent		0
Designated as Hedging Instrument | Foreign currency exchange rate | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Asset, Current				0
Derivative asset, noncurrent				0
Derivative liabilities		0
Derivative Liability, Noncurrent		0
Fair Value - Derivatives not under Hedge Accounting
Derivatives Fair Value [Line Items]
Derivative Asset, Current		636	[1]	121
Derivative asset, noncurrent	[3]	926	[2]	346
Total derivative assets		1,562		467
Derivative liabilities	[4]	778		317
Derivative Liability, Noncurrent	[5],[6]	619		214
Total derivative liabilities		1,397		531
Fair Value - Derivatives not under Hedge Accounting | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Asset, Current		264	[1]	75
Derivative Asset, Noncurrent	[3]	4	[2]	79
Total derivative assets		268		154
Derivative liabilities	[4]	298		92
Derivative Liability, Noncurrent	[5],[6]	151		41
Total derivative liabilities		449		133
Fair Value - Derivatives not under Hedge Accounting | Commodity Contract
Derivatives Fair Value [Line Items]
Derivative Asset, Current		532		103
Derivative asset, noncurrent		237		179
Derivative liabilities		700		304
Derivative Liability, Noncurrent		226		165
Fair Value - Derivatives not under Hedge Accounting | Commodity Contract | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Asset, Current		264		74
Derivative asset, noncurrent		4		72
Derivative liabilities		290		92
Derivative Liability, Noncurrent		58		41
Fair Value - Derivatives not under Hedge Accounting | Interest Rate Contract
Derivatives Fair Value [Line Items]
Derivative Asset, Current		104		17
Derivative asset, noncurrent		689		160
Derivative liabilities		70		13
Derivative Liability, Noncurrent		300		49
Fair Value - Derivatives not under Hedge Accounting | Interest Rate Contract | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Asset, Current		0		0
Derivative asset, noncurrent		0		0
Derivative liabilities		0		0
Derivative Liability, Noncurrent		0		0
Fair Value - Derivatives not under Hedge Accounting | Foreign currency exchange rate
Derivatives Fair Value [Line Items]
Derivative Asset, Current				1
Derivative asset, noncurrent				7
Derivative liabilities		8
Derivative Liability, Noncurrent		93
Fair Value - Derivatives not under Hedge Accounting | Foreign currency exchange rate | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Asset, Current				1
Derivative asset, noncurrent				$ 7
Derivative liabilities		8
Derivative Liability, Noncurrent		$ 93
[1] Includes $ 118 million and $ 6 million reported in current assets held for sale in Dominion Energy's Consolidated Balance Sheets at December 31, 2022 and 2021, respectively. Includes $ 1 million reported in noncurrent assets held for sale in Dominion Energy's Consolidated Balance Sheets at December 31, 2022. Virginia Power’s noncurrent derivative assets are presented in other deferred charges and other assets in its Consolidated Balance Sheets. Includes $ 6 million and $ 3 million reported in current liabilities held for sale in Dominion Energy's Consolidated Balance Sheets at December 31, 2022 and 2021, respectively. Includes $ 1 million reported in noncurrent liabilities held for sale in Dominion Energy's Consolidated Balance Sheets at both December 31, 2022 and 2021. Virginia Power’s noncurrent derivative liabilities are presented in other deferred credits and other liabilities in its Consolidated Balance Sheets. See Note 25 for amounts attributable to affiliates. See Note 25 for amounts attributable to affiliates.

Derivatives and Hedge Accoun_12

Derivatives and Hedge Accounting Activities - Fair Value of Derivatives (Parenthetical) (Detail) - USD ($) $ in Millions		Dec. 31, 2022		Dec. 31, 2021
Derivatives Fair Value [Line Items]
Derivative assets current		$ 1,137	[1]	$ 122
Derivative asset, noncurrent	[3]	1,039	[2]	491
Derivative liabilities current	[4]	778		359
Derivative liabilities noncurrent	[5],[6]	626		509
Current Assets Held for Sale
Derivatives Fair Value [Line Items]
Derivative assets current		$ 118		$ 6
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration]		Assets Of Disposal Group Including Discontinued Operation Current		Assets Of Disposal Group Including Discontinued Operation Current
Non-Current Assets Held for Sale
Derivatives Fair Value [Line Items]
Derivative asset, noncurrent		$ 1
Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration]		Disposal Group, Including Discontinued Operation, Assets, Noncurrent
Current Liabilities Held for Sale
Derivatives Fair Value [Line Items]
Derivative liabilities current		$ 6		$ 3
Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration]		Liabilities Of Disposal Group Including Discontinued Operation Current		Liabilities Of Disposal Group Including Discontinued Operation Current
Noncurrent Liabilities Held for Sale
Derivatives Fair Value [Line Items]
Derivative liabilities noncurrent		$ 1		$ 1
Derivative Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]		Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent		Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent
[1] Includes $ 118 million and $ 6 million reported in current assets held for sale in Dominion Energy's Consolidated Balance Sheets at December 31, 2022 and 2021, respectively. Includes $ 1 million reported in noncurrent assets held for sale in Dominion Energy's Consolidated Balance Sheets at December 31, 2022. Virginia Power’s noncurrent derivative assets are presented in other deferred charges and other assets in its Consolidated Balance Sheets. Includes $ 6 million and $ 3 million reported in current liabilities held for sale in Dominion Energy's Consolidated Balance Sheets at December 31, 2022 and 2021, respectively. Includes $ 1 million reported in noncurrent liabilities held for sale in Dominion Energy's Consolidated Balance Sheets at both December 31, 2022 and 2021. Virginia Power’s noncurrent derivative liabilities are presented in other deferred credits and other liabilities in its Consolidated Balance Sheets.

Derivatives and Hedge Accoun_13

Derivatives and Hedge Accounting Activities (Gains and Losses on Derivatives in Cash Flow Hedging Relationships) (Detail) - Cash Flow Hedges - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022		Dec. 31, 2021		Dec. 31, 2020
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives	[1]	$ 89		$ 21		$ (320)
Amount of Gain (Loss) Reclassified From AOCI to Income		(57)		(61)		(302)
Increase (Decrease) in Derivatives Subject to Regulatory Treatment	[2]	855		135		(332)
Virginia Electric and Power Company
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives	[1]	80		17		(37)
Amount of Gain (Loss) Reclassified From AOCI to Income		(2)		(3)		(2)
Increase (Decrease) in Derivatives Subject to Regulatory Treatment	[2]	854		130		(338)
Commodity
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives	[1]					0
Amount of Gain (Loss) Reclassified From AOCI to Income				(1)	[3]	23
Increase (Decrease) in Derivatives Subject to Regulatory Treatment	[2]					0
Commodity | Virginia Electric and Power Company
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives	[1]					0
Amount of Gain (Loss) Reclassified From AOCI to Income						0
Increase (Decrease) in Derivatives Subject to Regulatory Treatment	[2]					0
Commodity | Operating Revenue
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Reclassified From AOCI to Income						25
Commodity | Purchased Gas
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Reclassified From AOCI to Income						(4)
Commodity | Discontinued operations
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Reclassified From AOCI to Income						2
Interest rate
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives	[1]	89	[4]	21	[4]	(309)
Amount of Gain (Loss) Reclassified From AOCI to Income		(57)	[4]	(60)	[4]	(319)
Increase (Decrease) in Derivatives Subject to Regulatory Treatment	[2]	855	[4]	135	[4]	(332)
Interest rate | Virginia Electric and Power Company
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives	[1]	80	[4]	17	[4]	(37)
Amount of Gain (Loss) Reclassified From AOCI to Income		(2)	[4]	(3)	[4]	(2)
Increase (Decrease) in Derivatives Subject to Regulatory Treatment	[2]	$ 854	[4]	$ 130	[4]	(338)
Interest rate | Discontinued operations
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Reclassified From AOCI to Income						(236)
Interest rate | Interest and Related Charges
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Reclassified From AOCI to Income						(83)
Interest rate | Interest and Related Charges | Virginia Electric and Power Company
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives	[1]					(37)
Amount of Gain (Loss) Reclassified From AOCI to Income						(2)
Increase (Decrease) in Derivatives Subject to Regulatory Treatment	[2]					(338)
Foreign currency exchange rate
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives	[1],[5]					(11)
Amount of Gain (Loss) Reclassified From AOCI to Income	[5]					(6)
Increase (Decrease) in Derivatives Subject to Regulatory Treatment	[2],[5]					0
Foreign currency exchange rate | Virginia Electric and Power Company
Derivative Instruments Gain Loss [Line Items]
Increase (Decrease) in Derivatives Subject to Regulatory Treatment	[2],[5]					$ 0
[1] Amounts deferred into AOCI have no associated effect in the Companies' Consolidated Statements of Income. Represents net derivative activity deferred into and amortized out of regulatory assets/liabilities. Amounts deferred into regulatory assets/liabilities have no associated effect in the Companies' Consolidated Statements of Income. Amounts recorded in Dominion Energy’s Consolidated Statements of Income are classified in purchased gas. Amounts recorded in the Companies' Consolidated Statements of Income are classified in interest and related charges. Amounts recorded in Dominion Energy’s Consolidated Statements of Income are classified in discontinued operations.

Derivatives and Hedge Accoun_14

Derivatives and Hedge Accounting Activities (Schedule of Derivatives not Designated as Hedging Instruments) (Detail) - Derivatives Not Designated as Hedging Instruments - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives	[1],[2]	$ 456	$ (375)	$ 42
Virginia Electric and Power Company
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives	[1],[2]	150	(53)	(104)
Commodity | Operating Revenue
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives	[1],[2]	(729)	(487)	73
Commodity | Operating Revenue | Virginia Electric and Power Company
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives	[1],[2]	(303)	(62)	(104)
Commodity | Purchased Gas
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives	[1],[2]	13	(1)	(20)
Commodity | Electric Fuel and Other Energy-Related Purchases
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives	[1],[2]	514	16	(104)
Commodity | Electric Fuel and Other Energy-Related Purchases | Virginia Electric and Power Company
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives	[1],[2]	453	9	0
Commodity | Discontinued operations
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives	[1],[2]	8	0	(11)
Interest rate | Discontinued operations
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives	[1],[2]	244	8	5
Interest rate | Interest and Related Charges
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives	[1],[2]	406	89	87
Foreign currency exchange rate | Discontinued operations
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives	[1],[2]	$ 0	$ 0	$ 12
[1] Excludes amounts related to foreign currency exchange rate derivatives that are deferred to plant under construction within property, plant and equipment and regulatory assets/liabilities that will begin to amortize once the CVOW Commercial Project is placed in service. Includes derivative activity amortized out of regulatory assets/liabilities. Amounts deferred into regulatory assets/liabilities have no associated effect in the Companies' Consolidated Statements of Income.

Earnings Per Share (Calculation

Earnings Per Share (Calculation of Basic and Diluted EPS) (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended								12 Months Ended
		Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Earnings Per Share [Abstract]
Net income from continuing operations										$ 22	$ 1,931	$ 1,039
Preferred stock dividends (see Note 19)										(93)	(68)	(65)
Net income attributable to Dominion Energy from continuing operations - Basic										(71)	1,863	974
Dilutive effect of 2019 Equity Units	[1]											(11)
Net income attributable to Dominion Energy from continuing operations - Diluted										(71)	1,863	963
Net income (loss) from discontinued operations										$ 972	$ 1,357	$ (1,440)
Average shares of common stock outstanding – Basic										823.9	807.8	831
Net effect of dilutive securities	[2]									0	0.7
Average shares of common stock outstanding – Diluted										823.9	808.5	831
EPS from continuing operations - Basic		$ (0.31)	$ 0.73	$ (0.84)	$ 0.34	$ 0.75	$ 0.58	$ 0.14	$ 0.84	$ (0.09)	$ 2.3	$ 1.17
EPS from discontinued operations - Basic		0.24	0.18	0.26	0.5	0.88	0.21	0.19	0.39	1.18	1.68	(1.73)
Net income (loss) attributable to Dominion Energy		(0.07)	0.91	(0.58)	0.84	1.63	0.79	0.33	1.23	1.09	3.98	(0.56)
EPS from continuing operations - Diluted		(0.31)	0.73	(0.84)	0.34	0.75	0.58	0.14	0.84	(0.09)	2.3	1.16
EPS from discontinued operations - Diluted		0.24	0.18	0.26	0.5	0.88	0.21	0.19	0.39	1.18	1.68	(1.73)
Net income (loss) attributable to Dominion Energy		$ (0.07)	$ 0.91	$ (0.58)	$ 0.84	$ 1.63	$ 0.79	$ 0.33	$ 1.23	$ 1.09	$ 3.98	$ (0.57)
[1] As discussed in Note 19, effective in June 2022 through its redemption in September 2022, the Series A Preferred Stock was considered to be mandatorily redeemable and was classified in current liabilities. In accordance with revised accounting standards effective January 2022, a fair value adjustment, if dilutive, of the Series A Preferred Stock was no longer included in applying the if converted method to the 2019 Equity Units. In addition, diluted net income was no longer reduced by the Series A Preferred Stock dividends. No fair value adjustment was necessary for 2021. Dilutive securities for 2021 consist primarily of stock potentially to be issued to satisfy the obligation under a settlement agreement with the SCDOR (applying the if converted method) as well as forward sales agreements entered into in November 2021 and settled in December 2022 (applying the treasury stock method). See Notes 20 and 23 for additional information.

Investments (Narrative) (Detail

Investments (Narrative) (Detail)			1 Months Ended								3 Months Ended									12 Months Ended
		Nov. 30, 2020 USD ($)	Jul. 31, 2023 USD ($)	May 31, 2022 USD ($)	Feb. 28, 2022 USD ($)	Dec. 31, 2021 USD ($)	Nov. 30, 2020	Sep. 30, 2020 USD ($)	Oct. 31, 2017 USD ($)	Sep. 30, 2014 mi	Dec. 31, 2022 USD ($)	Sep. 30, 2022 USD ($)	Aug. 31, 2022	Jun. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Sep. 30, 2021 USD ($)	Jun. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2022 USD ($)		Dec. 31, 2021 USD ($)		Dec. 31, 2020 USD ($)		Dec. 31, 2019	Sep. 30, 2023	Jul. 31, 2020 USD ($)	Mar. 31, 2020 USD ($)
Schedule of Equity Method Investments [Line Items]
Earnings (losses) from equity method investees																				$ 21,000,000		$ 15,000,000		$ (1,000,000)
Net income from discontinued operations including noncontrolling interest											$ 197,000,000	$ 152,000,000		$ 212,000,000	$ 411,000,000	$ 717,000,000	$ 170,000,000	$ 155,000,000	$ 315,000,000	972,000,000	[1],[2]	1,357,000,000	[1],[2]	(1,334,000,000)	[1],[2]
Distributions received from investment																				355,000,000		332,000,000		167,000,000
Equity method investment goodwill						$ 27,000,000					9,000,000					27,000,000				9,000,000		27,000,000
Income loss from continuing operations before income taxes extraordinary items noncontrolling interest																				(126,000,000)		2,196,000,000		725,000,000
Contributions to equity method affiliates																				43,000,000		1,021,000,000		148,000,000
Current liabilities						954,000,000					1,398,000,000					954,000,000				1,398,000,000		954,000,000
Debt maximum borrowing capacity	[3]					6,000,000,000					6,000,000,000					6,000,000,000				6,000,000,000		6,000,000,000
Retained earnings						5,373,000,000					4,065,000,000					5,373,000,000				4,065,000,000		5,373,000,000
Operating revenue from contracts with customers																				14,559,000,000		11,662,000,000		11,551,000,000
Goodwill write-off	[4]																			110,000,000
Income tax expense		$ 336,000,000				173,000,000														(148,000,000)		239,000,000		(59,000,000)
364-day term loan facility borrowings																								225,000,000
Income tax expense (benefit) from discontinued operations																				225,000,000		374,000,000		(61,000,000)
Revolving Credit Facility
Schedule of Equity Method Investments [Line Items]
Debt maximum borrowing capacity																		$ 6,000,000,000
Pivotal LNG
Schedule of Equity Method Investments [Line Items]
Ownership percentage acquired																													100%
Finite Lived Equity Method Investment Basis Difference
Schedule of Equity Method Investments [Line Items]
Carrying amount of investment that exceeded share of underlying equity						244,000,000					223,000,000					244,000,000				223,000,000		244,000,000
Unfunded commitments						$ (4,000,000)										$ (4,000,000)						(4,000,000)
Capitalized interest																				(1,000,000)
Cove Point
Schedule of Equity Method Investments [Line Items]
Ownership interest percentage of limited partner interests							100%
Income loss from continuing operations before income taxes extraordinary items noncontrolling interest																				$ 574,000,000		$ 528,000,000		511,000,000
JAX LNG LLC | Pivotal LNG
Schedule of Equity Method Investments [Line Items]
Percentage of equity interest sold to noncontrolling interest owners																													50%
Fowler Ridge
Schedule of Equity Method Investments [Line Items]
Net payment of long-term power and capacity contract								$ 150,000,000
Contract termination loss																								221,000,000
Contract termination loss net of tax																								$ 165,000,000
Fowler Ridge | BP Wind Energy North America Inc
Schedule of Equity Method Investments [Line Items]
Percentage of equity interest sold to noncontrolling interest owners								50%
Wrangler Retail Gas Holdings LLC
Schedule of Equity Method Investments [Line Items]
Ownership interest percentage of limited partner interests																						20%		20%		20%
Percentage ownership in total units						15%									15%	15%						15%
Limited partnership interest sale transaction, proceeds received																						$ 127,000,000		$ 74,000,000
Initial fair value						$ 23,000,000										$ 23,000,000						23,000,000		13,000,000
Amount of gain from sale																						87,000,000		64,000,000
Goodwill write-off																						14,000,000
Income tax expense																						$ 32,000,000		19,000,000
Wrangler Retail Gas Holdings LLC | Gas Supply, Inc.
Schedule of Equity Method Investments [Line Items]
Ownership interest percentage of limited partner interests																				15%		5%
Cash consideration from sale of noncontrolling interest																				$ 85,000,000
Amount of gain from sale																				11,000,000		$ 10,000,000
Amount of gain from sale, after tax																				8,000,000
Income tax expense																						3,000,000
Sale of interest in Cove Point																						33,000,000
Dominion Energy Virginia
Schedule of Equity Method Investments [Line Items]
Cash consideration from sale of noncontrolling interest					$ 120,000,000															215,000,000
Limited partnership interest sale transaction, proceeds received					$ 60,000,000						$ 108,000,000									$ 108,000,000
Percentage ownership in total units					50%						50%									50%
Initial fair value					$ 60,000,000						$ 107,000,000									$ 107,000,000
Amount of gain from sale											133,000,000				$ 23,000,000
Amount of gain from sale, after tax											$ 99,000,000				$ 16,000,000
Agreement entered date					2022-02
BHE | GT&S Transaction
Schedule of Equity Method Investments [Line Items]
Limited partnership interest sale transaction, proceeds received																												$ 10,000,000,000
Goodwill write-off		$ 1,400,000,000
Cove Point
Schedule of Equity Method Investments [Line Items]
Distributions received from investment																				$ 344,000,000		300,000,000		70,000,000
Percentage of noncontrolling limited partnership interest retained											50%									50%							50%
Contributions to equity method affiliates																				$ 0		0		0
Discontinued operation earnings on equity method investees																				277,000,000		259,000,000		40,000,000
Income tax expense (benefit) from discontinued operations																				92,000,000		60,000,000		8,000,000
Discontinued operation interest expense																				160,000,000		12,000,000
Cove Point | Finite Lived Equity Method Investment Basis Difference
Schedule of Equity Method Investments [Line Items]
Equity method investment goodwill						221,000,000					$ 215,000,000					221,000,000				215,000,000		221,000,000
Cove Point | Cove Point
Schedule of Equity Method Investments [Line Items]
Earnings (losses) from equity method investees																								40,000,000
Cove Point | Cove Point | GT&S Transaction
Schedule of Equity Method Investments [Line Items]
Percentage of limited partner interest sold							25%
Percentage of noncontrolling limited partnership interest retained		50%					50%
Cove Point | BHE | GT&S Transaction
Schedule of Equity Method Investments [Line Items]
Cash consideration from sale of noncontrolling interest			$ 3,300,000,000
Percentage of noncontrolling limited partnership interest retained			50%
Proceeds from settlement of related interest rate derivatives			$ 199,000,000
364-day term loan facility borrowings			600,000,000
Cove Point | BHE | GT&S Transaction | 364-day Term Loan Facilities One
Schedule of Equity Method Investments [Line Items]
Credit facility, outstanding amount			2,200,000,000
Cove Point | BHE | GT&S Transaction | 364-day Term Loan Facilities Two
Schedule of Equity Method Investments [Line Items]
Credit facility, outstanding amount			$ 750,000,000
Atlantic Coast Pipeline
Schedule of Equity Method Investments [Line Items]
Earnings (losses) from equity method investees																				$ 7,000,000		20,000,000		2,300,000,000
Percentage of noncontrolling limited partnership interest retained											53%									53%
Contributions to equity method affiliates																				$ 3,000,000		965,000,000		107,000,000
Cost to acquire equity method investments																													$ 184,000,000
Equity in earnings (losses) on investments after tax																				5,000,000		14,000,000		1,800,000,000
Atlantic Coast Pipeline | Revolving Credit Facility
Schedule of Equity Method Investments [Line Items]
Debt maximum borrowing capacity									$ 3,400,000,000																			$ 1,900,000,000
Credit facility, maturity date									Oct. 31, 2021
Atlantic Coast Pipeline | Revolving Credit Facility | Financial Guarantee | Cumulative Effect, Period of Adoption, Adjustment
Schedule of Equity Method Investments [Line Items]
Retained earnings																								48,000,000
Atlantic Coast Pipeline | Other Current Liabilities
Schedule of Equity Method Investments [Line Items]
Current liabilities						113,000,000					$ 114,000,000					113,000,000				114,000,000		113,000,000
Atlantic Coast Pipeline | DETI
Schedule of Equity Method Investments [Line Items]
Operating revenue from contracts with customers																								49,000,000
Atlantic Coast Pipeline | Pipelines | Jointly Owned Natural Gas Pipeline | Distribution
Schedule of Equity Method Investments [Line Items]
Length of natural gas pipeline (in miles) | mi										600
Duration of contract										20 years
Atlantic Coast Pipeline | Dominion Energy Gas Holdings, LLC
Schedule of Equity Method Investments [Line Items]
Ownership percentage acquired																													5%
Percentage ownership in total units																													53%
Atlantic Coast Pipeline and Cove Point
Schedule of Equity Method Investments [Line Items]
Net income from discontinued operations including noncontrolling interest																				271,000,000		244,000,000		$ (2,300,000,000)
Trading Securities
Schedule of Equity Method Investments [Line Items]
Rabbi trust securities						$ 122,000,000					$ 111,000,000					$ 122,000,000				$ 111,000,000		$ 122,000,000
2019 Series A Corporate Units
Schedule of Equity Method Investments [Line Items]
Short-term deposit				$ 2,000,000,000
2019 Series A Corporate Units | Series A Preferred Stock
Schedule of Equity Method Investments [Line Items]
Redemption obligation				$ 1,600,000,000
Preferred stock dividend rate percentage				1.75%									1.75%
2019 Series A Corporate Units | Minimum
Schedule of Equity Method Investments [Line Items]
Short-term deposit				$ 1,600,000,000
2019 Series A Corporate Units | Maximum
Schedule of Equity Method Investments [Line Items]
Short-term deposit				$ 2,000,000,000
[1] Includes income tax expense (benefit) of $ 225 million, $ 374 million and $( 61 ) million for the years ended December 31, 2022, 2021 and 2020, respectively. See Note 9 for amounts attributable to related parties. This credit facility matures in June 2026, with the potential to be extended by the borrowers to June 2028, and can be used by the borrowers under the credit facility to support bank borrowings and the issuance of commercial paper, as well as to support up to a combined $ 2.0 billion of letters of credit. See Note 3 for more information

Investments (Equity and Fixed I

Investments (Equity and Fixed Income Securities, Insurance Contracts and Cash Equivalents in Decommissioning Trust Funds) (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021
Debt and Equity Securities, FV-NI [Line Items]
Fixed income securities Fair Value		$ 1,860
Amortized Cost, Total		3,632	$ 4,235
Total Unrealized Gains		2,506	3,815
Total Unrealized Losses	[1]	(181)	(100)
Allowance for Credit Losses, Total		0	0
Fair Value, Total		5,957	7,950
Virginia Electric and Power Company
Debt and Equity Securities, FV-NI [Line Items]
Fixed income securities Fair Value		1,052
Amortized Cost, Total		2,012	1,997
Total Unrealized Gains		1,307	1,753
Total Unrealized Losses	[1]	(117)	(16)
Allowance for Credit Losses, Total		0	0
Fair Value, Total		3,202	3,734
Corporate Debt Fixed Income Securities
Debt and Equity Securities, FV-NI [Line Items]
Fixed income securities Amortized Cost, Total	[2]	640	854
Fixed income securities Total Unrealized Gains	[2]	1	32
Fixed income securities Total Unrealized Losses	[2]	(65)	(5)
Fixed income securities Allowance for Credit Losses	[2]	0	0
Fixed income securities Fair Value	[2]	576	881
Corporate Debt Fixed Income Securities | Virginia Electric and Power Company
Debt and Equity Securities, FV-NI [Line Items]
Fixed income securities Amortized Cost, Total	[2]	406	517
Fixed income securities Total Unrealized Gains	[2]	1	17
Fixed income securities Total Unrealized Losses	[2]	(47)	(3)
Fixed income securities Allowance for Credit Losses	[2]	0	0
Fixed income securities Fair Value	[2]	360	531
Government Debt Fixed Income Securities
Debt and Equity Securities, FV-NI [Line Items]
Fixed income securities Amortized Cost, Total	[2]	1,252	1,382
Fixed income securities Total Unrealized Gains	[2]	4	43
Fixed income securities Total Unrealized Losses	[2]	(70)	(7)
Fixed income securities Allowance for Credit Losses	[2]	0	0
Fixed income securities Fair Value	[2]	1,186	1,418
Government Debt Fixed Income Securities | Virginia Electric and Power Company
Debt and Equity Securities, FV-NI [Line Items]
Fixed income securities Amortized Cost, Total	[2]	664	584
Fixed income securities Total Unrealized Gains	[2]	2	16
Fixed income securities Total Unrealized Losses	[2]	(35)	(2)
Fixed income securities Allowance for Credit Losses	[2]	0	0
Fixed income securities Fair Value	[2]	631	598
Insurance Contracts
Debt and Equity Securities, FV-NI [Line Items]
Fixed income securities Amortized Cost, Total	[2]	221	255
Fixed income securities Total Unrealized Gains	[2]	0	0
Fixed income securities Total Unrealized Losses	[2]	0	0
Fixed income securities Fair Value	[2]	221	255
U.S.
Debt and Equity Securities, FV-NI [Line Items]
Equity securities Amortized Cost	[3]	1,378	1,567
Equity securities Total Unrealized Gains	[3]	2,501	3,734
Equity securities Total Unrealized Losses	[3]	(46)	(13)
Equity securities Fair Value	[3]	3,833	5,288
U.S. | Virginia Electric and Power Company
Debt and Equity Securities, FV-NI [Line Items]
Equity securities Amortized Cost	[3]	858	841
Equity securities Total Unrealized Gains	[3]	1,304	1,720
Equity securities Total Unrealized Losses	[3]	(35)	(11)
Equity securities Fair Value	[3]	2,127	2,550
Common/collective trust funds | Fixed Income
Debt and Equity Securities, FV-NI [Line Items]
Fixed income securities Amortized Cost, Total	[2]	98	168
Fixed income securities Total Unrealized Gains	[2]	0	4
Fixed income securities Total Unrealized Losses	[2]	0	0
Fixed income securities Allowance for Credit Losses	[2]	0	0
Fixed income securities Fair Value	[2]	98	172
Common/collective trust funds | Fixed Income | Virginia Electric and Power Company
Debt and Equity Securities, FV-NI [Line Items]
Fixed income securities Amortized Cost, Total	[2]	61	53
Fixed income securities Total Unrealized Gains	[2]	0	0
Fixed income securities Total Unrealized Losses	[2]	0	0
Fixed income securities Allowance for Credit Losses	[2]	0	0
Fixed income securities Fair Value	[2]	61	53
Cash equivalents and other
Debt and Equity Securities, FV-NI [Line Items]
Cash equivalents and other, Amortized Cost	[4]	43	9
Cash equivalents and other, Total Unrealized Gains	[4]	0	2
Cash equivalents and other, Total Unrealized Losses	[4]	0	(75)
Cash equivalents and other, Allowance for Credit Losses	[4]	0	0
Cash equivalents and other, Fair Value	[4]	43	(64)
Cash equivalents and other | Virginia Electric and Power Company
Debt and Equity Securities, FV-NI [Line Items]
Cash equivalents and other, Amortized Cost	[4]	23	2
Cash equivalents and other, Total Unrealized Gains	[4]	0	0
Cash equivalents and other, Total Unrealized Losses	[4]	0	0
Cash equivalents and other, Allowance for Credit Losses	[4]	0	0
Cash equivalents and other, Fair Value	[4]	$ 23	$ 2
[1] Dominion Energy's fair value of securities in an unrealized loss position was $ 1.6 billion and $ 883 million at December 31, 2022 and 2021, respectively. Virginia Power's fair value of securities in an unrealized loss position was $ 946 million and $ 425 million at December 31, 2022 and 2021, respectively. Unrealized gains and losses on fixed income securities are included in AOCI and the nuclear decommissioning trust regulatory liability as discussed in Note 2. Changes in allowance for credit losses are included in other income. Unrealized gains and losses on equity securities are included in other income and the nuclear decommissioning trust regulatory liability as discussed in Note 2. Dominion Energy includes pending sales of securities of $ 42 million and pending purchases of securities of $ 35 million at December 31, 2022 and 2021, respectively. Virginia Power includes pending sales of securities of $ 24 million and $ 5 million at December 31, 2022 and 2021, respectively.

Investments (Equity and Fixed_2

Investments (Equity and Fixed Income Securities, Insurance Contracts and Cash Equivalents in Decommissioning Trust Funds) (Parenthetical) (Detail) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Debt and Equity Securities, FV-NI [Line Items]
Net assets related to pending sales of securities	$ 42
Net assets related to pending purchases of securities		$ 35
Fair value of securities in an unrealized loss position	1,600	883
Virginia Electric and Power Company
Debt and Equity Securities, FV-NI [Line Items]
Net assets related to pending sales of securities	24	5
Fair value of securities in an unrealized loss position	$ 946	$ 425

Investments (Portion of Unreali

Investments (Portion of Unrealized Gains and Losses Relates to Equity Securities) (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Debt and Equity Securities, FV-NI [Line Items]
Net gains (losses) recognized during the period		$ (848)	$ 1,072	$ 512
Less: Net (gains) losses recognized during the period on securities sold during the period		8	(346)	(16)
Unrealized gains (losses) recognized during the period on securities still held at period end	[1]	(840)	726	496
Virginia Electric and Power Company
Debt and Equity Securities, FV-NI [Line Items]
Net gains (losses) recognized during the period		(436)	552	224
Less: Net (gains) losses recognized during the period on securities sold during the period		(7)	(190)	(6)
Unrealized gains (losses) recognized during the period on securities still held at period end	[1]	$ (443)	$ 362	$ 218
[1] Included in other income and the nuclear decommissioning trust regulatory liability as discussed in Note 2.

Investments (Fair Value of Fixe

Investments (Fair Value of Fixed Income Securities by Contractual Maturity) (Detail) $ in Millions	Dec. 31, 2022 USD ($)
Schedule of Held-to-maturity Securities [Line Items]
Due in one year or less	$ 146
Due after one year through five years	511
Due after five years through ten years	442
Due after ten years	761
Total	1,860
Virginia Electric and Power Company
Schedule of Held-to-maturity Securities [Line Items]
Due in one year or less	80
Due after one year through five years	280
Due after five years through ten years	279
Due after ten years	413
Total	$ 1,052

Investments (Selected Informati

Investments (Selected Information Regarding Equity and Fixed Income Securities) (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Schedule of Available-for-sale Securities [Line Items]
Proceeds from sales		$ 3,282	$ 3,985	$ 4,278
Realized gains	[1]	143	441	340
Realized losses	[1]	296	91	297
Virginia Electric and Power Company
Schedule of Available-for-sale Securities [Line Items]
Proceeds from sales		1,538	1,791	884
Realized gains	[1]	48	228	88
Realized losses	[1]	$ 107	$ 35	$ 68
[1] Includes realized gains and losses recorded to the nuclear decommissioning trust regulatory liability as discussed in Note 2.

Investments (Investments Under

Investments (Investments Under Equity Method of Accounting) (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Sep. 30, 2023	Dec. 31, 2021
Schedule of Equity Method Investments [Line Items]
Investment in equity method affiliates		$ 3,012		$ 2,932
Cove Point
Schedule of Equity Method Investments [Line Items]
Equity Method Investment Ownership Percentage		50%	50%
Investment in equity method affiliates	[1]	$ 2,673		2,738
Description		LNG import/export and storage facility
Atlantic Coast Pipeline
Schedule of Equity Method Investments [Line Items]
Equity Method Investment Ownership Percentage		53%
Investment in equity method affiliates	[2]	$ 0		0
Description		Gas transmission system
Wrangler Retail Gas Holdings LLC
Schedule of Equity Method Investments [Line Items]
Equity Method Investment Ownership Percentage	[3]	15%
Investment in equity method affiliates		$ 0		68
Description		Nonregulated retail energy marketing
Align RNG, LLC
Schedule of Equity Method Investments [Line Items]
Equity Method Investment Ownership Percentage	[4]	50%
Investment in equity method affiliates	[4]	$ 103		74
Description	[4]	Renewable natural gas
Dominion Energy Virginia
Schedule of Equity Method Investments [Line Items]
Equity Method Investment Ownership Percentage		50%
Investment in equity method affiliates		$ 176		0
Description		Military electric and gas
Other Investment
Schedule of Equity Method Investments [Line Items]
Investment in equity method affiliates	[5]	$ 60		$ 52
Ownership%		various
[1] Presented in noncurrent assets held for sale in Dominion Energy's Consolidated Balance Sheets at December 31, 2022 and 2021. Dominion Energy’s Consolidated Balance Sheets include a liability associated with its investment in Atlantic Coast Pipeline of $ 114 million and $ 113 million at December 31, 2022 and 2021, respectively, presented in other current liabilities. See discussion below for additional information. Dominion Energy’s sold its remaining 15 % ownership interest in March 2022, following a previous sale of 5 % of its ownership interest in 2021. See discussion below. Dominion Energy’s unfunded commitment to be made to Align RNG by the end of 2022 was $ 8 million at December 31, 2021. The commitment was fully paid in January 2022. Includes balances presented in noncurrent assets held for sale in Dominion Energy's Consolidated Balance Sheets of $ 43 million and $ 32 million as of December 31, 2022 and 2021, respectively.

Investments (Investments Unde_2

Investments (Investments Under Equity Method of Accounting) (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2022	Mar. 31, 2022
Schedule of Equity Method Investments [Line Items]
Sale of Stock, Percentage of Ownership after Transaction	5%
Align RNG, LLC
Schedule of Equity Method Investments [Line Items]
Unfunded Commitments	$ 8
Wrangler Retail Gas Holdings LLC
Schedule of Equity Method Investments [Line Items]
Percentage ownership in total units	15%		15%
Atlantic Coast Pipeline | Other Current Liabilities
Schedule of Equity Method Investments [Line Items]
Liability associated with its investment	$ 113	$ 114
Other Investment
Schedule of Equity Method Investments [Line Items]
Investment in held for sale	$ 32	$ 43

Property, Plant and Equipment (

Property, Plant and Equipment (Property, Plant and Equipment) (Detail) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Utility:
Generation	$ 23,720	$ 23,378
Transmission	15,179	13,798
Distribution	20,154	19,370
Storage	76	76
Nuclear fuel	2,373	2,306
General and other	1,625	1,527
Plant under construction	5,308	3,393
Total utility	68,435	63,848
Non-jurisdictional - including plant under construction	1,834	1,694
Nonutility:
Nonregulated generation-nuclear	1,935	1,773
Nonregulated generation-solar	411	1,941
Nuclear fuel	954	1,056
Other-including plant under construction	1,609	1,184
Total nonutility	4,909	5,954
Total property, plant and equipment	75,178	71,496
Virginia Electric and Power Company
Utility:
Generation	17,611	17,325
Transmission	13,034	11,760
Distribution	14,681	13,621
Nuclear fuel	1,823	1,702
General and other	1,019	912
Plant under construction	4,685	2,865
Total utility	52,853	48,185
Non-jurisdictional - including plant under construction	1,834	1,694
Nonutility:
Other-including plant under construction	10	11
Total nonutility	10	11
Total property, plant and equipment	$ 54,697	$ 49,890

Property, Plant and Equipment_2

Property, Plant and Equipment (Share of Jointly-Owned Power Stations) (Detail) $ in Millions	Dec. 31, 2022 USD ($)
Bath Country Pumped Storage Station
Jointly Owned Utility Plant Interests [Line Items]
Ownership interest	60%	[1]
Plant in service	$ 1,066	[1]
Accumulated depreciation	(730)	[1]
Plant under construction	$ 3	[1]
North Anna
Jointly Owned Utility Plant Interests [Line Items]
Ownership interest	88.40%	[1]
Plant in service	$ 2,540	[1]
Accumulated depreciation	(1,402)	[1]
Nuclear fuel	792	[1]
Accumulated amortization of nuclear fuel	(602)	[1]
Plant under construction	$ 253	[1]
Clover Power Station
Jointly Owned Utility Plant Interests [Line Items]
Ownership interest	50%	[1]
Plant in service	$ 611	[1]
Accumulated depreciation	$ (282)	[1]
Millstone Unit
Jointly Owned Utility Plant Interests [Line Items]
Ownership interest	93.50%	[2]
Plant in service	$ 1,487	[2]
Accumulated depreciation	(563)	[2]
Nuclear fuel	551	[2]
Accumulated amortization of nuclear fuel	(459)	[2]
Plant under construction	$ 68	[2]
Summer Unit
Jointly Owned Utility Plant Interests [Line Items]
Ownership interest	66.70%	[2]
Plant in service	$ 1,532	[2]
Accumulated depreciation	(724)	[2]
Nuclear fuel	550	[2]
Accumulated amortization of nuclear fuel	(347)	[2]
Plant under construction	$ 87	[2]
[1] Units jointly owned by Virginia Power. Unit jointly owned by Dominion Energy.

Property, Plant and Equipment_3

Property, Plant and Equipment (Schedule of Nonregulated Solar Projects) (Detail) $ in Millions		12 Months Ended
		Dec. 31, 2022 USD ($) MW	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Property Plant And Equipment [Line Items]
Project Cost		$ 167	$ 101	$ 311
Acquisition of Solar Project Greensville in Virginia
Property Plant And Equipment [Line Items]
Date Agreement Entered		2019-08
Date Agreement Closed		2019-08
Project Cost	[1]	$ 127
Date of Commercial Operations		December 2020
MW Capacity | MW		80
Acquisition of Solar Project Myrtle in Virginia
Property Plant And Equipment [Line Items]
Date Agreement Entered		2019-08
Date Agreement Closed		2019-08
Project Cost	[1]	$ 32
Date of Commercial Operations		June 2020
MW Capacity | MW		15
Acquisition of Solar Project Blackville in South Carolina
Property Plant And Equipment [Line Items]
Date Agreement Entered		2020-05
Date Agreement Closed		2020-05
Project Cost	[1]	$ 12
Date of Commercial Operations		December 2020
MW Capacity | MW		7
Acquisition of Solar Project Denmark in South Carolina
Property Plant And Equipment [Line Items]
Date Agreement Entered		2020-05
Date Agreement Closed		2020-05
Project Cost	[1]	$ 14
Date of Commercial Operations		December 2020
MW Capacity | MW		6
Acquisition of Solar Project Yemassee in South Carolina
Property Plant And Equipment [Line Items]
Date Agreement Entered		2020-05
Date Agreement Closed		2020-08
Project Cost	[1]	$ 17
Date of Commercial Operations		January 2021
MW Capacity | MW		10
Acquisition of Solar Project Trask in South Carolina
Property Plant And Equipment [Line Items]
Date Agreement Entered		2020-05
Date Agreement Closed		2020-10
Project Cost	[1]	$ 22
Date of Commercial Operations		March 2021
MW Capacity | MW		12
Acquisition of Solar Project Hardin I in Ohio
Property Plant And Equipment [Line Items]
Date Agreement Entered		2020-06
Date Agreement Closed		2020-06
Project Cost	[1]	$ 240
Date of Commercial Operations	[2]	Split
MW Capacity | MW		150
Acquisition of Solar Project Madison in Virginia
Property Plant And Equipment [Line Items]
Date Agreement Entered		2020-07
Date Agreement Closed		2020-07
Project Cost	[1]	$ 165
Date of Commercial Operations	[3]	Expected 2024
MW Capacity | MW		62
Acquisition of Solar Project Hardin II in Ohio
Property Plant And Equipment [Line Items]
Date Agreement Entered		2020-08
Date Agreement Closed	[4]	Terminated
Acquisition Of Solar Project Atlanta Farms In Ohio
Property Plant And Equipment [Line Items]
Date Agreement Entered		2022-03
Date Agreement Closed		2022-05
Project Cost	[1]	$ 390
Date of Commercial Operations	[3],[5]	Expected split
MW Capacity | MW		200
Virginia Electric and Power Company
Property Plant And Equipment [Line Items]
Project Cost		$ 77	$ 75	$ 35
Virginia Electric and Power Company | Acquisition of Solar Project Grasshopper in Virginia
Property Plant And Equipment [Line Items]
Date Agreement Entered	[6]	2018-08
Date Agreement Closed	[6]	2019-05
Project Cost	[6],[7]	$ 128
Date of Commercial Operations	[6]	October 2020
MW Capacity | MW	[6]	80
Virginia Electric and Power Company | Acquisition of Solar Project Chestnut in North Carolina
Property Plant And Equipment [Line Items]
Date Agreement Entered		2018-08
Date Agreement Closed		2019-05
Project Cost	[7]	$ 127
Date of Commercial Operations		January 2020
MW Capacity | MW		75
Virginia Electric and Power Company | Acquisition of Solar Project Ft. Powhatan in Virginia
Property Plant And Equipment [Line Items]
Date Agreement Entered		2019-06
Date Agreement Closed		2019-06
Project Cost	[7]	$ 267
Date of Commercial Operations		January 2022
MW Capacity | MW		150
Virginia Electric and Power Company | Acquisition of Solar Project Belcher in Virginia
Property Plant And Equipment [Line Items]
Date Agreement Entered	[8]	2019-06
Date Agreement Closed	[8]	2019-08
Project Cost	[7],[8]	$ 164
Date of Commercial Operations	[8]	June 2021
MW Capacity | MW	[8]	88
Virginia Electric and Power Company | Acquisition of Solar Project Bedford in Virginia
Property Plant And Equipment [Line Items]
Date Agreement Entered		2019-08
Date Agreement Closed		2019-11
Project Cost	[7]	$ 106
Date of Commercial Operations		November 2021
MW Capacity | MW		70
Virginia Electric and Power Company | Acquisition of Solar Project Maplewood in Virginia
Property Plant And Equipment [Line Items]
Date Agreement Entered		2019-10
Date Agreement Closed		2019-10
Project Cost	[7]	$ 210
Date of Commercial Operations		December 2022
MW Capacity | MW		120
Virginia Electric and Power Company | Acquisition of Solar Project Rochambeau in Virginia
Property Plant And Equipment [Line Items]
Date Agreement Entered		2019-12
Date Agreement Closed		2020-01
Project Cost	[7]	$ 35
Date of Commercial Operations		December 2021
MW Capacity | MW		20
Virginia Electric and Power Company | Acquisition of Solar Project Pumpkinseed in Virginia
Property Plant And Equipment [Line Items]
Date Agreement Entered		2020-05
Date Agreement Closed		2020-05
Project Cost	[7]	$ 138
Date of Commercial Operations		September 2022
MW Capacity | MW		60
Virginia Electric and Power Company | Acquisition of Solar Project Bookers Mill in Virginia
Property Plant And Equipment [Line Items]
Date Agreement Entered		2021-02
Date Agreement Closed		2021-06
Project Cost	[7]	$ 225
Date of Commercial Operations	[9]	Expected 2023
MW Capacity | MW		127
[1] Includes acquisition costs. In December 2020 and January 2021, 97 MW and 53 MW of the project commenced commercial operations, respectively. Dominion Energy expects to claim production tax credits on the energy generated and sold by project. In January 2023, Dominion Energy terminated its agreement, without penalty, to acquire Hardin II. Expected to be split between 2023 and 2024. Referred to as Butcher Creek once placed in service. Includes acquisition costs. Referred to as Desper once placed in service. Virginia Power expects to claim production tax credits on the energy generated and sold by project.

Property, Plant and Equipment_4

Property, Plant and Equipment (Schedule of Nonregulated Solar Projects) (Parenthetical) (Detail) - MW	1 Months Ended
	Jan. 31, 2021	Dec. 31, 2020
Acquisition of Solar Project Hardin I in Ohio
Property Plant And Equipment [Line Items]
Capacity of project commenced commercial operations	53	97

Property, Plant and Equipment_5

Property, Plant and Equipment (Narrative) (Detail) $ in Millions	1 Months Ended	12 Months Ended
	Dec. 31, 2021 USD ($)	Dec. 31, 2022 USD ($) MW	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Aug. 31, 2021 USD ($)
Property Plant And Equipment [Line Items]
Impairment of assets and other charges		$ 2,062	$ 194	$ 2,104
Dominion Energy
Property Plant And Equipment [Line Items]
Impairment of assets and other charges		1,500		665
Asset impairment charges after tax		1,100		293
Property, plant and equipment, intangible assets and right-of-use lease assets down to estimated fair value		665
Impairment of assets and other charges attributable to noncontrolling interest				267
Property, plant and equipment down to estimated fair value				$ 1,400
Terra Nova Renewable Partners | Nonregulated Solar Projects | S B L Holdco L L C
Property Plant And Equipment [Line Items]
Percentage of controlling interest					67%
Disposal group, total value of consideration					$ 456
Gain (loss) on held for sale	$ 19
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration]	Gain Loss On Disposition Of Assets
Gain (loss) on held for sale, after tax	$ 15
Clearway Energy Inc | Four Brothers And Three Cedars
Property Plant And Equipment [Line Items]
Percentage of controlling interest					50%
Disposal group, total value of consideration					$ 335
Gain (loss) on held for sale	$ 229
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration]	Gain Loss On Disposition Of Assets
Gain (loss) on held for sale, after tax	$ 176
Virginia Electric and Power Company | Virginia Regulation
Property Plant And Equipment [Line Items]
Impairment of assets and other charges			$ 318
Acquisition of Solar Project at Schools in Virginia
Property Plant And Equipment [Line Items]
Anticipated projected cost		$ 39
Aggregate generation capacity | MW		17
Project cost		$ 48
Aggregate generation capacity of service solar facilities | MW		23
Utility Property
Property Plant And Equipment [Line Items]
Sale of utility property		$ 20
Gain on sale of asset		20
Gain on sale of asset after tax		$ 15

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets (Goodwill) (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021
Goodwill [Roll Forward]
Goodwill, Beginning Balance	[1]	$ 4,253	$ 4,229
Acquisition	[2]		24
Sale of Hope	[2]	(110)
Goodwill, Ending Balance	[1]	4,143	4,253
Operating Segments | Dominion Energy Virginia
Goodwill [Roll Forward]
Goodwill, Beginning Balance	[1]	2,106	2,106
Goodwill, Ending Balance	[1]	2,106	2,106
Operating Segments | Dominion Energy South Carolina
Goodwill [Roll Forward]
Goodwill, Beginning Balance	[1]	1,521	1,521
Goodwill, Ending Balance	[1]	1,521	1,521
Operating Segments | Corporate and Other
Goodwill [Roll Forward]
Goodwill, Beginning Balance	[1]	110	110
Sale of Hope	[2]	(110)
Goodwill, Ending Balance	[1]		110
Operating Segments | Contracted Energy
Goodwill [Roll Forward]
Goodwill, Beginning Balance	[1]	516	492
Acquisition	[2]		24
Goodwill, Ending Balance	[1]	$ 516	$ 516
[1] Goodwill amounts do not contain any accumulated impairment losses. See Note 3 for more information

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets (Narrative) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Goodwill [Line Items]
Amortization expense for intangible assets	$ 103	$ 70	$ 63
Acquisition of intangible assets	$ 478
Weighted-average amortization period (years)	3 years
Virginia Electric and Power Company
Goodwill [Line Items]
Amortization expense for intangible assets	$ 67	$ 31	$ 28
Acquisition of intangible assets	$ 430
Weighted-average amortization period (years)	2 years

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets (Components of Intangible Assets) (Detail) - Software, Licenses and Other - USD ($) $ in Millions		Dec. 31, 2022	Dec. 31, 2021
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	[1]	$ 1,723	$ 1,324
Accumulated Amortization	[1]	927	612
Virginia Electric and Power Company
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	[1]	1,113	685
Accumulated Amortization	[1]	$ 577	$ 290
[1] Includes $ 253 million and $ 158 million of RGGI allowances purchased and consumed in 2022 and 2021, respectively, with deferral to a regulatory asset. Annual amortization

Goodwill and Intangible Asset_5

Goodwill and Intangible Assets (Components of Intangible Assets) (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Goodwill And Intangible Assets Disclosure [Abstract]
RGGI allowance purchased and consumed	$ 253	$ 158

Goodwill and Intangible Asset_6

Goodwill and Intangible Assets (Annual Amortization Expense of Intangible Assets) (Detail) $ in Millions	Dec. 31, 2022 USD ($)
Finite Lived Intangible Assets [Line Items]
2023	$ 68
2024	61
2025	54
2026	43
2027	25
Virginia Electric and Power Company
Finite Lived Intangible Assets [Line Items]
2023	33
2024	30
2025	26
2026	20
2027	$ 10

Regulatory Assets and Liabili_3

Regulatory Assets and Liabilities (Schedule of Regulatory Assets) (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021
Regulatory Assets [Line Items]
Regulatory assets-current		$ 1,883	$ 1,223
Regulatory assets-noncurrent		8,265	7,886
Total regulatory assets		10,148	9,109
Virginia Electric and Power Company
Regulatory Assets [Line Items]
Regulatory assets-current		1,140	850
Regulatory assets-noncurrent		4,247	4,130
Total regulatory assets		$ 5,387	4,980
Weighted Average
Regulatory Assets [Line Items]
Weighted average useful life		25 years
Weighted Average | Virginia Electric and Power Company
Regulatory Assets [Line Items]
Weighted average useful life		24 years
SCANA
Regulatory Assets [Line Items]
Electric service customers over period		20 years
Deferred cost of fuel used in electric generation
Regulatory Assets [Line Items]
Regulatory assets-current	[1]	$ 603	251
Regulatory assets-noncurrent	[1]	1,551	409
Deferred cost of fuel used in electric generation | Virginia Electric and Power Company
Regulatory Assets [Line Items]
Regulatory assets-current	[1]	133	131
Regulatory assets-noncurrent	[1]	1,551	409
Deferred rider costs for Virginia electric utility
Regulatory Assets [Line Items]
Regulatory assets-current	[2]	152	72
Regulatory assets-noncurrent	[2]	363	489
Deferred rider costs for Virginia electric utility | Virginia Electric and Power Company
Regulatory Assets [Line Items]
Regulatory assets-current	[2]	152	72
Regulatory assets-noncurrent	[2]	363	489
Ashpond and landfill closure costs
Regulatory Assets [Line Items]
Regulatory assets-current	[3]	221	193
Regulatory assets-noncurrent	[3]	$ 2,051	2,223
Regulatory assets expected collection period commencing year		2021
Ashpond and landfill closure costs | Virginia Electric and Power Company
Regulatory Assets [Line Items]
Regulatory assets-current	[3]	$ 221	193
Regulatory assets-noncurrent	[3]	$ 2,049	2,223
Regulatory assets expected collection period commencing year		2021
Deferred Nuclear Refueling Outage Costs
Regulatory Assets [Line Items]
Regulatory assets-current	[4]	$ 83	79
Deferred Nuclear Refueling Outage Costs | Virginia Electric and Power Company
Regulatory Assets [Line Items]
Regulatory assets-current	[4]	83	79
NND Project Costs
Regulatory Assets [Line Items]
Regulatory assets-current	[5]	138	138
Regulatory assets-noncurrent	[5]	2,088	2,226
Unrecognized Pension and Other Postretirement Benefit Costs
Regulatory Assets [Line Items]
Regulatory assets-noncurrent	[6]	891	488
Total regulatory assets		302	25
Unrecognized Pension and Other Postretirement Benefit Costs | Virginia Electric and Power Company
Regulatory Assets [Line Items]
Regulatory assets-noncurrent	[6]	4	3
Interest rate hedges
Regulatory Assets [Line Items]
Regulatory assets-noncurrent	[7]	169	899
Interest rate hedges | Virginia Electric and Power Company
Regulatory Assets [Line Items]
Regulatory assets-noncurrent	[7]	0	604
AROs and related funding
Regulatory Assets [Line Items]
Regulatory assets-noncurrent	[8]	$ 380	311
Amortization period for deferred costs		105 years
Ash pond and landfill closure costs | Minimum
Regulatory Assets [Line Items]
Regulatory assets amounts expected collection period		15 years
Ash pond and landfill closure costs | Minimum | Virginia Electric and Power Company
Regulatory Assets [Line Items]
Regulatory assets amounts expected collection period		15 years
Ash pond and landfill closure costs | Maximum
Regulatory Assets [Line Items]
Regulatory assets amounts expected collection period		18 years
Ash pond and landfill closure costs | Maximum | Virginia Electric and Power Company
Regulatory Assets [Line Items]
Regulatory assets amounts expected collection period		18 years
Deferred early plant retirement charges
Regulatory Assets [Line Items]
Regulatory assets-current	[9]	$ 226	226
Regulatory assets-noncurrent	[9]	0	226
Deferred early plant retirement charges | Virginia Electric and Power Company
Regulatory Assets [Line Items]
Regulatory assets-current	[9]	226	226
Regulatory assets-noncurrent	[9]	0	226
Derivatives
Regulatory Assets [Line Items]
Regulatory assets-current	[10]	256	112
Regulatory assets-noncurrent	[10]	254	34
Derivatives | Virginia Electric and Power Company
Regulatory Assets [Line Items]
Regulatory assets-current	[10]	251	105
Regulatory assets-noncurrent	[10]	148	34
Other
Regulatory Assets [Line Items]
Regulatory assets-current		204	152
Regulatory assets-noncurrent		518	581
Other | Virginia Electric and Power Company
Regulatory Assets [Line Items]
Regulatory assets-current		74	44
Regulatory assets-noncurrent		$ 132	$ 142
Deferred Project Costs | Maximum
Regulatory Assets [Line Items]
Amortization period for deferred costs		18 months
Deferred Project Costs | Maximum | Virginia Electric and Power Company
Regulatory Assets [Line Items]
Amortization period for deferred costs		18 months
[1] Reflects deferred fuel expenses for the Virginia and North Carolina jurisdictions of Virginia Power's electric generation operations and additionally for Dominion Energy, deferred fuel expenses for the South Carolina jurisdiction of its electric generation operations. Dominion Energy reflects a $66 million reduction recorded in 2022 from the application of a portion of the monetization of guarantee settlement previously reflected as regulatory liabilities associated with the approval of DESC’s cost of fuel proceedings. See Note 13 for additional information. Reflects deferrals under Virginia Power’s electric transmission FERC formula rate and the deferral of costs associated with certain current and prospective rider projects. See Note 13 for additional information. Primarily reflects legislation in Virginia which requires any CCR asset located at certain Virginia Power stations to be closed by removing the CCR to an approved landfill or through beneficial reuse. These deferred costs are expected to be collected over a period between 15 and 18 years commencing December 2021 through Rider CCR. Virginia Power is entitled to collect carrying costs on uncollected expenditures once expenditures have been made. Legislation in Virginia requires Virginia Power to defer operation and maintenance costs incurred in connection with the refueling of any nuclear-powered generating plant. These deferred costs will be amortized over the refueling cycle, not to exceed 18 months . Reflects expenditures by DESC associated with the NND Project, which pursuant to the SCANA Merger Approval Order, will be recovered from DESC electric service customers over a 20-year period ending in 2039. Represents unrecognized pension and other postretirement employee benefit costs expected to be recovered or refunded through future rates generally over the expected remaining service period of plan participants by certain of Dominion Energy's rate-regulated subsidiaries. Includes regulatory assets of $ 302 million and $ 25 million and regulatory liabilities of $ 6 million and $ 20 million in aggregate at December 31, 2022 and 2021, respectively, related to retained pension and other postretirement benefit plan assets and obligations for the East Ohio, PSNC and Questar Gas Transactions which will be reclassified to AOCI upon closing of each transaction. Reflects interest rate hedges recoverable from or refundable to customers. Certain of these instruments are settled and any related payments are being amortized into interest expense over the life of the related debt, which has a weighted-average useful life of approximately 25 years and 24 years for Dominion Energy and Virginia Power, respectively, as of December 31, 2022. Represents deferred depreciation and accretion expense related to legal obligations associated with the future retirement of generation, transmission and distribution properties. The AROs primarily relate to DESC’s electric generating facilities, including Summer, and are expected to be recovered over the related property lives and periods of decommissioning which may range up to approximately 105 years . Reflects amounts from the early retirements of certain coal- and oil-fired generating units to be amortized through 2023 in accordance with the settlement of the 2021 Triennial Review. See Note 13 for additional information. Represents changes in the fair value of derivatives, excluding separately presented interest rate hedges, that following settlement are expected to be recovered from or refunded to customers.

Regulatory Assets and Liabili_4

Regulatory Assets and Liabilities (Schedule of Regulatory Liabilities) (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021
Regulatory Liabilities [Line Items]
Regulatory liabilities-current		$ 748	$ 889
Regulatory liabilities-noncurrent		8,417	9,024
Total regulatory liabilities		9,165	9,913
Virginia Electric and Power Company
Regulatory Liabilities [Line Items]
Regulatory liabilities-current		506	647
Regulatory liabilities-noncurrent		5,499	5,740
Total regulatory liabilities		$ 6,005	6,387
SCANA
Regulatory Liabilities [Line Items]
Estimation period of collection to be credited		11 years
Electric service customers over period		20 years
Provision for future cost of removal and AROs
Regulatory Liabilities [Line Items]
Regulatory liabilities-current	[1]	$ 111	154
Regulatory liabilities-noncurrent	[1]	1,731	1,624
Provision for future cost of removal and AROs | Virginia Electric and Power Company
Regulatory Liabilities [Line Items]
Regulatory liabilities-current	[1]	111	154
Regulatory liabilities-noncurrent	[1]	1,135	1,043
Reserve for refunds and rate credits to electric utility customers
Regulatory Liabilities [Line Items]
Regulatory liabilities-current	[2]	125	420
Regulatory liabilities-noncurrent	[2]	325	448
Reserve for refunds and rate credits to electric utility customers | Virginia Electric and Power Company
Regulatory Liabilities [Line Items]
Regulatory liabilities-current	[2]	25	306
Regulatory liabilities-noncurrent	[2]	0	25
Income taxes refundable through future rates
Regulatory Liabilities [Line Items]
Regulatory liabilities-current	[3]	100	106
Regulatory liabilities-noncurrent	[3]	3,169	3,304
Income taxes refundable through future rates | Virginia Electric and Power Company
Regulatory Liabilities [Line Items]
Regulatory liabilities-current	[3]	65	63
Regulatory liabilities-noncurrent	[3]	2,272	2,335
Nuclear decommissioning trust
Regulatory Liabilities [Line Items]
Regulatory liabilities-noncurrent	[4]	1,685	2,158
Nuclear decommissioning trust | Virginia Electric and Power Company
Regulatory Liabilities [Line Items]
Regulatory liabilities-noncurrent	[4]	1,685	2,158
Monetization of guarantee settlement
Regulatory Liabilities [Line Items]
Regulatory liabilities-current	[5]	67	67
Regulatory liabilities-noncurrent	[5]	$ 702	831
Electric service customers over period		20 years
Interest rate hedges
Regulatory Liabilities [Line Items]
Regulatory liabilities-noncurrent	[6]	$ 240	0
Interest rate hedges | Virginia Electric and Power Company
Regulatory Liabilities [Line Items]
Regulatory liabilities-noncurrent	[6]	240	0
Unrecognized Pension and Other Postretirement Benefit Costs
Regulatory Liabilities [Line Items]
Regulatory liabilities-noncurrent	[7]	10	189
Total regulatory liabilities		6	20
Overrecovered Other Postretirement Benefit Costs
Regulatory Liabilities [Line Items]
Regulatory liabilities-noncurrent	[8]	140	105
Derivatives
Regulatory Liabilities [Line Items]
Regulatory liabilities-current	[9]	211	65
Regulatory liabilities-noncurrent	[9]	234	236
Derivatives | Virginia Electric and Power Company
Regulatory Liabilities [Line Items]
Regulatory liabilities-current	[9]	176	51
Regulatory liabilities-noncurrent	[9]	0	62
Other
Regulatory Liabilities [Line Items]
Regulatory liabilities-current		134	77
Regulatory liabilities-noncurrent		181	129
Other | Virginia Electric and Power Company
Regulatory Liabilities [Line Items]
Regulatory liabilities-current		129	73
Regulatory liabilities-noncurrent		$ 167	$ 117
[1] Rates charged to customers by Dominion Energy and Virginia Power's regulated businesses include a provision for the cost of future activities to remove assets that are expected to be incurred at the time of retirement. Reflects amounts previously collected from retail electric customers of DESC for the NND Project to be credited over an estimated 11-year period effective February 2019, in connection with the SCANA Merger Approval Order. Also reflects amounts to be refunded to jurisdictional retail electric customers in Virginia associated with the settlement of the 2021 Triennial Review. See Note 13 for additional information. Amounts recorded to pass the effect of reduced income taxes from the 2017 Tax Reform Act to customers in future periods, which will primarily reverse at the weighted average tax rate that was used to build the reserves over the remaining book life of the property, net of amounts to be recovered through future rates to pay income taxes that become payable when rate revenue is provided to recover AFUDC equity. Primarily reflects a regulatory liability representing amounts collected from Virginia jurisdictional customers and placed in external trusts (including income, losses and changes in fair value thereon, as applicable) for the future decommissioning of Virginia Power's utility nuclear generation stations, in excess of the related AROs. eflects amounts to be refunded to DESC electric service customers over a 20-year period ending in 2039 associated with the monetization of a bankruptcy settlement agreement. Reflects interest rate hedges recoverable from or refundable to customers. Certain of these instruments are settled and any related payments are being amortized into interest expense over the life of the related debt, which has a weighted-average useful life of approximately 25 years and 24 years for Dominion Energy and Virginia Power, respectively, as of December 31, 2022. Represents unrecognized pension and other postretirement employee benefit costs expected to be recovered or refunded through future rates generally over the expected remaining service period of plan participants by certain of Dominion Energy's rate-regulated subsidiaries. Includes regulatory assets of $ 302 million and $ 25 million and regulatory liabilities of $ 6 million and $ 20 million in aggregate at December 31, 2022 and 2021, respectively, related to retained pension and other postretirement benefit plan assets and obligations for the East Ohio, PSNC and Questar Gas Transactions which will be reclassified to AOCI upon closing of each transaction. Reflects a regulatory liability for the collection of postretirement benefit costs allowed in rates in excess of expense incurred. Represents changes in the fair value of derivatives, excluding separately presented interest rate hedges, that following settlement are expected to be recovered from or refunded to customers.

Regulatory Assets and Liabili_5

Regulatory Assets and Liabilities (Narrative) (Detail) $ in Billions	Dec. 31, 2022 USD ($)
Public Utilities General Disclosures [Line Items]
Regulatory assets not expect to earn return	$ 4.4
Period for which expenditures are expected to be recovered	2 years
Virginia Electric and Power Company
Public Utilities General Disclosures [Line Items]
Regulatory assets not expect to earn return	$ 2.7
Period for which expenditures are expected to be recovered	2 years

Regulatory Matters (Narrative)

Regulatory Matters (Narrative) (Detail) $ in Millions

1 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

13 Months Ended

Feb. 28, 2023 USD ($)

Jan. 31, 2023 USD ($)

Nov. 30, 2022 USD ($)

Oct. 31, 2022 USD ($) MW

Sep. 30, 2022 USD ($)

Aug. 31, 2022 USD ($)

Jul. 31, 2022 USD ($)

Jun. 30, 2022 USD ($)

May 31, 2022 USD ($)

Apr. 30, 2022 USD ($)

Jan. 31, 2022 USD ($)

Nov. 30, 2021 USD ($)

Oct. 31, 2021 USD ($)

Sep. 30, 2021 Project MW

Aug. 31, 2021 USD ($)

Apr. 30, 2021 USD ($)

Dec. 31, 2020 USD ($)

Apr. 30, 2020 USD ($) GW MW

Mar. 31, 2020 USD ($)

Jan. 31, 2020

Nov. 30, 2013 mi kV

Dec. 31, 2011

Jun. 30, 2022 USD ($)

Mar. 31, 2022 USD ($)

Mar. 31, 2021 USD ($)

Sep. 30, 2022

Dec. 31, 2022 USD ($)

Dec. 31, 2021 USD ($)

Dec. 31, 2020 USD ($)

Dec. 31, 2019 USD ($)

Dec. 31, 2018 USD ($)

Dec. 31, 2008

Mar. 31, 2023 USD ($)

Feb. 28, 2022 USD ($)

Public Utilities General Disclosures [Line Items]

Impairment of assets and other charges

$ 2,062

$ 194

$ 2,104

Regulatory assets

10,148

9,109

Regulatory liabilities

748

889

Rider DSM

Public Utilities General Disclosures [Line Items]

Increase in customer usage tracker

$ 46

Target to Reach by End of 2025

Public Utilities General Disclosures [Line Items]

Energy efficiency target percentage. based on energy savings from 2019 baseline

5%

Virginia Regulation

Public Utilities General Disclosures [Line Items]

Percentage of electric energy excluding existing nuclear generation and certain new carbon resources

100%

Cap on revenue reductions in the first triennial

$ 50

South Carolina Regulation | South Carolina Electric Base Rate Case

Public Utilities General Disclosures [Line Items]

Increase (decrease) in revenue requirement

$ 62

Approved return on equity percentage

9.50%

Public utilities, requested rate increase amortization of certain excess deferred income taxes

$ 36

Public utilities, retail electric customer balance

15

Public utilities energy efficiency upgrades and critical health and safety repairs

$ 15

Regulatory assets

237

South Carolina Regulation | South Carolina Electric Base Rate Case | Impairment of Assets and Other Charges (Benefits)

Public Utilities General Disclosures [Line Items]

Impairment of assets and other charges

249

Impairment of assets and other charges after tax

187

South Carolina Regulation | South Carolina Electric Base Rate Case | Other Income

Public Utilities General Disclosures [Line Items]

Impairment of assets and other charges

18

Impairment of assets and other charges after tax

14

Ohio Regulation | PIR Program

Public Utilities General Disclosures [Line Items]

Return of equity percentage

3%

Percentage of pipeline system replaced

25%

Projected capital investment

$ 200

Total gross plant investment estimated cost

225

Cumulative gross plant investment estimated cost

2,200

Proposed revenue requirement

273

Ohio Regulation | April 2021 CEP Program

Public Utilities General Disclosures [Line Items]

Total gross plant investment estimated cost

$ 99

99

$ 137

Cumulative gross plant investment estimated cost

957

957

Proposed revenue requirement

$ 119

Ohio Regulation | February 2022 CEP Program

Public Utilities General Disclosures [Line Items]

Total gross plant investment estimated cost

231

231

231

Cumulative gross plant investment estimated cost

$ 952

952

952

Proposed revenue requirement

118

$ 118

Ohio Regulation | CEP Program

Public Utilities General Disclosures [Line Items]

Total gross plant investment estimated cost

146

Cumulative gross plant investment estimated cost

1,100

Percentage of debt rate on capital investments

6.50%

Proposed revenue requirement

131

Ohio Regulation | PIPP Plus Program

Public Utilities General Disclosures [Line Items]

Projected deferred program costs

22

Accumulated arrearages

4

Ohio Regulation | PIR Program

Public Utilities General Disclosures [Line Items]

Return of equity percentage

3%

Ohio Regulation | UEX Rider

Public Utilities General Disclosures [Line Items]

Actual revenue requirement

$ 20

Public utilities, under-recovered accumulated bad debt expense

$ 7

Recovery of bad debt expense

$ 13

Virginia Electric and Power Company

Public Utilities General Disclosures [Line Items]

Regulatory assets

5,387

4,980

Regulatory liabilities

506

647

Virginia Electric and Power Company | Impairment of Assets and Other Charges

Public Utilities General Disclosures [Line Items]

Impairment of assets and other charges

$ 751

$ 76

127

Impairment of assets and other charges after tax

$ 559

$ 56

94

Virginia Electric and Power Company | Nuclear Life Extension Program

Public Utilities General Disclosures [Line Items]

Proposed cost of project

$ 3,900

Virginia Electric and Power Company | Income Payment Program

Public Utilities General Disclosures [Line Items]

Total revenue requirement

$ 93

Virginia Electric and Power Company | Grid Transformation And Security Act | Impairment of Assets and Other Charges

Public Utilities General Disclosures [Line Items]

Impairment of assets and other charges

$ 130

Impairment of assets and other charges (benefits)

130

Impairment of assets and other charges (benefits) after tax

97

Virginia Electric and Power Company | Virginia Power North Carolina Fuel Filing

Public Utilities General Disclosures [Line Items]

Fuel Component of Electric Rates

$ 107

Increase in Fuel Component of Electric Rates

$ 80

Fuel components recovery period

2 years

Virginia Electric and Power Company | Utility-scale Solar

Public Utilities General Disclosures [Line Items]

Targeted capacity provided by legislation | MW

474

661

Proposed cost of project

$ 1,200

$ 1,400

Number of utility scale projects | Project

13

Virginia Electric and Power Company | Energy Storage

Public Utilities General Disclosures [Line Items]

Targeted capacity provided by legislation | MW

16

70

Virginia Electric and Power Company | CVOW Commercial Project

Public Utilities General Disclosures [Line Items]

Estimated cost

$ 1,100

Proposed cost of project, sharing cost amount

$ 10,300

Proposed cost of project, sharing cost amount

13,700

Virginia Electric and Power Company | Virginia Regulation

Public Utilities General Disclosures [Line Items]

Rate reduction

50

Increase (decrease) in revenue requirement

330

Impairment of assets and other charges

318

Refund to customer over 6 month period

255

Refund to customer three years

75

Increase (Decrease) Over Previous Year

309

Virginia Electric and Power Company | Virginia Regulation | Impairment of Assets and Other Charges

Public Utilities General Disclosures [Line Items]

Impairment of assets and other charges

318

Impairment of assets and other charges after tax

237

Virginia Electric and Power Company | Virginia Regulation | Operating Revenue

Public Utilities General Disclosures [Line Items]

Impairment of assets and other charges

356

Impairment of assets and other charges after tax

265

Virginia Electric and Power Company | Virginia Regulation | Regulatory Asset Associated with Early Retirements

Public Utilities General Disclosures [Line Items]

Impairment of assets and other charges

549

Impairment of assets and other charges after tax

$ 409

Virginia Electric and Power Company | Virginia Regulation | Impairment of Assets and Other Charges (Benefits)

Public Utilities General Disclosures [Line Items]

Impairment of assets and other charges

$ 180

Impairment of assets and other charges after tax

134

Virginia Electric and Power Company | Virginia Regulation | Base Rate Case

Public Utilities General Disclosures [Line Items]

Increase (decrease) in revenue requirement

$ 50

Authorized return percentage

9.35%

Virginia Electric and Power Company | Virginia Regulation | Annual Fuel Factor

Public Utilities General Disclosures [Line Items]

Total revenue requirement

$ 2,300

Rate year beginning

2022-07

Estimated under-recovered balances

$ 1,000

Increase (decrease) in revenue requirement

1,800

Fuel cost recognized

191

Fuel cost recognized after-tax

$ 142

Public utilities collection of requested under-recovered projected fuel expense period

3 years

Public utilities collection of requested under-recovered projected fuel expense beginning date

Jul. 01, 2022

Public utilities exclude from recovery through base rates one half of financing costs period

3 years

Virginia Electric and Power Company | Virginia Regulation | Surry Switching Station Transmission Line

Public Utilities General Disclosures [Line Items]

Miles of Lines | mi

7

Type of Line | kV

500

Virginia Electric and Power Company | Virginia Regulation | Transmission Line from Skiffes Creek Switching Station to Wheaton Substation

Public Utilities General Disclosures [Line Items]

Miles of Lines | mi

20

Type of Line | kV

230

Virginia Electric and Power Company | Virginia Regulation | Maximum | Annual Fuel Factor

Public Utilities General Disclosures [Line Items]

Increase (decrease) in revenue requirement

1,300

Virginia Electric and Power Company | Virginia Regulation | Minimum | Annual Fuel Factor

Public Utilities General Disclosures [Line Items]

Increase (decrease) in revenue requirement

1,200

Virginia Electric and Power Company | Virginia Regulation | Solar And Onshore Wind | Target to Reach by End of 2035

Public Utilities General Disclosures [Line Items]

Targeted capacity provided by legislation | GW

16.1

Virginia Electric and Power Company | Virginia Regulation | Utility-scale Solar | Target to Reach by End of 2035 | Maximum

Public Utilities General Disclosures [Line Items]

Targeted capacity provided by legislation | GW

15

Virginia Electric and Power Company | Virginia Regulation | Utility-scale Solar | Target to Reach by End of 2024

Public Utilities General Disclosures [Line Items]

Targeted capacity provided by legislation | GW

3

Virginia Electric and Power Company | Virginia Regulation | Small-scale Solar | Target to Reach by End of 2035

Public Utilities General Disclosures [Line Items]

Targeted capacity provided by legislation | GW

1.1

Virginia Electric and Power Company | Virginia Regulation | Energy Storage | Target to Reach by End of 2035

Public Utilities General Disclosures [Line Items]

Targeted capacity provided by legislation | GW

2.7

Virginia Electric and Power Company | Virginia Regulation | Pumped Storage | Target to Reach by End of 2035 | Maximum

Public Utilities General Disclosures [Line Items]

Targeted capacity provided by legislation | MW

800

Virginia Electric and Power Company | Virginia Regulation | Offshore Wind Facility | Target to Reach by End of 2035 | Maximum

Public Utilities General Disclosures [Line Items]

Targeted capacity provided by legislation | GW

5.2

Constructed by utility capacity | GW

3

Virginia Electric and Power Company | Virginia Regulation | Offshore Wind Facility | Target to Reach by End of 2035 | Minimum

Public Utilities General Disclosures [Line Items]

Constructed by utility capacity | GW

2.5

Virginia Electric and Power Company | North Carolina Regulation | Base Rate Case

Public Utilities General Disclosures [Line Items]

Approved return on equity percentage

9.75%

Public Service Company Of North Carolina | North Carolina Regulation | Rider D

Public Utilities General Disclosures [Line Items]

Increase (decrease) in gas cost

$ (56)

$ (154)

$ (41)

$ 126

56

Dominion Energy South Carolina Inc | South Carolina Regulation | Rider DSM

Public Utilities General Disclosures [Line Items]

Annual transportation cost rate adjustment, approval amount requested to recover amount

$ 46

$ 60

Application date

2023-01

2022-01

Approval date

2022-04

Dominion Energy South Carolina Inc | South Carolina Regulation | Gas Rate Case

Public Utilities General Disclosures [Line Items]

Total revenue requirement

$ 553

Increase (decrease) in revenue requirement

129

Increase (decrease) in base rate revenue requirement

$ 16

Base rate increase in revenue required

12

Approved increase in revenue required

125

Total revenue requirement approved

549

Dominion Energy South Carolina Inc | South Carolina Regulation | Cost of Fuel

Public Utilities General Disclosures [Line Items]

Rate year beginning

2023-05

Application date

2023-02

Increase decrease in annual base fuel component recoveries

$ 176

$ 168

$ 399

$ 143

Regulatory liabilities

$ 66

Dominion Energy South Carolina Inc | South Carolina Regulation | Electric - Other

Public Utilities General Disclosures [Line Items]

Increase (decrease) in revenue requirement

24

Questar Gas Company | Utah Regulation

Public Utilities General Disclosures [Line Items]

Increase (decrease) in gas cost

$ 92

$ 128

$ 94

Questar Gas Company | Utah Regulation | Base Rate Case

Public Utilities General Disclosures [Line Items]

Increase (decrease) in revenue requirement

$ 71

Authorized return percentage

9.50%

Percentage of earned return

10.30%

Approved return on equity percentage

9.60%

Approved increase in revenue required

$ 48

Regulatory Matters - Schedule o

Regulatory Matters - Schedule of Additional Significant Riders Associated with Virginia Power Projects (Detail) - Virginia Electric and Power Company $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($)
Rider B
Public Utilities General Disclosures [Line Items]
Application Date	2022-06
Approval Date	January 2023
Rate Year Beginning	2023-04
Total Revenue Requirement (millions)	$ 34
Increase (decrease) in revenue requirement	$ 18
Rider B
Public Utilities General Disclosures [Line Items]
Application Date	2022-06
Approval Date	January 2023
Rate Year Beginning	2024-04
Total Revenue Requirement (millions)	$ 34
Rider BW
Public Utilities General Disclosures [Line Items]
Application Date	2021-10
Approval Date	May 2022
Rate Year Beginning	2022-09
Total Revenue Requirement (millions)	$ 145
Increase (decrease) in revenue requirement	$ 32
Rider BW
Public Utilities General Disclosures [Line Items]
Application Date	2021-10
Approval Date	May 2022
Rate Year Beginning	2023-09
Total Revenue Requirement (millions)	$ 120
Increase (decrease) in revenue requirement	$ (25)
Rider CCR
Public Utilities General Disclosures [Line Items]
Application Date	2022-02
Approval Date	October 2022
Rate Year Beginning	2022-12
Total Revenue Requirement (millions)	$ 231
Increase (decrease) in revenue requirement	$ 15
Rider CE
Public Utilities General Disclosures [Line Items]
Application Date	2021-09
Approval Date	March 2022
Rate Year Beginning	2022-05
Total Revenue Requirement (millions)	$ 71
Increase (decrease) in revenue requirement	$ 61
Rider CE
Public Utilities General Disclosures [Line Items]
Application Date	2022-10
Approval Date	Pending
Rate Year Beginning	2023-05
Total Revenue Requirement (millions)	$ 89
Increase (decrease) in revenue requirement	$ 18
Rider E
Public Utilities General Disclosures [Line Items]
Application Date	2022-01
Approval Date	September 2022
Rate Year Beginning	2022-11
Total Revenue Requirement (millions)	$ 101
Increase (decrease) in revenue requirement	$ 34
Rider E
Public Utilities General Disclosures [Line Items]
Application Date	2023-01
Approval Date	Pending
Rate Year Beginning	2023-11
Total Revenue Requirement (millions)	$ 109
Increase (decrease) in revenue requirement	$ 8
Rider GT
Public Utilities General Disclosures [Line Items]
Application Date	2021-08
Approval Date	May 2022
Rate Year Beginning	2022-06
Total Revenue Requirement (millions)	$ 56
Rider GT
Public Utilities General Disclosures [Line Items]
Application Date	2022-08
Approval Date	Pending
Rate Year Beginning	2023-06
Total Revenue Requirement (millions)	$ 16
Increase (decrease) in revenue requirement	$ (40)
Rider GV
Public Utilities General Disclosures [Line Items]
Application Date	2021-06
Approval Date	December 2021
Rate Year Beginning	2023-04
Total Revenue Requirement (millions)	$ 127
Increase (decrease) in revenue requirement	$ (15)
Rider OSW
Public Utilities General Disclosures [Line Items]
Application Date	2021-11
Approval Date	August 2022
Rate Year Beginning	2022-09
Total Revenue Requirement (millions)	$ 79
Rider OSW
Public Utilities General Disclosures [Line Items]
Application Date	2022-11
Approval Date	Pending
Rate Year Beginning	2023-09
Total Revenue Requirement (millions)	$ 271
Increase (decrease) in revenue requirement	$ 192
Rider PPA
Public Utilities General Disclosures [Line Items]
Application Date	2022-12
Approval Date	Pending
Rate Year Beginning	2023-09
Total Revenue Requirement (millions)	$ (22)
Increase (decrease) in revenue requirement	$ (17)
Rider R
Public Utilities General Disclosures [Line Items]
Application Date	2021-06
Approval Date	March 2022
Rate Year Beginning	2022-04
Total Revenue Requirement (millions)	$ 59
Increase (decrease) in revenue requirement	$ 1
Rider R
Public Utilities General Disclosures [Line Items]
Application Date	2021-06
Approval Date	March 2022
Rate Year Beginning	2023-04
Total Revenue Requirement (millions)	$ 55
Increase (decrease) in revenue requirement	$ (4)
Rider RGGI
Public Utilities General Disclosures [Line Items]
Application Date	2021-12
Approval Date	Withdrawn
Rider RGGI
Public Utilities General Disclosures [Line Items]
Application Date	2022-12
Approval Date	Pending
Rate Year Beginning	2023-09
Total Revenue Requirement (millions)	$ 373
Rider RPS
Public Utilities General Disclosures [Line Items]
Application Date	2021-12
Approval Date	June 2022
Rate Year Beginning	2022-09
Total Revenue Requirement (millions)	$ 140
Increase (decrease) in revenue requirement	$ 127
Rider RPS
Public Utilities General Disclosures [Line Items]
Application Date	2022-12
Approval Date	Pending
Rate Year Beginning	2023-09
Total Revenue Requirement (millions)	$ 111
Increase (decrease) in revenue requirement	$ (29)
Rider S
Public Utilities General Disclosures [Line Items]
Application Date	2021-06
Approval Date	February 2022
Rate Year Beginning	2023-04
Total Revenue Requirement (millions)	$ 191
Increase (decrease) in revenue requirement	$ (1)
Rider SNA
Public Utilities General Disclosures [Line Items]
Application Date	2021-10
Approval Date	July 2022
Rate Year Beginning	2022-09
Total Revenue Requirement (millions)	$ 107
Rider SNA
Public Utilities General Disclosures [Line Items]
Application Date	2022-10
Approval Date	Pending
Rate Year Beginning	2023-09
Total Revenue Requirement (millions)	$ 50
Increase (decrease) in revenue requirement	$ (57)
Rider T1
Public Utilities General Disclosures [Line Items]
Application Date	2022-05
Approval Date	July 2022
Rate Year Beginning	2022-09
Total Revenue Requirement (millions)	$ 706
Increase (decrease) in revenue requirement	$ (168)
Rider U
Public Utilities General Disclosures [Line Items]
Application Date	2021-06
Approval Date	March 2022
Rate Year Beginning	2022-04
Total Revenue Requirement (millions)	$ 95
Increase (decrease) in revenue requirement	$ 15
Rider U
Public Utilities General Disclosures [Line Items]
Application Date	2022-06
Approval Date	Pending
Rate Year Beginning	2023-04
Total Revenue Requirement (millions)	$ 74
Increase (decrease) in revenue requirement	$ (21)
Rider US-2
Public Utilities General Disclosures [Line Items]
Application Date	2021-10
Approval Date	June 2022
Rate Year Beginning	2022-09
Total Revenue Requirement (millions)	$ 11
Increase (decrease) in revenue requirement	$ 2
Rider US-3
Public Utilities General Disclosures [Line Items]
Application Date	2021-08
Approval Date	March 2022
Rate Year Beginning	2022-06
Total Revenue Requirement (millions)	$ 50
Increase (decrease) in revenue requirement	$ 12
Rider US-3
Public Utilities General Disclosures [Line Items]
Application Date	2022-08
Approval Date	Pending
Rate Year Beginning	2023-06
Total Revenue Requirement (millions)	$ 40
Increase (decrease) in revenue requirement	$ (10)
Rider US-4
Public Utilities General Disclosures [Line Items]
Application Date	2021-08
Approval Date	March 2022
Rate Year Beginning	2022-06
Total Revenue Requirement (millions)	$ 15
Increase (decrease) in revenue requirement	$ 5
Rider US-4
Public Utilities General Disclosures [Line Items]
Application Date	2022-08
Approval Date	Pending
Rate Year Beginning	2023-06
Total Revenue Requirement (millions)	$ 17
Increase (decrease) in revenue requirement	$ 2
Rider W
Public Utilities General Disclosures [Line Items]
Application Date	2022-06
Approval Date	Pending
Rate Year Beginning	2023-04
Total Revenue Requirement (millions)	$ 106
Increase (decrease) in revenue requirement	$ (15)
Rider W
Public Utilities General Disclosures [Line Items]
Application Date	2022-06
Approval Date	Pending
Rate Year Beginning	2024-04
Total Revenue Requirement (millions)	$ 109
Increase (decrease) in revenue requirement	$ 3
DSM Riders
Public Utilities General Disclosures [Line Items]
Application Date	2021-12
Approval Date	August 2022
Rate Year Beginning	2022-09
Total Revenue Requirement (millions)	$ 91
Increase (decrease) in revenue requirement	$ 17
DSM Riders
Public Utilities General Disclosures [Line Items]
Application Date	2022-12
Approval Date	Pending
Rate Year Beginning	2023-09
Total Revenue Requirement (millions)	$ 107
Increase (decrease) in revenue requirement	$ 16

Regulatory Matters - Schedule_2

Regulatory Matters - Schedule of Additional Significant Riders Associated with Virginia Power Projects (Parenthetical) (Detail) $ in Millions	1 Months Ended						3 Months Ended		12 Months Ended
	Dec. 31, 2022 USD ($) Program	Jun. 30, 2022 USD ($)	May 31, 2022 USD ($)	Dec. 31, 2021 USD ($) Program	Oct. 31, 2021 USD ($)	Jun. 30, 2021 USD ($)	Sep. 30, 2022 USD ($)	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Public Utilities General Disclosures [Line Items]
Impairment of assets and other charges									$ 2,062	$ 194	$ 2,104
Depreciation, depletion and amortization									2,442	2,103	1,991
Virginia Electric and Power Company
Public Utilities General Disclosures [Line Items]
Depreciation, depletion and amortization									1,736	1,364	$ 1,252
Rider SNA | Virginia Electric and Power Company
Public Utilities General Disclosures [Line Items]
Total revenue requirement									107
Rider T1 | Virginia Electric and Power Company
Public Utilities General Disclosures [Line Items]
Total revenue requirement									706
Rider U | Virginia Electric and Power Company
Public Utilities General Disclosures [Line Items]
Total revenue requirement									$ 95
Virginia Regulation | Virginia Electric and Power Company
Public Utilities General Disclosures [Line Items]
Impairment of assets and other charges										$ 318
Depreciation, depletion and amortization							$ 33
Depreciation and amortization after tax							$ 25
Virginia Regulation | Virginia Electric and Power Company | Impairment of Assets and Other Charges (Benefits)
Public Utilities General Disclosures [Line Items]
Impairment of assets and other charges								$ 180
Impairment of assets and other charges after tax								$ 134
Virginia Regulation | Rider SNA | Virginia Electric and Power Company | Operating Segments | First Phase of Nuclear Life Extension Program
Public Utilities General Disclosures [Line Items]
Projected capital investment					$ 1,200
Virginia Regulation | Rider T1 | Virginia Electric and Power Company | Operating Segments
Public Utilities General Disclosures [Line Items]
Total revenue requirement			$ 224
Virginia Regulation | Rider T1 | Virginia Electric and Power Company | Operating Segments | Transmission Component Of Virginia Powers
Public Utilities General Disclosures [Line Items]
Total revenue requirement			$ 482
Virginia Regulation | Rider U | Virginia Electric and Power Company | Previous Phase
Public Utilities General Disclosures [Line Items]
Projected capital investment		$ 74				$ 60
Virginia Regulation | Rider U | Virginia Electric and Power Company | Six Phase
Public Utilities General Disclosures [Line Items]
Projected capital investment						$ 35
Virginia Regulation | Rider DSM | Virginia Electric and Power Company
Public Utilities General Disclosures [Line Items]
Amount of cost cap recovery	$ 150			$ 140
Public utilities energy efficiency program cost exceed percentage	15%			15%
Virginia Regulation | Rider DSM | Virginia Electric and Power Company | New Demand Response Program
Public Utilities General Disclosures [Line Items]
Number of new demand response programs | Program	1
Virginia Regulation | Rider DSM | Virginia Electric and Power Company | Operating Segments | Energy Efficiency Program
Public Utilities General Disclosures [Line Items]
Number of new energy efficiency programs | Program	4			9
Virginia Regulation | Rider DSM | Virginia Electric and Power Company | Operating Segments | New Program Bundles
Public Utilities General Disclosures [Line Items]
Number of new program bundles | Program	4

Regulatory Matters - Summary of

Regulatory Matters - Summary of Virginia Power Electric Transmission Project Applied (Detail) - Virginia Electric and Power Company $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) mi kV
Elmont-Ladysmith rebuild and related projects in the Counties of Hanover and Caroline, Virginia
Public Utilities General Disclosures [Line Items]
Application Date	2021-04
Approval Date	2022-04
Type of Line | kV	500
Miles of Lines | mi	26
Cost Estimate | $	$ 95
Rebuild transmission lines and related projects in the City of Staunton and County of Augusta, Virginia
Public Utilities General Disclosures [Line Items]
Application Date	2021-11
Approval Date	2022-08
Type of Line | kV	230
Miles of Lines | mi	21
Cost Estimate | $	$ 45
Build new Dulles Towne Center substation and line loop in the County of Loudoun, Virginia
Public Utilities General Disclosures [Line Items]
Application Date	2021-12
Approval Date	2022-07
Type of Line | kV	230
Miles of Lines | mi	1
Cost Estimate | $	$ 105
Build new Aviator substation and line loop in the County of Loudoun, Virginia
Public Utilities General Disclosures [Line Items]
Application Date	2022-02
Approval Date	2022-11
Type of Line | kV	230
Miles of Lines | mi	1
Cost Estimate | $	$ 80
Nimbus line loop and substation and new 230 kV line in the County of Loudon, Virginia
Public Utilities General Disclosures [Line Items]
Application Date	2022-02
Approval Date	2022-10
Type of Line | kV	230
Miles of Lines | mi	1
Cost Estimate | $	$ 40
Partial rebuild of Bristers-Ox 115 kV line in Fauquier and Prince William Counties, Virginia
Public Utilities General Disclosures [Line Items]
Application Date	2022-08
Type of Line | kV	115
Miles of Lines | mi	15
Cost Estimate | $	$ 40
Construct new switching station, substations, transmission lines and related projects in Lunenberg and Mecklenburg Counties Virginia
Public Utilities General Disclosures [Line Items]
Application Date	2022-10
Type of Line | kV	230
Miles of Lines | mi	18
Cost Estimate | $	$ 230
Construct new switching station, substation, transmission lines and related projects in Charlotte, Halifax and Mecklenburg Counties, Virginia
Public Utilities General Disclosures [Line Items]
Application Date	2022-10
Type of Line | kV	230
Miles of Lines | mi	26
Cost Estimate | $	$ 215
Construct new Mars and Wishing Star substations, transmission lines and related projects in Loudoun County, Virginia
Public Utilities General Disclosures [Line Items]
Application Date	2022-10
Type of Line	500/230 kV
Miles of Lines | mi	4
Cost Estimate | $	$ 720
Construct new Altair switching station, transmission lines and related projects in Loudoun County, Virginia
Public Utilities General Disclosures [Line Items]
Application Date	2022-11
Type of Line	230 kV
Miles of Lines | mi	2
Cost Estimate | $	$ 50
Construct new Cirrus and Keyser switching stations, transmission lines and related projects in Culpeper, Virginia
Public Utilities General Disclosures [Line Items]
Application Date	2022-11
Type of Line	230 kV
Miles of Lines | mi	5
Cost Estimate | $	$ 65

Asset Retirement Obligations (C

Asset Retirement Obligations (Changes to AROs) (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022		Dec. 31, 2021
Asset Retirement Obligations [Line Items]
AROs, Beginning balance		$ 5,333	[1]	$ 5,221
Obligations incurred during the period		138		28
Obligations settled during the period		(125)		(155)
Revisions in estimated cash flows		46	[2]	80	[3]
Accretion		210		208
Sale of non-wholly-owned nonregulated solar facilities				(49)
Sales of Kewaunee and Hope		(175)
AROs, Ending balance	[1]	5,427		5,333
Virginia Electric and Power Company
Asset Retirement Obligations [Line Items]
AROs, Beginning balance		3,923	[1]	3,820
Obligations incurred during the period		132		26
Obligations settled during the period		(155)		(131)
Revisions in estimated cash flows		48	[2]	67	[3]
Accretion		145		141
AROs, Ending balance	[1]	$ 4,093		$ 3,923
[1] Includes $ 196 million and $ 365 million reported in other current liabilities for Dominion Energy at December 31, 2021 and 2022, respectively. Primarily reflects revisions to asbestos abatement costs associated with the early retirement of certain retired electric generation facilities. Reflects revisions to future ash pond and landfill closure costs at certain utility generation facilities, and additionally for Dominion Energy estimated cash flow projections associated with the recovery of spent nuclear fuel costs for its AROs associated with the decommissioning of Kewaunee and estimated cash flow projections associated with DESC's gas distribution pipelines. For Dominion Energy, these revisions in 2021 resulted in a charge of $ 44 million ($ 35 million after-tax) within other operations and maintenance expense in the Consolidated Statements of Income as well as a $ 25 million decrease to property, plant and equipment, net.

Asset Retirement Obligations _2

Asset Retirement Obligations (Changes to AROs) (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Asset Retirement Obligations [Line Items]
Asset retirement obligation, liabilities incurred	$ 138	$ 28
Property, plant and equipment, net, decrease	25
Other Current Liabilities
Asset Retirement Obligations [Line Items]
Asset retirement obligations	365	$ 196
Other Operations and Maintenance
Asset Retirement Obligations [Line Items]
Asset retirement obligation, liabilities incurred	44
Asset retirement obligation, liabilities incurred after tax	$ 35

Asset Retirement Obligations (N

Asset Retirement Obligations (Narrative) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Asset Retirement Obligations [Line Items]
Asset retirement obligation, liabilities incurred	$ 138	$ 28
Nuclear decommissioning trust funds	5,957	7,950
Dominion Energy
Asset Retirement Obligations [Line Items]
Asset retirement obligation, liabilities incurred	1,900	2,000
D Virginia Electric And Power Company | Future Decommissioning Of Nuclear Facilities
Asset Retirement Obligations [Line Items]
Asset retirement obligation, liabilities incurred	900	900
D Virginia Electric And Power Company | D Cost Of Landfills And Beneficial Reuse
Asset Retirement Obligations [Line Items]
Asset retirement obligation, liabilities incurred	2,800	2,900
Virginia Electric and Power Company
Asset Retirement Obligations [Line Items]
Asset retirement obligation, liabilities incurred	132	26
Nuclear decommissioning trust funds	$ 3,202	$ 3,734

Leases (Lease Assets and Liabil

Leases (Lease Assets and Liabilities Recorded in Consolidated Balance Sheets) (Detail) - USD ($) $ in Millions		Dec. 31, 2022	Dec. 31, 2021
Lessee Lease Disclosure [Line Items]
Operating lease assets	[1]	$ 415	$ 506
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]		Deferred Charges Regulatory Assets And Other Assets Noncurrent	Deferred Charges Regulatory Assets And Other Assets Noncurrent
Finance lease assets	[2]	$ 144	$ 144
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]		Property, plant and equipment	Property, plant and equipment
Total lease assets		$ 559	$ 650
Operating lease liabilities	[3]	$ 39	$ 44
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]		Other	Other
Finance lease liabilities	[4]	$ 46	$ 36
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]		Securities due within one year	Securities due within one year
Total lease liabilities - current		$ 85	$ 80
Operating lease liabilities	[5]	$ 514	$ 464
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]		Deferred Credits and Other Liabilities	Deferred Credits and Other Liabilities
Finance lease liabilities	[6]	$ 104	$ 112
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]		Other	Other
Total lease liabilities - noncurrent		$ 618	$ 576
Total lease liabilities		703	656
Virginia Electric and Power Company
Lessee Lease Disclosure [Line Items]
Operating lease assets	[1]	$ 294	$ 256
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]		Deferred Charges Regulatory Assets And Other Assets Noncurrent	Deferred Charges Regulatory Assets And Other Assets Noncurrent
Finance lease assets	[2]	$ 82	$ 71
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]		Property, plant and equipment	Property, plant and equipment
Total lease assets		$ 376	$ 327
Operating lease liabilities	[3]	$ 21	$ 25
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]		Other	Other
Finance lease liabilities	[4]	$ 17	$ 13
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]		Securities due within one year	Securities due within one year
Total lease liabilities - current		$ 38	$ 38
Operating lease liabilities	[5]	$ 273	$ 227
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]		Deferred Credits and Other Liabilities	Deferred Credits and Other Liabilities
Finance lease liabilities	[6]	$ 65	$ 57
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]		Other	Other
Total lease liabilities - noncurrent		$ 338	$ 284
Total lease liabilities		$ 376	$ 322
[1] Dominion Energy includes $ 394 million and $ 479 million at December 31, 2022 and 2021, respectively, in other deferred charges and other assets, with the remaining balance in noncurrent assets held for sale, in its Consolidated Balance Sheets. Virginia Power's balances are included in other deferred charges and other assets in its Consolidated Balance Sheets. Dominion Energy includes $ 127 million and $ 129 million at December 31, 2022 and 2021, respectively, in property, plant and equipment in its Consolidated Balance Sheets, net of $ 106 million and $ 77 million at December 31, 2022 and 2021, respectively, of accumulated amortization, with the remaining balance in noncurrent assets held for sale. Virginia Power's balances are included in property, plant and equipment in its Consolidated Balance Sheets, net of $ 33 million and $ 18 million at December 31, 2022 and 2021, respectively, of accumulated amortization. Dominion Energy includes $ 34 million and $ 38 million at December 31, 2022 and 2021, respectively, in other current liabilities, with the remaining balance in current liabilities held for sale, in its Consolidated Balance Sheets. Virginia Power's balances are in other current liabilities in its Consolidated Balance Sheets. Dominion Energy includes $ 42 million and $ 33 million at December 31, 2022 and 2021, respectively, in securities due within one year, with the remaining balance in current liabilities held for sale, in its Consolidated Balance Sheets. Virginia Power's balances are included in securities due within one year in its Consolidated Balance Sheets. Dominion Energy includes $ 494 million and $ 439 million at December 31, 2022 and 2021, respectively, in other deferred credits and other liabilities, with the remaining balance in noncurrent liabilities held for sale, in its Consolidated Balance Sheets. Virginia Power's balances are included in other deferred credits and other liabilities in its Consolidated Balance Sheets. Dominion Energy includes $ 91 million and $ 100 million at December 31, 2022 and 2021, respectively, in other long-term debt, with the remaining balance in noncurrent liabilities held for sale, in its Consolidated Balance Sheets. Virginia Power's balances are included in other long-term debt in its Consolidated Balance Sheets.

Leases (Lease Assets and Liab_2

Leases (Lease Assets and Liabilities Recorded in Consolidated Balance Sheets) (Parenthetical) (Detail) - USD ($) $ in Millions		Dec. 31, 2022	Dec. 31, 2021
Lessee Lease Disclosure [Line Items]
Operating lease assets	[1]	$ 415	$ 506
Finance lease assets, accumulated amortization		127	129
Operating lease liabilities	[2]	$ 39	$ 44
Operating Lease Liability Current Statement Of Financial Position [Extensible List]		Other Liabilities, Current	Other Liabilities, Current
Finance lease liabilities	[3]	$ 46	$ 36
Finance Lease Liability Current Statement Of Financial Position [Extensible List]		Long-Term Debt and Lease Obligation, Current	Long-Term Debt and Lease Obligation, Current
Operating lease liabilities	[4]	$ 514	$ 464
Operating Lease Liability Noncurrent Statement Of Financial Position [Extensible List]		Deferred Credits and Other Liabilities	Deferred Credits and Other Liabilities
Finance lease liabilities	[5]	$ 104	$ 112
Finance Lease Liability Noncurrent Statement Of Financial Position [Extensible List]		Other Liabilities, Noncurrent	Other Liabilities, Noncurrent
Non-Current Assets Held for Sale
Lessee Lease Disclosure [Line Items]
Finance lease assets, accumulated amortization		$ 106	$ 77
Other Deferred Charges And Other Assets
Lessee Lease Disclosure [Line Items]
Operating lease assets		394	479
Other Current Liabilities
Lessee Lease Disclosure [Line Items]
Operating lease liabilities		34	38
Securities Due Within One Year
Lessee Lease Disclosure [Line Items]
Finance lease liabilities		42	33
Other Deferred Credits and Other Liabilities
Lessee Lease Disclosure [Line Items]
Operating lease liabilities		494	439
Other Long-Term Debt
Lessee Lease Disclosure [Line Items]
Finance lease liabilities		91	100
Virginia Electric and Power Company
Lessee Lease Disclosure [Line Items]
Operating lease assets	[1]	294	256
Finance lease assets, accumulated amortization		33	18
Operating lease liabilities	[2]	$ 21	$ 25
Operating Lease Liability Current Statement Of Financial Position [Extensible List]		Other Liabilities, Current	Other Liabilities, Current
Finance lease liabilities	[3]	$ 17	$ 13
Finance Lease Liability Current Statement Of Financial Position [Extensible List]		Long-Term Debt and Lease Obligation, Current	Long-Term Debt and Lease Obligation, Current
Operating lease liabilities	[4]	$ 273	$ 227
Operating Lease Liability Noncurrent Statement Of Financial Position [Extensible List]		Deferred Credits and Other Liabilities	Deferred Credits and Other Liabilities
Finance lease liabilities	[5]	$ 65	$ 57
Finance Lease Liability Noncurrent Statement Of Financial Position [Extensible List]		Other Liabilities, Noncurrent	Other Liabilities, Noncurrent
Virginia Electric and Power Company | Other Deferred Charges And Other Assets
Lessee Lease Disclosure [Line Items]
Operating lease assets		$ 394	$ 479
Virginia Electric and Power Company | Other Current Liabilities
Lessee Lease Disclosure [Line Items]
Operating lease liabilities		34	38
Virginia Electric and Power Company | Securities Due Within One Year
Lessee Lease Disclosure [Line Items]
Finance lease liabilities		42	33
Virginia Electric and Power Company | Other Deferred Credits and Other Liabilities
Lessee Lease Disclosure [Line Items]
Operating lease liabilities		494	439
Virginia Electric and Power Company | Other Long-Term Debt
Lessee Lease Disclosure [Line Items]
Finance lease liabilities		$ 91	$ 100
[1] Dominion Energy includes $ 394 million and $ 479 million at December 31, 2022 and 2021, respectively, in other deferred charges and other assets, with the remaining balance in noncurrent assets held for sale, in its Consolidated Balance Sheets. Virginia Power's balances are included in other deferred charges and other assets in its Consolidated Balance Sheets. Dominion Energy includes $ 34 million and $ 38 million at December 31, 2022 and 2021, respectively, in other current liabilities, with the remaining balance in current liabilities held for sale, in its Consolidated Balance Sheets. Virginia Power's balances are in other current liabilities in its Consolidated Balance Sheets. Dominion Energy includes $ 42 million and $ 33 million at December 31, 2022 and 2021, respectively, in securities due within one year, with the remaining balance in current liabilities held for sale, in its Consolidated Balance Sheets. Virginia Power's balances are included in securities due within one year in its Consolidated Balance Sheets. Dominion Energy includes $ 494 million and $ 439 million at December 31, 2022 and 2021, respectively, in other deferred credits and other liabilities, with the remaining balance in noncurrent liabilities held for sale, in its Consolidated Balance Sheets. Virginia Power's balances are included in other deferred credits and other liabilities in its Consolidated Balance Sheets. Dominion Energy includes $ 91 million and $ 100 million at December 31, 2022 and 2021, respectively, in other long-term debt, with the remaining balance in noncurrent liabilities held for sale, in its Consolidated Balance Sheets. Virginia Power's balances are included in other long-term debt in its Consolidated Balance Sheets.

Leases (Narrative) (Detail)

Leases (Narrative) (Detail) - USD ($) $ in Millions	1 Months Ended	3 Months Ended	12 Months Ended
	Dec. 31, 2020	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Jul. 31, 2016
Leases Disclosure [Line Items]
Property, plant and equipment			$ 51,826	$ 48,901
Accumulated depreciation, depletion and amortization			23,352	22,595
Agreement with Lessor to Complete Construction and Lease Jones Act Compliant Offshore Wind Installation Vessel
Leases Disclosure [Line Items]
Requested cash draws from lessor to fund project costs			334
Required percentage payment for specific full recourse events	100%
Lease maturity term	2027-11
Lessor | Agreement with Lessor to Complete Construction and Lease Jones Act Compliant Offshore Wind Installation Vessel
Leases Disclosure [Line Items]
Amount of financing commitments to fund estimated project costs	$ 550				$ 550
Lessor | New Corporate Office | Agreement with Lessor to Construct and Lease Corporate Office Property
Leases Disclosure [Line Items]
Amount of financing commitments to fund estimated project costs						$ 465	$ 365
Leasing arrangement, charge				62
Leasing arrangement, charge after tax				46
Lease effective termination date		2021-04
Power Purchase Arrangement [Member]
Leases Disclosure [Line Items]
Property, plant and equipment			183	1,200
Accumulated depreciation, depletion and amortization			0	106
Rental revenue			$ 16	$ 168	$ 175
Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration]			Revenues	Revenues	Revenues
Depreciation expense			$ 34	$ 110	$ 102

Leases (Summary of Total Lease

Leases (Summary of Total Lease Cost) (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Finance lease cost:
Finance lease cost, Amortization	[1]	$ 41	$ 40	$ 33
Finance lease cost, Interest	[2]	3	(3)
Operating lease cost	[3]	53	66	68
Short-term lease cost	[4]	31	32	20
Variable lease cost		4	5	8
Total lease cost		132	140	129
Virginia Electric and Power Company
Finance lease cost:
Finance lease cost, Amortization	[1]	15	12	7
Finance lease cost, Interest	[2]	3	1	1
Operating lease cost	[3]	32	30	36
Short-term lease cost	[4]	21	19	12
Variable lease cost		1	1	4
Total lease cost		$ 72	$ 63	$ 60
[1] Dominion Energy includes $ 3 million, $ 3 million and $ 2 million for the years ended December 31, 2022, 2021 and 2020, respectively, in discontinued operations in its Consolidated Statements of Income. Dominion Energy includes $ 1 million for the year ended December 31, 2022 and less than $ 1 million for the years ended December 31, 2021 and 2020, respectively, in discontinued operations in its Consolidated Statements of Income. Dominion Energy includes $ 6 million, $ 8 million and $ 8 million for the years ended December 31, 2022, 2021 and 2020, respectively, in discontinued operations in its Consolidated Statements of Income. Dominion Energy includes $ 2 million, $ 2 million and $ 1 million for the years ended December 31, 2022, 2021 and 2020, respectively, in discontinued operations in its Consolidated Statements of Income.

Leases - (Summary of Total Leas

Leases - (Summary of Total Lease Cost) (Parenthetical) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Lessee Lease Disclosure [Line Items]
Finance lease cost, Amortization	[1]	$ 41	$ 40	$ 33
Finance lease cost, Interest	[2]	3	(3)
Operating lease cost	[3]	53	66	68
Short-term lease cost	[4]	31	32	20
Discontinued Operations
Lessee Lease Disclosure [Line Items]
Finance lease cost, Amortization		3	3	2
Finance lease cost, Interest		1	1
Operating lease cost		6	8	8
Short-term lease cost		$ 2	$ 2	$ 1
[1] Dominion Energy includes $ 3 million, $ 3 million and $ 2 million for the years ended December 31, 2022, 2021 and 2020, respectively, in discontinued operations in its Consolidated Statements of Income. Dominion Energy includes $ 1 million for the year ended December 31, 2022 and less than $ 1 million for the years ended December 31, 2021 and 2020, respectively, in discontinued operations in its Consolidated Statements of Income. Dominion Energy includes $ 6 million, $ 8 million and $ 8 million for the years ended December 31, 2022, 2021 and 2020, respectively, in discontinued operations in its Consolidated Statements of Income. Dominion Energy includes $ 2 million, $ 2 million and $ 1 million for the years ended December 31, 2022, 2021 and 2020, respectively, in discontinued operations in its Consolidated Statements of Income.

Leases (Cash Paid for Amounts I

Leases (Cash Paid for Amounts Included in Measurement of Lease Liabilities) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Lessee Lease Disclosure [Line Items]
Operating cash flows for finance leases	$ 3	$ (3)
Operating cash flows for operating leases	82	103	$ 96
Financing cash flows for finance leases	32	40	33
Virginia Electric and Power Company
Lessee Lease Disclosure [Line Items]
Operating cash flows for finance leases	3	1	1
Operating cash flows for operating leases	50	53	52
Financing cash flows for finance leases	$ 12	$ 12	$ 7

Leases (Weighted Average Remain

Leases (Weighted Average Remaining Lease Term and Weighted Discounted Rate for Finance and Operating Leases) (Detail)	Dec. 31, 2022	Dec. 31, 2021
Lessee Lease Disclosure [Line Items]
Weighted average remaining lease term - finance leases	4 years	5 years
Weighted average remaining lease term - operating leases	29 years	27 years
Weighted average discount rate - finance leases	5.77%	2.77%
Weighted average discount rate - operating leases	3.91%	3.96%
Virginia Electric and Power Company
Lessee Lease Disclosure [Line Items]
Weighted average remaining lease term - finance leases	6 years	6 years
Weighted average remaining lease term - operating leases	30 years	25 years
Weighted average discount rate - finance leases	6.12%	2.27%
Weighted average discount rate - operating leases	3.90%	4%

Leases (Scheduled Maturities of

Leases (Scheduled Maturities of Lease Liabilities) (Detail) $ in Millions	Dec. 31, 2022 USD ($)
Lessee Lease Disclosure [Line Items]
Maturity of Lease Liabilities, Operating, 2023	$ 44
Maturity of Lease Liabilities, Operating, 2024	36
Maturity of Lease Liabilities, Operating, 2025	30
Maturity of Lease Liabilities, Operating, 2026	27
Maturity of Lease Liabilities, Operating, 2027	25
Maturity of Lease Liabilities, Operating, After 2027	642
Maturity of Lease Liabilities, Operating, Total undiscounted lease payments	804
Present value adjustment, Operating	(251)
Present value of lease liabilities, Operating	553
Maturity of Lease Liabilities, Finance, 2023	52
Maturity of Lease Liabilities, Finance, 2024	45
Maturity of Lease Liabilities, Finance, 2025	25
Maturity of Lease Liabilities, Finance, 2026	20
Maturity of Lease Liabilities, Finance, 2027	14
Maturity of Lease Liabilities, Finance, After 2027	15
Maturity of Lease Liabilities, Finance, Total undiscounted lease payments	171
Present value adjustment, Finance	(21)
Present value of lease liabilities, Finance	150
Virginia Electric and Power Company
Lessee Lease Disclosure [Line Items]
Maturity of Lease Liabilities, Operating, 2023	23
Maturity of Lease Liabilities, Operating, 2024	19
Maturity of Lease Liabilities, Operating, 2025	15
Maturity of Lease Liabilities, Operating, 2026	12
Maturity of Lease Liabilities, Operating, 2027	10
Maturity of Lease Liabilities, Operating, After 2027	314
Maturity of Lease Liabilities, Operating, Total undiscounted lease payments	393
Present value adjustment, Operating	(99)
Present value of lease liabilities, Operating	294
Maturity of Lease Liabilities, Finance, 2023	21
Maturity of Lease Liabilities, Finance, 2024	20
Maturity of Lease Liabilities, Finance, 2025	17
Maturity of Lease Liabilities, Finance, 2026	14
Maturity of Lease Liabilities, Finance, 2027	11
Maturity of Lease Liabilities, Finance, After 2027	13
Maturity of Lease Liabilities, Finance, Total undiscounted lease payments	96
Present value adjustment, Finance	(14)
Present value of lease liabilities, Finance	$ 82

Variable Interest Entities - (N

Variable Interest Entities - (Narrative) (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Variable Interest Entity [Line Items]
Payables to affiliates	[1]	$ 1,697	$ 1,585
Virginia Electric and Power Company
Variable Interest Entity [Line Items]
Payables to affiliates		$ 826	567
Variable Interest Entity Not Primary Beneficiary | Distribution | Atlantic Coast Pipeline | Pipelines | Jointly Owned Natural Gas Pipeline
Variable Interest Entity [Line Items]
Initial membership interest percentage		53%
Variable Interest Entity Not Primary Beneficiary | Virginia Electric and Power Company | DES
Variable Interest Entity [Line Items]
Shared Services Purchased		$ 396	380	$ 349
Variable Interest Entity Not Primary Beneficiary | Virginia Electric and Power Company | DES | Related Party [Member]
Variable Interest Entity [Line Items]
Payables to affiliates		$ 28	$ 20
Variable Interest Entity Not Primary Beneficiary | Partnership Interest | Cove Point
Variable Interest Entity [Line Items]
Initial membership interest percentage		50%
[1] See Note 9 for amounts attributable to related parties.

Short-Term Debt and Credit Agre

Short-Term Debt and Credit Agreements (Narrative) (Detail) - USD ($)

1 Months Ended

12 Months Ended

Jan. 31, 2023

May 31, 2022

Apr. 30, 2022

Mar. 31, 2021

Dec. 31, 2022

Dec. 31, 2021

Feb. 28, 2023

Feb. 27, 2023

Nov. 30, 2022

Jul. 31, 2021

Jun. 30, 2021

Oct. 31, 2020

Nov. 30, 2017

Debt Instrument [Line Items]

Facility Limit

[1]

$ 6,000,000,000

$ 6,000,000,000

Short-term debt

$ 3,423,000,000

$ 2,314,000,000

Weighted-average percentage interest rates

4.73%

0.31%

Letters of credit outstanding, amount

[1]

$ 131,000,000

$ 202,000,000

Floating Rate Demand Notes

Debt Instrument [Line Items]

Short-term debt

$ 347,000,000

$ 431,000,000

Weighted-average percentage interest rates

4.24%

1.25%

Floating Rate Demand Notes | Shelf Registration for Sale of Demand Notes

Debt Instrument [Line Items]

Facility Limit

$ 3,000,000,000

Debt instrument, maximum principal outstanding amount

$ 1,000,000,000

Dominion Energy South Carolina Inc

Debt Instrument [Line Items]

Facility Limit

$ 500,000,000

Short-term indebtedness outstanding

$ 2,200,000,000

Debt, maturity month and year

2023-03

Questar Gas

Debt Instrument [Line Items]

Facility Limit

250,000,000

GENCO

Debt Instrument [Line Items]

Short-term indebtedness outstanding

$ 200,000,000

Debt, maturity month and year

2023-03

SBL Holdco

Debt Instrument [Line Items]

Facility Limit

$ 30,000,000

Dominion Solar Projects III, Inc

Debt Instrument [Line Items]

Facility Limit

25,000,000

Virginia Electric and Power Company

Debt Instrument [Line Items]

Facility Limit

[2]

6,000,000,000

6,000,000,000

Short-term debt

$ 941,000,000

$ 745,000,000

Weighted-average percentage interest rates

4.68%

0.26%

Letters of credit outstanding, amount

[2]

$ 140,000,000

$ 40,000,000

Revolving Credit Facility

Debt Instrument [Line Items]

Facility Limit

$ 6,000,000,000

Revolving Credit Facility | Virginia Electric and Power Company

Debt Instrument [Line Items]

Facility Limit

$ 3,000,000,000

Letter of Credit

Debt Instrument [Line Items]

Facility Limit

$ 2,000,000,000

Credit facility, amount borrowed

$ 0

Letter of Credit | Maximum

Debt Instrument [Line Items]

Letters of credit issued and outstanding

$ 1,000,000

Letter of Credit | Credit Facility, Maturing in June 2022

Debt Instrument [Line Items]

Facility Limit

$ 30,000,000

Credit facility, maturity date

Jun. 30, 2022

Line of credit facility, extended maturity date

Jun. 30, 2025

Credit facility, amount borrowed

$ 25,000,000

29,000,000

Letter of Credit | Amended And Restated Credit Facility [Member]

Debt Instrument [Line Items]

Credit facility, maturity date

Jun. 30, 2024

Letter of Credit | Virginia Electric and Power Company

Debt Instrument [Line Items]

Facility Limit

2,000,000,000

Letter of Credit | Virginia Electric and Power Company | Credit Facility, Maturing in January 2026

Debt Instrument [Line Items]

Facility Limit

$ 125,000,000

Credit facility, maturity date

Jan. 31, 2026

Term Loan Credit Agreement

Debt Instrument [Line Items]

Facility Limit

$ 1,300,000,000

Credit Facilities Maturing in December 2021 with 1 Year Automatic Renewals Through 2024 | DECP Holdings

Debt Instrument [Line Items]

Facility Limit

$ 110,000,000

Automatic renewal period

1 year

Letters of credit outstanding, amount

110,000,000

$ 110,000,000

Letters of credit borrowed, amount

$ 0

$ 0

364-Day Term Loan Facility

Debt Instrument [Line Items]

Facility Limit

$ 2,500,000,000

Credit facility, maturity date

Jan. 01, 2024

Credit facility, amount borrowed

$ 1,000,000,000

[1] This credit facility matures in June 2026, with the potential to be extended by the borrowers to June 2028, and can be used by the borrowers under the credit facility to support bank borrowings and the issuance of commercial paper, as well as to support up to a combined $ 2.0 billion of letters of credit. The full amount of the facility is available to Virginia Power, less any amounts outstanding to co-borrowers Dominion Energy, Questar Gas and DESC. The sub-limit for Virginia Power is set pursuant to the terms of the facility but can be changed at the option of the borrowers multiple times per year. At December 31, 2022, the sub-limit for Virginia Power was $ 1.75 billion. If Virginia Power has liquidity needs in excess of its sub-limit, the sub-limit may be changed or such needs may be satisfied through short-term intercompany borrowings from Dominion Energy. This credit facility matures in June 2026, with the potential to be extended by the borrowers to June 2028. The credit facility can be used to support bank borrowings and the issuance of commercial paper, as well as to support up to $ 2.0 billion (or the sub-limit, whichever is less) of letters of credit.

Short-Term Debt and Credit Ag_2

Short-Term Debt and Credit Agreements (Commercial Paper, Bank Loans and Letters of Credit Outstanding) (Detail) - USD ($)		Dec. 31, 2022	Dec. 31, 2021
Line of Credit Facility [Line Items]
Facility Limit	[1]	$ 6,000,000,000	$ 6,000,000,000
Outstanding Commercial Paper	[1],[2]	1,883,000,000	3,076,000,000
Outstanding Letters of Credit	[1]	131,000,000	202,000,000
Facility Capacity Available	[1]	3,986,000,000	2,722,000,000
Virginia Electric and Power Company
Line of Credit Facility [Line Items]
Facility Limit	[3]	6,000,000,000	6,000,000,000
Outstanding Commercial Paper	[3],[4]	941,000,000	745,000,000
Outstanding Letters of Credit	[3]	$ 140,000,000	$ 40,000,000
[1] This credit facility matures in June 2026, with the potential to be extended by the borrowers to June 2028, and can be used by the borrowers under the credit facility to support bank borrowings and the issuance of commercial paper, as well as to support up to a combined $ 2.0 billion of letters of credit. The weighted-average interest rates of the outstanding commercial paper supported by Dominion Energy’s credit facility was 4.73 % and 0.31 % at December 31, 2022 and 2021, respectively. The full amount of the facility is available to Virginia Power, less any amounts outstanding to co-borrowers Dominion Energy, Questar Gas and DESC. The sub-limit for Virginia Power is set pursuant to the terms of the facility but can be changed at the option of the borrowers multiple times per year. At December 31, 2022, the sub-limit for Virginia Power was $ 1.75 billion. If Virginia Power has liquidity needs in excess of its sub-limit, the sub-limit may be changed or such needs may be satisfied through short-term intercompany borrowings from Dominion Energy. This credit facility matures in June 2026, with the potential to be extended by the borrowers to June 2028. The credit facility can be used to support bank borrowings and the issuance of commercial paper, as well as to support up to $ 2.0 billion (or the sub-limit, whichever is less) of letters of credit. The weighted-average interest rates of the outstanding commercial paper supported by the credit facility was 4.68 % and 0.26 % at December 31, 2022 and 2021, respectively.

Short-Term Debt and Credit Ag_3

Short-Term Debt and Credit Agreements (Commercial Paper, Bank Loans and Letters of Credit Outstanding) (Parenthetical) (Detail) - USD ($)		Dec. 31, 2022	Dec. 31, 2021
Line of Credit Facility [Line Items]
Weighted-average percentage interest rates		4.73%	0.31%
Facility Limit	[1]	$ 6,000,000,000	$ 6,000,000,000
Virginia Electric and Power Company
Line of Credit Facility [Line Items]
Weighted-average percentage interest rates		4.68%	0.26%
Facility Limit	[2]	$ 6,000,000,000	$ 6,000,000,000
Letter of Credit
Line of Credit Facility [Line Items]
Facility Limit		2,000,000,000
Letter of Credit | Virginia Electric and Power Company
Line of Credit Facility [Line Items]
Facility Limit		2,000,000,000
Line of Credit | Virginia Electric and Power Company
Line of Credit Facility [Line Items]
Facility Limit		$ 1,750,000,000
[1] This credit facility matures in June 2026, with the potential to be extended by the borrowers to June 2028, and can be used by the borrowers under the credit facility to support bank borrowings and the issuance of commercial paper, as well as to support up to a combined $ 2.0 billion of letters of credit. The full amount of the facility is available to Virginia Power, less any amounts outstanding to co-borrowers Dominion Energy, Questar Gas and DESC. The sub-limit for Virginia Power is set pursuant to the terms of the facility but can be changed at the option of the borrowers multiple times per year. At December 31, 2022, the sub-limit for Virginia Power was $ 1.75 billion. If Virginia Power has liquidity needs in excess of its sub-limit, the sub-limit may be changed or such needs may be satisfied through short-term intercompany borrowings from Dominion Energy. This credit facility matures in June 2026, with the potential to be extended by the borrowers to June 2028. The credit facility can be used to support bank borrowings and the issuance of commercial paper, as well as to support up to $ 2.0 billion (or the sub-limit, whichever is less) of letters of credit.

Long-Term Debt (Total Long Term

Long-Term Debt (Total Long Term Debt) (Detail) - USD ($) $ in Millions		Dec. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Weighted-average percentage interest rates		4.73%	0.31%
Total principal		$ 37,522	$ 34,094
Securities due within one year	[1]	(2,848)	(805)
Unamortized discount, premium and debt issuances costs, net		(322)	(282)
Derivative restructuring	[2]	141	738
Finance leases		91	100
Total long-term debt		$ 34,584	33,847
Fair value hedge valuation	[3]		2
Sustainability Revolving Credit Agreement, variable rate, due 2024
Debt Instrument [Line Items]
Weighted-average percentage interest rates	[4],[5]	5.24%
Total principal	[5]	$ 450
4.82%, due 2042
Debt Instrument [Line Items]
Weighted-average percentage interest rates	[4],[6]	4.82%
Total principal	[6]	$ 308	314
Senior Notes | Variable rates, due 2023
Debt Instrument [Line Items]
Weighted-average percentage interest rates	[4]	5.30%
Total principal		$ 1,000	1,000
Senior Notes | 1.45% to 7.0%, due 2022 to 2052
Debt Instrument [Line Items]
Weighted-average percentage interest rates	[4],[7],[8]	4.01%
Total principal	[7],[8]	$ 12,476	11,238
Senior Notes | 2.30% to 8.875%, due 2022 to 2052
Debt Instrument [Line Items]
Total principal		$ 15,135	13,238
Junior Subordinated Debt | 3.071% due 2024
Debt Instrument [Line Items]
Weighted-average percentage interest rates	[4]	3.07%
Total principal		$ 700	700
Junior Subordinated Debt | 8.4% due 2031
Debt Instrument [Line Items]
Weighted-average percentage interest rates	[4]	8.40%
Total principal		$ 10	10
Enhanced Junior Subordinated Notes | 5.75% due 2054
Debt Instrument [Line Items]
Weighted-average percentage interest rates	[4]	5.75%
Total principal		$ 685	685
Tax-Exempt Financings | Tax-Exempt Financings, 0.75% to 1.90%, due 2032 to 2041
Debt Instrument [Line Items]
Total principal	[9]	$ 625	625
Tax-Exempt Financings | Variable Rate Due 2038
Debt Instrument [Line Items]
Weighted-average percentage interest rates	[4],[10]	3.70%
Total principal	[10]	$ 35	35
Tax-Exempt Financings | GENCO variable rate due 2038 [Member]
Debt Instrument [Line Items]
Weighted-average percentage interest rates	[4],[10]	3.70%
Total principal	[10]	$ 33	33
Tax-Exempt Financings | 3.625% and 4.00%, due 2028 and 2033
Debt Instrument [Line Items]
Weighted-average percentage interest rates	[4],[10]	3.90%
Total principal	[10]	$ 54	54
Tax-Exempt Financings | Other
Debt Instrument [Line Items]
Weighted-average percentage interest rates	[4],[10]	3.63%
Total principal	[10]	$ 1	1
Tax-Exempt Financings | Tax-Exempt Financing, 3.8% due 2033
Debt Instrument [Line Items]
Weighted-average percentage interest rates	[4]	3.80%
Total principal		$ 27	27
DECP Holdings | Term Loan, Variable Rate, Due 2024
Debt Instrument [Line Items]
Weighted-average percentage interest rates	[4],[11]	5.71%
Total principal	[11]	$ 2,349	2,500
DESC | First mortgage bonds, 2.30% to 6.625%, due 2028 to 2065
Debt Instrument [Line Items]
Weighted-average percentage interest rates	[4]	5.09%
Total principal		$ 3,634	$ 3,634
Virginia Electric and Power Company
Debt Instrument [Line Items]
Weighted-average percentage interest rates		4.68%	0.26%
Total principal		$ 15,760	$ 13,863
Securities due within one year	[1]	(700)	(300)
Unamortized discount, premium and debt issuances costs, net		(144)	(110)
Derivative restructuring	[2]		446
Finance leases		65	57
Total long-term debt		$ 14,981	13,956
Virginia Electric and Power Company | Senior Notes | 2.30% to 8.875%, due 2022 to 2052
Debt Instrument [Line Items]
Weighted-average percentage interest rates	[4]	3.99%
Total principal		$ 15,135	13,238
Virginia Electric and Power Company | Tax-Exempt Financings | Tax-Exempt Financings, 0.75% to 1.90%, due 2032 to 2041
Debt Instrument [Line Items]
Weighted-average percentage interest rates	[4],[9]	1.32%
Total principal	[9]	$ 625	$ 625
[1] Dominion Energy and Virginia Power's weighted-average rate for securities due within one year was 3.69 % and 2.75 %, respectively, as of December 31, 2022. Excludes $ 447 million at December 31, 2022 for both Dominion Energy and Virginia Power, representing the current portion which is presented within securities due within one year in the Companies’ Consolidated Balance Sheets. The Companies did not have any current derivative restructuring balances at December 31, 2021. Represents the valuation of certain fair value hedges associated with Dominion Energy’s fixed rate debt. Represents weighted-average coupon rates for debt outstanding as of December 31, 2022. This $ 900 million supplemental credit facility, entered in June 2021, offers a reduced interest rate margin with respect to borrowed amounts allocated to certain environmental sustainability or social investment initiatives. Proceeds of the supplemental credit facility also may be used for general corporate purposes, but such proceeds are not eligible for a reduced interest rate margin. In June 2021 and August 2021, Dominion Energy borrowed $ 250 million and $ 650 million respectively. The proceeds from these borrowings were used to support environmental sustainability and social investment initiatives ($ 250 million) and for general corporate purposes ($ 650 million). In November 2021 and December 2021, Dominion Energy repaid $ 650 million and $ 250 million, respectively, borrowed under this arrangement. In May 2022, Dominion Energy borrowed $ 900 million. The proceeds from these borrowings were used to support environmental sustainability and social investment initiatives ($ 450 million) and for general corporate purposes ($ 450 million). In June 2022, Dominion Energy repaid $ 450 million borrowed for general corporate purposes. Represents debt associated with Eagle Solar. The debt is nonrecourse to Dominion Energy and is secured by Eagle Solar’s interest in certain solar facilities. In 2022, Dominion Energy repurchased $ 263 million of senior notes with various interest rates and maturity dates. Gains related to the early redemption of the senior notes were $ 35 million ($ 26 million after-tax) reflected within interest and related charges in Dominion Energy’s Consolidated Statements of Income. Includes debt assumed by Dominion Energy from the merger of its former CNG subsidiary. These financings relate to certain pollution control equipment at Virginia Power’s generating facilities. Industrial revenue bonds totaling $ 68 million are secured by letters of credit that expire, subject to renewal, in the fourth quarter of 2023. The term loan amortizes over a 17-year period and matures in December 2024 with the potential to be extended to December 2026. The debt is secured by DECP Holdings’ noncontrolling interest in Cove Point.

Long-Term Debt (Total Long Te_2

Long-Term Debt (Total Long Term Debt) (Parenthetical) (Detail) - USD ($)		1 Months Ended	12 Months Ended
		Jun. 30, 2022	Dec. 31, 2022	Dec. 31, 2021	Aug. 31, 2022	Aug. 31, 2021	Jul. 31, 2016
Debt Instrument [Line Items]
Debt repurchased value			$ 263,000,000		$ 154,000,000	$ 39,000,000
Aggregate outstanding principal			$ 37,522,000,000	$ 34,094,000,000
Weighted-average percentage interest rates			4.73%	0.31%
Derivative restructuring current			$ 447,000,000	$ 0
Interest and Related Charges
Debt Instrument [Line Items]
Gain on early redemption of senior notes			35,000,000
Gain on early redemption of senior notes, after-tax			26,000,000
Sustainability Revolving Credit Agreement | June Twenty Twenty One
Debt Instrument [Line Items]
Debt, amount redeemed				250,000,000
Sustainability Revolving Credit Agreement | August Twenty Twenty One
Debt Instrument [Line Items]
Debt, amount redeemed				650,000,000
Sustainability Revolving Credit Agreement | November Twenty Twenty One
Debt Instrument [Line Items]
Repayments of borrowings				650,000,000
Sustainability Revolving Credit Agreement | December Twenty Twenty One
Debt Instrument [Line Items]
Repayments of borrowings				250,000,000
Sustainability Revolving Credit Agreement | May Twenty Twenty Two
Debt Instrument [Line Items]
Debt, amount redeemed			900,000,000
Junior Subordinated Debt
Debt Instrument [Line Items]
Interest Rate							5.25%
Debt instrument, face amount							$ 800,000,000
Environmental Sustainability And Social Investment Initiatives
Debt Instrument [Line Items]
Proceeds from borrowings				250,000,000
General Corporate Purposes
Debt Instrument [Line Items]
Proceeds from borrowings				650,000,000
Virginia Electric and Power Company
Debt Instrument [Line Items]
Aggregate outstanding principal			$ 15,760,000,000	$ 13,863,000,000
Weighted-average percentage interest rates			4.68%	0.26%
Dominion Energy | Sustainability Revolving Credit Agreement
Debt Instrument [Line Items]
Debt instrument, face amount			$ 900,000,000
Dominion Energy | Environmental Sustainability And Social Investment Initiatives | Sustainability Revolving Credit Agreement
Debt Instrument [Line Items]
Proceeds from borrowings			450,000,000
Dominion Energy | General Corporate Purposes | Sustainability Revolving Credit Agreement
Debt Instrument [Line Items]
Proceeds from borrowings			450,000,000
Repayments of borrowings		$ 450,000,000
1.45% to 7.0%, due 2022 to 2052 | Senior Notes
Debt Instrument [Line Items]
Aggregate outstanding principal	[1],[2]		$ 12,476,000,000	$ 11,238,000,000
Weighted-average percentage interest rates	[1],[2],[3]		4.01%
1.45% to 7.0%, due 2022 to 2052 | Minimum | Senior Notes
Debt Instrument [Line Items]
Interest Rate			1.45%
1.45% to 7.0%, due 2022 to 2052 | Maximum | Senior Notes
Debt Instrument [Line Items]
Interest Rate			7%
3.071% due 2024 | Junior Subordinated Debt
Debt Instrument [Line Items]
Interest Rate			3.071%
Aggregate outstanding principal			$ 700,000,000	700,000,000
Weighted-average percentage interest rates	[3]		3.07%
8.4% due 2031 | Junior Subordinated Debt
Debt Instrument [Line Items]
Interest Rate			8.40%
Aggregate outstanding principal			$ 10,000,000	10,000,000
Weighted-average percentage interest rates	[3]		8.40%
5.75% due 2054 | Enhanced Junior Subordinated Notes
Debt Instrument [Line Items]
Interest Rate			5.75%
Aggregate outstanding principal			$ 685,000,000	685,000,000
Weighted-average percentage interest rates	[3]		5.75%
Unsecured Senior Notes, 2.30% to 8.875%, due 2022 to 2052 | Senior Notes
Debt Instrument [Line Items]
Aggregate outstanding principal			$ 15,135,000,000	13,238,000,000
Unsecured Senior Notes, 2.30% to 8.875%, due 2022 to 2052 | Virginia Electric and Power Company | Senior Notes
Debt Instrument [Line Items]
Aggregate outstanding principal			$ 15,135,000,000	13,238,000,000
Weighted-average percentage interest rates	[3]		3.99%
Unsecured Senior Notes, 2.30% to 8.875%, due 2022 to 2052 | Minimum | Virginia Electric and Power Company
Debt Instrument [Line Items]
Interest Rate			2.30%
Unsecured Senior Notes, 2.30% to 8.875%, due 2022 to 2052 | Maximum | Virginia Electric and Power Company
Debt Instrument [Line Items]
Interest Rate			8.875%
Tax-Exempt Financings, 0.75% to 1.90%, due 2032 to 2041 | Tax-Exempt Financings
Debt Instrument [Line Items]
Aggregate outstanding principal	[4]		$ 625,000,000	625,000,000
Tax-Exempt Financings, 0.75% to 1.90%, due 2032 to 2041 | Virginia Electric and Power Company | Tax-Exempt Financings
Debt Instrument [Line Items]
Aggregate outstanding principal	[4]		$ 625,000,000	625,000,000
Weighted-average percentage interest rates	[3],[4]		1.32%
Tax-Exempt Financings, 0.75% to 1.90%, due 2032 to 2041 | Minimum | Virginia Electric and Power Company
Debt Instrument [Line Items]
Interest Rate			0.75%
Tax-Exempt Financings, 0.75% to 1.90%, due 2032 to 2041 | Maximum | Virginia Electric and Power Company
Debt Instrument [Line Items]
Interest Rate			1.90%
First mortgage bonds, 2.30% to 6.625%, due 2028 to 2065 | Minimum | DESC
Debt Instrument [Line Items]
Interest Rate			2.30%
First mortgage bonds, 2.30% to 6.625%, due 2028 to 2065 | Maximum | DESC
Debt Instrument [Line Items]
Interest Rate			6.625%
3.625% and 4.00%, due 2028 and 2033 | Tax-Exempt Financings
Debt Instrument [Line Items]
Aggregate outstanding principal	[5]		$ 54,000,000	54,000,000
Weighted-average percentage interest rates	[3],[5]		3.90%
3.625% and 4.00%, due 2028 and 2033 | Minimum | Tax-Exempt Financings
Debt Instrument [Line Items]
Interest Rate			3.625%
3.625% and 4.00%, due 2028 and 2033 | Maximum | Tax-Exempt Financings
Debt Instrument [Line Items]
Interest Rate			4%
4.82%, due 2042
Debt Instrument [Line Items]
Interest Rate			4.82%
Aggregate outstanding principal	[6]		$ 308,000,000	314,000,000
Weighted-average percentage interest rates	[3],[6]		4.82%
Tax-Exempt Financing, 3.8% due 2033
Debt Instrument [Line Items]
Interest Rate			3.80%
Tax-Exempt Financing, 3.8% due 2033 | Tax-Exempt Financings
Debt Instrument [Line Items]
Aggregate outstanding principal			$ 27,000,000	$ 27,000,000
Weighted-average percentage interest rates	[3]		3.80%
Industrial Revenue Bonds
Debt Instrument [Line Items]
Aggregate outstanding principal			$ 68,000,000
Long term debt due within one year | Virginia Electric and Power Company
Debt Instrument [Line Items]
Weighted-average percentage interest rates			2.75%
Long term debt due within one year | Dominion Energy
Debt Instrument [Line Items]
Weighted-average percentage interest rates			3.69%
[1] In 2022, Dominion Energy repurchased $ 263 million of senior notes with various interest rates and maturity dates. Gains related to the early redemption of the senior notes were $ 35 million ($ 26 million after-tax) reflected within interest and related charges in Dominion Energy’s Consolidated Statements of Income. Includes debt assumed by Dominion Energy from the merger of its former CNG subsidiary. Represents weighted-average coupon rates for debt outstanding as of December 31, 2022. These financings relate to certain pollution control equipment at Virginia Power’s generating facilities. Industrial revenue bonds totaling $ 68 million are secured by letters of credit that expire, subject to renewal, in the fourth quarter of 2023. Represents debt associated with Eagle Solar. The debt is nonrecourse to Dominion Energy and is secured by Eagle Solar’s interest in certain solar facilities.

Long-Term Debt (Based on Stated

Long-Term Debt (Based on Stated Maturity Dates Rather than Early Redemption Dates that Could be Elected by Instrument Holders) (Detail) $ in Millions	Dec. 31, 2022 USD ($)
Debt Instrument [Line Items]
2023	$ 2,851
2024	4,046
2025	1,519
2026	2,140
2027	1,804
Thereafter	25,162
Total	$ 37,522
Weighted- average coupon, 2023	3.69%
Weighted- average coupon, 2024	4.81%
Weighted- average coupon, 2025	3.01%
Weighted- average coupon, 2026	2.84%
Weighted- average coupon, 2027	3.74%
Weighted- average coupon, Thereafter	4.34%
Sustainability Revolving Credit Agreement
Debt Instrument [Line Items]
2024	$ 450
Total	450
Term loans
Debt Instrument [Line Items]
2023	134
2024	2,215
Total	2,349
First mortgage bonds
Debt Instrument [Line Items]
Thereafter	3,634
Total	3,634
Unsecured senior notes
Debt Instrument [Line Items]
2023	2,700
2024	650
2025	1,500
2026	2,120
2027	1,783
Thereafter	19,859
Total	28,612
Secured senior notes
Debt Instrument [Line Items]
2023	17
2024	31
2025	19
2026	20
2027	21
Thereafter	200
Total	308
Tax-exempt financings
Debt Instrument [Line Items]
Thereafter	774
Total	774
Unsecured junior subordinated notes payable to affiliated trusts
Debt Instrument [Line Items]
Thereafter	10
Total	10
Unsecured junior subordinated notes
Debt Instrument [Line Items]
2024	700
Total	700
Enhanced Junior Subordinated Notes
Debt Instrument [Line Items]
Thereafter	685
Total	685
Virginia Electric and Power Company
Debt Instrument [Line Items]
2023	700
2024	350
2025	350
2026	1,150
2027	1,350
Thereafter	11,860
Total	$ 15,760
Weighted- average coupon, 2023	2.75%
Weighted- average coupon, 2024	3.45%
Weighted- average coupon, 2025	3.10%
Weighted- average coupon, 2026	3.08%
Weighted- average coupon, 2027	3.61%
Weighted- average coupon, Thereafter	4.10%
Virginia Electric and Power Company | Unsecured senior notes
Debt Instrument [Line Items]
2023	$ 700
2024	350
2025	350
2026	1,150
2027	1,350
Thereafter	11,235
Total	15,135
Virginia Electric and Power Company | Tax-exempt financings
Debt Instrument [Line Items]
Thereafter	625
Total	$ 625

Long-Term Debt (Narrative) (Det

Long-Term Debt (Narrative) (Detail) - USD ($)	1 Months Ended			12 Months Ended
	Aug. 31, 2021	Aug. 31, 2020	Jun. 30, 2020	Dec. 31, 2022	Aug. 31, 2022	Dec. 31, 2021	Jul. 31, 2016	Oct. 31, 2014
Debt Instrument [Line Items]
Debt, amount redeemed	$ 39,000,000			$ 263,000,000	$ 154,000,000
Period of deferral				10 years
Other long-term debt				$ 232,000,000		$ 838,000,000
Interest Rate Swap
Debt Instrument [Line Items]
Derivative notional value			$ 2,000,000,000
Derivative maturity month and year			2024-12
Other long-term debt			$ 326,000,000
Derivative imputed interest rate			1.19%
Interest Rate Swap | Virginia Power
Debt Instrument [Line Items]
Derivative notional value		$ 900,000,000
Derivative maturity month and year		2023-12
Other long-term debt		$ 443,000,000
Derivative imputed interest rate		0.34%
Junior Subordinated Debt
Debt Instrument [Line Items]
Interest rate percentage							5.25%
Debt instrument, face amount							$ 800,000,000
October 2014 Hybrids | Junior Subordinated Debt
Debt Instrument [Line Items]
Junior subordinated notes								$ 685,000,000
Interest rate percentage								5.75%
July2016 Hybrids | Junior Subordinated Debt
Debt Instrument [Line Items]
Debt, amount redeemed	800,000,000
Expenses related to early redemption of hybrids	$ 23,000,000
Debt instrument maturity year	2076

Preferred Stock (Narrative) (De

Preferred Stock (Narrative) (Detail) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended				3 Months Ended	12 Months Ended
	Sep. 01, 2022	May 31, 2022	Dec. 31, 2021	Sep. 30, 2020	Dec. 31, 2019	Aug. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Apr. 15, 2027	Dec. 15, 2024	Sep. 30, 2022	Aug. 31, 2021	Jun. 30, 2019	Jun. 14, 2019
Class of Stock [Line Items]
Preferred stock shares authorized							20,000,000
Total Preferred Stock			$ 1,783				$ 1,783	$ 1,783
Stock repurchased, shares				4,100,000
Debt repurchased value						$ 154	263						$ 39
Dividend stock							$ 93	$ 68	$ 65
Common Stock
Class of Stock [Line Items]
Stock repurchased, shares							0	0	38,900,000
2019 Series A Corporate Units
Class of Stock [Line Items]
Principal amount corporate units															$ 1,600
Percentage of interest in undivided beneficial ownership														10%
2019 Series A Corporate Units | Common Stock
Class of Stock [Line Items]
Purchase price to be paid under stock purchase contracts															$ 100
Series A Preferred Stock
Class of Stock [Line Items]
Reclassifications of permanent to mezzanine equity								$ 1,600
Conversion of stock, description							Series A Preferred Stock be settled, at Dominion Energy’s election, either entirely in cash or in cash up to the first $1,000 per share and in shares of Dominion Energy common stock, cash or any combination thereof for any amounts in excess of $1,000 per share
Debt repurchased value												$ 1,600
Series A Preferred Stock | 2019 Series A Corporate Units
Class of Stock [Line Items]
Dividend rate percentage		1.75%				1.75%
Preferred stock dividend rate increase percentage	6.75%
Stock repurchased, shares		1,600,000
Series B Preferred Stock
Class of Stock [Line Items]
Preferred stock, redemption price per share					$ 1,020
Series B Preferred Stock | Forecast
Class of Stock [Line Items]
Preferred stock, redemption price per share											$ 1,000
Series C Preferred Stock
Class of Stock [Line Items]
Preferred stock, redemption price per share			$ 1,020					$ 1,020
Series C Preferred Stock | Forecast
Class of Stock [Line Items]
Preferred stock, redemption price per share										$ 1,000
Dominion Energy
Class of Stock [Line Items]
Preferred stock shares issued			3,400,000				1,800,000	3,400,000
Preferred stock shares outstanding			3,400,000				1,800,000	3,400,000
Dominion Energy | Series A Preferred Stock
Class of Stock [Line Items]
Preferred stock shares issued			1,600,000					1,600,000
Preferred stock shares outstanding			1,600,000					1,600,000
Dominion Energy | Series B Preferred Stock
Class of Stock [Line Items]
Preferred stock shares issued			800,000		800,000		800,000	800,000
Preferred stock shares outstanding			800,000				800,000	800,000
Total Preferred Stock					$ 791
Issuance of costs					9
Preferred stock liquidation value					$ 1,000
Dividend rate percentage					4.65%		2.993%
Dividend stock							$ 37	$ 37	$ 37
Dividends per share							$ 46.5	$ 46.5	$ 46.5
Dominion Energy | Series C Preferred Stock
Class of Stock [Line Items]
Preferred stock shares issued			1,000,000				1,000,000	1,000,000
Preferred stock shares outstanding			1,000,000				1,000,000	1,000,000
Issuance of costs			$ 8
Preferred stock liquidation value			$ 1,000					$ 1,000
Dividend rate percentage			4.35%				3.195%
Dividend stock							$ 44	$ 3
Dividends per share							$ 43.5	$ 2.6583
Preferred stock shares issued to public			750,000
Preferred stock value issued to public			$ 742
Issuance of shares to qualified benefit pension plan			250,000
Defined Benefit Pension plans			$ 250
DESC
Class of Stock [Line Items]
Preferred stock shares authorized							20,000,000
SCANA
Class of Stock [Line Items]
Preferred Stock Held By SCANA			1,000				1,000	1,000
Virginia Electric and Power Company
Class of Stock [Line Items]
Preferred stock shares authorized			10,000,000					10,000,000
Preferred stock shares issued			0				0	0
Preferred stock shares outstanding			0				0	0
Liquidation preference			$ 100					$ 100

Preferred Stock (Schedule of Eq

Preferred Stock (Schedule of Equity Units) (Detail) - USD ($) shares in Millions, $ in Millions			12 Months Ended
		Jun. 14, 2019	Dec. 31, 2021	Dec. 31, 2022
Capital Unit [Line Items]
Total Preferred Stock			$ 1,783	$ 1,783
Stock Purchase Contract Liability			$ 44
Preferred Stock
Capital Unit [Line Items]
Units Issued			1
Preferred Stock | 2019 Series A Corporate Units
Capital Unit [Line Items]
Units Issued		16
Total Net Proceeds	[1]	$ 1,582
Total Preferred Stock	[2]	$ 1,610
Cumulative Dividend Rate		1.75%
Stock Purchase Contract Annual Rate		5.50%
Stock Purchase Contract Liability	[3]	$ 250
Stock Purchase Contract Settlement Date		Jun. 01, 2022
[1] Issuance costs of $ 28 million were recorded as a reduction to preferred stock ($ 14 million) and common stock ($ 14 million). In connection with the reclassification of the Series A Preferred Stock to mezzanine equity in 2021, the issuance costs originally recognized as a reduction to preferred stock were reclassified to common stock. Dominion Energy recorded dividends of $ 12 million ($ 7.292 per share), $ 28 million ($ 17.50 per share) and $ 28 million ($ 17.50 per share) for the years ended December 31, 2022, 2021 and 2020, respectively. In addition, Dominion Energy recorded interest expense of $ 7 million on the Series A Preferred Stock for the year ended December 31, 2022, following the reclassification of these shares to a mandatorily redeemable liability effective June 2022 as discussed above. Payments of $ 44 million, $ 85 million and $ 83 million were made in 2022, 2021 and 2020, respectively. The stock purchase contract liability was $ 44 million at December 31, 2021.

Preferred Stock (Schedule of _2

Preferred Stock (Schedule of Equity Units) (Parenthetical) (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Capital Unit [Line Items]
Issuance costs				$ 28
Corporate units stock purchase contract liability payments	$ 44	$ 85	$ 83
Stock Purchase Contract Liability		44
Series A Preferred Stock
Capital Unit [Line Items]
Interest expense	7
Preferred Stock
Capital Unit [Line Items]
Issuance costs				14
Recorded dividend	$ 12	$ 28	$ 28
Dividends per share	$ 7.292	$ 17.5	$ 17.5
Common Stock
Capital Unit [Line Items]
Issuance costs				$ 14

Equity (Narrative) (Detail)

Equity (Narrative) (Detail)	1 Months Ended												3 Months Ended		12 Months Ended
	Dec. 31, 2022 USD ($) shares	Jun. 30, 2022 USD ($) shares	May 31, 2022 USD ($) shares	Dec. 31, 2021 USD ($)	Nov. 30, 2021 $ / shares shares	Aug. 31, 2021 USD ($) shares	Jul. 31, 2021 USD ($) shares	Dec. 31, 2020 USD ($) shares	Nov. 30, 2020 USD ($) shares	Sep. 30, 2020 USD ($) Agreement shares	Aug. 31, 2020 USD ($)	Mar. 31, 2020 USD ($) shares	Dec. 31, 2020 USD ($) shares	Sep. 30, 2020 USD ($) shares	Dec. 31, 2022 USD ($) shares	Dec. 31, 2021 USD ($) shares	Dec. 31, 2020 USD ($) shares	Jul. 31, 2020 USD ($)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Issuance of common stock															$ 1,866,000,000	$ 192,000,000	$ 159,000,000
Issuance of common stock value															1,969,000,000	1,332,000,000	481,000,000
Stock repurchased, shares | shares										4,100,000
Stock repurchased, value										$ 323,000,000							3,080,000,000
Number of prepaid accelerated share repurchase agreements | Agreement										2
Accelerated share repurchase, payments								$ 400,000,000		$ 1,500,000,000			$ 400,000,000	$ 1,500,000,000			$ 400,000,000
Accelerated share repurchase, cash paid for number of shares exchange | shares								5,000,000		17,200,000			5,000,000	17,200,000			5,000,000
Decrease in common stock								$ 400,000,000	$ 1,500,000,000
Common stock worth based on closing Price								$ 400,000,000		$ 1,500,000,000			$ 400,000,000	$ 1,500,000,000			$ 400,000,000
Accelerated share repurchase, additional shares delivered under terms of the agreement | shares								300,000	1,400,000				300,000				300,000
Compensation cost related to stock-based compensation															36,000,000	42,000,000	$ 64,000,000
Tax benefit from stock awards and stock options exercised															$ 7,000,000	9,000,000	16,000,000
Vesting period															3 years
Cash Based Performance Grant | Officer
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Cash-based performance grants minimum percentage															0%
Cash-based performance grants maximum percentage															200%
February2019 Cash Based Performance Grant | Officer | Grant Date Two
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Targeted amount of the grant				$ 6,000,000												6,000,000
February 2020 Cash Based Performance Grant | Officer | Grant Date Three
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Targeted amount of the grant	$ 4,000,000														$ 4,000,000
February 2021 Cash Based Performance Grant | Officer | Grant Date Three
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Targeted amount of the grant	11,000,000														11,000,000
Liability accrued for award	4,000,000														4,000,000
February 2022 Cash Based Performance Grant | Officer | Grant Date Three
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Targeted amount of the grant	17,000,000														17,000,000
Liability accrued for award	$ 3,000,000														$ 3,000,000
Stock Based Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares were available for future grants | shares	18,000,000														18,000,000
Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation cost related to nonvested awards	$ 58,000,000														$ 58,000,000
Fair value of restricted stock awards that vested															$ 31,000,000	$ 37,000,000	$ 35,000,000
Cove Point | GT&S Transaction
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Controlling interest sold									25%
Reversal of noncontrolling interest held by noncontrolling owners									$ 1,400,000,000
Cove Point | BHE | GT&S Transaction
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Ownership percentage									50%
S B L Holdco L L C | Nonregulated Solar Projects
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Controlling interest sold				67%
Four Brothers And Three Cedars
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Controlling interest sold				50%
Maximum | Stock Based Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Maximum term of stock based awards															8 years
Weighted Average | Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected weighted-average period recognized for the unrecognized compensation cost															2 years
Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Issuance of common stock (in shares) | shares		400,000	900,000			600,000	1,400,000			4,100,000					25,000,000	4,000,000	7,000,000
Issuance of common stock value		$ 30,000,000	$ 72,000,000			$ 45,000,000	$ 104,000,000								$ 1,969,000,000	$ 340,000,000	$ 481,000,000
Stock repurchased, shares | shares															0	0	38,900,000
Stock repurchased, value																	$ 3,080,000,000
Stock repurchase program, authorized amount									$ 1,000,000,000									$ 3,000,000,000
Common Stock | Open Market Agreement
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock repurchased, shares | shares													3,700,000	7,200,000
Stock repurchased, value													$ 295,000,000	$ 562,000,000
2019 Series A Corporate Units | Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Issuance of common stock		$ 1,600,000,000
Issuance of common stock (in shares) | shares		19,400,000
Dominion Energy Direct
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Issuance of common stock															$ 179,000,000	$ 192,000,000	$ 159,000,000
Issuance of common stock (in shares) | shares															2,400,000	2,600,000	2,100,000
Various Programs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Issuance of common stock															$ 2,000,000,000	$ 340,000,000	$ 481,000,000,000
Issuance of common stock (in shares) | shares															25,000,000	4,000,000	7,000,000
Sales Agency Agreements to Effect Sales Under At-the-market Program
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Issuance of common stock (in shares) | shares												0
Sale of stock authorized amount												$ 500,000,000
Sales Agency Agreements to Effect Sales Under At-the-market Program | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Sale of stock authorized amount											$ 1,000,000,000
Forward Sale Agreements
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Issuance of common stock	$ 78,000,000
Forward sale agreements, number of shares of common stock to be settled | shares					1,100,000
Initial forward price of share | $ / shares					$ 74.66

Equity (Schedule of Changes in

Equity (Schedule of Changes in AOCI Net of Tax and Reclassifications out of AOCI by Component) (Detail) - USD ($) $ in Millions			1 Months Ended	3 Months Ended								12 Months Ended
		Nov. 30, 2020	Dec. 31, 2021	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance							$ 27,308					$ 27,308
Interest and related charges												1,002	$ 1,255	$ 1,339
Income before income tax expense												257	218	175
Income tax expense		$ (336)	$ (173)									148	(239)	59
Net Income From Continuing Operations Including Noncontrolling Interests				$ (239)	$ 626	$ (665)	300	$ 628	$ 496	$ 140	$ 693	22	1,957	784
Total other comprehensive income (loss)												(114)	259	76
Ending balance			27,308	27,881				27,308				27,881	27,308
Virginia Electric and Power Company
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance							15,980				14,557	15,980	14,557	13,989
Interest and related charges	[1]											642	534	516
Income before income tax expense												1,406	2,109	1,250
Income tax expense												(191)	(397)	(229)
Total other comprehensive income (loss)												50	11	(23)
Ending balance			15,980	17,245				15,980				17,245	15,980	14,557
Commodity
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance											(1)		(1)
Total other comprehensive income (loss)													1
Ending balance														(1)
Commodity | Amounts reclassified from AOCI
Accumulated Other Comprehensive Income Loss [Line Items]
Purchased gas													1
Income before income tax expense													1
Net Income From Continuing Operations Including Noncontrolling Interests													1
Interest rate
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance							(358)				(418)	(358)	(418)
Other comprehensive income before reclassifications: gains (losses)												67
Total other comprehensive income (loss)												109	60
Ending balance			(358)	(249)				(358)				(249)	(358)	(418)
Interest rate | Virginia Electric and Power Company
Accumulated Other Comprehensive Income Loss [Line Items]
Other comprehensive income before reclassifications: gains (losses)												60
Total other comprehensive income (loss)												61
Interest rate | Amounts reclassified from AOCI
Accumulated Other Comprehensive Income Loss [Line Items]
Other comprehensive income before reclassifications: gains (losses)													15
Interest and related charges												57	60
Income before income tax expense												57	60
Income tax expense												(15)	(15)
Net Income From Continuing Operations Including Noncontrolling Interests												42	45
Interest rate | Amounts reclassified from AOCI | Virginia Electric and Power Company
Accumulated Other Comprehensive Income Loss [Line Items]
Interest and related charges												2
Income before income tax expense												2
Income tax expense												1
Net Income From Continuing Operations Including Noncontrolling Interests												1
Total Derivative-Hedging Activities
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	[2]						(358)				(419)	(358)	(419)
Other comprehensive income before reclassifications: gains (losses)	[2]											67
Total other comprehensive income (loss)	[2]											109	61
Ending balance	[2]		(358)	(249)				(358)				(249)	(358)	(419)
Total Derivative-Hedging Activities | Virginia Electric and Power Company
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	[3]						(45)				(60)	(45)	(60)
Other comprehensive income before reclassifications: gains (losses)	[3]											60	13
Total other comprehensive income (loss)	[3]											61	15
Ending balance	[3]		(45)	16				(45)				16	(45)	(60)
Total Derivative-Hedging Activities | Amounts reclassified from AOCI
Accumulated Other Comprehensive Income Loss [Line Items]
Other comprehensive income before reclassifications: gains (losses)	[2]												15
Purchased gas	[2]												1
Interest and related charges	[2]											57	60
Income before income tax expense	[2]											57	61
Income tax expense	[2]											(15)	(15)
Net Income From Continuing Operations Including Noncontrolling Interests	[2]											42	46
Total Derivative-Hedging Activities | Amounts reclassified from AOCI | Virginia Electric and Power Company
Accumulated Other Comprehensive Income Loss [Line Items]
Interest and related charges	[3]											2	3
Income before income tax expense	[3]											2	3
Income tax expense	[3]											1	1
Net Income From Continuing Operations Including Noncontrolling Interests	[3]											1	2
Investment Securities
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	[4]						37				62	37	62
Other comprehensive income before reclassifications: gains (losses)	[4]											(100)
Total other comprehensive income (loss)	[4]											(81)	(25)
Ending balance	[4]		37	44				37				44	37	62
Investment Securities | Virginia Electric and Power Company
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	[5]						4				8	4	8
Other comprehensive income before reclassifications: gains (losses)	[5]											(11)	(2)
Total other comprehensive income (loss)	[5]											(11)	(4)
Ending balance	[5]		4	7				4				7	4	8
Investment Securities | Amounts reclassified from AOCI
Accumulated Other Comprehensive Income Loss [Line Items]
Other comprehensive income before reclassifications: gains (losses)	[4]												(7)
Other income	[4]											25	(23)
Income before income tax expense	[4]											25	(23)
Income tax expense	[4]											(6)	5
Net Income From Continuing Operations Including Noncontrolling Interests	[4]											19	(18)
Investment Securities | Amounts reclassified from AOCI | Virginia Electric and Power Company
Accumulated Other Comprehensive Income Loss [Line Items]
Other income	[5]												(3)
Income before income tax expense	[5]												(3)
Income tax expense	[5]												(1)
Net Income From Continuing Operations Including Noncontrolling Interests	[5]												(2)
Pension and Other Postretirement Benefit Costs
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	[6]						(1,133)				(1,359)	(1,133)	(1,359)
Other comprehensive income before reclassifications: gains (losses)	[6]											(218)
Total other comprehensive income (loss)	[6]											(143)	226
Ending balance	[6]		(1,133)	(1,276)				(1,133)				(1,276)	(1,133)	(1,359)
Pension and Other Postretirement Benefit Costs | Amounts reclassified from AOCI
Accumulated Other Comprehensive Income Loss [Line Items]
Other comprehensive income before reclassifications: gains (losses)	[6]												144
Other income	[6]											102	111
Income before income tax expense	[6]											102	111
Income tax expense	[6]											(27)	(29)
Net Income From Continuing Operations Including Noncontrolling Interests	[6]											75	82
Equity Method Investees
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	[7]						(4)				(1)	(4)	(1)
Other comprehensive income before reclassifications: gains (losses)	[7]											1
Total other comprehensive income (loss)	[7]											1	(3)
Ending balance	[7]		(4)	(3)				(4)				(3)	(4)	(1)
Equity Method Investees | Amounts reclassified from AOCI
Accumulated Other Comprehensive Income Loss [Line Items]
Other comprehensive income before reclassifications: gains (losses)	[7]												(3)
AOCI
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance							(1,458)				(1,717)	(1,458)	(1,717)
Other comprehensive income before reclassifications: gains (losses)												(250)
Total other comprehensive income (loss)												(114)	259	76
Ending balance			(1,458)	(1,572)				(1,458)				(1,572)	(1,458)	(1,717)
AOCI | Virginia Electric and Power Company
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance							(41)				(52)	(41)	(52)	(29)
Other comprehensive income before reclassifications: gains (losses)												49	11
Total other comprehensive income (loss)												50	11	(23)
Ending balance			(41)	9				(41)				9	(41)	(52)
AOCI | Amounts reclassified from AOCI
Accumulated Other Comprehensive Income Loss [Line Items]
Other comprehensive income before reclassifications: gains (losses)													149
Purchased gas													1
Interest and related charges												57	60
Other income												127	88
Income before income tax expense												184	149
Income tax expense												(48)	(39)
Net Income From Continuing Operations Including Noncontrolling Interests												136	110
AOCI | Amounts reclassified from AOCI | Virginia Electric and Power Company
Accumulated Other Comprehensive Income Loss [Line Items]
Interest and related charges												2	3
Other income													(3)
Income before income tax expense												2
Income tax expense												1
Net Income From Continuing Operations Including Noncontrolling Interests												1
Interest Rate | Virginia Electric and Power Company
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance							$ (45)				$ (60)	(45)	(60)
Other comprehensive income before reclassifications: gains (losses)													13
Total other comprehensive income (loss)													15
Ending balance			$ (45)	$ 16				$ (45)				$ 16	(45)	$ (60)
Interest Rate | Amounts reclassified from AOCI | Virginia Electric and Power Company
Accumulated Other Comprehensive Income Loss [Line Items]
Interest and related charges													3
Income before income tax expense													3
Income tax expense													1
Net Income From Continuing Operations Including Noncontrolling Interests													$ 2
[1] See Note 25 for amounts attributable to affiliates. Net of $ 83 million, $ 119 million and $ 141 million tax at December 31, 2022, 2021 and 2020, respectively. Net of $( 5 ) million, $ 16 million and $ 21 million tax at December 31, 2022, 2021 and 2020, respectively. Net of $ 13 million, $( 10 ) million and $( 21 ) million tax at December 31, 2022 and 2021 and 2020, respectively. Net of $ 2 million, $( 2 ) million and $( 3 ) million tax at December 31, 2022, 2021 and 2020, respectively. Net of $ 445 million, $ 396 million and $ 478 million tax at December 31, 2022 and 2021 and 2020, respectively. Net of $ 1 million tax at both December 31, 2022 and 2021 and $— million tax at December 31, 2020.

Equity (Schedule of Changes i_2

Equity (Schedule of Changes in AOCI Net of Tax and Reclassifications out of AOCI by Component) (Parenthetical) (Detail) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Total Derivative-Hedging Activities
Accumulated Other Comprehensive Income Loss [Line Items]
Amount of tax	$ 83	$ 119	$ 141
Total Derivative-Hedging Activities | Virginia Electric and Power Company
Accumulated Other Comprehensive Income Loss [Line Items]
Amount of tax	(5)	16	21
Investment Securities
Accumulated Other Comprehensive Income Loss [Line Items]
Amount of tax	13	(10)	(21)
Investment Securities | Virginia Electric and Power Company
Accumulated Other Comprehensive Income Loss [Line Items]
Amount of tax	2	(2)	(3)
Pension and Other Postretirement Benefit Costs
Accumulated Other Comprehensive Income Loss [Line Items]
Amount of tax	445	396	$ 478
Equity Method Investees
Accumulated Other Comprehensive Income Loss [Line Items]
Amount of tax	$ 1	$ 1

Equity (Summary of Restricted S

Equity (Summary of Restricted Stock and Goal-Based Stock Activity) (Detail) - Restricted Stock - $ / shares shares in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Nonvested beginning (in shares)	1.3	1.4	1.4
Granted (in shares)	0.6	0.5	0.5
Vested (in shares)	(0.4)	(0.5)	(0.4)
Cancelled and forfeited (in shares)	(0.1)	(0.1)	(0.1)
Nonvested ending (in shares)	1.4	1.3	1.4
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Nonvested beginning, Weighted Average Grant Date Fair Value (in dollars per share)	$ 76.65	$ 77.41	$ 74.77
Granted, Weighted Average Grant Date Fair Value (in dollars per share)	75.08	71.78	81.74
Vested, Weighted Average Grant Date Fair Value (in dollars per share)	77.87	73.54	74.39
Cancelled and forfeited, Weighted Average Grant Date Fair Value (in dollars per share)	73.15	75.57	81.59
Nonvested ending, Weighted Average Grant Date Fair Value (in dollars per share)	$ 75.56	$ 76.65	$ 77.41

Dividend Restrictions (Narrativ

Dividend Restrictions (Narrative) (Detail) - Virginia Power and PSNC	12 Months Ended
	Dec. 31, 2022
Dividend Restrictions [Line Items]
Regulatory restrictions on payment of dividends	In addition, notice to the North Carolina Commission is required if payment of dividends causes the equity component of Virginia Power and PSNC’s capital structure to fall below 45%.
Required equity capital percentage	45%

Employee Benefit Plans (Narrati

Employee Benefit Plans (Narrative) (Detail) - USD ($)	1 Months Ended		3 Months Ended	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Accumulated benefit obligation	$ 10,200,000,000		$ 10,200,000,000		$ 7,700,000,000	$ 10,200,000,000
Defined contribution plan, employer matching contributions					75,000,000	65,000,000	$ 67,000,000
Discontinued Operations
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost					25,000,000	28,000,000	25,000,000
Non-service cost					$ (43,000,000)	(34,000,000)	(26,000,000)
Common and Preferred Stocks
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, actual plan asset allocation percentages					26%
Non-U.S. Equity
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, actual plan asset allocation percentages					19%
Fixed Income Funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, actual plan asset allocation percentages					32%
Real Assets
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, actual plan asset allocation percentages					3%
Other than Securities Investment
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, actual plan asset allocation percentages					20%
Series C Preferred Stock
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Issued to qualified defined benefit pension plans, shares	250,000
Virginia Electric and Power Company
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined contribution plan, employer matching contributions					$ 22,000,000	20,000,000	19,000,000
Pension Plans and Post Retirement Benefit Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Actual return (loss) on pension and other postretirement plan assets					3,000,000,000	1,500,000,000
Expected return on pension and other postretirement plan assets					1,100,000,000	1,000,000,000
Curtailment resulted in a decrease in the pension benefit obligation			26,000,000
Increase to net periodic benefit cost (credit)			$ 2,000,000
Pension Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Actual return (loss) on pension and other postretirement plan assets					(2,556,000,000)	1,202,000,000
Expected return on pension and other postretirement plan assets					886,000,000	834,000,000	777,000,000
Increase to net periodic benefit cost (credit)					(252,000,000)	(144,000,000)	(32,000,000)
Actuarial gains (losses) from increase decrease in discount rate					2,700,000,000	413,000,000
Contributions to qualified defined benefit pension plans		$ 250,000,000			9,000,000	284,000,000
Service cost					142,000,000	170,000,000	173,000,000
Pension Benefits | Series C Preferred Stock
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Contributions to qualified defined benefit pension plans	$ 250,000,000
Pension Benefits | Virginia Electric and Power Company | Amounts Associated With Dominion Pension Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Payment made to Dominion					172,000,000	151,000,000	313,000,000
Pension Benefits | Virginia Electric and Power Company | Other Operations and Maintenance
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Increase to net periodic benefit cost (credit)					72,000,000	86,000,000	118,000,000
Other Postretirement Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Actual return (loss) on pension and other postretirement plan assets					(416,000,000)	294,000,000
Expected return on pension and other postretirement plan assets					191,000,000	173,000,000	156,000,000
Increase to net periodic benefit cost (credit)					(172,000,000)	(140,000,000)	(172,000,000)
Actuarial gains (losses) from increase decrease in discount rate					360,000,000	161,000,000
Contribution to voluntary employees beneficiary association						0
Service cost					22,000,000	25,000,000	28,000,000
Other Postretirement Benefits | Virginia Electric and Power Company
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Contribution to voluntary employees beneficiary association					0	0	0
Other Postretirement Benefits | Virginia Electric and Power Company | Forecast
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Contribution to voluntary employees beneficiary association				$ 0
Other Postretirement Benefits | Virginia Electric and Power Company | Other Operations and Maintenance | Dominion Energy Retiree Health And Welfare Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Increase to net periodic benefit cost (credit)					$ (81,000,000)	$ (72,000,000)	$ (58,000,000)

Employee Benefit Plans (Summary

Employee Benefit Plans (Summary of Changes in Pension and Other Postretirement Benefit Plans) (Detail) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Amounts recognized in the Consolidated Balance Sheets at December 31:
Noncurrent pension and other postretirement benefit assets		$ 1,479	$ 1,930
Pension Benefits
Changes in benefit obligation:
Benefit obligation at beginning of year		10,890	11,363
Service cost		$ 142	$ 170	$ 173
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]		Other Nonoperating Income Expense	Other Nonoperating Income Expense	Other Nonoperating Income Expense
Interest cost		$ 333	$ 317	$ 351
Benefits paid		(511)	(488)
Actuarial (gains) losses during the year		(2,716)	(413)
Sale of Hope		(64)
Settlements and curtailments		(8)	(59)
Benefit obligation at end of year	$ 11,363	8,066	10,890	11,363
Changes in fair value of plan assets:
Fair value of plan assets at beginning of year		11,945	10,979
Actual return (loss) on plan assets		(2,556)	1,202
Employer contributions	250	9	284
Benefits paid		(511)	(488)
Sale of Hope		(188)
Settlements		(5)	(32)
Fair value of plan assets at end of year	10,979	8,694	11,945	10,979
Funded status at end of year		628	1,055
Amounts recognized in the Consolidated Balance Sheets at December 31:
Noncurrent pension and other postretirement benefit assets		580	878
Noncurrent assets held for sale		295	368
Other current liabilities		(12)	(12)
Noncurrent pension and other postretirement benefit liabilities		(196)	(127)
Noncurrent liabilities held for sale		(39)	(52)
Net amount recognized		$ 628	$ 1,055
Significant assumptions used to determine benefit obligations as of December 31:
Weighted average rate of increase for compensation		4.38%	4.51%
Pension Benefits | Minimum
Significant assumptions used to determine benefit obligations as of December 31:
Discount rate		5.65%	3.06%
Crediting interest rate for cash balance and similar plans		4.40%	1.81%
Pension Benefits | Maximum
Significant assumptions used to determine benefit obligations as of December 31:
Discount rate		5.75%	3.19%
Crediting interest rate for cash balance and similar plans		4.50%	1.94%
Other Postretirement Benefits
Changes in benefit obligation:
Benefit obligation at beginning of year		$ 1,537	$ 1,746
Service cost		$ 22	$ 25	$ 28
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]		Other Nonoperating Income Expense	Other Nonoperating Income Expense	Other Nonoperating Income Expense
Interest cost		$ 45	$ 46	$ 58
Benefits paid		(97)	(105)
Actuarial (gains) losses during the year		(361)	(161)
Plan amendments			(14)
Sale of Hope		(19)
Benefit obligation at end of year	1,746	1,127	1,537	1,746
Changes in fair value of plan assets:
Fair value of plan assets at beginning of year		2,323	2,100
Actual return (loss) on plan assets		(416)	294
Benefits paid		(62)	(71)
Fair value of plan assets at end of year	$ 2,100	1,845	2,323	$ 2,100
Funded status at end of year		718	786
Amounts recognized in the Consolidated Balance Sheets at December 31:
Noncurrent pension and other postretirement benefit assets		899	1,052
Noncurrent assets held for sale		11	12
Other current liabilities		(13)	(15)
Noncurrent pension and other postretirement benefit liabilities		(179)	(263)
Net amount recognized		$ 718	$ 786
Other Postretirement Benefits | Minimum
Significant assumptions used to determine benefit obligations as of December 31:
Discount rate		5.69%	3.04%
Other Postretirement Benefits | Maximum
Significant assumptions used to determine benefit obligations as of December 31:
Discount rate		5.70%	3.11%

Employee Benefit Plans (Benefit

Employee Benefit Plans (Benefit Obligation in Excess of Plan Assets) (Detail) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation	$ 7,655	$ 9,420
Fair value of plan assets	7,410	9,229
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation	197	261
Fair value of plan assets	$ 5	$ 7

Employee Benefit Plans (Accumul

Employee Benefit Plans (Accumulated Benefit Obligation in Excess of Plan Assets) (Detail) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
General Discussion Of Pension And Other Postretirement Benefits [Abstract]
Accumulated benefit obligation	$ 776	$ 127
Fair value of plan assets	$ 623	$ 53

Employee Benefit Plans (Benef_2

Employee Benefit Plans (Benefit Payments Expected Future Service) (Detail) $ in Millions	Dec. 31, 2022 USD ($)
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
2023	$ 518
2024	527
2025	542
2026	551
2027	560
2028-2032	2,925
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
2023	99
2024	97
2025	96
2026	94
2027	93
2028-2032	$ 433

Employee Benefit Plans (Fair Va

Employee Benefit Plans (Fair Values of Pension and Post Retirement Plan Assets by Asset Category) (Detail) - USD ($) $ in Millions		Dec. 31, 2022	Dec. 31, 2021
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value	[1]	$ 8,670	$ 11,945
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value	[2]	1,843	2,319
Level 1 | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value		2,812	4,510
Level 1 | Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value		876	1,164
Level 2 | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value		2,534	2,900
Level 2 | Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value		138	140
Fair Value, Inputs, Level 1, 2 and 3 | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value		5,346	7,410
Fair Value, Inputs, Level 1, 2 and 3 | Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value		1,014	1,304
NAV | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value	[3]	3,324	4,535
Cash equivalents and other | Level 1 | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value		14	25
Cash equivalents and other | Level 1 | Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value		3	3
Cash equivalents and other | Level 2 | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value		11	5
Cash equivalents and other | Level 2 | Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value		1	1
Cash equivalents and other | Fair Value, Inputs, Level 1, 2 and 3 | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value		25	30
Cash equivalents and other | Fair Value, Inputs, Level 1, 2 and 3 | Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value		4	4
US Equity Securities | Level 1 | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value	[4]	1,653	2,592
US Equity Securities | Level 1 | Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value	[5]	685	898
US Equity Securities | Level 2 | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value	[4]	170	244
US Equity Securities | Level 2 | Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value	[5]	10	14
US Equity Securities | Fair Value, Inputs, Level 1, 2 and 3 | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value	[4]	1,823	2,836
US Equity Securities | Fair Value, Inputs, Level 1, 2 and 3 | Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value	[5]	695	912
Foreign Equity Securities | Level 1 | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value		1,034	1,773
Foreign Equity Securities | Level 1 | Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value		181	256
Foreign Equity Securities | Level 2 | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value		5	19
Foreign Equity Securities | Level 2 | Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value			1
Foreign Equity Securities | Fair Value, Inputs, Level 1, 2 and 3 | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value		1,039	1,792
Foreign Equity Securities | Fair Value, Inputs, Level 1, 2 and 3 | Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value		181	257
Insurance Contracts | Level 2 | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value		166	279
Insurance Contracts | Level 2 | Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value		10	16
Insurance Contracts | Fair Value, Inputs, Level 1, 2 and 3 | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value		166	279
Insurance Contracts | Fair Value, Inputs, Level 1, 2 and 3 | Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value		10	16
Corporate debt instruments | Level 1 | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value		65	81
Corporate debt instruments | Level 1 | Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value		4	5
Corporate debt instruments | Level 2 | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value		805	1,439
Corporate debt instruments | Level 2 | Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value		38	61
Corporate debt instruments | Fair Value, Inputs, Level 1, 2 and 3 | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value		870	1,520
Corporate debt instruments | Fair Value, Inputs, Level 1, 2 and 3 | Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value		42	66
Government securities | Level 1 | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value		46	39
Government securities | Level 1 | Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value		3	2
Government securities | Level 2 | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value		1,377	914
Government securities | Level 2 | Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value		79	47
Government securities | Fair Value, Inputs, Level 1, 2 and 3 | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value		1,423	953
Government securities | Fair Value, Inputs, Level 1, 2 and 3 | Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value		82	49
Common/collective trust funds | NAV | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value	[3]	1,780	3,010
Common/collective trust funds | NAV | Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value	[6]	649	840
Real Estate Funds | NAV | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value	[3]	66	116
Real Estate Funds | NAV | Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value	[6]	11	13
Private Equity Funds | NAV | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value	[3]	1,284	1,233
Private Equity Funds | NAV | Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value	[6]	158	152
Fixed Income Funds | NAV | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value	[3]	192	162
Fixed Income Funds | NAV | Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value	[6]	11	9
Hedge Funds | NAV | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value	[3]	2	14
Hedge Funds | NAV | Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value	[6]		1
Investments Measured At Fair Value Including Excluding Pending Purchases Sales And Accrued Income | NAV | Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Total recorded at fair value	[6]	$ 829	$ 1,015
[1] Excludes net assets related to pending sales of securities and advanced subscription of $ 177 million, net accrued income of $ 27 million, and includes net assets related to pending purchases of securities of $ 180 million at December 31, 2022. Excludes net assets related to pending sales of securities of $ 35 million, net accrued income of $ 27 million, and includes net assets related to pending purchases of securities of $ 62 million at December 31, 2021. Excludes net assets related to pending sales of securities and advanced subscription of $ 10 million, net accrued income of $ 2 million, and includes net assets related to pending purchases of securities of $ 10 million at December 31, 2022. Excludes net assets related to pending sales of securities of $ 5 million, net accrued income of $ 2 million, and includes net assets related to pending purchases of securities of $ 3 million at December 31, 2021. These investments that are measured at fair value using the NAV per share (or its equivalent) as a practical expedient are not required to be categorized in the fair value hierarchy. Includes $ 170 million and $ 258 million of Dominion Energy preferred stock at December 31, 2022 and 2021, respectively. Includes $ 10 million of Dominion Energy preferred stock at December 31, 2022. These investments that are measured at fair value using the NAV per share (or its equivalent) as a practical expedient are not required to be categorized in the fair value hierarchy.

Employee Benefit Plans (Fair _2

Employee Benefit Plans (Fair Values of Pension and Post Retirement Plan Assets by Asset Category) (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Preferred stock	$ 170	$ 258
Pending sales of securities and advanced subscriptions	177
Pending sales of securities		35
Net accrued income	27	27
Pending purchases of securities	180	62
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Preferred stock	10
Pending sales of securities and advanced subscriptions	10
Pending sales of securities		5
Net accrued income	2	2
Pending purchases of securities	$ 10	$ 3

Employee Benefit Plans (Net Per

Employee Benefit Plans (Net Periodic Benefit (Credit) Cost and Amounts Recognized in Other Comprehensive Income and Regulatory Assets and Liabilities) (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost		$ 142	$ 170	$ 173
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]		Other Nonoperating Income Expense	Other Nonoperating Income Expense	Other Nonoperating Income Expense
Interest cost		$ 333	$ 317	$ 351
Expected return on plan assets		(886)	(834)	(777)
Amortization of prior service (credit) cost				1
Amortization of net actuarial loss		159	193	206
Settlements, curtailments and special termination benefits	[1]		10	14
Net periodic benefit (credit) cost		(252)	(144)	(32)
Changes in plan assets and benefit obligations recognized in other comprehensive income and regulatory assets and liabilities:
Current year net actuarial (gain) loss		726	(782)	166
Settlements and curtailments	[1]	(3)	(36)	(81)
Amortization of net actuarial gain (loss)		(159)	(193)	(206)
Amortization of prior service credit (cost)				(1)
Sale of hope		(47)
Total recognized in other comprehensive income and regulatory assets and liabilities		$ 517	$ (1,011)	$ (122)
Significant assumptions used to determine periodic cost:
Weighted average rate of increase for compensation		4.51%	4.53%	4.23%
Pension Benefits | Minimum
Significant assumptions used to determine periodic cost:
Discount rate		3.06%	2.73%	2.77%
Expected long-term rate of return on plan assets		7%	7%	7%
Crediting interest rate for cash balance and similar plans		1.81%	1.93%	2.31%
Pension Benefits | Maximum
Significant assumptions used to determine periodic cost:
Discount rate		3.19%	3.29%	3.63%
Expected long-term rate of return on plan assets		8.35%	8.45%	8.60%
Crediting interest rate for cash balance and similar plans		1.94%	2.15%	2.83%
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost		$ 22	$ 25	$ 28
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]		Other Nonoperating Income Expense	Other Nonoperating Income Expense	Other Nonoperating Income Expense
Interest cost		$ 45	$ 46	$ 58
Expected return on plan assets		(191)	(173)	(156)
Amortization of prior service (credit) cost		(38)	(42)	(49)
Amortization of net actuarial loss		(2)	4	6
Settlements, curtailments and special termination benefits	[1]	(8)		(59)
Net periodic benefit (credit) cost		(172)	(140)	(172)
Changes in plan assets and benefit obligations recognized in other comprehensive income and regulatory assets and liabilities:
Current year net actuarial (gain) loss		246	(282)	(110)
Prior service (credit) cost			(13)	(6)
Settlements and curtailments	[1]	10		59
Amortization of net actuarial gain (loss)		2	(4)	(6)
Amortization of prior service credit (cost)		38	42	49
Total recognized in other comprehensive income and regulatory assets and liabilities		$ 296	$ (257)	$ (14)
Significant assumptions used to determine periodic cost:
Expected long-term rate of return on plan assets		8.35%	8.45%	8.50%
Health care cost trend rate	[2]	6.25%	6.25%	6.25%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)	[2]	5%	5%	5%
Other Postretirement Benefits | Minimum
Significant assumptions used to determine periodic cost:
Discount rate		3.04%	2.69%	3.07%
Year that the rate reaches the ultimate trend rate	[2]	2026	2026	2025
Other Postretirement Benefits | Maximum
Significant assumptions used to determine periodic cost:
Discount rate		5.03%	2.80%	3.52%
Year that the rate reaches the ultimate trend rate	[2]	2027	2027	2026
[1] 2022 amounts relate primarily to Dominion Energy’s sale of Hope. 2021 amounts relate primarily to the Dominion Energy executive nonqualified pension plan. 2020 amounts primarily relate to the GT&S Transaction. Assumptions used to determine net periodic cost for the following year.

Employee Benefit Plans (AOCI an

Employee Benefit Plans (AOCI and Regulatory Assets and Liabilities that have Not been Recognized as Components of Periodic Benefit (Credit) Cost) (Detail) - USD ($) $ in Millions		Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss		$ 1,572	$ 1,458
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss		2,714	2,198
Prior service (credit) cost		3	2
Total	[1]	2,717	2,200
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss		84	(166)
Prior service (credit) cost		(157)	(203)
Total	[1]	$ (73)	$ (369)
[1] As of December 31, 2022, of the $ 2.7 billion and $( 73 ) million related to pension benefits and other postretirement benefits, $ 1.7 billion and $ 14 million, respectively, are included in AOCI, with the remainder included in regulatory assets and liabilities, except for $ 170 million presented in assets and liabilities held for sale. As of December 31, 2021, of the $ 2.2 billion and $( 369 ) million related to pension benefits and other postretirement benefits, $ 1.7 billion and $( 155 ) million, respectively, are included in AOCI, with the remainder included in regulatory assets and liabilities, except for $ 108 million presented in assets and liabilities held for sale.

Employee Benefit Plans (AOCI _2

Employee Benefit Plans (AOCI and Regulatory Assets and Liabilities that have Not been Recognized as Components of Periodic Benefit (Credit) Cost) (Parenthetical) (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Assets and liabilities held for sale		$ 170	$ 108
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Total	[1]	2,717	2,200
Amount included in AOCI		1,700	1,700
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Total	[1]	(73)	(369)
Amount included in AOCI		$ 14	$ (155)
[1] As of December 31, 2022, of the $ 2.7 billion and $( 73 ) million related to pension benefits and other postretirement benefits, $ 1.7 billion and $ 14 million, respectively, are included in AOCI, with the remainder included in regulatory assets and liabilities, except for $ 170 million presented in assets and liabilities held for sale. As of December 31, 2021, of the $ 2.2 billion and $( 369 ) million related to pension benefits and other postretirement benefits, $ 1.7 billion and $( 155 ) million, respectively, are included in AOCI, with the remainder included in regulatory assets and liabilities, except for $ 108 million presented in assets and liabilities held for sale.

Commitments and Contingencies_2

Commitments and Contingencies (Narrative) (Detail) shares in Millions, $ in Millions

1 Months Ended

3 Months Ended

12 Months Ended

Sep. 30, 2022 USD ($)

Jun. 30, 2022 USD ($) shares

May 31, 2022 shares

Aug. 31, 2021 shares

Jul. 31, 2021 USD ($) shares

Jun. 30, 2021 USD ($)

Dec. 31, 2020 USD ($)

Oct. 31, 2020

Sep. 30, 2020 USD ($)

Aug. 31, 2020 USD ($)

Jul. 31, 2020 USD ($)

Dec. 31, 2019 USD ($)

Jul. 31, 2019 USD ($)

Aug. 31, 2018 USD ($)

Jun. 30, 2018 USD ($)

Aug. 31, 2017 USD ($)

Apr. 30, 2017 Petition

Aug. 31, 2016 T

Mar. 31, 2023 Site

Dec. 31, 2022 USD ($)

Sep. 30, 2022 USD ($)

Jun. 30, 2022 USD ($) Site

Mar. 31, 2022 USD ($)

Dec. 31, 2021 USD ($)

Sep. 30, 2021 USD ($)

Jun. 30, 2021 USD ($)

Mar. 31, 2021 USD ($)

Dec. 31, 2022 USD ($) Facility Site Indicator gal

Dec. 31, 2021 USD ($)

Dec. 31, 2020 USD ($)

Dec. 31, 2019 USD ($)

Dec. 31, 2018 USD ($)

Mar. 31, 2020 USD ($)

Loss Contingencies [Line Items]

Impairment of assets and other charges

$ 2,062

$ 194

$ 2,104

Gain on sales of assets

(426)

(112)

60

Net income (loss) from continuing operations including noncontrolling interests

$ (239)

$ 626

$ (665)

$ 300

$ 628

$ 496

$ 140

$ 693

22

1,957

784

Property, plant and equipment, net

51,826

48,901

$ 51,826

48,901

Unfavorable Regulatory Action | EPA

Loss Contingencies [Line Items]

Electric generating station facilities heightened entrainment analysis per day | gal

125,000,000

Carbon Regulations

Loss Contingencies [Line Items]

Public Utilities Significant Emission Rate Per Year CO2 Equivalent | T

75,000

CWA | Unfavorable Regulatory Action

Loss Contingencies [Line Items]

Number of mandatory facility-specific factors | Indicator

5

Number of optional facility-specific factors | Indicator

6

Number of facilities that are subject to final regulations | Facility

15

CWA | Unfavorable Regulatory Action | EPA | Final Rule to Revise Effluent Limitations Guidelines for Steam Electric Power Generating Category

Loss Contingencies [Line Items]

Number of separate petitions for reconsideration granted | Petition

2

Waste Management and Remediation | Unfavorable Regulatory Action | EPA

Loss Contingencies [Line Items]

Number of sites remediation work substantially completed | Site

13

Number of sites with remediation plans | Site

1

Environmental remediation expense

$ 14

Environmental Remediation Expense, Statement of Income or Comprehensive Income [Extensible Enumeration]

Utilities Operating Expense Maintenance And Operations

Environmental remediation expense net of tax

$ 11

Number of additional sites which are not under investigation | Site

12

Waste Management and Remediation | Unfavorable Regulatory Action | EPA | Discontinued Operations

Loss Contingencies [Line Items]

Environmental remediation reserves

4

Environmental remediation expense net of tax

3

Waste Management and Remediation | Unfavorable Regulatory Action | EPA | Former Gas Plant Site With Post Closure Groundwater Monitoring Program

Loss Contingencies [Line Items]

Environmental remediation reserves

$ 47

45

Environmental remediation reserves related to discontinued operations

1

1

Dominion Energy South Carolina Inc | SCDOR

Loss Contingencies [Line Items]

Litigation settlement paid

$ 51

$ 165

Proposed assessment amount from audit

$ 410

Proportional share of NND project

100%

Non-utility property with fair value

$ 28

Gain on sales of assets

18

Net income (loss) from continuing operations including noncontrolling interests

14

Certain additional utility property

$ 3

3

Gain (loss) on utility properties

$ 20

Dominion Energy South Carolina Inc | South Carolina

Loss Contingencies [Line Items]

Amount claimed by plaintiffs in legal matter

$ 100

Percentage claimed by plaintiffs in legal matter

100%

Dominion Energy South Carolina Inc | NND Project

Loss Contingencies [Line Items]

Noncontrolling partnership interest

55%

55%

Contested amount for filed liens in Fairfield country

$ 285

Virginia Electric and Power Company

Loss Contingencies [Line Items]

Property, plant and equipment, net

$ 38,479

34,656

$ 38,479

34,656

Virginia Electric and Power Company | Environmental Protection Agency And State Regulatory Agencies

Loss Contingencies [Line Items]

Number of facilities to assess the applicability of section 316(b) | Facility

3

Virginia Electric and Power Company | CWA | Unfavorable Regulatory Action

Loss Contingencies [Line Items]

Number of facilities that are subject to final regulations | Facility

9

Virginia Electric and Power Company | Waste Management and Remediation | Unfavorable Regulatory Action | EPA

Loss Contingencies [Line Items]

Number of sites with remediation plans | Site

1

Environmental remediation expense

$ 10

Environmental Remediation Expense, Statement of Income or Comprehensive Income [Extensible Enumeration]

Utilities Operating Expense Maintenance And Operations

Environmental remediation expense net of tax

$ 7

Number of additional sites which are not under investigation | Site

2

Virginia Electric and Power Company | Waste Management and Remediation | Unfavorable Regulatory Action | EPA | Former Gas Plant Site With Post Closure Groundwater Monitoring Program

Loss Contingencies [Line Items]

Environmental remediation reserves

$ 25

25

Hydroelectric Facilities | Environmental Protection Agency And State Regulatory Agencies

Loss Contingencies [Line Items]

Number of facilities to assess the applicability of section 316(b) | Facility

8

Common Stock

Loss Contingencies [Line Items]

Litigation settlement, benefit fund

$ 320

Litigation settlement amount through stock issuance

$ 322

DESC Ratepayer Case

Loss Contingencies [Line Items]

Litigation settlement, benefit fund

$ 520

Minimum | CWA | Unfavorable Regulatory Action

Loss Contingencies [Line Items]

Electric generating stations with water withdrawals per day | gal

2,000,000

Minimum | CWA | Unfavorable Regulatory Action | EPA | Final Rule to Revise Effluent Limitations Guidelines for Steam Electric Power Generating Category

Loss Contingencies [Line Items]

Loss contingencies individual circumstances period

2021

Minimum | Dominion Energy South Carolina Inc | SCDOR

Loss Contingencies [Line Items]

Initial litigation settlement amount through stock issuance

$ 43

Maximum | CWA | Unfavorable Regulatory Action | EPA | Final Rule to Revise Effluent Limitations Guidelines for Steam Electric Power Generating Category

Loss Contingencies [Line Items]

Loss contingencies individual circumstances period

2028

SCANA

Loss Contingencies [Line Items]

Cash payment

2

Litigation settlement paid

25

Other expense

25

Other expense, after tax

25

Impairment of assets and other charges

100

90

Impairment of assets and other charges, after tax

75

$ 68

Utilization of insurance proceeds for settlements

$ 33

Litigation settlement amount through stock issuance | shares

0.4

Escrow Deposit

$ 160

Litigation settlement expense

$ 32.5

$ 192.5

SCANA | Other Current Liabilities

Loss Contingencies [Line Items]

Reserves for SCANA legal proceedings

94

274

$ 94

274

SCANA | Other Receivables

Loss Contingencies [Line Items]

Insurance receivables

68

118

68

118

SCANA | Personal Injury or Wrongful Death Cases

Loss Contingencies [Line Items]

Reserves for SCANA legal proceedings

68

85

68

85

Insurance receivables

$ 68

85

$ 68

85

SCANA | State Court Derivative Case

Loss Contingencies [Line Items]

Litigation settlement paid

33

SCANA | Federal Court Merger Case | State Court Merger Case

Loss Contingencies [Line Items]

Litigation settlement paid

$ 63

SCANA | DESC Ratepayer Case

Loss Contingencies [Line Items]

Cash payment

$ 117

$ 115

Escrow Deposit

2,000

Credit in future electric rate relief

2,000

Proceeds from sale of property

38.5

Property, plant and equipment, net

$ 3

$ 27

$ 8

$ 8

SCANA | Minimum | DESC Ratepayer Case

Loss Contingencies [Line Items]

Proceeds from sale of property

60

SCANA | Maximum | Common Stock

Loss Contingencies [Line Items]

Litigation settlement amount through stock issuance

$ 32.5

SCANA | Maximum | DESC Ratepayer Case

Loss Contingencies [Line Items]

Proceeds from sale of property

$ 85

DESC

Loss Contingencies [Line Items]

Litigation settlement expense

$ 99

DESC | Common Stock | Dominion Energy South Carolina Inc

Loss Contingencies [Line Items]

Litigation settlement through stock issuance | shares

1.4

DESC | Common Stock | Dominion Energy South Carolina Inc | SCDOR

Loss Contingencies [Line Items]

Initial litigation settlement through stock issuance | shares

0.9

0.6

SCANA and DESC

Loss Contingencies [Line Items]

Disgorgement and prejudgment interest total, amount

$ 112.5

Commitments and Contingencies_3

Commitments and Contingencies (Nuclear Operations) (Narrative) (Detail) - USD ($)	1 Months Ended			12 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Feb. 28, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Loss Contingencies [Line Items]
Settlement amount awarded from other party			$ 48,000,000
Minimum financial assurance				$ 3,600,000,000
NRC minimum requirement for nuclear power plant licensees				1,060,000,000
Maximum assessment for premiums on insurance policy				32,000,000
Maximum assessment for insurance policy				65,000,000
Spent Nuclear Fuel
Loss Contingencies [Line Items]
Receivables				56,000,000	$ 52,000,000
Maximum
Loss Contingencies [Line Items]
Amount that could be assessed for each licensed reactor				138,000,000
Amount that could be assessed for each licensed reactor per reactor				20,000,000
Nuclear Obligations
Loss Contingencies [Line Items]
Maximum liability protection per nuclear incident amount				13,700,000,000
Nuclear Obligations | Secondary Financial Protection Program
Loss Contingencies [Line Items]
Maximum liability protection per nuclear incident amount	$ 13,700,000,000	$ 13,500,000,000
Virginia Electric and Power Company
Loss Contingencies [Line Items]
Minimum financial assurance				2,100,000,000
Maximum assessment for premiums on insurance policy				33,000,000
Maximum assessment for insurance policy				9,000,000
Virginia Electric and Power Company | Spent Nuclear Fuel
Loss Contingencies [Line Items]
Receivables				37,000,000	39,000,000
DESC | Non-nuclear Obligation | European Mutual Association
Loss Contingencies [Line Items]
Property insurance coverage				1,000,000
Surry and North Anna
Loss Contingencies [Line Items]
Settlement amount awarded from other party				17,000,000	25,000,000	$ 24,000,000
Millstone
Loss Contingencies [Line Items]
Settlement amount awarded from other party				7,000,000	9,000,000	11,000,000
Summer
Loss Contingencies [Line Items]
Settlement amount awarded from other party				1,000,000	$ 1,000,000	$ 4,000,000
Millstone, Summer, Surry and North Anna
Loss Contingencies [Line Items]
Amount of coverage purchased from commercial insurance pools				450,000,000
Property insurance coverage				$ 1,060,000,000

Commitments and Contingencies_4

Commitments and Contingencies (Schedule of Long Term Purchase Commitments) (Detail) $ in Millions	Dec. 31, 2022 USD ($)	[1]
Long-term Purchase Commitment [Line Items]
2023	$ 71
2024	70
2025	70
2026	73
2027	73
Thereafter	630
Total	$ 987
[1] Commitments represent estimated amounts payable for energy under power purchase contracts with qualifying facilities which expire at various dates through 2046. Energy payments are generally based on fixed dollar amounts per month and totaled $ 61 million and $ 59 million for the years ended December 31, 2022 and 2021, respectively .

Commitments and Contingencies_5

Commitments and Contingencies (Schedule of Long Term Purchase Commitments) (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Power Purchase Contracts [Abstract]
Energy payments	$ 61	$ 59

Commitments and Contingencies_6

Commitments and Contingencies (Guarantees, Surety Bonds and Letters of Credit) (Detail)	12 Months Ended
	Dec. 31, 2022 USD ($) Guarantee
Guarantee Obligations [Line Items]
Guarantee liability	$ 4,343,000,000	[1],[2]
Financial Guarantee | Equity Method Investee | Cove Point
Guarantee Obligations [Line Items]
Number of Guarantee | Guarantee	4
Guarantees with Maximum Limit [Member] | Equity Method Investee | Cove Point
Guarantee Obligations [Line Items]
Number of Guarantee | Guarantee	2
Guarantee liability	$ 1,900,000,000
Guarantees with No Maximum Limit [Member] | Equity Method Investee | Cove Point
Guarantee Obligations [Line Items]
Number of Guarantee | Guarantee	2
Guarantee liability	$ 0
Additional Guarantees [Member]
Guarantee Obligations [Line Items]
Guarantee liability	20,000,000
Surety Bond
Guarantee Obligations [Line Items]
Guarantee liability	249,000,000
Surety Bond | Virginia Electric and Power Company
Guarantee Obligations [Line Items]
Guarantee liability	172,000,000
Held for sale [Member]
Guarantee Obligations [Line Items]
Guarantee liability	39,000,000
Financial Standby Letter of Credit
Guarantee Obligations [Line Items]
Guarantee liability	$ 202,000,000
[1] Excludes Dominion Energy’s guarantee of an offshore wind installation vessel discussed in Note 15. In July 2016, Dominion Energy signed an agreement with a lessor to construct and lease a new corporate office property in Richmond, Virginia. The lessor provided equity and obtained financing commitments from debt investors, totaling $ 365 million, which funded total project costs. The project became substantially complete in August 2019 at which point the facility was available for Dominion Energy’s use and the five-year lease term commenced. At the end of the initial lease term, Dominion Energy can (i) extend the term of the lease for an additional five years , subject to the approval of the participants, at current market terms, (ii) purchase the property for an amount equal to the project costs or, (iii) subject to certain terms and conditions, sell the property on behalf of the lessor to a third party using commercially reasonable efforts to obtain the highest cash purchase price for the property. If the project is sold and the proceeds from the sale are insufficient to repay the investors for the project costs, Dominion Energy may be required to make a payment to the lessor, up to 87 % of project costs, for the difference between the project costs and sale proceeds. At December 31, 2022, no amounts have been recorded related to this guarantee.

Commitments and Contingencies -

Commitments and Contingencies - (Schedule of Subsidiary Guarantees) (Detail) $ in Millions	Dec. 31, 2022 USD ($)
Guarantee Obligations [Line Items]
Maximum Exposure	$ 4,343	[1],[2]
Commodity Transactions
Guarantee Obligations [Line Items]
Maximum Exposure	2,567	[3]
Nuclear Obligations
Guarantee Obligations [Line Items]
Maximum Exposure	243	[4]
Solar
Guarantee Obligations [Line Items]
Maximum Exposure	304	[5]
Other
Guarantee Obligations [Line Items]
Maximum Exposure	$ 1,229	[6]
[1] Excludes Dominion Energy’s guarantee of an offshore wind installation vessel discussed in Note 15. In July 2016, Dominion Energy signed an agreement with a lessor to construct and lease a new corporate office property in Richmond, Virginia. The lessor provided equity and obtained financing commitments from debt investors, totaling $ 365 million, which funded total project costs. The project became substantially complete in August 2019 at which point the facility was available for Dominion Energy’s use and the five-year lease term commenced. At the end of the initial lease term, Dominion Energy can (i) extend the term of the lease for an additional five years , subject to the approval of the participants, at current market terms, (ii) purchase the property for an amount equal to the project costs or, (iii) subject to certain terms and conditions, sell the property on behalf of the lessor to a third party using commercially reasonable efforts to obtain the highest cash purchase price for the property. If the project is sold and the proceeds from the sale are insufficient to repay the investors for the project costs, Dominion Energy may be required to make a payment to the lessor, up to 87 % of project costs, for the difference between the project costs and sale proceeds. At December 31, 2022, no amounts have been recorded related to this guarantee. Guarantees related to commodity commitments of certain subsidiaries. These guarantees were provided to counterparties in order to facilitate physical and financial transaction related commodities and services. Guarantees primarily related to certain DGI subsidiaries regarding all aspects of running a nuclear facility. Includes guarantees to facilitate the development of solar projects. Guarantees related to other miscellaneous contractual obligations such as leases, environmental obligations, construction projects and insurance programs. Also includes guarantees entered into by Dominion Energy RNG Holdings, II, Inc. on behalf of a subsidiary to facilitate construction of renewable natural gas facilities. Due to the uncertainty of workers’ compensation claims, the parental guarantee has no stated limit.

Commitments and Contingencies_7

Commitments and Contingencies - Schedule of Subsidiary Guarantees (Parenthetical) (Details) - USD ($)	1 Months Ended
	Jul. 31, 2016	Dec. 31, 2022	Dec. 31, 2019
Solar
Guarantee Obligations [Line Items]
Guarantee obligations, related to entities held for sale		$ 90,000,000
Lessor | New Corporate Office | Agreement with Lessor to Construct and Lease Corporate Office Property
Guarantee Obligations [Line Items]
Amount of financing commitments to fund estimated project costs	$ 365,000,000		$ 465,000,000
Project Completion Period	2019-08
Lease commenced term	5 years
Lessee, operating Lease, existence of option to extend	true
Lease extend term	5 years
Maximum percentage payment of project costs for difference between project costs and sales proceeds	87%
Guarantee amount		$ 0

Commitments and Contingencies_8

Commitments and Contingencies (Charitable Commitments) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2022	Dec. 31, 2021
Other Deferred Credits and Other Liabilities
Recorded Unconditional Purchase Obligation [Line Items]
Charitable commitments		$ 32	$ 43
Other Current Liabilities
Recorded Unconditional Purchase Obligation [Line Items]
Charitable commitments		$ 11	$ 26
Other Income
Recorded Unconditional Purchase Obligation [Line Items]
Charitable expenses	$ 80

Credit Risk (Narrative) (Detail

Credit Risk (Narrative) (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) Counterparty	Dec. 31, 2021 USD ($)
Concentration Risk and Guarantor Obligations [Line Items]
Credit exposure	$ 281
Letter of credit as collateral posted for derivatives in liability position	20
Additional collateral to be posted if the credit related contingent features were triggered	140	$ 31
Collateral derivatives with credit-related contingent provision in a liability position	72	66
Aggregate fair value of all derivative instruments with credit contingent provisions that are in a liability position	212	97
Virginia Electric and Power Company
Concentration Risk and Guarantor Obligations [Line Items]
Credit exposure	25
Letter of credit as collateral posted for derivatives in liability position	20
Additional collateral to be posted if the credit related contingent features were triggered	28	22
Collateral derivatives with credit-related contingent provision in a liability position	72	54
Aggregate fair value of all derivative instruments with credit contingent provisions that are in a liability position	99	$ 76
Credit Concentration Risk
Concentration Risk and Guarantor Obligations [Line Items]
Amount of exposure for single counterparty	$ 77
Number of counterparties | Counterparty	0
Credit Concentration Risk | Virginia Electric and Power Company
Concentration Risk and Guarantor Obligations [Line Items]
Amount of exposure for single counterparty	$ 8
Number of counterparties | Counterparty	0
Credit Concentration Risk | Investment Grade Counterparty | Virginia Electric and Power Company
Concentration Risk and Guarantor Obligations [Line Items]
Concentration risk, percentage (percentage)	76%
Credit Concentration Risk | Investment Grade | Investment Grade Counterparty
Concentration Risk and Guarantor Obligations [Line Items]
Concentration risk, percentage (percentage)	89%

Related-Party Transactions (Nar

Related-Party Transactions (Narrative) (Detail) - USD ($)		1 Months Ended	12 Months Ended
		Jan. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Nov. 30, 2022	Jun. 30, 2021
Related Party Transaction [Line Items]
Other liabilities, noncurrent			$ 1,276,000,000	$ 1,308,000,000
Revolving credit facility maximum borrowing capacity	[1]		6,000,000,000	6,000,000,000
Payables to affiliates	[2]		1,697,000,000	1,585,000,000
Borrowing Interest Charges			15,000,000	1,000,000	$ 1,000,000
Revolving Credit Facility
Related Party Transaction [Line Items]
Revolving credit facility maximum borrowing capacity							$ 6,000,000,000
Virginia Electric and Power Company
Related Party Transaction [Line Items]
Other liabilities, noncurrent	[3]		1,040,000,000	1,248,000,000
Revolving credit facility maximum borrowing capacity	[4]		6,000,000,000	6,000,000,000
Payables to affiliates			$ 826,000,000	567,000,000
Outstanding borrowings, net of repayments, under money pool for non-regulated subsidiaries				$ 0
Issuance of common stock (in shares)			0	0	0
Commencing Period		20 months
Lease commencement term		2025-08
Related party transaction costs		$ 240,000,000
Cost of Revenue, Related and Nonrelated Party Status [Extensible Enumeration]		Related Party
Virginia Electric and Power Company | Related Party | Pension Benefits | Amounts Associated With Dominion Pension Plan
Related Party Transaction [Line Items]
Other liabilities, noncurrent			$ 422,000,000	$ 522,000,000
Other Liability, Noncurrent, Related Party, Type [Extensible Enumeration]			Affiliated Entity	Affiliated Entity
Virginia Electric and Power Company | Related Party | Medical Coverage for Local retirees | Amounts Associated with the Dominion Retiree Health and Welfare Plan
Related Party Transaction [Line Items]
Other receivables, noncurrent			$ 518,000,000	$ 431,000,000
Other Receivable, after Allowance for Credit Loss, Noncurrent, Related Party, Type [Extensible Enumeration]			Affiliated Entity	Affiliated Entity
Virginia Electric and Power Company | Affiliated Entity
Related Party Transaction [Line Items]
Derivative assets			$ 33,000,000	$ 29,000,000
Derivative liabilities			$ 31,000,000	$ 6,000,000
Virginia Electric and Power Company | Principal Owner | Short-Term Borrowing Arrangements
Related Party Transaction [Line Items]
Weighted- average interest rate percentage			4.68%	0.26%
Virginia Electric and Power Company | Principal Owner | Related Party | Short-Term Borrowing Arrangements
Related Party Transaction [Line Items]
Payables to affiliates			$ 2,000,000,000	$ 699,000,000
Virginia Electric and Power Company | Revolving Credit Facility
Related Party Transaction [Line Items]
Revolving credit facility maximum borrowing capacity						$ 3,000,000,000
[1] This credit facility matures in June 2026, with the potential to be extended by the borrowers to June 2028, and can be used by the borrowers under the credit facility to support bank borrowings and the issuance of commercial paper, as well as to support up to a combined $ 2.0 billion of letters of credit. See Note 9 for amounts attributable to related parties. See Note 25 for amounts attributable to affiliates. The full amount of the facility is available to Virginia Power, less any amounts outstanding to co-borrowers Dominion Energy, Questar Gas and DESC. The sub-limit for Virginia Power is set pursuant to the terms of the facility but can be changed at the option of the borrowers multiple times per year. At December 31, 2022, the sub-limit for Virginia Power was $ 1.75 billion. If Virginia Power has liquidity needs in excess of its sub-limit, the sub-limit may be changed or such needs may be satisfied through short-term intercompany borrowings from Dominion Energy. This credit facility matures in June 2026, with the potential to be extended by the borrowers to June 2028. The credit facility can be used to support bank borrowings and the issuance of commercial paper, as well as to support up to $ 2.0 billion (or the sub-limit, whichever is less) of letters of credit.

Related-Party Transactions (Det

Related-Party Transactions (Detail) - USD ($) $ in Millions		3 Months Ended								12 Months Ended
		Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022		Dec. 31, 2021		Dec. 31, 2020
Related Party Transaction [Line Items]
Operating expenses										$ 13,178		$ 9,108		$ 10,518
Operating revenue		$ 3,810	$ 3,963	$ 3,059	$ 3,113	$ 3,061	$ 2,815	$ 2,601	$ 2,943	13,945		11,420		11,919
Virginia Electric and Power Company
Related Party Transaction [Line Items]
Operating expenses										7,606		4,973		6,077
Operating revenue		$ 2,437	$ 2,875	$ 2,175	$ 2,167	$ 1,923	$ 1,976	$ 1,741	$ 1,830	9,654	[1]	7,470	[1]	7,763	[1]
Virginia Electric and Power Company | Related Party | Commodity Purchases from Affiliates
Related Party Transaction [Line Items]
Operating expenses										$ 1,423		$ 742		$ 569
Operating Cost and Expense, Related Party, Type [Extensible Enumeration]										Affiliated Entity [Member]		Affiliated Entity [Member]		Affiliated Entity [Member]
Virginia Electric and Power Company | Related Party | Services provided by affiliates
Related Party Transaction [Line Items]
Operating expenses	[2]									$ 519		$ 494		$ 455
Operating Cost and Expense, Related Party, Type [Extensible Enumeration]										Affiliated Entity [Member]		Affiliated Entity [Member]		Affiliated Entity [Member]
Virginia Electric and Power Company | Related Party | Services provided to affiliates
Related Party Transaction [Line Items]
Operating revenue										$ 18		$ 18		$ 18
Revenue, Related Party, Type [Extensible Enumeration]										Affiliated Entity [Member]		Affiliated Entity [Member]		Affiliated Entity [Member]
[1] See Note 25 for amounts attributable to affiliates. Includes capitalized expenditures of $ 177 million, $ 161 million and $ 141 million for the years ended December 31, 2022, 2021 and 2020, respectively.

Related-Party Transactions (Par

Related-Party Transactions (Parenthetical) (Detail) - Virginia Electric and Power Company - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Related Party Transaction [Line Items]
Capital expenditures	$ 4,909	$ 3,521	$ 3,138
Services provided by affiliates | Affiliated Entity
Related Party Transaction [Line Items]
Capital expenditures	$ 177	$ 161	$ 141

Operating Segments - Dominion E

Operating Segments - Dominion Energy (Narrative) (Detail) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	Dec. 31, 2022	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Asset early retirement expense				$ 125	$ 155
Charges associated with impairment of nonregulated solar generation facilities net of tax	$ 1,100
Gain (loss) on investments				(505)	639	$ 412
Loss associated with sale of Kewaunee, after tax		$ 513
Charge for RGGI compliance cost, after tax		134
Charge in connection with comprehensive settlement agreement for fuel expenses, after-tax		$ 142
Charges associated with the settlement of the South Carolina electric base rate case, after tax			$ 199
Operating Segments
Segment Reporting Information [Line Items]
After- tax net benefits (expenses)				(2,900)	(485)	(1,200)
Charge associated with storm damage and service restoration				125
Charge associated with storm damage and service restoration, after tax				93
Write-off of inventory charge				40
Write-off of inventory charge, after tax				30
Operating Segments | Nuclear Decommissioning Trust Fund
Segment Reporting Information [Line Items]
Gain (loss) on investments				559	568	335
Gain (loss) on investments, after tax				451	445	264
Corporate and Other | Operating Segments
Segment Reporting Information [Line Items]
After- tax net benefits (expenses)				(1,700)	705	(2,900)
After- tax net benefits (expenses) for specific items				(1,700)	821	(2,700)
Dominion Energy South Carolina Inc | Operating Segments
Segment Reporting Information [Line Items]
Litigation settlement expense					70	117
Litigation settlement expense, after tax					53	93
Charges associated with the settlement of the South Carolina electric base rate case					266
Charges associated with the settlement of the South Carolina electric base rate case, after tax					199
Dominion Energy Virginia | Operating Segments
Segment Reporting Information [Line Items]
Charge for expected CCRO						130
Charge for expected CCRO, net of tax						97
Charge for RGGI compliance cost				213
Charge for RGGI compliance cost, after tax				159
Charge in connection with comprehensive settlement agreement for fuel expenses				191
Charge in connection with comprehensive settlement agreement for fuel expenses, after-tax				142
Benefit for change in expected CCRO reserve					130
Benefit for change in expected CCRO reserve, after tax					97
Charges associated with budget process related to customer arrears					77
Charges associated with budget process related to customer arrears, after tax					57
Charge associated with storm damage and service restoration					68
Charge associated with storm damage and service restoration, after tax				87	50
Amortization of regulatory asset				243	61
Amortization of regulatory asset after tax				181	45
Charges for Dismantling cost				167
Charges for Dismantling cost, after tax				124
Loss from unbilled revenue reduction					151
Loss from unbilled revenue reduction, after tax					112
Net charge associated with settlement of the 2021 Triennial Review					125
Net charge associated with settlement of the 2021 Triennial Review, after tax					93
Charges associated with legislation enacted related to customer arrears						127
Charges associated with legislation enacted related to customer arrears, net of tax						94
Write-off of inventory charge, after tax				14
Dominion Energy Virginia | Operating Segments | Nuclear Decommissioning Trust Fund
Segment Reporting Information [Line Items]
Gain (loss) on investments, after tax				(58)	55	27
Dominion Energy Virginia | Operating Segments | Electric Generation Facilities
Segment Reporting Information [Line Items]
Asset early retirement expense						751
Asset early retirement expense after tax						564
Contracted Energy | Operating Segments
Segment Reporting Information [Line Items]
Charges associated with impairment of nonregulated solar generation facilities				1,500
Charges associated with impairment of nonregulated solar generation facilities net of tax				1,100
Charge associated with the sale of Fowler Ridge						221
Charge associated with the sale of Fowler Ridge, net of tax						171
Loss associated with sale of Kewaunee				649
Loss associated with sale of Kewaunee, after tax				513
Loss related to economic hedging activities					337
Loss related to economic hedging activities, after tax					254
Net loss on the sale of non-wholly-owned nonregulated solar facilities					211
Net loss on the sale of non-wholly-owned nonregulated solar facilities after tax					161
Charge associated with storm damage and service restoration, after tax				6
Charge associated with revision in estimated recovery of spent nuclear fuel costs associated with the decommissioning of Kewaunee					44
Charge associated with revision in estimated recovery of spent nuclear fuel costs associated with the decommissioning of Kewaunee, after tax					35
Charge associated with certain nonregulated solar generation facilities						405
Charge associated with certain nonregulated solar generation facilities, net of tax						325
Gain related to economic hedging activities				67
Gain related to economic hedging activities after tax				49
Write-off of inventory charge, after tax				16
Contracted Energy | Operating Segments | Nuclear Decommissioning Trust Fund
Segment Reporting Information [Line Items]
Gain (loss) on investments, after tax				$ 393	$ 390	$ 237

Operating Segments (Schedule of

Operating Segments (Schedule of Segment Reporting Information, by Segment) (Detail) - USD ($) $ in Millions			1 Months Ended	3 Months Ended								12 Months Ended
		Nov. 30, 2020	Dec. 31, 2021	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022		Dec. 31, 2021		Dec. 31, 2020
Segment Reporting Information [Line Items]
Operating Revenue				$ 3,810	$ 3,963	$ 3,059	$ 3,113	$ 3,061	$ 2,815	$ 2,601	$ 2,943	$ 13,945		$ 11,420		$ 11,919
Depreciation, depletion and amortization												2,442		2,103		1,991
Equity in earnings of equity method investees												21		15		(1)
Interest income (expense)												109		95		101
Interest and related charges (benefit)												1,002		1,255		1,339
Income tax expense (benefit)		$ 336	$ 173									(148)		239		(59)
Net Income (Loss) From Discontinued Operations Including Noncontrolling Interest				197	152	212	411	717	170	155	315	972	[1],[2]	1,357	[1],[2]	(1,334)	[1],[2]
Net income (loss) attributable to Dominion Energy				(42)	$ 778	$ (453)	$ 711	1,341	$ 654	$ 285	$ 1,008	994		3,288		(401)
Investment in equity method affiliates	[3]		162	295				162				295		162
Capital expenditures												7,758		6,061		6,331
Total assets			99,590	104,243				99,590				104,243		99,590
Operating Segments
Segment Reporting Information [Line Items]
Operating Revenue												13,945		11,420		11,951
Adjustments & Eliminations
Segment Reporting Information [Line Items]
Operating Revenue												0		60		49
Depreciation, depletion and amortization												0		0		0
Equity in earnings of equity method investees												0		0		0
Interest income (expense)												(50)		(19)		(47)
Interest and related charges (benefit)												(50)		(19)		(47)
Income tax expense (benefit)												0		0		0
Net Income (Loss) From Discontinued Operations Including Noncontrolling Interest												0		0		0
Net income (loss) attributable to Dominion Energy												0		0		0
Investment in equity method affiliates	[3]		0	0				0				0		0
Capital expenditures												0		0		0
Total assets			(3,500)	(5,500)				(3,500)				(5,500)		(3,500)
Intersegment revenue
Segment Reporting Information [Line Items]
Operating Revenue												0		0		(32)
Intersegment revenue
Segment Reporting Information [Line Items]
Operating Revenue												(856)		(897)		(942)
Eliminations
Segment Reporting Information [Line Items]
Operating Revenue												(856)		(837)		(893)
Dominion Energy Virginia
Segment Reporting Information [Line Items]
Operating Revenue												9,643		7,976		7,763
Dominion Energy Virginia | Operating Segments
Segment Reporting Information [Line Items]
Operating Revenue												9,658		7,990		7,779
Depreciation, depletion and amortization												1,452		1,296		1,245
Equity in earnings of equity method investees												0		0		0
Interest income (expense)												17		11		11
Interest and related charges (benefit)												645		535		524
Income tax expense (benefit)												411		467		500
Net Income (Loss) From Discontinued Operations Including Noncontrolling Interest												0		0		0
Net income (loss) attributable to Dominion Energy												2,007		1,914		1,884
Investment in equity method affiliates	[3]		0	0				0				0		0
Capital expenditures												5,187		3,756		3,372
Total assets			50,000	55,300				50,000				55,300		50,000
Dominion Energy Virginia | Intersegment revenue
Segment Reporting Information [Line Items]
Operating Revenue												(15)		(14)		(16)
Dominion Energy South Carolina
Segment Reporting Information [Line Items]
Operating Revenue												3,330		2,975		2,787
Dominion Energy South Carolina | Operating Segments
Segment Reporting Information [Line Items]
Operating Revenue												3,323		2,968		2,782
Depreciation, depletion and amortization												507		486		474
Equity in earnings of equity method investees												0		(3)		(1)
Interest income (expense)												6		10		12
Interest and related charges (benefit)												220		206		219
Income tax expense (benefit)												132		125		107
Net Income (Loss) From Discontinued Operations Including Noncontrolling Interest												0		0		0
Net income (loss) attributable to Dominion Energy												505		437		419
Investment in equity method affiliates	[3]		0	0				0				0		0
Capital expenditures												708		694		700
Total assets			16,400	17,200				16,400				17,200		16,400
Dominion Energy South Carolina | Intersegment revenue
Segment Reporting Information [Line Items]
Operating Revenue												7		7		5
Contracted Energy
Segment Reporting Information [Line Items]
Operating Revenue												908		1,085		1,071
Contracted Energy | Operating Segments
Segment Reporting Information [Line Items]
Operating Revenue												890		1,018		1,019
Depreciation, depletion and amortization												123		162		182
Equity in earnings of equity method investees												2		(2)		(5)
Interest income (expense)												75		81		91
Interest and related charges (benefit)												18		42		75
Income tax expense (benefit)												64		49		(24)
Net Income (Loss) From Discontinued Operations Including Noncontrolling Interest												0		0		0
Net income (loss) attributable to Dominion Energy												173		232		202
Investment in equity method affiliates	[3]		74	103				74				103		74
Capital expenditures												683		420		730
Total assets			10,200	7,700				10,200				7,700		10,200
Contracted Energy | Intersegment revenue
Segment Reporting Information [Line Items]
Operating Revenue												18		67		52
Corporate and Other
Segment Reporting Information [Line Items]
Operating Revenue												920		221		1,191
Corporate and Other | Operating Segments
Segment Reporting Information [Line Items]
Operating Revenue												74		(616)		322
Depreciation, depletion and amortization												360		159		90
Equity in earnings of equity method investees												19		20		5
Interest income (expense)												61		12		34
Interest and related charges (benefit)												169		491		568
Income tax expense (benefit)												(755)		(402)		(642)
Net Income (Loss) From Discontinued Operations Including Noncontrolling Interest												972		1,357		(1,334)
Net income (loss) attributable to Dominion Energy												(1,691)		705		(2,906)
Investment in equity method affiliates	[3]		88	192				88				192		88
Capital expenditures												1,180		1,191		1,529
Total assets			$ 26,500	$ 29,500				$ 26,500				29,500		26,500
Corporate and Other | Intersegment revenue
Segment Reporting Information [Line Items]
Operating Revenue												$ 846		$ 837		$ 869
[1] Includes income tax expense (benefit) of $ 225 million, $ 374 million and $( 61 ) million for the years ended December 31, 2022, 2021 and 2020, respectively. See Note 9 for amounts attributable to related parties. Excludes liability to Atlantic Coast Pipeline.

Operating Segments - Virginia P

Operating Segments - Virginia Power (Narrative) (Detail) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Jun. 30, 2022	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Charge for RGGI compliance cost, after tax	$ 134
Charge in connection with comprehensive settlement agreement for fuel expenses, after-tax	142
Gain (loss) on investments			$ (505)	$ 639	$ 412
Benefit for change in CCRO reserve, after tax		$ 97
Virginia Electric and Power Company
Segment Reporting Information [Line Items]
Charge for RGGI compliance cost, after tax	134
Charge in connection with comprehensive settlement agreement for fuel expenses, after-tax	$ 142
Benefit for change in CCRO reserve, after tax		$ 97
Operating Segments
Segment Reporting Information [Line Items]
After- tax net expenses			(2,900)	(485)	(1,200)
Charge associated with storm damage and service restoration			125
Charge associated with storm damage and service restoration, after tax			93
Operating Segments | Nuclear Decommissioning Trust Fund
Segment Reporting Information [Line Items]
Gain (loss) on investments			559	568	335
Gain (loss) on investments, after tax			451	445	264
Operating Segments | Virginia Electric and Power Company
Segment Reporting Information [Line Items]
Asset early retirement expense					751
Asset early retirement expense after tax					559
Charges associated with budget process related to customer arrears				77
Charges associated with budget process related to customer arrears, after tax				57
Charge associated with storm damage and service restoration			117	68
Charge associated with storm damage and service restoration, after tax			87	50
Loss from unbilled revenue reduction				151
Loss from unbilled revenue reduction, after tax				112
Net charge associated with settlement of the 2021 Triennial Review				125
Net charge associated with settlement of the 2021 Triennial Review, after tax				93
Amortization of regulatory asset			243	61
Amortization of regulatory asset after tax			181	45
Charge for RGGI compliance cost			213
Charge for RGGI compliance cost, after tax			159
Charge in connection with comprehensive settlement agreement for fuel expenses			191
Charge in connection with comprehensive settlement agreement for fuel expenses, after-tax			142
Charges for Dismantling cost			167
Charges for Dismantling cost, after tax			124
Benefit for change in CCRO reserve				130
Benefit for change in CCRO reserve, after tax				97
Charge for expected CCRO					130
Charge for expected CCRO, net of tax					97
Charges associated with legislation enacted related to customer arrears					127
Charges associated with legislation enacted related to customer arrears, net of tax					94
Operating Segments | Virginia Electric and Power Company | Nuclear Decommissioning Trust Fund
Segment Reporting Information [Line Items]
Gain (loss) on investments			(78)
Gain (loss) on investments, after tax			(58)
Operating Segments | Corporate and Other
Segment Reporting Information [Line Items]
After- tax net expenses			(1,700)	705	(2,900)
After- tax net expenses for specific items			(1,700)	821	(2,700)
Operating Segments | Corporate and Other | Virginia Electric and Power Company
Segment Reporting Information [Line Items]
After- tax net expenses			(792)	(202)	(863)
After- tax net expenses for specific items			$ (773)	$ (202)	$ (915)

Operating Segments (Schedule _2

Operating Segments (Schedule of Segment Reporting Information, by Segment, Virginia Power) (Detail) - USD ($) $ in Millions			1 Months Ended	3 Months Ended								12 Months Ended
		Nov. 30, 2020	Dec. 31, 2021	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022		Dec. 31, 2021		Dec. 31, 2020
Segment Reporting Information [Line Items]
Operating Revenue				$ 3,810	$ 3,963	$ 3,059	$ 3,113	$ 3,061	$ 2,815	$ 2,601	$ 2,943	$ 13,945		$ 11,420		$ 11,919
Depreciation and amortization												2,442		2,103		1,991
Interest income												109		95		101
Interest and related charges (benefit)												1,002		1,255		1,339
Income tax expense (benefit)		$ 336	$ 173									(148)		239		(59)
Net income (loss)				(42)	778	(453)	711	1,341	654	285	1,008	994		3,288		(401)
Capital expenditures												7,758		6,061		6,331
Total assets			99,590	104,243				99,590				104,243		99,590
Dominion Energy Virginia
Segment Reporting Information [Line Items]
Operating Revenue												9,643		7,976		7,763
Corporate and Other
Segment Reporting Information [Line Items]
Operating Revenue												920		221		1,191
Virginia Electric and Power Company
Segment Reporting Information [Line Items]
Operating Revenue				2,437	2,875	2,175	2,167	1,923	1,976	1,741	1,830	9,654	[1]	7,470	[1]	7,763	[1]
Depreciation and amortization												1,736		1,364		1,252
Interest income												17		11		11
Interest and related charges (benefit)	[1]											642		534		516
Income tax expense (benefit)												191		397		229
Net income (loss)				240	$ 571	$ 47	$ 357	368	$ 556	$ 414	$ 374	1,215		1,712		1,021
Capital expenditures												5,187		3,756		3,372
Total assets			47,932	53,194				47,932				53,194		47,932
Virginia Electric and Power Company | Dominion Energy Virginia
Segment Reporting Information [Line Items]
Operating Revenue												9,643		7,976		7,763
Depreciation and amortization												1,452		1,296		1,245
Interest income												17		11		11
Interest and related charges (benefit)												645		535		524
Income tax expense (benefit)												411		467		500
Net income (loss)												2,007		1,914		1,884
Capital expenditures												5,187		3,756		3,372
Total assets			47,900	53,200				47,900				53,200		47,900
Virginia Electric and Power Company | Corporate and Other
Segment Reporting Information [Line Items]
Operating Revenue												11		(506)		0
Depreciation and amortization												284		68		7
Interest income												0		0		0
Interest and related charges (benefit)												(3)		(1)		(8)
Income tax expense (benefit)												(220)		(70)		(271)
Net income (loss)												(792)		(202)		(863)
Capital expenditures												0		0		$ 0
Total assets			$ 0	$ 0				$ 0				$ 0		$ 0
[1] See Note 25 for amounts attributable to affiliates.

Quarterly Financial Data (Una_3

Quarterly Financial Data (Unaudited) - Schedule of Quarterly Results of Operations (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022		Dec. 31, 2021		Dec. 31, 2020
Quarterly Financial Information Disclosure [Line Items]
Operating revenue	$ 3,810	$ 3,963	$ 3,059	$ 3,113	$ 3,061	$ 2,815	$ 2,601	$ 2,943	$ 13,945		$ 11,420		$ 11,919
Income (loss) from operations									767		2,312		1,401
Income (loss) from continuing operations	(409)	995	(461)	642	697	766	259	589
Net income (loss) from continuing operations including noncontrolling interests	(239)	626	(665)	300	628	496	140	693	22		1,957		784
Net income from discontinued operations including noncontrolling interest	197	152	212	411	717	170	155	315	972	[1],[2]	1,357	[1],[2]	(1,334)	[1],[2]
Net income (loss) including noncontrolling interests	(42)	778	(453)	711	1,345	666	295	1,008	994		3,314		(550)
Net income (loss) attributable to Dominion Energy	$ (42)	$ 778	$ (453)	$ 711	$ 1,341	$ 654	$ 285	$ 1,008	$ 994		$ 3,288		$ (401)
Basic EPS:
Net income (loss) from continuing operations	$ (0.31)	$ 0.73	$ (0.84)	$ 0.34	$ 0.75	$ 0.58	$ 0.14	$ 0.84	$ (0.09)		$ 2.3		$ 1.17
Net income from discontinued operations	0.24	0.18	0.26	0.5	0.88	0.21	0.19	0.39	1.18		1.68		(1.73)
Net income (loss) attributable to Dominion Energy	(0.07)	0.91	(0.58)	0.84	1.63	0.79	0.33	1.23	1.09		3.98		(0.56)
Diluted EPS:
Net income (loss) from continuing operations	(0.31)	0.73	(0.84)	0.34	0.75	0.58	0.14	0.84	(0.09)		2.3		1.16
Net income from discontinued operations	0.24	0.18	0.26	0.5	0.88	0.21	0.19	0.39	1.18		1.68		(1.73)
Net income (loss) attributable to Dominion Energy	(0.07)	0.91	(0.58)	0.84	1.63	0.79	0.33	1.23	1.09		3.98		(0.57)
Dividends declared per common share	0.63	0.63	0.63	0.63	0.6675	0.6675	0.6675	0.6675	$ 2.67		$ 2.52		$ 3.45
Series A
Diluted EPS:
Dividends declared per preferred share			2.917	4.375	4.375	4.375	4.375	4.375
Series B
Diluted EPS:
Dividends declared per preferred share	11.625	11.625	11.625	11.625	11.625	$ 11.625	$ 11.625	$ 11.625
Series C
Diluted EPS:
Dividends declared per preferred share	$ 10.875	$ 10.875	$ 10.875	$ 10.875	$ 2.6583
Virginia Power
Quarterly Financial Information Disclosure [Line Items]
Operating revenue	$ 2,437	$ 2,875	$ 2,175	$ 2,167	$ 1,923	$ 1,976	$ 1,741	$ 1,830	$ 9,654	[3]	$ 7,470	[3]	$ 7,763	[3]
Income (loss) from operations	448	802	236	562	601	777	571	548	2,048		2,497		1,686
Net income (loss) attributable to Dominion Energy	$ 240	$ 571	$ 47	$ 357	$ 368	$ 556	$ 414	$ 374	$ 1,215		$ 1,712		$ 1,021
[1] Includes income tax expense (benefit) of $ 225 million, $ 374 million and $( 61 ) million for the years ended December 31, 2022, 2021 and 2020, respectively. See Note 9 for amounts attributable to related parties. See Note 25 for amounts attributable to affiliates.

Quarterly Financial Data (Una_4

Quarterly Financial Data (Unaudited) (Narrative) (Detail) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2022	Jun. 30, 2022	Jun. 30, 2021	Mar. 31, 2021
Quarterly Financial Information Disclosure [Line Items]
Charges associated with impairment of nonregulated solar generation facilities net of tax	$ 1,100
Loss associated with sale of Kewaunee, after tax		$ 513
Charge in connection with comprehensive settlement agreement for fuel expenses, after-tax		142
Charge for RGGI compliance cost, after tax		134
Charges associated with the settlement of the South Carolina electric base rate case, after tax			$ 199
Unbilled revenue reduction, after tax				$ 112
Benefit for change in CCRO reserve, after tax				97
Virginia Power
Quarterly Financial Information Disclosure [Line Items]
Charge in connection with comprehensive settlement agreement for fuel expenses, after-tax		142
Charge for RGGI compliance cost, after tax		$ 134
Unbilled revenue reduction, after tax				112
Benefit for change in CCRO reserve, after tax				$ 97