Dominion Energy (D) 10-Q 4 Nov 22 2022 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2022	Oct. 28, 2022
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2022
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q3
Title of 12(b) Security	Common Stock, no par value
Trading Symbol	D
Security Exchange Name	NYSE
Document Quarterly Report	true
Document Transition Report	false
Entity Interactive Data Current	Yes
Entity Incorporation, State or Country Code	VA
Entity Registrant Name	DOMINION ENERGY, INC.
Entity Central Index Key	0000715957
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		833,275,205
Entity Current Reporting Status	Yes
Entity Shell Company	false
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	819-2000
Virginia Electric and Power Company
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2022
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q3
Document Quarterly Report	true
Document Transition Report	false
Entity Interactive Data Current	Yes
Entity Incorporation, State or Country Code	VA
Entity Registrant Name	VIRGINIA ELECTRIC AND POWER COMPANY
Entity Central Index Key	0000103682
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		274,723
Entity Current Reporting Status	Yes
Entity Shell Company	false
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	819-2000

Consolidated Statements of Inco

Consolidated Statements of Income (Unaudited) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Operating Revenue		$ 4,386	$ 3,176	$ 12,261	$ 10,084
Operating Expenses
Electric fuel and other energy-related purchases		1,217	703	2,625	1,740
Purchased electric capacity		16	26	45	62
Purchased gas		138	60	985	665
Other operations and maintenance		991	927	3,030	2,808
Depreciation, depletion and amortization		727	621	2,120	1,833
Other taxes		231	223	719	702
Impairment of assets and other charges (benefits)		21	(222)	426	194
Losses (gains) on sales of assets		(27)	(3)	581	(2)
Total operating expenses		3,314	2,335	10,531	8,002
Income from operations		1,072	841	1,730	2,082
Earnings from equity method investees		92	69	255	214
Other income (expense)		70	133	(171)	732
Interest and related charges		329	407	550	978
Income from continuing operations including noncontrolling interests before income tax expense		905	636	1,264	2,050
Income tax expense		124	35	243	200
Net Income From Continuing Operations		781	601	1,021	1,850
Net Income (Loss) From Discontinued Operations	[1]	(3)	65	15	119
Net Income Including Noncontrolling Interests		778	666	1,036	1,969
Noncontrolling Interests			12		22
Net Income (Loss)		778	654	1,036	1,947
Amounts attributable to Dominion Energy
Net income from continuing operations		781	589	1,021	1,828
Net income (loss) from discontinued operations		$ (3)	$ 65	$ 15	$ 119
EPS - Basic
Net income from continuing operations		$ 0.91	$ 0.71	$ 1.16	$ 2.20
Net income (loss) from discontinued operations			0.08	0.02	0.15
Net income attributable to Dominion Energy		0.91	0.79	1.18	2.35
EPS - Diluted
Net income from continuing operations		0.91	0.71	1.15	2.20
Net income (loss) from discontinued operations			0.08	0.02	0.15
Net income attributable to Dominion Energy		$ 0.91	$ 0.79	$ 1.17	$ 2.35
Virginia Electric and Power Company
Operating Revenue	[2]	$ 2,875	$ 1,976	$ 7,217	$ 5,547
Operating Expenses
Electric fuel and other energy-related purchases	[2]	981	515	2,030	1,270
Purchased electric capacity		11	15	33	16
Affiliated suppliers		81	77	256	242
Other operations and maintenance		450	393	1,323	1,140
Depreciation, depletion and amortization		451	343	1,305	990
Other taxes		80	86	238	262
Impairment of assets and other charges (benefits)		19	(230)	432	(269)
Total operating expenses		2,073	1,199	5,617	3,651
Income from operations		802	777	1,600	1,896
Other income (expense)		3	21	(37)	93
Interest and related charges	[2]	168	136	461	400
Income before income tax expense		637	662	1,102	1,589
Income tax expense		66	106	127	245
Net Income (Loss)		$ 571	$ 556	$ 975	$ 1,344
[1] Includes income tax expense (benefit) of $(6) million for the three months ended September 30, 2021 and $4 million and $5 million for the nine months ended September 30, 2022 and 2021, respectively. There were no such amounts recorded during the three months ended September 30, 2022.

Consolidated Statements of In_2

Consolidated Statements of Income (Unaudited) (Parenthetical) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Statement [Abstract]
Income tax expense (benefit) from discontinued operations	$ 0	$ (6,000,000)	$ 4,000,000	$ 5,000,000

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Net income including noncontrolling interests		$ 778	$ 666	$ 1,036	$ 1,969
Net income		778	654	1,036	1,947
Other comprehensive income (loss), net of taxes:
Net deferred gains (losses) on derivatives-hedging activities	[1]	10	(2)	64	21
Changes in unrealized net gains (losses) on investment securities	[2]	(27)	4	(116)	(15)
Changes in net unrecognized pension and other postretirement benefit costs	[3]		(1)	30	5
Amounts reclassified to net income:
Net derivative (gains) losses-hedging activities	[4]	12	10	33	35
Net realized (gains) losses on investment securities	[5]	1	(3)	13	(5)
Net pension and other postretirement benefit costs	[6]	26	19	59	63
Changes in other comprehensive income from equity method investees	[7]		(3)	1	(3)
Total other comprehensive income (loss)		22	24	84	101
Comprehensive income including noncontrolling interests		800	690	1,120	2,070
Comprehensive income attributable to noncontrolling interests			12		22
Comprehensive income attributable to Dominion Energy		800	678	1,120	2,048
Virginia Electric and Power Company
Net income		571	556	975	1,344
Other comprehensive income (loss), net of taxes:
Net deferred gains (losses) on derivatives-hedging activities	[8]	13	(2)	57	18
Changes in unrealized net gains (losses) on investment securities	[9]	(4)		(14)	(2)
Amounts reclassified to net income:
Net derivative (gains) losses-hedging activities	[10]			1	1
Net realized (gains) losses on investment securities	[11]		(1)	(1)	(1)
Total other comprehensive income (loss)		9	(3)	43	16
Comprehensive income attributable to Dominion Energy		$ 580	$ 553	$ 1,018	$ 1,360
[1]Net of $ (4) . (1)

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income (Unaudited) (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Net deferred gain (losses) on derivative-hedging activities, tax	$ (4)		$ (22)	$ (8)
Changes in unrealized net gains (losses) on investment securities, tax	9		37	8
Changes in net unrecognized pension and other postretirement benefit costs, tax		$ (1)	(8)	(8)
Net derivative (gains) losses-hedging activities, tax	(4)	(4)	(11)	(12)
Net realized (gains) losses on investment securities, tax	(1)	1	(5)	2
Net pension and other postretirement benefit costs, tax	(9)	(6)	(21)	(22)
Changes in other comprehensive income from equity method investees, tax		1		1
Virginia Electric and Power Company
Net deferred gain (losses) on derivative-hedging activities, tax	(5)		(20)	(6)
Changes in unrealized net gains (losses) on investment securities, tax			4
Net derivative (gains) losses-hedging activities, tax	$ (1)	$ (1)	$ (1)	$ (1)

Consolidated Balance Sheets (Un

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions		Sep. 30, 2022	Dec. 31, 2021
Current Assets
Cash and cash equivalents		$ 163	$ 283	[1]
Customer receivables (less allowance for doubtful accounts)		2,170	2,219	[1]
Other receivables (less allowance for doubtful accounts)		275	349	[1]
Inventories		1,766	1,631	[1]
Margin deposit assets		829	678	[1]
Derivative assets		670	122	[1]
Regulatory assets		2,064	1,492	[1]
Other		640	470	[1]
Current assets held for sale		122	25	[1]
Total current assets		8,699	7,269	[1]
Investments
Nuclear decommissioning trust funds		5,590	7,950	[1]
Investment in equity method affiliates		2,940	2,932	[1]
Other		384	394	[1]
Total investments		8,914	11,276	[1]
Property, Plant and Equipment
Property, plant and equipment		90,785	86,503	[1]
Accumulated depreciation, depletion and amortization		(27,891)	(26,729)	[1]
Total property, plant and equipment, net		62,894	59,774	[1]
Deferred Charges and Other Assets
Goodwill		7,295	7,405	[1]
Derivative assets		1,799	491	[1]
Regulatory assets		8,961	8,643	[1]
Other		4,973	4,732	[1]
Total deferred charges and other assets		23,028	21,271	[1]
Total assets		103,535	99,590	[1]
Current Liabilities
Securities due within one year		2,889	841	[1]
Short-term debt		2,943	2,314	[1]
Accounts payable		1,105	1,197	[1]
Accrued interest, payroll and taxes		1,186	1,169	[1]
Derivative liabilities		1,179	359	[1]
Regulatory liabilities		1,019	986	[1]
Other	[2]	1,851	1,807	[1]
Total current liabilities		12,172	8,673	[1]
Long-Term Debt
Long-term debt		35,634	35,190	[1]
Junior subordinated notes		1,387	1,386	[1]
Supplemental credit facility borrowings		450
Other		691	850	[1]
Total long-term debt		38,162	37,426	[1]
Deferred Credits and Other Liabilities
Deferred income taxes and investment tax credits		7,003	6,658	[1]
Derivative liabilities		1,192	509	[1]
Regulatory liabilities		10,042	10,713	[1]
Other	[2]	6,391	6,693	[1]
Total deferred credits and other liabilities		24,628	24,573	[1]
Total liabilities		74,962	70,672	[1]
Commitments and Contingencies (see Note 17)				[1]
Preferred stock (see Note 16)	[1]		1,610
Shareholders' Equity
Preferred stock (see Note 16)		1,783	1,783	[1]
Common stock - no par	[3]	23,480	21,610	[1]
Retained earnings		4,684	5,373	[1]
Accumulated other comprehensive loss		(1,374)	(1,458)	[1]
Shareholders' equity		28,573	27,308	[1]
Total liabilities, mezzanine equity and shareholders' equity		103,535	99,590	[1]
Virginia Electric and Power Company
Current Assets
Cash and cash equivalents		18	26	[4]
Customer receivables (less allowance for doubtful accounts)		1,443	1,172	[4]
Other receivables (less allowance for doubtful accounts)		73	112	[4]
Affiliated receivables		84	37	[4]
Inventories		905	871	[4]
Margin deposit assets		498	167	[4]
Derivative assets	[5]	363	76	[4]
Regulatory assets		1,136	850	[4]
Other		139	39	[4]
Total current assets		4,659	3,350	[4]
Investments
Nuclear decommissioning trust funds		3,004	3,734	[4]
Other		3	3	[4]
Total investments		3,007	3,737	[4]
Property, Plant and Equipment
Property, plant and equipment		53,149	49,890	[4]
Accumulated depreciation, depletion and amortization		(16,028)	(15,234)	[4]
Total property, plant and equipment, net		37,121	34,656	[4]
Deferred Charges and Other Assets
Derivative assets	[6]	598	224
Regulatory assets		4,518	4,130	[4]
Other	[5]	2,683	2,059	[4]
Total deferred charges and other assets		7,201	6,189	[4]
Total assets		51,988	47,932	[4]
Current Liabilities
Securities due within one year		715	313	[4]
Short-term debt		1,009	745	[4]
Accounts payable		478	402	[4]
Payables to affiliates		168	121	[4]
Affiliated current borrowings		784	699	[4]
Accrued interest, payroll and taxes		408	274	[4]
Asset retirement obligations		303	191	[4]
Derivative liabilities	[5]	442	134	[4]
Regulatory liabilities		648	647	[4]
Other		744	567	[4]
Total current liabilities		5,699	4,093	[4]
Long-Term Debt
Long-term debt		14,914	13,453	[4]
Other		509	503	[4]
Total long-term debt		15,423	13,956	[4]
Deferred Credits and Other Liabilities
Deferred income taxes and investment tax credits		3,435	3,183	[4]
Asset retirement obligations		3,687	3,732	[4]
Derivative liabilities	[7]	475	336
Regulatory liabilities		5,269	5,740	[4]
Other	[5]	1,477	1,248	[4]
Total deferred credits and other liabilities		13,868	13,903	[4]
Total liabilities		34,990	31,952	[4]
Commitments and Contingencies (see Note 17)				[4]
Shareholders' Equity
Common stock - no par	[8]	5,738	5,738	[4]
Other paid-in capital		1,113	1,113	[4]
Retained earnings		10,145	9,170	[4]
Accumulated other comprehensive loss		2	(41)	[4]
Shareholders' equity		16,998	15,980	[4]
Total liabilities, mezzanine equity and shareholders' equity		$ 51,988	$ 47,932	[4]
[1]Dominion Energy’s Consolidated Balance Sheet at December 31, 2021 has been derived from the audited Consolidated Balance Sheet at that date.[2]See Note 10 for amounts attributable to related parties.[3]1.8 billion shares authorized; 833 million and 810 million shares outstanding at September 30, 2022 and December 31, 2021, respectively.[4]Virginia Power’s Consolidated Balance Sheet at December 31, 2021 has been derived from the audited Consolidated Balance Sheet at that date.[5]See Note 19 for amounts attributable to affiliates.[6]Noncurrent derivative assets are presented in other deferred charges and other assets in Virginia Power’s Consolidated Balance Sheets.

Consolidated Balance Sheets (_2

Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($)	Sep. 30, 2022	Dec. 31, 2021
Customer receivables, allowance for doubtful accounts	$ 38,000,000	$ 40,000,000
Other receivables, allowance for doubtful accounts	$ 4,000,000	$ 4,000,000
Common stock, shares authorized	1,800,000,000	1,800,000,000
Common stock, shares outstanding	833,000,000	810,000,000
Virginia Electric and Power Company
Customer receivables, allowance for doubtful accounts	$ 28,000,000	$ 28,000,000
Other receivables, allowance for doubtful accounts	$ 2,000,000	$ 2,000,000
Common stock, shares authorized	500,000	500,000
Common stock, shares outstanding	274,723	274,723

Consolidated Statements of Equi

Consolidated Statements of Equity (Unaudited) - USD ($) shares in Millions, $ in Millions	Total	Preferred Stock	Common Stock	Retained Earnings	AOCI	Total Shareholders' Equity	Noncontrolling Interests
Beginning balance at Dec. 31, 2020	$ 26,461	$ 2,387	$ 21,258	$ 4,189	$ (1,717)	$ 26,117	$ 344
Beginning balance (in shares) at Dec. 31, 2020		2	806
Net income (loss) including noncontrolling interests	1,969			1,947		1,947	22
Issuance of stock	292		$ 292			292
Issuance of stock (in shares)			4
Stock awards (net of change in unearned compensation)	24		$ 24			24
Preferred stock dividends (see Note 16)	(48)			(48)		(48)
Common stock dividends and distributions	(1,566)			(1,526)		(1,526)	(40)
Other comprehensive income, net of tax	101				101	101
Other	(1)		(1)			(1)
Ending balance at Sep. 30, 2021	27,232	$ 2,387	$ 21,573	4,562	(1,616)	26,906	326
Ending balance (in shares) at Sep. 30, 2021		2	810
Beginning balance at Jun. 30, 2021	26,884	$ 2,387	$ 21,369	4,434	(1,640)	26,550	334
Beginning balance (in shares) at Jun. 30, 2021		2	807
Net income (loss) including noncontrolling interests	666			654		654	12
Issuance of stock	195		$ 195			195
Issuance of stock (in shares)			3
Stock awards (net of change in unearned compensation)	9		$ 9			9
Preferred stock dividends (see Note 16)	(16)			(16)		(16)
Common stock dividends and distributions	(529)			(510)		(510)	(19)
Other comprehensive income, net of tax	24				24	24
Other	(1)						(1)
Ending balance at Sep. 30, 2021	27,232	$ 2,387	$ 21,573	4,562	(1,616)	26,906	$ 326
Ending balance (in shares) at Sep. 30, 2021		2	810
Beginning balance at Dec. 31, 2021	27,308	$ 1,783	$ 21,610	5,373	(1,458)	27,308
Beginning balance (in shares) at Dec. 31, 2021		2	810
Net income (loss) including noncontrolling interests	1,036			1,036		1,036
Issuance of stock	1,847		$ 1,847			1,847
Issuance of stock (in shares)			23
Stock awards (net of change in unearned compensation)	23		$ 23			23
Preferred stock dividends (see Note 16)	(72)			(72)		(72)
Common stock dividends and distributions	(1,653)			(1,653)		(1,653)
Other comprehensive income, net of tax	84				84	84
Ending balance at Sep. 30, 2022	28,573	$ 1,783	$ 23,480	4,684	(1,374)	28,573
Ending balance (in shares) at Sep. 30, 2022		2	833
Beginning balance at Jun. 30, 2022	28,297	$ 1,783	$ 23,427	4,483	(1,396)	28,297
Beginning balance (in shares) at Jun. 30, 2022		2	832
Net income (loss) including noncontrolling interests	778			778		778
Issuance of stock	44		$ 44			44
Issuance of stock (in shares)			1
Stock awards (net of change in unearned compensation)	9		$ 9			9
Preferred stock dividends (see Note 16)	(20)			(20)		(20)
Common stock dividends and distributions	(557)			(557)		(557)
Other comprehensive income, net of tax	22				22	22
Ending balance at Sep. 30, 2022	$ 28,573	$ 1,783	$ 23,480	$ 4,684	$ (1,374)	$ 28,573
Ending balance (in shares) at Sep. 30, 2022		2	833

Consolidated Statements of Eq_2

Consolidated Statements of Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Statement Of Stockholders Equity [Abstract]
Dividends declared per common share	$ 0.6675	$ 0.630	$ 2.025	$ 1.890

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Operating Activities
Net income (loss) including noncontrolling interests	$ 1,036	$ 1,969
Net income	1,036	1,947
Adjustments to reconcile net income including noncontrolling interests to net cash provided by operating activities:
Depreciation, depletion and amortization (including nuclear fuel)	2,334	2,058
Deferred income taxes and investment tax credits	269	199
Provision for refunds to electric utility customers		350
Impairment of assets and other charges	394	194
Losses (gains) on sales of assets and equity method investments	601
Net (gains) losses on nuclear decommissioning trust funds and other investments	658	(370)
Other adjustments	(85)	273
Changes in:
Accounts receivable	(56)	207
Inventories	(206)	(45)
Deferred fuel and purchased gas costs, net	(1,525)	(531)
Prepayments	(103)	(121)
Accounts payable	(54)	(29)
Accrued interest, payroll and taxes	28	51
Margin deposit assets and liabilities	(152)	(539)
Net realized and unrealized changes related to derivative activities	114	432
Pension and other postretirement benefits	(344)	(103)
Other operating assets and liabilities	(238)	(460)
Net cash provided by operating activities	2,671	3,535
Investing Activities
Plant construction and other property additions (including nuclear fuel)	(5,251)	(4,142)
Acquisition of solar development projects	(139)	(87)
Proceeds from sale of Hope	722
Proceeds from sales of securities	2,686	3,324
Purchases of securities	(2,479)	(3,288)
Repayment of Q-Pipe Transaction deposit		(1,265)
Proceeds from sale of assets and equity method investments	146
Contributions to equity method affiliates	(34)	(1,006)
Short-term deposit	(2,000)
Return of short-term deposit	2,000
Other	(170)	(143)
Net cash used in investing activities	(4,519)	(6,607)
Financing Activities
Issuance of short-term debt, net	629	2,990
Issuance of short-term notes		1,265
Repayment of supplemental 364-day credit facility borrowings		(225)
Issuance and remarketing of long-term debt	3,588	2,500
Repayment and repurchase of long-term debt	(1,213)	(2,708)
Supplemental credit facility borrowings	900	900
Repayment of supplemental credit facility borrowings	(450)
Series A Preferred Stock redemption	(1,610)
Issuance of common stock	1,744	144
Common dividend payments	(1,653)	(1,526)
Other	(155)	(248)
Net cash provided by (used in) financing activities	1,780	3,092
Increase (decrease) in cash, restricted cash and equivalents	(68)	20
Cash, restricted cash and equivalents at beginning of period	408	247
Cash, restricted cash and equivalents at end of period	340	267
Virginia Electric and Power Company
Operating Activities
Net income	975	1,344
Adjustments to reconcile net income including noncontrolling interests to net cash provided by operating activities:
Depreciation, depletion and amortization (including nuclear fuel)	1,428	1,109
Deferred income taxes and investment tax credits	183	198
Provision for refunds to customers		350
Impairment of assets and other charges (benefit)	403	(269)
Net (gains) losses on nuclear decommissioning trust funds and other investments	89	(46)
Other adjustments	(46)	127
Changes in:
Accounts receivable	(351)	(98)
Affiliated receivables and payables	1	(123)
Inventories	(34)	36
Deferred fuel and purchased gas costs, net	(1,207)	(396)
Prepayments	(4)	(5)
Accounts payable	90	66
Accrued interest, payroll and taxes	134	121
Margin deposit assets and liabilities	(331)	(121)
Net realized and unrealized changes related to derivative activities	88	8
Other operating assets and liabilities	(24)	(61)
Net cash provided by operating activities	1,394	2,240
Investing Activities
Plant construction and other property additions	(3,322)	(2,525)
Purchases of nuclear fuel	(169)	(73)
Acquisition of solar development projects	(51)	(61)
Proceeds from sales of securities	1,289	1,465
Purchases of securities	(1,334)	(1,470)
Other	(10)	(45)
Net cash used in investing activities	(3,597)	(2,709)
Financing Activities
Issuance (repayment) of affiliated current borrowings, net	85	(70)
Issuance (repayment) of short-term debt, net	264	851
Issuance and remarketing of long-term debt	2,338
Repayment and repurchase of long-term debt	(438)
Common dividend payments		(300)
Other	(52)	(8)
Net cash provided by (used in) financing activities	2,197	473
Increase (decrease) in cash, restricted cash and equivalents	(6)	4
Cash, restricted cash and equivalents at beginning of period	26	35
Cash, restricted cash and equivalents at end of period	$ 20	$ 39

Virginia Electric and Power Com

Virginia Electric and Power Company Consolidated Statements of Common Shareholder's Equity (Unaudited) - 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, 2020				$ (1,717)	$ 14,557		$ 5,738	$ 1,113	$ 7,758	$ (52)
Beginning balance (in shares) at Dec. 31, 2020			806,000				275
Net income (loss)	$ 1,947				1,344				1,344
Dividends					(300)				(300)
Other comprehensive income (loss), net of tax	101			101	16					16
Other	(1)		$ (1)
Ending balance at Sep. 30, 2021				(1,616)	15,617		$ 5,738	1,113	8,802	(36)
Ending balance (in shares) at Sep. 30, 2021			810,000				275
Beginning balance at Jun. 30, 2021				(1,640)	15,064		$ 5,738	1,113	8,246	(33)
Beginning balance (in shares) at Jun. 30, 2021			807,000				275
Net income (loss)	654				556				556
Other comprehensive income (loss), net of tax	24			24	(3)					(3)
Other	(1)
Ending balance at Sep. 30, 2021				(1,616)	15,617		$ 5,738	1,113	8,802	(36)
Ending balance (in shares) at Sep. 30, 2021			810,000				275
Beginning balance at Dec. 31, 2021	27,308	[1]		(1,458)	15,980	[2]	$ 5,738	1,113	9,170	(41)
Beginning balance (in shares) at Dec. 31, 2021			810,000				275
Net income (loss)	1,036				975				975
Other comprehensive income (loss), net of tax	84			84	43					43
Ending balance at Sep. 30, 2022	28,573			(1,374)	16,998		$ 5,738	1,113	10,145	2
Ending balance (in shares) at Sep. 30, 2022			833,000				275
Beginning balance at Jun. 30, 2022				(1,396)	16,418		$ 5,738	1,113	9,574	(7)
Beginning balance (in shares) at Jun. 30, 2022			832,000				275
Net income (loss)	778				571				571
Other comprehensive income (loss), net of tax	22			22	9					9
Ending balance at Sep. 30, 2022	$ 28,573			$ (1,374)	$ 16,998		$ 5,738	$ 1,113	$ 10,145	$ 2
Ending balance (in shares) at Sep. 30, 2022			833,000				275
[1]Dominion Energy’s Consolidated Balance Sheet at December 31, 2021 has been derived from the audited Consolidated Balance Sheet at that date.[2]Virginia Power’s Consolidated Balance Sheet at December 31, 2021 has been derived from the audited Consolidated Balance Sheet at that date.

Nature of Operations

Nature of Operations	9 Months Ended
	Sep. 30, 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 primarily in the eastern and Rocky Mountain regions of the U.S., nonregulated electric generation and a noncontrolling interest in Cove Point.

Significant Accounting Policies

Significant Accounting Policies	9 Months Ended
	Sep. 30, 2022
Accounting Policies [Abstract]
Significant Accounting Policies	Note 2. Significant Accounting Policies As permitted by the rules and regulations of the SEC, the Companies’ accompanying unaudited Consolidated Financial Statements contain certain condensed financial information and exclude certain footnote disclosures normally included in annual audited consolidated financial statements prepared in accordance with GAAP. These unaudited Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements and Notes in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021. In the Companies’ opinion, the accompanying unaudited Consolidated Financial Statements contain all adjustments necessary to present fairly their financial position at September 30, 2022, their results of operations and changes in equity for the three and nine months ended September 30, 2022 and 2021 and their cash flows for the nine months ended September 30, 2022 and 2021. Such adjustments are normal and recurring in nature unless otherwise noted. 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 and expenses for the periods presented. Actual results may differ from those estimates. The Companies’ accompanying unaudited 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) and Terra Nova Renewable Partners’ 33% interest in certain Dominion Energy nonregulated solar projects (through December 2021) are reflected as noncontrolling interest in Dominion Energy’s Consolidated Financial Statements. See Note 10 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021 for additional information. The results of operations for interim periods are not necessarily indicative of the results expected for the full year. Information for quarterly periods is affected by seasonal variations in sales, rate changes, electric fuel and other energy-related purchases, purchased gas expenses and other factors. Certain amounts in the Companies’ 2021 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. Amounts disclosed for Dominion Energy are inclusive of Virginia Power, where applicable. There have been no significant changes from Note 2 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021, with the exception of the items described below. Cash, Restricted Cash and Equivalents 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 nine months ended September 30, 2022 and 2021: Cash, Restricted Cash and Equivalents at End of Period Cash, Restricted Cash and Equivalents at Beginning of Period September 30, 2022 September 30, 2021 December 31, 2021 December 31, 2020 (millions) Dominion Energy Cash and cash equivalents (1) $ 163 $ 195 $ 283 $ 179 Restricted cash and equivalents (2)(3) 177 72 125 68 Cash, restricted cash and equivalents shown in the Consolidated Statements of Cash Flows $ 340 $ 267 $ 408 $ 247 Virginia Power Cash and cash equivalents $ 18 $ 38 $ 26 $ 35 Restricted cash and equivalents (3) 2 1 — — Cash, restricted cash and equivalents shown in the Consolidated Statements of Cash Flows $ 20 $ 39 $ 26 $ 35 (1) At September 30, 2021 and December 31, 2020, Dominion Energy had $15 million and $7 million of cash and cash equivalents included in current assets held for sale, respectively. No amounts were included in current assets held for sale at September 30, 2022 and December 31, 2021. (2) At September 30, 2021 and December 31, 2020, Dominion Energy had $22 million and $3 million of restricted cash and equivalents included in current assets held for sale, respectively. No amounts were included in current assets held for sale at September 30, 2022 and December 31, 2021. (3) Restricted cash and equivalents balances are presented within other current assets in the Companies’ Consolidated Balance Sheets. Supplemental Cash Flow Information The following table provides supplemental disclosure of cash flow information related to Dominion Energy: Nine Months Ended September 30, 2022 2021 (millions) Significant noncash investing and financing activities: (1) Accrued capital expenditures $ 745 $ 374 Leases (2) 129 75 (1) See Note 10 for noncash investing activities related to the acquisition of a noncontrolling interest in Dominion Privatization and Notes 16 and 17 for noncash financing activities related to the remarketing of Series A Preferred Stock and the issuance of common stock and transfer of property associated with the settlement of litigation. (2) Includes $29 million and $34 million of financing leases at September 30, 2022 and 2021, respectively, and $100 million and $41 million of operating leases at September 30, 2022 and 2021, respectively. The following table provides supplemental disclosure of cash flow information related to Virginia Power: Nine Months Ended September 30, 2022 2021 (millions) Significant noncash investing and financing activities: Accrued capital expenditures $ 454 $ 238 Leases (1) 113 59 (1) Includes $20 million and $24 million of financing leases at September 30, 2022 and 2021, respectively, and $93 million and $35 million of operating leases at September 30, 2022 and 2021, respectively Property, Plant and Equipment 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 $15 million ($11 million after-tax) and $45 million ($33 million after-tax) for the three and nine months ended September 30, 2022, respectively, and an increase in Dominion Energy’s EPS of $0.01 and $0.04 for the three and nine months ended September 30, 2022, respectively. The revision is expected to decrease Virginia Power’s annual depreciation expense by approximately $60 million ($45 million after-tax) and increase Dominion Energy’s EPS by approximately $0.05. For the three and nine months ended September 30, 2022, Virginia Power recorded charges of $18 million ($14 million after-tax) and $60 million ($45 million after-tax), respectively, associated with dismantling certain coal- and oil-fired generating units retired before the end of their useful lives, recorded in impairment of assets and other charges (benefits) in its Consolidated Statements of Income. Asset Retirement Obligations In the second quarter of 2021, Dominion Energy revised its estimated cash flow projections associated with the recovery of spent nuclear fuel costs for its AROs associated with the decommissioning of Kewaunee. As a result, Dominion Energy recorded a charge of $44 million ($35 million after-tax) within other operations and maintenance expense in its Consolidated Statements of Income.

Acquisitions and Dispositions

Acquisitions and Dispositions	9 Months Ended
	Sep. 30, 2022
Text Block [Abstract]
Acquisitions and Dispositions	Note 3. Acquisitions and Dispositions Disposition of Gas Transmission & Storage Operations In December 2021, Dominion Energy completed the sale of the Q-Pipe Group to Southwest Gas, as discussed in Note 3 to the Consolidated Financial Statements in the Company’s Annual Report on Form 10-K for the year ended December 31, 2021. In the first quarter of 2022, Dominion Energy recognized a gain of $27 million ($20 million after-tax) in discontinued operations in its Consolidated Statements of Income associated with 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, subject to extension. Dominion Energy recorded $2 million and $5 million associated with the transition services agreement in operating revenue in the Consolidated Statements of Income for the three and nine months ended September 30, 2022, respectively. 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: Three Months Ended September 30, 2021 Nine Months Ended September 30, 2021 Q-Pipe Group Q-Pipe Group (millions) Operating revenue $ 62 $ 188 Operating expense 24 52 Other income (1) 26 27 Interest and related charges 7 17 Income before income taxes ( 2 ) 57 146 Income tax expense 12 29 Net income attributable to Dominion Energy $ 45 $ 117 (1) Includes a $25 million benefit associated with the termination of the Q-Pipe Transaction in the third quarter of 2021. (2) Excludes $18 million income tax benefit recorded in the third quarter of 2021 associated with the GT&S Transaction. Capital expenditures and significant noncash items relating to the Q-Pipe Group included the following: Nine Months Ended September 30, 2021 (millions) Capital expenditures $ 26 Significant noncash items: Accrued capital expenditures 2 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 is treated as a stock sale for tax purposes. Upon closing, Dominion Energy recognized a pre-tax gain of $8 million, subject to 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 $89 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 20. All activity related to Hope prior, or not related, to closing, is included in Gas Distribution. 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 is 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 Assets.

Operating Revenue

Operating Revenue	9 Months Ended
	Sep. 30, 2022
Text Block [Abstract]
Operating Revenue	Note 4. Operating Revenue The Companies’ operating revenue consists of the following: Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 (millions) Dominion Energy Regulated electric sales: Residential $ 1,609 $ 1,281 $ 4,013 $ 3,453 Commercial 1,349 831 3,336 2,311 Industrial 253 194 670 547 Government and other retail 353 258 922 670 Wholesale 66 52 181 131 Nonregulated electric sales 345 271 948 754 Regulated gas sales: Residential 154 132 1,154 950 Commercial 83 61 462 346 Other 62 31 158 88 Nonregulated gas sales 2 7 7 74 Regulated gas transportation and storage 229 208 767 698 Other regulated revenues 76 47 195 187 Other nonregulated revenues (1) 74 61 183 149 Total operating revenue from contracts with customers 4,655 3,434 12,996 10,358 Other revenues (2)(3) (269 ) (258 ) (735 ) (274 ) Total operating revenue $ 4,386 $ 3,176 $ 12,261 $ 10,084 Virginia Power Regulated electric sales: Residential $ 1,238 $ 935 $ 3,069 $ 2,572 Commercial 1,105 604 2,696 1,715 Industrial 134 94 347 268 Government and other retail 335 241 874 625 Wholesale 38 31 101 79 Nonregulated electric sales 17 18 62 32 Other regulated revenues 64 37 195 165 Other nonregulated revenues (1)(4) 28 27 50 61 Total operating revenue from contracts with customers 2,959 1,987 7,394 5,517 Other revenues (2)(4) (84 ) (11 ) (177 ) 30 Total operating revenue $ 2,875 $ 1,976 $ 7,217 $ 5,547 (1) Includes sales which are considered to be goods transferred at a point in time of $10 million and $9 million for the three months ended September 30, 2022 and 2021, respectively, and $35 million and $24 million for the nine months ended September 30, 2022 and 2021, respectively, at Dominion Energy, primarily consisting of sales of commodities related to nonregulated extraction activities and other miscellaneous products. Additionally, sales of renewable energy credits were $21 million and $16 million for the three months ended September 30, 2022 and 2021, respectively, and $32 million and $29 million for the nine months ended September 30, 2022 and 2021, respectively, at Dominion Energy and $13 million for both the three months ended September 30, 2022 and 2021 and $13 million and $22 million for the nine months ended September 30, 2022 and 2021, respectively, at Virginia Power. ( 2 ) Includes alternative revenue of $20 million and $3 million at Dominion Energy and $20 million and $3 million at Virginia Power for the three months ended September 30, 2022 and 2021, respectively, and $90 million and $50 million at Dominion Energy and $47 million and $41 million at Virginia Power for the nine months ended September 30, 2022 and 2021, respectively. ( 3 ) (4) See Note 19 for amounts attributable to affiliates. The table below discloses the aggregate amount of the transaction price allocated to fixed-price performance obligations that are unsatisfied (or partially unsatisfied) at the end of the reporting period and when Dominion Energy expects to recognize this revenue. These revenues relate to contracts containing fixed prices where Dominion Energy will earn the associated revenue over time as it stands ready to perform services provided. This disclosure does not include revenue related to performance obligations that are part of a contract with original durations of one year or less. In addition, this disclosure does not include expected consideration related to performance obligations for which Dominion Energy elects to recognize revenue in the amount it has a right to invoice. Revenue expected to be recognized on multi-year contracts in place at September 30, 2022 2022 2023 2024 2025 2026 Thereafter Total (millions) Dominion Energy $ 18 $ 68 $ 61 $ 54 $ 48 $ 449 $ 698 At September 30, 2022 and December 31, 2021, Dominion Energy’s contract liability balances were $159 million and $124 million, respectively, and are recorded in other current liabilities and other deferred credits and other liabilities in the Consolidated Balance Sheets. At September 30, 2022 and December 31, 2021, Virginia Power’s contract liability balances were $43 million and $33 million, respectively, and are recorded in other current liabilities and other deferred credits and other liabilities in its Consolidated Balance Sheets. The Companies recognize revenue as they fulfill their obligations to provide service to their customers. During the nine months ended September 30, 2022 and 2021, Dominion Energy recognized revenue of $120 million and $124 million, respectively, from the beginning contract liability balances. During the nine months ended September 30, 2022 and 2021, Virginia Power recognized $33 million and $36 million, respectively, from the beginning contract liability balances.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2022
Income Tax Disclosure [Abstract]
Income Taxes	Note 5. Income Taxes 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 Nine Months Ended September 30, 2022 2021 2022 2021 U.S. statutory rate 21.0 % 21.0 % 21.0 % 21.0 % Increases (reductions) resulting from: Recognition of taxes - sale of subsidiary stock 7.3 — — — State taxes, net of federal benefit 4.7 2.0 4.4 4.5 Investment tax credits (6.4 ) (5.6 ) (8.9 ) (5.8 ) Production tax credits (0.7 ) (0.5 ) (1.0 ) (0.6 ) Reversal of excess deferred income taxes (6.1 ) (3.8 ) (3.7 ) (2.2 ) State legislative change — (1.0 ) — (1.0 ) Changes in state deferred taxes associated with assets held for sale 0.4 (0.5 ) — — AFUDC - equity (0.6 ) (0.5 ) (0.8 ) (0.5 ) Absence of tax on noncontrolling interest — (0.2 ) — — Other, net (0.4 ) (1.1 ) 0.5 — Effective tax rate 19.2 % 9.8 % 11.5 % 15.4 % 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 of September 30, 2022, there have been no material changes in the Companies’ unrecognized tax benefits. It is reasonably possible that recent case law and interactions with the taxing authority could result in a decrease in unrecognized tax benefits by up to $26 million during the next twelve months. 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. See Note 5 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021, for a discussion of these unrecognized tax benefits. The Companies’ 2021 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. Discontinued operations Income tax expense reflected in discontinued operations is $4 million and $5 million for the nine months ended September 30, 2022 and 2021, respectively. 2021 income taxes include a $15 million benefit related to finalizing income tax returns on the GT&S Transaction.

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2022
Earnings Per Share [Abstract]
Earnings Per Share	Note 6. Earnings Per Share The following table presents the calculation of Dominion Energy’s basic and diluted EPS: Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 (millions, except EPS) Net income attributable to Dominion Energy from continuing operations $ 781 $ 589 $ 1,021 $ 1,828 Preferred stock dividends (see Note 16) (20 ) (16 ) (72 ) (48 ) Net income attributable to Dominion Energy from continuing operations – Basic 761 573 949 1,780 Dilutive effect of 2019 Equity Units (1) — — 12 — Net income attributable to Dominion Energy from continuing operations - Diluted $ 761 $ 573 $ 961 $ 1,780 Net income (loss) attributable to Dominion Energy from discontinued operations - Basic & Diluted $ (3 ) $ 65 $ 15 $ 119 Average shares of common stock outstanding – Basic 832.6 808.7 820.6 807.1 Net effect of dilutive securities (2) 0.6 1.3 12.1 0.5 Average shares of common stock outstanding – Diluted 833.2 810.0 832.7 807.6 EPS from continuing operations – Basic $ 0.91 $ 0.71 $ 1.16 $ 2.20 EPS from discontinued operations – Basic — 0.08 0.02 0.15 EPS attributable to Dominion Energy – Basic $ 0.91 $ 0.79 $ 1.18 $ 2.35 EPS from continuing operations – Diluted $ 0.91 $ 0.71 $ 1.15 $ 2.20 EPS from discontinued operations – Diluted — 0.08 0.02 0.15 EPS attributable to Dominion Energy – Diluted $ 0.91 $ 0.79 $ 1.17 $ 2.35 (1) As discussed in Note 16, effective in June 2022 through its settlement 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 the three and nine months ended September 30, 2021. (2) Dilutive securities for the three and nine months ended September 30, 2022 consist primarily of the 2019 Equity Units through their settlement in June 2022 (applying the if converted method as updated effective January 2022), 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 (applying the treasury stock method). See Notes 16 and 17 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 Note 16 to the Consolidated Financial Statements in this report and Note 3 and Note 19 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021 for additional information. For the three and nine months ended September 30, 2021, the forward stock purchase contracts included within the 2019 Equity Units are 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 calculation of diluted EPS from continuing operations based upon the expectation that the conversion would settle in cash rather than through the issuance of Dominion Energy common stock and 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 of diluted EPS from continuing operations for the three and nine months ended September 30, 2021 based upon the expectation Dominion Energy would settle in cash, which occurred in July 2021, rather than through the issuance of Dominion Energy common stock.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	9 Months Ended
	Sep. 30, 2022
Equity [Abstract]
Accumulated Other Comprehensive Income (Loss)	Note 7. 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 Rate Total Derivative-Hedging Activities (1) Investment Securities (2) Pension and other postretirement benefit costs (3) Equity Method Investees (4) Total (millions) Three Months Ended September 30, 2022 Beginning balance $ — $ (283 ) $ (283 ) $ (40 ) $ (1,070 ) $ (3 ) $ (1,396 ) Other comprehensive income before reclassifications: gains (losses) — 10 10 (27 ) — — (17 ) Amounts reclassified from AOCI: (gains) losses Interest and related charges — 16 16 — — — 16 Other income (expense) — — — 2 35 — 37 Total — 16 16 2 35 — 53 Income tax expense (benefit) — (4 ) (4 ) (1 ) (9 ) — (14 ) Total, net of tax — 12 12 1 26 — 39 Net current period other comprehensive income (loss) — 22 22 (26 ) 26 — 22 Ending balance $ — $ (261 ) $ (261 ) $ (66 ) $ (1,044 ) $ (3 ) $ (1,374 ) Three Months Ended September 30, 2021 Beginning balance $ — $ (371 ) $ (371 ) $ 41 $ (1,309 ) $ (1 ) $ (1,640 ) Other comprehensive income before reclassifications: gains (losses) — (2 ) (2 ) 4 (1 ) (3 ) (2 ) Amounts reclassified from AOCI: (gains) losses Interest and related charges — 14 14 — — — 14 Other income (expense) — — — (4 ) 25 — 21 Total — 14 14 (4 ) 25 — 35 Income tax expense (benefit) — (4 ) (4 ) 1 (6 ) — (9 ) Total, net of tax — 10 10 (3 ) 19 — 26 Net current period other comprehensive income (loss) — 8 8 1 18 (3 ) 24 Ending balance $ — $ (363 ) $ (363 ) $ 42 $ (1,291 ) $ (4 ) $ (1,616 ) (1) Net of $87 million, $94 million, $121 million and $125 million tax at September 30, 2022, June 30, 2022, September 30, 2021 and June 30, 2021, respectively. (2) Net of $23 million, $14 million, $(11) million and $(12) million tax at September 30, 2022, June 30, 2022, September 30, 2021 and June 30, 2021, respectively. (3) Net of $367 million, $376 million, $448 million and $455 million tax at September 30, 2022, June 30, 2022, September 30, 2021 and June 30, 2021, respectively. (4) Net of $1 million, $1 million, $1 million and $— million tax at September 30, 2022, June 30, 2022, September 30, 2021 and June 30, 2021, respectively. Commodity Interest Rate Total Derivative-Hedging Activities (1) Investment Securities (2) Pension and other postretirement benefit costs (3) Equity Method Investees (4) Total (millions) Nine Months Ended September 30, 2022 Beginning balance $ — $ (358 ) $ (358 ) $ 37 $ (1,133 ) $ (4 ) $ (1,458 ) Other comprehensive income before reclassifications: gains (losses) — 64 64 (116 ) 30 1 (21 ) Amounts reclassified from AOCI: (gains) losses Interest and related charges — 44 44 — — — 44 Other income (expense) — — — 18 80 — 98 Total — 44 44 18 80 — 142 Income tax expense (benefit) — (11 ) (11 ) (5 ) (21 ) — (37 ) Total, net of tax — 33 33 13 59 — 105 Net current period other comprehensive income (loss) — 97 97 (103 ) 89 1 84 Ending balance $ — $ (261 ) $ (261 ) $ (66 ) $ (1,044 ) $ (3 ) $ (1,374 ) Nine Months Ended September 30, 2021 Beginning balance $ (1 ) $ (418 ) $ (419 ) $ 62 $ (1,359 ) $ (1 ) $ (1,717 ) Other comprehensive income before reclassifications: gains (losses) — 21 21 (15 ) 5 (3 ) 8 Amounts reclassified from AOCI: (gains) losses Purchased gas 1 — 1 — — — 1 Interest and related charges — 46 46 — — — 46 Other income (expense) — — — (7 ) 85 — 78 Total 1 46 47 (7 ) 85 — 125 Income tax expense (benefit) — (12 ) (12 ) 2 (22 ) — (32 ) Total, net of tax 1 34 35 (5 ) 63 — 93 Net current period other comprehensive income (loss) 1 55 56 (20 ) 68 (3 ) 101 Ending balance $ — $ (363 ) $ (363 ) $ 42 $ (1,291 ) $ (4 ) $ (1,616 ) (1) Net of $87 million, $119 million, $121 million and $141 million tax at September 30, 2022, December 31, 2021, September 30, 2021 and December 31, 2020, respectively. (2) Net of $23 million, $(10) million, $(11) million and $(21) million tax at September 30, 2022, December 31, 2021, September 30, 2021 and December 31, 2020, respectively. (3) Net of $367 million, $396 million, $448 million, and $478 million tax at September 30, 2022, December 31, 2021, September 30, 2021 and December 31, 2020, respectively. (4) Net of $1 million, $ 1 million, $1 million and $— tax at September 30, 2022, December 31, 2021, September 30, 2021 and December 31, 2020, respectively. Virginia Power The following table presents Virginia Power’s changes in AOCI (net of tax) and reclassifications out of AOCI by component: Interest Rate Total Derivative-Hedging Activities (1) Investment Securities (2) Total (millions) Three Months Ended September 30, 2022 Beginning balance $ — $ — $ (7 ) $ (7 ) Other comprehensive income before reclassifications: gains (losses) 13 13 (4 ) 9 Amounts reclassified from AOCI: (gains) losses Interest and related charges 1 1 — 1 Other income (expense) — — — — Total 1 1 — 1 Income tax expense (benefit) (1 ) (1 ) — (1 ) Total, net of tax — — — — Net current period other comprehensive income (loss) 13 13 (4 ) 9 Ending balance $ 13 $ 13 $ (11 ) $ 2 Three Months Ended September 30, 2021 Beginning balance $ (39 ) $ (39 ) $ 6 $ (33 ) Other comprehensive income before reclassifications: gains (losses) (2 ) (2 ) — (2 ) Amounts reclassified from AOCI: (gains) losses Interest and related charges 1 1 — 1 Other income (expense) — — (1 ) (1 ) Total 1 1 (1 ) — Income tax expense (benefit) (1 ) (1 ) — (1 ) Total, net of tax — — (1 ) (1 ) Net current period other comprehensive income (loss) (2 ) (2 ) (1 ) (3 ) Ending balance $ (41 ) $ (41 ) $ 5 $ (36 ) (1) Net of $(4) million, $— million, $14 million and $14 million tax at September 30, 2022, June 30, 2022, September 30, 2021 and June 30, 2021, respectively (2) Net of $4 million, $3 million, $(2) million and $(2) million tax at September 30, 2022, June 30, 2022, September 30, 2021 and June 30, 2021, respectively. Interest Rate Total Derivative-Hedging Activities (1) Investment Securities (2) Total (millions) Nine Months Ended September 30, 2022 Beginning balance $ (45 ) $ (45 ) $ 4 $ (41 ) Other comprehensive income before reclassifications: gains (losses) 57 57 (14 ) 43 Amounts reclassified from AOCI: (gains) losses Interest and related charges 2 2 — 2 Other income (expense) — — (1 ) (1 ) Total 2 2 (1 ) 1 Income tax expense (benefit) (1 ) (1 ) — (1 ) Total, net of tax 1 1 (1 ) — Net current period other comprehensive income (loss) 58 58 (15 ) 43 Ending balance $ 13 $ 13 $ (11 ) $ 2 Nine Months Ended September 30, 2021 Beginning balance $ (60 ) $ (60 ) $ 8 $ (52 ) Other comprehensive income before reclassifications: gains (losses) 18 18 (2 ) 16 Amounts reclassified from AOCI: (gains) losses Interest and related charges 2 2 — 2 Other income (expense) — — (1 ) (1 ) Total 2 2 (1 ) 1 Income tax expense (benefit) (1 ) (1 ) — (1 ) Total, net of tax 1 1 (1 ) — Net current period other comprehensive income (loss) 19 19 (3 ) 16 Ending balance $ (41 ) $ (41 ) $ 5 $ (36 ) (1) Net of $(4) million, $16 million, $14 million and $21 million tax at September 30, 2022, December 31, 2021, September 30, 2021 and December 31, 2020, respectively. (2) Net of $4 million, $(2) million, $(2) million and $(3) million tax at September 30, 2022, December 31, 2021, September 30, 2021 and December 31, 2020, respectively.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2022
Fair Value Disclosures [Abstract]
Fair Value Measurements	Note 8. Fair Value Measurements The Companies’ fair value measurements are made in accordance with the policies discussed in Note 6 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021. See Note 9 in this report for additional information about the Companies’ derivatives 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 Dominion Energy’s quantitative information about Level 3 fair value measurements at September 30, 2022. The range and weighted average are presented in dollars for market price inputs and percentages for price volatility. Fair Value (millions) Valuation Techniques Unobservable Input Range Weighted Average (1) Assets Physical and financial forwards: Natural gas (2) $ 1 Discounted cash flow Market price (per Dth) (3) (2) - 6 (1) FTRs 263 Discounted cash flow Market price (per MWh) (3) 1-19 5 Electricity 211 Discounted cash flow Market price (per MWh) (3) 28-199 51 Physical options: Natural gas (2) 24 Option model Market price (per Dth) (3) 4-17 10 Price volatility (4) 13%-70% 51% Total assets $ 499 Liabilities Physical and financial forwards: Natural gas (2) $ 12 Discounted cash flow Market price (per Dth) (3) (2)-8 1 FTRs 5 Discounted cash flow Market price (per MWh) (3) 1-10 4 Total liabilities $ 17 (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 In the second quarter of 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 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. See Note 10 for information regarding nonrecurring fair value measurements associated with Dominion Energy’s noncontrolling ownership interest in Dominion Privatization. Recurring Fair Value Measurements Dominion Energy The following table presents Dominion Energy’s assets and liabilities that are measured at fair value on a recurring basis for each hierarchy level, including both current and noncurrent portions: Level 1 Level 2 Level 3 Total (millions) At September 30, 2022 Assets Derivatives: Commodity $ — $ 371 $ 499 $ 870 Interest rate — 1,593 — 1,593 Foreign currency exchange rate — 6 — 6 Investments (1) Equity securities: U.S. 3,514 — — 3,514 Fixed income: Corporate debt instruments — 563 — 563 Government securities 159 1,067 — 1,226 Total assets $ 3,673 $ 3,600 $ 499 $ 7,772 Liabilities Derivatives: Commodity $ — $ 1,492 $ 17 $ 1,509 Interest rate — 475 — 475 Foreign currency exchange rate — 387 — 387 Total liabilities $ — $ 2,354 $ 17 $ 2,371 At December 31, 2021 Assets Derivatives: Commodity $ — $ 52 $ 230 $ 282 Interest rate — 323 — 323 Foreign currency exchange rate — 8 — 8 Investments (1) Equity securities: U.S. 5,241 — — 5,241 Fixed income: Corporate debt instruments — 881 — 881 Government securities 199 1,256 — 1,455 Cash equivalents and other (29 ) — — (29 ) Total assets $ 5,411 $ 2,520 $ 230 $ 8,161 Liabilities Derivatives: Commodity $ — $ 461 $ 8 $ 469 Interest rate — 399 — 399 Total liabilities $ — $ 860 $ 8 $ 868 (1) Includes investments held in the nuclear decommissioning and rabbi trusts. Excludes $238 million and $366 million of assets at September 30, 2022 and December 31, 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 Dominion Energy's assets and liabilities measured at fair value on a recurring basis and included in the Level 3 fair value category: Three Months Ended Nine Months Ended September 30, September 30, 2022 2021 2022 2021 (millions) Beginning balance $ 480 $ 62 $ 222 $ 103 Total realized and unrealized gains (losses): Included in earnings: Operating revenue — (6 ) — (8 ) Electric fuel and other energy-related purchases 181 29 346 12 Included in regulatory assets/liabilities 2 88 243 49 Settlements (181 ) (29 ) (346 ) (12 ) Purchases — — 17 — Ending balance $ 482 $ 144 $ 482 $ 144 There were $(6) million and $(8) million of unrealized gains and losses included in operating revenue in the Level 3 fair value category related to assets/liabilities still held at the reporting date for the three and nine months ended September 30, 2021, respectively, and no such amounts for the three and nine months ended September 30, 2022. Virginia Power The following table presents Virginia Power’s quantitative information about Level 3 fair value measurements at September 30, 2022. The range and weighted average are presented in dollars for market price inputs and percentages for price volatility. Fair Value (millions) Valuation Techniques Unobservable Input Range Weighted Average (1) Assets Physical and financial forwards: Natural gas (2) $ 1 Discounted cash flow Market price (per Dth) (3) (2) - 6 (1) FTRs 263 Discounted cash flow Market price (per MWh) (3) 1 - 19 5 Physical options: Natural gas (2) 24 Option model Market price (per Dth) (3) 4-17 10 Price volatility (4) 13%-70% 51 % Total assets $ 288 Liabilities Physical and financial forwards: Natural gas (2) $ 12 Discounted cash flow Market price (per Dth) (3) (2) - 5 1 FTRs 5 Discounted cash flow Market price (per MWh) (3) 1-10 4 Total liabilities $ 17 (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) The following table presents Virginia Power’s assets and liabilities that are measured at fair value on a recurring basis for each hierarchy level, including both current and noncurrent portions: Level 1 Level 2 Level 3 Total (millions) At September 30, 2022 Assets Derivatives: Commodity $ — $ 71 $ 288 $ 359 Interest rate — 596 — 596 Foreign currency exchange rate — 6 — 6 Investments (1) Equity securities: U.S. 1,870 — — 1,870 Fixed income: Corporate debt instruments — 372 — 372 Government securities 88 518 — 606 Total assets $ 1,958 $ 1,563 $ 288 $ 3,809 Liabilities Derivatives: Commodity $ — $ 486 $ 17 $ 503 Interest rate — 27 — 27 Foreign currency exchange rate — 387 — 387 Total liabilities $ — $ 900 $ 17 $ 917 At December 31, 2021 Assets Derivatives: Commodity $ — $ 36 $ 110 $ 146 Interest rate — 146 — 146 Foreign currency exchange rate — 8 — 8 Investments (1) Equity securities: U.S. 2,420 — — 2,420 Fixed income: Corporate debt instruments — 531 — 531 Government securities 93 506 — 599 Cash equivalents and other (3 ) — — (3 ) Total assets $ 2,510 $ 1,227 $ 110 $ 3,847 Liabilities Derivatives: Commodity $ — $ 125 $ 8 $ 133 Interest rate — 337 — 337 Total liabilities $ — $ 462 $ 8 $ 470 (1) Includes investments held in the nuclear decommissioning trusts. Excludes $150 million and $185 million of assets at September 30, 2022 and December 31, 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 Virginia Power’s assets and liabilities measured at fair value on a recurring basis and included in the Level 3 fair value category: Three Months Ended Nine Months Ended September 30, September 30, 2022 2021 2022 2021 (millions) Beginning balance $ 245 $ 74 $ 102 $ 103 Total realized and unrealized gains (losses): Included in earnings: Electric fuel and other energy-related purchases 142 27 293 10 Included in regulatory assets/liabilities 26 41 152 12 Settlements (142 ) (27 ) (293 ) (10 ) Purchases — — 17 — Ending balance $ 271 $ 115 $ 271 $ 115 There were no unrealized gains or losses included in earnings in the Level 3 fair value category relating to assets/liabilities still held at the reporting date for the three and nine months ended September 30, 2022 and 2021. 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, mandatorily redeemable preferred stock, 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: September 30, 2022 December 31, 2021 Carrying Amount Estimated Fair Value (1) Carrying Amount Estimated Fair Value (1) (millions) Dominion Energy Long-term debt (2) $ 38,487 $ 34,700 $ 35,996 $ 40,947 Supplemental credit facility borrowings 450 450 — — Junior subordinated notes (3) 1,387 1,338 1,386 1,470 Virginia Power Long-term debt (3) $ 15,618 $ 13,840 $ 13,753 $ 16,021 (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 includes 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 September 30, 2022. ( 3 ) Carrying amount includes current portions included in securities due within one year and amounts which represent the unamortized debt issuance costs, discount or premium.

Derivatives and Hedge Accountin

Derivatives and Hedge Accounting Activities	9 Months Ended
	Sep. 30, 2022
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Derivatives and Hedge Accounting Activities	Note 9. Derivatives and Hedge Accounting Activities The Companies’ accounting policies, objectives and strategies for using derivative instruments are discussed in Note 2 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021. See Note 8 in this report for additional information about fair value measurements and associated valuation methods for derivatives. Derivative assets and liabilities are presented gross on the Companies’ Consolidated Balance Sheets. 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 setoff through master netting arrangements, derivative clearing agreements and contract default provisions. In addition, the contracts are subject to conditional rights of setoff 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. 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 additional information regarding credit-related contingent features for the Companies’ derivative instruments. Dominion Energy Balance Sheet Presentation The tables below present Dominion Energy’s 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: September 30, 2022 December 31, 2021 Gross Amounts Not Offset in the Consolidated Balance Sheet Gross Amounts Not Offset in the Consolidated Balance Sheet Gross Assets Presented in the Consolidated Balance Sheet (1) Financial Instruments Cash Collateral Received Net Amounts Gross Assets Presented in the Consolidated Balance Sheet (1) Financial Instruments Cash Collateral Received Net Amounts (millions) Commodity contracts: Over-the-counter $ 367 $ 11 $ — $ 356 $ 153 $ 13 $ — $ 140 Exchange 292 287 — 5 9 7 — 2 Interest rate contracts: Over-the-counter 1,593 410 — 1,183 323 49 — 274 Foreign currency exchange rate contracts: Over-the-counter 6 6 — — 8 — — 8 Total derivatives, subject to a master netting or similar arrangement $ 2,258 $ 714 $ — $ 1,544 $ 493 $ 69 $ — $ 424 (1) Excludes $211 September 30, 2022 December 31, 2021 Gross Amounts Not Offset in the Consolidated Balance Sheet Gross Amounts Not Offset in the Consolidated Balance Sheet Gross Liabilities Presented in the Consolidated Balance Sheet (1) Financial Instruments Cash Collateral Paid Net Amounts Gross Liabilities Presented in the Consolidated Balance Sheet (1) Financial Instruments Cash Collateral Paid Net Amounts (millions) Commodity contracts: Over-the-counter $ 660 $ 17 $ 121 $ 522 $ 95 $ 13 $ 54 $ 28 Exchange 849 287 562 — 374 7 367 — Interest rate contracts: Over-the-counter 475 257 3 215 399 49 11 339 Foreign currency exchange rate contracts: Over-the-counter 387 153 — 234 — — — — Total derivatives, subject to a master netting or similar arrangement $ 2,371 $ 714 $ 686 $ 971 $ 868 $ 69 $ 432 $ 367 (1) There were no derivative liabilities that are not subject to master netting or similar arrangements at September 30, 2022 or December 31, 2021. Volumes The following table presents the volume of Dominion Energy’s derivative activity at September 30, 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 its long and short positions. Current Noncurrent Natural Gas (bcf): Fixed price 47 7 Basis (1) 159 439 Electricity (MWh in millions): Fixed price 16 31 FTRs 72 — Oil (Gal in millions) 6 — Interest rate (2) $ 358 $ 12,581 Foreign currency exchange rate (2) Danish Krone 468 kr. 4,167 kr. Euro €351 €2,651 (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 Dominion Energy’s Consolidated Balance Sheet at September 30, 2022: AOCI After-Tax Amounts Expected to be Reclassified to Earnings During the Next 12 Months After-Tax Maximum Term (millions) Interest rate $ (261 ) $ (33 ) 387 months Total $ (261 ) $ (33 ) 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 three and nine months ended September 30, 2022 and 2021. The following table presents the amounts recorded on the Consolidated Balance Sheet related to cumulative basis adjustments for fair value hedges, all of which related to discontinued hedging relationships at both September 30, 2022 and December 31, 2021: Carrying Amount of the Hedged Asset (Liability) Cumulative Amount of Fair Value Hedging Adjustments Included in the Carrying Amount of the Hedged Assets (Liabilities) September 30, 2022 December 31, 2021 September 30, 2022 December 31, 2021 (millions) Long-term debt $ — $ (352 ) $ — $ (2 ) Fair Value and Gains and Losses on Derivative Instruments The following table presents the fair values of Dominion Energy’s derivatives and where they are presented in its Consolidated Balance Sheets: Fair Value – Derivatives under Hedge Accounting Fair Value – Derivatives not under Hedge Accounting Total Fair Value (millions) September 30, 2022 ASSETS Current Assets Commodity $ — $ 610 $ 610 Interest rate — 54 54 Foreign currency exchange rate — 6 6 Total current derivative assets — 670 670 Noncurrent Assets Commodity — 260 260 Interest rate 596 943 1,539 Total noncurrent derivative assets 596 1,203 1,799 Total derivative assets $ 596 $ 1,873 $ 2,469 LIABILITIES Current Liabilities Commodity $ — $ 1,083 $ 1,083 Interest rate — 46 46 Foreign currency exchange rate — 50 50 Total current derivative liabilities — 1,179 1,179 Noncurrent Liabilities Commodity — 426 426 Interest rate 27 402 429 Foreign currency exchange rate — 337 337 Total noncurrent derivative liabilities 27 1,165 1,192 Total derivative liabilities $ 27 $ 2,344 $ 2,371 December 31, 2021 ASSETS Current Assets Commodity $ — $ 103 $ 103 Interest rate 1 17 18 Foreign currency exchange rate — 1 1 Total current derivative assets 1 121 122 Noncurrent Assets Commodity — 179 179 Interest rate 145 160 305 Foreign currency exchange rate — 7 7 Total noncurrent derivative assets 145 346 491 Total derivative assets $ 146 $ 467 $ 613 LIABILITIES Current Liabilities Commodity $ — $ 304 $ 304 Interest rate 42 13 55 Total current derivative liabilities 42 317 359 Noncurrent Liabilities Commodity — 165 165 Interest rate 295 49 344 Total noncurrent derivative liabilities 295 214 509 Total derivative liabilities $ 337 $ 531 $ 868 The following tables present the gains and losses on Dominion Energy’s derivatives, as well as where the associated activity is presented in its Consolidated Balance Sheets and Statements of Income. Derivatives in cash flow hedging relationships Amount of Gain (Loss) Recognized in AOCI on Derivatives (1) Amount of Gain (Loss) Reclassified From AOCI to Income Increase (Decrease) in Derivatives Subject to Regulatory Treatment (2) (millions) Three Months Ended September 30, 2022 Derivative type and location of gains (losses): Interest rate (3) $ 14 $ (16 ) $ 182 Total $ 14 $ (16 ) $ 182 Three Months Ended September 30, 2021 Derivative type and location of gains (losses): Interest rate (3) $ (2 ) $ (14 ) $ 9 Total $ (2 ) $ (14 ) $ 9 Nine Months Ended September 30, 2022 Derivative type and location of gains (losses): Interest rate (3) $ 86 $ (44 ) $ 815 Total $ 86 $ (44 ) $ 815 Nine Months Ended September 30, 2021 Derivative type and location of gains (losses): Interest rate (3) $ 29 $ (46 ) $ 198 Commodity (4) — (1 ) — Total $ 29 $ (47 ) $ 198 (1) Amounts deferred into AOCI have no associated effect in Dominion Energy’s 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 Dominion Energy’s Consolidated Statements of Income. (3) Amounts recorded in Dominion Energy’s Consolidated Statement of Income are classified in interest and related charges. (4) Amounts recorded in Dominion Energy’s Consolidated Statement of Income are classified in purchased gas. Derivatives not designated as hedging instruments Amount of Gain (Loss) Recognized in Income on Derivatives (1)(2) Three Months Ended Nine Months Ended September 30, September 30, 2022 2021 2022 2021 (millions) Derivative type and location of gains (losses): Commodity: Operating revenue $ (306 ) $ (334 ) $ (908 ) $ (521 ) Purchased gas 1 25 6 32 Electric fuel and other energy-related purchases 205 44 401 7 Interest rate: Interest and related charges 92 (20 ) 628 142 Total $ (8 ) $ (285 ) $ 127 $ (340 ) (1) Includes derivative activity amortized out of regulatory assets/liabilities. Amounts deferred into regulatory assets/liabilities have no associated effect in Dominion Energy’s 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. Virginia Power Balance Sheet Presentation The tables below present Virginia Power’s 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: September 30, 2022 December 31, 2021 Gross Amounts Not Offset in the Consolidated Balance Sheet Gross Amounts Not Offset in the Consolidated Balance Sheet Gross Assets Presented in the Consolidated Balance Sheet (1) Financial Instruments Cash Collateral Received Net Amounts Gross Assets Presented in the Consolidated Balance Sheet (1) Financial Instruments Cash Collateral Received Net Amounts (millions) Commodity contracts: Over-the-counter $ 297 $ 7 $ — $ 290 $ 110 $ 8 $ — $ 102 Exchange — — — — 7 7 — — Interest rate contracts: Over-the-counter 596 163 — 433 146 20 — 126 Foreign currency exchange rate contracts: Over-the-counter 6 6 — — 8 — — 8 Total derivatives, subject to a master netting or similar arrangement $ 899 $ 176 $ — $ 723 $ 271 $ 35 $ — $ 236 (1) Excludes $62 September 30, 2022 December 31, 2021 Gross Amounts Not Offset in the Consolidated Balance Sheet Gross Amounts Not Offset in the Consolidated Balance Sheet Gross Liabilities Presented in the Consolidated Balance Sheet (1) Financial Instruments Cash Collateral Paid Net Amounts Gross Liabilities Presented in the Consolidated Balance Sheet (1) Financial Instruments Cash Collateral Paid Net Amounts (millions) Commodity contracts: Over-the-counter $ 233 $ 13 $ 121 $ 99 $ 84 $ 8 $ 54 $ 22 Exchange 268 — 268 — 43 7 36 — Interest rate contracts: Over-the-counter 27 10 — 17 337 20 — 317 Foreign currency exchange rate contracts: Over-the-counter 387 153 — 234 — — — — Total derivatives, subject to a master netting or similar arrangement $ 915 $ 176 $ 389 $ 350 $ 464 $ 35 $ 90 $ 339 (1) Excludes $2 Volumes The following table presents the volume of Virginia Power’s derivative activity at September 30, 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 its long and short positions. Current Noncurrent Natural Gas (bcf): Fixed price 34 7 Basis (1) 145 428 Electricity (MWh in millions): Fixed price 8 5 FTRs 72 — Oil (Gal in millions) 6 — Interest rate (2) $ 250 $ 3,050 Foreign currency exchange rate (2) Danish Krone 468 kr. 4,167 kr. Euro €351 €2,651 (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 Virginia Power’s Consolidated Balance Sheet at September 30, 2022: AOCI After-Tax Amounts Expected to be Reclassified to Earnings During the Next 12 Months After-Tax Maximum Term (millions) Interest rate $ 13 $ (1 ) 387 months Total $ 13 $ (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 payments) in earnings, thereby achieving the realization of interest rates 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 and Gains and Losses on Derivative Instruments The following table presents the fair values of Virginia Power’s derivatives and where they are presented in its Consolidated Balance Sheets: Fair Value – Derivatives under Hedge Accounting Fair Value – Derivatives not under Hedge Accounting Total Fair Value (millions) September 30, 2022 ASSETS Current Assets Commodity $ — $ 357 $ 357 Foreign currency exchange rate — 6 6 Total current derivative assets — 363 363 Noncurrent Assets Commodity — 2 2 Interest rate 596 — 596 Total noncurrent derivative assets (1) 596 2 598 Total derivative assets $ 596 $ 365 $ 961 LIABILITIES Current Liabilities Commodity $ — $ 392 $ 392 Foreign currency exchange rate — 50 50 Total current derivative liabilities — 442 442 Noncurrent Liabilities Commodity — 111 111 Interest rate 27 — 27 Foreign currency exchange rate — 337 337 Total noncurrent derivative liabilities (2) 27 448 475 Total derivative liabilities $ 27 $ 890 $ 917 December 31, 2021 ASSETS Current Assets Commodity $ — $ 74 $ 74 Interest rate 1 — 1 Foreign currency exchange rate — 1 1 Total current derivative assets 1 75 76 Noncurrent Assets Commodity — 72 72 Interest rate 145 — 145 Foreign currency exchange rate — 7 7 Total noncurrent derivative assets (1) 145 79 224 Total derivative assets $ 146 $ 154 $ 300 LIABILITIES Current Liabilities Commodity $ — $ 92 $ 92 Interest rate 42 — 42 Total current derivative liabilities 42 92 134 Noncurrent Liabilities Commodity — 41 41 Interest rate 295 — 295 Total noncurrent derivative liabilities (2) 295 41 336 Total derivative liabilities $ 337 $ 133 $ 470 ( 1 ) Noncurrent derivative assets are presented in other deferred charges and other assets in Virginia Power’s Consolidated Balance Sheets. ( 2 ) Noncurrent derivative liabilities are presented in other deferred credits and other liabilities in Virginia Power’s Consolidated Balance Sheets. The following tables present the gains and losses on Virginia Power’s derivatives, as well as where the associated activity is presented in its Consolidated Balance Sheets and Statements of Income: Derivatives in cash flow hedging relationships Amount of Gain (Loss) Recognized in AOCI on Derivatives (1) Amount of Gain (Loss) Reclassified From AOCI to Income Increase (Decrease) in Derivatives Subject to Regulatory Treatment (2) (millions) Three Months Ended September 30, 2022 Derivative type and location of gains (losses): Interest rate (3) $ 18 $ (1 ) $ 182 Total $ 18 $ (1 ) $ 182 Three Months Ended September 30, 2021 Derivative type and location of gains (losses): Interest rate (3) $ (2 ) $ (1 ) $ 8 Total $ (2 ) $ (1 ) $ 8 Nine Months Ended September 30, 2022 Derivative type and location of gains (losses): Interest rate (3) $ 77 $ (2 ) $ 814 Total $ 77 $ (2 ) $ 814 Nine Months Ended September 30, 2021 Derivative type and location of gains (losses): Interest rate (3) $ 24 $ (2 ) $ 194 Total $ 24 $ (2 ) $ 194 (1) Amounts deferred into AOCI have no associated effect in Virginia Power’s 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 Virginia Power’s Consolidated Statements of Income. (3) Derivatives not designated as hedging instruments Amount of Gain (Loss) Recognized in Income on Derivatives (1)(2) Three Months Ended Nine Months Ended September 30, September 30, 2022 2021 2022 2021 (millions) Derivative type and location of gains (losses): Commodity: Operating Revenue $ (108 ) $ (19 ) $ (237 ) $ (25 ) Electric fuel and other energy-related purchases 166 42 348 5 Total $ 58 $ 23 $ 111 $ (20 ) (1) Includes derivative activity amortized out of regulatory assets/liabilities. Amounts deferred into regulatory assets/liabilities have no associated effect in Virginia Power’s Consolidated Statements of Income. (2)

Investments

Investments	9 Months Ended
	Sep. 30, 2022
Investments Debt And Equity Securities [Abstract]
Investments	Note 10. 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 16. 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 $109 million and $122 million at September 30, 2022 and December 31, 2021, respectively. Decommissioning Trust Securities Dominion Energy holds equity and fixed income securities, insurance contracts and cash equivalents in nuclear decommissioning trust funds to fund future decommissioning costs for its nuclear plants. Dominion Energy’s decommissioning trust funds are summarized below: Amortized Cost Total Unrealized Gains Total Unrealized Losses Allowance for Credit Losses Fair Value (millions) September 30, 2022 Equity securities: (1) U.S. $ 1,375 $ 2,209 $ (37 ) $ 3,547 Fixed income securities: (2) Corporate debt instruments 649 — (86 ) $ — 563 Government securities 1,291 1 (101 ) — 1,191 Common/collective trust funds 62 — — — 62 Insurance contracts 214 — — 214 Cash equivalents and other (3) 13 — — — 13 Total $ 3,604 $ 2,210 $ (224 ) (4) $ — $ 5,590 December 31, 2021 Equity securities: (1) U.S. $ 1,567 $ 3,734 $ (13 ) $ 5,288 Fixed income securities: (2) Corporate debt instruments 854 32 (5 ) $ — 881 Government securities 1,382 43 (7 ) — 1,418 Common/collective trust funds 168 4 — — 172 Insurance contracts 255 — — 255 Cash equivalents and other (3) 9 2 (75 ) — (64 ) Total $ 4,235 $ 3,815 $ (100 ) (4) $ — $ 7,950 (1) Unrealized gains and losses on equity securities are included in other income and the nuclear decommissioning trust regulatory liability. (2) Unrealized gains and losses on fixed income securities are included in AOCI and the nuclear decommissioning trust regulatory liability. Changes in allowance for credit losses are included in other income. (3) Includes pending sales of securities of $13 million at September 30, 2022, and pending purchases of securities of $35 million at December 31, 2021. (4) The fair value of securities in an unrealized loss position was $1.9 billion and $883 million at September 30, 2022 and December 31, 2021, respectively. The portion of unrealized gains and losses that relates to equity securities held within Dominion Energy’s nuclear decommissioning trusts is summarized below: Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 (millions) Net gains (losses) recognized during the period $ (205 ) $ (15 ) $ (1,123 ) $ 616 Less: Net (gains) losses recognized during the period on securities sold during the period (2 ) (11 ) 3 (323 ) Unrealized gains (losses) recognized during the period on securities still held at period end (1) $ (207 ) $ (26 ) $ (1,120 ) $ 293 (1) Included in other income and the nuclear decommissioning trust regulatory liability. The fair value of Dominion Energy’s fixed income securities with readily determinable fair values held in nuclear decommissioning trust funds at September 30, 2022 by contractual maturity is as follows: Amount (millions) Due in one year or less $ 122 Due after one year through five years 512 Due after five years through ten years 453 Due after ten years 729 Total $ 1,816 Presented below is selected information regarding Dominion Energy’s equity and fixed income securities with readily determinable fair values held in nuclear decommissioning trust funds. Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 (millions) Proceeds from sales $ 605 $ 614 $ 2,686 $ 3,324 Realized gains (1) 17 25 132 405 Realized losses (1) 50 7 247 81 (1) Includes realized gains and losses recorded to the nuclear decommissioning trust regulatory liability. Virginia Power Virginia Power holds equity and fixed income securities and cash equivalents in nuclear decommissioning trust funds to fund future decommissioning costs for its nuclear plants. Virginia Power’s decommissioning trust funds are summarized below: Amortized Cost Total Unrealized Gains Total Unrealized Losses Allowance for Credit Losses Fair Value (millions) September 30, 2022 Equity securities: (1) U.S. $ 856 $ 1,151 $ (32 ) $ 1,975 Fixed income securities: (2) Corporate debt instruments 434 — (62 ) $ — 372 Government securities 654 — (48 ) — 606 Common/collective trust funds 45 — — — 45 Cash equivalents and other (3) 6 — — — 6 Total $ 1,995 $ 1,151 $ (142 ) (4) $ — $ 3,004 December 31, 2021 Equity securities: (1) U.S. $ 841 $ 1,720 $ (11 ) $ 2,550 Fixed income securities: (2) Corporate debt instruments 517 17 (3 ) $ — 531 Government securities 584 16 (2 ) — 598 Common/collective trust funds 53 — — — 53 Cash equivalents and other (3) 2 — — — 2 Total $ 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. (2) Unrealized gains and losses on fixed income securities are included in AOCI and the nuclear decommissioning trust regulatory liability . (3) Includes pending sales of securities of $6 million and $5 million at September 30, 2022 and December 31, 2021, respectively. (4) The fair value of securities in an unrealized loss position was $1.1 billion and $425 million The portion of unrealized gains and losses that relates to equity securities held within Virginia Power’s nuclear decommissioning trusts is summarized below: Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 (millions) Net gains (losses) recognized during the period $ (118 ) $ 6 $ (581 ) $ 319 Less: Net (gains) losses recognized during the period on securities sold during the period (4 ) (9 ) (8 ) (182 ) Unrealized gains (losses) recognized during the period on securities still held at period end (1) $ (122 ) $ (3 ) $ (589 ) $ 137 (1) Included in other income and the nuclear decommissioning trust regulatory liability. The fair value of Virginia Power’s fixed income securities with readily determinable fair values held in nuclear decommissioning trust funds at September 30, 2022 by contractual maturity is as follows: Amount (millions) Due in one year or less $ 64 Due after one year through five years 277 Due after five years through ten years 301 Due after ten years 381 Total $ 1,023 Presented below is selected information regarding Virginia Power’s equity and fixed income securities with readily determinable fair values held in nuclear decommissioning trust funds. Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 (millions) Proceeds from sales $ 425 $ 216 $ 1,289 $ 1,465 Realized gains (1) 14 17 40 213 Realized losses (1) 33 2 85 28 (1) Includes realized gains and losses recorded to the nuclear decommissioning trust regulatory liability. Equity Method Investments Dominion Energy recorded equity earnings on its investments of $255 million and $214 million for the nine months ended September 30, 2022 and 2021, respectively, in earnings from equity method investees in its Consolidated Statements of Income. In addition, Dominion Energy recorded equity losses of $6 and $19 million for the nine months ended September 30, 2022 and 2021, respectively, in discontinued operations related to its investment in Atlantic Coast Pipeline. Dominion Energy received distributions of $268 million and $263 million for the nine months ended September 30, 2022 and 2021, respectively. At September 30, 2022 and December 31, 2021, the net difference between the carrying amount of Dominion Energy’s investments and its share of underlying equity in net assets was $227 million and $244 million, respectively. At September 30, 2022, these differences are primarily comprised of $ million of equity method goodwill that is not being amortized and a $ million basis difference from Dominion Energy’s investment in Cove Point, which is being amortized over the useful lives of the underlying assets. At December 31, 2021, these differences are comprised of $27 million of equity method goodwill that is not being amortized, a $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 Dominion Energy holds a 50% noncontrolling limited partnership interest in Cove Point which is accounted for as an equity method investment, as discussed in Note 9 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021. Income before income taxes recorded for 100% of Cove Point was $197 million and $136 million for the three months ended September 30, 2022 and 2021, respectively, and $506 million and $410 million for the nine months ended September 30, 2022 and 2021, respectively. Earnings attributable to Dominion Energy are presented within earnings from equity method investees Dominion Energy recorded distributions from Cove Point of $98 million and $85 million for the three months ended September 30, 2022 and 2021, respectively, and $259 million and $235 million for the nine months ended September 30, 2022 and 2021, respectively. Atlantic Coast Pipeline A description of Dominion Energy’s investment in Atlantic Coast Pipeline, including events that led to the cancellation of the Atlantic Coast Pipeline Project in July 2020, is included in Note 9 to the Consolidated Financial Statements in the Company’s Annual Report on Form 10-K for the year ended December 31, 2021. At September 30, 2022 and December 31, 2021, Dominion Energy has recorded a liability of $119 million and $113 million, respectively, in other current liabilities in its Consolidated Balance Sheets as a result of its share of equity losses exceeding its investment which reflects Dominion Energy’s obligations on behalf of Atlantic Coast Pipeline related to its AROs. Dominion Energy recorded contributions of $965 million during the nine months ended September 30, 2021 to Atlantic Coast Pipeline. Dominion Energy recorded no contributions during the nine months ended September 30, 2022 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. Wrangler 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 (expense), in its Consolidated Statements of Income for the nine months ended September 30, 2022. All activity related 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 will contribute its existing privatization operations, excluding contracts held by DESC, and Patriot will 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. Dominion Energy expects to contribute its existing privatization operations in Virginia to Dominion Privatization by the end of 2022, contingent on clearance or approval under the Hart-Scott-Rodino Act and other customary closing and regulatory conditions. In April 2022, Dominion Energy filed with the Federal Trade Commission for approval under the Hart-Scott-Rodino Act. In May 2022, the waiting period under the Hart-Scott-Rodino Act expired. The contribution of the service concession arrangements currently held by Virginia Power also requires approval from the Virginia and North Carolina Commissions. In May 2022, Virginia Power filed for such approval with the Virginia and North Carolina Commissions. In July and September 2022, the Virginia Commission and North Carolina Commission, respectively, approved the request to transfer at net book value. Upon closing of the second contribution, Dominion Energy expects to receive cash proceeds totaling $108 million, subject to customary closing adjustments, and to recognize a gain of approximately $130 million ($100 million after-tax). When this future contribution occurs, Dominion Energy expects to maintain a 50% noncontrolling ownership interest in Dominion Privatization. At September 30, 2022, $83 million of contracts and related assets and $4 million of liabilities associated with existing privatization operations in Virginia are classified as held for sale and reflected in current assets held for sale and other current liabilities, respectively, in Dominion Energy’s Consolidated Balance Sheets and in other current assets and other current liabilities, respectively, in Virginia Power’s Consolidated Balance Sheets. All activity related to Dominion Privatization is reflected within the Corporate and Other segment.

Property, Plant and Equipment

Property, Plant and Equipment	9 Months Ended
	Sep. 30, 2022
Property Plant And Equipment [Abstract]
Property, Plant and Equipment	Note 11. Property, Plant and Equipment Acquisitions of Nonregulated Solar Projects Other than the items discussed below, there have been no significant updates to acquisitions of solar projects by the Companies from those discussed in Note 10 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021. The following table presents acquisitions by Virginia Power of non-jurisdictional solar projects. Virginia Power has claimed or expects to claim federal investment tax credits on the projects. Project Name Date Agreement Entered Date Agreement Closed Project Location Project Cost (millions) (1) Date of Commercial Operations MW Capacity Pumpkinseed May 2020 May 2020 Virginia $ 138 September 2022 60 Bookers Mill February 2021 June 2021 Virginia 225 Expected 2023 127 (1) Includes acquisition cost The following table presents acquisitions by Dominion Energy of solar projects in addition to the Virginia Power projects presented above. Dominion Energy expects to claim federal investment tax credits on the projects. Project Name Date Agreement Entered Date Agreement Closed Project Location Project Cost (millions) (1) Date of Commercial Operations MW Capacity Madison July 2020 July 2020 Virginia $ 130 Expected 2023 62 Atlanta Farms March 2022 May 2022 Ohio 390 Expected split (2) 200 Hardin II August 2020 Expected 2022 Ohio 290 Expected 2023 150 (1) Includes acquisition cost. (2) Expected to be split between 2023 and 2024 Sale of Utility Property In June 2022, Dominion Energy completed the sale of certain utility property in South Carolina, as approved by the South Carolina Commission in May 2022, for total cash consideration of $16 million. In connection with the sale, Dominion Energy recognized a gain of $16 million ($12 million after-tax), recorded in losses (gains) on sales of assets, in its Consolidated Statements of Income for the nine months ended September 30, 2022.

Regulatory Assets and Liabiliti

Regulatory Assets and Liabilities	9 Months Ended
	Sep. 30, 2022
Regulated Operations [Abstract]
Regulatory Assets and Liabilities	Note 12. Regulatory Assets and Liabilities Regulatory assets and liabilities include the following: September 30, 2022 December 31, 2021 (millions) Dominion Energy Regulatory assets: Deferred cost of fuel used in electric generation (1) $ 571 $ 251 Deferred project costs and DSM programs for gas utilities (2) 68 53 Unrecovered gas costs (3) 184 191 Deferred rider costs for Virginia electric utility (4) 149 72 Ash pond and landfill closure costs (5) 62 193 Deferred nuclear refueling outage costs (6) 55 79 NND Project costs (7) 138 138 Deferred early plant retirement charges (8) 226 226 Derivatives (9) 375 112 Other 236 177 Regulatory assets-current 2,064 1,492 Unrecognized pension and other postretirement benefit costs (10) 549 548 Deferred rider costs for Virginia electric utility (4) 312 489 Deferred project costs for gas utilities (2) 693 675 Interest rate hedges (11) 170 899 AROs and related funding (12) 409 329 NND Project costs (7) 2,122 2,226 Ash pond and landfill closure costs (5) 2,245 2,223 Deferred cost of fuel used in electric generation (1) 1,318 409 Deferred early plant retirement charges (8) 56 226 Derivatives (9) 562 35 Other 525 584 Regulatory assets-noncurrent 8,961 8,643 Total regulatory assets $ 11,025 $ 10,135 Regulatory liabilities: Provision for future cost of removal and AROs (13) 181 181 Reserve for refunds and rate credits to electric utility customers (14) 129 420 Income taxes refundable through future rates (15) 147 153 Monetization of guarantee settlement (16) 67 67 Derivatives (9) 325 69 Other 170 96 Regulatory liabilities-current 1,019 986 Income taxes refundable through future rates (15) 4,096 4,260 Provision for future cost of removal and AROs (13) 2,409 2,331 Nuclear decommissioning trust (17) 1,532 2,158 Monetization of guarantee settlement (16) 719 831 Interest rate hedges (11) 202 67 Reserve for refunds and rate credits to electric utility customers (14) 358 448 Unrecognized pension and other postretirement benefit costs (10) 177 200 Overrecovered other postretirement benefit costs (18) 131 105 Derivatives (9) 227 169 Other 191 144 Regulatory liabilities-noncurrent 10,042 10,713 Total regulatory liabilities $ 11,061 $ 11,699 (1) Reflects deferred fuel expenses for the Virginia, North Carolina and South Carolina jurisdictions of Dominion Energy’s electric generation operations. Reflects a $66 million reduction recorded in the first quarter of 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 ) Primarily ( 3 ) Reflects unrecovered gas costs at regulated gas operations, which are recovered through filings with the applicable regulatory authority. ( 4 ) 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. ( 5 ) Primarily reflects legislation enacted in Virginia in 2019, 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. See Note 13 for additional information. (6) Legislation enacted in Virginia in April 2014 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. ( 7 ) 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. See Note 3 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021 for additional information. ( 8 ) 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 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021 for additional information. ( 9 ) 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. ( 1 0 ) 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. ( 1 1 ) 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 as of September 30, 2022. ( 1 2 ) 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 . (1 3 ) Rates charged to customers by Dominion Energy’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. (1 4 ) 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. See Notes 3 and 13 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021 for additional information. 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 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021 for additional information. ( 1 5 ) 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. ( 1 6 ) Reflects 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. See Note 3 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021 for additional information. ( 17 ) 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 Dominion Energy’s utility nuclear generation stations, in excess of the related AROs. ( 18 ) Reflects a regulatory liability for the collection of postretirement benefit costs allowed in rates in excess of expense incurred. September 30, 2022 December 31, 2021 (millions) Virginia Power Regulatory assets: Deferred cost of fuel used in electric generation (1) $ 205 $ 131 Deferred rider costs (2) 149 72 Ash pond and landfill closure costs (3) 62 193 Deferred nuclear refueling outage costs (4) 55 79 Deferred early plant retirement charges (5) 226 226 Derivatives (6) 369 105 Other 70 44 Regulatory assets-current 1,136 850 Deferred rider costs (2) 312 489 Interest rate hedges (7) — 604 Ash pond and landfill closure costs (3) 2,242 2,223 Deferred cost of fuel used in electric generation (1) 1,318 409 Deferred early plant retirement charges (5) 56 226 Derivatives (6) 453 34 Other 137 145 Regulatory assets-noncurrent 4,518 4,130 Total regulatory assets $ 5,654 $ 4,980 Regulatory liabilities: Provision for future cost of removal (8) 154 154 Reserve for refunds to Virginia electric customers (9) 27 306 Income taxes refundable through future rates (10) 63 63 Derivatives (6) 265 51 Other 139 73 Regulatory liabilities-current 648 647 Income taxes refundable through future rates (10) 2,280 2,335 Nuclear decommissioning trust (11) 1,532 2,158 Provision for future cost of removal (8) 1,082 1,043 Interest rate hedges (7) 202 — Reserve for refunds to Virginia electric customers (9) 6 25 Other 167 179 Regulatory liabilities-noncurrent 5,269 5,740 Total regulatory liabilities $ 5,917 $ 6,387 (1) Reflects deferred fuel expenses for the Virginia and North Carolina jurisdictions of Virginia Power’s generation operations. 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 enacted in Virginia in 2019, 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. See Note 13 for additional information. (4) ( 5 ) 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 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021 for additional information. ( 6 ) 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. ( 7 ) 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 24 years as of September 30, 2022. ( 8 ) Rates charged to customers by 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. ( 9 ) Reflects amounts to be refunded to jurisdictional retail electric customers in Virginia associated with the settlement of the 2021 Triennial Review. See Note 13 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021 for additional information. ( 1 0 ) Amounts recorded to pass the effect of reduced income taxes from the 2017 Tax Reform Act to customers in future periods, which will 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. (1 1 ) 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) for the future decommissioning of Virginia Power’s utility nuclear generation stations, in excess of the related AROs. At September 30, 2022, Dominion Energy and Virginia Power regulatory assets include $4.8 billion and $3.3 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	9 Months Ended
	Sep. 30, 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 Other than the following matters, there have been no significant developments regarding the pending regulatory matters disclosed in Note 13 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021. Virginia Regulation 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 three-year In September 2022, the Virginia Commission approved the comprehensive settlement agreement Renewable Generation Projects 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, as of September 2021, 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 October 2022, Virginia Power filed a petition with the Virginia Commission for CPCNs to construct and operate eight utility-scale projects totaling approximately 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. 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. This matter is pending. Nuclear Life Extension 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 Developments for significant riders associated with various Virginia Power projects are as follows: Rider Name Application Date Approval Date Rate Year Beginning Total Revenue Requirement (millions) Increase (Decrease) Over Previous Year (millions) Rider B June 2022 Pending April 2023 $ 34 $ 18 Rider B June 2022 Pending 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 GT August 2021 May 2022 June 2022 56 N/A Rider GT August 2022 Pending June 2023 16 (40 ) Rider OSW November 2021 August 2022 (3) September 2022 79 N/A Rider OSW November 2022 Pending September 2023 271 192 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 RPS December 2021 June 2022 September 2022 140 127 Rider SNA ( 5) October 2021 July 2022 September 2022 107 N/A Rider SNA ( 5) October 2022 Pending September 2023 50 (57 ) Rider T1 (6) May 2022 July 2022 September 2022 706 (168 ) Rider U ( 7) June 2021 March 2022 April 2022 95 15 Rider U ( 8) 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 ( 9) December 2021 August 2022 September 2022 91 17 (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. (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. See additional discussion below. (5) 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. (6) Consists of $482 million for the transmission component of Virginia Power’s base rates and $224 million for Rider T1. (7) Consists of $ 60 35 (8) As amended in June 2022, application consists of $74 million for previously approved phases of Rider U. (9) 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%. 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 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. Electric Transmission Projects Description and Location of Project Application Date Approval Date Type of Line Miles of Lines Cost Estimate (millions) Elmont-Ladysmith rebuild and related projects in the Counties of Hanover and Caroline, Virginia April 2021 April 2022 500 kV 26 $ 95 Rebuild transmission lines and related projects in the City of Staunton and County of Augusta, Virginia November 2021 August 2022 230 kV 21 45 Build new Dulles Towne Center substation and line loop in the County of Loudoun, Virginia December 2021 July 2022 230 kV 1 105 Nimbus line loop and substation and new 230 kV line in the County of Loudon, Virginia February 2022 October 2022 230 kV 1 40 Partial rebuild of Bristers-Ox 115 kV line in Fauquier and Prince William Counties, Virginia August 2022 Pending 115 kV 15 40 Construct new switching station, substations, transmission lines and related projects in Lunenberg and Mecklenburg Counties, Virginia October 2022 Pending 230 kV 18 230 Construct new switching station, substation, transmission lines and related projects in Charlotte, Halifax and Mecklenburg Counties, Virginia October 2022 Pending 230 kV 26 215 Construct new switching stations, substation, transmission lines and related projects in Loudoun County, Virginia October 2022 Pending 500/230 kV 4 720 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 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 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 the North Carolina Commission for a $56 million gas cost increase. The North Carolina Commission approved the filing in May 2022 with rates effective June 2022. In September 2022, PSNC submitted a filing with the North Carolina Commission for a $126 million gas cost increase. The North Carolina Commission approved the filing in September 2022 with rates effective October 2022. 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 DSM Programs DESC has approval for a DSM rider through which it recovers expenditures related to its DSM programs. In January 2022, DESC filed an application with the South Carolina Commission seeking approval to recover $60 million of costs and net lost revenues associated with these programs, along with an incentive to invest in such programs. In April 2022 , the South Carolina Commission approved the request, effective with the first billing cycle of May 2022. Cost of Fuel DESC’s retail electric rates include a cost of fuel component approved by the South Carolina Commission which may be adjusted periodically to reflect changes in the price of fuel purchased by DESC. In August 2022, DESC filed an application with the South Carolina Commission seeking a mid-period adjustment to increase the base fuel component of retail electric rates for the recovery of electric fuel costs. If approved, the increase of the base fuel cost component is expected to be effective with the first billing cycle of January 2023. The estimated annual increase is $399 million. This matter is pending. Natural Gas Rates In June 2022, DESC filed with the South Carolina Commission its monitoring report for the 12-month period ended March 31, 2022 with a total revenue requirement of $553 million. This represents a $129 million overall annual increase to its natural gas rates including a $16 million base rate increase under the terms of the Natural Gas Rate Stabilization Act effective with the first billing cycle of November 2022. In October 2022, the South Carolina Commission issued an order approving a total revenue requirement of $549 million effective with the first billing cycle of November 2022. This represents a $125 million overall annual increase to DESC’s natural gas rates including a $12 million base rate increase under the terms of the Natural Gas Rate Stabilization Act. Ohio Regulation PIR Program In 2008, East Ohio began PIR, aimed at replacing approximately 25% of its pipeline system. In April 2022, the Ohio Commission approved an extension of East Ohio’s PIR program for capital investments through 2026 with continuation of 3% increases of annual capital expenditures per year. In June 2022, the Ohio Commission approved East Ohio’s application to adjust the PIR cost recovery rates for 2021 costs. The filing reflects gross plant investment for 2021 of $225 million, cumulative gross plant investment of $2.2 billion and a revenue requirement of $273 million. CEP Program In 2011, East Ohio began CEP which enables East Ohio to defer depreciation expense, property tax expense and carrying costs associated with CEP investments. In April 2022, certain parties filed an appeal with the Supreme Court of Ohio appealing the Ohio Commission’s December 2020 order establishing the CEP rider, including the rate of return utilized in determining the revenue requirement. This matter is pending. In February 2022, the Ohio Commission approved adjustments to CEP cost recovery rates for 2019 and 2020 costs. The approved rates reflect gross plant investment for 2019 and 2020 of $231 million, cumulative gross plant investment of $952 million and a revenue requirement of $118 million. The Ohio Commission also ordered that East Ohio should file its next base rate case by October 2023. In November 2022, the Ohio Commission approved adjustments to CEP cost recovery rates for 2021 costs. The approved rates reflect gross plant investment for 2021 of $146 million, cumulative gross plant investment of $1.1 billion and a revenue requirement of $131 million. PIPP Plus Program Under the Ohio PIPP Plus Program, eligible customers can make reduced payments based on their ability to pay their bill. The difference between the customer’s total bill and the PIPP amount is deferred and collected under the PIPP rider in accordance with the rules of the Ohio Commission. In July 2022, East Ohio’s annual update of the PIPP rider filed in May 2022 with the Ohio Commission was approved. The revised rider rate reflects recovery over the twelve-month period from July 2022 through June 2023 of projected deferred program costs of approximately $22 million from April 2022 through June 2023, net of over-recovery of accumulated arrearages of approximately $4 million as of March 31, 2022. UEX Rider East Ohio has approval for a UEX rider through which it recovers the bad debt expense of most customers not participating in the PIPP Plus Program. The UEX rider is adjusted annually to achieve dollar for dollar recovery of East Ohio’s actual writeoffs of uncollectible amounts. In July 2022, the Ohio Commission approved East Ohio’s application to adjust its UEX rider to reflect an annual revenue requirement of $20 million to provide for recovery of an under-recovered accumulated bad debt expense of $7 million as of March 31, 2022, and recovery of net bad debt expense projected to total $13 million for the twelve-month period ending March 2023. West Virginia Regulation West Virginia Base Rate Case In September 2020, Hope filed its base rate case and schedules with the West Virginia Commission. Hope proposed a non-fuel, base rate increase of $28 million. The base rate increase was proposed to recover the significant investment in distribution infrastructure and costs associated with the acquisition of over 2,000 miles of gathering assets, both for the benefit of West Virginia customers. The proposed rates would provide for an ROE of 10.25% compared to the authorized ROE of 9.45%. In July 2021, the West Virginia Commission approved a non-fuel, base rate increase of $13 million for rates effective July 2021 with an ROE of 9.54%. In August 2021, Hope filed a petition for reconsideration with the West Virginia Commission regarding certain return calculations included in the July 2021 approval order. In June 2022, the West Virginia Commission issued an order resolving this petition without material modification to Hope’s base rates. Utah Regulation Utah Base Rate Case In May 2022, Questar Gas filed its base rate case and schedules with the Utah Commission. Questar Gas proposed a non-fuel, base rate increase of $71 million effective January 2023. The base rate increase was proposed to recover the significant investment in distribution infrastructure for the benefit of Utah customers. The proposed rates would provide for an ROE of 10.3% compared to the currently authorized ROE of 9.5%. This matter is pending. Purchased Gas In July 2022, the Utah Commission approved Questar Gas’ request for a $94 million gas cost increase with rates effective August 2022. In October 2022, the Utah Commission approved Questar Gas’ request for a $128 million gas cost increase with rates effective November 2022.

Leases

Leases	9 Months Ended
	Sep. 30, 2022
Leases [Abstract]
Leases	Note 14. Leases Other than the items discussed below, there have been no significant changes regarding the Companies’ leases as described in Note 15 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021. Dominion Energy’s Consolidated Statements of Income include $6 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 $71 million ($53 million after-tax) in the first quarter of 2021, included in impairments of assets and other charges in its Consolidated Statements of Income, primarily for amounts required to be repaid to the lessor.

Variable Interest Entities

Variable Interest Entities	9 Months Ended
	Sep. 30, 2022
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Variable Interest Entities	Note 15. Variable Interest Entities There have been no significant changes regarding the entities the Companies consider VIEs as described in Note 16 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021. Virginia Power Virginia Power purchased shared services from DES, an affiliated VIE, of $96 million and $89 million for the three months ended September 30, 2022 and 2021, respectively, and $290 million and $278 million for the nine months ended September 30, 2022 and 2021, respectively. Virginia Power’s Consolidated Balance Sheets include amounts due to DES of $27 million and $20 million at September 30, 2022 and December 31, 2021, respectively, recorded in payables to affiliates.

Significant Financing Transacti

Significant Financing Transactions	9 Months Ended
	Sep. 30, 2022
Debt Disclosure [Abstract]
Significant Financing Transactions	Note 16. Significant Financing Transactions Credit Facilities and Short-term Debt 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. Other than the items discussed below, there have been no significant changes regarding the Companies’ credit facilities and short-term debt as described in Note 17 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021. 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. At September 30, 2022, Dominion Energy’s commercial paper and letters of credit outstanding, as well as its capacity available under the credit facility, were as follows: Facility Limit Outstanding Commercial Paper Outstanding Letters of Credit Facility Capacity Available (millions) Joint revolving credit facility ( 1) $ 6,000 $ 2,600 $ 251 $ 3,149 (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. 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 September 30, 2022, the sub-limits for DESC and Questar Gas were $500 million and $250 million, respectively. In addition to the 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 June 2025 June 2024 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 SM At September 30, 2022 and December 31, 2021, Dominion Energy’s Consolidated Balance Sheets include $343 million and $431 million, respectively, with respect to such notes presented within short-term debt. The proceeds are used for general corporate purposes and to repay debt. 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. At September 30, 2022, 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 was as follows: Facility Limit ( 1) Outstanding Commercial Paper Outstanding Letters of Credit (millions) Joint revolving credit facility ( 1) $ 6,000 $ 1,009 $ 180 (1) 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 September 30, 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 Unless otherwise noted, the proceeds of long-term debt issuances were used for general corporate purposes and/or to repay short-term debt. In January 2022, Virginia Power issued $600 million of 2.40% senior notes and $400 million of 2.95% senior notes that mature in 2032 and 2051, respectively. In April 2022, Virginia Power remarketed two series of tax-exempt bonds, with an aggregate outstanding principal of approximately $138 million to new investors. Both bonds will bear interest at a coupon of 1.65% until May 2024, after which they will bear interest at a market rate to be determined at that time. In May 2022, Dominion Energy borrowed $900 million under its Sustainability Revolving Credit Facility which matures in 2024 and bears interest at a variable rate. 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. In May 2022, Virginia Power issued $600 million of 3.75% senior notes and $600 million of 4.625% senior notes that mature in 2027 and 2052, respectively. In August 2022, Dominion Energy issued $400 million of 4.35% senior notes and $600 million of 4.85% senior notes that mature in 2032 and 2052, respectively. In August 2022, Questar Gas issued through private placement $125 million of 4.39% senior notes and $125 million of 4.70% senior notes that will mature in 2032 and 2052, respectively. In the third quarter of 2022, Dominion Energy repurchased $149 million of senior notes with various interest rates and maturity dates. Gains related to the early redemption of the senior notes were $17 million ($13 million after-tax) reflected within interest and related charges in Dominion Energy’s Consolidated Statements of Income for the three and nine months ended September 30, 2022. In October 2022, Dominion Energy repurchased $61 million of senior notes with various interest rates and maturity dates. In October 2022, Dominion Energy remarketed its $27 million Peninsula Ports Authority of Virginia Coal Terminal Revenue Refunding Bonds, Series 2003 due in 2033 to new investors. The bonds will bear interest at a coupon rate of 3.80% until October 2024 In October 2022, East Ohio completed pricing and expects to issue through private placement by December 2022 $250 million of 6.19% and $250 million of 6.38% senior notes that will mature in 2032 and 2052, respectively. 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, as discussed in Note 18 to the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021. 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. Preferred Stock Dominion Energy is authorized to issue up to 20 million shares of preferred stock, which may be designated into separate classes. At September 30, 2022, Dominion Energy had issued and outstanding 1.8 million shares of 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. Dominion Energy recorded dividends of $7 million ($4.375 per share) for the three months ended September 30, 2021, and $12 million ($7.292 per share) and $21 million ($13.125 per share) for the nine months ended September 30, 2022 and 2021, respectively, on the Series A Preferred Stock. In addition, Dominion Energy recorded interest expense of $5 million and $7 million on the Series A Preferred Stock for the three and nine months ended September 30, 2022, respectively, following the reclassification of these shares to a mandatorily redeemable liability effective June 2022 as discussed below. Dominion Energy recorded dividends of $9 million ($11.625 per share) for both the three months ended September 30, 2022 and 2021, and $27 million ($34.875 per share) for both the nine months ended September 30, 2022 and 2021, on the Series B Preferred Stock. Dominion Energy recorded dividends of $11 million ($10.875 per share) for the three months ended September 30, 2022, and $33 million ($32.625 per share) for the nine months ended September 30, 2022, on the Series C Preferred Stock. Other than as discussed below, there have been no significant changes to Dominion Energy’s Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock as described in Note 19 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021. 2019 Corporate Units The 2019 Equity Units, initially issued in the form of 2019 Series A Corporate Units, are described in Note 19 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021. 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 10. 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. The stock purchase contract liability associated with Dominion Energy’s 2019 Equity Units was $44 million at December 31, 2021. Stock purchase contract payments of $44 million and $64 million were made during the nine months ended September 30, 2022 and 2021, respectively. Issuance of Common Stock Dominion Energy recorded, net of fees and commissions, $134 million from the issuance of 2 million shares of common stock for the nine months ended September 30, 2022 and $292 million from the issuance of 4 million shares of common stock for the nine months ended September 30, 2021, through various programs including Dominion Energy Direct® and employee savings plans as described in Note 20 to the Consolidated Financial Statements to the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021. 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 17. In May 2022, Dominion Energy issued million shares of its common stock, valued at $ 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 17. In June 2022, Dominion Energy issued 19.4 million shares to settle the stock purchase contract component of the 2019 Equity Units 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 17. At-the-Market Program In August 2020, Dominion Energy entered into sales agency agreements to effect sales under an at-the-market program as discussed in Note 20 to the Consolidated Financial Statements in the Companies’ Annual Report Form 10-K for the year ended December 31, 2021. Dominion Energy did not issue any shares or enter into any forward sale agreements under this program during the nine months ended September 30, 2022. Repurchase of Common Stock 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 $3.0 billion repurchase program authorized in July 2020 and completed in December 2020 as discussed in Note 20 to the Consolidated Financial Statements in the Companies’ Annual Report Form 10-K for the year ended December 31, 2021 . Dominion Energy did not repurchase any shares of common stock during the nine months ended September 30, 2022

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2022
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 17. 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 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 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 . . 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 with one site at Virginia Power and expects to commence remediation activities in 2023 depending on receipt of final permits and approvals. At September 30, 2022 and December 31, 2021, Dominion Energy had $47 million and $45 million, respectively, and Virginia Power had $25 million at both periods, of reserves recorded. 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. In addition, certain legal matters which have been resolved are discussed in Note 23 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021. 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 September 3 0 , 202 2 and December 31, 202 1 include reserves of $ 96 million and $ million, respectively, included in other current liabilities, and insurance receivables of $ 68 million and $ million , respectively , included within other receivables. These balances at September 3 0 , 2022 and December 31, 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 both the three and nine months ended September 30, 2022, charges included in Dominion Energy’s Consolidated Statements of Income were inconsequential . During the nine months ended September 3 0 , 202 1 , Dominion Energy’s Consolidated Statements of Income include charges of $ million ($ million after-tax) , included within impairment of assets and other charges. 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 paid $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. Nuclear Operations Nuclear Insurance Other than the items discussed below, there have been no significant changes regarding the Companies’ nuclear insurance as described in Note 23 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021. During the second quarter of 2022, Dominion Energy reduced the levels of nuclear property insurance coverage for the reactor site at Summer from $2.75 billion to the NRC minimum requirement of $1.06 billion. As a result of this reduction in nuclear property insurance coverage, Dominion Energy’s maximum retrospective premium assessment for the current annual policy period was reduced to $65 million. Additionally, DESC maintains an excess property insurance policy with the European Mutual Association for Nuclear Insurance which provides coverage to Summer for property damage and outage costs resulting from an event of a non-nuclear origin. Dominion Energy reduced the levels of coverage from $415 million to $1 million. During the third quarter of 2022, the total liability protection per nuclear incident available to all participants in the Secondary Financial Protection Program increased from $13.5 billion to $13.7 billion. This increase does not impact Dominion Energy’s responsibility per active unit under the Price-Anderson Amendments Act of 1988. Spent Nuclear Fuel As discussed in Note 23 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021, the Companies entered into contracts with the DOE for the disposal of spent nuclear fuel under provisions of the Nuclear Waste Policy Act of 1982. Guarantees, Surety Bonds and Letters of Credit At September 30, 2022, Dominion Energy had issued four guarantees related to Cove Point, an equity method investment, in support of terminal services, transportation and construction. Two of the Cove Point guarantees have a cumulative maximum exposure of $1.9 billion while the other two guarantees have no maximum limit. No amounts related to these guarantees have been recorded. In addition, at September 30, 2022, Dominion Energy had issued an additional $20 million of guarantees, primarily to support third parties. No amounts related to these guarantees have been recorded. 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. At September 30, 2022, Dominion Energy had issued the following subsidiary guarantees: Maximum Exposure (millions) Commodity transactions (1) $ 2,514 Nuclear obligations (2) 243 Solar (3) 303 Other (4) 1,268 Total (5)(6) $ 4,328 (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. (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 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021 . (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 Additionally, at September 30, 2022, Dominion Energy had purchased $248 million of surety bonds, including $172 million at Virginia Power, and authorized the issuance of letters of credit by financial institutions of $251 million to facilitate commercial transactions by its subsidiaries with third parties. Under the terms of surety bonds, the Companies are obligated to indemnify the respective surety bond company for any amounts paid.

Credit Risk

Credit Risk	9 Months Ended
	Sep. 30, 2022
Risks And Uncertainties [Abstract]
Credit Risk	Note 18. Credit Risk The Companies’ accounting policies for credit risk are discussed in Note 24 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021. At September 30, 2022, Dominion Energy’s credit exposure totaled $133 million, primarily related to price risk management activities. Of this amount, investment grade counterparties, including those internally rated, represented 88%. No single counterparty, whether investment grade or non-investment grade, exceeded $45 million of exposure. At September 30, 2022, Virginia Power’s exposure related to wholesale customers totaled $17 million. Of this amount, investment grade counterparties, including those internally rated, represented 78%. No single counterparty, whether investment grade or non-investment grade, exceeded $4 million of exposure. Credit-Related Contingent Provisions Certain of Dominion Energy’s derivative instruments contain credit-related contingent provisions. These provisions require Dominion Energy 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 as of September 30, 2022 and December 31, 2021, Dominion Energy would have been required to post $189 million and $31 million, respectively, of additional collateral to its counterparties. 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 had posted $124 million and $66 million of collateral at September 30, 2022 and December 31, 2021, respectively, related to derivative instruments with credit-related contingent provisions that are in a liability position and not fully collateralized with cash. In addition, Dominion Energy had posted letters of credit as collateral with counterparties covering $53 million of fair value of derivative instruments in a liability position at September 30, 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 was $313 million and $97 million at September 30, 2022 and December 31, 2021, respectively, which does not include the impact of any offsetting asset positions. Certain of Virginia Power’s derivative instruments contain credit-related contingent provisions. These provisions require Virginia Power to provide collateral upon the occurrence of specific events, primarily a credit rate 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 as of September 30, 2022 and December 31, 2021, Virginia Power would have been required to post $58 million and $22 million, respectively, of additional collateral to its counterparties. The collateral that would be required to be posted includes the impacts of any offsetting asset position and any amounts already posted for derivatives and non-derivative contracts, per contractual terms. Virginia Power had posted $121 million and $54 million of collateral at September 30, 2022 and December 31, 2021, respectively, related to derivative instruments with credit-related contingent provisions that are in a liability position and not fully collateralized with cash. In addition, Virginia Power had posted letters of credit as collateral with counterparties covering $53 million of fair value of derivative instruments in a liability position at September 30, 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 was $179 million and $76 million at September 30, 2022 and December 31, 2021, respectively, which does not include the impact of any offsetting asset positions. See Note 9 for additional information about derivative instruments.

Related-Party Transactions

Related-Party Transactions	9 Months Ended
	Sep. 30, 2022
Related Party Transactions [Abstract]
Related-Party Transactions	Note 19. Related-Party Transactions 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. Dominion Energy’s transactions with equity method investments are described in Note 10. A discussion of significant related-party transactions follows. Virginia Power Transactions with Affiliates 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. At September 30, 2022, Virginia Power’s derivative assets and liabilities with affiliates were $64 million and $3 million, respectively. At December 31, 2021, Virginia Power’s derivative assets and liabilities with affiliates were $29 million and $6 million, respectively. See Note 9 for additional information. Virginia Power participates in certain Dominion Energy benefit plans described in Note 22 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021. At September 30, 2022 and December 31, 2021, amounts due to Dominion Energy associated with the Dominion Energy Pension Plan and included in other deferred credits and other liabilities in the Consolidated Balance Sheets were $576 million and $522 million, respectively. At September 30, 2022 and December 31, 2021, Virginia Power's amounts due from Dominion Energy associated with the Dominion Energy Retiree Health and Welfare Plan and included in other deferred charges and other assets in the Consolidated Balance Sheets were $493 million and $431 million, respectively. While Virginia Power has not been notified by Dominion Energy of any required contributions to be made in 2022, it anticipates that it may have to contribute approximately $175 million as a result of Dominion Energy’s contribution made to its qualified defined benefit pension plans in December 2021. 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: Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 (millions) Commodity purchases from affiliates $ 515 $ 219 $ 1,099 $ 526 Services provided by affiliates (1) 125 116 378 363 Services provided to affiliates 4 6 13 15 (1) Includes capitalized expenditures of $44 million and $39 million for the three months ended September 30, 2022 and 2021, respectively, and $122 million and $121 million for the nine months ended September 30, 2022 and 2021, respectively. Virginia Power has borrowed funds from Dominion Energy under short-term borrowing arrangements. There were $784 million and $699 million in short-term demand note borrowings from Dominion Energy as of September 30, 2022 and December 31, 2021, respectively. Virginia Power had no outstanding borrowings, net of repayments, under the Dominion Energy money pool for its nonregulated subsidiaries as of September 30, 2022 and December 31, 2021. Interest charges related to Virginia Power’s borrowings from Dominion Energy were inconsequential for both the three and nine months ended September 30, 2022 and 2021. There were no issuances of Virginia Power’s common stock to Dominion Energy for the three and nine months ended September 30, 2022 and 2021.

Employee Benefit Plans

Employee Benefit Plans	9 Months Ended
	Sep. 30, 2022
Compensation And Retirement Disclosure [Abstract]
Employee Benefit Plans	Note 20. Employee Benefit Plans 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. The non-service cost components of net periodic benefit (credit) cost are reflected in other income (expense) in Dominion Energy’s Consolidated Statements of Income. The components of Dominion Energy’s provision for net periodic benefit cost (credit) are as follows: Pension Benefits Other Postretirement Benefits 2022 2021 2022 2021 (millions) Three Months Ended September 30, Service cost $ 35 $ 43 $ 5 $ 6 Interest cost 83 80 11 11 Expected return on plan assets (221 ) (209 ) (47 ) (43 ) Amortization of prior service cost (credit) — — (10 ) (11 ) Amortization of net actuarial loss 39 48 — 1 Curtailment (1) — — (8 ) — Net periodic benefit (credit) cost $ (64 ) $ (38 ) $ (49 ) $ (36 ) Nine Months Ended September 30, Service cost $ 106 $ 127 $ 16 $ 18 Interest cost 250 238 34 35 Expected return on plan assets (667 ) (625 ) (143 ) (130 ) Amortization of prior service (credit) cost — — (29 ) (32 ) Amortization of net actuarial loss 119 145 (1 ) 3 Settlements and curtailment (1) — 5 (8 ) — Net periodic benefit (credit) cost $ (192 ) $ (110 ) $ (131 ) $ (106 ) (1) 2022 amounts relate primarily to Dominion Energy’s sale of Hope. 2021 amounts relate primarily to the Dominion Energy executive nonqualified pension plan. Employer Contributions During the three and nine months ended September 30, 2022, Dominion Energy made no contributions to its qualified defined benefit pension plans or other postretirement benefit plans. Dominion Energy is not required to make any contributions to its qualified defined benefit pension plans or to VEBAs associated with its other postretirement plans in 2022. Dominion Energy considers voluntary contributions from time to time, either in the form of cash or equity securities.

Operating Segments

Operating Segments	9 Months Ended
	Sep. 30, 2022
Segment Reporting [Abstract]
Operating Segments	Note 21. 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 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 Gas Distribution Regulated gas distribution and storage (2) 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 Assets Nonregulated electric generation fleet (3) X Noncontrolling interest in Cove Point X (1) I ncludes Virginia Power’s non-jurisdictional generation operations. (2) Includes renewable natural gas operations as well as Wexpro’s gas development and production 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 its corporate, service company and other functions (including unallocated debt) as well as nonregulated retail energy marketing operations (prior to December 2021), including Dominion Energy’s noncontrolling interests in Wrangler (through March 2022) and Dominion Privatization. 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 gas transmission and storage operations presented in discontinued operations, which are discussed in Note 3. In the nine months ended September 30, 2022, Dominion Energy reported after-tax net expenses of $1.7 billion in the Corporate and Other segment, including $1.6 billion of after-tax net expenses for specific items with $1.8 billion of after-tax net expenses attributable to its operating segments. In the nine months ended September 30, 2021, Dominion Energy reported after-tax net expenses of $642 million in the Corporate and Other segment, including $492 million of after-tax net expenses for specific items with $617 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 2022 primarily related to the impact of the following items: • A $691 million ($536 million after-tax) loss related to investments in nuclear decommissioning trust funds, attributable to: • Contracted Assets ($465 million after-tax); and • Dominion Energy Virginia ($71 million after-tax); • A $649 million ($513 million after-tax) loss associated with the sale of Kewaunee, attributable to Contracted Assets; • 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; • A $183 million ($136 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 $135 million ($94 million after-tax) loss related to economic hedging activities, attributable to Contracted Assets; • A $94 million ($70 million after-tax) charge associated with storm damage and service restoration in Virginia Power’s service territory, attributable to Dominion Energy Virginia; • A $60 million ($45 million after-tax) charge for dismantling costs associated with certain retired electric generation facilities, attributable to Dominion Energy Virginia; and • A $17 million benefit ($82 million after-tax loss) associated with the sale of Hope, attributable to Gas Distribution. 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 $447 million ($336 million after-tax) loss related to economic hedging activities, attributable to Contracted Assets; • $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 $151 million ($112 million after-tax) loss from an unbilled revenue reduction at Virginia Power, attributable to Dominion Energy Virginia; • A $119 million ($89 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; 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 Assets; partially offset by • A $309 million ($248 million after-tax) gain related to investments in nuclear decommissioning trust funds, attributable to: • Contracted Assets ($218 million after-tax); and • Dominion Energy Virginia ($30 million after-tax); and • A $130 million ($97 million after-tax) benefit for a change in the CCRO reserve associated with the 2021 Triennial Review, attributable to Dominion Energy Virginia. The following table presents segment information pertaining to Dominion Energy’s operations: Dominion Energy Virginia Gas Distribution Dominion Energy South Carolina Contracted Assets Corporate and Other Adjustments & Eliminations Consolidated Total (millions) Three Months Ended September 30, 2022 Total revenue from external customers $ 2,871 $ 436 $ 915 $ 239 $ (75 ) $ — $ 4,386 Intersegment revenue (4 ) 1 2 5 224 (228 ) — Total operating revenue 2,867 437 917 244 149 (228 ) 4,386 Net loss from discontinued operations — — — — (3 ) — (3 ) Net income (loss) attributable to Dominion Energy 617 67 175 121 (202 ) — 778 Three Months Ended September 30, 2021 Total revenue from external customers $ 2,333 $ 372 $ 799 $ 265 $ (612 ) $ 18 $ 3,175 Intersegment revenue (3 ) 1 1 17 221 (236 ) 1 Total operating revenue 2,330 373 800 282 (391 ) (218 ) 3,176 Net income from discontinued operations — — — — 65 — 65 Net income (loss) attributable to Dominion Energy 599 69 151 119 (284 ) — 654 Nine Months Ended September 30, 2022 Total revenue from external customers $ 7,218 $ 2,230 $ 2,525 $ 645 $ (357 ) $ — $ 12,261 Intersegment revenue (10 ) 2 6 15 686 (699 ) — Total operating revenue 7,208 2,232 2,531 660 329 (699 ) 12,261 Net income from discontinued operations — — — — 15 — 15 Net income (loss) attributable to Dominion Energy 1,575 486 408 242 (1,675 ) — 1,036 Nine Months Ended September 30, 2021 Total revenue from external customers $ 6,072 $ 1,800 $ 2,230 $ 790 $ (857 ) $ 46 $ 10,081 Intersegment revenue (10 ) 4 5 55 686 (737 ) 3 Total operating revenue 6,062 1,804 2,235 845 (171 ) (691 ) 10,084 Net income from discontinued operations — — — — 119 — 119 Net income (loss) attributable to Dominion Energy 1,464 415 337 373 (642 ) — 1,947 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 the nine months ended September 30, 2022, Virginia Power reported after-tax net expenses of $601 million in the Corporate and Other segment, including $641 million of after-tax net expenses for specific items with $635 million of after-tax net expenses attributable to its operating segment. In the nine months ended September 30, 2021, Virginia Power reported after-tax net expenses of $118 million in the Corporate and Other segment, including $186 million of after-tax net expenses for specific items all of which was attributable to its operating segment. The net expenses for specific items attributable to Virginia Power’s operating segment in 2022 primarily related to the impact of the following items: • 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; • A $183 million ($136 million after-tax) charge for amortization of a regulatory asset established in connection with the settlement of the 2021 Triennial Review; • A $96 million ($71 million after-tax) loss related to investments in nuclear decommissioning trust funds; • A $94 million ($70 million after-tax) charge associated with storm damage and service restoration in its service territory; and • A $60 million ($45 million after-tax) charge for dismantling costs associated with certain retired electric generation facilities. The net expenses for specific items attributable to Virginia Power’s 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 $119 million ($89 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; and • A $68 million ($50 million after-tax) charge associated with storm damage and service restoration in its service territory; partially offset by • A $130 million ($97 million after-tax) benefit for a change in the CCRO reserve associated with the 2021 Triennial Review. The following table presents segment information pertaining to Virginia Power’s operations: Dominion Energy Virginia Corporate and Other Consolidated Total (millions) Three Months Ended September 30, 2022 Operating revenue $ 2,865 $ 10 $ 2,875 Net income (loss) 618 (47 ) 571 Three Months Ended September 30, 2021 Operating revenue $ 2,326 $ (350 ) $ 1,976 Net income (loss) 601 (45 ) 556 Nine Months Ended September 30, 2022 Operating revenue $ 7,200 $ 17 $ 7,217 Net income (loss) 1,576 (601 ) 975 Nine Months Ended September 30, 2021 Operating revenue $ 6,048 $ (501 ) $ 5,547 Net income (loss) 1,462 (118 ) 1,344

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2022
Accounting Policies [Abstract]
Basis of Accounting	As permitted by the rules and regulations of the SEC, the Companies’ accompanying unaudited Consolidated Financial Statements contain certain condensed financial information and exclude certain footnote disclosures normally included in annual audited consolidated financial statements prepared in accordance with GAAP. These unaudited Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements and Notes in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021. In the Companies’ opinion, the accompanying unaudited Consolidated Financial Statements contain all adjustments necessary to present fairly their financial position at September 30, 2022, their results of operations and changes in equity for the three and nine months ended September 30, 2022 and 2021 and their cash flows for the nine months ended September 30, 2022 and 2021. Such adjustments are normal and recurring in nature unless otherwise noted.
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 and expenses for the periods presented. Actual results may differ from those estimates.
Consolidation	The Companies’ accompanying unaudited 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) and Terra Nova Renewable Partners’ 33% interest in certain Dominion Energy nonregulated solar projects (through December 2021) are reflected as noncontrolling interest in Dominion Energy’s Consolidated Financial Statements. See Note 10 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021 for additional information.
Reclassifications	Certain amounts in the Companies’ 2021 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. Amounts disclosed for Dominion Energy are inclusive of Virginia Power, where applicable. There have been no significant changes from Note 2 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021, with the exception of the items described below.
Cash, Restricted Cash and Equivalents	Cash, Restricted Cash and Equivalents 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 nine months ended September 30, 2022 and 2021: Cash, Restricted Cash and Equivalents at End of Period Cash, Restricted Cash and Equivalents at Beginning of Period September 30, 2022 September 30, 2021 December 31, 2021 December 31, 2020 (millions) Dominion Energy Cash and cash equivalents (1) $ 163 $ 195 $ 283 $ 179 Restricted cash and equivalents (2)(3) 177 72 125 68 Cash, restricted cash and equivalents shown in the Consolidated Statements of Cash Flows $ 340 $ 267 $ 408 $ 247 Virginia Power Cash and cash equivalents $ 18 $ 38 $ 26 $ 35 Restricted cash and equivalents (3) 2 1 — — Cash, restricted cash and equivalents shown in the Consolidated Statements of Cash Flows $ 20 $ 39 $ 26 $ 35 (1) At September 30, 2021 and December 31, 2020, Dominion Energy had $15 million and $7 million of cash and cash equivalents included in current assets held for sale, respectively. No amounts were included in current assets held for sale at September 30, 2022 and December 31, 2021. (2) At September 30, 2021 and December 31, 2020, Dominion Energy had $22 million and $3 million of restricted cash and equivalents included in current assets held for sale, respectively. No amounts were included in current assets held for sale at September 30, 2022 and December 31, 2021. (3) Restricted cash and equivalents balances are presented within other current assets in the Companies’ Consolidated Balance Sheets. Supplemental Cash Flow Information The following table provides supplemental disclosure of cash flow information related to Dominion Energy: Nine Months Ended September 30, 2022 2021 (millions) Significant noncash investing and financing activities: (1) Accrued capital expenditures $ 745 $ 374 Leases (2) 129 75 (1) See Note 10 for noncash investing activities related to the acquisition of a noncontrolling interest in Dominion Privatization and Notes 16 and 17 for noncash financing activities related to the remarketing of Series A Preferred Stock and the issuance of common stock and transfer of property associated with the settlement of litigation. (2) Includes $29 million and $34 million of financing leases at September 30, 2022 and 2021, respectively, and $100 million and $41 million of operating leases at September 30, 2022 and 2021, respectively. The following table provides supplemental disclosure of cash flow information related to Virginia Power: Nine Months Ended September 30, 2022 2021 (millions) Significant noncash investing and financing activities: Accrued capital expenditures $ 454 $ 238 Leases (1) 113 59 (1) Includes $20 million and $24 million of financing leases at September 30, 2022 and 2021, respectively, and $93 million and $35 million of operating leases at September 30, 2022 and 2021, respectively
Property, Plant and Equipment	Property, Plant and Equipment 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 $15 million ($11 million after-tax) and $45 million ($33 million after-tax) for the three and nine months ended September 30, 2022, respectively, and an increase in Dominion Energy’s EPS of $0.01 and $0.04 for the three and nine months ended September 30, 2022, respectively. The revision is expected to decrease Virginia Power’s annual depreciation expense by approximately $60 million ($45 million after-tax) and increase Dominion Energy’s EPS by approximately $0.05. For the three and nine months ended September 30, 2022, Virginia Power recorded charges of $18 million ($14 million after-tax) and $60 million ($45 million after-tax), respectively, associated with dismantling certain coal- and oil-fired generating units retired before the end of their useful lives, recorded in impairment of assets and other charges (benefits) in its Consolidated Statements of Income.
Asset Retirement Obligations	Asset Retirement Obligations In the second quarter of 2021, Dominion Energy revised its estimated cash flow projections associated with the recovery of spent nuclear fuel costs for its AROs associated with the decommissioning of Kewaunee. As a result, Dominion Energy recorded a charge of $44 million ($35 million after-tax) within other operations and maintenance expense in its Consolidated Statements of Income.
Fair Value Measurements	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.
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)	9 Months Ended
	Sep. 30, 2022
Accounting Policies [Abstract]
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 nine months ended September 30, 2022 and 2021: Cash, Restricted Cash and Equivalents at End of Period Cash, Restricted Cash and Equivalents at Beginning of Period September 30, 2022 September 30, 2021 December 31, 2021 December 31, 2020 (millions) Dominion Energy Cash and cash equivalents (1) $ 163 $ 195 $ 283 $ 179 Restricted cash and equivalents (2)(3) 177 72 125 68 Cash, restricted cash and equivalents shown in the Consolidated Statements of Cash Flows $ 340 $ 267 $ 408 $ 247 Virginia Power Cash and cash equivalents $ 18 $ 38 $ 26 $ 35 Restricted cash and equivalents (3) 2 1 — — Cash, restricted cash and equivalents shown in the Consolidated Statements of Cash Flows $ 20 $ 39 $ 26 $ 35 (1) At September 30, 2021 and December 31, 2020, Dominion Energy had $15 million and $7 million of cash and cash equivalents included in current assets held for sale, respectively. No amounts were included in current assets held for sale at September 30, 2022 and December 31, 2021. (2) At September 30, 2021 and December 31, 2020, Dominion Energy had $22 million and $3 million of restricted cash and equivalents included in current assets held for sale, respectively. No amounts were included in current assets held for sale at September 30, 2022 and December 31, 2021. (3) Restricted cash and equivalents balances are presented within other current assets in the Companies’ Consolidated Balance Sheets.
Schedule of Supplemental Cash Flow Information	The following table provides supplemental disclosure of cash flow information related to Dominion Energy: Nine Months Ended September 30, 2022 2021 (millions) Significant noncash investing and financing activities: (1) Accrued capital expenditures $ 745 $ 374 Leases (2) 129 75 (1) See Note 10 for noncash investing activities related to the acquisition of a noncontrolling interest in Dominion Privatization and Notes 16 and 17 for noncash financing activities related to the remarketing of Series A Preferred Stock and the issuance of common stock and transfer of property associated with the settlement of litigation. (2) Includes $29 million and $34 million of financing leases at September 30, 2022 and 2021, respectively, and $100 million and $41 million of operating leases at September 30, 2022 and 2021, respectively. The following table provides supplemental disclosure of cash flow information related to Virginia Power: Nine Months Ended September 30, 2022 2021 (millions) Significant noncash investing and financing activities: Accrued capital expenditures $ 454 $ 238 Leases (1) 113 59 Includes $20 million and $24 million of financing leases at September 30, 2022 and 2021, respectively, and $93 million and $35 million of operating leases at September 30, 2022 and 2021, respectively

Acquisitions and Dispositions (

Acquisitions and Dispositions (Tables) - Dominion Energy Gas Holdings, LLC - GT&S Transaction	9 Months Ended
	Sep. 30, 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: Three Months Ended September 30, 2021 Nine Months Ended September 30, 2021 Q-Pipe Group Q-Pipe Group (millions) Operating revenue $ 62 $ 188 Operating expense 24 52 Other income (1) 26 27 Interest and related charges 7 17 Income before income taxes ( 2 ) 57 146 Income tax expense 12 29 Net income attributable to Dominion Energy $ 45 $ 117 (1) Includes a $25 million benefit associated with the termination of the Q-Pipe Transaction in the third quarter of 2021. (2) Excludes $18 million income tax benefit recorded in the third quarter of 2021 associated with the GT&S Transaction.
Capital Expenditures and Significant Noncash Items Relating to the Disposal Groups	Capital expenditures and significant noncash items relating to the Q-Pipe Group included the following: Nine Months Ended September 30, 2021 (millions) Capital expenditures $ 26 Significant noncash items: Accrued capital expenditures 2

Operating Revenue (Tables)

Operating Revenue (Tables)	9 Months Ended
	Sep. 30, 2022
Regulated And Unregulated Operating Revenue [Abstract]
Schedule of Operating Revenue	The Companies’ operating revenue consists of the following: Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 (millions) Dominion Energy Regulated electric sales: Residential $ 1,609 $ 1,281 $ 4,013 $ 3,453 Commercial 1,349 831 3,336 2,311 Industrial 253 194 670 547 Government and other retail 353 258 922 670 Wholesale 66 52 181 131 Nonregulated electric sales 345 271 948 754 Regulated gas sales: Residential 154 132 1,154 950 Commercial 83 61 462 346 Other 62 31 158 88 Nonregulated gas sales 2 7 7 74 Regulated gas transportation and storage 229 208 767 698 Other regulated revenues 76 47 195 187 Other nonregulated revenues (1) 74 61 183 149 Total operating revenue from contracts with customers 4,655 3,434 12,996 10,358 Other revenues (2)(3) (269 ) (258 ) (735 ) (274 ) Total operating revenue $ 4,386 $ 3,176 $ 12,261 $ 10,084 Virginia Power Regulated electric sales: Residential $ 1,238 $ 935 $ 3,069 $ 2,572 Commercial 1,105 604 2,696 1,715 Industrial 134 94 347 268 Government and other retail 335 241 874 625 Wholesale 38 31 101 79 Nonregulated electric sales 17 18 62 32 Other regulated revenues 64 37 195 165 Other nonregulated revenues (1)(4) 28 27 50 61 Total operating revenue from contracts with customers 2,959 1,987 7,394 5,517 Other revenues (2)(4) (84 ) (11 ) (177 ) 30 Total operating revenue $ 2,875 $ 1,976 $ 7,217 $ 5,547 (1) Includes sales which are considered to be goods transferred at a point in time of $10 million and $9 million for the three months ended September 30, 2022 and 2021, respectively, and $35 million and $24 million for the nine months ended September 30, 2022 and 2021, respectively, at Dominion Energy, primarily consisting of sales of commodities related to nonregulated extraction activities and other miscellaneous products. Additionally, sales of renewable energy credits were $21 million and $16 million for the three months ended September 30, 2022 and 2021, respectively, and $32 million and $29 million for the nine months ended September 30, 2022 and 2021, respectively, at Dominion Energy and $13 million for both the three months ended September 30, 2022 and 2021 and $13 million and $22 million for the nine months ended September 30, 2022 and 2021, respectively, at Virginia Power. ( 2 ) Includes alternative revenue of $20 million and $3 million at Dominion Energy and $20 million and $3 million at Virginia Power for the three months ended September 30, 2022 and 2021, respectively, and $90 million and $50 million at Dominion Energy and $47 million and $41 million at Virginia Power for the nine months ended September 30, 2022 and 2021, respectively. ( 3 ) (4) See Note 19 for amounts attributable to affiliates.
Schedule of Aggregate Amount of Transaction Price Allocated To Fixed-price Performance Obligations That Unsatisfied At End of Reporting Period And Expected To be Recognized	The table below discloses the aggregate amount of the transaction price allocated to fixed-price performance obligations that are unsatisfied (or partially unsatisfied) at the end of the reporting period and when Dominion Energy expects to recognize this revenue. These revenues relate to contracts containing fixed prices where Dominion Energy will earn the associated revenue over time as it stands ready to perform services provided. This disclosure does not include revenue related to performance obligations that are part of a contract with original durations of one year or less. In addition, this disclosure does not include expected consideration related to performance obligations for which Dominion Energy elects to recognize revenue in the amount it has a right to invoice. Revenue expected to be recognized on multi-year contracts in place at September 30, 2022 2022 2023 2024 2025 2026 Thereafter Total (millions) Dominion Energy $ 18 $ 68 $ 61 $ 54 $ 48 $ 449 $ 698

Income Taxes (Tables)

Income Taxes (Tables)	9 Months Ended
	Sep. 30, 2022
Income Tax Disclosure [Abstract]
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 Nine Months Ended September 30, 2022 2021 2022 2021 U.S. statutory rate 21.0 % 21.0 % 21.0 % 21.0 % Increases (reductions) resulting from: Recognition of taxes - sale of subsidiary stock 7.3 — — — State taxes, net of federal benefit 4.7 2.0 4.4 4.5 Investment tax credits (6.4 ) (5.6 ) (8.9 ) (5.8 ) Production tax credits (0.7 ) (0.5 ) (1.0 ) (0.6 ) Reversal of excess deferred income taxes (6.1 ) (3.8 ) (3.7 ) (2.2 ) State legislative change — (1.0 ) — (1.0 ) Changes in state deferred taxes associated with assets held for sale 0.4 (0.5 ) — — AFUDC - equity (0.6 ) (0.5 ) (0.8 ) (0.5 ) Absence of tax on noncontrolling interest — (0.2 ) — — Other, net (0.4 ) (1.1 ) 0.5 — Effective tax rate 19.2 % 9.8 % 11.5 % 15.4 %

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2022
Earnings Per Share [Abstract]
Earnings Per Share Computation	The following table presents the calculation of Dominion Energy’s basic and diluted EPS: Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 (millions, except EPS) Net income attributable to Dominion Energy from continuing operations $ 781 $ 589 $ 1,021 $ 1,828 Preferred stock dividends (see Note 16) (20 ) (16 ) (72 ) (48 ) Net income attributable to Dominion Energy from continuing operations – Basic 761 573 949 1,780 Dilutive effect of 2019 Equity Units (1) — — 12 — Net income attributable to Dominion Energy from continuing operations - Diluted $ 761 $ 573 $ 961 $ 1,780 Net income (loss) attributable to Dominion Energy from discontinued operations - Basic & Diluted $ (3 ) $ 65 $ 15 $ 119 Average shares of common stock outstanding – Basic 832.6 808.7 820.6 807.1 Net effect of dilutive securities (2) 0.6 1.3 12.1 0.5 Average shares of common stock outstanding – Diluted 833.2 810.0 832.7 807.6 EPS from continuing operations – Basic $ 0.91 $ 0.71 $ 1.16 $ 2.20 EPS from discontinued operations – Basic — 0.08 0.02 0.15 EPS attributable to Dominion Energy – Basic $ 0.91 $ 0.79 $ 1.18 $ 2.35 EPS from continuing operations – Diluted $ 0.91 $ 0.71 $ 1.15 $ 2.20 EPS from discontinued operations – Diluted — 0.08 0.02 0.15 EPS attributable to Dominion Energy – Diluted $ 0.91 $ 0.79 $ 1.17 $ 2.35 (1) As discussed in Note 16, effective in June 2022 through its settlement 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 the three and nine months ended September 30, 2021. (2) Dilutive securities for the three and nine months ended September 30, 2022 consist primarily of the 2019 Equity Units through their settlement in June 2022 (applying the if converted method as updated effective January 2022), 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 (applying the treasury stock method). See Notes 16 and 17 for additional information

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	9 Months Ended
	Sep. 30, 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 Rate Total Derivative-Hedging Activities (1) Investment Securities (2) Pension and other postretirement benefit costs (3) Equity Method Investees (4) Total (millions) Three Months Ended September 30, 2022 Beginning balance $ — $ (283 ) $ (283 ) $ (40 ) $ (1,070 ) $ (3 ) $ (1,396 ) Other comprehensive income before reclassifications: gains (losses) — 10 10 (27 ) — — (17 ) Amounts reclassified from AOCI: (gains) losses Interest and related charges — 16 16 — — — 16 Other income (expense) — — — 2 35 — 37 Total — 16 16 2 35 — 53 Income tax expense (benefit) — (4 ) (4 ) (1 ) (9 ) — (14 ) Total, net of tax — 12 12 1 26 — 39 Net current period other comprehensive income (loss) — 22 22 (26 ) 26 — 22 Ending balance $ — $ (261 ) $ (261 ) $ (66 ) $ (1,044 ) $ (3 ) $ (1,374 ) Three Months Ended September 30, 2021 Beginning balance $ — $ (371 ) $ (371 ) $ 41 $ (1,309 ) $ (1 ) $ (1,640 ) Other comprehensive income before reclassifications: gains (losses) — (2 ) (2 ) 4 (1 ) (3 ) (2 ) Amounts reclassified from AOCI: (gains) losses Interest and related charges — 14 14 — — — 14 Other income (expense) — — — (4 ) 25 — 21 Total — 14 14 (4 ) 25 — 35 Income tax expense (benefit) — (4 ) (4 ) 1 (6 ) — (9 ) Total, net of tax — 10 10 (3 ) 19 — 26 Net current period other comprehensive income (loss) — 8 8 1 18 (3 ) 24 Ending balance $ — $ (363 ) $ (363 ) $ 42 $ (1,291 ) $ (4 ) $ (1,616 ) (1) Net of $87 million, $94 million, $121 million and $125 million tax at September 30, 2022, June 30, 2022, September 30, 2021 and June 30, 2021, respectively. (2) Net of $23 million, $14 million, $(11) million and $(12) million tax at September 30, 2022, June 30, 2022, September 30, 2021 and June 30, 2021, respectively. (3) Net of $367 million, $376 million, $448 million and $455 million tax at September 30, 2022, June 30, 2022, September 30, 2021 and June 30, 2021, respectively. (4) Net of $1 million, $1 million, $1 million and $— million tax at September 30, 2022, June 30, 2022, September 30, 2021 and June 30, 2021, respectively. Commodity Interest Rate Total Derivative-Hedging Activities (1) Investment Securities (2) Pension and other postretirement benefit costs (3) Equity Method Investees (4) Total (millions) Nine Months Ended September 30, 2022 Beginning balance $ — $ (358 ) $ (358 ) $ 37 $ (1,133 ) $ (4 ) $ (1,458 ) Other comprehensive income before reclassifications: gains (losses) — 64 64 (116 ) 30 1 (21 ) Amounts reclassified from AOCI: (gains) losses Interest and related charges — 44 44 — — — 44 Other income (expense) — — — 18 80 — 98 Total — 44 44 18 80 — 142 Income tax expense (benefit) — (11 ) (11 ) (5 ) (21 ) — (37 ) Total, net of tax — 33 33 13 59 — 105 Net current period other comprehensive income (loss) — 97 97 (103 ) 89 1 84 Ending balance $ — $ (261 ) $ (261 ) $ (66 ) $ (1,044 ) $ (3 ) $ (1,374 ) Nine Months Ended September 30, 2021 Beginning balance $ (1 ) $ (418 ) $ (419 ) $ 62 $ (1,359 ) $ (1 ) $ (1,717 ) Other comprehensive income before reclassifications: gains (losses) — 21 21 (15 ) 5 (3 ) 8 Amounts reclassified from AOCI: (gains) losses Purchased gas 1 — 1 — — — 1 Interest and related charges — 46 46 — — — 46 Other income (expense) — — — (7 ) 85 — 78 Total 1 46 47 (7 ) 85 — 125 Income tax expense (benefit) — (12 ) (12 ) 2 (22 ) — (32 ) Total, net of tax 1 34 35 (5 ) 63 — 93 Net current period other comprehensive income (loss) 1 55 56 (20 ) 68 (3 ) 101 Ending balance $ — $ (363 ) $ (363 ) $ 42 $ (1,291 ) $ (4 ) $ (1,616 ) (1) Net of $87 million, $119 million, $121 million and $141 million tax at September 30, 2022, December 31, 2021, September 30, 2021 and December 31, 2020, respectively. (2) Net of $23 million, $(10) million, $(11) million and $(21) million tax at September 30, 2022, December 31, 2021, September 30, 2021 and December 31, 2020, respectively. (3) Net of $367 million, $396 million, $448 million, and $478 million tax at September 30, 2022, December 31, 2021, September 30, 2021 and December 31, 2020, respectively. (4) Net of $1 million, $ 1 million, $1 million and $— tax at September 30, 2022, December 31, 2021, September 30, 2021 and December 31, 2020, respectively.
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 reclassifications out of AOCI by component: Interest Rate Total Derivative-Hedging Activities (1) Investment Securities (2) Total (millions) Three Months Ended September 30, 2022 Beginning balance $ — $ — $ (7 ) $ (7 ) Other comprehensive income before reclassifications: gains (losses) 13 13 (4 ) 9 Amounts reclassified from AOCI: (gains) losses Interest and related charges 1 1 — 1 Other income (expense) — — — — Total 1 1 — 1 Income tax expense (benefit) (1 ) (1 ) — (1 ) Total, net of tax — — — — Net current period other comprehensive income (loss) 13 13 (4 ) 9 Ending balance $ 13 $ 13 $ (11 ) $ 2 Three Months Ended September 30, 2021 Beginning balance $ (39 ) $ (39 ) $ 6 $ (33 ) Other comprehensive income before reclassifications: gains (losses) (2 ) (2 ) — (2 ) Amounts reclassified from AOCI: (gains) losses Interest and related charges 1 1 — 1 Other income (expense) — — (1 ) (1 ) Total 1 1 (1 ) — Income tax expense (benefit) (1 ) (1 ) — (1 ) Total, net of tax — — (1 ) (1 ) Net current period other comprehensive income (loss) (2 ) (2 ) (1 ) (3 ) Ending balance $ (41 ) $ (41 ) $ 5 $ (36 ) (1) Net of $(4) million, $— million, $14 million and $14 million tax at September 30, 2022, June 30, 2022, September 30, 2021 and June 30, 2021, respectively (2) Net of $4 million, $3 million, $(2) million and $(2) million tax at September 30, 2022, June 30, 2022, September 30, 2021 and June 30, 2021, respectively. Interest Rate Total Derivative-Hedging Activities (1) Investment Securities (2) Total (millions) Nine Months Ended September 30, 2022 Beginning balance $ (45 ) $ (45 ) $ 4 $ (41 ) Other comprehensive income before reclassifications: gains (losses) 57 57 (14 ) 43 Amounts reclassified from AOCI: (gains) losses Interest and related charges 2 2 — 2 Other income (expense) — — (1 ) (1 ) Total 2 2 (1 ) 1 Income tax expense (benefit) (1 ) (1 ) — (1 ) Total, net of tax 1 1 (1 ) — Net current period other comprehensive income (loss) 58 58 (15 ) 43 Ending balance $ 13 $ 13 $ (11 ) $ 2 Nine Months Ended September 30, 2021 Beginning balance $ (60 ) $ (60 ) $ 8 $ (52 ) Other comprehensive income before reclassifications: gains (losses) 18 18 (2 ) 16 Amounts reclassified from AOCI: (gains) losses Interest and related charges 2 2 — 2 Other income (expense) — — (1 ) (1 ) Total 2 2 (1 ) 1 Income tax expense (benefit) (1 ) (1 ) — (1 ) Total, net of tax 1 1 (1 ) — Net current period other comprehensive income (loss) 19 19 (3 ) 16 Ending balance $ (41 ) $ (41 ) $ 5 $ (36 ) (1) Net of $(4) million, $16 million, $14 million and $21 million tax at September 30, 2022, December 31, 2021, September 30, 2021 and December 31, 2020, respectively. (2) Net of $4 million, $(2) million, $(2) million and $(3) million tax at September 30, 2022, December 31, 2021, September 30, 2021 and December 31, 2020, respectively.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2022
Fair Value Inputs, Assets, Quantitative Information	The following table presents Dominion Energy’s quantitative information about Level 3 fair value measurements at September 30, 2022. The range and weighted average are presented in dollars for market price inputs and percentages for price volatility. Fair Value (millions) Valuation Techniques Unobservable Input Range Weighted Average (1) Assets Physical and financial forwards: Natural gas (2) $ 1 Discounted cash flow Market price (per Dth) (3) (2) - 6 (1) FTRs 263 Discounted cash flow Market price (per MWh) (3) 1-19 5 Electricity 211 Discounted cash flow Market price (per MWh) (3) 28-199 51 Physical options: Natural gas (2) 24 Option model Market price (per Dth) (3) 4-17 10 Price volatility (4) 13%-70% 51% Total assets $ 499 Liabilities Physical and financial forwards: Natural gas (2) $ 12 Discounted cash flow Market price (per Dth) (3) (2)-8 1 FTRs 5 Discounted cash flow Market price (per MWh) (3) 1-10 4 Total liabilities $ 17 (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 Dominion Energy’s assets and liabilities that are measured at fair value on a recurring basis for each hierarchy level, including both current and noncurrent portions: Level 1 Level 2 Level 3 Total (millions) At September 30, 2022 Assets Derivatives: Commodity $ — $ 371 $ 499 $ 870 Interest rate — 1,593 — 1,593 Foreign currency exchange rate — 6 — 6 Investments (1) Equity securities: U.S. 3,514 — — 3,514 Fixed income: Corporate debt instruments — 563 — 563 Government securities 159 1,067 — 1,226 Total assets $ 3,673 $ 3,600 $ 499 $ 7,772 Liabilities Derivatives: Commodity $ — $ 1,492 $ 17 $ 1,509 Interest rate — 475 — 475 Foreign currency exchange rate — 387 — 387 Total liabilities $ — $ 2,354 $ 17 $ 2,371 At December 31, 2021 Assets Derivatives: Commodity $ — $ 52 $ 230 $ 282 Interest rate — 323 — 323 Foreign currency exchange rate — 8 — 8 Investments (1) Equity securities: U.S. 5,241 — — 5,241 Fixed income: Corporate debt instruments — 881 — 881 Government securities 199 1,256 — 1,455 Cash equivalents and other (29 ) — — (29 ) Total assets $ 5,411 $ 2,520 $ 230 $ 8,161 Liabilities Derivatives: Commodity $ — $ 461 $ 8 $ 469 Interest rate — 399 — 399 Total liabilities $ — $ 860 $ 8 $ 868 (1) Includes investments held in the nuclear decommissioning and rabbi trusts. Excludes $238 million and $366 million of assets at September 30, 2022 and December 31, 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 Dominion Energy's assets and liabilities measured at fair value on a recurring basis and included in the Level 3 fair value category: Three Months Ended Nine Months Ended September 30, September 30, 2022 2021 2022 2021 (millions) Beginning balance $ 480 $ 62 $ 222 $ 103 Total realized and unrealized gains (losses): Included in earnings: Operating revenue — (6 ) — (8 ) Electric fuel and other energy-related purchases 181 29 346 12 Included in regulatory assets/liabilities 2 88 243 49 Settlements (181 ) (29 ) (346 ) (12 ) Purchases — — 17 — Ending balance $ 482 $ 144 $ 482 $ 144
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: September 30, 2022 December 31, 2021 Carrying Amount Estimated Fair Value (1) Carrying Amount Estimated Fair Value (1) (millions) Dominion Energy Long-term debt (2) $ 38,487 $ 34,700 $ 35,996 $ 40,947 Supplemental credit facility borrowings 450 450 — — Junior subordinated notes (3) 1,387 1,338 1,386 1,470 Virginia Power Long-term debt (3) $ 15,618 $ 13,840 $ 13,753 $ 16,021 (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 includes 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 September 30, 2022. ( 3 ) Carrying amount includes current portions included in securities due within one year and amounts which represent the unamortized debt issuance costs, discount or premium.
Virginia Electric and Power Company
Fair Value Inputs, Assets, Quantitative Information	The following table presents Virginia Power’s quantitative information about Level 3 fair value measurements at September 30, 2022. The range and weighted average are presented in dollars for market price inputs and percentages for price volatility. Fair Value (millions) Valuation Techniques Unobservable Input Range Weighted Average (1) Assets Physical and financial forwards: Natural gas (2) $ 1 Discounted cash flow Market price (per Dth) (3) (2) - 6 (1) FTRs 263 Discounted cash flow Market price (per MWh) (3) 1 - 19 5 Physical options: Natural gas (2) 24 Option model Market price (per Dth) (3) 4-17 10 Price volatility (4) 13%-70% 51 % Total assets $ 288 Liabilities Physical and financial forwards: Natural gas (2) $ 12 Discounted cash flow Market price (per Dth) (3) (2) - 5 1 FTRs 5 Discounted cash flow Market price (per MWh) (3) 1-10 4 Total liabilities $ 17 (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 Virginia Power’s assets and liabilities that are measured at fair value on a recurring basis for each hierarchy level, including both current and noncurrent portions: Level 1 Level 2 Level 3 Total (millions) At September 30, 2022 Assets Derivatives: Commodity $ — $ 71 $ 288 $ 359 Interest rate — 596 — 596 Foreign currency exchange rate — 6 — 6 Investments (1) Equity securities: U.S. 1,870 — — 1,870 Fixed income: Corporate debt instruments — 372 — 372 Government securities 88 518 — 606 Total assets $ 1,958 $ 1,563 $ 288 $ 3,809 Liabilities Derivatives: Commodity $ — $ 486 $ 17 $ 503 Interest rate — 27 — 27 Foreign currency exchange rate — 387 — 387 Total liabilities $ — $ 900 $ 17 $ 917 At December 31, 2021 Assets Derivatives: Commodity $ — $ 36 $ 110 $ 146 Interest rate — 146 — 146 Foreign currency exchange rate — 8 — 8 Investments (1) Equity securities: U.S. 2,420 — — 2,420 Fixed income: Corporate debt instruments — 531 — 531 Government securities 93 506 — 599 Cash equivalents and other (3 ) — — (3 ) Total assets $ 2,510 $ 1,227 $ 110 $ 3,847 Liabilities Derivatives: Commodity $ — $ 125 $ 8 $ 133 Interest rate — 337 — 337 Total liabilities $ — $ 462 $ 8 $ 470 (1) Includes investments held in the nuclear decommissioning trusts. Excludes $150 million and $185 million of assets at September 30, 2022 and December 31, 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 Virginia Power’s assets and liabilities measured at fair value on a recurring basis and included in the Level 3 fair value category: Three Months Ended Nine Months Ended September 30, September 30, 2022 2021 2022 2021 (millions) Beginning balance $ 245 $ 74 $ 102 $ 103 Total realized and unrealized gains (losses): Included in earnings: Electric fuel and other energy-related purchases 142 27 293 10 Included in regulatory assets/liabilities 26 41 152 12 Settlements (142 ) (27 ) (293 ) (10 ) Purchases — — 17 — Ending balance $ 271 $ 115 $ 271 $ 115

Derivatives and Hedge Account_2

Derivatives and Hedge Accounting Activities (Tables)	9 Months Ended
	Sep. 30, 2022
Offsetting Assets	The tables below present Dominion Energy’s 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: September 30, 2022 December 31, 2021 Gross Amounts Not Offset in the Consolidated Balance Sheet Gross Amounts Not Offset in the Consolidated Balance Sheet Gross Assets Presented in the Consolidated Balance Sheet (1) Financial Instruments Cash Collateral Received Net Amounts Gross Assets Presented in the Consolidated Balance Sheet (1) Financial Instruments Cash Collateral Received Net Amounts (millions) Commodity contracts: Over-the-counter $ 367 $ 11 $ — $ 356 $ 153 $ 13 $ — $ 140 Exchange 292 287 — 5 9 7 — 2 Interest rate contracts: Over-the-counter 1,593 410 — 1,183 323 49 — 274 Foreign currency exchange rate contracts: Over-the-counter 6 6 — — 8 — — 8 Total derivatives, subject to a master netting or similar arrangement $ 2,258 $ 714 $ — $ 1,544 $ 493 $ 69 $ — $ 424 (1) Excludes $211
Offsetting Liabilities	September 30, 2022 December 31, 2021 Gross Amounts Not Offset in the Consolidated Balance Sheet Gross Amounts Not Offset in the Consolidated Balance Sheet Gross Liabilities Presented in the Consolidated Balance Sheet (1) Financial Instruments Cash Collateral Paid Net Amounts Gross Liabilities Presented in the Consolidated Balance Sheet (1) Financial Instruments Cash Collateral Paid Net Amounts (millions) Commodity contracts: Over-the-counter $ 660 $ 17 $ 121 $ 522 $ 95 $ 13 $ 54 $ 28 Exchange 849 287 562 — 374 7 367 — Interest rate contracts: Over-the-counter 475 257 3 215 399 49 11 339 Foreign currency exchange rate contracts: Over-the-counter 387 153 — 234 — — — — Total derivatives, subject to a master netting or similar arrangement $ 2,371 $ 714 $ 686 $ 971 $ 868 $ 69 $ 432 $ 367 (1) There were no derivative liabilities that are not subject to master netting or similar arrangements at September 30, 2022 or December 31, 2021.
Schedule of Volume of Derivative Activity	The following table presents the volume of Dominion Energy’s derivative activity at September 30, 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 its long and short positions. Current Noncurrent Natural Gas (bcf): Fixed price 47 7 Basis (1) 159 439 Electricity (MWh in millions): Fixed price 16 31 FTRs 72 — Oil (Gal in millions) 6 — Interest rate (2) $ 358 $ 12,581 Foreign currency exchange rate (2) Danish Krone 468 kr. 4,167 kr. Euro €351 €2,651 (1) Includes options. (2) 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 Dominion Energy’s Consolidated Balance Sheet at September 30, 2022: AOCI After-Tax Amounts Expected to be Reclassified to Earnings During the Next 12 Months After-Tax Maximum Term (millions) Interest rate $ (261 ) $ (33 ) 387 months Total $ (261 ) $ (33 )
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 the Consolidated Balance Sheet related to cumulative basis adjustments for fair value hedges, all of which related to discontinued hedging relationships at both September 30, 2022 and December 31, 2021: Carrying Amount of the Hedged Asset (Liability) Cumulative Amount of Fair Value Hedging Adjustments Included in the Carrying Amount of the Hedged Assets (Liabilities) September 30, 2022 December 31, 2021 September 30, 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 table presents the fair values of Dominion Energy’s derivatives and where they are presented in its Consolidated Balance Sheets: Fair Value – Derivatives under Hedge Accounting Fair Value – Derivatives not under Hedge Accounting Total Fair Value (millions) September 30, 2022 ASSETS Current Assets Commodity $ — $ 610 $ 610 Interest rate — 54 54 Foreign currency exchange rate — 6 6 Total current derivative assets — 670 670 Noncurrent Assets Commodity — 260 260 Interest rate 596 943 1,539 Total noncurrent derivative assets 596 1,203 1,799 Total derivative assets $ 596 $ 1,873 $ 2,469 LIABILITIES Current Liabilities Commodity $ — $ 1,083 $ 1,083 Interest rate — 46 46 Foreign currency exchange rate — 50 50 Total current derivative liabilities — 1,179 1,179 Noncurrent Liabilities Commodity — 426 426 Interest rate 27 402 429 Foreign currency exchange rate — 337 337 Total noncurrent derivative liabilities 27 1,165 1,192 Total derivative liabilities $ 27 $ 2,344 $ 2,371 December 31, 2021 ASSETS Current Assets Commodity $ — $ 103 $ 103 Interest rate 1 17 18 Foreign currency exchange rate — 1 1 Total current derivative assets 1 121 122 Noncurrent Assets Commodity — 179 179 Interest rate 145 160 305 Foreign currency exchange rate — 7 7 Total noncurrent derivative assets 145 346 491 Total derivative assets $ 146 $ 467 $ 613 LIABILITIES Current Liabilities Commodity $ — $ 304 $ 304 Interest rate 42 13 55 Total current derivative liabilities 42 317 359 Noncurrent Liabilities Commodity — 165 165 Interest rate 295 49 344 Total noncurrent derivative liabilities 295 214 509 Total derivative liabilities $ 337 $ 531 $ 868
Schedule of Cash Flow Hedging Instruments, Statements of Financial Performance and Financial Position, Location	The following tables present the gains and losses on Dominion Energy’s derivatives, as well as where the associated activity is presented in its Consolidated Balance Sheets and Statements of Income. Derivatives in cash flow hedging relationships Amount of Gain (Loss) Recognized in AOCI on Derivatives (1) Amount of Gain (Loss) Reclassified From AOCI to Income Increase (Decrease) in Derivatives Subject to Regulatory Treatment (2) (millions) Three Months Ended September 30, 2022 Derivative type and location of gains (losses): Interest rate (3) $ 14 $ (16 ) $ 182 Total $ 14 $ (16 ) $ 182 Three Months Ended September 30, 2021 Derivative type and location of gains (losses): Interest rate (3) $ (2 ) $ (14 ) $ 9 Total $ (2 ) $ (14 ) $ 9 Nine Months Ended September 30, 2022 Derivative type and location of gains (losses): Interest rate (3) $ 86 $ (44 ) $ 815 Total $ 86 $ (44 ) $ 815 Nine Months Ended September 30, 2021 Derivative type and location of gains (losses): Interest rate (3) $ 29 $ (46 ) $ 198 Commodity (4) — (1 ) — Total $ 29 $ (47 ) $ 198 (1) Amounts deferred into AOCI have no associated effect in Dominion Energy’s 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 Dominion Energy’s Consolidated Statements of Income. (3) Amounts recorded in Dominion Energy’s Consolidated Statement of Income are classified in interest and related charges. (4) Amounts recorded in Dominion Energy’s Consolidated Statement of Income are classified in purchased gas.
Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance	Derivatives not designated as hedging instruments Amount of Gain (Loss) Recognized in Income on Derivatives (1)(2) Three Months Ended Nine Months Ended September 30, September 30, 2022 2021 2022 2021 (millions) Derivative type and location of gains (losses): Commodity: Operating revenue $ (306 ) $ (334 ) $ (908 ) $ (521 ) Purchased gas 1 25 6 32 Electric fuel and other energy-related purchases 205 44 401 7 Interest rate: Interest and related charges 92 (20 ) 628 142 Total $ (8 ) $ (285 ) $ 127 $ (340 ) (1) Includes derivative activity amortized out of regulatory assets/liabilities. Amounts deferred into regulatory assets/liabilities have no associated effect in Dominion Energy’s 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.
Virginia Electric and Power Company
Offsetting Assets	The tables below present Virginia Power’s 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: September 30, 2022 December 31, 2021 Gross Amounts Not Offset in the Consolidated Balance Sheet Gross Amounts Not Offset in the Consolidated Balance Sheet Gross Assets Presented in the Consolidated Balance Sheet (1) Financial Instruments Cash Collateral Received Net Amounts Gross Assets Presented in the Consolidated Balance Sheet (1) Financial Instruments Cash Collateral Received Net Amounts (millions) Commodity contracts: Over-the-counter $ 297 $ 7 $ — $ 290 $ 110 $ 8 $ — $ 102 Exchange — — — — 7 7 — — Interest rate contracts: Over-the-counter 596 163 — 433 146 20 — 126 Foreign currency exchange rate contracts: Over-the-counter 6 6 — — 8 — — 8 Total derivatives, subject to a master netting or similar arrangement $ 899 $ 176 $ — $ 723 $ 271 $ 35 $ — $ 236 (1) Excludes $62
Offsetting Liabilities	September 30, 2022 December 31, 2021 Gross Amounts Not Offset in the Consolidated Balance Sheet Gross Amounts Not Offset in the Consolidated Balance Sheet Gross Liabilities Presented in the Consolidated Balance Sheet (1) Financial Instruments Cash Collateral Paid Net Amounts Gross Liabilities Presented in the Consolidated Balance Sheet (1) Financial Instruments Cash Collateral Paid Net Amounts (millions) Commodity contracts: Over-the-counter $ 233 $ 13 $ 121 $ 99 $ 84 $ 8 $ 54 $ 22 Exchange 268 — 268 — 43 7 36 — Interest rate contracts: Over-the-counter 27 10 — 17 337 20 — 317 Foreign currency exchange rate contracts: Over-the-counter 387 153 — 234 — — — — Total derivatives, subject to a master netting or similar arrangement $ 915 $ 176 $ 389 $ 350 $ 464 $ 35 $ 90 $ 339 (1) Excludes $2
Schedule of Volume of Derivative Activity	The following table presents the volume of Virginia Power’s derivative activity at September 30, 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 its long and short positions. Current Noncurrent Natural Gas (bcf): Fixed price 34 7 Basis (1) 145 428 Electricity (MWh in millions): Fixed price 8 5 FTRs 72 — Oil (Gal in millions) 6 — Interest rate (2) $ 250 $ 3,050 Foreign currency exchange rate (2) Danish Krone 468 kr. 4,167 kr. Euro €351 €2,651 (1) Includes options. (2) 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 Virginia Power’s Consolidated Balance Sheet at September 30, 2022: AOCI After-Tax Amounts Expected to be Reclassified to Earnings During the Next 12 Months After-Tax Maximum Term (millions) Interest rate $ 13 $ (1 ) 387 months Total $ 13 $ (1 )
Fair Value of Derivatives	The following table presents the fair values of Virginia Power’s derivatives and where they are presented in its Consolidated Balance Sheets: Fair Value – Derivatives under Hedge Accounting Fair Value – Derivatives not under Hedge Accounting Total Fair Value (millions) September 30, 2022 ASSETS Current Assets Commodity $ — $ 357 $ 357 Foreign currency exchange rate — 6 6 Total current derivative assets — 363 363 Noncurrent Assets Commodity — 2 2 Interest rate 596 — 596 Total noncurrent derivative assets (1) 596 2 598 Total derivative assets $ 596 $ 365 $ 961 LIABILITIES Current Liabilities Commodity $ — $ 392 $ 392 Foreign currency exchange rate — 50 50 Total current derivative liabilities — 442 442 Noncurrent Liabilities Commodity — 111 111 Interest rate 27 — 27 Foreign currency exchange rate — 337 337 Total noncurrent derivative liabilities (2) 27 448 475 Total derivative liabilities $ 27 $ 890 $ 917 December 31, 2021 ASSETS Current Assets Commodity $ — $ 74 $ 74 Interest rate 1 — 1 Foreign currency exchange rate — 1 1 Total current derivative assets 1 75 76 Noncurrent Assets Commodity — 72 72 Interest rate 145 — 145 Foreign currency exchange rate — 7 7 Total noncurrent derivative assets (1) 145 79 224 Total derivative assets $ 146 $ 154 $ 300 LIABILITIES Current Liabilities Commodity $ — $ 92 $ 92 Interest rate 42 — 42 Total current derivative liabilities 42 92 134 Noncurrent Liabilities Commodity — 41 41 Interest rate 295 — 295 Total noncurrent derivative liabilities (2) 295 41 336 Total derivative liabilities $ 337 $ 133 $ 470 ( 1 ) Noncurrent derivative assets are presented in other deferred charges and other assets in Virginia Power’s Consolidated Balance Sheets. ( 2 ) Noncurrent derivative liabilities are presented in other deferred credits and other liabilities in Virginia Power’s 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 Virginia Power’s derivatives, as well as where the associated activity is presented in its Consolidated Balance Sheets and Statements of Income: Derivatives in cash flow hedging relationships Amount of Gain (Loss) Recognized in AOCI on Derivatives (1) Amount of Gain (Loss) Reclassified From AOCI to Income Increase (Decrease) in Derivatives Subject to Regulatory Treatment (2) (millions) Three Months Ended September 30, 2022 Derivative type and location of gains (losses): Interest rate (3) $ 18 $ (1 ) $ 182 Total $ 18 $ (1 ) $ 182 Three Months Ended September 30, 2021 Derivative type and location of gains (losses): Interest rate (3) $ (2 ) $ (1 ) $ 8 Total $ (2 ) $ (1 ) $ 8 Nine Months Ended September 30, 2022 Derivative type and location of gains (losses): Interest rate (3) $ 77 $ (2 ) $ 814 Total $ 77 $ (2 ) $ 814 Nine Months Ended September 30, 2021 Derivative type and location of gains (losses): Interest rate (3) $ 24 $ (2 ) $ 194 Total $ 24 $ (2 ) $ 194 (1) Amounts deferred into AOCI have no associated effect in Virginia Power’s 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 Virginia Power’s Consolidated Statements of Income. (3)
Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance	Derivatives not designated as hedging instruments Amount of Gain (Loss) Recognized in Income on Derivatives (1)(2) Three Months Ended Nine Months Ended September 30, September 30, 2022 2021 2022 2021 (millions) Derivative type and location of gains (losses): Commodity: Operating Revenue $ (108 ) $ (19 ) $ (237 ) $ (25 ) Electric fuel and other energy-related purchases 166 42 348 5 Total $ 58 $ 23 $ 111 $ (20 ) (1) Includes derivative activity amortized out of regulatory assets/liabilities. Amounts deferred into regulatory assets/liabilities have no associated effect in Virginia Power’s Consolidated Statements of Income.

Investments (Tables)

Investments (Tables)	9 Months Ended
	Sep. 30, 2022
Equity and Debt Securities and Cash Equivalents and Cost Method Investments in Decommissioning Trust Funds	Dominion Energy’s decommissioning trust funds are summarized below: Amortized Cost Total Unrealized Gains Total Unrealized Losses Allowance for Credit Losses Fair Value (millions) September 30, 2022 Equity securities: (1) U.S. $ 1,375 $ 2,209 $ (37 ) $ 3,547 Fixed income securities: (2) Corporate debt instruments 649 — (86 ) $ — 563 Government securities 1,291 1 (101 ) — 1,191 Common/collective trust funds 62 — — — 62 Insurance contracts 214 — — 214 Cash equivalents and other (3) 13 — — — 13 Total $ 3,604 $ 2,210 $ (224 ) (4) $ — $ 5,590 December 31, 2021 Equity securities: (1) U.S. $ 1,567 $ 3,734 $ (13 ) $ 5,288 Fixed income securities: (2) Corporate debt instruments 854 32 (5 ) $ — 881 Government securities 1,382 43 (7 ) — 1,418 Common/collective trust funds 168 4 — — 172 Insurance contracts 255 — — 255 Cash equivalents and other (3) 9 2 (75 ) — (64 ) Total $ 4,235 $ 3,815 $ (100 ) (4) $ — $ 7,950 (1) Unrealized gains and losses on equity securities are included in other income and the nuclear decommissioning trust regulatory liability. (2) Unrealized gains and losses on fixed income securities are included in AOCI and the nuclear decommissioning trust regulatory liability. Changes in allowance for credit losses are included in other income. (3) Includes pending sales of securities of $13 million at September 30, 2022, and pending purchases of securities of $35 million at December 31, 2021. (4) The fair value of securities in an unrealized loss position was $1.9 billion and $883 million at September 30, 2022 and December 31, 2021, respectively.
Unrealized Gain Loss on Equity	The portion of unrealized gains and losses that relates to equity securities held within Dominion Energy’s nuclear decommissioning trusts is summarized below: Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 (millions) Net gains (losses) recognized during the period $ (205 ) $ (15 ) $ (1,123 ) $ 616 Less: Net (gains) losses recognized during the period on securities sold during the period (2 ) (11 ) 3 (323 ) Unrealized gains (losses) recognized during the period on securities still held at period end (1) $ (207 ) $ (26 ) $ (1,120 ) $ 293 (1) Included in other income and the nuclear decommissioning trust regulatory liability.
Investments Classified by Contractual Maturity Date	The fair value of Dominion Energy’s fixed income securities with readily determinable fair values held in nuclear decommissioning trust funds at September 30, 2022 by contractual maturity is as follows: Amount (millions) Due in one year or less $ 122 Due after one year through five years 512 Due after five years through ten years 453 Due after ten years 729 Total $ 1,816
Marketable Securities	Presented below is selected information regarding Dominion Energy’s equity and fixed income securities with readily determinable fair values held in nuclear decommissioning trust funds. Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 (millions) Proceeds from sales $ 605 $ 614 $ 2,686 $ 3,324 Realized gains (1) 17 25 132 405 Realized losses (1) 50 7 247 81 (1) Includes realized gains and losses recorded to the nuclear decommissioning trust regulatory liability.
Virginia Electric and Power Company
Equity and Debt Securities and Cash Equivalents and Cost Method Investments in Decommissioning Trust Funds	Virginia Power’s decommissioning trust funds are summarized below: Amortized Cost Total Unrealized Gains Total Unrealized Losses Allowance for Credit Losses Fair Value (millions) September 30, 2022 Equity securities: (1) U.S. $ 856 $ 1,151 $ (32 ) $ 1,975 Fixed income securities: (2) Corporate debt instruments 434 — (62 ) $ — 372 Government securities 654 — (48 ) — 606 Common/collective trust funds 45 — — — 45 Cash equivalents and other (3) 6 — — — 6 Total $ 1,995 $ 1,151 $ (142 ) (4) $ — $ 3,004 December 31, 2021 Equity securities: (1) U.S. $ 841 $ 1,720 $ (11 ) $ 2,550 Fixed income securities: (2) Corporate debt instruments 517 17 (3 ) $ — 531 Government securities 584 16 (2 ) — 598 Common/collective trust funds 53 — — — 53 Cash equivalents and other (3) 2 — — — 2 Total $ 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. (2) Unrealized gains and losses on fixed income securities are included in AOCI and the nuclear decommissioning trust regulatory liability . (3) Includes pending sales of securities of $6 million and $5 million at September 30, 2022 and December 31, 2021, respectively. (4) The fair value of securities in an unrealized loss position was $1.1 billion and $425 million
Unrealized Gain Loss on Equity	The portion of unrealized gains and losses that relates to equity securities held within Virginia Power’s nuclear decommissioning trusts is summarized below: Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 (millions) Net gains (losses) recognized during the period $ (118 ) $ 6 $ (581 ) $ 319 Less: Net (gains) losses recognized during the period on securities sold during the period (4 ) (9 ) (8 ) (182 ) Unrealized gains (losses) recognized during the period on securities still held at period end (1) $ (122 ) $ (3 ) $ (589 ) $ 137 (1) Included in other income and the nuclear decommissioning trust regulatory liability.
Investments Classified by Contractual Maturity Date	The fair value of Virginia Power’s fixed income securities with readily determinable fair values held in nuclear decommissioning trust funds at September 30, 2022 by contractual maturity is as follows: Amount (millions) Due in one year or less $ 64 Due after one year through five years 277 Due after five years through ten years 301 Due after ten years 381 Total $ 1,023
Marketable Securities	Presented below is selected information regarding Virginia Power’s equity and fixed income securities with readily determinable fair values held in nuclear decommissioning trust funds. Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 (millions) Proceeds from sales $ 425 $ 216 $ 1,289 $ 1,465 Realized gains (1) 14 17 40 213 Realized losses (1) 33 2 85 28 (1) Includes realized gains and losses recorded to the nuclear decommissioning trust regulatory liability.

Property Plant And Equipment (T

Property Plant And Equipment (Tables)	9 Months Ended
	Sep. 30, 2022
Virginia Electric and Power Company
Schedule of Business Acquisitions, by Acquisition	The following table presents acquisitions by Virginia Power of non-jurisdictional solar projects. Virginia Power has claimed or expects to claim federal investment tax credits on the projects. Project Name Date Agreement Entered Date Agreement Closed Project Location Project Cost (millions) (1) Date of Commercial Operations MW Capacity Pumpkinseed May 2020 May 2020 Virginia $ 138 September 2022 60 Bookers Mill February 2021 June 2021 Virginia 225 Expected 2023 127 (1) Includes acquisition cost
Dominion Energy
Schedule of Business Acquisitions, by Acquisition	The following table presents acquisitions by Dominion Energy of solar projects in addition to the Virginia Power projects presented above. Dominion Energy expects to claim federal investment tax credits on the projects. Project Name Date Agreement Entered Date Agreement Closed Project Location Project Cost (millions) (1) Date of Commercial Operations MW Capacity Madison July 2020 July 2020 Virginia $ 130 Expected 2023 62 Atlanta Farms March 2022 May 2022 Ohio 390 Expected split (2) 200 Hardin II August 2020 Expected 2022 Ohio 290 Expected 2023 150 (1) Includes acquisition cost. (2) Expected to be split between 2023 and 2024

Regulatory Assets and Liabili_2

Regulatory Assets and Liabilities (Tables)	9 Months Ended
	Sep. 30, 2022
Schedule of Regulatory Assets and Liabilities	Regulatory assets and liabilities include the following: September 30, 2022 December 31, 2021 (millions) Dominion Energy Regulatory assets: Deferred cost of fuel used in electric generation (1) $ 571 $ 251 Deferred project costs and DSM programs for gas utilities (2) 68 53 Unrecovered gas costs (3) 184 191 Deferred rider costs for Virginia electric utility (4) 149 72 Ash pond and landfill closure costs (5) 62 193 Deferred nuclear refueling outage costs (6) 55 79 NND Project costs (7) 138 138 Deferred early plant retirement charges (8) 226 226 Derivatives (9) 375 112 Other 236 177 Regulatory assets-current 2,064 1,492 Unrecognized pension and other postretirement benefit costs (10) 549 548 Deferred rider costs for Virginia electric utility (4) 312 489 Deferred project costs for gas utilities (2) 693 675 Interest rate hedges (11) 170 899 AROs and related funding (12) 409 329 NND Project costs (7) 2,122 2,226 Ash pond and landfill closure costs (5) 2,245 2,223 Deferred cost of fuel used in electric generation (1) 1,318 409 Deferred early plant retirement charges (8) 56 226 Derivatives (9) 562 35 Other 525 584 Regulatory assets-noncurrent 8,961 8,643 Total regulatory assets $ 11,025 $ 10,135 Regulatory liabilities: Provision for future cost of removal and AROs (13) 181 181 Reserve for refunds and rate credits to electric utility customers (14) 129 420 Income taxes refundable through future rates (15) 147 153 Monetization of guarantee settlement (16) 67 67 Derivatives (9) 325 69 Other 170 96 Regulatory liabilities-current 1,019 986 Income taxes refundable through future rates (15) 4,096 4,260 Provision for future cost of removal and AROs (13) 2,409 2,331 Nuclear decommissioning trust (17) 1,532 2,158 Monetization of guarantee settlement (16) 719 831 Interest rate hedges (11) 202 67 Reserve for refunds and rate credits to electric utility customers (14) 358 448 Unrecognized pension and other postretirement benefit costs (10) 177 200 Overrecovered other postretirement benefit costs (18) 131 105 Derivatives (9) 227 169 Other 191 144 Regulatory liabilities-noncurrent 10,042 10,713 Total regulatory liabilities $ 11,061 $ 11,699 (1) Reflects deferred fuel expenses for the Virginia, North Carolina and South Carolina jurisdictions of Dominion Energy’s electric generation operations. Reflects a $66 million reduction recorded in the first quarter of 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 ) Primarily ( 3 ) Reflects unrecovered gas costs at regulated gas operations, which are recovered through filings with the applicable regulatory authority. ( 4 ) 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. ( 5 ) Primarily reflects legislation enacted in Virginia in 2019, 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. See Note 13 for additional information. (6) Legislation enacted in Virginia in April 2014 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. ( 7 ) 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. See Note 3 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021 for additional information. ( 8 ) 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 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021 for additional information. ( 9 ) 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. ( 1 0 ) 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. ( 1 1 ) 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 as of September 30, 2022. ( 1 2 ) 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 . (1 3 ) Rates charged to customers by Dominion Energy’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. (1 4 ) 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. See Notes 3 and 13 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021 for additional information. 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 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021 for additional information. ( 1 5 ) 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. ( 1 6 ) Reflects 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. See Note 3 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021 for additional information. ( 17 ) 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 Dominion Energy’s utility nuclear generation stations, in excess of the related AROs. ( 18 ) Reflects a regulatory liability for the collection of postretirement benefit costs allowed in rates in excess of expense incurred.
Virginia Power
Schedule of Regulatory Assets and Liabilities	September 30, 2022 December 31, 2021 (millions) Virginia Power Regulatory assets: Deferred cost of fuel used in electric generation (1) $ 205 $ 131 Deferred rider costs (2) 149 72 Ash pond and landfill closure costs (3) 62 193 Deferred nuclear refueling outage costs (4) 55 79 Deferred early plant retirement charges (5) 226 226 Derivatives (6) 369 105 Other 70 44 Regulatory assets-current 1,136 850 Deferred rider costs (2) 312 489 Interest rate hedges (7) — 604 Ash pond and landfill closure costs (3) 2,242 2,223 Deferred cost of fuel used in electric generation (1) 1,318 409 Deferred early plant retirement charges (5) 56 226 Derivatives (6) 453 34 Other 137 145 Regulatory assets-noncurrent 4,518 4,130 Total regulatory assets $ 5,654 $ 4,980 Regulatory liabilities: Provision for future cost of removal (8) 154 154 Reserve for refunds to Virginia electric customers (9) 27 306 Income taxes refundable through future rates (10) 63 63 Derivatives (6) 265 51 Other 139 73 Regulatory liabilities-current 648 647 Income taxes refundable through future rates (10) 2,280 2,335 Nuclear decommissioning trust (11) 1,532 2,158 Provision for future cost of removal (8) 1,082 1,043 Interest rate hedges (7) 202 — Reserve for refunds to Virginia electric customers (9) 6 25 Other 167 179 Regulatory liabilities-noncurrent 5,269 5,740 Total regulatory liabilities $ 5,917 $ 6,387 (1) Reflects deferred fuel expenses for the Virginia and North Carolina jurisdictions of Virginia Power’s generation operations. 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 enacted in Virginia in 2019, 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. See Note 13 for additional information. (4) ( 5 ) 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 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021 for additional information. ( 6 ) 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. ( 7 ) 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 24 years as of September 30, 2022. ( 8 ) Rates charged to customers by 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. ( 9 ) Reflects amounts to be refunded to jurisdictional retail electric customers in Virginia associated with the settlement of the 2021 Triennial Review. See Note 13 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021 for additional information. ( 1 0 ) Amounts recorded to pass the effect of reduced income taxes from the 2017 Tax Reform Act to customers in future periods, which will 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. (1 1 ) 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) for the future decommissioning of Virginia Power’s utility nuclear generation stations, in excess of the related AROs.

Regulatory Matters (Tables)

Regulatory Matters (Tables) - Virginia Electric and Power Company	9 Months Ended
	Sep. 30, 2022
Public Utilities General Disclosures [Line Items]
Significant Riders Associated With Virginia Power Projects	Developments for significant riders associated with various Virginia Power projects are as follows: Rider Name Application Date Approval Date Rate Year Beginning Total Revenue Requirement (millions) Increase (Decrease) Over Previous Year (millions) Rider B June 2022 Pending April 2023 $ 34 $ 18 Rider B June 2022 Pending 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 GT August 2021 May 2022 June 2022 56 N/A Rider GT August 2022 Pending June 2023 16 (40 ) Rider OSW November 2021 August 2022 (3) September 2022 79 N/A Rider OSW November 2022 Pending September 2023 271 192 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 RPS December 2021 June 2022 September 2022 140 127 Rider SNA ( 5) October 2021 July 2022 September 2022 107 N/A Rider SNA ( 5) October 2022 Pending September 2023 50 (57 ) Rider T1 (6) May 2022 July 2022 September 2022 706 (168 ) Rider U ( 7) June 2021 March 2022 April 2022 95 15 Rider U ( 8) 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 ( 9) December 2021 August 2022 September 2022 91 17 (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. (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. See additional discussion below. (5) 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. (6) Consists of $482 million for the transmission component of Virginia Power’s base rates and $224 million for Rider T1. (7) Consists of $ 60 35 (8) As amended in June 2022, application consists of $74 million for previously approved phases of Rider U. (9) 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%.
Summary of Significant Virginia Power Electric Transmission Projects Applied	Description and Location of Project Application Date Approval Date Type of Line Miles of Lines Cost Estimate (millions) Elmont-Ladysmith rebuild and related projects in the Counties of Hanover and Caroline, Virginia April 2021 April 2022 500 kV 26 $ 95 Rebuild transmission lines and related projects in the City of Staunton and County of Augusta, Virginia November 2021 August 2022 230 kV 21 45 Build new Dulles Towne Center substation and line loop in the County of Loudoun, Virginia December 2021 July 2022 230 kV 1 105 Nimbus line loop and substation and new 230 kV line in the County of Loudon, Virginia February 2022 October 2022 230 kV 1 40 Partial rebuild of Bristers-Ox 115 kV line in Fauquier and Prince William Counties, Virginia August 2022 Pending 115 kV 15 40 Construct new switching station, substations, transmission lines and related projects in Lunenberg and Mecklenburg Counties, Virginia October 2022 Pending 230 kV 18 230 Construct new switching station, substation, transmission lines and related projects in Charlotte, Halifax and Mecklenburg Counties, Virginia October 2022 Pending 230 kV 26 215 Construct new switching stations, substation, transmission lines and related projects in Loudoun County, Virginia October 2022 Pending 500/230 kV 4 720

Significant Financing Transac_2

Significant Financing Transactions (Tables)	9 Months Ended
	Sep. 30, 2022
Debt Instrument [Line Items]
Schedule of Line of Credit Facilities	At September 30, 2022, Dominion Energy’s commercial paper and letters of credit outstanding, as well as its capacity available under the credit facility, were as follows: Facility Limit Outstanding Commercial Paper Outstanding Letters of Credit Facility Capacity Available (millions) Joint revolving credit facility ( 1) $ 6,000 $ 2,600 $ 251 $ 3,149 (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.
Virginia Electric and Power Company
Debt Instrument [Line Items]
Schedule of Line of Credit Facilities	At September 30, 2022, 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 was as follows: Facility Limit ( 1) Outstanding Commercial Paper Outstanding Letters of Credit (millions) Joint revolving credit facility ( 1) $ 6,000 $ 1,009 $ 180 (1) 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 September 30, 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.

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2022
Commitments And Contingencies Disclosure [Abstract]
Schedule of Subsidiary Guarantees	At September 30, 2022, Dominion Energy had issued the following subsidiary guarantees: Maximum Exposure (millions) Commodity transactions (1) $ 2,514 Nuclear obligations (2) 243 Solar (3) 303 Other (4) 1,268 Total (5)(6) $ 4,328 (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. (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 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021 . (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

Related-Party Transactions (Tab

Related-Party Transactions (Tables)	9 Months Ended
	Sep. 30, 2022
Virginia Electric and Power Company
Schedule of Related Party Transactions	Presented below are Virginia Power’s significant transactions with DES and other affiliates: Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 (millions) Commodity purchases from affiliates $ 515 $ 219 $ 1,099 $ 526 Services provided by affiliates (1) 125 116 378 363 Services provided to affiliates 4 6 13 15 (1) Includes capitalized expenditures of $44 million and $39 million for the three months ended September 30, 2022 and 2021, respectively, and $122 million and $121 million for the nine months ended September 30, 2022 and 2021, respectively.

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	9 Months Ended
	Sep. 30, 2022
Compensation And Retirement Disclosure [Abstract]
Net Periodic Benefit Cost (Credit)	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. The non-service cost components of net periodic benefit (credit) cost are reflected in other income (expense) in Dominion Energy’s Consolidated Statements of Income. The components of Dominion Energy’s provision for net periodic benefit cost (credit) are as follows: Pension Benefits Other Postretirement Benefits 2022 2021 2022 2021 (millions) Three Months Ended September 30, Service cost $ 35 $ 43 $ 5 $ 6 Interest cost 83 80 11 11 Expected return on plan assets (221 ) (209 ) (47 ) (43 ) Amortization of prior service cost (credit) — — (10 ) (11 ) Amortization of net actuarial loss 39 48 — 1 Curtailment (1) — — (8 ) — Net periodic benefit (credit) cost $ (64 ) $ (38 ) $ (49 ) $ (36 ) Nine Months Ended September 30, Service cost $ 106 $ 127 $ 16 $ 18 Interest cost 250 238 34 35 Expected return on plan assets (667 ) (625 ) (143 ) (130 ) Amortization of prior service (credit) cost — — (29 ) (32 ) Amortization of net actuarial loss 119 145 (1 ) 3 Settlements and curtailment (1) — 5 (8 ) — Net periodic benefit (credit) cost $ (192 ) $ (110 ) $ (131 ) $ (106 ) (1) 2022 amounts relate primarily to Dominion Energy’s sale of Hope. 2021 amounts relate primarily to the Dominion Energy executive nonqualified pension plan.

Operating Segments (Tables)

Operating Segments (Tables)	9 Months Ended
	Sep. 30, 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 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 Gas Distribution Regulated gas distribution and storage (2) 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 Assets Nonregulated electric generation fleet (3) X Noncontrolling interest in Cove Point X (1) I ncludes Virginia Power’s non-jurisdictional generation operations. (2) Includes renewable natural gas operations as well as Wexpro’s gas development and production 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: Dominion Energy Virginia Gas Distribution Dominion Energy South Carolina Contracted Assets Corporate and Other Adjustments & Eliminations Consolidated Total (millions) Three Months Ended September 30, 2022 Total revenue from external customers $ 2,871 $ 436 $ 915 $ 239 $ (75 ) $ — $ 4,386 Intersegment revenue (4 ) 1 2 5 224 (228 ) — Total operating revenue 2,867 437 917 244 149 (228 ) 4,386 Net loss from discontinued operations — — — — (3 ) — (3 ) Net income (loss) attributable to Dominion Energy 617 67 175 121 (202 ) — 778 Three Months Ended September 30, 2021 Total revenue from external customers $ 2,333 $ 372 $ 799 $ 265 $ (612 ) $ 18 $ 3,175 Intersegment revenue (3 ) 1 1 17 221 (236 ) 1 Total operating revenue 2,330 373 800 282 (391 ) (218 ) 3,176 Net income from discontinued operations — — — — 65 — 65 Net income (loss) attributable to Dominion Energy 599 69 151 119 (284 ) — 654 Nine Months Ended September 30, 2022 Total revenue from external customers $ 7,218 $ 2,230 $ 2,525 $ 645 $ (357 ) $ — $ 12,261 Intersegment revenue (10 ) 2 6 15 686 (699 ) — Total operating revenue 7,208 2,232 2,531 660 329 (699 ) 12,261 Net income from discontinued operations — — — — 15 — 15 Net income (loss) attributable to Dominion Energy 1,575 486 408 242 (1,675 ) — 1,036 Nine Months Ended September 30, 2021 Total revenue from external customers $ 6,072 $ 1,800 $ 2,230 $ 790 $ (857 ) $ 46 $ 10,081 Intersegment revenue (10 ) 4 5 55 686 (737 ) 3 Total operating revenue 6,062 1,804 2,235 845 (171 ) (691 ) 10,084 Net income from discontinued operations — — — — 119 — 119 Net income (loss) attributable to Dominion Energy 1,464 415 337 373 (642 ) — 1,947
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: Dominion Energy Virginia Corporate and Other Consolidated Total (millions) Three Months Ended September 30, 2022 Operating revenue $ 2,865 $ 10 $ 2,875 Net income (loss) 618 (47 ) 571 Three Months Ended September 30, 2021 Operating revenue $ 2,326 $ (350 ) $ 1,976 Net income (loss) 601 (45 ) 556 Nine Months Ended September 30, 2022 Operating revenue $ 7,200 $ 17 $ 7,217 Net income (loss) 1,576 (601 ) 975 Nine Months Ended September 30, 2021 Operating revenue $ 6,048 $ (501 ) $ 5,547 Net income (loss) 1,462 (118 ) 1,344

Significant Accounting Polici_4

Significant Accounting Policies (Narrative) (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended	12 Months Ended
	Sep. 30, 2022	Jun. 30, 2021	Sep. 30, 2022	Dec. 31, 2022
Other Operations and Maintenance
Significant Accounting Policies [Line Items]
Asset retirement obligation, liabilities incurred		$ 44
Asset retirement obligation, liabilities incurred after tax		$ 35
Change in Depreciation Rates from New Depreciation Study
Significant Accounting Policies [Line Items]
Increase in EPS	$ 0.01		$ 0.04
Change in Depreciation Rates from New Depreciation Study | Forecast
Significant Accounting Policies [Line Items]
Increase in EPS				$ 0.05
Virginia Electric and Power Company | Coal And Oil Fired Generating Units
Significant Accounting Policies [Line Items]
Charges recorded with dismantling	$ 18		$ 60
Charges recorded with dismantling after tax	14		45
Virginia Electric and Power Company | Change in Depreciation Rates from New Depreciation Study
Significant Accounting Policies [Line Items]
Increase (decrease) in depreciation expense	(15)		(45)
Increase (decrease) in depreciation expense, after tax	$ (11)		$ (33)
Virginia Electric and Power Company | Change in Depreciation Rates from New Depreciation Study | Forecast
Significant Accounting Policies [Line Items]
Increase (decrease) in depreciation expense				$ (60)
Increase (decrease) in depreciation expense, after tax				$ (45)
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%		33%

Significant Accounting Polici_5

Significant Accounting Policies (Reconciliation of Total Cash, Restricted Cash and Equivalents) (Detail) - USD ($) $ in Millions		Sep. 30, 2022	Dec. 31, 2021		Sep. 30, 2021	Dec. 31, 2020
Cash Cash Equivalents And Restricted Cash [Line Items]
Cash and cash equivalents	[1]	$ 163	$ 283		$ 195	$ 179
Cash and cash equivalents		163	283	[2]
Restricted cash and equivalents	[3],[4]	177	125		72	68
Restricted cash and equivalents		0	0		22	3
Cash, restricted cash and equivalents shown in the Consolidated Statements of Cash Flows		340	408		267	247
Virginia Electric and Power Company
Cash Cash Equivalents And Restricted Cash [Line Items]
Cash and cash equivalents		18	26	[5]	38	35
Restricted cash and equivalents	[4]	2	0		1	0
Cash, restricted cash and equivalents shown in the Consolidated Statements of Cash Flows		$ 20	$ 26		$ 39	$ 35
[1]At September 30, 2021 and December 31, 2020, Dominion Energy had $15 million and $7 million of cash and cash equivalents included in current assets held for sale, respectively. No amounts were included in current assets held for sale at September 30, 2022 and December 31, 2021.[2]Dominion Energy’s Consolidated Balance Sheet at December 31, 2021 has been derived from the audited Consolidated Balance Sheet at that date.[3] At September 30, 2021 and December 31, 2020, Dominion Energy had $22 million and $3 million of restricted cash and equivalents included in current assets held for sale, respectively. No amounts were included in current assets held for sale at September 30, 2022 and December 31, 2021.

Significant Accounting Polici_6

Significant Accounting Policies (Reconciliation of Total Cash, Restricted Cash and Equivalents) (Parenthetical) (Detail) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021		Sep. 30, 2021	Dec. 31, 2020
Cash Cash Equivalents And Restricted Cash [Line Items]
Cash and cash equivalents	$ 163	$ 283	[1]
Restricted cash and equivalents	$ 0	$ 0		$ 22	$ 3
Restricted Cash Equivalents, Current, Statement of Financial Position [Extensible Enumeration]	Current assets held for sale	Current assets held for sale		Current assets held for sale	Current assets held for sale
Current Assets Held for Sale
Cash Cash Equivalents And Restricted Cash [Line Items]
Cash and cash equivalents	$ 0	$ 0		$ 15	$ 7
[1]Dominion Energy’s Consolidated Balance Sheet at December 31, 2021 has been derived from the audited Consolidated Balance Sheet at that date.

Significant Accounting Polici_7

Significant Accounting Policies (Schedule of Supplemental Cash Flow Information) (Detail) - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021
Significant noncash investing and financing activities:(1)
Accrued capital expenditures	[1]	$ 745	$ 374
Leases	[2]	129	75
Virginia Electric and Power Company
Significant noncash investing and financing activities:(1)
Accrued capital expenditures		454	238
Leases	[3]	$ 113	$ 59
[1]See Note 10 for noncash investing activities related to the acquisition of a noncontrolling interest in Dominion Privatization and Notes 16 and 17 for noncash financing activities related to the remarketing of Series A Preferred Stock and the issuance of common stock and transfer of property associated with the settlement of litigation.[2] See Note 10 for noncash investing activities related to the acquisition of a noncontrolling interest in Dominion Privatization and Notes 16 and 17 for noncash financing activities related to the remarketing of Series A Preferred Stock and the issuance of common stock and transfer of property associated with the settlement of litigation. Includes $20 million and $24 million of financing leases at September 30, 2022 and 2021, respectively, and $93 million and $35 million of operating leases at September 30, 2022 and 2021, respectively

Significant Accounting Polici_8

Significant Accounting Policies (Schedule of Supplemental Cash Flow Information) (Parenthetical) (Detail) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Schedule Of Supplemental Cash Flow Information [Line Items]
Financing leases	$ 29	$ 34
Operating Leases	100	41
Virginia Electric and Power Company
Schedule Of Supplemental Cash Flow Information [Line Items]
Financing leases	20	24
Operating Leases	$ 93	$ 35

Acquisitions and Dispositions_2

Acquisitions and Dispositions (Disposition of Gas Transmission & Storage Operations) (Narrative) (Detail) - Q-Pipe Group - Southwest Gas - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2022
Business Acquisition And Dispositions [Line Items]
Gain (loss) on held for sale		$ 27
Gain (loss) on held for sale, after tax		20
Transition Service Agreement
Business Acquisition And Dispositions [Line Items]
Operating revenue	$ 2	$ 5
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, subject to extension.

Acquisitions and Dispositions_3

Acquisitions and Dispositions (Schedule of Results of Operations of Disposal Groups Reported As Discontinued Operations) (Detail) - USD ($)		3 Months Ended		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Income tax expense (benefit) from discontinued operations		$ 0	$ (6,000,000)	$ 4,000,000	$ 5,000,000
Net income attributable to Dominion Energy		$ (3,000,000)	65,000,000	$ 15,000,000	119,000,000
Disposition of GTS Operations | Q-Pipe Group
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Operating revenue			62,000,000		188,000,000
Operating expense			24,000,000		52,000,000
Other income	[1]		26,000,000		27,000,000
Interest and related charges			7,000,000		17,000,000
Income before income taxes	[2]		57,000,000		146,000,000
Income tax expense (benefit) from discontinued operations			12,000,000		29,000,000
Net income attributable to Dominion Energy			$ 45,000,000		$ 117,000,000
[1] Includes a $25 million benefit associated with the termination of the Q-Pipe Transaction in the third quarter of 2021.

Acquisitions and Dispositions_4

Acquisitions and Dispositions (Schedule of Results of Operations of Disposal Groups Reported As Discontinued Operations) (Parenthetical) (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Income tax expense (benefit) from discontinued operations	$ 0	$ (6,000,000)	$ 4,000,000	$ 5,000,000
GT&S Transaction
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Income tax expense (benefit) from discontinued operations		(18,000,000)
Disposition of GTS Operations | Q-Pipe Group
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Benefit associated with the termination		25,000,000
Income tax expense (benefit) from discontinued operations		$ 12,000,000		$ 29,000,000

Acquisitions and Dispositions_5

Acquisitions and Dispositions (Schedule of Capital Expenditures and Significant Noncash Items Reported As Discontinued Operations) (Detail) - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021
Significant noncash items:
Accrued capital expenditures	[1]	$ 745	$ 374
Dominion Energy Gas Holdings, LLC | Q-Pipe Group
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Capital expenditures			26
Significant noncash items:
Accrued capital expenditures			$ 2
[1]See Note 10 for noncash investing activities related to the acquisition of a noncontrolling interest in Dominion Privatization and Notes 16 and 17 for noncash financing activities related to the remarketing of Series A Preferred Stock and the issuance of common stock and transfer of property associated with the settlement of litigation.

Acquisitions and Dispositions_6

Acquisitions and Dispositions (Sale of Hope) (Narrative) (Detail) - Ullico Inc - USD ($) $ in Millions		3 Months Ended	9 Months Ended
	Feb. 02, 2022	Jun. 30, 2022	Sep. 30, 2022
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			$ 8
Goodwill write-off			110
Disposal group, recognized a gain on disposal after tax			$ 89
Deferred income tax expense		$ 90

Acquisitions and Dispositions_7

Acquisitions and Dispositions (Sale of Kewaunee) (Narrative) (Detail) - Dominion Energy Kewaunee, Inc - USD ($) $ in Millions	6 Months Ended	9 Months Ended
	Jun. 30, 2022	Sep. 30, 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

Operating Revenue (Schedule of

Operating Revenue (Schedule of Operating Revenue) (Detail) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		$ 4,655	$ 3,434	$ 12,996	$ 10,358
Other revenues	[1],[2]	(269)	(258)	(735)	(274)
Total operating revenue		4,386	3,176	12,261	10,084
Regulated Electric Sales | Residential
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		1,609	1,281	4,013	3,453
Regulated Electric Sales | Commercial
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		1,349	831	3,336	2,311
Regulated Electric Sales | Industrial
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		253	194	670	547
Regulated Electric Sales | Government and Other Retail
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		353	258	922	670
Regulated Electric Sales | Wholesale
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		66	52	181	131
Nonregulated Electric Sales
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		345	271	948	754
Regulated Gas Sales | Residential
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		154	132	1,154	950
Regulated Gas Sales | Commercial
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		83	61	462	346
Regulated Gas Sales | Other
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		62	31	158	88
Nonregulated Gas Sales
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		2	7	7	74
Regulated Gas Transportation and Storage
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		229	208	767	698
Other Regulated Revenues
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		76	47	195	187
Other Nonregulated Revenues
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers	[3]	74	61	183	149
Virginia Electric and Power Company
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		2,959	1,987	7,394	5,517
Other revenues	[1],[4]	(84)	(11)	(177)	30
Total operating revenue		2,875	1,976	7,217	5,547
Virginia Electric and Power Company | Regulated Electric Sales | Residential
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		1,238	935	3,069	2,572
Virginia Electric and Power Company | Regulated Electric Sales | Commercial
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		1,105	604	2,696	1,715
Virginia Electric and Power Company | Regulated Electric Sales | Industrial
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		134	94	347	268
Virginia Electric and Power Company | Regulated Electric Sales | Government and Other Retail
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		335	241	874	625
Virginia Electric and Power Company | Regulated Electric Sales | Wholesale
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		38	31	101	79
Virginia Electric and Power Company | Nonregulated Electric Sales
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		17	18	62	32
Virginia Electric and Power Company | Other Regulated Revenues
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		64	37	195	165
Virginia Electric and Power Company | Other Nonregulated Revenues
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers	[3],[4]	$ 28	$ 27	$ 50	$ 61
[1]Includes alternative revenue of $20 million and $3 million at Dominion Energy and $20 million and $3 million at Virginia Power for the three months ended September 30, 2022 and 2021, respectively, and $90 million and $50 million at Dominion Energy and $47 million and $41 million at Virginia Power for the nine months ended September 30, 2022 and 2021, respectively.[2]Includes revenue associated with services provided to discontinued operations of $1 million and $3 million for the three and nine months ended September 30, 2021, respectively.[3]Includes sales which are considered to be goods transferred at a point in time of $10 million and $9 million for the three months ended September 30, 2022 and 2021, respectively, and $35 million and $24 million for the nine months ended September 30, 2022 and 2021, respectively, at Dominion Energy, primarily consisting of sales of commodities related to nonregulated extraction activities and other miscellaneous products. Additionally, sales of renewable energy credits were $21 million and $16 million for the three months ended September 30, 2022 and 2021, respectively, and $32 million and $29 million for the nine months ended September 30, 2022 and 2021, respectively, at Dominion Energy and $13 million for both the three months ended September 30, 2022 and 2021 and $13 million and $22 million for the nine months ended September 30, 2022 and 2021, respectively, at Virginia Power.[4]See Note 19 for amounts attributable to affiliates.

Operating Revenue (Schedule o_2

Operating Revenue (Schedule of Operating Revenue) (Parenthetical) (Detail) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		$ 4,655	$ 3,434	$ 12,996	$ 10,358
Other revenues	[1],[2]	(269)	(258)	(735)	(274)
GT&S Transaction
Public Utilities General Disclosures [Line Items]
Revenue associated with discontinued operations			1		3
NGL Midstream | Transferred at a Point in Time
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		10	9	35	24
Renewable Energy Investment Tax Credits
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		21	16	32	29
Alternative Revenue Programs
Public Utilities General Disclosures [Line Items]
Other revenues		20	3	90	50
Virginia Electric and Power Company
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		2,959	1,987	7,394	5,517
Other revenues	[1],[3]	(84)	(11)	(177)	30
Virginia Electric and Power Company | Renewable Energy Investment Tax Credits
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		13	13	13	22
Virginia Electric and Power Company | Alternative Revenue Programs
Public Utilities General Disclosures [Line Items]
Other revenues		$ 20	$ 3	$ 47	$ 41
[1]Includes alternative revenue of $20 million and $3 million at Dominion Energy and $20 million and $3 million at Virginia Power for the three months ended September 30, 2022 and 2021, respectively, and $90 million and $50 million at Dominion Energy and $47 million and $41 million at Virginia Power for the nine months ended September 30, 2022 and 2021, respectively.[2]Includes revenue associated with services provided to discontinued operations of $1 million and $3 million for the three and nine months ended September 30, 2021, respectively.[3]See Note 19 for amounts attributable to affiliates.

Operating Revenue (Schedule o_3

Operating Revenue (Schedule of Aggregate Amount of Transaction Price Allocated To Fixed-price Performance Obligations That Unsatisfied At End of Reporting Period And Expected To be Recognized) (Detail) $ in Millions	Sep. 30, 2022 USD ($)
Revenues From Contract With Customer [Line Items]
Revenue, expected to be recognized on multi-year contracts	$ 698
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2022-10-01
Revenues From Contract With Customer [Line Items]
Revenue, expected to be recognized on multi-year contracts	$ 18
Revenue, expected to be recognized on multi-year contracts, period	3 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2023-01-01
Revenues From Contract With Customer [Line Items]
Revenue, expected to be recognized on multi-year contracts	$ 68
Revenue, expected to be recognized on multi-year contracts, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2024-01-01
Revenues From Contract With Customer [Line Items]
Revenue, expected to be recognized on multi-year contracts	$ 61
Revenue, expected to be recognized on multi-year contracts, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2025-01-01
Revenues From Contract With Customer [Line Items]
Revenue, expected to be recognized on multi-year contracts	$ 54
Revenue, expected to be recognized on multi-year contracts, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2026-01-01
Revenues From Contract With Customer [Line Items]
Revenue, expected to be recognized on multi-year contracts	$ 48
Revenue, expected to be recognized on multi-year contracts, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2027-01-01
Revenues From Contract With Customer [Line Items]
Revenue, expected to be recognized on multi-year contracts	$ 449
Revenue, expected to be recognized on multi-year contracts, period

Operating Revenue (Schedule o_4

Operating Revenue (Schedule of Aggregate Amount of Transaction Price Allocated To Fixed-price Performance Obligations That Unsatisfied At End of Reporting Period And Expected To be Recognized) (Detail1) $ in Millions	Sep. 30, 2022 USD ($)
Revenue From Contract With Customer [Abstract]
Revenue, expected to be recognized on multi-year contracts	$ 698

Operating Revenue (Narrative) (

Operating Revenue (Narrative) (Detail) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Revenues From Contract With Customer [Line Items]
Revenue recognized from contract liability balances	$ 120	$ 124
Other Current Liabilities and Other Deferred Credits and Other Liabilities
Revenues From Contract With Customer [Line Items]
Contract liability balances	159		$ 124
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	$ 43		$ 33

Income Taxes (Reconciliation of

Income Taxes (Reconciliation of Income Taxes at the U.S. Statutory Federal Income Tax Rate) (Detail)	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Effective Income Tax Computation [Line Items]
U.S. statutory rate	21%	21%
Increases (reductions) resulting from:
Recognition of taxes - sale of subsidiary stock	7.30%
State taxes, net of federal benefit	4.70%	2%
Investment tax credits	(6.40%)	(5.60%)
Production tax credits	(0.70%)	(0.50%)
Reversal of excess deferred income taxes	(6.10%)	(3.80%)
State legislative change		(1.00%)
Changes in state deferred taxes associated with assets held for sale	0.40%	(0.50%)
AFUDC - equity	(0.60%)	(0.50%)
Absence of tax on noncontrolling interest		(0.20%)
Other, net	(0.40%)	(1.10%)
Effective tax rate	19.20%	9.80%
Virginia Electric and Power Company
Effective Income Tax Computation [Line Items]
U.S. statutory rate	21%	21%
Increases (reductions) resulting from:
State taxes, net of federal benefit	4.40%	4.50%
Investment tax credits	(8.90%)	(5.80%)
Production tax credits	(1.00%)	(0.60%)
Reversal of excess deferred income taxes	(3.70%)	(2.20%)
State legislative change		(1.00%)
AFUDC - equity	(0.80%)	(0.50%)
Other, net	0.50%
Effective tax rate	11.50%	15.40%

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Taxes [Line Items]
Income tax expense (benefit) from discontinued operations	$ 0	$ (6,000,000)	$ 4,000,000	$ 5,000,000
GT&S Transaction
Income Taxes [Line Items]
Income tax expense (benefit) from discontinued operations		$ (18,000,000)
Continuing Operations
Income Taxes [Line Items]
Deferred income tax expense (benefit)			(21,000,000)
Discontinued Operations | GT&S Transaction
Income Taxes [Line Items]
Income tax benefit related to finalizing income tax returns				$ 15,000,000
Maximum
Income Taxes [Line Items]
Decrease in unrecognized tax benefits	$ 26,000,000		26,000,000
Amount that earnings could potentially increase if changes were to occur			$ 26,000,000
Hope Gas Inc
Income Taxes [Line Items]
Percentage of equity interests sold	100%		100%
Virginia Electric and Power Company | Continuing Operations
Income Taxes [Line Items]
Deferred income tax expense (benefit)			$ (16,000,000)

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		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Earnings Per Share [Abstract]
Net income from continuing operations		$ 781	$ 589	$ 1,021	$ 1,828
Preferred stock dividends (see Note 16)		(20)	(16)	(72)	(48)
Net income attributable to Dominion Energy from continuing operations – Basic		761	573	949	1,780
Dilutive effect of 2019 Equity Units	[1]			12
Net income attributable to Dominion Energy from continuing operations - Diluted		761	573	961	1,780
Net income attributable to Dominion Energy		$ (3)	$ 65	$ 15	$ 119
Average shares of common stock outstanding – Basic		832.6	808.7	820.6	807.1
Net effect of dilutive securities	[2]	0.6	1.3	12.1	0.5
Average shares of common stock outstanding – Diluted		833.2	810	832.7	807.6
EPS from continuing operations – Basic		$ 0.91	$ 0.71	$ 1.16	$ 2.20
EPS from discontinued operations – Basic			0.08	0.02	0.15
Net income attributable to Dominion Energy		0.91	0.79	1.18	2.35
EPS from continuing operations – Diluted		0.91	0.71	1.15	2.20
EPS from discontinued operations – Diluted			0.08	0.02	0.15
Net income attributable to Dominion Energy		$ 0.91	$ 0.79	$ 1.17	$ 2.35
[1] As discussed in Note 16, effective in June 2022 through its settlement 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 the three and nine months ended September 30, 2021.

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) (Schedule of Changes in AOCI Net of Tax and Reclassifications out of AOCI by Component) (Detail) - USD ($) $ in Millions		3 Months Ended				9 Months Ended
		Sep. 30, 2022		Sep. 30, 2021		Sep. 30, 2022		Sep. 30, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	[1]					$ 27,308
Interest and related charges		$ (329)		$ (407)		(550)		$ (978)
Other income (expense)		70		133		(171)		732
Income tax expense (benefit)		(124)		(35)		(243)		(200)
Net Income From Continuing Operations		781		601		1,021		1,850
Total other comprehensive income (loss)		22		24		84		101
Ending balance		28,573				28,573
Virginia Electric and Power Company
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance		16,418		15,064		15,980	[2]	14,557
Interest and related charges	[3]	(168)		(136)		(461)		(400)
Other income (expense)		3		21		(37)		93
Income before income tax expense		637		662		1,102		1,589
Income tax expense (benefit)		(66)		(106)		(127)		(245)
Total other comprehensive income (loss)		9		(3)		43		16
Ending balance		16,998		15,617		16,998		15,617
Commodity
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance								(1)
Total other comprehensive income (loss)								1
Commodity | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Purchased Gas								1
Income before income tax expense								1
Net Income From Continuing Operations								1
Interest Rate
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance		(283)		(371)		(358)		(418)
Other comprehensive income before reclassifications: gains (losses)		10		(2)		64		21
Total other comprehensive income (loss)		22		8		97		55
Ending balance		(261)		(363)		(261)		(363)
Interest Rate | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Interest and related charges		16		14		44		46
Income before income tax expense		16		14		44		46
Income tax expense (benefit)		(4)		(4)		(11)		(12)
Net Income From Continuing Operations		12		10		33		34
Total Derivative-Hedging Activities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance		(283)	[4]	(371)	[4]	(358)	[5]	(419)	[5]
Other comprehensive income before reclassifications: gains (losses)		10	[4]	(2)	[4]	64	[5]	21	[5]
Total other comprehensive income (loss)		22	[4]	8	[4]	97	[5]	56	[5]
Ending balance	[4],[5]	(261)		(363)		(261)		(363)
Total Derivative-Hedging Activities | Virginia Electric and Power Company
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance				(39)	[6]	(45)	[7]	(60)	[7]
Other comprehensive income before reclassifications: gains (losses)		13	[6]	(2)	[6]	57	[7]	18	[7]
Total other comprehensive income (loss)		13	[6]	(2)	[6]	58	[7]	19	[7]
Ending balance	[6],[7]	13		(41)		13		(41)
Total Derivative-Hedging Activities | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Purchased Gas	[5]							1
Interest and related charges		16	[4]	14	[4]	44	[5]	46	[5]
Income before income tax expense		16	[4]	14	[4]	44	[5]	47	[5]
Income tax expense (benefit)		(4)	[4]	(4)	[4]	(11)	[5]	(12)	[5]
Net Income From Continuing Operations		12	[4]	10	[4]	33	[5]	35	[5]
Total Derivative-Hedging Activities | Reclassification out of Accumulated Other Comprehensive Income | Virginia Electric and Power Company
Accumulated Other Comprehensive Income (Loss) [Line Items]
Interest and related charges		1	[6]	1	[6]	2	[7]	2	[7]
Income before income tax expense		1	[6]	1	[6]	2	[7]	2	[7]
Income tax expense (benefit)		(1)	[6]	(1)	[6]	(1)	[7]	(1)	[7]
Net Income From Continuing Operations	[7]					1		1
Investment Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance		(40)	[8]	41	[8]	37	[9]	62	[9]
Other comprehensive income before reclassifications: gains (losses)		(27)	[8]	4	[8]	(116)	[9]	(15)	[9]
Total other comprehensive income (loss)		(26)	[8]	1	[8]	(103)	[9]	(20)	[9]
Ending balance	[8],[9]	(66)		42		(66)		42
Investment Securities | Virginia Electric and Power Company
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance		(7)	[10]	6	[10]	4	[11]	8	[11]
Other comprehensive income before reclassifications: gains (losses)		(4)	[10]	0	[10]	(14)	[11]	(2)	[11]
Total other comprehensive income (loss)		(4)	[10]	(1)	[10]	(15)	[11]	(3)	[11]
Ending balance	[10],[11]	(11)		5		(11)		5
Investment Securities | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other income (expense)		2	[8]	(4)	[8]	18	[9]	(7)	[9]
Income before income tax expense		2	[8]	(4)	[8]	18	[9]	(7)	[9]
Income tax expense (benefit)		(1)	[8]	1	[8]	(5)	[9]	2	[9]
Net Income From Continuing Operations		1	[8]	(3)	[8]	13	[9]	(5)	[9]
Investment Securities | Reclassification out of Accumulated Other Comprehensive Income | Virginia Electric and Power Company
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other income (expense)				(1)	[10]	(1)	[11]	(1)	[11]
Income before income tax expense				(1)	[10]	(1)	[11]	(1)	[11]
Net Income From Continuing Operations				(1)	[10]	(1)	[11]	(1)	[11]
Pension and Other Postretirement Benefit Costs
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance		(1,070)	[12]	(1,309)	[12]	(1,133)	[13]	(1,359)	[13]
Other comprehensive income before reclassifications: gains (losses)				(1)	[12]	30	[13]	5	[13]
Total other comprehensive income (loss)		26	[12]	18	[12]	89	[13]	68	[13]
Ending balance	[12],[13]	(1,044)		(1,291)		(1,044)		(1,291)
Pension and Other Postretirement Benefit Costs | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other income (expense)		35	[12]	25	[12]	80	[13]	85	[13]
Income before income tax expense		35	[12]	25	[12]	80	[13]	85	[13]
Income tax expense (benefit)		(9)	[12]	(6)	[12]	(21)	[13]	(22)	[13]
Net Income From Continuing Operations		26	[12]	19	[12]	59	[13]	63	[13]
Equity Method Investees
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance		(3)	[14]	(1)	[14]	(4)	[15]	(1)	[15]
Other comprehensive income before reclassifications: gains (losses)				(3)	[14]	1	[15]	(3)	[15]
Total other comprehensive income (loss)		0	[14]	(3)	[14]	1	[15]	(3)	[15]
Ending balance	[14],[15]	(3)		(4)		(3)		(4)
AOCI
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance		(1,396)		(1,640)		(1,458)		(1,717)
Other comprehensive income before reclassifications: gains (losses)		(17)		(2)		(21)		8
Total other comprehensive income (loss)		22		24		84		101
Ending balance		(1,374)		(1,616)		(1,374)		(1,616)
AOCI | Virginia Electric and Power Company
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance		(7)		(33)		(41)		(52)
Other comprehensive income before reclassifications: gains (losses)		9		(2)		43		16
Total other comprehensive income (loss)		9		(3)		43		16
Ending balance		2		(36)		2		(36)
AOCI | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Purchased Gas								1
Interest and related charges		16		14		44		46
Other income (expense)		37		21		98		78
Income before income tax expense		53		35		142		125
Income tax expense (benefit)		(14)		(9)		(37)		(32)
Net Income From Continuing Operations		39		26		105		93
AOCI | Reclassification out of Accumulated Other Comprehensive Income | Virginia Electric and Power Company
Accumulated Other Comprehensive Income (Loss) [Line Items]
Interest and related charges		1		1		2		2
Other income (expense)				(1)		(1)		(1)
Income before income tax expense		1				1		1
Income tax expense (benefit)		(1)		(1)		(1)		(1)
Net Income From Continuing Operations				(1)
Interest Rate | Virginia Electric and Power Company
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance				(39)		(45)		(60)
Other comprehensive income before reclassifications: gains (losses)		13		(2)		57		18
Total other comprehensive income (loss)		13		(2)		58		19
Ending balance		13		(41)		13		(41)
Interest Rate | Reclassification out of Accumulated Other Comprehensive Income | Virginia Electric and Power Company
Accumulated Other Comprehensive Income (Loss) [Line Items]
Interest and related charges		1		1		2		2
Income before income tax expense		1		1		2		2
Income tax expense (benefit)		$ (1)		$ (1)		(1)		(1)
Net Income From Continuing Operations						$ 1		$ 1
[1]Dominion Energy’s Consolidated Balance Sheet at December 31, 2021 has been derived from the audited Consolidated Balance Sheet at that date.[2]Virginia Power’s Consolidated Balance Sheet at December 31, 2021 has been derived from the audited Consolidated Balance Sheet at that date.[3]See Note 19 for amounts attributable to affiliates.[4]Net of $87 million, $94 million, $121 million and $125 million tax at September 30, 2022, June 30, 2022, September 30, 2021 and June 30, 2021, respectively.[5] Net of $87 million, $119 million, $121 million and $141 million tax at September 30, 2022, December 31, 2021, September 30, 2021 and December 31, 2020, respectively. Net of $(4) million, $16 million, $14 million and $21 million tax at September 30, 2022, December 31, 2021, September 30, 2021 and December 31, 2020, respectively. Net of $23 million, $(10) million, $(11) million and $(21) million tax at September 30, 2022, December 31, 2021, September 30, 2021 and December 31, 2020, respectively. Net of $4 million, $(2) million, $(2) million and $(3) million tax at September 30, 2022, December 31, 2021, September 30, 2021 and December 31, 2020, respectively. Net of $367 million, $396 million, $448 million, and $478 million tax at September 30, 2022, December 31, 2021, September 30, 2021 and December 31, 2020, respectively. Net of $1 million, $ 1 million, $1 million and $— tax at September 30, 2022, December 31, 2021, September 30, 2021 and December 31, 2020, respectively.

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Income (Loss) (Schedule of Changes in AOCI Net of Tax and Reclassifications out of AOCI by Component) (Parenthetical) (Detail) - USD ($) $ in Millions	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020
Total Derivative-Hedging Activities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amount of tax	$ 87	$ 94	$ 119	$ 121	$ 125	$ 141
Total Derivative-Hedging Activities | Virginia Electric and Power Company
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amount of tax	(4)		16	14	14	21
Investment Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amount of tax	23	14	(10)	(11)	(12)	(21)
Investment Securities | Virginia Electric and Power Company
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amount of tax	4	3	(2)	(2)	(2)	(3)
Pension and Other Postretirement Benefit Costs
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amount of tax	367	376	396	448	$ 455	$ 478
Equity Method Investees
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amount of tax	$ 1	$ 1	$ 1	$ 1

Fair Value Measurements (Fair V

Fair Value Measurements (Fair Value, Option, Quantitative Disclosures) (Detail) $ in Millions		9 Months Ended
		Sep. 30, 2022 USD ($) $ / MMBTU $ / MWh	Dec. 31, 2021 USD ($)
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Assets		$ 2,469	$ 613
Fair Value of Derivative Liabilities		2,371	868
Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Assets		961	300
Fair Value of Derivative Liabilities		917	470
Fair Value, Measurements, Recurring
Fair Value, Option, Quantitative Disclosures [Line Items]
Total assets		7,772	8,161
Total liabilities		2,371	868
Fair Value, Measurements, Recurring | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Total assets		3,809	3,847
Total liabilities		917	470
Fair Value, Measurements, Recurring | Commodity Contract
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Assets		870	282
Fair Value of Derivative Liabilities		1,509	469
Fair Value, Measurements, Recurring | Commodity Contract | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Assets		359	146
Fair Value of Derivative Liabilities		503	133
Fair Value, Measurements, Recurring | Level 3
Fair Value, Option, Quantitative Disclosures [Line Items]
Total assets		499	230
Total liabilities		17	8
Fair Value, Measurements, Recurring | Level 3 | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Total assets		288	110
Total liabilities		17	8
Fair Value, Measurements, Recurring | Level 3 | Commodity Contract
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Assets		499	230
Fair Value of Derivative Liabilities		17	8
Fair Value, Measurements, Recurring | Level 3 | Commodity Contract | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Assets		288	110
Fair Value of Derivative Liabilities		$ 17	$ 8
Fair Value, Measurements, Recurring | Level 3 | Commodity Contract | Natural Gas | Minimum | Assets | Market Price | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[1]	(2)
Fair Value, Measurements, Recurring | Level 3 | Commodity Contract | Natural Gas | Maximum | Assets | Market Price | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[1]	6
Fair Value, Measurements, Recurring | Level 3 | Commodity Contract | Natural Gas | Weighted Average | Assets | Market Price | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[1],[2]	(1)
Fair Value, Measurements, Recurring | Level 3 | Valuation, Income Approach | Commodity Contract | Natural Gas
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Assets	[1]	$ 1
Fair Value of Derivative Liabilities	[1]	12
Fair Value, Measurements, Recurring | Level 3 | Valuation, Income Approach | Commodity Contract | Natural Gas | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Assets	[1]	1
Fair Value of Derivative Liabilities	[1]	$ 12
Fair Value, Measurements, Recurring | Level 3 | Valuation, Income Approach | Commodity Contract | Natural Gas | Minimum
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[1]	(2)
Fair Value, Measurements, Recurring | Level 3 | Valuation, Income Approach | Commodity Contract | Natural Gas | Minimum | Liabilities | Market Price
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[3]	(2)
Fair Value, Measurements, Recurring | Level 3 | Valuation, Income Approach | Commodity Contract | Natural Gas | Minimum | Liabilities | Market Price | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[3]	(2)
Fair Value, Measurements, Recurring | Level 3 | Valuation, Income Approach | Commodity Contract | Natural Gas | Maximum
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[1]	6
Fair Value, Measurements, Recurring | Level 3 | Valuation, Income Approach | Commodity Contract | Natural Gas | Maximum | Liabilities | Market Price
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[3]	8
Fair Value, Measurements, Recurring | Level 3 | Valuation, Income Approach | Commodity Contract | Natural Gas | Maximum | Liabilities | Market Price | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[3]	5
Fair Value, Measurements, Recurring | Level 3 | Valuation, Income Approach | Commodity Contract | Natural Gas | Weighted Average
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[1],[2]	(1)
Fair Value, Measurements, Recurring | Level 3 | Valuation, Income Approach | Commodity Contract | Natural Gas | Weighted Average | Liabilities | Market Price
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[2],[3]	1
Fair Value, Measurements, Recurring | Level 3 | Valuation, Income Approach | Commodity Contract | Natural Gas | Weighted Average | Liabilities | Market Price | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[2],[3]	1
Fair Value, Measurements, Recurring | Level 3 | Valuation, Income Approach | Commodity Contract | FTRs
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Assets		$ 263
Fair Value of Derivative Liabilities		5
Fair Value, Measurements, Recurring | Level 3 | Valuation, Income Approach | Commodity Contract | FTRs | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Assets		263
Fair Value of Derivative Liabilities		$ 5
Fair Value, Measurements, Recurring | Level 3 | Valuation, Income Approach | Commodity Contract | FTRs | Minimum | Assets | Market Price
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[3]	1
Fair Value, Measurements, Recurring | Level 3 | Valuation, Income Approach | Commodity Contract | FTRs | Minimum | Assets | Market Price | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[3]	1
Fair Value, Measurements, Recurring | Level 3 | Valuation, Income Approach | Commodity Contract | FTRs | Minimum | Liabilities | Market Price
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[3]	1
Fair Value, Measurements, Recurring | Level 3 | Valuation, Income Approach | Commodity Contract | FTRs | Minimum | Liabilities | Market Price | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[3]	1
Fair Value, Measurements, Recurring | Level 3 | Valuation, Income Approach | Commodity Contract | FTRs | Maximum | Assets | Market Price
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[3]	19
Fair Value, Measurements, Recurring | Level 3 | Valuation, Income Approach | Commodity Contract | FTRs | Maximum | Assets | Market Price | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[3]	19
Fair Value, Measurements, Recurring | Level 3 | Valuation, Income Approach | Commodity Contract | FTRs | Maximum | Liabilities | Market Price
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[3]	10
Fair Value, Measurements, Recurring | Level 3 | Valuation, Income Approach | Commodity Contract | FTRs | Maximum | Liabilities | Market Price | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[3]	10
Fair Value, Measurements, Recurring | Level 3 | Valuation, Income Approach | Commodity Contract | FTRs | Weighted Average | Assets | Market Price
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[2],[3]	5
Fair Value, Measurements, Recurring | Level 3 | Valuation, Income Approach | Commodity Contract | FTRs | Weighted Average | Assets | Market Price | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[2],[3]	5
Fair Value, Measurements, Recurring | Level 3 | Valuation, Income Approach | Commodity Contract | FTRs | Weighted Average | Liabilities | Market Price
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[2],[3]	4
Fair Value, Measurements, Recurring | Level 3 | Valuation, Income Approach | Commodity Contract | FTRs | Weighted Average | Liabilities | Market Price | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[2],[3]	4
Fair Value, Measurements, Recurring | Level 3 | Valuation, Income Approach | Commodity Contract | Electricity
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Assets		$ 211
Fair Value, Measurements, Recurring | Level 3 | Valuation, Income Approach | Commodity Contract | Electricity | Minimum | Assets | Market Price
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[3]	28
Fair Value, Measurements, Recurring | Level 3 | Valuation, Income Approach | Commodity Contract | Electricity | Maximum | Assets | Market Price
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[3]	199
Fair Value, Measurements, Recurring | Level 3 | Valuation, Income Approach | Commodity Contract | Electricity | Weighted Average | Assets | Market Price
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[2],[3]	51
Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Liabilities	[1]	$ 24
Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Liabilities	[1]	$ 24
Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Minimum | Assets | Market Price
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[3]	4
Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Minimum | Assets | Price Volatility
Fair Value, Option, Quantitative Disclosures [Line Items]
Price volatility (percentage)	[4]	13%
Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Maximum | Assets | Market Price
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[3]	17
Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Maximum | Assets | Price Volatility
Fair Value, Option, Quantitative Disclosures [Line Items]
Price volatility (percentage)	[4]	70%
Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Weighted Average | Assets | Market Price
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[2],[3]	10
Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity Contract | Natural Gas | Weighted Average | Assets | Price Volatility
Fair Value, Option, Quantitative Disclosures [Line Items]
Price volatility (percentage)	[2],[4]	51%
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	[3]	4
Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity | Natural Gas | Minimum | Assets | Price Volatility | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Price volatility (percentage)	[4]	8%
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	[3]	19
Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity | Natural Gas | Maximum | Assets | Price Volatility | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Price volatility (percentage)	[4]	31%
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]	10
Fair Value, Measurements, Recurring | Level 3 | Option Model | Commodity | Natural Gas | Weighted Average | Assets | Price Volatility | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Price volatility (percentage)	[2],[4]	51%
[1]Includes basis.[2]Averages weighted by volume.[3]Represents market prices beyond defined terms for Levels 1 and 2.[4]Represents volatilities unrepresented in published markets.

Fair Value Measurements (Narrat

Fair Value Measurements (Narrative) (Detail) - USD ($)	3 Months Ended			9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unrealized gains or losses included in operating revenue in Level 3 fair value category	$ 0	$ (6,000,000)		$ 0	$ (8,000,000)
Virginia Electric and Power Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unrealized gains or losses included in operating revenue in Level 3 fair value category	$ 0	$ 0		$ 0	$ 0
Virginia Electric and Power Company | Level 2 | Nonregulated Retail Software Development | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-lived assets, estimated fair value			$ 1,000,000
Virginia Electric and Power Company | Impairment of Assets and Other Charges | Nonregulated Retail Software Development
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of assets and other charges (benefits)			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		Sep. 30, 2022	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset		$ 2,469	$ 613
Derivative Liabilities		2,371	868
Virginia Electric and Power Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset		961	300
Derivative Liabilities		917	470
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets		7,772	8,161
Total Liabilities		2,371	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		3,809	3,847
Total Liabilities		917	470
Fair Value, Measurements, Recurring | Equity securities: | U.S.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	[1]	3,514	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	[2]	1,870	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]	563	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	[2]	372	531
Fair Value, Measurements, Recurring | Fixed Income | Government Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	[1]	1,226	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	[2]	606	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	[2]		(3)
Fair Value, Measurements, Recurring | Foreign Exchange
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset		6	8
Derivative Liabilities		387
Fair Value, Measurements, Recurring | Foreign Exchange | Virginia Electric and Power Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset		6	8
Derivative Liabilities		387
Fair Value, Measurements, Recurring | Commodity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset		870	282
Derivative Liabilities		1,509	469
Fair Value, Measurements, Recurring | Commodity | Virginia Electric and Power Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset		359	146
Derivative Liabilities		503	133
Fair Value, Measurements, Recurring | Interest Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset		1,593	323
Derivative Liabilities		475	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]
Derivative Asset		596	146
Derivative Liabilities		27	337
Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets		3,673	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		1,958	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]	3,514	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	[2]	1,870	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]	159	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	[2]	88	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	[2]		(3)
Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets		3,600	2,520
Total Liabilities		2,354	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		1,563	1,227
Total Liabilities		900	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]	563	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	[2]	372	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]	1,067	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	[2]	518	506
Fair Value, Measurements, Recurring | Level 2 | Foreign Exchange
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset		6	8
Derivative Liabilities		387
Fair Value, Measurements, Recurring | Level 2 | Foreign Exchange | Virginia Electric and Power Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset		6	8
Derivative Liabilities		387
Fair Value, Measurements, Recurring | Level 2 | Commodity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset		371	52
Derivative Liabilities		1,492	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]
Derivative Asset		71	36
Derivative Liabilities		486	125
Fair Value, Measurements, Recurring | Level 2 | Interest Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset		1,593	323
Derivative Liabilities		475	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]
Derivative Asset		596	146
Derivative Liabilities		27	337
Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets		499	230
Total Liabilities		17	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		288	110
Total Liabilities		17	8
Fair Value, Measurements, Recurring | Level 3 | Commodity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset		499	230
Derivative Liabilities		17	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]
Derivative Asset		288	110
Derivative Liabilities		$ 17	$ 8
[1]Includes investments held in the nuclear decommissioning and rabbi trusts. Excludes $238 million and $366 million of assets at September 30, 2022 and December 31, 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.[2]Includes investments held in the nuclear decommissioning trusts. Excludes $150 million and $185 million of assets at September 30, 2022 and December 31, 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 Measurements (Asse_2

Fair Value Measurements (Assets and Liabilities that are Measured at Fair Value on a Recurring Basis) (Parenthetical) (Detail) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value using NAV	$ 238	$ 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	$ 150	$ 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	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning balance	$ 480	$ 62	$ 222	$ 103
Total realized and unrealized gains (losses):
Included in earnings		(6)		(8)
Included in earnings	$ 181	$ 29	$ 346	$ 12
Revenue, Product and Service [Extensible Enumeration]	us-gaap:RegulatedOperatingRevenueElectricNonNuclear	us-gaap:RegulatedOperatingRevenueElectricNonNuclear	us-gaap:RegulatedOperatingRevenueElectricNonNuclear	us-gaap:RegulatedOperatingRevenueElectricNonNuclear
Included in regulatory assets/liabilities	$ 2	$ 88	$ 243	$ 49
Settlements	(181)	(29)	(346)	(12)
Purchases			17
Ending balance	482	144	482	144
Virginia Electric and Power Company
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning balance	245	74	102	103
Total realized and unrealized gains (losses):
Included in earnings	$ 142	$ 27	$ 293	$ 10
Revenue, Product and Service [Extensible Enumeration]	us-gaap:RegulatedOperatingRevenueElectricNonNuclear	us-gaap:RegulatedOperatingRevenueElectricNonNuclear	us-gaap:RegulatedOperatingRevenueElectricNonNuclear	us-gaap:RegulatedOperatingRevenueElectricNonNuclear
Included in regulatory assets/liabilities	$ 26	$ 41	$ 152	$ 12
Settlements	(142)	(27)	(293)	(10)
Purchases	0	0	17	0
Ending balance	$ 271	$ 115	$ 271	$ 115

Fair Value Measurements (Financ

Fair Value Measurements (Financial Instruments' Carrying Amounts and Fair Values) (Detail) - USD ($) $ in Millions		Sep. 30, 2022	Dec. 31, 2021
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	[1]	$ 38,487	$ 35,996
Supplemental credit facility borrowings		450	0
Junior subordinated notes	[2]	1,387	1,386
Estimate of Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	[1],[3]	34,700	40,947
Supplemental credit facility borrowings	[3]	450	0
Junior subordinated notes	[2],[3]	1,338	1,470
Virginia Electric and Power Company | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	[2]	15,618	13,753
Virginia Electric and Power Company | Estimate of Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	[2],[3]	$ 13,840	$ 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 includes the valuation of certain fair value hedges associated with fixed rate debt of $2 million[2]Carrying amount includes current portions included in securities due within one year and amounts which represent the unamortized debt issuance costs, discount or premium.[3]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 ($) $ in Millions	9 Months Ended
	Sep. 30, 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		$ 2
Supplemental line of credit facility borrowings expiration period	1 year
Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Valuation of certain fair value hedges associated with fixed rate debt	$ 0

Derivatives and Hedge Account_3

Derivatives and Hedge Accounting Activities (Schedule of Offsetting Assets) (Detail) - USD ($) $ in Millions		Sep. 30, 2022	Dec. 31, 2021
Offsetting Assets [Line Items]
Gross Assets Presented in the Consolidated Balance Sheet	[1]	$ 2,258	$ 493
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		714	69
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Received		0	0
Net Amounts		1,544	424
Virginia Electric and Power Company
Offsetting Assets [Line Items]
Gross Assets Presented in the Consolidated Balance Sheet	[2]	899	271
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		176	35
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Received		0	0
Net Amounts		723	236
Commodity Contract | Over-the-counter
Offsetting Assets [Line Items]
Gross Assets Presented in the Consolidated Balance Sheet	[1]	367	153
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		11	13
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Received		0	0
Net Amounts		356	140
Commodity Contract | Over-the-counter | Virginia Electric and Power Company
Offsetting Assets [Line Items]
Gross Assets Presented in the Consolidated Balance Sheet	[2]	297	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		290	102
Commodity Contract | Exchange
Offsetting Assets [Line Items]
Gross Assets Presented in the Consolidated Balance Sheet	[1]	292	9
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		287	7
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Received		0	0
Net Amounts		5	2
Commodity Contract | Exchange | Virginia Electric and Power Company
Offsetting Assets [Line Items]
Gross Assets Presented in the Consolidated Balance Sheet	[2]	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]	1,593	323
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		410	49
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Received		0	0
Net Amounts		1,183	274
Interest Rate Contract | Over-the-counter | Virginia Electric and Power Company
Offsetting Assets [Line Items]
Gross Assets Presented in the Consolidated Balance Sheet	[2]	596	146
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		163	20
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Received		0	0
Net Amounts		433	126
Foreign currency exchange rate | Over-the-counter
Offsetting Assets [Line Items]
Gross Assets Presented in the Consolidated Balance Sheet	[1]	6	8
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		6	0
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Received		0	0
Net Amounts		0	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	[2]	6	8
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		6	0
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Received		0	0
Net Amounts		$ 0	$ 8
[1]Excludes $211

Derivatives and Hedge Account_4

Derivatives and Hedge Accounting Activities (Schedule of Offsetting Assets) (Parenthetical) (Detail) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Offsetting Assets [Line Items]
Derivative assets, not subject to a master netting or similar arrangement	$ 211	$ 120
Virginia Electric and Power Company
Offsetting Assets [Line Items]
Derivative assets, not subject to a master netting or similar arrangement	$ 62	$ 29

Derivatives and Hedge Account_5

Derivatives and Hedge Accounting Activities (Schedule of Offsetting Liabilities) (Detail) - USD ($) $ in Millions		Sep. 30, 2022	Dec. 31, 2021
Offsetting Liabilities [Line Items]
Gross Liabilities Presented in the Consolidated Balance Sheet	[1]	$ 2,371	$ 868
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		714	69
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral		686	432
Net Amounts		971	367
Virginia Electric and Power Company
Offsetting Liabilities [Line Items]
Gross Liabilities Presented in the Consolidated Balance Sheet	[2]	915	464
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		176	35
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral		389	90
Net Amounts		350	339
Commodity Contract | Over-the-counter
Offsetting Liabilities [Line Items]
Gross Liabilities Presented in the Consolidated Balance Sheet	[1]	660	95
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		17	13
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral		121	54
Net Amounts		522	28
Commodity Contract | Over-the-counter | Virginia Electric and Power Company
Offsetting Liabilities [Line Items]
Gross Liabilities Presented in the Consolidated Balance Sheet	[2]	233	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		121	54
Net Amounts		99	22
Commodity Contract | Exchange
Offsetting Liabilities [Line Items]
Gross Liabilities Presented in the Consolidated Balance Sheet	[1]	849	374
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		287	7
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral		562	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	[2]	268	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		268	36
Net Amounts		0	0
Interest Rate Contract | Over-the-counter
Offsetting Liabilities [Line Items]
Gross Liabilities Presented in the Consolidated Balance Sheet	[1]	475	399
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		257	49
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral		3	11
Net Amounts		215	339
Interest Rate Contract | Over-the-counter | Virginia Electric and Power Company
Offsetting Liabilities [Line Items]
Gross Liabilities Presented in the Consolidated Balance Sheet	[2]	27	337
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		10	20
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral		0	0
Net Amounts		17	317
Foreign currency exchange rate | Over-the-counter
Offsetting Liabilities [Line Items]
Gross Liabilities Presented in the Consolidated Balance Sheet	[1]	387	0
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		153	0
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral		0	0
Net Amounts		234	0
Foreign currency exchange rate | Over-the-counter | Virginia Electric and Power Company
Offsetting Liabilities [Line Items]
Gross Liabilities Presented in the Consolidated Balance Sheet	[2]	387	0
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		153	0
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral		0	0
Net Amounts		$ 234	$ 0
[1] There were no derivative liabilities that are not subject to master netting or similar arrangements at September 30, 2022 or December 31, 2021.

Derivatives and Hedge Account_6

Derivatives and Hedge Accounting Activities (Schedule of Offsetting Liabilities) (Parenthetical) (Detail) - USD ($)	Sep. 30, 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	$ 2,000,000	$ 6,000,000

Derivatives and Hedge Account_7

Derivatives and Hedge Accounting Activities (Volume of Derivative Activity) (Detail) - 9 months ended Sep. 30, 2022 € in Millions, kr in Millions, $ in Millions		USD ($) MWh Bcf	DKK (kr)	EUR (€)
Fixed Price - Natural Gas - Current Derivative Contract
Derivative [Line Items]
Volume of derivative activity | Bcf	[1]	47
Fixed Price - Natural Gas - Current Derivative Contract | Virginia Electric and Power Company
Derivative [Line Items]
Volume of derivative activity | Bcf		34
Basis - Natural Gas - Current Derivative Contract
Derivative [Line Items]
Volume of derivative activity | Bcf	[1]	159
Basis - Natural Gas - Current Derivative Contract | Virginia Electric and Power Company
Derivative [Line Items]
Volume of derivative activity | Bcf	[1]	145
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		72
Financial Transmission Rights - Electricity- Current Derivative Contract | Virginia Electric and Power Company
Derivative [Line Items]
Volume of electricity | MWh		72
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]	358
Interest Rate - Current Derivative Contract | Virginia Electric and Power Company
Derivative [Line Items]
Derivative payment | $	[2]	$ 250
Foreign Currency Exchange Rate - Current Derivative Contract
Derivative [Line Items]
Derivative payment	[2]		kr 468	€ 351
Foreign Currency Exchange Rate - Current Derivative Contract | Virginia Electric and Power Company
Derivative [Line Items]
Derivative payment	[2]		468	351
Fixed Price - Natural Gas - Non-current Derivative Contract
Derivative [Line Items]
Volume of derivative activity | Bcf	[1]	7
Fixed Price - Natural Gas - Non-current Derivative Contract | Virginia Electric and Power Company
Derivative [Line Items]
Volume of derivative activity | Bcf		7
Basis - Natural Gas - Non-current Derivative Contract
Derivative [Line Items]
Volume of derivative activity | Bcf	[1]	439
Basis - Natural Gas - Non-current Derivative Contract | Virginia Electric and Power Company
Derivative [Line Items]
Volume of derivative activity | Bcf	[1]	428
Fixed Price - Electricity - Non-current Derivative Contract
Derivative [Line Items]
Volume of electricity | MWh		31
Fixed Price - Electricity - Non-current Derivative Contract | Virginia Electric and Power Company
Derivative [Line Items]
Volume of electricity | MWh		5
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]	12,581
Interest Rate - Non-current Derivative Contract | Virginia Electric and Power Company
Derivative [Line Items]
Derivative payment | $	[2]	$ 3,050
Foreign Currency Exchange Rate - Non-current Derivative Contract
Derivative [Line Items]
Derivative payment	[2]		4,167	2,651
Foreign Currency Exchange Rate - Non-current Derivative Contract | Virginia Electric and Power Company
Derivative [Line Items]
Derivative payment	[2]		kr 4,167	€ 2,651
[1]Includes options.[2]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	9 Months Ended
	Sep. 30, 2022 USD ($)
Derivative Instruments Gain Loss [Line Items]
AOCI After-Tax	$ (261)
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	13
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	(261)
Interest rate, Amounts Expected to be Reclassified to Earnings During the Next 12 Months After-Tax	$ (33)
Maximum Term	387 months
Interest Rate Contract | Virginia Electric and Power Company
Derivative Instruments Gain Loss [Line Items]
AOCI After-Tax	$ 13
Interest rate, Amounts Expected to be Reclassified to Earnings During the Next 12 Months After-Tax	$ (1)
Maximum Term	387 months

Derivatives and Hedge Account_9

Derivatives and Hedge Accounting Activities (Narrative) (Detail) - USD ($)	Sep. 30, 2022	Sep. 30, 2021
Derivative Instrument Detail [Abstract]
Derivative instruments designated in fair value hedges	$ 0	$ 0

Derivatives and Hedge Accoun_10

Derivatives and Hedge Accounting Activities (Schedule of Amounts Recorded on Consolidated 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	Sep. 30, 2022	Dec. 31, 2021
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Carrying Amount of the Hedged Asset (Liability)	$ 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		Sep. 30, 2022	Dec. 31, 2021
Derivatives Fair Value [Line Items]
Derivative Asset, Current		$ 670	$ 122
Derivative Asset, Current		670	122	[1]
Derivative Asset, Noncurrent		1,799	491	[1]
Derivative Asset		2,469	613
Derivative Liabilities, Current		1,179	359
Derivative Liabilities, Current		1,179	359	[1]
Derivative Liabilities, Noncurrent		1,192	509	[1]
Derivative Liabilities		2,371	868
Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Asset, Current	[2]	363	76	[3]
Derivative Asset, Noncurrent	[4]	598	224
Derivative Asset		961	300
Derivative Liabilities, Current	[2]	442	134	[3]
Derivative Liabilities, Noncurrent	[5]	475	336
Derivative Liabilities		917	470
Commodity Contract
Derivatives Fair Value [Line Items]
Derivative Asset, Current		610	103
Derivative Asset, Noncurrent		260	179
Derivative Liabilities, Current		1,083	304
Derivative Liabilities, Noncurrent		426	165
Commodity Contract | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Asset, Current		357	74
Derivative Asset, Noncurrent		2	72
Derivative Liabilities, Current		392	92
Derivative Liabilities, Noncurrent		111	41
Interest Rate Contract
Derivatives Fair Value [Line Items]
Derivative Asset, Current		54	18
Derivative Asset, Noncurrent		1,539	305
Derivative Liabilities, Current		46	55
Derivative Liabilities, Noncurrent		429	344
Interest Rate Contract | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Asset, Current			1
Derivative Asset, Noncurrent		596	145
Derivative Liabilities, Current			42
Derivative Liabilities, Noncurrent		27	295
Foreign currency exchange rate
Derivatives Fair Value [Line Items]
Derivative Asset, Current		6	1
Derivative Asset, Noncurrent			7
Derivative Liabilities, Current		50
Derivative Liabilities, Noncurrent		337
Foreign currency exchange rate | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Asset, Current		6	1
Derivative Asset, Noncurrent			7
Derivative Liabilities, Current		50
Derivative Liabilities, Noncurrent		337
Designated as Hedging Instrument
Derivatives Fair Value [Line Items]
Derivative Asset, Current		0	1
Derivative Asset, Noncurrent		596	145
Derivative Asset		596	146
Derivative Liabilities, Current		0	42
Derivative Liabilities, Noncurrent		27	295
Derivative Liabilities		27	337
Designated as Hedging Instrument | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Asset, Current		0	1
Derivative Asset, Noncurrent	[4]	596	145
Derivative Asset		596	146
Derivative Liabilities, Current		0	42
Derivative Liabilities, Noncurrent	[5]	27	295
Derivative Liabilities		27	337
Designated as Hedging Instrument | Commodity Contract
Derivatives Fair Value [Line Items]
Derivative Asset, Current		0	0
Derivative Asset, Noncurrent		0	0
Derivative Liabilities, Current		0	0
Derivative Liabilities, 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, Current		0	0
Derivative Liabilities, Noncurrent		0	0
Designated as Hedging Instrument | Interest Rate Contract
Derivatives Fair Value [Line Items]
Derivative Asset, Current		0	1
Derivative Asset, Noncurrent		596	145
Derivative Liabilities, Current		0	42
Derivative Liabilities, Noncurrent		27	295
Designated as Hedging Instrument | Interest Rate Contract | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Asset, Current			1
Derivative Asset, Noncurrent		596	145
Derivative Liabilities, Current			42
Derivative Liabilities, Noncurrent		27	295
Designated as Hedging Instrument | Foreign currency exchange rate
Derivatives Fair Value [Line Items]
Derivative Asset, Current		0	0
Derivative Asset, Noncurrent			0
Derivative Liabilities, Current		0
Derivative Liabilities, Noncurrent		0
Designated as Hedging Instrument | Foreign currency exchange rate | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Asset, Current		0	0
Derivative Asset, Noncurrent			0
Derivative Liabilities, Current		0
Derivative Liabilities, Noncurrent		0
Fair Value - Derivatives not under Hedge Accounting
Derivatives Fair Value [Line Items]
Derivative Asset, Current		670	121
Derivative Asset, Noncurrent		1,203	346
Derivative Asset		1,873	467
Derivative Liabilities, Current		1,179	317
Derivative Liabilities, Noncurrent		1,165	214
Derivative Liabilities		2,344	531
Fair Value - Derivatives not under Hedge Accounting | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Asset, Current		363	75
Derivative Asset, Noncurrent	[4]	2	79
Derivative Asset		365	154
Derivative Liabilities, Current		442	92
Derivative Liabilities, Noncurrent	[5]	448	41
Derivative Liabilities		890	133
Fair Value - Derivatives not under Hedge Accounting | Commodity Contract
Derivatives Fair Value [Line Items]
Derivative Asset, Current		610	103
Derivative Asset, Noncurrent		260	179
Derivative Liabilities, Current		1,083	304
Derivative Liabilities, Noncurrent		426	165
Fair Value - Derivatives not under Hedge Accounting | Commodity Contract | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Asset, Current		357	74
Derivative Asset, Noncurrent		2	72
Derivative Liabilities, Current		392	92
Derivative Liabilities, Noncurrent		111	41
Fair Value - Derivatives not under Hedge Accounting | Interest Rate Contract
Derivatives Fair Value [Line Items]
Derivative Asset, Current		54	17
Derivative Asset, Noncurrent		943	160
Derivative Liabilities, Current		46	13
Derivative Liabilities, Noncurrent		402	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
Derivative Asset, Noncurrent		0	0
Derivative Liabilities, Current			0
Derivative Liabilities, Noncurrent		0	0
Fair Value - Derivatives not under Hedge Accounting | Foreign currency exchange rate
Derivatives Fair Value [Line Items]
Derivative Asset, Current		6	1
Derivative Asset, Noncurrent			7
Derivative Liabilities, Current		50
Derivative Liabilities, Noncurrent		337
Fair Value - Derivatives not under Hedge Accounting | Foreign currency exchange rate | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Asset, Current		6	1
Derivative Asset, Noncurrent			$ 7
Derivative Liabilities, Current		50
Derivative Liabilities, Noncurrent		$ 337
[1]Dominion Energy’s Consolidated Balance Sheet at December 31, 2021 has been derived from the audited Consolidated Balance Sheet at that date.[2]See Note 19 for amounts attributable to affiliates.[3]Virginia Power’s Consolidated Balance Sheet at December 31, 2021 has been derived from the audited Consolidated Balance Sheet at that date.[4]Noncurrent derivative assets are presented in other deferred charges and other assets in Virginia Power’s Consolidated Balance Sheets.

Derivatives and Hedge Accoun_12

Derivatives and Hedge Accounting Activities (Gains and Losses on Derivatives in Cash Flow Hedging Relationships) (Detail) - Cash Flow Hedges - USD ($) $ in Millions		3 Months Ended				9 Months Ended
		Sep. 30, 2022		Sep. 30, 2021		Sep. 30, 2022	Sep. 30, 2021
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives	[1]	$ 14		$ (2)		$ 86	$ 29
Amount of Gain (Loss) Reclassified From AOCI to Income		(16)		(14)		(44)	(47)
Increase (Decrease) in Derivatives Subject to Regulatory Treatment	[2]	182		9		815	198
Virginia Electric and Power Company
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives	[3]	18		(2)		77	24
Amount of Gain (Loss) Reclassified From AOCI to Income		(1)		(1)		(2)	(2)
Increase (Decrease) in Derivatives Subject to Regulatory Treatment	[4]	182		8		814	194
Commodity Contract
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Reclassified From AOCI to Income	[5]						(1)
Interest Rate Contract
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives	[1]	14	[6]	(2)	[6]	86	29
Amount of Gain (Loss) Reclassified From AOCI to Income		(16)	[6]	(14)	[6]	(44)	(46)
Increase (Decrease) in Derivatives Subject to Regulatory Treatment	[2]	182	[6]	9	[6]	815	198
Interest Rate Contract | Virginia Electric and Power Company
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives	[3],[7]	18		(2)		77	24
Amount of Gain (Loss) Reclassified From AOCI to Income	[7]	(1)		(1)		(2)	(2)
Increase (Decrease) in Derivatives Subject to Regulatory Treatment	[4],[7]	$ 182		$ 8		$ 814	$ 194
[1]Amounts deferred into AOCI have no associated effect in Dominion Energy’s 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 Dominion Energy’s Consolidated Statements of Income.[3]Amounts deferred into AOCI have no associated effect in Virginia Power’s Consolidated Statements of Income.[4]Represents net derivative activity deferred into and amortized out of regulatory assets/liabilities. Amounts deferred into regulatory assets/liabilities have no associated effect in Virginia Power’s Consolidated Statements of Income.[5] Amounts recorded in Dominion Energy’s Consolidated Statement of Income are classified in purchased gas. Amounts recorded in Dominion Energy’s Consolidated Statement of Income are classified in interest and related charges.

Derivatives and Hedge Accoun_13

Derivatives and Hedge Accounting Activities (Schedule of Derivatives not Designated as Hedging Instruments) (Detail) - Derivatives Not Designated as Hedging Instruments - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives	[1],[2]	$ (8)	$ (285)	$ 127	$ (340)
Virginia Electric and Power Company
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives	[3],[4]	58	23	111	(20)
Commodity Contract | Operating Revenue
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives	[1],[2]	(306)	(334)	(908)	(521)
Commodity Contract | Operating Revenue | Virginia Electric and Power Company
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives	[3],[4]	(108)	(19)	(237)	(25)
Commodity Contract | Purchased Gas
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives	[1],[2]	1	25	6	32
Commodity Contract | Electric Fuel and Other Energy-Related Purchases
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives	[1],[2]	205	44	401	7
Commodity Contract | 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	[3],[4]	166	42	348	5
Interest Rate Contract | Interest And Related Charges
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives	[1],[2]	$ 92	$ (20)	$ 628	$ 142
[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[2]Includes derivative activity amortized out of regulatory assets/liabilities. Amounts deferred into regulatory assets/liabilities have no associated effect in Dominion Energy’s Consolidated Statements of Income[3]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.[4]Includes derivative activity amortized out of regulatory assets/liabilities. Amounts deferred into regulatory assets/liabilities have no associated effect in Virginia Power’s Consolidated Statements of Income.

Investments (Narrative) (Detail

Investments (Narrative) (Detail) - USD ($) $ in Millions		1 Months Ended		3 Months Ended				9 Months Ended
		May 31, 2022	Feb. 28, 2022	Sep. 30, 2022	Aug. 31, 2022	Mar. 31, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Schedule of Equity Method Investments [Line Items]
Earnings from equity method investees				$ 92			$ 69	$ 255	$ 214
Net losses from discontinued operations including noncontrolling interest	[1]			3			(65)	(15)	(119)
Distributions received from investment								268	263
Equity method affiliates includes cash and accrued amounts of contributions								93	1,000
Equity method investment goodwill				11				11		$ 27
Income loss from continuing operations before income taxes extraordinary items noncontrolling interest				905			636	1,264	2,050
Contributions to equity method affiliates								34	1,006
Assets				8,699				8,699		7,269	[2]
Liabilities				12,172				$ 12,172		8,673	[2]
Wrangler Retail Gas Holdings LLC | Gas Supply, Inc.
Schedule of Equity Method Investments [Line Items]
Ownership interest percentage of limited partner interests								15%
Cash consideration from sale of noncontrolling interest								$ 85
Amount of gain from sale								11
Amount of gain from sale, after tax								8
Dominion Energy Virginia
Schedule of Equity Method Investments [Line Items]
Cash consideration from sale of noncontrolling interest			$ 120
Amount of gain from sale						$ 23
Amount of gain from sale, after tax						$ 16
Agreement entered date			2022-02
Limited partnership interest sale transaction, proceeds received			$ 60
Percentage ownership in total units		50%	50%
Initial fair value			$ 60
Total cash proceeds expected		$ 108
Expects to recognize gains totaling		130
Expects to recognize gains totaling, after tax		100
Dominion Energy Virginia | Held for sale
Schedule of Equity Method Investments [Line Items]
Assets				83				83
Liabilities				4				4
Atlantic Coast Pipeline
Schedule of Equity Method Investments [Line Items]
Net losses from discontinued operations including noncontrolling interest								6	19
Contributions to equity method affiliates								0	965
Atlantic Coast Pipeline | Other Current Liabilities
Schedule of Equity Method Investments [Line Items]
Liabilities from abandonment of project				119				119		113
Cove Point
Schedule of Equity Method Investments [Line Items]
Distributions received from investment				$ 98			$ 85	$ 259	$ 235
Percentage of Income loss from continuing operations before income taxes extraordinary items noncontrolling interest				100%			100%	100%	100%
Income loss from continuing operations before income taxes extraordinary items noncontrolling interest				$ 197			$ 136	$ 506	$ 410
Cove Point | Cove Point | GT&S Transaction
Schedule of Equity Method Investments [Line Items]
Percentage of noncontrolling limited partnership interest retained				50%				50%
Finite Lived Equity Method Investment Basis Difference
Schedule of Equity Method Investments [Line Items]
Carrying amount of investment that exceeded share of underlying equity				$ 227				$ 227		244
Equity method investment goodwill										(4)
Finite Lived Equity Method Investment Basis Difference | Cove Point
Schedule of Equity Method Investments [Line Items]
Equity method investment goodwill				216				216		221
Trading Securities
Schedule of Equity Method Investments [Line Items]
Rabbi trust securities				$ 109				$ 109		$ 122
2019 Series A Corporate Units
Schedule of Equity Method Investments [Line Items]
Short-term deposit		2,000
2019 Series A Corporate Units | Minimum
Schedule of Equity Method Investments [Line Items]
Short-term deposit		1,600
2019 Series A Corporate Units | Maximum
Schedule of Equity Method Investments [Line Items]
Short-term deposit		2,000
2019 Series A Corporate Units | Series A Preferred Stock
Schedule of Equity Method Investments [Line Items]
Redemption obligation		$ 1,600
Preferred stock dividend rate percentage		1.75%			1.75%
[1] Includes income tax expense (benefit) of $(6) million for the three months ended September 30, 2021 and $4 million and $5 million for the nine months ended September 30, 2022 and 2021, respectively. There were no such amounts recorded during the three months ended September 30, 2022.

Investments (Equity and Fixed I

Investments (Equity and Fixed Income Securities, Insurance Contracts and Cash Equivalents in Decommissioning Trust Funds) (Detail) - USD ($) $ in Millions		9 Months Ended	12 Months Ended
		Sep. 30, 2022	Dec. 31, 2021
Investment Holdings [Line Items]
Fixed income securities Fair Value		$ 1,816
Amortized Cost, Total		3,604	$ 4,235
Total Unrealized Gains		2,210	3,815
Total Unrealized Losses	[1]	(224)	(100)
Allowance for Credit Losses, Total		0	0
Fair Value, Total		5,590	7,950	[2]
Net assets related to pending sales of securities		13
Net assets related to pending purchases of securities			35
Fair value of securities in an unrealized loss position		1,900	883
Virginia Electric and Power Company
Investment Holdings [Line Items]
Fixed income securities Fair Value		1,023
Amortized Cost, Total		1,995	1,997
Total Unrealized Gains		1,151	1,753
Total Unrealized Losses	[3]	(142)	(16)
Allowance for Credit Losses, Total		0	0
Fair Value, Total		3,004	3,734	[4]
Net assets related to pending sales of securities		6	5
Fair value of securities in an unrealized loss position		1,100	425
Corporate Debt Fixed Income Securities
Investment Holdings [Line Items]
Fixed income securities Amortized Cost, Total	[5]	649	854
Fixed income securities Total Unrealized Gains	[5]	0	32
Fixed income securities Total Unrealized Losses	[5]	(86)	(5)
Fixed income securities Allowance for Credit Losses	[5]	0	0
Fixed income securities Fair Value	[5]	563	881
Corporate Debt Fixed Income Securities | Virginia Electric and Power Company
Investment Holdings [Line Items]
Fixed income securities Amortized Cost, Total	[5]	434	517
Fixed income securities Total Unrealized Gains	[5]	0	17
Fixed income securities Total Unrealized Losses	[5]	(62)	(3)
Fixed income securities Allowance for Credit Losses	[5]	0	0
Fixed income securities Fair Value	[5]	372	531
Government Debt Fixed Income Securities
Investment Holdings [Line Items]
Fixed income securities Amortized Cost, Total	[5]	1,291	1,382
Fixed income securities Total Unrealized Gains	[5]	1	43
Fixed income securities Total Unrealized Losses	[5]	(101)	(7)
Fixed income securities Allowance for Credit Losses	[5]	0	0
Fixed income securities Fair Value	[5]	1,191	1,418
Government Debt Fixed Income Securities | Virginia Electric and Power Company
Investment Holdings [Line Items]
Fixed income securities Amortized Cost, Total	[5]	654	584
Fixed income securities Total Unrealized Gains	[5]	0	16
Fixed income securities Total Unrealized Losses	[5]	(48)	(2)
Fixed income securities Allowance for Credit Losses	[5]	0	0
Fixed income securities Fair Value	[5]	606	598
Insurance Contracts
Investment Holdings [Line Items]
Fixed income securities Amortized Cost, Total		214	255
Fixed income securities Total Unrealized Gains		0	0
Fixed income securities Total Unrealized Losses		0	0
Fixed income securities Fair Value		214	255
U.S.
Investment Holdings [Line Items]
Equity securities Amortized Cost	[6]	1,375	1,567
Equity securities Total Unrealized Gains	[6]	2,209	3,734
Equity securities Total Unrealized Losses	[6]	(37)	(13)
Equity securities Fair Value	[6]	3,547	5,288
U.S. | Virginia Electric and Power Company
Investment Holdings [Line Items]
Equity securities Amortized Cost	[6]	856	841
Equity securities Total Unrealized Gains	[6]	1,151	1,720
Equity securities Total Unrealized Losses	[6]	(32)	(11)
Equity securities Fair Value	[6]	1,975	2,550
Common/collective trust funds | Fixed Income
Investment Holdings [Line Items]
Fixed income securities Amortized Cost, Total	[5]	62	168
Fixed income securities Total Unrealized Gains	[5]	0	4
Fixed income securities Total Unrealized Losses	[5]	0	0
Fixed income securities Allowance for Credit Losses	[5]	0	0
Fixed income securities Fair Value	[5]	62	172
Common/collective trust funds | Fixed Income | Virginia Electric and Power Company
Investment Holdings [Line Items]
Fixed income securities Amortized Cost, Total	[5]	45	53
Fixed income securities Total Unrealized Gains	[5]	0	0
Fixed income securities Total Unrealized Losses	[5]	0	0
Fixed income securities Allowance for Credit Losses	[5]	0	0
Fixed income securities Fair Value	[5]	45	53
Cash equivalents and other
Investment Holdings [Line Items]
Cash equivalents and other, Amortized Cost	[7]	13	9
Cash equivalents and other, Total Unrealized Gains	[7]		2
Cash equivalents and other, Total Unrealized Losses	[7]		(75)
Cash equivalents and other, Allowance for Credit Losses	[7]	0	0
Cash equivalents and other, Fair Value	[7]	13	(64)
Cash equivalents and other | Virginia Electric and Power Company
Investment Holdings [Line Items]
Cash equivalents and other, Amortized Cost	[8]	6	2
Cash equivalents and other, Allowance for Credit Losses	[8]	0	0
Cash equivalents and other, Fair Value	[8]	$ 6	$ 2
[1]The fair value of securities in an unrealized loss position was $1.9 billion and $883 million at September 30, 2022 and December 31, 2021, respectively.[2]Dominion Energy’s Consolidated Balance Sheet at December 31, 2021 has been derived from the audited Consolidated Balance Sheet at that date.[3]The fair value of securities in an unrealized loss position was $1.1 billion and $425 million

Investments (Portion of Unreali

Investments (Portion of Unrealized Gains and Losses Relates to Equity Securities) (Detail) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Investment Holdings [Line Items]
Net gains (losses) recognized during the period		$ (205)	$ (15)	$ (1,123)	$ 616
Less: Net (gains) losses recognized during the period on securities sold during the period		(2)	(11)	3	(323)
Unrealized gains (losses) recognized during the period on securities still held at period end	[1]	(207)	(26)	(1,120)	293
Virginia Electric and Power Company
Investment Holdings [Line Items]
Net gains (losses) recognized during the period		(118)	6	(581)	319
Less: Net (gains) losses recognized during the period on securities sold during the period		(4)	(9)	(8)	(182)
Unrealized gains (losses) recognized during the period on securities still held at period end	[1]	$ (122)	$ (3)	$ (589)	$ 137
[1]Included in other income and the nuclear decommissioning trust regulatory liability.

Investments (Fair Value of Fixe

Investments (Fair Value of Fixed Income Securities by Contractual Maturity) (Detail) $ in Millions	Sep. 30, 2022 USD ($)
Schedule of Held-to-maturity Securities [Line Items]
Due in one year or less	$ 122
Due after one year through five years	512
Due after five years through ten years	453
Due after ten years	729
Total	1,816
Virginia Electric and Power Company
Schedule of Held-to-maturity Securities [Line Items]
Due in one year or less	64
Due after one year through five years	277
Due after five years through ten years	301
Due after ten years	381
Total	$ 1,023

Investments (Selected Informati

Investments (Selected Information Regarding Equity and Fixed Income Securities) (Detail) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Schedule of Available-for-sale Securities [Line Items]
Proceeds from sales		$ 605	$ 614	$ 2,686	$ 3,324
Realized gains	[1]	17	25	132	405
Realized losses	[1]	50	7	247	81
Virginia Electric and Power Company
Schedule of Available-for-sale Securities [Line Items]
Proceeds from sales		425	216	1,289	1,465
Realized gains	[1]	14	17	40	213
Realized losses	[1]	$ 33	$ 2	$ 85	$ 28
[1]Includes realized gains and losses recorded to the nuclear decommissioning trust regulatory liability.

Schedule of Acquisitions of Sol

Schedule of Acquisitions of Solar Projects (Detail) $ in Millions		9 Months Ended
		Sep. 30, 2022 USD ($) MW	Sep. 30, 2021 USD ($)
Property Plant And Equipment [Line Items]
Project Cost		$ 139	$ 87
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]	$ 130
Date of Commercial Operations		Expected 2023
MW Capacity | MW		62
Acquisition of Solar Project Atlanta Farms in Ohio
Property Plant And Equipment [Line Items]
Date Agreement Entered		2022-03
Date Agreement Closed		May 2022
Project Cost	[1]	$ 390
Date of Commercial Operations	[2]	Expected split
MW Capacity | MW		200
Acquisition of Solar Project Hardin II in Ohio
Property Plant And Equipment [Line Items]
Date Agreement Entered		2020-08
Date Agreement Closed		Expected 2022
Project Cost	[1]	$ 290
Date of Commercial Operations		Expected 2023
MW Capacity | MW		150
Virginia Electric and Power Company
Property Plant And Equipment [Line Items]
Project Cost		$ 51	$ 61
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	[3]	$ 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	[3]	$ 225
Date of Commercial Operations		Expected 2023
MW Capacity | MW		127
[1] Includes acquisition cost.

Property, Plant and Equipment (

Property, Plant and Equipment (Narrative) (Detail) - Utility Property - USD ($) $ in Millions	1 Months Ended	9 Months Ended
	Jun. 30, 2022	Sep. 30, 2022
Property Plant And Equipment [Line Items]
Sale of utility property	$ 16
Gain on sale of asset		$ 16
Gain on sale of asset after tax		$ 12

Regulatory Assets and Liabili_3

Regulatory Assets and Liabilities (Schedule of Regulatory Assets) (Detail) - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2022	Dec. 31, 2021
Regulatory Assets [Line Items]
Regulatory assets-current		$ 2,064	$ 1,492	[1]
Regulatory assets-noncurrent		8,961	8,643	[1]
Total regulatory assets		$ 11,025	10,135
Weighted Average
Regulatory Assets [Line Items]
Weighted average useful life		25 years
SCANA
Regulatory Assets [Line Items]
Electric service customers over period		20 years
Virginia Electric and Power Company
Regulatory Assets [Line Items]
Regulatory assets-current		$ 1,136	850	[2]
Regulatory assets-noncurrent		4,518	4,130	[2]
Total regulatory assets		$ 5,654	4,980
Virginia Electric and Power Company | Weighted Average
Regulatory Assets [Line Items]
Weighted average useful life		24 years
Deferred cost of fuel used in electric generation
Regulatory Assets [Line Items]
Regulatory assets-current	[3]	$ 571	251
Regulatory assets-noncurrent	[3]	1,318	409
Deferred cost of fuel used in electric generation | Virginia Electric and Power Company
Regulatory Assets [Line Items]
Regulatory assets-current	[4]	205	131
Regulatory assets-noncurrent	[4]	1,318	409
Deferred project costs and DSM programs for gas utilities
Regulatory Assets [Line Items]
Regulatory assets-current	[5]	68	53
Unrecovered gas costs
Regulatory Assets [Line Items]
Regulatory assets-current	[6]	184	191
Deferred rider costs for Virginia electric utility
Regulatory Assets [Line Items]
Regulatory assets-current	[7]	149	72
Regulatory assets-noncurrent	[7]	312	489
Ash pond and landfill closure costs
Regulatory Assets [Line Items]
Regulatory assets-current	[8]	62	193
Regulatory assets-noncurrent	[8]	$ 2,245	2,223
Regulatory assets expected collection period commencing year		2021
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 | Minimum
Regulatory Assets [Line Items]
Regulatory assets amounts expected collection period		15 years
Ash pond and landfill closure costs | Virginia Electric and Power Company
Regulatory Assets [Line Items]
Regulatory assets-current	[9]	$ 62	193
Regulatory assets-noncurrent	[9]	$ 2,242	2,223
Regulatory assets expected collection period commencing year		2021
Ash pond and landfill closure costs | Virginia Electric and Power Company | Maximum
Regulatory Assets [Line Items]
Regulatory assets amounts expected collection period		18 years
Ash pond and landfill closure costs | Virginia Electric and Power Company | Minimum
Regulatory Assets [Line Items]
Regulatory assets amounts expected collection period		15 years
Deferred nuclear refueling outage costs
Regulatory Assets [Line Items]
Regulatory assets-current	[10]	$ 55	79
Deferred nuclear refueling outage costs | Virginia Electric and Power Company
Regulatory Assets [Line Items]
Regulatory assets-current	[11]	55	79
NND Project Costs
Regulatory Assets [Line Items]
Regulatory assets-current	[12]	138	138
Regulatory assets-noncurrent	[12]	2,122	2,226
Deferred early plant retirement charges
Regulatory Assets [Line Items]
Regulatory assets-current	[13]	226	226
Regulatory assets-noncurrent	[13]	56	226
Deferred early plant retirement charges | Virginia Electric and Power Company
Regulatory Assets [Line Items]
Regulatory assets-current	[14]	226	226
Regulatory assets-noncurrent	[14]	56	226
Derivatives
Regulatory Assets [Line Items]
Regulatory assets-current	[15]	375	112
Regulatory assets-noncurrent	[15]	562	35
Derivatives | Virginia Electric and Power Company
Regulatory Assets [Line Items]
Regulatory assets-current	[15]	369	105
Regulatory assets-noncurrent	[15]	453	34
Other
Regulatory Assets [Line Items]
Regulatory assets-current		236	177
Regulatory assets-noncurrent		525	584
Other | Virginia Electric and Power Company
Regulatory Assets [Line Items]
Regulatory assets-current		70	44
Regulatory assets-noncurrent		137	145
Unrecognized Pension and Other Postretirement Benefit Costs
Regulatory Assets [Line Items]
Regulatory assets-noncurrent	[16]	549	548
Deferred project costs for gas utilities
Regulatory Assets [Line Items]
Regulatory assets-noncurrent	[5]	693	675
Interest rate hedges
Regulatory Assets [Line Items]
Regulatory assets-noncurrent	[17]	170	899
Interest rate hedges | Virginia Electric and Power Company
Regulatory Assets [Line Items]
Regulatory assets-noncurrent	[18]		604
AROs and related funding
Regulatory Assets [Line Items]
Regulatory assets-noncurrent	[19]	$ 409	329
Amortization period for deferred costs		105 years
Deferred Project Costs | Maximum
Regulatory Assets [Line Items]
Amortization period for deferred costs		18 months
Deferred Project Costs | Virginia Electric and Power Company | Maximum
Regulatory Assets [Line Items]
Amortization period for deferred costs		18 months
Cost of Fuel Filing
Regulatory Assets [Line Items]
Increase/decrease in Regulatory Assets/Liabilities		$ 66
Deferred rider costs | Virginia Electric and Power Company
Regulatory Assets [Line Items]
Regulatory assets-current	[20]	149	72
Regulatory assets-noncurrent	[20]	$ 312	$ 489
[1]Dominion Energy’s Consolidated Balance Sheet at December 31, 2021 has been derived from the audited Consolidated Balance Sheet at that date.[2]Virginia Power’s Consolidated Balance Sheet at December 31, 2021 has been derived from the audited Consolidated Balance Sheet at that date.[3]Reflects deferred fuel expenses for the Virginia, North Carolina and South Carolina jurisdictions of Dominion Energy’s electric generation operations. Reflects a $66 million reduction recorded in the first quarter of 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[4]Reflects deferred fuel expenses for the Virginia and North Carolina jurisdictions of Virginia Power’s generation operations. See Note 13 for additional information.[5]Primarily .

Regulatory Assets and Liabili_4

Regulatory Assets and Liabilities (Schedule of Regulatory Liabilities) (Detail) - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2022	Dec. 31, 2021
Regulatory Liabilities [Line Items]
Regulatory liabilities-current		$ 1,019	$ 986	[1]
Regulatory liabilities-noncurrent		10,042	10,713	[1]
Total regulatory liabilities		11,061	11,699
Virginia Electric and Power Company
Regulatory Liabilities [Line Items]
Regulatory liabilities-current		648	647	[2]
Regulatory liabilities-noncurrent		5,269	5,740	[2]
Total regulatory liabilities		$ 5,917	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	[3]	$ 181	181
Regulatory liabilities-noncurrent	[3]	2,409	2,331
Provision for future cost of removal and AROs | Virginia Electric and Power Company
Regulatory Liabilities [Line Items]
Regulatory liabilities-current	[4]	154	154
Reserve for refunds and rate credits to electric utility customers
Regulatory Liabilities [Line Items]
Regulatory liabilities-current	[5]	129	420
Regulatory liabilities-noncurrent	[5]	358	448
Income taxes refundable through future rates
Regulatory Liabilities [Line Items]
Regulatory liabilities-current	[6]	147	153
Regulatory liabilities-noncurrent	[6]	4,096	4,260
Income taxes refundable through future rates | Virginia Electric and Power Company
Regulatory Liabilities [Line Items]
Regulatory liabilities-current	[7]	63	63
Regulatory liabilities-noncurrent	[7]	2,280	2,335
Monetization of guarantee settlement
Regulatory Liabilities [Line Items]
Regulatory liabilities-current	[8]	67	67
Regulatory liabilities-noncurrent	[8]	$ 719	831
Electric service customers over period		20 years
Derivative Liabilities
Regulatory Liabilities [Line Items]
Regulatory liabilities-current	[9]	$ 325	69
Regulatory liabilities-noncurrent	[9]	227	169
Derivative Liabilities | Virginia Electric and Power Company
Regulatory Liabilities [Line Items]
Regulatory liabilities-current	[9]	265	51
Other
Regulatory Liabilities [Line Items]
Regulatory liabilities-current		170	96
Regulatory liabilities-noncurrent		191	144
Other | Virginia Electric and Power Company
Regulatory Liabilities [Line Items]
Regulatory liabilities-current		139	73
Regulatory liabilities-noncurrent		167	179
Nuclear decommissioning trust
Regulatory Liabilities [Line Items]
Regulatory liabilities-noncurrent	[10]	1,532	2,158
Nuclear decommissioning trust | Virginia Electric and Power Company
Regulatory Liabilities [Line Items]
Regulatory liabilities-noncurrent	[11]	1,532	2,158
Interest rate hedges
Regulatory Liabilities [Line Items]
Regulatory liabilities-noncurrent	[12]	202	67
Interest rate hedges | Virginia Electric and Power Company
Regulatory Liabilities [Line Items]
Regulatory liabilities-noncurrent	[13]	202
Unrecognized Pension and Other Postretirement Benefit Costs
Regulatory Liabilities [Line Items]
Regulatory liabilities-noncurrent	[14]	177	200
Overrecovered Other Postretirement Benefit Costs
Regulatory Liabilities [Line Items]
Regulatory liabilities-noncurrent	[15]	131	105
Reserve for refunds to Virginia electric customers | Virginia Electric and Power Company
Regulatory Liabilities [Line Items]
Regulatory liabilities-current	[16]	27	306
Regulatory liabilities-noncurrent	[16]	6	25
Provision For Future Cost Of Removal | Virginia Electric and Power Company
Regulatory Liabilities [Line Items]
Regulatory liabilities-noncurrent	[4]	$ 1,082	$ 1,043
[1]Dominion Energy’s Consolidated Balance Sheet at December 31, 2021 has been derived from the audited Consolidated Balance Sheet at that date.[2]Virginia Power’s Consolidated Balance Sheet at December 31, 2021 has been derived from the audited Consolidated Balance Sheet at that date.[3]Rates charged to customers by Dominion Energy’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.[4]Rates charged to customers by 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.[5]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. See Notes 3 and 13 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021 for additional information. 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 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021 for additional information.[6]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.[7]Amounts recorded to pass the effect of reduced income taxes from the 2017 Tax Reform Act to customers in future periods, which will 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.[8]Reflects 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. See Note 3 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021 for additional information.[9]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.[10]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 Dominion Energy’s utility nuclear generation stations, in excess of the related AROs.[11]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) for the future decommissioning of Virginia Power’s utility nuclear generation stations, in excess of the related AROs.

Regulatory Assets and Liabili_5

Regulatory Assets and Liabilities (Narrative) (Detail) $ in Billions	9 Months Ended
	Sep. 30, 2022 USD ($)
Public Utilities General Disclosures [Line Items]
Regulatory assets not expect to earn return	$ 4.8
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	$ 3.3
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

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 ($)

Sep. 30, 2021 USD ($) MW

Jul. 31, 2021 USD ($)

Sep. 30, 2020 USD ($) mi

Sep. 30, 2022 USD ($)

Jun. 30, 2022 USD ($)

Mar. 31, 2022 USD ($)

Sep. 30, 2021 USD ($)

Sep. 30, 2022 USD ($)

Sep. 30, 2021 USD ($)

Mar. 31, 2023 USD ($)

Dec. 31, 2021 USD ($)

Dec. 31, 2020 USD ($)

Dec. 31, 2019 USD ($)

Dec. 31, 2008

Oct. 31, 2021 USD ($)

Public Utilities General Disclosures [Line Items]

Depreciation, depletion and amortization

$ 727

$ 621

$ 2,120

$ 1,833

Regulatory liabilities

$ 1,019

1,019

1,019

$ 986

[1]

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

Public Utilities General Disclosures [Line Items]

Increase in gas cost

126

$ 56

Ohio Regulation | PIR Program

Public Utilities General Disclosures [Line Items]

Percentage of pipeline system replaced

25%

Increases of annual capital expenditures percentage

3%

Total gross plant investment estimated cost

225

Proposed revenue requirement

273

Cumulative gross plant investment estimated cost

2,200

Ohio Regulation | CEP Program

Public Utilities General Disclosures [Line Items]

Total gross plant investment estimated cost

146

$ 231

$ 231

Proposed revenue requirement

131

118

118

Cumulative gross plant investment estimated cost

1,100

$ 952

$ 952

Ohio Regulation | PIPP Plus Program

Public Utilities General Disclosures [Line Items]

Projected deferred program costs

22

Accumulated arrearages

4

Ohio Regulation | UEX Rider

Public Utilities General Disclosures [Line Items]

Actual revenue requirement

$ 20

Public utilities, under-recovered accumulated bad debt expense

$ 7

Ohio Regulation | UEX Rider | Forecast

Public Utilities General Disclosures [Line Items]

Recovery of bad debt expense

$ 13

Virginia Electric and Power Company

Public Utilities General Disclosures [Line Items]

Proposed cost of project

$ 3,900

Depreciation, depletion and amortization

451

343

1,305

990

Regulatory liabilities

648

648

$ 648

$ 647

[2]

Virginia Electric and Power Company | Rider DSM

Public Utilities General Disclosures [Line Items]

Increase in customer usage tracker

$ 46

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

Virginia Electric and Power Company | Utility Scale Solar

Public Utilities General Disclosures [Line Items]

Proposed cost of project

$ 1,400

$ 1,400

$ 1,400

Targeted capacity provided by legislation | MW

661

Virginia Electric and Power Company | Utility Scale Solar | Subsequent Event

Public Utilities General Disclosures [Line Items]

Proposed cost of project

$ 1,200

Targeted capacity provided by legislation | MW

474

Virginia Electric and Power Company | Energy Storage

Public Utilities General Disclosures [Line Items]

Targeted capacity provided by legislation | MW

70

Virginia Electric and Power Company | Energy Storage | Subsequent Event

Public Utilities General Disclosures [Line Items]

Targeted capacity provided by legislation | MW

16

Virginia Electric and Power Company | CVOW Commercial Project

Public Utilities General Disclosures [Line Items]

Estimated cost

$ 1,100

Virginia Electric and Power Company | CVOW Commercial Project | Subsequent Event

Public Utilities General Disclosures [Line Items]

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]

Depreciation, depletion and amortization

33

Depreciation and amortization after tax

$ 25

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 (benefits)

$ 180

Asset impairment charges after tax

134

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 | Annual Fuel Factor | Maximum

Public Utilities General Disclosures [Line Items]

Increase (decrease) in revenue requirement

1,300

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

Public Utilities General Disclosures [Line Items]

Increase (decrease) in revenue requirement

1,200

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

$ 60

Application date

2022-04

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

Public Utilities General Disclosures [Line Items]

Rate year beginning

2022-05

Application date

2022-04

Regulatory liabilities

$ 66

Increase (decrease) in annual base fuel component recoveries

$ 399

$ 143

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

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

Public Utilities General Disclosures [Line Items]

Increase (decrease) in base rate revenue requirement

$ 16

Base rate increase in revenue required

$ 12

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

Public Utilities General Disclosures [Line Items]

Total revenue requirement approved

549

Approved increase in revenue required

125

Hope Gas Inc | West Virginia Regulation | West Virginia Base Rate Case

Public Utilities General Disclosures [Line Items]

Increase (decrease) in revenue requirement

$ 28

Approved increase in revenue required

$ 13

Public Utilities distribution infrastructure gathering assets | mi

2,000

Return of equity percentage

10.25%

Approved return on equity percentage

9.54%

9.45%

Questar Gas Company | Utah Regulation

Public Utilities General Disclosures [Line Items]

Increase in gas cost

$ 94

Questar Gas Company | Utah Regulation | Base Rate Case

Public Utilities General Disclosures [Line Items]

Increase (decrease) in revenue requirement

$ 71

Percentage of earned return

10.30%

Authorized return percentage

9.50%

Questar Gas Company | Utah Regulation | Subsequent Event

Public Utilities General Disclosures [Line Items]

Increase in gas cost

$ 128

[1]Dominion Energy’s Consolidated Balance Sheet at December 31, 2021 has been derived from the audited Consolidated Balance Sheet at that date.[2]Virginia Power’s Consolidated Balance Sheet at December 31, 2021 has been derived from the audited Consolidated Balance Sheet at that date.

Regulatory Matters - Schedule o

Regulatory Matters - Schedule of Additional Significant Riders Associated with Virginia Power Projects (Detail) - Virginia Electric and Power Company $ in Millions	9 Months Ended
	Sep. 30, 2022 USD ($)
Rider B
Public Utilities General Disclosures [Line Items]
Application Date	2022-06
Approval Date	Pending
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	Pending
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 B W One
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 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 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 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 RGGI
Public Utilities General Disclosures [Line Items]
Application Date	2021-12
Approval Date	Withdrawn
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 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 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 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 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 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 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 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 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 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 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 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 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	2024-04
Total Revenue Requirement (millions)	$ 109
Increase (decrease) in revenue requirement	$ 3
DSM Riders [Member]
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

Regulatory Matters - Schedule_2

Regulatory Matters - Schedule of Additional Significant Riders Associated with Virginia Power Projects (Parenthetical) (Detail) - Virginia Electric and Power Company $ in Millions	1 Months Ended					9 Months Ended
	Jun. 30, 2022 USD ($)	May 31, 2022 USD ($)	Dec. 31, 2021 USD ($) program	Sep. 30, 2021 USD ($)	Jun. 30, 2021 USD ($)	Sep. 30, 2022 USD ($)
Rider SNA
Public Utilities General Disclosures [Line Items]
Total revenue requirement						$ 107
Rider T1
Public Utilities General Disclosures [Line Items]
Total revenue requirement						706
Rider U
Public Utilities General Disclosures [Line Items]
Total revenue requirement						$ 95
Virginia Regulation | Previous Phase
Public Utilities General Disclosures [Line Items]
Projected capital investment	$ 74				$ 60
Virginia Regulation | Rider SNA | Operating Segments | Transmission Component Of Virginia Powers
Public Utilities General Disclosures [Line Items]
Projected capital investment				$ 1,200
Virginia Regulation | Rider T1 | Operating Segments
Public Utilities General Disclosures [Line Items]
Total revenue requirement		$ 224
Virginia Regulation | Rider T1 | Operating Segments | Transmission Component Of Virginia Powers
Public Utilities General Disclosures [Line Items]
Total revenue requirement		$ 482
Virginia Regulation | Rider U | Previous Phase
Public Utilities General Disclosures [Line Items]
Projected capital investment					$ 35
Virginia Regulation | Rider DSM
Public Utilities General Disclosures [Line Items]
Amount of cost cap recovery			$ 140
Public utilities energy efficiency program cost exceed percentage			15%
Virginia Regulation | Rider DSM | Operating Segments | Energy Efficiency Program
Public Utilities General Disclosures [Line Items]
Number of new energy efficiency programs | program			9

Regulatory Matters - Summary of

Regulatory Matters - Summary of Virginia Power Electric Transmission Project Applied (Detail) - Virginia Electric and Power Company $ in Millions	9 Months Ended
	Sep. 30, 2022 USD ($) kV mi
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
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
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
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 switching stations, substation, 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

Leases (Narrative) (Detail)

Leases (Narrative) (Detail) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2019	Jul. 31, 2016
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			$ 71
Leasing arrangement, charge after tax			$ 53
Lease effective termination date			2021-04
Power Purchase Arrangement
Leases Disclosure [Line Items]
Rental revenue	$ 6	$ 58		$ 17	$ 147
Depreciation expense	$ 9	$ 29		$ 26	$ 87

Variable Interest Entities - (N

Variable Interest Entities - (Narrative) (Detail) - Virginia Electric and Power Company - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Variable Interest Entity [Line Items]
Payables to affiliates	$ 168		$ 168		$ 121	[1]
Variable Interest Entity, Not Primary Beneficiary | DES
Variable Interest Entity [Line Items]
Shared Services Purchased	96	$ 89	290	$ 278
Payables to affiliates	$ 27		$ 27		$ 20
[1]Virginia Power’s Consolidated Balance Sheet at December 31, 2021 has been derived from the audited Consolidated Balance Sheet at that date.

Significant Financing Transac_3

Significant Financing Transactions (Narrative) (Detail) - USD ($)				1 Months Ended									3 Months Ended			9 Months Ended
		Sep. 01, 2022	May 05, 2022	Oct. 31, 2022	Aug. 31, 2022	Jun. 30, 2022	May 31, 2022	Apr. 30, 2022	Jan. 31, 2022	Aug. 31, 2021	Jul. 31, 2021	Jun. 30, 2020	Sep. 30, 2022	Aug. 31, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021		Nov. 30, 2020	Jul. 31, 2020
Debt Instrument [Line Items]
Facility Limit	[1]												$ 6,000,000,000			$ 6,000,000,000
Short-term debt													2,943,000,000			2,943,000,000		$ 2,314,000,000	[2]
Debt repurchased value					$ 154,000,000								$ 149,000,000	$ 154,000,000		$ 149,000,000
Preferred stock shares authorized													20,000,000			20,000,000
Stock purchase contract liability																		44,000,000
Corporate units stock purchase contract liability payments																$ 44,000,000	$ 64,000,000
Issuance of common stock																1,744,000,000	144,000,000
Issuance of stock													$ 44,000,000		$ 195,000,000	$ 1,847,000,000	$ 292,000,000
Common Stock
Debt Instrument [Line Items]
Stock repurchased, shares																0
Issuance of stock (in shares)						400,000	900,000			600,000	1,400,000		1,000,000		3,000,000	23,000,000	4,000,000
Issuance of stock						$ 30,000,000	$ 72,000,000			$ 45,000,000	$ 104,000,000		$ 44,000,000		$ 195,000,000	$ 1,847,000,000	$ 292,000,000
Stock repurchase program, authorized amount																				$ 1,000,000,000	$ 3,000,000,000
2019 Series A Corporate Units
Debt Instrument [Line Items]
Short-term deposit							2,000,000,000
2019 Series A Corporate Units | Common Stock
Debt Instrument [Line Items]
Issuance of stock (in shares)						19,400,000
Issuance of stock						$ 1,600,000,000
2019 Series A Corporate Units | Maximum
Debt Instrument [Line Items]
Short-term deposit							2,000,000,000
2019 Series A Corporate Units | Minimum
Debt Instrument [Line Items]
Short-term deposit							$ 1,600,000,000
Series A Preferred Stock
Debt Instrument [Line Items]
Debt repurchased value													1,600,000,000			1,600,000,000
Recorded dividend															$ 7,000,000	$ 12,000,000	$ 21,000,000
Recorded dividends per share															$ 4.375	$ 7.292	$ 13.125
Interest expense													5,000,000			$ 7,000,000
Series A Preferred Stock | 2019 Series A Corporate Units
Debt Instrument [Line Items]
Stock repurchased, shares							1,600,000
Preferred stock dividend rate percentage							1.75%							1.75%
Preferred stock dividend rate increase percentage		6.75%
Series B Preferred Stock
Debt Instrument [Line Items]
Recorded dividend													$ 9,000,000		$ 9,000,000	$ 27,000,000	$ 27,000,000
Recorded dividends per share													$ 11.625		$ 11.625	$ 34.875	$ 34.875
Series C Preferred Stock
Debt Instrument [Line Items]
Recorded dividend													$ 11,000,000			$ 33,000,000
Recorded dividends per share													$ 10.875			$ 32.625
Interest Rate Swap
Debt Instrument [Line Items]
Derivative notional value												$ 2,000,000,000
Derivative maturity month and year												2024-12
Interest And Related Charges
Debt Instrument [Line Items]
Gain on early redemption of senior notes													$ 17,000,000			$ 17,000,000
Gain on early redemption of senior notes, after-tax													13,000,000			13,000,000
Subsequent Event
Debt Instrument [Line Items]
Debt repurchased value				$ 61,000,000
Various Programs
Debt Instrument [Line Items]
Issuance of common stock																$ 134,000,000	$ 292,000,000
Issuance of stock (in shares)																2,000,000	4,000,000
Floating Rate Demand Notes
Debt Instrument [Line Items]
Short-term debt													343,000,000			$ 343,000,000		431,000,000
Floating Rate Demand Notes | Shelf Registration for Sale of Demand Notes
Debt Instrument [Line Items]
Facility Limit																		3,000,000,000
DESC
Debt Instrument [Line Items]
Facility Limit													500,000,000			500,000,000
Questar Gas Company
Debt Instrument [Line Items]
Facility Limit													250,000,000			250,000,000
Questar Gas Company | Senior Notes Due in 2032 | Private Placement
Debt Instrument [Line Items]
Total Long-term Debt					$ 125,000,000									$ 125,000,000
Interest rate percentage					4.39%									4.39%
Debt maturity year					2032
Questar Gas Company | Senior Notes Due in 2052 | Private Placement
Debt Instrument [Line Items]
Total Long-term Debt					$ 125,000,000									$ 125,000,000
Interest rate percentage					4.70%									4.70%
Debt maturity year					2052
Virginia Electric and Power Company
Debt Instrument [Line Items]
Facility Limit	[3]												6,000,000,000			6,000,000,000
Short-term debt													$ 1,009,000,000			$ 1,009,000,000		$ 745,000,000	[4]
Interest rate percentage								1.65%
Aggregate outstanding principal								$ 138,000,000
Debt, maturity month and year								2024-05
Issuance of stock (in shares)													0		0	0	0
Virginia Electric and Power Company | Senior Notes Due in 2032
Debt Instrument [Line Items]
Total Long-term Debt									$ 600,000,000
Interest rate percentage									2.40%
Debt maturity year									2032
Virginia Electric and Power Company | Senior Notes Due in 2051
Debt Instrument [Line Items]
Total Long-term Debt									$ 400,000,000
Interest rate percentage									2.95%
Debt maturity year									2051
Virginia Electric and Power Company | Senior Notes Due in 2027
Debt Instrument [Line Items]
Total Long-term Debt							$ 600,000,000
Interest rate percentage							3.75%
Debt maturity year							2027
Virginia Electric and Power Company | Senior Notes Due in 2052
Debt Instrument [Line Items]
Total Long-term Debt							$ 600,000,000
Interest rate percentage							4.625%
Debt maturity year							2052
Dominion Energy
Debt Instrument [Line Items]
Preferred stock shares issued													1,800,000			1,800,000		3,400,000
Preferred stock shares outstanding													1,800,000			1,800,000		3,400,000
Dominion Energy | Series A Preferred Stock
Debt Instrument [Line Items]
Preferred stock shares issued																		1,600,000
Preferred stock shares outstanding																		1,600,000
Dominion Energy | Series B Preferred Stock
Debt Instrument [Line Items]
Preferred stock shares issued													800,000			800,000		800,000
Preferred stock shares outstanding													800,000			800,000		800,000
Dominion Energy | Series C Preferred Stock
Debt Instrument [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
Dominion Energy | Senior Notes Due in 2032
Debt Instrument [Line Items]
Total Long-term Debt					$ 400,000,000									$ 400,000,000
Interest rate percentage					4.35%									4.35%
Debt maturity year					2032
Dominion Energy | Senior Notes Due in 2052
Debt Instrument [Line Items]
Total Long-term Debt					$ 600,000,000									$ 600,000,000
Interest rate percentage					4.85%									4.85%
Debt maturity year					2052
Dominion Energy | Series 2003 due 2033 | Subsequent Event
Debt Instrument [Line Items]
Aggregate outstanding principal				$ 27,000,000
Debt instrument re-evaluation date				Oct. 31, 2024
Dominion Energy | Series 2003 due 2033 | Subsequent Event | Coupon Rate
Debt Instrument [Line Items]
Interest rate percentage				3.80%
East Ohio | Senior Notes Due in 2032 | Private Placement | Subsequent Event
Debt Instrument [Line Items]
Total Long-term Debt				$ 250,000,000
Interest rate percentage				6.19%
Debt maturity year				2032
East Ohio | Senior Notes Due in 2052 | Private Placement | Subsequent Event
Debt Instrument [Line Items]
Total Long-term Debt				$ 250,000,000
Interest rate percentage				6.38%
Debt maturity year				2052
Joint Revolving Credit Facility
Debt Instrument [Line Items]
Facility Limit													$ 6,000,000,000			$ 6,000,000,000
Letter of Credit
Debt Instrument [Line Items]
Facility Limit													2,000,000,000			2,000,000,000
Letter of Credit | Credit Facility, Maturing in June 2022
Debt Instrument [Line Items]
Facility Limit						30,000,000
Credit facility, outstanding amount													20,000,000			$ 20,000,000		$ 29,000,000
Line of credit facility, maturity date																Jun. 30, 2022
Line of credit facility, extended maturity date								Jun. 30, 2025
Letter of Credit | Amended and Restated Credit Facility
Debt Instrument [Line Items]
Line of 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			$ 2,000,000,000
Sustainability Revolving Credit Facility | Dominion Energy
Debt Instrument [Line Items]
Facility Limit			$ 900,000,000
Debt maturity year			2024
Sustainability Revolving Credit Facility | Dominion Energy | Environmental Sustainability And Social Investment Initiatives
Debt Instrument [Line Items]
Proceeds from borrowings			$ 450,000,000
Sustainability Revolving Credit Facility | Dominion Energy | General Corporate Purposes
Debt Instrument [Line Items]
Proceeds from borrowings			$ 450,000,000
Repayments of borrowings						$ 450,000,000
[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 September 30, 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.

Significant Financing Transac_4

Significant Financing Transactions (Commercial Paper, Bank Loans and Letters of Credit Outstanding) (Detail)	Sep. 30, 2022 USD ($)
Line of Credit Facility [Line Items]
Facility Limit	$ 6,000,000,000	[1]
Outstanding Commercial Paper	2,600,000,000	[1]
Outstanding Letters of Credit	251,000,000	[1]
Facility Capacity Available	3,149,000,000	[1]
Virginia Electric and Power Company
Line of Credit Facility [Line Items]
Facility Limit	6,000,000,000	[2]
Outstanding Commercial Paper	1,009,000,000	[2]
Outstanding Letters of Credit	$ 180,000,000	[2]
[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 September 30, 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.

Significant Financing Transac_5

Significant Financing Transactions (Commercial Paper, Bank Loans and Letters of Credit Outstanding) (Parenthetical) (Detail)	Sep. 30, 2022 USD ($)
Line of Credit Facility [Line Items]
Facility Limit	$ 6,000,000,000	[1]
Virginia Electric and Power Company
Line of Credit Facility [Line Items]
Facility Limit	6,000,000,000	[2]
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 September 30, 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.

Commitments and Contingencies_2

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

1 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

Sep. 30, 2022 USD ($)

Jun. 30, 2022 USD ($) shares

May 31, 2022 shares

Aug. 31, 2021 shares

Jun. 30, 2021 USD ($)

Dec. 31, 2020 USD ($)

Oct. 31, 2020

Jun. 30, 2018 USD ($)

Aug. 31, 2017 USD ($)

Apr. 30, 2017 Petition

Aug. 31, 2016 T

Sep. 30, 2022 USD ($)

Jun. 30, 2022 site

Sep. 30, 2021 USD ($)

Sep. 30, 2022 USD ($) Indicator Facility site gal

Sep. 30, 2021 USD ($)

Dec. 31, 2021 USD ($)

Loss Contingencies [Line Items]

Gain on sales of assets

$ 27

$ 3

$ (581)

$ 2

Gain on sales of assets after tax

781

$ 601

1,021

1,850

SCANA

Loss Contingencies [Line Items]

Impairment of assets and other charges

100

Impairment of assets and other charges, after tax

$ 75

Utilization of insurance proceeds for settlements.

$ 33

Litigation settlement amount through stock issuance | shares

0.4

Cash payment

$ 2

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 | Other Current Liabilities

Loss Contingencies [Line Items]

Reserves for SCANA legal proceedings

$ 96

96

96

$ 274

SCANA | Other Receivables

Loss Contingencies [Line Items]

Insurance receivables

68

68

$ 68

118

Virginia Electric and Power Company | EPA and State Regulatory Agencies

Loss Contingencies [Line Items]

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

3

Hydroelectric Facilities | EPA and State Regulatory Agencies

Loss Contingencies [Line Items]

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

8

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%

Gain on expected conveyed value of utility and non-utility properties upon approval

$ 20

Non-utility property with fair value

28

Gain on sales of assets

18

Certain additional utility property

3

3

$ 3

Gain on sales of assets after tax

14

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 | DESC | SCDOR | Common Stock

Loss Contingencies [Line Items]

Initial litigation settlement through stock issuance | shares

0.9

0.6

Dominion Energy South Carolina Inc | Minimum | SCDOR

Loss Contingencies [Line Items]

Initial litigation settlement amount through stock issuance

$ 43

Unfavorable Regulatory Action | EPA

Loss Contingencies [Line Items]

Electric generating station facilities heightened entrainment analysis per day | gal

125,000,000

Personal Injury or Wrong Death Cases | SCANA

Loss Contingencies [Line Items]

Reserves for SCANA legal proceedings

68

68

$ 68

85

Insurance receivables

$ 68

$ 68

$ 68

85

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 | Minimum

Loss Contingencies [Line Items]

Electric generating stations with water withdrawals per day | gal

2,000,000

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

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

Loss Contingencies [Line Items]

Loss contingencies individual circumstances period

2021

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

Loss Contingencies [Line Items]

Loss contingencies individual circumstances period

2028

CWA | Unfavorable Regulatory Action | Virginia Electric and Power Company

Loss Contingencies [Line Items]

Number of facilities that are subject to final regulations | Facility

9

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

Number of additional sites which are not under investigation | site

12

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

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

Loss Contingencies [Line Items]

Number of sites with remediation plans | site

1

Number of additional sites which are not under investigation | site

2

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

Loss Contingencies [Line Items]

Environmental remediation reserves

$ 25

$ 25

Commitments and Contingencies_3

Commitments and Contingencies (Nuclear Insurance) (Detail) - USD ($) $ in Millions	1 Months Ended		3 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Jun. 30, 2022	Mar. 31, 2022
Loss Contingencies [Line Items]
Maximum assessment for premiums on insurance policy			$ 65
Summer
Loss Contingencies [Line Items]
NRC minimum requirement		$ 1,060	1,060
Property insurance coverage				$ 2,750
Summer | DESC | European Mutual Association for Nuclear Insurance
Loss Contingencies [Line Items]
Property damage and outage costs coverage from non-nuclear origin event		1	$ 1	$ 415
Secondary Financial Protection Program | Nuclear Plant
Loss Contingencies [Line Items]
Maximum liability protection per nuclear incident amount	$ 13,700	$ 13,500

Commitments and Contingencies_4

Commitments and Contingencies (Guarantees, Surety Bonds and Letters of Credit) (Detail)	9 Months Ended
	Sep. 30, 2022 USD ($) Guarantee
Guarantee Obligations [Line Items]
Guarantee liability	$ 4,328,000,000	[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	248,000,000
Surety Bond | Virginia Electric and Power Company
Guarantee Obligations [Line Items]
Guarantee liability	172,000,000
Financial Standby Letter of Credit
Guarantee Obligations [Line Items]
Guarantee liability	$ 251,000,000
[1] Excludes Dominion Energy’s guarantee of an offshore wind installation vessel discussed in Note 15 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021 . five-year

Commitments and Contingencies -

Commitments and Contingencies - Schedule of Subsidiary Guarantees (Detail)	Sep. 30, 2022 USD ($)
Guarantee Obligations [Line Items]
Maximum Exposure	$ 4,328,000,000	[1],[2]
Commodity Transactions
Guarantee Obligations [Line Items]
Maximum Exposure	2,514,000,000	[3]
Nuclear Plant
Guarantee Obligations [Line Items]
Maximum Exposure	243,000,000	[4]
Solar
Guarantee Obligations [Line Items]
Maximum Exposure	303,000,000	[5]
Other
Guarantee Obligations [Line Items]
Maximum Exposure	$ 1,268,000,000	[6]
[1] Excludes Dominion Energy’s guarantee of an offshore wind installation vessel discussed in Note 15 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2021 . five-year

Commitments and Contingencies_5

Commitments and Contingencies - Schedule of Subsidiary Guarantees (Parenthetical) (Detail) - Lessor - New Corporate Office - Agreement with Lessor to Construct and Lease Corporate Office Property - USD ($)	1 Months Ended
	Jul. 31, 2016	Sep. 30, 2022	Dec. 31, 2019
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

Credit Risk (Narrative) (Detail

Credit Risk (Narrative) (Detail)	9 Months Ended
	Sep. 30, 2022 USD ($) counterparty	Dec. 31, 2021 USD ($)
Concentration Risk and Guarantor Obligations [Line Items]
Credit exposure	$ 133,000,000
Additional collateral to be posted if the credit related contingent features were triggered	189,000,000	$ 31,000,000
Collateral derivatives with credit-related contingent provision in a liability position	124,000,000	66,000,000
Letter of credit as collateral posted for derivatives in liability position	53,000,000
Aggregate fair value of all derivative instruments with credit contingent provisions that are in a liability position	313,000,000	97,000,000
Virginia Electric and Power Company
Concentration Risk and Guarantor Obligations [Line Items]
Credit exposure	17,000,000
Additional collateral to be posted if the credit related contingent features were triggered	58,000,000	22,000,000
Collateral derivatives with credit-related contingent provision in a liability position	121,000,000	54,000,000
Letter of credit as collateral posted for derivatives in liability position	53,000,000
Aggregate fair value of all derivative instruments with credit contingent provisions that are in a liability position	$ 179,000,000	$ 76,000,000
Credit Concentration Risk
Concentration Risk and Guarantor Obligations [Line Items]
Number of counterparties | counterparty	0
Amount of exposure for single counterparty	$ 45,000,000
Credit Concentration Risk | Wholesale Customers | Sales Revenue, Net | Virginia Electric and Power Company
Concentration Risk and Guarantor Obligations [Line Items]
Number of counterparties | counterparty	0
Amount of exposure for single counterparty	$ 4,000,000
Credit Concentration Risk | Investment Grade | Investment Grade Counterparty
Concentration Risk and Guarantor Obligations [Line Items]
Concentration risk, percentage (percentage)	88%
Credit Concentration Risk | Investment Grade | Investment Grade Counterparty | Virginia Electric and Power Company
Concentration Risk and Guarantor Obligations [Line Items]
Concentration risk, percentage (percentage)	78%

Related-Party Transactions (Nar

Related-Party Transactions (Narrative) (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Related Party Transaction [Line Items]
Derivative assets	$ 2,469,000,000		$ 2,469,000,000		$ 613,000,000
Derivative liabilities	2,371,000,000		2,371,000,000		868,000,000
Virginia Electric and Power Company
Related Party Transaction [Line Items]
Derivative assets	961,000,000		961,000,000		300,000,000
Derivative liabilities	917,000,000		917,000,000		470,000,000
Payable to affiliates	784,000,000		784,000,000		699,000,000	[1]
Outstanding borrowings, net of repayments, under money pool for non-regulated subsidiaries	$ 0		$ 0		0
Issuance of common stock to Dominion	0	0	0	0
Virginia Electric and Power Company | Pension Benefits | Amounts Associated With Dominion Pension Plan
Related Party Transaction [Line Items]
Amounts due to Dominion, noncurrent	$ 576,000,000		$ 576,000,000		522,000,000
Payment to be paid to Dominion, in 2022	175,000,000		175,000,000
Virginia Electric and Power Company | Medical Coverage for Local retirees | Amounts Associated with the Dominion Retiree Health and Welfare Plan
Related Party Transaction [Line Items]
Amounts due from Dominion, noncurrent	493,000,000		493,000,000		431,000,000
Virginia Electric and Power Company | Affiliated Entity
Related Party Transaction [Line Items]
Derivative assets	64,000,000		64,000,000		29,000,000
Derivative liabilities	3,000,000		3,000,000		6,000,000
Virginia Electric and Power Company | Principal Owner | Short-Term Borrowing Arrangements
Related Party Transaction [Line Items]
Payable to affiliates	$ 784,000,000		$ 784,000,000		$ 699,000,000
[1]Virginia Power’s Consolidated Balance Sheet at December 31, 2021 has been derived from the audited Consolidated Balance Sheet at that date.

Related-Party Transactions (Det

Related-Party Transactions (Detail) - Virginia Electric and Power Company - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Related Party Transaction [Line Items]
Commodity purchases from affiliates		$ 515	$ 219	$ 1,099	$ 526
Services provided by affiliates	[1]	125	116	378	363
Affiliated Entity
Related Party Transaction [Line Items]
Services provided to affiliates		$ 4	$ 6	$ 13	$ 15
[1]Includes capitalized expenditures of $44 million and $39 million for the three months ended September 30, 2022 and 2021, respectively, and $122 million and $121 million for the nine months ended September 30, 2022 and 2021, respectively.

Related-Party Transactions (Par

Related-Party Transactions (Parenthetical) (Detail) - Virginia Electric and Power Company - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Related Party Transaction [Line Items]
Capital expenditures			$ 3,322	$ 2,525
Services provided by affiliates | Affiliated Entity
Related Party Transaction [Line Items]
Capital expenditures	$ 44	$ 39	$ 122	$ 121

Employee Benefit Plans (Net Per

Employee Benefit Plans (Net Periodic Benefit Cost (Credit)) (Detail) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost		$ 35	$ 43	$ 106	$ 127
Interest cost		83	80	250	238
Expected return on plan assets		(221)	(209)	(667)	(625)
Amortization of net actuarial loss		39	48	119	145
Settlements and curtailment	[1]				5
Net periodic benefit (credit) cost		(64)	(38)	(192)	(110)
Other Postretirement Benefits Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost		5	6	16	18
Interest cost		11	11	34	35
Expected return on plan assets		(47)	(43)	(143)	(130)
Amortization of prior service cost (credit)		(10)	(11)	(29)	(32)
Amortization of net actuarial loss			1	(1)	3
Settlements and curtailment	[1]	(8)		(8)
Net periodic benefit (credit) cost		$ (49)	$ (36)	$ (131)	$ (106)
[1]2022 amounts relate primarily to Dominion Energy’s sale of Hope. 2021 amounts relate primarily to the Dominion Energy executive nonqualified pension plan.

Employee Benefit Plans (Narrati

Employee Benefit Plans (Narrative) (Detail) - USD ($)	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2022	Dec. 31, 2022
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Contributions to qualified defined benefit pension plans and OPEB plans	$ 0	$ 0
Other Postretirement Benefits Plan | Forecast
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Contribution to voluntary employees beneficiary association			$ 0

Operating Segments - Dominion E

Operating Segments - Dominion Energy (Narrative) (Detail) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting Information [Line Items]
Gain (loss) on investments	$ (658)	$ 370
Operating Segments
Segment Reporting Information [Line Items]
After- tax net benefits (expenses)	(1,800)	(617)
Operating Segments | Nuclear Decommissioning Trust Funds
Segment Reporting Information [Line Items]
Gain (loss) on investments	(691)	309
Gain (loss) on investments, after tax	(536)	248
Corporate and Other | Operating Segments
Segment Reporting Information [Line Items]
After- tax net benefits (expenses)	(1,700)	(642)
After- tax net benefits (expenses) for specific items	(1,600)	(492)
Contracted Assets | Operating Segments
Segment Reporting Information [Line Items]
Loss associated with sale of Kewaunee	649
Loss associated with sale of Kewaunee, after tax	513
Loss related to economic hedging activities	135	447
Loss related to economic hedging activities after tax	94	336
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
Contracted Assets | Operating Segments | Nuclear Decommissioning Trust Funds
Segment Reporting Information [Line Items]
Gain (loss) on investments, after tax	(465)	218
Dominion Energy Virginia | Operating Segments
Segment Reporting Information [Line Items]
Charge associated with storm damage and service restoration	94	68
Charge associated with storm damage and service restoration, after tax	70	50
Charge for amortization of a regulatory asset, 2021 Triennial Review	183
Charge for amortization of a regulatory asset, 2021 Triennial Review, after tax	136
Charge in connection with proposed comprehensive settlement agreement for fuel expenses	191
Charge in connection with proposed comprehensive settlement agreement for fuel expenses, after-tax	142
Charge for RGGI compliance cost	213
Charge for RGGI compliance cost, after tax	159
Charges for Dismantling cost	60
Charges for Dismantling cost, after tax	45
Benefit for change in CCRO reserve		130
Benefit for change in CCRO reserve, after tax		97
Charges associated with the settlement of the 2021 Triennial Review		119
Charges associated with the settlement of the 2021 Triennial Review, after tax		89
Charges associated with budget process related to customer arrears		77
Charges associated with budget process related to customer arrears, after tax		57
Loss from unbilled revenue reduction		151
Loss from unbilled revenue reduction, after tax		112
Dominion Energy Virginia | Operating Segments | Nuclear Decommissioning Trust Funds
Segment Reporting Information [Line Items]
Gain (loss) on investments, after tax	(71)	30
Gas Distribution | Operating Segments
Segment Reporting Information [Line Items]
Benefit (loss) associated with sale of hope	17
Benefit (loss) associated with sale of hope after tax	$ (82)
Dominion Energy South Carolina Inc | Operating Segments
Segment Reporting Information [Line Items]
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
Litigation settlement expense		70
Litigation settlement expense, after tax		$ 53

Operating Segments (Schedule of

Operating Segments (Schedule of Segment Reporting Information, by Segment) (Detail) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting Information [Line Items]
Operating Revenue		$ 4,386	$ 3,176	$ 12,261	$ 10,084
Net Income (Loss) from discontinued operations including noncontrolling interest	[1]	(3)	65	15	119
Net income (loss) attributable to Dominion Energy		778	654	1,036	1,947
Operating Segments
Segment Reporting Information [Line Items]
Operating Revenue		4,386	3,175	12,261	10,081
Adjustments & Eliminations
Segment Reporting Information [Line Items]
Operating Revenue		0	18	0	46
Net Income (Loss) from discontinued operations including noncontrolling interest		0	0	0	0
Net income (loss) attributable to Dominion Energy		0	0	0	0
Intersegment revenue
Segment Reporting Information [Line Items]
Operating Revenue		0	1	0	3
Adjustments & Eliminations
Segment Reporting Information [Line Items]
Operating Revenue		(228)	(236)	(699)	(737)
Eliminations
Segment Reporting Information [Line Items]
Operating Revenue		(228)	(218)	(699)	(691)
Dominion Energy Virginia
Segment Reporting Information [Line Items]
Operating Revenue		2,867	2,330	7,208	6,062
Dominion Energy Virginia | Operating Segments
Segment Reporting Information [Line Items]
Operating Revenue		2,871	2,333	7,218	6,072
Net Income (Loss) from discontinued operations including noncontrolling interest		0	0	0	0
Net income (loss) attributable to Dominion Energy		617	599	1,575	1,464
Dominion Energy Virginia | Intersegment revenue
Segment Reporting Information [Line Items]
Operating Revenue		(4)	(3)	(10)	(10)
Gas Distribution
Segment Reporting Information [Line Items]
Operating Revenue		437	373	2,232	1,804
Gas Distribution | Operating Segments
Segment Reporting Information [Line Items]
Operating Revenue		436	372	2,230	1,800
Net Income (Loss) from discontinued operations including noncontrolling interest		0	0	0	0
Net income (loss) attributable to Dominion Energy		67	69	486	415
Gas Distribution | Intersegment revenue
Segment Reporting Information [Line Items]
Operating Revenue		1	1	2	4
Dominion Energy South Carolina
Segment Reporting Information [Line Items]
Operating Revenue		917	800	2,531	2,235
Dominion Energy South Carolina | Operating Segments
Segment Reporting Information [Line Items]
Operating Revenue		915	799	2,525	2,230
Net Income (Loss) from discontinued operations including noncontrolling interest		0	0	0	0
Net income (loss) attributable to Dominion Energy		175	151	408	337
Dominion Energy South Carolina | Intersegment revenue
Segment Reporting Information [Line Items]
Operating Revenue		2	1	6	5
Contracted Assets
Segment Reporting Information [Line Items]
Operating Revenue		244	282	660	845
Contracted Assets | Operating Segments
Segment Reporting Information [Line Items]
Operating Revenue		239	265	645	790
Net Income (Loss) from discontinued operations including noncontrolling interest		0	0	0	0
Net income (loss) attributable to Dominion Energy		121	119	242	373
Contracted Assets | Intersegment revenue
Segment Reporting Information [Line Items]
Operating Revenue		5	17	15	55
Corporate and Other
Segment Reporting Information [Line Items]
Operating Revenue		149	(391)	329	(171)
Corporate and Other | Operating Segments
Segment Reporting Information [Line Items]
Operating Revenue		(75)	(612)	(357)	(857)
Net Income (Loss) from discontinued operations including noncontrolling interest		(3)	65	15	119
Net income (loss) attributable to Dominion Energy		(202)	(284)	(1,675)	(642)
Corporate and Other | Intersegment revenue
Segment Reporting Information [Line Items]
Operating Revenue		$ 224	$ 221	$ 686	$ 686
[1] Includes income tax expense (benefit) of $(6) million for the three months ended September 30, 2021 and $4 million and $5 million for the nine months ended September 30, 2022 and 2021, respectively. There were no such amounts recorded during the three months ended September 30, 2022.

Operating Segments - Virginia P

Operating Segments - Virginia Power (Narrative) (Detail) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting Information [Line Items]
Gain (loss) on investments	$ (658)	$ 370
Virginia Electric and Power Company
Segment Reporting Information [Line Items]
Gain (loss) on investments	(89)	46
Operating Segments
Segment Reporting Information [Line Items]
After- tax net benefits (expenses)	(1,800)	(617)
Operating Segments | Nuclear Decommissioning Trust Funds
Segment Reporting Information [Line Items]
Gain (loss) on investments	(691)	309
Gain (loss) on investments, after tax	(536)	248
Operating Segments | Corporate and Other
Segment Reporting Information [Line Items]
After- tax net benefits (expenses)	(1,700)	(642)
After- tax net benefits (expenses) for specific items	(1,600)	(492)
Operating Segments | Virginia Electric and Power Company
Segment Reporting Information [Line Items]
After- tax net benefits (expenses)	(601)
Charge in connection with proposed comprehensive settlement agreement for fuel expenses	191
Charge in connection with proposed comprehensive settlement agreement for fuel expenses, after-tax	142
Charge for RGGI compliance cost	213
Charge for RGGI compliance cost, after tax	159
Charge associated with storm damage and service restoration	94	68
Charge associated with storm damage and service restoration, after tax	70	50
Charges for Dismantling cost	60
Charges for Dismantling cost, after tax	45
Charge for amortization of a regulatory asset, 2021 Triennial Review	183
Charge for amortization of a regulatory asset, 2021 Triennial Review, after tax	136
Benefit for change in CCRO reserve		130
Benefit for change in 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
Loss from unbilled revenue reduction		151
Loss from unbilled revenue reduction, after tax		112
Charges associated with the settlement of the 2021 Triennial Review		119
Charges associated with the settlement of the 2021 Triennial Review, after tax		89
Operating Segments | Virginia Electric and Power Company | Nuclear Decommissioning Trust Funds
Segment Reporting Information [Line Items]
Gain (loss) on investments	(96)
Gain (loss) on investments, after tax	(71)
Operating Segments | Virginia Electric and Power Company | Corporate and Other
Segment Reporting Information [Line Items]
After- tax net benefits (expenses)	(601)	(118)
After- tax net benefits (expenses) for specific items	(641)	$ (186)
After-tax net benefits (expenses) attributable to operating segment	$ (635)

Operating Segments (Schedule _2

Operating Segments (Schedule of Segment Reporting Information, by Segment, Virginia Power) (Detail) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting Information [Line Items]
Operating Revenue		$ 4,386	$ 3,176	$ 12,261	$ 10,084
Net income (loss) attributable to Dominion Energy		778	654	1,036	1,947
Virginia Electric and Power Company
Segment Reporting Information [Line Items]
Operating Revenue	[1]	2,875	1,976	7,217	5,547
Net income (loss) attributable to Dominion Energy		571	556	975	1,344
Dominion Energy Virginia
Segment Reporting Information [Line Items]
Operating Revenue		2,867	2,330	7,208	6,062
Dominion Energy Virginia | Virginia Electric and Power Company
Segment Reporting Information [Line Items]
Operating Revenue		2,865	2,326	7,200	6,048
Net income (loss) attributable to Dominion Energy		618	601	1,576	1,462
Corporate and Other
Segment Reporting Information [Line Items]
Operating Revenue		149	(391)	329	(171)
Corporate and Other | Virginia Electric and Power Company
Segment Reporting Information [Line Items]
Operating Revenue		10	(350)	17	(501)
Net income (loss) attributable to Dominion Energy		$ (47)	$ (45)	$ (601)	$ (118)
[1]See Note 19 for amounts attributable to affiliates.