Dominion Energy Gas 8-K 18 Nov 19 Other Events Financial data

Cover Page

Cover Page	Nov. 18, 2019
Document Information [Line Items]
Document Type	8-K
Amendment Flag	false
Entity Central Index Key	0000715957
Entity Registrant Name	DOMINION ENERGY, INC.
Document Period End Date	Nov. 18, 2019
Entity Incorporation, State or Country Code	VA
Entity File Number	001-08489
Entity Tax Identification Number	54-1229715
Entity Address, Address Line One	120 Tredegar Street
Entity Address, Postal Zip Code	23219
City Area Code	804
Local Phone Number	819-2000
Written Communications	false
Soliciting Material	false
Pre-commencement Tender Offer	false
Pre-commencement Issuer Tender Offer	false
Entity Emerging Growth Company	false
Entity Address, State or Province	VA
Entity Address, City or Town	Richmond
Common Stock
Document Information [Line Items]
Trading Symbol	D
Title of 12(b) Security	Common Stock, no par value
Security Exchange Name	NYSE
2016 Series A 5.25% Enhanced Junior Subordinated Notes
Document Information [Line Items]
Trading Symbol	DRUA
Title of 12(b) Security	2016 Series A 5.25% Enhanced Junior Subordinated Notes
Security Exchange Name	NYSE
2019 Series A Corporate Units
Document Information [Line Items]
Trading Symbol	DCUE
Title of 12(b) Security	2019 Series A Corporate Units
Security Exchange Name	NYSE
Virginia Electric and Power Company
Document Information [Line Items]
Document Type	8-K
Amendment Flag	false
Entity Central Index Key	0000103682
Entity Registrant Name	VIRGINIA ELECTRIC & POWER CO
Document Period End Date	Nov. 18, 2019
Entity Incorporation, State or Country Code	VA
Entity File Number	000-55337
Entity Tax Identification Number	54-0418825
Entity Address, Address Line One	120 Tredegar Street
Entity Address, Postal Zip Code	23219
City Area Code	804
Local Phone Number	819-2000
Entity Emerging Growth Company	false
Entity Address, State or Province	VA
Entity Address, City or Town	Richmond
Dominion Energy Gas Holdings, LLC
Document Information [Line Items]
Document Type	8-K
Amendment Flag	false
Entity Central Index Key	0001603291
Entity Registrant Name	DOMINION ENERGY GAS HOLDINGS, LLC
Document Period End Date	Nov. 18, 2019
Entity Incorporation, State or Country Code	VA
Entity File Number	001-37591
Entity Tax Identification Number	46-3639580
Entity Address, Address Line One	120 Tredegar Street
Entity Address, Postal Zip Code	23219
City Area Code	804
Local Phone Number	819-2000
Entity Emerging Growth Company	false
Entity Address, State or Province	VA
Entity Address, City or Town	Richmond
Dominion Energy Gas Holdings, LLC | 2014 Series C 4.6% Senior Notes
Document Information [Line Items]
Title of 12(b) Security	2014 Series C 4.6% Senior Notes
Security Exchange Name	NYSE
No Trading Symbol Flag	true

Consolidated Statements of Inco

Consolidated Statements of Income (Unaudited) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Operating Revenue	[1]	$ 3,858	$ 3,466
Operating Expenses
Electric fuel and other energy-related purchases		791	744
Purchased electric capacity		39	14
Purchased gas		730	340
Other operations and maintenance		1,002	795
Depreciation and amortization		651	498
Other taxes		292	199
Impairment of assets and other charges		835	1
Total operating expenses		4,340	2,591
Income (loss) from operations		(482)	875
Other income		388	100
Interest and related charges		469	314
Income (loss) from operations including noncontrolling interests before income tax expense		(563)	661
Income tax expense		114	135
Net Income (Loss) Including Noncontrolling Interests		(677)	526
Noncontrolling Interests		3	23
Net Income (loss)		$ (680)	$ 503
Earnings Per Common Share
Net income (loss) attributable to Dominion Energy - Basic		$ (0.86)	$ 0.77
Net income (loss) attributable to Dominion Energy - Diluted		$ (0.86)	$ 0.77
Virginia Electric and Power Company
Operating Revenue	[2]	$ 1,965	$ 1,748
Operating Expenses
Electric fuel and other energy-related purchases	[2]	596	591
Purchased electric capacity		33	14
Affiliated suppliers		86	83
Other		193	316
Depreciation and amortization		304	297
Other taxes		85	83
Impairment of assets and other charges		546
Total operating expenses		1,843	1,384
Income (loss) from operations		122	364
Other income		37	3
Interest and related charges	[2]	135	132
Income (loss) from operations including noncontrolling interests before income tax expense		24	235
Income tax expense		4	51
Net Income (loss)		20	184
Dominion Energy Gas Holdings, LLC
Operating Revenue	[3]	566	389
Operating Expenses
Purchased gas	[3]	12	14
Other energy-related purchases		1
Affiliated suppliers		39	32
Other		137	130
Depreciation and amortization		91	63
Other taxes		39	27
Gains on sales of assets			(44)
Total operating expenses		319	222
Income (loss) from operations		247	167
Earnings from equity method investees		13	20
Other income		42	17
Interest and related charges	[3]	87	4
Income (loss) from operations including noncontrolling interests before income tax expense		215	200
Income tax expense		43	43
Net income from continuing operations		172	157
Net income from discontinued operations		54	56
Net Income (Loss) Including Noncontrolling Interests		226	213
Noncontrolling Interests		36	33
Net Income (loss)		$ 190	$ 180
[1]	See Note 10 for amounts attributable to related parties.
[2]	See Note 19 for amounts attributable to affiliates.
[3]	See Note 19 for amounts attributable to related parties.

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Net income (loss) including noncontrolling interests		$ (677)	$ 526
Net income		(680)	503
Other comprehensive income (loss), net of taxes:
Net deferred gains (losses) on derivatives-hedging activities	[1]	(24)	111
Changes in unrealized net gains (losses) on investment securities	[2]	16	(13)
Amounts reclassified to net income:
Net derivative (gains) losses-hedging activities	[3]	(31)	8
Net realized (gains) losses on investment securities	[4]		1
Net pension and other postretirement benefit costs	[5]	8	25
Total other comprehensive income (loss)		(31)	132
Comprehensive income (loss) including noncontrolling interests		(708)	658
Comprehensive income attributable to noncontrolling interests		3	24
Comprehensive income (loss)		(711)	634
Virginia Electric and Power Company
Net income		20	184
Other comprehensive income (loss), net of taxes:
Net deferred gains (losses) on derivatives-hedging activities	[6]	(7)	5
Changes in unrealized net gains (losses) on investment securities	[7]	2
Amounts reclassified to net income:
Total other comprehensive income (loss)		(5)	5
Comprehensive income (loss)		15	189
Dominion Energy Gas Holdings, LLC
Net income (loss) including noncontrolling interests		226	213
Net income		190	180
Other comprehensive income (loss), net of taxes:
Net deferred gains (losses) on derivatives-hedging activities	[8]	(27)	14
Amounts reclassified to net income:
Net derivative (gains) losses-hedging activities	[9]	3	(2)
Net pension and other postretirement benefit costs	[10]	1	1
Total other comprehensive income (loss)		(23)	13
Comprehensive income (loss) including noncontrolling interests		203	226
Comprehensive income attributable to noncontrolling interests		35	34
Comprehensive income (loss)		$ 168	$ 192
[1]	Net of $5 million and $(37) million tax for the three months ended March 31, 2019 and 2018, respectively.
[2]	Net of $(6) million and $4 million tax for the three months ended March 31, 2019 and 2018, respectively.
[3]	Net of $10 million and $(3) million tax for the three months ended March 31, 2019 and 2018, respectively.
[4]	Net of $— million tax for both the three months ended March 31, 2019 and 2018.
[5]	Net of $(14) million and $(1) million tax for the three months ended March 31, 2019 and 2018, respectively.
[6]	Net of $2 million and $(2) million tax for the three months ended March 31, 2019 and 2018, respectively.
[7]	Net of $(1) million and $1 million tax for the three months ended March 31, 2019 and 2018, respectively.
[8]	Net of $9 million and $(5) million tax for the three months ended March 31, 2019 and 2018, respectively.
[9]	Net of $— million and $1 million tax for the three months ended March 31, 2019 and 2018, respectively.
[10]	Net of $(1) million tax for both the three months ended March 31, 2019 and 2018.

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income (Unaudited) (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Net deferred gains (losses) on derivative-hedging activities, tax	$ 5	$ (37)
Changes in unrealized net gains (losses) on investment securities, tax	(6)	4
Net derivative (gains) losses-hedging activities, tax	10	(3)
Net pension and other postretirement benefit costs, tax	(14)	(1)
Virginia Electric and Power Company
Net deferred gains (losses) on derivative-hedging activities, tax	2	(2)
Changes in unrealized net gains (losses) on investment securities, tax	(1)	1
Dominion Energy Gas Holdings, LLC
Net deferred gains (losses) on derivative-hedging activities, tax	9	(5)
Net derivative (gains) losses-hedging activities, tax		1
Net pension and other postretirement benefit costs, tax	$ (1)	$ (1)

Consolidated Balance Sheets (Un

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions		Mar. 31, 2019	Dec. 31, 2018
Current Assets
Cash and cash equivalents		$ 422	$ 268	[1]
Customer receivables (less allowance for doubtful accounts)		2,236	1,749	[1]
Other receivables (less allowance for doubtful accounts)	[2]	203	331	[1]
Inventories		1,657	1,418	[1]
Regulatory assets		725	496	[1]
Other		732	899	[1]
Total current assets		5,975	5,161	[1]
Investments
Nuclear decommissioning trust funds		5,580	4,938	[1]
Investment in equity method affiliates		1,433	1,278	[1]
Other		357	344	[1]
Total investments		7,370	6,560	[1]
Property, Plant and Equipment
Property, plant and equipment		93,485	76,578	[1]
Accumulated depreciation, depletion and amortization		(26,918)	(22,018)	[1]
Total property, plant and equipment, net		66,567	54,560	[1]
Deferred Charges and Other Assets
Goodwill		8,960	6,410	[1]
Intangible assets, net		887	670	[1]
Regulatory assets		7,575	2,676	[1]
Operating lease assets		486
Other		2,234	1,877	[1]
Total deferred charges and other assets		20,142	11,633	[1]
Total assets		100,054	77,914	[1]
Current Liabilities
Securities due within one year		3,080	3,624	[1]
Credit facility borrowings	[1]		73
Short-term debt		2,412	334	[1]
Accounts payable		920	914	[1]
Accrued interest, payroll and taxes		957	836	[1]
Regulatory liabilities		612	356	[1]
Other		1,795	1,510	[1]
Total current liabilities		9,776	7,647	[1]
Long-Term Debt
Long-term debt		32,043	26,328	[1]
Junior subordinated notes		3,431	3,430	[1]
Remarketable subordinated notes		1,387	1,386	[1]
Total long-term debt		36,861	31,144	[1]
Deferred Credits and Other Liabilities
Deferred income taxes and investment tax credits		6,108	5,116	[1]
Regulatory liabilities		10,799	6,840	[1]
Asset retirement obligations		4,985	2,250	[1]
Operating lease liabilities		418
Other		3,508	2,869	[1]
Total deferred credits and other liabilities		25,818	17,075	[1]
Total liabilities		72,455	55,866	[1]
Commitments and Contingencies (see Note 17)				[1]
Equity
Common stock - no par	[3]	20,834	12,588	[1]
Retained earnings		7,806	9,219	[1]
Accumulated other comprehensive income (loss)		(1,731)	(1,700)	[1]
Total common shareholders' equity		26,909	20,107	[1]
Noncontrolling interests		690	1,941	[1]
Total equity		27,599	22,048	[1]
Total liabilities and equity		100,054	77,914	[1]
Virginia Electric and Power Company
Current Assets
Cash and cash equivalents		14	29	[4]
Customer receivables (less allowance for doubtful accounts)		935	999	[4]
Other receivables (less allowance for doubtful accounts)		75	76	[4]
Affiliated receivables		59	101	[4]
Inventories		836	837	[4]
Regulatory assets	[5]	387	424
Other	[6]	454	529	[4]
Total current assets		2,373	2,571	[4]
Investments
Nuclear decommissioning trust funds		2,591	2,369	[4]
Other		3	3	[4]
Total investments		2,594	2,372	[4]
Property, Plant and Equipment
Property, plant and equipment		45,107	44,524	[4]
Accumulated depreciation, depletion and amortization		(13,614)	(14,003)	[4]
Total property, plant and equipment, net		31,493	30,521	[4]
Deferred Charges and Other Assets
Regulatory assets		1,719	737	[4]
Operating lease assets		202
Other	[6]	893	679	[4]
Total deferred charges and other assets		2,814	1,416	[4]
Total assets		39,274	36,880	[4]
Current Liabilities
Securities due within one year		392	350	[4]
Short-term debt		595	314	[4]
Accounts payable		255	339	[4]
Payables to affiliates		104	209	[4]
Affiliated current borrowings		24	224	[4]
Regulatory liabilities		281	299	[4]
Other	[6]	1,105	1,080	[4]
Total current liabilities		2,756	2,815	[4]
Long-Term Debt
Long-Term Debt		11,288	11,321	[4]
Deferred Credits and Other Liabilities
Deferred income taxes and investment tax credits		2,985	3,017	[4]
Regulatory liabilities		4,808	4,647	[4]
Asset retirement obligations		3,375	1,200	[4]
Operating lease liabilities		169
Other	[6]	949	833	[4]
Total deferred credits and other liabilities		12,286	9,697	[4]
Total liabilities		26,330	23,833	[4]
Commitments and Contingencies (see Note 17)				[4]
Equity
Common stock - no par	[7]	5,738	5,738	[4]
Other paid-in capital		1,113	1,113	[4]
Retained earnings		6,110	6,208	[4]
Accumulated other comprehensive income (loss)		(17)	(12)	[4]
Total common shareholders' equity		12,944	13,047	[4]
Total liabilities and equity		39,274	36,880	[4]
Dominion Energy Gas Holdings, LLC
Current Assets
Cash and cash equivalents		143	99	[8]
Customer receivables (less allowance for doubtful accounts)	[9]	168	187	[8]
Other receivables (less allowance for doubtful accounts)	[9]	13	18	[8]
Affiliated receivables		315	319	[8]
Affiliated notes receivable		716	819	[8]
Inventories		116	97	[8]
Gas imbalances	[9]	88	187	[8]
Current assets of discontinued operations		459	444	[8]
Regulatory assets	[10]	8	8
Other		132	178	[8]
Total current assets		2,150	2,348	[8]
Investments
Affiliated notes receivable		4,566	4,317	[8]
Investment in equity method affiliates		337	339	[8]
Total investments		4,903	4,656	[8]
Property, Plant and Equipment
Property, plant and equipment		14,835	14,700	[8]
Accumulated depreciation, depletion and amortization		(3,298)	(3,219)	[8]
Total property, plant and equipment, net		11,537	11,481	[8]
Deferred Charges and Other Assets
Goodwill		1,471	1,471	[8]
Pension and other postretirement benefit assets	[9]	721	705	[8]
Regulatory assets	[11]	52	52
Operating lease assets		41
Other	[9]	225	241	[8]
Total deferred charges and other assets		2,458	2,417	[8]
Noncurrent assets of discontinued operations		5,969	5,849	[8]
Total assets		27,017	26,751	[8]
Current Liabilities
Securities due within one year		450	748	[8]
Credit facility borrowings	[8]		73
Short-term debt		280	10	[8]
Accounts payable		52	76	[8]
Payables to affiliates		106	124	[8]
Affiliated current borrowings		2,952	3,097	[8]
Current liabilities of discontinued operations		1,097	1,273	[8]
Regulatory liabilities	[12]	29	24
Other	[9]	310	354	[8]
Total current liabilities		5,247	5,755	[8]
Long-Term Debt
Long-Term Debt		7,023	7,022	[8]
Affiliated Long-Term Debt		395
Deferred Credits and Other Liabilities
Deferred income taxes and investment tax credits		1,329	1,330	[8]
Regulatory liabilities		816	765	[8]
Operating lease liabilities		33
Other		132	118	[8]
Total deferred credits and other liabilities		2,310	2,213	[8]
Noncurrent liabilities of discontinued operations		3,181	2,896	[8]
Total liabilities		18,156	17,886	[8]
Commitments and Contingencies (see Note 17)				[8]
Equity
Predecessor equity		2,938	1,804	[8]
Membership interests		4,682	4,566	[8]
Accumulated other comprehensive income (loss)		(191)	(169)	[8]
Total common shareholders' equity		7,429	6,201	[8]
Noncontrolling interests		1,432	2,664	[8]
Total equity		8,861	8,865	[8]
Total liabilities and equity		$ 27,017	$ 26,751	[8]
[1]	Dominion Energy’s Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.
[2]	See Note 10 for amounts attributable to related parties.
[3]	1 billion shares authorized; 802 million shares and 681 million shares outstanding at March 31, 2019 and December 31, 2018, respectively.
[4]	Virginia Power’s Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.
[5]	Current regulatory assets are presented in other current assets in Virginia Power’s Consolidated Balance Sheets.
[6]	See Note 19 for amounts attributable to affiliates.
[7]	500,000 shares authorized; 274,723 shares outstanding at March 31, 2019 and December 31, 2018.
[8]	Dominion Energy Gas’ Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.
[9]	See Note 19 for amounts attributable to related parties.
[10]	Current regulatory assets are presented in other current assets in Dominion Energy Gas’ Consolidated Balance Sheets.
[11]	Noncurrent regulatory assets are presented in other deferred charges and other assets in Dominion Energy Gas’ Consolidated Balance Sheets.
[12]	Current regulatory liabilities are presented in other current liabilities in Dominion Energy Gas’ Consolidated Balance Sheets.

Consolidated Balance Sheets (_2

Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Millions		Mar. 31, 2019	Dec. 31, 2018
Customer receivables, allowance for doubtful accounts		$ 22	$ 14	[1]
Other receivables, allowance for doubtful accounts		$ 4	$ 4	[1]
Common stock, shares authorized		1,000,000,000	1,000,000,000
Common stock, shares outstanding		802,000,000	681,000,000
Virginia Electric and Power Company
Customer receivables, allowance for doubtful accounts		$ 9	$ 9	[2]
Other receivables, allowance for doubtful accounts		$ 3	$ 3	[2]
Common stock, shares authorized		500,000	500,000
Common stock, shares outstanding		274,723	274,723
Dominion Energy Gas Holdings, LLC
Customer receivables, allowance for doubtful accounts	[3]	$ 1	$ 1	[4]
[1]	Dominion Energy’s Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.
[2]	Virginia Power’s Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.
[3]	See Note 19 for amounts attributable to related parties.
[4]	Dominion Energy Gas’ Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.

Consolidated Statements of Equi

Consolidated Statements of Equity (Unaudited) - USD ($) $ in Millions	Total		Common Stock	Retained Earnings	AOCI	Total Common Shareholders' Equity	Noncontrolling Interests
Beginning balance at Dec. 31, 2017	$ 19,370		$ 9,865	$ 7,936	$ (659)	$ 17,142	$ 2,228
Beginning balance (in shares) at Dec. 31, 2017			645,000,000
Cumulative-effect of changes in accounting principles	6		$ (127)	1,029	(1,023)	(121)	127
Net income (loss) including noncontrolling interests	526			503		503	23
Issuance of common stock	580		$ 580			580
Issuance of common stock (in shares)			8,000,000
Sale of Dominion Energy Midstream common units - net of offering costs	4						4
Stock awards (net of change in unearned compensation)	3		$ 3			3
Dividends and distributions	(575)			(544)		(544)	(31)
Other comprehensive income (loss), net of tax	132				131	131	1
Other	(4)		(5)			(5)	1
Ending balance at Mar. 31, 2018	20,042		$ 10,316	8,924	(1,551)	17,689	2,353
Ending balance (in shares) at Mar. 31, 2018			653,000,000
Beginning balance at Dec. 31, 2018	22,048	[1]	$ 12,588	9,219	(1,700)	20,107	1,941
Beginning balance (in shares) at Dec. 31, 2018			681,000,000
Net income (loss) including noncontrolling interests	(677)			(680)		(680)	3
Issuance of common stock	247		$ 247			247
Issuance of common stock (in shares)			3,000,000
Acquisition of SCANA	6,818		$ 6,818			6,818
Acquisition of SCANA (in shares)			96,000,000
Acquisition of public interest in Dominion Energy Midstream	(40)		$ 1,181			1,181	(1,221)
Acquisition of public interest in Dominion Energy Midstream (in shares)			22,000,000
Dividends and distributions	(766)			(733)		(733)	(33)
Other comprehensive income (loss), net of tax	(31)				(31)	(31)
Ending balance at Mar. 31, 2019	$ 27,599		$ 20,834	$ 7,806	$ (1,731)	$ 26,909	$ 690
Ending balance (in shares) at Mar. 31, 2019			802,000,000
[1]	Dominion Energy’s Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.

Consolidated Statements of Eq_2

Consolidated Statements of Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Stockholders' Equity [Abstract]
Dividends declared per common share	$ 0.9175	$ 0.835

Virginia Electric and Power Com

Virginia Electric and Power Company Consolidated Statements of Equity (Unaudited) - USD ($) $ in Millions	Total		Virginia Electric and Power Company		Common Stock	Common StockVirginia Electric and Power Company	Other Paid-In CapitalVirginia Electric and Power Company	Retained Earnings	Retained EarningsVirginia Electric and Power Company	AOCI	AOCIVirginia Electric and Power Company
Beginning balance at Dec. 31, 2017			$ 12,224			$ 5,738	$ 1,113		$ 5,311	$ (659)	$ 62
Beginning balance (in shares) at Dec. 31, 2017					645,000,000	275,000
Cumulative-effect of changes in accounting principles	$ 6		3		$ (127)			$ 1,029	79	(1,023)	(76)
Net income	503		184						184
Dividends and distributions	(575)		(154)					(544)	(154)
Other comprehensive income (loss), net of tax	132		5							131	5
Ending balance at Mar. 31, 2018			12,262			$ 5,738	1,113		5,420	(1,551)	(9)
Ending balance (in shares) at Mar. 31, 2018					653,000,000	275,000
Beginning balance at Dec. 31, 2018	20,107	[1]	13,047	[2]		$ 5,738	1,113		6,208	(1,700)	(12)
Beginning balance (in shares) at Dec. 31, 2018					681,000,000	275,000
Net income	(680)		20						20
Dividends and distributions	(766)		(118)					$ (733)	(118)
Other comprehensive income (loss), net of tax	(31)		(5)							(31)	(5)
Ending balance at Mar. 31, 2019	$ 26,909		$ 12,944			$ 5,738	$ 1,113		$ 6,110	$ (1,731)	$ (17)
Ending balance (in shares) at Mar. 31, 2019					802,000,000	275,000
[1]	Dominion Energy’s Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.
[2]	Virginia Power’s Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.

Dominion Energy Gas Holdings, L

Dominion Energy Gas Holdings, LLC Consolidated Statements of Equity (Unaudited) - USD ($) $ in Millions	Total	Dominion Energy Gas Holdings, LLC	Predecessor EquityDominion Energy Gas Holdings, LLC	Member UnitsDominion Energy Gas Holdings, LLC	AOCI	AOCIDominion Energy Gas Holdings, LLC	Total Members' equity	Total Members' equityDominion Energy Gas Holdings, LLC	Noncontrolling Interests	Noncontrolling InterestsDominion Energy Gas Holdings, LLC
Beginning balance at Dec. 31, 2017		$ 8,495	$ 1,361	$ 4,261		$ (98)		$ 5,524		$ 2,971
Cumulative-effect of changes in accounting principles	$ 6	3		29	$ (1,023)	(26)	$ (121)	3	$ 127
Net income	503	180	14	166				180		33
Sale of Dominion Energy Midstream common units	4	4							4	4
Dividends and distributions	(575)	(47)	(9)	(13)			(544)	(22)	(31)	(25)
Distributions to noncontrolling interest			(21)					(21)		21
Equity contributions from Dominion Energy	580	25	25				580	25
Other comprehensive income (loss), net of tax	132	13	1		131	11	131	12	1	1
Other	4						5		(1)
Ending balance at Mar. 31, 2018		8,706	1,371	4,443		(113)		5,701		3,005
Beginning balance at Dec. 31, 2018		8,865	1,804	4,566		(169)		6,201		2,664
Net income	(680)	190	74	116				190		36
Acquisition of public interest in Dominion Energy Midstream	(40)	(40)	1,181				1,181	1,181	(1,221)	(1,221)
Dividends and distributions	(766)	(159)	(113)				(733)	(113)	$ (33)	(46)
Equity contributions from Dominion Energy	247						247
Other comprehensive income (loss), net of tax	$ (31)	(23)			$ (31)	(22)	$ (31)	(22)		(1)
Other		(8)	(8)					(8)
Ending balance at Mar. 31, 2019		$ 8,861	$ 2,938	$ 4,682		$ (191)		$ 7,429		$ 1,432

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Operating Activities
Net income (loss) including noncontrolling interests		$ (677)	$ 526
Net income		(680)	503
Adjustments to reconcile net income (loss) including noncontrolling interests to net cash provided by operating activities:
Depreciation, depletion and amortization (including nuclear fuel)		734	572
Deferred income taxes and investment tax credits		106	131
Provision for refunds and rate credits to electric utility customers		988	215
Impairment of assets and other charges		835
Net (gains) losses on nuclear decommissioning trust funds and other investments		(271)	25
Revision to future ash pond and landfill closure costs		(113)
Other adjustments		(11)	(56)
Changes in:
Accounts receivable		153	47
Inventories		53	104
Deferred fuel and purchased gas costs, net		27	(264)
Prepayments		89	(3)
Accounts payable		(284)	(57)
Accrued interest, payroll and taxes		(329)	(103)
Customer deposits		(35)	101
Margin deposit assets and liabilities		93	(33)
Other operating assets and liabilities		(187)	27
Net cash provided by operating activities		1,171	1,232
Investing Activities
Plant construction and other property additions (including nuclear fuel)		(1,002)	(1,103)
Cash and restricted cash acquired in the SCANA Combination		389
Acquisition of solar development projects		(29)	(7)
Proceeds from sales of securities		506	419
Purchases of securities		(494)	(453)
Proceeds from sales of assets and equity method investments		154
Contributions to equity method affiliates		(69)	(87)
Other		(7)	48
Net cash used in investing activities		(552)	(1,183)
Financing Activities
Issuance (repayment) of short-term debt, net		1,905	(585)
Issuance of short-term notes			950
Repayment of credit facility borrowings		(113)
Repayment of long-term debt, including redemption premiums		(2,217)	(1,180)
Issuance of long-term debt		600	950
Issuance of common stock		247	581
Common dividend payments		(733)	(544)
Other		(72)	(72)
Net cash provided by (used in) financing activities		(383)	100
Increase (decrease) in cash, restricted cash and equivalents		236	149
Cash, restricted cash and equivalents at beginning of period		391	185
Cash, restricted cash and equivalents at end of period		627	334
Significant noncash investing and financing activities:
Accrued capital expenditures	[1],[2],[3]	201	175
Virginia Electric and Power Company
Operating Activities
Net income		20	184
Adjustments to reconcile net income (loss) including noncontrolling interests to net cash provided by operating activities:
Depreciation, depletion and amortization (including nuclear fuel)		346	343
Deferred income taxes and investment tax credits		(49)	83
Impairment of assets and other charges		546
Revision to future ash pond and landfill closure costs		(113)
Provision for rate credits to customers			215
Other adjustments		(39)	(1)
Changes in:
Accounts receivable		62	78
Affiliated receivables and payables		(63)	(59)
Inventories		(19)	54
Deferred fuel and purchased gas costs, net		24	(328)
Prepayments		(2)	(11)
Accounts payable		(33)	3
Accrued interest, payroll and taxes		15	(5)
Other operating assets and liabilities		(66)	(26)
Net realized and unrealized changes related to derivative activities		14	49
Net cash provided by operating activities		643	579
Investing Activities
Plant construction and other property additions (including nuclear fuel)		(563)	(570)
Purchases of nuclear fuel		(11)	(46)
Acquisition of solar development projects		(27)
Proceeds from sales of securities		253	218
Purchases of securities		(269)	(235)
Other		(3)	(6)
Net cash used in investing activities		(620)	(639)
Financing Activities
Issuance (repayment) of short-term debt, net		281	(116)
Issuance (repayment) of affiliated current borrowings, net		(200)	(22)
Repayment of long-term debt, including redemption premiums			(350)
Issuance of long-term debt			700
Common dividend payments		(118)	(154)
Other		(1)	(6)
Net cash provided by (used in) financing activities		(38)	52
Increase (decrease) in cash, restricted cash and equivalents		(15)	(8)
Cash, restricted cash and equivalents at beginning of period		38	24
Cash, restricted cash and equivalents at end of period		23	16
Significant noncash investing and financing activities:
Accrued capital expenditures	[2]	117	104
Dominion Energy Gas Holdings, LLC
Operating Activities
Net income (loss) including noncontrolling interests		226	213
Net income		190	180
Adjustments to reconcile net income (loss) including noncontrolling interests to net cash provided by operating activities:
Gains on sales of assets			(44)
Depreciation, depletion and amortization (including nuclear fuel)		113	84
Deferred income taxes and investment tax credits		21	110
Other adjustments		4	(5)
Changes in:
Accounts receivable		(32)	(25)
Affiliated receivables and payables		(26)	92
Inventories		(20)	(11)
Prepayments		33	(135)
Accounts payable		(23)	(42)
Accrued interest, payroll and taxes		(40)	(33)
Pension and other postretirement benefits		(35)	(36)
Customer deposits		(32)	99
Other operating assets and liabilities		(14)	22
Net cash provided by operating activities		175	289
Investing Activities
Plant construction and other property additions (including nuclear fuel)		(150)	(291)
Proceeds from assignments of shale development rights			44
Other		(1)	(5)
Net cash used in investing activities		(151)	(252)
Financing Activities
Issuance (repayment) of short-term debt, net		270	(15)
Issuance (repayment) of affiliated current borrowings, net		(145)	106
Repayment of credit facility borrowings		(73)
Issuance of affiliated long-term debt		395
Repayment of long-term debt, including redemption premiums		(300)	(250)
Issuance of long-term debt			250
Net proceeds from sale of Dominion Energy Midstream Common Units			4
Contributions from Domionion Energy			25
Common dividend payments		(159)	(47)
Other		(1)	(23)
Net cash provided by (used in) financing activities		(13)	71
Increase (decrease) in cash, restricted cash and equivalents		11	108
Cash, restricted cash and equivalents at beginning of period		198	57
Cash, restricted cash and equivalents at end of period		209	165
Significant noncash investing and financing activities:
Accrued capital expenditures	[2]	$ 31	$ 56
[1]	See Note 16 for noncash financing activities related to the acquisition of the public interest in Dominion Energy Midstream.
[2]	See Note 2 for noncash investing and financing activities related to the adoption of a new accounting standard for leasing arrangements.
[3]	See Note 3 for noncash investing and financing activities related to the SCANA Combination.

Nature of Operations

Nature of Operations	Nov. 18, 2019
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 transporters of energy. Dominion Energy’s operations are conducted through various subsidiaries, including Virginia Power and Dominion Energy Gas. Virginia Power is a regulated public utility that generates, transmits and distributes electricity for sale in Virginia and northeastern North Carolina. Following the Dominion Energy Gas Restructuring, Dominion Energy Gas is a holding company that conducts business activities through regulated interstate natural gas transmission and underground storage systems primarily in the eastern and Rocky Mountain regions of the U.S., as well as the Cove Point LNG Facility and Liquefaction Facility and for further discussion of the Dominion Energh Gas Restruct uring

Significant Accounting Policies

Significant Accounting Policies	Nov. 18, 2019
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 , as updated in Current Report on Form 8-K, filed November 18, 2019. In the Companies’ opinion, the accompanying unaudited Consolidated Financial Statements contain all adjustments necessary to present fairly their financial position as of March 31, 2019 and their results of operations, changes in equity and cash flows for the three months ended March 31, 2019 and 2018. 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 60.9 37.5 In January 2019, Dominion Energy acquired all outstanding partnership interests not owned by Dominion Energy and Dominion Energy Midstream became a wholly-owned subsidiary of Dominion Energy. Subsequent to this activity, as a result of the Dominion Energy Gas Restructuring, Dominion Energy Gas is considered to have acquired all of the outstanding partnership interests of Dominion Energy Midstream and Dominion Energy Midstream became a wholly-owned subsidiary of Dominion Energy Gas 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’ 2018 Consolidated Financial Statements and Notes have been reclassified to conform to the 2019 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 and/or Dominion Energy Gas, 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 as updated in Current Report on Form 8-K , mber 18, 2019, 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 three months ended March 31, 2019 and 2018: Cash, Restricted Cash and Equivalents Cash, Restricted Cash and Equivalents at March 31, 2019 March 31, 2018 December 31, December 31, (millions) Dominion Energy Cash and cash equivalents $ 422 $ 189 $ 268 $ 120 Restricted cash and equivalents (1) 205 145 123 65 Cash, restricted cash and equivalents shown in the Consolidated Statements of Cash Flows $ 627 $ 334 $ 391 $ 185 Virginia Power Cash and cash equivalents $ 14 $ 6 $ 29 $ 14 Restricted cash and equivalents (1) 9 10 9 10 Cash, restricted cash and equivalents shown in the Consolidated Statements of Cash Flows $ 23 $ 16 $ 38 $ 24 Dominion Energy Gas Cash and cash equivalents (2) $ 147 $ 38 $ 108 $ 18 Restricted cash and equivalents (1) 62 127 90 39 Cash, restricted cash and equivalents shown in the Consolidated Statements of Cash Flows $ 209 $ 165 $ 198 $ 57 (1) Restricted cash and equivalent balances are presented within other current assets in the Companies’ Consolidated Balance Sheets. (2) At March 31, 2019, March 31, 2018, December 31, 2018 and December 31, 2017, Dominion Energy Gas had $4 million, $4 million, $9 million and $3 million of cash and cash equivalents included in current assets of discontinued operations, respectively. Property, Plant and Equipment In January 2019, Virginia Power committed to a plan to retire certain automated meter reading infrastructure associated with its electric operations before the end of its useful life and replace such equipment with more current AMI technology. As a result, Virginia Power recorded a charge of $160 million ($119 million after-tax), 10-K , as updated in Current Report on Form 8-K, filed November 18, 2019 . In March 2019, Virginia Power committed to retire certain electric generating units before the end of their useful lives and completed the retirement of certain units at six after-tax), 10- K, as updated in Current Report on Form 8-K, filed November 18, 2019. Leases The Companies lease certain assets including vehicles, real estate, office equipment and other operational assets under both operating and finance leases. For the Companies’ operating leases, rent expense is recognized on a straight-line basis over the term of the lease agreement. Rent expense associated with operating leases, short-term leases and variable leases is primarily recorded in other operations and maintenance expense in the Companies’ Consolidated Statements of Income. Rent expense associated with finance leases results in the separate presentation of interest expense on the lease liability and amortization expense of the related right-of-use Certain of the Companies’ leases include one or more options to renew, with renewal terms that can extend the lease from one to 70 right-of-use one year renewal options that the Companies are reasonably certain will be exercised. Additionally, certain of the Companies’ leases contain escalation clauses whereby payments are adjusted for consumer price or other indices or contain fixed dollar or percentage increases. The Companies also have leases with variable payments based upon usage of, or revenues associated with, the leased assets. The determination of the discount rate utilized has a significant impact on the calculation of the present value of the lease liability included in the Companies’ Consolidated Balance Sheets. For the Companies’ fleet of leased vehicles, the discount rate is equal to the prevailing borrowing rate earned by the lessor. For the Companies’ remaining leased assets, the discount rate implicit in the lease is generally unable to be determined from a lessee perspective. As such, the Companies use internally-developed incremental borrowing rates as a discount rate in the calculation of the present value of the lease liability. The incremental borrowing rates are determined based on an analysis of the Companies’ publicly available unsecured borrowing rates, adjusted for a collateral discount, over various lengths of time that most closely correspond to the Companies’ lease maturities. In addition, Dominion Energy acts as lessor under certain power purchase agreements in which the counterparty or counterparties purchase substantially all of the output of certain solar facilities. These leases are considered operating in nature. For such leasing arrangements, rental revenue and an associated accounts receivable are recorded when the monthly output of the solar facility is determined. Depreciation on these solar facilities is computed on a straight-line basis over an estimated useful life of 30 years. New Accounting Standards Leases In February 2016, the FASB issued revised accounting guidance for the recognition, measurement, presentation and disclosure of leasing arrangements. The update requires that a liability and corresponding right-of-use The guidance became effective for the Companies’ interim and annual reporting periods beginning January 1, 2019. The Companies adopted this revised accounting guidance using a modified retrospective approach, which requires lessees and lessors to recognize and measure leases at the date of adoption. Under this approach, the Companies utilized the transition practical expedient to maintain historical presentation for periods before January 1, 2019. The Companies also applied the other practical expedients, which required no reassessment of whether existing contracts are or contain leases, no reassessment of lease classification for existing leases and no reassessment of existing or expired land easements that were not previously accounted for as leases. In connection with the adoption of this revised accounting guidance, Dominion Energy, Virginia Power and Dominion Energy Gas recorded $504 million, $209 million and $64 million, respectively, of offsetting right-of-use right-or-use

Acquisitions and Dispositions

Acquisitions and Dispositions	Nov. 18, 2019
Text Block [Abstract]
Acquisitions and Dispositions	Note 3. Acquisitions and Dispositions Acquisition of SCANA In January 2019, Dominion Energy issued 95.6 million shares of Dominion Energy common stock, valued at $6.8 billion, representing 0.6690 of a share of Dominion Energy common stock for each share of SCANA common stock, in connection with the completion of the SCANA Combination. SCANA, through its regulated subsidiaries, is primarily engaged in the generation, transmission and distribution of electricity in the central, southern and southwestern portions of South Carolina and in the distribution of natural gas in North Carolina and South Carolina. In addition, SCANA markets natural gas to retail customers in the southeast U.S. Following completion of the SCANA Combination, SCANA operates as a wholly-owned subsidiary of Dominion Energy. In addition, SCANA’s debt totaled $6.9 billion at closing. The SCANA Combination expanded Dominion Energy’s portfolio of regulated electric generation, transmission and distribution and regulated natural gas distribution infrastructure operations. See Note 3 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K , as updated in Current Report on Form 8-K, filed November 18, 2019 , conditions, information on assets and liabilities acquired, significant financing transactions, regulatory matters and proceedings, legal proceedings and commitments and contingencies. Merger Approval and Conditions Merger Approval The SCANA Combination required approval of SCANA’s shareholders, FERC, the North Carolina Commission, the South Carolina Commission, the Georgia Public Service Commission and the NRC and clearance from the Federal Trade Commission under the Hart-Scott-Rodino Act. All such approvals were received prior to closing of the SCANA Combination. Various parties filed petitions for rehearing or reconsideration of the SCANA Merger Approval Order. In January 2019, the South Carolina Commission issued an order (1) granting the request of various parties and finding that DESC was imprudent in its actions by not disclosing material information to the South Carolina Office of Regulatory Staff and the South Carolina Commission with regard to costs incurred subsequent to March 2015 and (2) denying the petitions for rehearing or consideration as to other issues raised in the various petitions. The deadline to appeal the SCANA Merger Approval Order and the order on rehearing expired in April 2019, and no party has sought appeal. Refunds to Customers As a condition to the SCANA Merger Approval Order, DESC will provide refunds and restitution of $2.0 billion over 20 years with capital support from Dominion Energy. In September and October 2017, DESC received proceeds totaling $1.1 billion in full satisfaction of its share of a settlement agreement among DESC, Santee Cooper and Toshiba Corporation in connection with Westinghouse and WECTEC, both wholly-owned subsidiaries of Toshiba Corporation and responsible for the engineering and construction of the NND Project, filing for bankruptcy. The purchase price allocation below includes a previously established regulatory liability at DESC totaling $1.1 billion, of which $67 million is considered current, associated with the monetization of the bankruptcy settlement with Toshiba Corporation. In accordance with the terms of the SCANA Merger Approval Order, this regulatory liability, net of amounts that may be required to satisfy any liens against NND Project property totaling $1.0 billion, will be refunded to DESC electric service customers over a 20-year Additionally, in the first quarter of 2019, DESC recorded a reduction in operating revenue and a corresponding regulatory liability of $1.0 billion, of which $137 million is considered current, representing a refund of amounts previously collected from retail electric customers of DESC for the NND Project to be credited over an estimated 11-year after-tax NND Project As a condition to the SCANA Merger Approval Order, DESC committed to excluding from rate recovery $2.4 billion of costs related to the NND Project and $180 million of costs associated with the purchase of the Columbia Energy Center power station. Regulatory assets included in SCANA’s historical balance sheet at December 31, 2018 reflected these disallowances. The remaining regulatory asset associated with the NND Project of $2.8 billion, of which $138 million is considered current, will be collected over a 20-year Other Terms and Conditions ● DESC will not file an application for a general rate case with the South Carolina Commission with a requested effective date earlier than January 2021; ● PSNC will not file an application for a general rate case with the North Carolina Commission with a requested effective date earlier than April 2021; ● Dominion Energy has committed to increasing SCANA’s historical level of corporate contributions to charities by $1 million per year over the next five years; ● Dominion Energy will maintain DESC and PSNC’s headquarters in Cayce, South Carolina and Gastonia, North Carolina, respectively; and ● Dominion Energy will seek to minimize reductions in local employment by allowing some DES employees supporting shared and common services functions and activities to be located in Cayce, South Carolina where it makes economic and practical sense to do so. Purchase Price Allocation SCANA’s assets acquired and liabilities assumed have been measured at estimated fair value at closing and are included in the Southeast Energy operating segment, which was established following the closing of the SCANA Combination. The majority of the operations acquired are subject to the rate setting authority of FERC and the North and South Carolina Commissions and are therefore accounted for pursuant to ASC 980, Regulated Operations The fair value of SCANA’s assets acquired and liabilities assumed that are not subject to the rate-setting provisions discussed above and the fair values of SCANA’s investments accounted for under the equity method have been determined using the income approach and the market approach. The valuation of SCANA’s long-term debt is considered a Level 2 fair value measurement. All other valuations are considered Level 3 fair value measurements due to the use of significant judgmental and unobservable inputs, including projected timing and amount of future cash flows and discount rates reflecting risk inherent in the future market prices. The excess of the purchase price over the estimated fair values of the assets acquired and liabilities assumed is reflected as goodwill. The goodwill reflects the value associated with enhancing Dominion Energy’s portfolio of regulated operations in the growing southeast region of the U.S. The goodwill recognized is not deductible for income tax purposes, and as such, no deferred taxes have been recorded related to goodwill. The table below shows the preliminary allocation of the purchase price to the assets acquired and liabilities assumed at closing, including an adjustment related to income taxes identified during the first quarter as discussed in Note 5. The allocation is subject to change during the measurement period as additional information is obtained about the facts and circumstances that existed at closing. Any material adjustments to provisional amounts identified during the measurement period will be recognized and disclosed in the reporting period in which the adjustment amounts are determined. Certain tax-related Amount (millions) Total current assets (1) $ 1,772 Investments 224 Property, plant and equipment (2) 11,006 Goodwill 2,550 Regulatory assets (3) 3,940 Other deferred charges and other assets, including intangible assets 430 Total Assets 19,922 Total current liabilities 1,515 Long-term debt 6,707 Deferred income taxes 1,100 Regulatory liabilities 2,662 Other deferred credits and other liabilities 1,099 Total Liabilities 13,083 Total purchase price (4) $ 6,839 (1) Includes $389 million of cash, restricted cash and equivalents, of which $115 million is considered restricted. (2) Includes $105 million of certain property, plant and equipment associated with the NND Project for which Dominion Energy committed to forgo recovery in accordance with the SCANA Merger Approval Order. As a result, Dominion Energy’s Consolidated Statement of Income for the three months ended March 31, 2019 includes a charge of $105 million ($79 million after-tax), (3) Includes $264 million of certain income tax-related (4) Includes stock-based compensation awards with an estimated fair value of $21 million. See Note 3 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10- K, as updated in Current Report on Form 8-K, filed November 18, 2019 , Results of Operations and Unaudited Pro Forma Information The impact of the SCANA Combination on Dominion Energy’s operating revenue and net income attributable to Dominion Energy in the Consolidated Statements of Income for the three months ended March 31, 2019 was an increase of $170 million and a decrease of $1.1 billion, respectively. Dominion Energy incurred merger and integration-related costs, of which $115 million was recorded in other operations and maintenance expense and $9 million was recorded in interest and related charges in the Consolidated Statements of Income for the three months ended March 31, 2019. These costs consist of professional fees, the charitable contribution commitment described above, employee-related expenses, certain financing costs and other miscellaneous costs. The following unaudited pro forma financial information reflects the consolidated results of operations of Dominion Energy assuming the SCANA Combination had taken place on January 1, 2018. The unaudited pro forma financial information has been presented for illustrative purposes only and may change as Dominion Energy finalizes its valuation of certain assets acquired and liabilities assumed at the acquisition date. The unaudited pro forma financial information is not necessarily indicative of the consolidated results of operations that would have been achieved or the future consolidated results of operations of the combined company. Three Months Ended March 31, 2019 (1) 2018 (1) (millions, except EPS) Operating Revenue $ 4,887 $ 4,636 Net income attributable to Dominion Energy 605 675 Earnings Per Common Share – Basic $ 0.76 $ 0.90 Earnings Per Common Share – Diluted $ 0.76 $ 0.90 (1) Amounts include adjustments for non-recurring Dominion Energy Gas Restructuring The Dominion Energy Gas Restructuring is considered to be a reorganization of entities under common control. As a result, Dominion Energy Gas’ basis in DCPI and DMLPHCII, which includes the general partner of Dominion Energy Midstream, a controlling 75% interest in Cove Point, DECG, Dominion Energy Questar Pipeline, a 50% noncontrolling interest in White River Hub and a 25.93% noncontrolling interest in Iroquois, is equal to Dominion Energy’s cost basis in the assets and liabilities of such entities since the applicable inception dates of common control. In November 2019, following completion of the Dominion Energy Gas Restructuring, DCPI and DMLPHCII are wholly-owned subsidiaries of Dominion Energy Gas and therefore are consolidated by Dominion Energy Gas. The accompanying Consolidated F S Notes of Dominion Energ y Gas non-Dominion The Dominion Energy Gas Restructuring includes the disposition of East Ohio and DGP by Dominion Energy Gas effective November 2019. This restructuring represents a strategic shift in the operations of Dominion Energy Gas as Dominion Energy Gas’ operations will consist of LNG terminalling and storage and regulated gas transmission and storage operations. As a result, the accompanying Consolidated Financial Statements and Notes of Dominion Energy Gas have been retrospectively adjusted to include the historical results and financial position of East Ohio and DGP as discontinued operations until November 2019, presented within the Corporate and Other segment. As the Dominion Energy Gas Restructuring is considered to be a reorganization of entities under common control, Dominion Energy Gas will reflect the disposition as an equity transaction in November 2019. The following table represents selected information regarding the results of operations of East Ohio, which are reported as discontinued operations in Dominion Energy Gas’ Consolidated Statements of Income: Three Months Ended March 31, 2019 2018 (millions) Operating revenue $ 229 $ 215 Depreciation and amortization 21 17 Other operating expenses 148 137 Other income 18 17 Interest and related charges 10 8 Income tax expense 14 14 Net income from discontinued operations $ 54 $ 56 The carrying amounts of major classes of assets and liabilities relating to East Ohio, which are reported as discontinued operations in Dominion Energy Gas’ Consolidated Balance Sheets were as follows: March 31, At December 31, (millions) Current assets of discontinued operations (1) $ 440 $ 423 Investments 2 2 Property, plant and equipment, net 3,710 3,669 Regulatory assets 740 711 Other deferred charges and other assets, including goodwill and intangible assets 1,321 1,275 Noncurrent assets of discontinued operations 5,773 5,657 Current liabilities of discontinued operations 1,086 1,262 Long-term debt 1,551 1,300 Deferred income taxes and investment tax credits 728 716 Regulatory liabilities 755 747 Other deferred credits and liabilities 117 108 Noncurrent liabilities of discontinued operations 3,151 2,871 (1) Includes cash and cash equivalents of $4 million and $9 million as of March 31, 2019 and December 31, 2018, respectively. Capital expenditures and significant noncash items relating to East Ohio included the following: Three Months Ended March 31, 2019 2018 (millions) Capital expenditures $ 65 $ 58 Significant noncash items Accrued capital expenditures 6 6 The following table represents selected information regarding the results of operations of DGP, which are reported as discontinued operations in Dominion Energy Gas’ Consolidated Statements of Income: Three Months Ended March 31, 2019 2018 (millions) Operating revenue $ 45 $ 51 Depreciation and amortization 1 4 Other operating expenses 44 47 Net income from discontinued operations $ — $ — The carrying amounts of major classes of assets and liabilities relating to DGP, which are reported as discontinued operations in Dominion Energy Gas’ Consolidated Balance Sheets were as follows: March 31, At December 31, (millions) Current assets of discontinued operations (1) $ 19 $ 21 Noncurrent assets of discontinued operations (2) 196 192 Current liabilities of discontinued operations 11 11 Noncurrent liabilities of discontinued operations 30 25 (1) Includes cash and cash equivalents of less than a million dollars as of March 31, 2019 and December 31, 2018. (2) Primarily property, plant and equipment, net. Capital expenditures and significant noncash items of DGP included the following: Three Months Ended March 31, 2019 2018 (millions) Capital expenditures $ 3 $ 1

Operating Revenue

Operating Revenue	Nov. 18, 2019
Text Block [Abstract]
Operating Revenue	Note 4. Operating Revenue The Companies’ operating revenue consists of the following: Three Months Ended March 31, 2019 2018 (millions) Dominion Energy Regulated electric sales: Residential $ 646 $ 817 Commercial 496 524 Industrial 30 107 Government and other retail 200 213 Wholesale 48 42 Nonregulated electric sales 316 418 Regulated gas sales: Residential 602 364 Commercial 191 103 Other 38 10 Nonregulated gas sales 247 88 Regulated gas transportation and storage: FERC-regulated 277 262 State-regulated 213 190 Nonregulated gas transportation and storage 174 — Other regulated revenues (1) 58 50 Other nonregulated revenues (1)(2) 95 136 Total operating revenue from contracts with customers 3,631 3,324 Other revenues (3) 227 142 Total operating revenue $ 3,858 $ 3,466 Virginia Power Regulated electric sales: Residential $ 923 $ 817 Commercial 636 524 Industrial 112 107 Government and other retail 204 213 Wholesale 37 42 Other regulated revenues 33 32 Other nonregulated revenues (2) 6 13 Total operating revenue from contracts with customers 1,951 1,748 Other revenues (2)(3) 14 — Total operating revenue $ 1,965 $ 1,748 Dominion Energy Gas Regulated gas sales - wholesale $ 2 5 Nonregulated gas sales (2) 2 2 Regulated gas transportation and storage 340 314 Nonregulated gas transportation and storage 174 $ — Management service revenue (2) 44 59 Other regulated revenues 3 8 Total operating revenue from contracts with customers 565 388 Other revenues 1 1 Total operating revenue $ 566 $ 389 (1) Amounts above include $51 million for the three months ended March 31, 2019, and $30 million for the three months ended March 31, 2018 primarily consisting of NGL sales at Dominion Energy which are considered to be goods transferred at a point in time. (2) See Notes 10 and 19 for amounts attributable to related parties and affiliates. (3) Amounts above include $14 million and $8 million of alternative revenue at Dominion Energy and Virginia Power for the three months ended March 31, 2019, respectively. 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 the Companies expect to recognize this revenue. These revenues relate to contracts containing fixed prices where the Companies will earn the associated revenue over time as they stand 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 the Companies elect to recognize revenue in the amount they have a right to invoice. Revenue expected to be recognized on multi-year 20 1 9 20 2 0 20 2 1 20 2 2 20 2 3 Thereafter Total (millions) Dominion Energy $ 1,197 $ 1,547 $ 1,448 $ 1,334 $ 1,166 $ 13,562 $ 20,254 Virginia Power 16 3 1 — — — 20 Dominion Energy Gas 1,266 1,657 1,557 1,422 1,231 13,865 20,998 Contract assets represent an entity’s right to consideration in exchange for goods and services that the entity has transferred to a customer. At March 31, 2019 and December 31, 2018, Dominion Energy’s contract asset balances were $40 million and $42 million, respectively. Dominion Energy Gas’ contract asset balances were $55 million and $58 million at March 31, 2019 and December 31, 2018, respectively. Dominion Energy and Dominion Energy Gas’ contract assets are recorded in other deferred charges and other assets in the Consolidated Balance Sheets. Contract liabilities represent an entity’s obligation to transfer goods or services to a customer for which the entity has received consideration, or the amount that is due, from the customer. At March 31, 2019 and December 31, 2018, Dominion Energy’s contract liability balances were $77 million and $106 million, respectively. At March 31, 2019 and December 31, 2018, Virginia Power’s contract liability balances were $21 million and $22 million, respectively. At March 31, 2019 and December 31, 2018, Dominion Energy Gas’ contract liability balances were $35 million and $49 million, respectively. During the three months ended March 31, 2019, Dominion Energy, Virginia Power and Dominion Energy Gas recognized revenue of $85 million, $22 million and $25 million, respectively, from the beginning contract liability balances as the Companies fulfilled their obligations to provide service to their customers. The Companies’ contract liabilities are recorded in other current liabilities and other deferred credits and other liabilities in the Consolidated Balance Sheets.

Income Taxes

Income Taxes	Nov. 18, 2019
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 Dominion Energy Gas Three Months Ended March 31, 2019 2018 2019 2018 2019 2018 U.S. statutory rate 21.0 % 21.0 % 21.0 % 21.0 % 21.0 % 21.0 % Increases (reductions) resulting from: State taxes, net of federal benefit 2.2 4.1 4.6 4.5 3.4 5.5 Investment tax credits (1.5 ) (0.5 ) (3.2 ) (0.9 ) — — Production tax credits (0.8 ) (0.6 ) (1.0 ) (0.7 ) — — Reversal of excess deferred income taxes (5.1 ) (1.4 ) (5.0 ) (2.0 ) (0.7 ) (0.8 ) Write-off (34.1 ) — — — — — Other, net (2.0 ) (2.1 ) 0.1 (0.3 ) (3.8 ) (1) (4.0 ) (1) Effective tax rate (20.3 )% 20.5 % 16.5 % 21.6 % 19.9 % 21.7 % (1) Includes For the Companies’ rate-regulated entities, deferred taxes will reverse at the weighted average rate used to originate the deferred tax liability, which in some cases will be 35%. The Companies have recorded an estimate of the portion of excess deferred income tax amortization in 2019. The reversal of these excess deferred income taxes will impact the effective tax rate, and may ultimately impact rates charged to customers. As described in Note 13 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K as updated in Current Report on Form 8-K, filed November 18, 2019, In connection with the SCANA Combination, Dominion Energy committed to forgo, or limit, the recovery of certain income tax-related As part of the SCANA Combination, Dominion Energy acquired SCANA’s unrecognized tax benefits of $106 million. In the first quarter of 2019, Dominion Energy completed the evaluation of a state income tax position acquired in the SCANA Combination that increased unrecognized tax benefits by $51 million. This adjustment resulted in an increase to goodwill of $40 million and had no impact on Dominion Energy’s income tax expense. It is reasonably possible that settlement negotiations could decrease this unrecognized tax benefit in the next twelve months. As of March 31, 2019, there have been no other material changes in the Companies’ unrecognized tax benefits or possible changes that could reasonably be expected to occur during the next twelve months. See Note 5 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K , a The 2017 Tax Reform Act limits the deductibility of interest expense to 30% of adjusted taxable income for certain businesses, with any disallowed interest carried forward indefinitely. Subject to additional guidance in yet to be finalized regulations, the Companies expect interest expense to be deductible in 2019.

Earnings Per Share

Earnings Per Share	Nov. 18, 2019
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 March 31, 2019 2018 (millions, except EPS) Net income (loss) attributable to Dominion Energy $ (680 ) $ 503 Average shares of common stock outstanding – Basic 793.1 650.5 Net effect of dilutive securities — — Average shares of common stock outstanding – Diluted 793.1 650.5 Earnings Per Common Share – Basic $ (0.86 ) $ 0.77 Earnings Per Common Share – Diluted $ (0.86 ) $ 0.77 As a result of a net loss for the three months ended March 31, 2019, the issuance of common stock under potentially-dilutive securities was considered antidilutive and therefore excluded from the calculation of diluted EPS. The 2016 Equity Units were excluded from the calculation of diluted EPS for the three months ended March 31, 2018, as the dilutive stock price threshold was not met. The Dominion Energy Midstream convertible preferred units were potentially dilutive securities but had no effect on the calculation of diluted EPS for the three months ended March 31, 2018.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	Nov. 18, 2019
Equity [Abstract]
Accumulated Other Comprehensive Income	Note 7. Accumulated Other Comprehensive Income Dominion Energy The following table presents Dominion Energy’s changes in AOCI by component, net of tax: Deferred gains and losses on derivatives- hedging activities Unrealized gains and losses on investment securities Unrecognized pension and other postretirement benefit costs Other comprehensive loss from equity method investees Total (millions) Three Months Ended March 31, 2019 Beginning balance $ (235 ) $ 2 $ (1,465 ) $ (2 ) $ (1,700 ) Other comprehensive income before reclassifications: (24 ) 16 — — (8 ) Amounts reclassified from AOCI: (gains) losses (1) (31 ) — 8 — (23 ) Net current period other comprehensive income (loss) (55 ) 16 8 — (31 ) Ending balance $ (290 ) $ 18 $ (1,457 ) $ (2 ) $ (1,731 ) Three Months Ended March 31, 2018 Beginning balance $ (302 ) $ 747 $ (1,101 ) $ (3 ) $ (659 ) Other comprehensive income before reclassifications: 111 (13 ) — — 98 Amounts reclassified from AOCI: (gains) losses (1) 8 1 25 — 34 Net current period other comprehensive income (loss) 119 (12 ) 25 — 132 Cumulative-effect of changes in accounting principle (64 ) (732 ) (227 ) — (1,023 ) Less other comprehensive income attributable to noncontrolling interest 1 — — — 1 Ending balance $ (248 ) $ 3 $ (1,303 ) $ (3 ) $ (1,551 ) (1) See table below for details about these reclassifications. The following table presents Dominion Energy’s reclassifications out of AOCI by component: Details about AOCI components Amounts reclassified from AOCI Affected line item in the Consolidated Statements of Income (millions) Three Months Ended March 31, 2019 Deferred (gains) and losses on derivatives-hedging activities: Commodity contracts $ (54 ) Operating revenue (3 ) Purchased gas Interest rate contracts 10 Interest and related charges Foreign currency contracts 6 Other income Total (41 ) Tax 10 Income tax expense Total, net of tax $ (31 ) Unrecognized pension and other postretirement benefit costs: Amortization of prior-service costs (credits) $ (5 ) Other income Amortization of actuarial losses 27 Other income Total 22 Tax (14 ) Income tax expense Total, net of tax $ 8 Three Months Ended March 31, 2018 Deferred (gains) and losses on derivatives-hedging activities: Commodity contracts $ 12 Operating revenue 2 Purchased gas (7 ) Electric fuel and other energy-related purchases Interest rate contracts 12 Interest and related charges Foreign currency contracts (8 ) Other income Total 11 Tax (3 ) Income tax expense Total, net of tax $ 8 Unrealized (gains) and losses on investment securities: Realized (gain) loss on sale of securities $ 1 Other income Total 1 Tax — Income tax expense Total, net of tax $ 1 Unrecognized pension and other postretirement benefit costs: Amortization of prior-service costs (credits) $ (5 ) Other income Amortization of actuarial losses 31 Other income Total 26 Tax (1 ) Income tax expense Total, net of tax $ 25 Virginia Power The following table presents Virginia Power’s changes in AOCI by component, net of tax: Deferred gains and losses on derivatives- hedging activities Unrealized gains and losses on investment securities Total (millions) Three Months Ended March 31, 2019 Beginning balance $ (13 ) $ 1 $ (12 ) Other comprehensive income before reclassifications: (7 ) 2 (5 ) Amounts reclassified from AOCI: (gains) losses — — — Net current period other comprehensive income (loss) (7 ) 2 (5 ) Ending balance $ (20 ) $ 3 $ (17 ) Three Months Ended March 31, 2018 Beginning balance $ (12 ) $ 74 $ 62 Other comprehensive income before reclassifications: 5 — 5 Amounts reclassified from AOCI: (gains) losses — — — Net current period other comprehensive income (loss) 5 — 5 Cumulative-effect of changes in accounting principle (3 ) (73 ) (76 ) Ending balance $ (10 ) $ 1 $ (9 ) Dominion Energy Gas The following table presents Dominion Energy Gas’ changes in AOCI by component, net of tax: Deferred gains and losses on derivatives- hedging activities Unrecognized pension costs Total (millions) Three Months Ended March 31, 2019 Beginning balance $ (25 ) $ (144 ) $ (169 ) Other comprehensive income before reclassifications: gains (losses) (27 ) — (27 ) Amounts reclassified from AOCI: (gains) losses (1) 3 1 4 Net current period other comprehensive income (loss) (24 ) 1 (23 ) Less other comprehensive income attributable to noncontrolling interest (1 ) — (1 ) Ending balance $ (48 ) $ (143 ) $ (191 ) Three Months Ended March 31, 2018 Beginning balance $ (23 ) $ (75 ) $ (98 ) Other comprehensive income before reclassifications: gains (losses) 13 — 13 Amounts reclassified from AOCI: (gains) losses (1) (2 ) 1 (1 ) Net current period other comprehensive income 11 1 12 Cumulative-effect of changes in accounting principle (5 ) (21 ) (26 ) Less other comprehensive income attributable to noncontrolling interest 1 — 1 Ending balance $ (16 ) $ (95 ) $ (113 ) (1) See table below for details about these reclassifications. The following table presents Dominion Energy Gas’ reclassifications out of AOCI by component: Details about AOCI components Amounts reclassified from AOCI Affected line item in the Consolidated Statements of Income (millions) Three Months Ended March 31, 2019 Deferred (gains) and losses on derivatives-hedging activities: Commodity contracts $ (2 ) Net income from discontinued operations Interest rate contracts (1 ) Interest and related charges Foreign currency contracts 6 Other income Total 3 Tax — Income tax expense Total, net of tax $ 3 Unrecognized pension costs: Actuarial losses $ 2 Other income Total 2 Tax (1 ) Income tax expense Total, net of tax $ 1 Three Months Ended March 31, 2018 Deferred (gains) and losses on derivatives-hedging activities: Commodity contracts $ 3 Net income from discontinued operations Interest rate contracts 2 Interest and related charges Foreign currency contracts (8 ) Other income Total (3 ) Tax 1 Income tax expense Total, net of tax $ (2 ) Unrecognized pension costs: Actuarial losses $ 2 Other income Total 2 Tax (1 ) Income tax expense Total, net of tax $ 1

Fair Value Measurements

Fair Value Measurements	Nov. 18, 2019
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 , as updated in Current Report on Form 8-K, filed November 18, 2019. The Companies enter into certain physical and financial forwards, futures, options and swaps, 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, futures, and swaps contracts. An option model is used to value Level 3 physical options. The discounted cash flow model for forwards, futures, and swaps calculates mark-to-market mark-to-market The following table presents Dominion Energy’s quantitative information about Level 3 fair value measurements at March 31, 2019. 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 and futures: Natural gas (2) $ 60 Discounted cash flow Market price (per Dth) (3) (2) - 7 (1 ) FTRs 2 Discounted cash flow Market price (per MWh) (3) (1) - 2 — Physical options: Natural gas 1 Option model Market price (per Dth) (3) 2 - 7 3 Price volatility (4) 10% - 66 % Total assets $ 63 Liabilities Financial forwards: FTRs $ 3 Discounted cash flow Market price (per MWh) (3) (1) - 2 1 Physical options: Natural gas 7 Option model Market price (per Dth) (3) 2 - 16 5 Price volatility (4) 23% - 492% 82​​​​​​​% Total liabilities $ 10 (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) 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 March 31, 2019 Assets Derivatives: Commodity $ 2 $ 92 $ 63 $ 157 Interest rate — 3 — 3 Foreign currency — 13 — 13 Investments (1) Equity securities: U.S. 3,688 — — 3,688 Fixed income securities: Corporate debt instruments — 470 — 470 Government securities 468 678 — 1,146 Cash equivalents and other 11 — — 11 Total assets $ 4,169 $ 1,256 $ 63 $ 5,488 Liabilities Derivatives: Commodity $ — $ 35 $ 10 $ 45 Interest rate — 323 — 323 Foreign currency — 1 — 1 Total liabilities $ — $ 359 $ 10 $ 369 At December 31, 2018 Assets Derivatives: Commodity $ — $ 180 $ 70 $ 250 Interest rate — 18 — 18 Foreign currency — 26 — 26 Investments (1) Equity securities: U.S. 3,277 — — 3,277 Fixed income securities: Corporate debt instruments — 431 — 431 Government securities 455 688 — 1,143 Cash equivalents and other 11 — — 11 Total assets $ 3,743 $ 1,343 $ 70 $ 5,156 Liabilities Derivatives: Commodity $ — $ 129 $ 6 $ 135 Interest rate — 142 — 142 Foreign currency — 2 — 2 Total liabilities $ — $ 273 $ 6 $ 279 (1) Includes investments held in the nuclear decommissioning and rabbi trusts. Excludes $213 million and $220 million of assets at March 31, 2019 and December 31, 2018, 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 2019 2018 (millions) Beginning balance $ 64 $ 150 Total realized and unrealized gains (losses): Included in earnings: Operating revenue (1 ) (1 ) Electric fuel and other energy-related purchases (4 ) (17 ) Included in other comprehensive income — 1 Included in regulatory assets/liabilities 7 (21 ) Settlements (1 ) 7 Purchases (10 ) — Transfers out of Level 3 (2 ) 1 Ending balance $ 53 $ 120 The unrealized gains or losses included in earnings in the Level 3 fair value category relating to assets/liabilities still held at the reporting date were not material for the three months ended March 31, 2019 and 2018. Virginia Power The following table presents Virginia Power’s quantitative information about Level 3 fair value measurements at March 31, 2019. 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 and futures: Natural gas (2) $ 59 Discounted cash flow Market price (per Dth) (3) (2) - 7 (1 ) FTRs 2 Discounted cash flow Market price (per MWh) (3) (1) - 2 —​​​​​​​​​​​​​​ Physical options: Natural gas 1 Option model Market price (per Dth) (3) 2 - 7 2 Price volatility (4) 10% - 54 % Total assets $ 62 Liabilities Financial forwards: FTRs $ 3 Discounted cash flow Market price (per MWh) (3) (1) - 2 1 Total liabilities $ 3 (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 March 31, 2019 Assets Derivatives: Commodity $ — $ 4 $ 62 $ 66 Investments (1) Equity securities: U.S. 1,683 — — 1,683 Fixed income securities: Corporate debt instruments — 233 — 233 Government securities 192 328 — 520 Total assets $ 1,875 $ 565 $ 62 $ 2,502 Liabilities Derivatives: Commodity $ — $ 6 $ 3 $ 9 Interest rate — 181 — 181 Total liabilities $ — $ 187 $ 3 $ 190 At December 31, 2018 Assets Derivatives: Commodity $ — $ 24 $ 66 $ 90 Interest rate — 3 — 3 Investments (1) Equity securities: U.S. 1,476 — — 1,476 Fixed income securities: Corporate debt instruments — 221 — 221 Government securities 164 343 — 507 Total assets $ 1,640 $ 591 $ 66 $ 2,297 Liabilities Derivatives: Commodity $ — $ 9 $ 6 $ 15 Interest rate — 88 — 88 Total liabilities $ — $ 97 $ 6 $ 103 (1) Includes investments held in the nuclear decommissioning trusts. Excludes $150 million and $160 million of assets at March 31, 2019 and December 31, 2018, 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 March 31, 2019 2018 (millions) Beginning balance $ 60 $ 147 Total realized and unrealized gains (losses): Included in earnings: Electric fuel and other energy-related purchases (4 ) (17 ) Included in regulatory assets/liabilities 8 (19 ) Settlements (5 ) 6 Ending balance $ 59 $ 117 There were no Dominion Energy Gas The following table presents Dominion Energy Gas’ assets and liabilities for derivatives 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 March 31, 2019 Assets Foreign currency $ — $ 13 $ — $ 13 Total assets $ — $ 13 $ — $ 13 Liabilities Interest rate $ — $ 41 $ — $ 41 Foreign currency — 1 — 1 Total liabilities $ — $ 42 $ — $ 42 At December 31, 2018 Assets Commodity $ — $ 3 $ — $ 3 Interest rate — 2 — 2 Foreign currency — 26 — 26 Total assets $ — $ 31 $ — $ 31 Liabilities Interest rate $ — $ 17 $ — $ 17 Foreign currency — 2 — 2 Total liabilities $ — $ 19 $ — $ 19 The following table presents the net change in Dominion Energy Gas’ assets and liabilities for derivatives measured at fair value on a recurring basis and included in the Level 3 fair value category. There were no Three Months Ended March 31, 2018 (millions) Beginning balance $ (2 ) Total realized and unrealized gains: Included in other comprehensive income 1 Transfers out of Level 3 1 Ending balance $ — There were no gains or losses included in earnings in the Level 3 fair value category for the three months ended March 31, 2019 and 2018. There were no 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 and cash equivalents, restricted cash and equivalents, customer and other receivables, affiliated receivables, short-term debt, affiliated current borrowings, payables to affiliates and accounts payable are representative of fair value because of the short-term nature of these instruments. For the Companies’ financial instruments that are not recorded at fair value, the carrying amounts and estimated fair values are as follows: March 31, 2019 December 31, 2018 Carrying Amount Estimated Fair Value (1) Carrying Amount Estimated Fair Value (1) (millions) Dominion Energy Long-term debt, including securities due within one year (2) $ 35,123 $ 37,531 $ 29,952 $ 31,045 Credit facility borrowings — — 73 73 Junior subordinated notes (3) 3,431 3,471 3,430 3,358 Remarketable subordinated notes (3) 1,387 1,398 1,386 1,340 Virginia Power Long-term debt, including securities due within one year (3) $ 11,680 $ 12,782 $ 11,671 $ 12,400 Dominion Energy Gas Long-term debt, including securities due within one year (4) $ 7,473 $ 7,586 $ 7,770 $ 7,803 Affiliated long-term debt 395 395 — — Credit facility borrowings — — 73 73 (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 issues with short-term maturities and variable rates refinanced at current market rates is a reasonable estimate of their fair value. (2) Carrying amount includes amounts which represent the unamortized debt issuance costs, discount or premium, and foreign currency remeasurement adjustments. At March 31, 2019 and December 31, 2018, includes the valuation of certain fair value hedges associated with fixed rate debt of $(11) million and $(20) million, respectively. (3) Carrying amount includes amounts which represent the unamortized debt issuance costs, discount or premium. (4) Carrying amount includes amounts which represent the unamortized debt issuance costs, discount or premium, and foreign currency remeasurement adjustments.

Derivatives and Hedge Accountin

Derivatives and Hedge Accounting Activities	Nov. 18, 2019
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 , as updated in Current Report on Form 8-K, filed November 18, 2019. Derivative assets and liabilities are presented gross on the Companies’ Consolidated Balance Sheets. Dominion Energy’s derivative contracts include both over-the-counter over-the-counter Over-the-counter over-the-counter In general, most over-the-counter over-the-counter 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: March 31, 2019 December 31, 2018 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 $ 77 $ 5 $ — $ 72 $ 175 $ 12 $ — $ 163 Exchange 78 26 — 52 68 68 — — Interest rate contracts: Over-the-counter 3 — — 3 18 1 — 17 Foreign currency contracts: Over-the-counter 13 7 — 6 26 2 — 24 Total derivatives, subject to a master netting or similar arrangement $ 171 $ 38 $ — $ 133 $ 287 $ 83 $ — $ 204 (1) Excludes $2 million and $7 million of derivative assets at March 31, 2019 and December 31, 2018, respectively, which are not subject to master netting or similar arrangements. March 31, 2019 Offset in the Consolidated Balance Sheet December 31, 2018 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 $ 19 $ 5 $ 1 $ 13 $ 19 $ 12 $ — $ 7 Exchange 26 26 — — 115 68 47 — Interest rate contracts: Over-the-counter 323 6 — 317 142 1 — 141 Foreign currency contracts: Over-the-counter 1 1 — — 2 2 — — Total derivatives, subject to a master netting or similar arrangement $ 369 $ 38 $ 1 $ 330 $ 278 $ 83 $ 47 $ 148 (1) Excludes $ — 1 Volumes The following table presents the volume of Dominion Energy’s derivative activity at March 31, 2019. 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 (1) 78 61 Basis 277 547 Electricity (MWh): Fixed price 7,915,870 1,100,600 FTRs 18,146,928 — NGLs (Gal) 25,074,000 — Interest rate (2) $ 2,554,400,000 $ 5,001,010,256 Foreign currency (2)(3) $ — $ 280,000,000 (1) Includes options. (2) Maturity is determined based on final settlement period. (3) Euro equivalent volumes are €250,000,000 AOCI The following table presents selected information related to gains (losses) on cash flow hedges included in AOCI in Dominion Energy’s Consolidated Balance Sheet at March 31, 2019: AOCI After-Tax Amounts Expected to be Reclassified to Earnings During the Next 12 Months After-Tax Maximum Term (millions) Commodities: Gas $ 2 $ 1 43 months Electricity 33 24 21 months Interest rate (333 ) (31 ) 393 months Foreign currency 8 (1 ) 87 months Total $ (290 ) $ (7 ) The amounts that will be reclassified from AOCI to earnings will generally be offset by the recognition of the hedged transactions (e.g., anticipated sales) 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 market prices, interest rates and foreign currency exchange 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. Gains and losses on derivatives in fair value hedge relationships were immaterial for the three months ended March 31, 2019 and 2018. The following table presents the amounts recorded on the balance sheet related to cumulative basis adjustments for fair value hedges: Carrying Amount of the Hedged Asset (Liability) Cumulative Amount of Fair Value Hedging Adjustments Included in the Carrying Amount of the Hedged Assets(Liabilities) March 31, 2019 December 31, 2018 March 31, 2019 December 31, 2018 (millions) Long-term debt $ (739 ) $ (731 ) $ 11 $ 19 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) March 31, 2019 ASSETS Current Assets Commodity $ 35 $ 59 $ 94 Interest rate 2 — 2 Total current derivative assets (1) 37 59 96 Noncurrent Assets Commodity 15 48 63 Interest rate 1 — 1 Foreign currency 13 — 13 Total noncurrent derivative assets (2) 29 48 77 Total derivative assets $ 66 $ 107 $ 173 LIABILITIES Current Liabilities Commodity $ 17 $ 21 $ 38 Interest rate 79 1 80 Foreign currency 1 — 1 Total current derivative liabilities (3) 97 22 119 Noncurrent Liabilities Commodity 1 6 7 Interest rate 230 13 243 Total noncurrent derivative liabilities (4) 231 19 250 Total derivative liabilities $ 328 $ 41 $ 369 December 31, 2018 ASSETS Current Assets Commodity $ 55 $ 154 $ 209 Interest rate 14 — 14 Total current derivative assets (1) 69 154 223 Noncurrent Assets Commodity 6 35 41 Interest rate 4 — 4 Foreign currency 26 — 26 Total noncurrent derivative assets (2) 36 35 71 Total derivative assets $ 105 $ 189 $ 294 LIABILITIES Current Liabilities Commodity $ 17 $ 112 $ 129 Interest rate 26 — 26 Foreign currency 2 — 2 Total current derivative liabilities (3) 45 112 157 Noncurrent Liabilities Commodity 5 1 6 Interest rate 116 — 116 Total noncurrent derivative liabilities (4) 121 1 122 Total derivative liabilities $ 166 $ 113 $ 279 (1) Current derivative assets are presented in other current assets in Dominion Energy’s Consolidated Balance Sheets. (2) Noncurrent derivative assets are presented in other deferred charges and other assets in Dominion Energy’s Consolidated Balance Sheets. (3) Current derivative liabilities are presented in other current liabilities in Dominion Energy’s Consolidated Balance Sheets. (4) Noncurrent derivative liabilities are presented in other deferred credits and other liabilities in Dominion Energy’s Consolidated Balance Sheets. 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 (2) (millions) Three Months Ended March 31, 2019 Derivative type and location of gains (losses): Commodity: Operating revenue $ 54 Purchased gas 3 Total commodity $ 66 $ 57 $ — Interest rate (3) (84 ) (10 ) (84 ) Foreign currency (4) (11 ) (6 ) — Total $ (29 ) $ 41 $ (84 ) Three Months Ended March 31, 2018 Derivative type and location of gains (losses): Commodity: Operating revenue $ (12 ) Purchased gas (2 ) Electric fuel and other energy-related purchases 7 Total commodity $ 97 $ (7 ) $ — Interest rate (3) 38 (12 ) 68 Foreign currency (4) 13 8 — Total $ 148 $ (11 ) $ 68 (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 Statements of Income are classified in interest and related charges. (4) Amounts recorded in Dominion Energy’s Consolidated Statements of Income are classified in other income. Derivatives not designated as hedging instruments Amount of Gain (Loss) Recognized in Income on Derivatives (1) Three Months Ended March 31, 2019 2018 (millions) Derivative type and location of gains (losses): Commodity: Operating revenue $ 3 $ 6 Purchased gas 3 — Electric fuel and other energy-related purchases (9 ) (13 ) Total $ (3 ) $ (7 ) (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. 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: March 31, 2019 in the Consolidated Balance Sheet December 31, 2018 Balance Sheet Gross in the Consolidated Balance Sheet (1) Financial 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 $ 61 $ 2 $ — $ 59 $ 64 $ 6 $ — $ 58 Interest rate contracts: Over-the-counter — — — — 3 — — 3 Total derivatives, subject to a master netting or similar arrangement $ 61 $ 2 $ — $ 59 $ 67 $ 6 $ — $ 61 (1) Excludes $5 million and $26 million of derivative assets at March 31, 2019 and December 31, 2018, respectively, which are not subject to master netting or similar arrangements. March 31, 2019 December 31, 2018 Gross Liabilities Presented in the Consolidated Balance Sheet (1) Financial Instruments Cash Collateral Paid Net Amounts Gross Liabilities Presented in the (1) Financial Instruments Cash Collateral Paid Net Amounts (millions) Commodity contracts: Over-the-counter $ 3 $ 2 $ 1 $ — $ 6 $ 6 $ — $ — Interest rate contracts: Over-the-counter 181 — — 181 88 — — 88 Total derivatives, subject to a master netting or similar arrangement $ 184 $ 2 $ 1 $ 181 $ 94 $ 6 $ — $ 88 (1) Excludes $ 6 9 Volumes The following table presents the volume of Virginia Power’s derivative activity at March 31, 2019. 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 (1) 20 26 Basis 182 473 Electricity (MWh): FTRs 18,146,928 — Interest rate (2) $ 850,000,000 $ 1,200,000,000 (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 March 31, 2019: AOCI After-Tax Amounts Expected to be After-Tax Maximum Term (millions) Interest rate $ (20 ) $ (1 ) 393​​​​​​​ months Total $ (20 ) $ (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) March 31, 2019 ASSETS Current Assets Commodity $ — $ 24 $ 24 Total current derivative assets (1) — 24 24 Noncurrent Assets Commodity — 42 42 Total noncurrent derivative assets (2) — 42 42 Total derivative assets $ — $ 66 $ 66 LIABILITIES Current Liabilities Commodity $ — $ 6 $ 6 Interest rate 44 — 44 Total current derivative liabilities (3) 44 6 50 Noncurrent Liabilities Commodity — 3 3 Interest rate 137 — 137 Total noncurrent derivatives liabilities (4) 137 3 140 Total derivative liabilities $ 181 $ 9 $ 190 December 31, 2018 ASSETS Current Assets Commodity $ — $ 60 $ 60 Interest rate 3 — 3 Total current derivative assets (1) 3 60 63 Noncurrent Assets Commodity — 30 30 Total noncurrent derivative assets (2) — 30 30 Total derivative assets $ 3 $ 90 $ 93 LIABILITIES Current Liabilities Commodity $ — $ 15 $ 15 Interest rate 10 — 10 Total current derivative liabilities (3) 10 15 25 Noncurrent Liabilities Interest rate 78 — 78 Total noncurrent derivatives liabilities (4) 78 — 78 Total derivative liabilities $ 88 $ 15 $ 103 (1) Current derivative assets are presented in other current assets in Virginia Power’s Consolidated Balance Sheets. (2) Noncurrent derivative assets are presented in other deferred charges and other assets in Virginia Power’s Consolidated Balance Sheets. (3) Current derivative liabilities are presented in other current liabilities in Virginia Power’s Consolidated Balance Sheets. (4) 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 in AOCI on Derivatives (1) Amount of Gain (Loss) Reclassified From AOCI to Income Increase (Decrease) in Derivatives (2) (millions) Three Months Ended March 31, 2019 Derivative type and location of gains (losses): Interest rate (3) $ (9 ) $ — $ (84 ) Total $ (9 ) $ — $ (84 ) Three Months Ended March 31, 2018 Derivative type and location of gains (losses): Interest rate (3) $ 7 $ — $ 68 Total $ 7 $ — $ 68 (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) Amounts recorded in Virginia Power’s Consolidated Statements of Income are classified in interest and related charges. Derivatives not designated as hedging instruments Amount of Gain (Loss) Recognized in Income on Derivatives (1) Three Months Ended March 31, 2019 2018 (millions) Derivative type and location of gains (losses): Commodity (2) $ (9 ) $ — Total $ (9 ) $ — (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) Amounts recorded in Virginia Power’s Consolidated Statements of Income are classified in electric fuel and other energy-related purchases. Dominion Energy Gas Balance Sheet Presentation The tables below present Dominion Energy Gas’ 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: March 31, 2019 December 31, 2018 Gross Assets Presented in the Consolidated Financial Instruments Cash Collateral Received Net Amounts Gross Assets Presented in the Consolidated Financial Instruments Cash Collateral Received Net Amounts (millions) Commodity contracts: Over-the-counter $ — $ — $ — $ — $ 3 $ — $ — $ 3 Interest rate contracts: Over-the-counter — — — — 2 — — 2 Foreign currency contracts: Over-the-counter 13 7 — 6 26 2 — 24 Total derivatives, $ 13 $ 7 $ — $ 6 $ 31 $ 2 $ — $ 29 March 31, 2019 Gross Amounts Not Consolidated Balance December 31, 2018 Gross Amounts Not Offset in the Consolidated Balance Gross Financial Cash Collateral Paid Net Amounts Gross Financial Cash Collateral Paid Net Amounts (millions) Interest rate contracts: Over-the-counter $ 41 $ 6 $ — $ 35 $ 17 $ — $ — $ 17 Foreign currency contracts: Over-the-counter 1 1 — — 2 2 — — Total derivatives, $ 42 $ 7 $ — $ 35 $ 19 $ 2 $ — $ 17 Volumes The following table presents the volume of Dominion Energy Gas’ derivative activity at March 31, 2019. 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 NGLs (Gal) 25,074,000 — Interest rate (1) $ 300,000,000 $ 1,000,000,000 Foreign currency (1)(2) $ — $ 280,000,000 (1) Maturity is based on final settlement period. (2) Euro equivalent volumes are € AOCI The following table presents selected information related to gains (losses) on cash flow hedges included in AOCI in Dominion Energy Gas’ Consolidated Balance Sheet at March 31, 2019: AOCI After-Tax Amounts Expected After- Tax Maximum Term (millions) Interest rate $ (56 ) $ (5 ) 309 months Foreign currency 8 (1 ) 87 months Total $ (48 ) $ (6 ) 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 prices contemplated by the underlying risk management strategies and will vary from the expected amounts presented above as a result of changes in market prices, interest rates and foreign currency exchange rates. Fair Value and Gains and Losses on Derivative Instruments The following tables present the fair values of Dominion Energy Gas’ derivatives and where they are presented in its Consolidated Balance Sheets: Fair Value- Under Hedge Accounting Fair Value-Derivatives Not Under Hedge Accounting Total Fair Value (millions) March 31, 2019 ASSETS Noncurrent Assets Foreign currency $ 13 $ — $ 13 Total noncurrent derivative assets (1) 13 — 13 Total derivative assets $ 13 $ — $ 13 LIABILITIES Current Liabilities Interest rate $ 18 $ — $ 18 Foreign currency 1 — 1 Total current derivative liabilities (2) 19 — 19 Noncurrent Liabilities Interest rate 23 — 23 Total noncurrent derivative liabilities (3) 23 — 23 Total derivative liabilities $ 42 $ — $ 42 December 31, 2018 ASSETS Current Assets Commodity $ 3 $ — $ 3 Interest rate 2 — 2 Total current derivative assets (4) 5 — 5 Noncurrent Assets Foreign currency 26 — 26 Total noncurrent derivative assets (1) 26 — 26 Total derivative assets $ 31 $ — $ 31 LIABILITIES Current Liabilities Interest rate $ 9 $ — $ 9 Foreign currency 2 — 2 Total current derivative liabilities (2) 11 — 11 Noncurrent Liabilities Interest rate 8 — 8 Total noncurrent derivative liabilities (3) 8 — 8 Total derivative liabilities $ 19 $ — $ 19 (1) Noncurrent derivatives assets are presented in other deferred charges and other assets in Dominion Energy Gas’ Consolidated Balance Sheets. (2) Current derivative liabilities are presented in other current liabilities in Dominion Energy Gas’ Consolidated Balance Sheets. (3) Noncurrent derivative liabilities are presented in other deferred credits and other liabilities in Dominion Energy Gas’ Consolidated Balance Sheets. (4) Current derivative assets include $2 million , with the remainder recorded in The following table presents the gains and losses on Dominion Energy Gas’ 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 Derivatives (1) Amount of Gain (Loss) Reclassified From AOCI to Income (millions) Three Months Ended March 31, 2019 Derivative Type and Location of Gains (Losses): Commodity: Net i ncome $ 2 Total commodity $ (1 ) $ 2 Interest rate (2) (24 ) 1 Foreign currency (3) (11 ) (6 ) Total $ (36 ) $ (3 ) Three Months Ended March 31, 2018 Derivative Type and Location of Gains (Losses): Commodity: Net income $ (3 ) Total commodity $ 4 $ (3 ) Interest rate (2) 2 (2 ) Foreign currency (3) 13 8 Total $ 19 $ 3 (1) Amounts deferred into AOCI have no associated effect in Dominion Energy Gas’ Consolidated Statements of Income. (2) Amounts recorded in Dominion Energy Gas’ Consolidated Statements of Income are classified in interest and related charges. (3) Amounts recorded in Dominion Energy Gas’ Consolidated Statements of Income are classified in other income.

Investments

Investments	Nov. 18, 2019
Investments, Debt and Equity Securities [Abstract]
Investments	Note 10. Investments Dominion Energy Equity and Debt Securities Rabbi Trust Securities Equity and fixed income securities and cash equivalents in Dominion Energy’s rabbi trusts and classified as trading totaled $112 million and $111 million at March 31, 2019 and December 31, 2018, 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. Amortized Cost Total Unrealized Gains Total Unrealized Losses Recorded (millions) March 31, 2019 Equity securities: (1) U.S. $ 1,747 $ 2,002 $ (17 ) $ 3,732 Fixed income securities: (2) Corporate debt instruments 457 15 (2 ) 470 Government securities 1,076 29 (4 ) 1,101 Common/collective trust funds 72 — — 72 Insurance contracts 199 — — 199 Cash equivalents and other (3) 6 — — 6 Total $ 3,557 $ 2,046 $ (23 ) (4) $ 5,580 December 31, 2018 Equity securities: (1) U.S. $ 1,741 $ 1,640 $ (51 ) $ 3,330 Fixed income securities: (2) Corporate debt instruments 435 5 (9 ) 431 Government securities 1,092 17 (12 ) 1,097 Common/collective trust funds 76 — — 76 Cash equivalents and other (3) 4 — — 4 Total $ 3,348 $ 1,662 $ (72 ) (4) $ 4,938 (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 $4 million at March 31, 2019. (4) The fair value of securities in an unrealized loss position was $405 million and $833 million at March 31, 2019 and December 31, 2018, 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 March 31, (millions) 2019 2018 Net gains (losses) recognized during the period $ 414 $ (65 ) Less: Net gains recognized during the period on securities sold during the period (19 ) (19 ) Unrealized gains (losses) recognized during the period on securities still held at March 31, 2019 and 2018 (1) $ 395 $ (84 ) (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 March 31, 2019 by contractual maturity is as follows: Amount (millions) Due in one year or less $ 187 Due after one year through five years 382 Due after five years through ten years 394 Due after ten years 680 Total $ 1,643 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 March 31, 2019 2018 (millions) Proceeds from sales $ 506 $ 419 Realized gains (1) 43 36 Realized losses (1) 23 19 (1) Includes realized gains and losses recorded to the nuclear decommissioning trust regulatory liability. Other-than-temporary impairment losses on investments held in nuclear decommissioning trust funds recognized in earnings for Dominion Energy were immaterial for the three months ended March 31, 2019 and 2018. 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 Recorded (millions) March 31, 2019 Equity securities: (1) U.S. $ 871 $ 922 $ (9 ) $ 1,784 Fixed income securities: (2) Corporate debt instruments 227 7 (1 ) 233 Government securities 506 14 (1 ) 519 Common/collective trust funds 48 — — 48 Cash equivalents and other (3) 7 — — 7 Total $ 1,659 $ 943 $ (11 ) (4) $ 2,591 December 31, 2018 Equity securities: (1) U.S. $ 858 $ 751 $ (24 ) $ 1,585 Fixed income securities: (2) Corporate debt instruments 224 2 (5 ) 221 Government securities 504 7 (5 ) 506 Common/collective trust funds 51 — — 51 Cash equivalents and other (3) 6 — — 6 Total $ 1,643 $ 760 $ (34 ) (4) $ 2,369 (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 $7 million and $6 million at March 31, 2019 and December 31, 2018, respectively. (4) The fair value of securities in an unrealized loss position was $178 million and $404 million at March 31, 2019 and December 31, 2018, respectively. 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 March 31, (millions) 2019 2018 Net gains (losses) recognized during the period $ 186 $ (32 ) Less: Net gains recognized during the period on securities sold during the period (1 ) (15 ) Unrealized gains (losses) recognized during the period on securities still held at March 31, 2019 and 2018 (1) $ 185 $ (47 ) (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 March 31, 2019 by contractual maturity is as follows: Amount (millions) Due in one year or less $ 77 Due after one year through five years 145 Due after five years through ten years 219 Due after ten years 359 Total $ 800 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 March 31, 2019 2018 (millions) Proceeds from sales $ 253 $ 218 Realized gains (1) 10 18 Realized losses (1) 9 5 (1) Includes realized gains and losses recorded to the nuclear decommissioning trust regulatory liability. Other-than-temporary impairment losses on investments held in nuclear decommissioning trust funds recognized in earnings for Virginia Power were immaterial for the three months ended March 31, 2019 and 2018. Equity Method Investments Dominion Energy Atlantic Coast Pipeline In September 2014, Dominion Energy, along with Duke and Southern Company Gas, announced the formation of Atlantic Coast Pipeline. The Atlantic Coast Pipeline partnership agreement includes provisions to allow Dominion Energy an option to purchase additional ownership interest in Atlantic Coast Pipeline to maintain a leading ownership percentage. As of March 31, 2019, the members hold the following membership interests: Dominion Energy, 48%; Duke, 47%; and Southern Company Gas, 5%. Atlantic Coast Pipeline is focused on constructing an approximately 600-mile three 20-year 10-K , as updated in Current Report on Form 8-K, filed November 18, 2019, Dominion Energy recorded contributions of $95 million and $78 million during the three months ended March 31, 2019 and 2018, respectively, to Atlantic Coast Pipeline. At March 31, 2019, Dominion Energy had $32 million of contributions payable to Atlantic Coast Pipeline included within other current liabilities in the Consolidated Balance Sheets. DETI provides services to Atlantic Coast Pipeline which totaled $31 million and $46 million for the three months ended March 31, 2019 and 2018, respectively, included in operating revenue in Dominion Energy and Dominion Energy Gas’ Consolidated Statements of Income. Amounts receivable related to these services were $11 million and $13 million at March 31, 2019 and December 31, 2018, respectively, composed entirely of accrued unbilled revenue, included in other receivables in Dominion Energy and Dominion Energy Gas’ Consolidated Balance Sheets. In October 2017, Dominion Energy entered into a guarantee agreement to support a portion of Atlantic Coast Pipeline’s obligation under its credit facility. See Note 17 for more information. During the third and fourth quarters of 2018, a FERC stop work order together with delays in obtaining permits necessary for construction along with construction delays due to judicial actions impacted the cost and schedule for the project. As a result project cost estimates have increased from between $6.0 billion to $6.5 billion to between $7.0 billion to $7.5 billion, excluding financing costs. Atlantic Coast Pipeline expects to achieve a late 2020 in-service remainder may extend into early 2021. Alternatively, if it takes longer to resolve the judicial issues, such as through appeal to the Supreme Court of the U.S., full in-service Blue Racer In the first quarter of 2019, Dominion Energy received $151 million of additional consideration, including applicable interest, in connection with the sale of Dominion Energy’s 50% limited partnership interest in Blue Racer in December 2018, as discussed in Note 9 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K , as updated in Current Report on Form 8-K, filed November 18, 2019. Dominion Energy Gas Iroquois and White River Hub Dominion Energy Gas’ equity earnings totaled $13 million and $20 million for the three months ended March 31, 2019 and 2018, respectively. Dominion Energy Gas received distributions of $15 million for each of the three months ended March 31, 2019 and 2018. At March 31, 2019 and December 31, 2018, the carrying amount of Dominion Energy Gas’ investment of $337 million and $339 million, respectively, exceeded its share of underlying equity in net assets by $146 million. The difference reflects equity method goodwill and is not being amortized.

Property Plant and Equipment

Property Plant and Equipment	Nov. 18, 2019
Property, Plant and Equipment [Abstract]
Property Plant and Equipment	Note 11. Property, Plant and Equipment Virginia Power Acquisition of Solar Projects In February 2019, Virginia Power completed the acquisition of a solar development project in Virginia. The facility commenced commercial operations in April 2019, generating 20 37 In August 2018, Virginia Power entered into agreements to acquire two solar development projects in North Carolina and Virginia. The first acquisition is expected to close prior to the project commencing commercial operations, which is expected by the end of 2019, and cost approximately $120 million once constructed, including the initial acquisition cost. The second acquisition was completed in March 2019. The project is expected to commence commercial operations by the end of 2020 and cost approximately $ 130 155 Dominion Energy Gas Assignment of Shale Development Rights In November 2014, Dominion Energy Gas closed an agreement with a natural gas producer to convey over time approximately 24,000 50 28 20 after-tax) In March 2018, Dominion Energy Gas closed an agreement with a natural gas producer to convey approximately 11,000 acres of Utica and Point Pleasant Shale development rights underneath one 16 16 16 12 after-tax)

Regulatory Assets and Liabiliti

Regulatory Assets and Liabilities	Nov. 18, 2019
Regulated Operations [Abstract]
Regulatory Assets and Liabilities	Note 12. Regulatory Assets and Liabilities Regulatory assets and liabilities include the following: March 31, 2019 December 31, 2018 (millions) Dominion Energy Regulatory assets: Deferred cost of fuel used in electric generation (1) $ 117 $ 174 Deferred rate adjustment clause costs for Virginia electric utility (2)(3) 90 78 Deferred nuclear refueling outage costs (4) 70 69 Unrecovered NND Project costs (5) 138 — PJM transmission rates (6) 64 45 Other 246 130 Regulatory assets-current 725 496 Deferred cost of fuel used in electric generation (1) 123 83 Unrecognized pension and other postretirement benefit costs (7) 1,521 1,497 Deferred rate adjustment clause costs for Virginia electric utility (2)(3)(8) 194 230 Deferred project costs for gas utilities (9) 440 335 PJM transmission rates (6) 174 192 Interest rate hedges (10) 563 184 AROs and related funding (11) 350 — Cost of reacquired debt (12)(13) 203 3 Unrecovered NND Project costs (5) 2,607 — Ash pond and landfill closure costs (14) 935 27 Other 465 125 Regulatory assets-noncurrent 7,575 2,676 Total regulatory assets $ 8,300 $ 3,172 Regulatory liabilities: Provision for future cost of removal and AROs (15) $ 117 $ 117 Reserve for refunds and rate credits to electric utility customers (16) 137 71 Cost-of-service (17) 93 104 Income taxes refundable through future rates (18) 127 — Monetization of guarantee settlement (19) 67 — Other 71 64 Regulatory liabilities-current 612 356 Income taxes refundable through future rates (18) 5,034 4,071 Provision for future cost of removal and AROs (15) 2,222 1,409 Nuclear decommissioning trust (20) 1,247 1,070 Monetization of guarantee settlement (19) 1,020 — Reserve for refunds and rate credits to electric utility customers (16) 846 — Overrecovered other postretirement benefit costs (21) 129 120 Other 301 170 Regulatory liabilities-noncurrent 10,799 6,840 Total regulatory liabilities $ 11,411 $ 7,196 (1) Reflects deferred fuel expenses for the Virginia, North Carolina and South Carolina jurisdictions of Dominion Energy’s electric generation operations. (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, net of income taxes refundable from the 2017 Tax Reform Act for Virginia Power. See Note 13 for more information. (3) As a result of actions from the Virginia Commission in the first quarter of 2019 regarding the ratemaking treatment of excess deferred taxes from the adoption of the 2017 Tax Reform Act for all existing rate adjustment clauses, Virginia Power recorded a $29 million ($22 million after-tax) (4) 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. (5) Reflects expenditures by DESC associated with the NND Project, which pursuant to the SCANA Merger Approval Order, will be recovered from DESC electric service customers over a 20-year (6) Reflects amounts to be recovered through retail rates in Virginia for payments Virginia Power will make to PJM over a ten (7) 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. (8) During the first quarter of 2019, Virginia Power recorded a charge of $17 million ($13 million after-tax) write-off (9) Primarily reflects amounts expected to be collected from or owed to gas customers in Dominion Energy’s service territories associated with current and prospective rider projects, including CEP, PIR, and pipeline integrity management. See Note 13 for more information. (10) 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 30 years. (11) Represents deferred depreciation and accretion expense related to legal obligations associated with the future retirement of property, plant and equipment, excluding amounts related to CCRs, for DESC and PSNC. The AROs primarily relate to nuclear decommissioning activities and are expected to be recovered over the related property lives and periods of decommissioning which may range up to approximately 106 years. (12) Cost of the reacquisition of debt are deferred and amortized as interest expense over the would-be (13) In March 2019, DESC purchased certain of its first mortgage bonds having an aggregate purchase price of $1.2 billion, as discussed in Note 16. As a result of this transaction, Dominion Energy incurred costs, including write-off (14) Primarily reflects legislation enacted in Virginia in March 2019 which requires any CCR unit located at certain Virginia Power stations to be closed by removing the CCRs to an approved landfill or through recycling for beneficial reuse. See Note 17 for additional information. (15) 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. (16) Reflects amounts previously collected from retail electric customers of DESC for the NND Project to be credited over an estimated 11-year one-time 10-K , as updated in Current Report on Form 8-K, filed November 18, 2019, (17) Balance refundable to customers related to the decrease in revenue requirements for recovery of income taxes at the Companies’ regulated electric generation and electric and natural gas distribution operations. See Notes 3 and 13 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K , as updated in Current Report on Form 8-K, filed November 18, 2019, (18) 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. (19) Reflects amounts to be refunded to DESC electric service customers over a 20-year (20) 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. (21) Reflects a regulatory liability for the collection of postretirement benefit costs allowed in rates in excess of expense incurred. March 31, 2019 December 31, 2018 (millions) Virginia Power Regulatory assets: Deferred cost of fuel used in electric generation (1) $ 112 $ 174 Deferred rate adjustment clause costs (2)(3) 90 78 Deferred nuclear refueling outage costs (4) 70 69 PJM transmission rates (5) 64 45 Other 51 58 Regulatory assets-current (6) 387 424 Deferred rate adjustment clause costs (2)(3)(7) 194 230 PJM transmission rates (5) 174 192 Interest rate hedges (8) 235 151 Deferred cost of fuel used in electric generation (1) 123 83 Ash pond and landfill closure costs (9) 935 27 Other 58 54 Regulatory assets-noncurrent 1,719 737 Total regulatory assets $ 2,106 $ 1,161 Regulatory liabilities: Provision for future cost of removal (10) $ 92 $ 92 Cost-of-service (11) 88 95 Reserve for rate credits to electric utility customers (12) — 71 Income taxes refundable through future rates (13) 74 — Other 27 41 Regulatory liabilities-current 281 299 Income taxes refundable through future rates (13) 2,500 2,579 Nuclear decommissioning trust (14) 1,247 1,070 Provision for future cost of removal (10) 959 940 Other 102 58 Regulatory liabilities-noncurrent 4,808 4,647 Total regulatory liabilities $ 5,089 $ 4,946 (1) Reflects deferred fuel expenses for the Virginia and North Carolina jurisdictions of Virginia Power’s generation operations. (2) Primarily reflects deferrals under Virginia Power’s electric transmission FERC formula rate and the deferral of costs associated with certain current and prospective rider projects, net of income taxes refundable from the 2017 Tax Reform Act for Virginia Power. See Note 13 for more information. (3) As a result of actions from the Virginia Commission in the first quarter of 2019 regarding the ratemaking treatment of excess deferred taxes from the adoption of the 2017 Tax Reform Act for all existing rate adjustment clauses, Virginia Power recorded a $29 million ($22 million after-tax) (4) 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. (5) Reflects amounts to be recovered through retail rates in Virginia for payments Virginia Power will make to PJM over a ten (6) Current regulatory assets are presented in other current assets in Virginia Power’s Consolidated Balance Sheets. (7) During the first quarter of 2019, Virginia Power recorded a charge of $17 million ($13 million after-tax) write-off (8) 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 21 years. (9) Primarily reflects legislation enacted in Virginia in March 2019 which requires any CCR unit located at certain Virginia Power stations to be closed by removing the CCR to an approved landfill or through recycling for beneficial reuse. See Note 17 for additional information. (10) 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. (11) Balance refundable to customers related to the decrease in revenue requirements for recovery of income taxes at regulated electric generation and distribution operations. See Note 13 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K , as updated in Current Report on Form 8-K, filed November 18, 2019, (12) Charge associated with Virginia legislation enacted in March 2018 that required one-time 10-K , as updated in Current Report on Form 8-K, filed November 18, 2019, (13) 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. (14) 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. March 31, 2019 December 31, 2018 (millions) Dominion Energy Gas Regulatory assets: Unrecovered gas costs (1) $ 1 $ 1 Other 7 7 Regulatory assets-current (2) 8 8 Unrecognized pension and other postretirement benefit costs (3) 16 15 Interest rate hedges (4) 33 33 Other 3 4 Regulatory assets-noncurrent (5) 52 52 Total regulatory assets $ 60 $ 60 Regulatory liabilities: Provision for future cost of removal and AROs (6) $ 10 $ 9 Overrecovered gas costs (1) 7 7 Other 12 8 Regulatory liabilities-current (7) 29 24 Income taxes refundable through future rates (8) 572 530 Provision for future cost of removal and AROs (6) 115 113 Overrecovered other postretirement benefit costs (9) 113 106 Other 16 16 Regulatory liabilities-noncurrent 816 765 Total regulatory liabilities $ 845 $ 789 (1) Reflects unrecovered or overrecovered gas costs at regulated gas operations, which are recovered or refunded through filings with the applicable regulatory authority. (2) Current regulatory assets are presented in other current assets in Dominion Energy Gas’ Consolidated Balance Sheets. (3) 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 Gas’ rate-regulated subsidiaries. (4) 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 30 years. (5) Noncurrent regulatory assets are presented in other deferred charges and other assets in Dominion Energy Gas’ Consolidated Balance Sheets. (6) Rates charged to customers by Dominion Energy Gas’ 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. (7) Current regulatory liabilities are presented in other current liabilities in Dominion Energy Gas’ Consolidated Balance Sheets. (8) 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. (9) Reflects a regulatory liability for the collection of postretirement benefit costs allowed in rates in excess of expense incurred. At March 31, 2019, $1.5 billion of Dominion Energy’s, $295 million of Virginia Power’s and $42 million of Dominion Energy Gas’ regulatory assets represented past expenditures on which they do not currently earn a return. With the exception of the items discussed above, the majority of these expenditures are expected to be recovered within the next two

Regulatory Matters

Regulatory Matters	Nov. 18, 2019
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. FERC - Electric Under the Federal Power Act, FERC regulates wholesale sales and transmission of electricity in interstate commerce by public utilities. Virginia Power purchases and, under its market based rate authority, sells electricity in the PJM wholesale market and to wholesale purchasers in Virginia and North Carolina. DESC sells electricity to wholesale purchasers in its balancing authority area under its electric cost based tariff and to wholesale purchasers outside of its balancing authority area under its market based rate authority. Dominion Energy’s merchant generators sell electricity in the PJM, CAISO and ISO-NE Rates In April 2008, FERC granted an application for Virginia Power’s electric transmission operations to establish a forward-looking formula rate mechanism that updates transmission rates on an annual basis and approved an ROE effective as of January 1, 2008. The formula rate is designed to recover the expected revenue requirement for each calendar year and is updated based on actual costs. The FERC-approved formula method, which is based on projected costs, allows Virginia Power to earn a current return on its investment in electric transmission infrastructure. In March 2010, ODEC and North Carolina Electric Membership Corporation filed a complaint with FERC against Virginia Power claiming, among other issues, that the incremental costs of undergrounding certain transmission line projects were unjust, unreasonable and unduly discriminatory or preferential and should be excluded from Virginia Power’s transmission formula rate. A settlement of the other issues raised in the complaint was approved by FERC in May 2012. In March 2014, FERC issued an order excluding from Virginia Power’s transmission rates for wholesale transmission customers located outside Virginia the incremental costs of undergrounding certain transmission line projects. FERC found it is not just and reasonable for non-Virginia In October 2017, FERC issued an order determining the calculation of the incremental costs of undergrounding the transmission projects and affirming that the costs are to be recovered from the wholesale transmission customers with loads located in Virginia. FERC directed Virginia Power to rebill all wholesale transmission customers retroactively to March 2010 within 30 days of when the proceeding becomes final and no longer subject to rehearing. In November 2017, Virginia Power, North Carolina Electric Membership Corporation and the wholesale transmission customers filed petitions for rehearing. In July 2018, FERC denied the rehearing requests related to the October 2017 order determining the calculation of the undergrounding costs. Several parties have appealed FERC’s decision to the U.S. Court of Appeals for the D.C. Circuit. This matter is pending. While Virginia Power cannot predict the outcome of the matter, it is not expected to have a material effect on results of operations. In January 2019, FERC issued an order denying PJM’s request to waive certain provisions of the PJM Tariff regarding the liquidation of a portfolio of FTRs owned by GreenHat who had defaulted on its financial obligations. As a result of FERC’s order, PJM is required to use the existing tariff provisions to liquidate GreenHat’s FTR portfolio and allocate the resulting costs to PJM members. In February 2019, PJM filed a request for clarification and rehearing with FERC. Also in February 2019, Virginia Power and certain other PJM members filed a request for rehearing with FERC. While the impacts of this order could be material to Virginia Power’s results of operations, financial condition and/or cash flows, the existing regulatory framework in Virginia provides rate recovery mechanisms that could substantially mitigate any such impacts. FERC – Gas DETI In July 2017, FERC audit staff communicated to DETI that it had substantially completed an audit of DETI’s compliance with the accounting and reporting requirements of FERC’s Uniform System of Accounts and provided a description of matters and preliminary recommendations. In November 2017, the FERC audit staff issued its audit report which could have the potential to result in adjustments which could be material to Dominion Energy and Dominion Energy Gas’ results of operations. In December 2017, DETI provided its response to the audit report. DETI reached resolution of certain matters with FERC in the fourth quarter of 2018. Pending final resolution of the audit process and a determination by FERC, management is unable to estimate the potential impact of the remaining finding and no amounts have been recognized. 2017 Tax Reform Act Other than the items discussed below, which are pending or have been resolved during the period, there have been no changes to the 2017 Tax Reform Act matters discussed in Notes 3 and 13 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K , as updated in Current Report on Form 8-K, filed November 18, 2019. In January 2019, Virginia Power filed updated testimony in response to the Virginia Commission’s September 2018 order with a proposed annual revenue reduction of approximately $171 million. Additionally, Virginia Power proposed to issue a one-time true-up one-time In October 2018, the North Carolina Commission issued an order requesting companies file to reduce base rates expeditiously. Virginia Power made its compliance filing in October 2018 and submitted an annual base rate revenue decrease of approximately $14 million effective in early 2019. Virginia Power also proposed to issue a one-time one-time In March 2019, Questar Gas filed with the Utah and Wyoming Commissions as to the impact of excess deferred income taxes resulting from the 2017 Tax Reform Act. Questar Gas proposed to return the 2018 amortization of excess deferred income taxes to customers and to incorporate the remaining excess deferred income tax impact in its next general rate cases in each jurisdiction. This matter is pending. In October 2018, the Ohio Commission issued an order requiring rate-regulated utilities to file an application reflecting the impact of the 2017 Tax Reform Act on current rates by January 1, 2019. In December 2018, East Ohio filed its application proposing an approach to establishing rates and charges by and through which to return tax reform benefits to its customers. This case is pending. In March 2018, FERC announced actions to address the income tax allowance component of regulated entities’ cost-of-service one-time 501-G cost-of-service During 2018, Dominion Energy’s FERC-regulated pipelines, including those accounted for as equity method investments, filed the Form 501-G 501-G Other Regulatory Matters Other than the following matters, there have been no significant developments regarding the pending regulatory matters disclosed in Notes 3 and 13 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K , as updated in Current Report on Form 8-K, filed November 18, 2019. Virginia Regulation Regulation Act In March 2019, Virginia Power filed an application for the Virginia Commission to determine the general ROE for Virginia Power’s non-transmission review for the four successive 12-month Solar Facility Projects In July 2018, Virginia Power applied for approval of Rider US-3 Rate Adjustment Clauses Below is a discussion of significant riders associated with various Virginia Power projects: • The Virginia Commission previously approved Rider U in conjunction with cost recovery to move certain electric distribution facilities underground as authorized by Virginia legislation. In March 2019, Virginia Power requested approval of its fourth phase of conversions totaling $123 million. Virginia Power also proposed a total $52 million revenue requirement for the rate year beginning February 1, 2020 for continuing recovery of the previously approved phase conversions and the proposed fourth phase conversions. This matter is pending. • The Virginia Commission previously approved Riders C1A and C2A in connection with cost recovery for DSM programs. In October 2018, Virginia Power requested approval to implement ten new energy efficiency programs and one new demand-response DSM program for five years, subject to future extensions, with a $262 million cost cap, and proposed a total $49 million revenue requirement for the rate year beginning July 1, 2019, which represents an $18 million increase over the previous year. In May 2019, the Virginia Commission approved a total revenue requirement of $49 million, subject to true-up Electric Transmission Projects In November 2013, the Virginia Commission issued an order granting Virginia Power a CPCN to construct approximately 7 miles of new overhead 500 kV transmission line from the existing Surry switching station in Surry County to a new Skiffes Creek switching station in James City County, and approximately 20 miles of new 230 kV transmission line in James City County, York County, and the City of Newport News from the proposed new Skiffes Creek switching station to Virginia Power’s existing Whealton substation in the City of Hampton. In February 2019, the transmission line project was placed into service. In March 2019, the U.S. Court of Appeals for the D.C. Circuit issued an order vacating the permit from the U.S. Army Corps of Engineers issued in July 2017 and ordered the U.S. Army Corps of Engineers to do a full environmental impact study of the project. In April 2019, Virginia Power and the U.S. Army Corps of Engineers filed petitions for rehearing with the U.S. Court of Appeals for the D.C. Circuit, asking that the permit from the U.S. Army Corps of Engineers remain in effect while an environmental impact study is performed. The mandate making the U.S. Court of Appeals for the D.C. Circuit’s March order effective will not be issued until May 2019 at the earliest and may be revised based on the petitions for rehearing. This matter is pending. Additional Virginia Power electric transmission projects approved or applied for in 2019 are as follows: Description and Location of Project Application Date Approval Date Type of Line Miles of Lines Cost Estimate (millions) Partial rebuild of overhead transmission lines in Alleghany County, Virginia and Covington, Virginia August 2018 April 2019 138 kV 5 $ 15 Rebuild and operate between Lanexa and the Northern Neck in Virginia June 2018 February 2019 230 kV 3 30 Rebuild and operate the Glebe substation and relocate and operate in Arlington County, Virginia and the City of Alexandria, Virginia existing overhead line underground March 2019 Pending 230 kV <1 125 Rebuild and operate between Valley, Virginia and Mt. Storm, West Virginia April 2019 Pending 500 kV 65 290 North Carolina Regulation North Carolina Base Rate Case In March 2019, Virginia Power filed its base rate case and schedules with the North Carolina Commission. Virginia Power proposed a non-fuel, South Carolina Regulation DSM Programs DESC has approval for a DSM rider through which it recovers expenditures related to its DSM programs. In January 2019, DESC filed an application with the South Carolina Commission seeking approval to recover $30 million of costs and net lost revenues associated with these programs, along with an incentive to invest in such programs. In April 2019, the South Carolina Commission approved the request for the rate year beginning with the first billing cycle of May 2019. Ohio Regulation PIR Program In 2008, East Ohio began PIR, aimed at replacing approximately 25% of its pipeline system. In April 2019, the Ohio Commission approved East Ohio’s application to adjust the PIR cost recovery for 2018 costs. The filing reflects a gross plant investment for 2018 of $202 million, cumulative gross plant investment of $1.6 billion and a revenue requirement of $190 million. AMR Program In 2007, East Ohio began installing automated meter reading technology for its 1.2 million customers in Ohio. In April 2019, the Ohio Commission approved East Ohio’s application to adjust the AMR cost recovery for 2018 costs. The filing reflects a revenue requirement of $4 million. CEP Program In 2011, East Ohio began CEP which enables East Ohio to defer depreciation expense, property tax expense and carrying costs at the debt rate of 6.5% on capital investments not covered by its PIR program to expand, upgrade or replace its pipeline system and information technology systems as well as investments necessary to comply with the Ohio Commission or other government regulation. In May 2019, East Ohio filed an application for an alternative rate plan to establish a CEP rider to recover existing CEP-related Utah and Wyoming Regulation In April 2019, Questar Gas filed a request with the Utah Commission for pre-approval pre-approval pre-approval FERC – Gas In February 2019, Cove Point submitted ​​​​​​​its annual electric power cost adjustment to FERC requesting approval to recover $24 million. FERC approved the adjustment in March 2019.

Leases

Leases	Nov. 18, 2019
Leases [Abstract]
Leases	Note 14. Leases​​​​​​​ At March 31, 2019, the Companies had the following lease assets and liabilities recorded in the Consolidated Balance Sheets: March 31, 2019 (millions) Dominion Energy Lease assets: Operating lease assets $ 486 Finance lease assets (1) 79 Total lease assets $ 565 Lease liabilities: Operating lease liabilities (2) $ 62 Finance lease liabilities (3) 14 Total lease liabilities - current 76 Operating lease liabilities 418 Finance lease liabilities (4) 66 Total lease liabilities - noncurrent 484 Total lease liabilities $ 560 Virginia Power Operating lease assets $ 202 Finance lease assets (1) 8 Total lease assets $ 210 Lease liabilities: Operating lease liabilities (2) $ 33 Finance lease liabilities (3) 2 Total lease liabilities - current 35 Operating lease liabilities 169 Finance lease liabilities (4) 5 Total lease liabilities - noncurrent 174 Total lease liabilities $ 209 Dominion Energy Gas Operating lease assets $ 41 Finance lease assets (1) 1 Total lease assets (5) $ 42 Lease liabilities: Operating lease liabilities (2) $ 6 Finance lease liabilities (3) — Total lease liabilities - current 6 Operating lease liabilities 33 Finance lease liabilities (4) 2 Total lease liabilities - noncurrent 35 Total lease liabilities (5) $ 41 (1) Included in property, plant and equipment in the Companies’ Consolidated Balance Sheets, net of $29 million, $2 million and $1 million of accumulated amortization at Dominion Energy, Virginia Power and Dominion Energy Gas, respectively, at March 31, 2019. (2) Included in other current liabilities in the Companies’ Consolidated Balance Sheets. (3) Included in securities due within one year in the Companies’ Consolidated Balance Sheets. (4) Included in long-term debt in the Companies’ Consolidated Balance Sheets. (5) Excludes $25 million of lease assets recorded in assets of discontinued operations and $25 million of lease liabilities recorded in liabilities of discontinued operations. In addition to the amounts disclosed above, Dominion Energy’s Consolidated Balance Sheet at March 31, 2019 includes property, plant and equipment and accumulated depreciation of $2.8 billion and $294 million, respectively, related to facilities subject to power purchase agreements under which Dominion Energy is the lessor. For the three months ended March 31, 2019, total lease cost associated with the Companies’ lessee leasing arrangements consisted of the following: Three Months Ended March 31, 2019 (millions) Dominion Energy Finance lease cost: Amortization $ 3 Interest 1 Operating lease cost 25 Short-term lease cost 6 Variable lease cost 2 Total lease cost $ 37 Virginia Power Operating lease cost $ 10 Short-term lease cost 2 Variable lease cost 1 Total lease cost $ 13 Dominion Energy Gas Operating lease cost $ 2 Short-term lease cost 1 Total lease cost $ 3 For the three months ended March 31, 2019, cash paid for amounts included in the measurement of lease liabilities consisted of the following amounts, included in the Companies’ Consolidated Statements of Cash Flows: Three Months Ended March 31, 2019 (millions) Dominion Energy Operating cash flows for finance leases $ 1 Operating cash flows for operating leases 32 Financing cash flows for finance leases 3 Virginia Power Operating cash flows for operating leases 13 Dominion Energy Gas Operating cash flows for operating leases 3 In addition to the amounts disclosed above, Dominion Energy’s Consolidated Statement of Income for the three months ended March 31, 2019 includes $29 million and $23 million of rental revenue and depreciation expense, included in operating revenue and depreciation, depletion and amortization, respectively, related to facilities subject to power purchase agreements under which Dominion Energy is the lessor. At March 31, 2019, the weighted average remaining lease term and weighted discount rate for the Companies’ finance and operating leases were as follows: March 31, 2019 Dominion Energy Weighted average remaining lease term - finance leases 7 years Weighted average remaining lease term - operating leases 21 years Weighted average discount rate - finance leases 4.66 % Weighted average discount rate - operating leases 4.61 % Virginia Power Weighted average remaining lease term - finance leases 6 years Weighted average remaining lease term - operating leases 16 years Weighted average discount rate - finance leases 4.99 % Weighted average discount rate - operating leases 4.47 % Dominion Energy Gas Weighted average remaining lease term - finance leases 6 years Weighted average remaining lease term - operating leases 9 years Weighted average discount rate - finance leases 5.04 % Weighted average discount rate - operating leases 4.44 % The Companies’ lease liabilities have the following scheduled maturities: Maturity of Lease Liabilities Dominion Energy Virginia Power Dominion Energy Gas (1) (millions) Operating Finance Operating Finance Operating Finance 2019 $ 54 $ 14 $ 30 $ 2 $ 11 $ 1 2020 66 16 36 1 13 1 2021 58 14 31 1 11 1 2022 49 12 24 1 9 1 2023 39 9 19 1 6 - After 2023 532 33 162 2 24 1 Total undiscounted lease payments 798 98 302 8 74 5 Present value adjustment (318 ) (18 ) (100 ) (1 ) (13 ) (1 ) Present value of lease liabilities $ 480 $ 80 $ 202 $ 7 $ 61 $ 4 (1) Includes amounts reflected in discontinued operations. Future Leasing Arrangement 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 is providing equity and has obtained financing commitments from debt investors, totaling $365 million, to fund the estimated project costs. The project is expected to be substantially completed in the second quarter of 2019. Dominion Energy has been appointed to act as the construction agent for the lessor, during which time Dominion Energy will request cash draws from the lessor and debt investors to fund all project costs, which totaled $310 million at March 31, 2019. If the project is terminated under certain events of default, Dominion Energy could be required to pay up to 89.9% of the then funded amount. For specific full recourse events, Dominion Energy could be required to pay up to 100% of the then funded amount. The five-year

Variable Interest Entities

Variable Interest Entities	Nov. 18, 2019
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 15 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K , as updated in Current Report on Form 8-K, filed November 18, 2019. Dominion Energy At March 31, 2019 and December 31, 2018, Dominion Energy’s securities due within one year includes $29 million and $31 million, respectively, and long-term debt includes $301 million and $299 million, respectively, of debt issued by SBL Holdco, a VIE, net of issuance costs, that is nonrecourse to Dominion Energy and is secured by SBL Holdco’s interest in certain merchant solar facilities. Virginia Power Virginia Power has long-term power and capacity contracts with one non-utility non-utility Dominion Energy Gas Dominion Energy Gas purchased shared services from DECGS and DEQPS of $4 million and $8 million for the three months ended March 31, 2019 and $4 million and $7 million for the three months ended March 31, 2018, respectively. Dominion Energy Gas’ Consolidated Balance Sheets included amounts due to DECGS and DEQPS of $5 million and $6 million at March 31 Virginia Power and Dominion Energy Gas Virginia Power and Dominion Energy Gas purchased shared services from DES, an affiliated VIE, of $89 million and $28 million for the three months ended March 31, 2019 and $89 million and $28 million for the three months ended March 31, 2018, respectively. Virginia Power’s Consolidated Balance Sheets included amounts due to DES of $22 million and $107 million ,

Significant Financing Transacti

Significant Financing Transactions	Nov. 18, 2019
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. Dominion Energy At March 31, 2019, 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 $ 2,393 $ 90 $ 3,517 (1) This credit facility matures in March 2023 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. In addition to the credit facility mentioned above, Dominion Energy also has a credit facility with a maturity date in June 2020 In March 2019, DESC’s existing $700 million credit facility was terminated and DESC was added as a borrower to the joint revolving credit facility discussed above with Dominion Energy, Virginia Power, Dominion Energy Gas and Questar Gas. At March 31, 2019, the sub-limit South Carolina Fuel Company, Inc.’s existing credit facility was terminated in February 2019. SCANA and PSNC’s existing credit facilities were terminated in March 2019. Liquidity needs for these entities may be satisfied through short-term intercompany borrowings from Dominion Energy. In addition to the credit facilities mentioned above, SBL Holdco has $30 million of credit facilities which had an original stated maturity date of December 2017 with automatic one one In February 2019, Dominion Energy Midstream terminated its $500 million revolving credit facility subsequent to repaying the outstanding balance of $73 million, plus accrued interest. Virginia Power Virginia Power’s short-term financing is supported through its access as co-borrower At March 31, 2019, Virginia Power’s share of commercial paper and letters of credit outstanding under its joint credit facility with Dominion Energy, Dominion Energy Gas, 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 $ 595 $ 16 (1) The full amount of the facility is available to Virginia Power, less any amounts outstanding to co-borrowers sub-limit sub-limit sub-limit, sub-limit sub-limit, Dominion Energy Gas Dominion Energy Gas’ short-term financing is supported through its access as co-borrower At March 31, 2019, Dominion Energy Gas’ share of commercial paper and letters of credit outstanding under its joint credit facility with Dominion Energy, Virginia Power, Questar Gas and DESC was as follows: Facility Limit (1) Outstanding Commercial Paper Outstanding Letters of Credit (millions) Joint revolving credit facility (1) $ 1,500 $ 280 $ — (1) A maximum of $1.5 billion of the facility is available to Dominion Energy Gas, assuming adequate capacity is available after giving effect to uses by co-borrowers sub-limit sub-limit sub-limit, sub-limit sub-limit, In February 2019, Dominion Energy Midstream terminated its $500 million revolving credit facility subsequent to repaying the outstanding balance of $73 million, plus accrued interest. 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 February 2019, Dominion Energy Midstream repaid its $300 million variable rate term loan agreement due in December 2019 at the principal outstanding plus accrued interest. In February and March 2019, DESC purchased certain of its first mortgage bonds having an aggregate purchase price of $1.2 billion pursuant to tender offers. Also in March 2019, SCANA purchased certain of its medium term notes having an aggregate purchase price of $300 million pursuant to a tender offer. Both DESC tender offers and the SCANA tender offer expired in the first quarter of 2019. In March 2019, Dominion Energy issued $400 million of 4.60% senior notes that mature in 2049. In March 2019, Dominion Energy issued an additional $200 million of its 4.25% senior notes that mature in 2028. In April 2019, Virginia Power provided notice to redeem its $40 million 5.0% Economic Development Authority of the County of Chesterfield Pollution Control Refunding Revenue Bonds, Series 2009A, due in 2023. At March 31, 2019, the bonds were included in securities due within one year in the Consolidated Balance Sheets. The bonds were redeemed in May 2019 at the principal outstanding plus accrued interest. Noncontrolling Interest in Dominion Energy Midstream In January 2019, Dominion Energy and Dominion Energy Midstream closed on an agreement and plan of merger pursuant to which Dominion Energy acquired each outstanding common unit representing limited partner interests in Dominion Energy Midstream not already owned by Dominion Energy through the issuance of 22.5 million shares of common stock valued at $1.6 billion. Under the terms of the agreement and plan of merger, each publicly held outstanding common unit representing limited partner interests in Dominion Energy Midstream was converted into the right to receive 0.2492 shares of Dominion Energy common stock. Immediately prior to the closing, each Series A Preferred Unit representing limited partner interests in Dominion Energy Midstream was converted into common units representing limited partner interests in Dominion Energy Midstream in accordance with the terms of Dominion Energy Midstream’s partnership agreement. The merger was accounted for by Dominion Energy following the guidance for a change in a parent company’s ownership interest in a consolidated subsidiary. Because Dominion Energy controls Dominion Energy Midstream both before and after the merger, the changes in Dominion Energy’s ownership interest in Dominion Energy Midstream were accounted for as an equity transaction and no gain or loss was recognized. In connection with the merger, Dominion Energy recognized $40 million of income taxes in equity primarily attributable to establishing additional regulatory liabilities related to excess deferred income taxes and changes in state income taxes. Subsequent to this activity, as a result of the Dominion Energy Gas Restructuring, Dominion Energy Gas is considered to have acquired all of the outstanding partnership interests of Dominion Energy Midstream and Dominion Energy Midstream became a wholly-owned subsidiary of Dominion Energy Gas. Issuance of Common Stock See Note 3 to the Consolidated Financial Statements for information on the issuance of Dominion Energy common stock in January 2019 in connection with the SCANA Combination. Also in January 2019, Dominion Energy acquired all outstanding partnership interests of Dominion Energy Midstream not owned by Dominion Energy through the issuance of common stock as noted above. At-the-Market Dominion Energy has an at-the-market 10-K , as updated in Current Report on Form 8-K, filed November 18, 2019. at-the-market

Commitments and Contingencies

Commitments and Contingencies	Nov. 18, 2019
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. 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 CAA 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 address all 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. MATS The MATS rule requires coal- and oil-fired In June 2017, the DOE issued an order to PJM to direct Virginia Power to operate Yorktown power station’s Units 1 and 2 as needed to avoid reliability issues on the Virginia Peninsula. The order was effective for 90 days and can be reissued upon PJM’s request, if necessary, until required electricity transmission upgrades are completed. Beginning in August 2017, PJM filed requests for 90-day In December 2018, the EPA issued a proposed rule to reverse its previous finding that it is appropriate and necessary to regulate toxic emissions from power plants. However, the emissions standards and other requirements of the MATS rule would remain in place as the EPA is not proposing to remove coal and oil fired power plants from the list of sources that are regulated under MATS. Although litigation of the MATS rule and the outcome of the EPA’s rulemaking are still pending, the regulation remains in effect and Virginia Power is complying with the applicable requirements of the rule and does not expect any adverse impacts to its operations at this time. Ozone Standards In October 2015, the EPA issued a final rule tightening the ozone standard from 75-ppb 70-ppb. X X X mid-2019 X the VDEQ issued a state operating permit that requires either the installation and operation of selective non-catalytic X gas-fired The EPA published final non-attainment Oil and Gas NSPS In August 2012, the EPA issued an NSPS impacting new and modified facilities in the natural gas production and gathering sectors and made revisions to the NSPS for natural gas processing and transmission facilities. These rules establish equipment performance specifications and emissions standards for control of VOC emissions for natural gas production wells, tanks, pneumatic controllers, and compressors in the upstream sector. In June 2016, the EPA issued a new NSPS regulation, for the oil and natural gas sector, to regulate methane and VOC emissions from new and modified facilities in transmission and storage, gathering and boosting, production and processing facilities. All projects which commenced construction after September 2015 are required to comply with this regulation. In October 2018, the EPA published a proposed rule reconsidering and amending portions of the 2016 rule, including but not limited to, the fugitive emissions requirements at well sites and compressor stations. Until the proposed rule is final, Dominion Energy and Dominion Energy Gas are implementing the 2016 regulation. Dominion Energy and Dominion Energy Gas are still evaluating whether potential impacts on results of operations, financial condition and/or cash flows related to this matter will be material. GHG Regulation 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, 2 In addition, the EPA continues to evaluate its policy regarding the consideration of CO 2 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. 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 case-by-case 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. 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 establishes 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 U.S.’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 remains December 2023. The EPA is proposing to complete new rulemaking for these waste streams. While the impacts of this rule could be material to Dominion Energy and Virginia Power’s 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 CERCLA, as amended, provides for immediate response and removal actions coordinated by the EPA in the event of threatened releases of hazardous substances into the environment and authorizes the U.S. government either to clean up sites at which hazardous substances have created actual or potential environmental hazards or to order persons responsible for the situation to do so. Under the CERCLA, as amended, generators and transporters of hazardous substances, as well as past and present owners and operators of contaminated sites, can be jointly, severally and strictly liable for the cost of cleanup. These potentially responsible parties can be ordered to perform a cleanup, be sued for costs associated with an EPA-directed From time to time, Dominion Energy, Virginia Power or Dominion Energy Gas may be identified as a potentially responsible party to a Superfund site. The EPA (or a state) can either allow such a party to conduct and pay for a remedial investigation, feasibility study and remedial action or conduct the remedial investigation and action itself and then seek reimbursement from the potentially responsible parties. These parties can also bring contribution actions against each other and seek reimbursement from their insurance companies. As a result, Dominion Energy, Virginia Power or Dominion Energy Gas may be responsible for the costs of remedial investigation and actions under the Superfund law or other laws or regulations regarding the remediation of waste. 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 22 former manufactured gas plant sites, three of which pertain to Virginia Power and 12 of which pertain to the discontinued operations of Dominion Energy Gas. Studies conducted by other utilities at their former manufactured gas plant sites have indicated that those sites contain coal tar and other potentially harmful materials. None of the former sites with which the Companies are associated is under investigation by any state or federal environmental agency. At one of the former sites, Dominion Energy is conducting a state-approved post closure groundwater monitoring program and an environmental land use restriction has been recorded. In addition, a Virginia Power site has been accepted into a state-based voluntary remediation program. In June 2018, Virginia Power submitted a proposed remedial action plan to remove material from this site at an estimated cost of $18 million. Pending VDEQ approval, Virginia Power expects to begin remedial work at this site in mid-2019. after-tax) See below for discussion on ash pond and landfill closure costs. 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 to which SCANA or DESC were a party to at closing of the SCANA Combination. Dominion Energy intends to vigorously contest the lawsuits, claims and assessments which have been filed or initiated against SCANA and DESC. 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. Ratepayer Class Actions In May 2018, a consolidated complaint against DESC, SCANA and the State of South Carolina was filed in the State Court of Common Pleas in Hampton County, South Carolina (the DESC Ratepayer Case). In September 2018, the court certified this case as a class action. The plaintiffs allege, among other things, that DESC was negligent and unjustly enriched, breached alleged fiduciary and contractual duties and committed fraud and misrepresentation in failing to properly manage the NND Project, and that DESC committed unfair trade practices and violated state anti-trust laws. The plaintiffs sought a declaratory judgment that DESC may not charge its customers for any past or continuing costs of the NND Project, sought to have SCANA and DESC’s assets frozen and all monies recovered from Toshiba Corporation and other sources be placed in a constructive trust for the benefit of ratepayers and sought specific performance of the alleged implied contract to construct the NND Project. In December 2018, the State Court of Common Pleas in Hampton County entered an order granting preliminary approval of a class action settlement and a stay of pre-trial after-tax) In September 2017, a purported class action was filed by Santee Cooper ratepayers against Santee Cooper, DESC, Palmetto Electric Cooperative, Inc. and Central Electric Power Cooperative, Inc. in the State Court of Common Pleas in Hampton County, South Carolina (the Santee Cooper Ratepayer Case). The allegations are substantially similar to those in the DESC Ratepayer Case. The plaintiffs seek a declaratory judgment that the defendants may not charge the purported class for reimbursement for past or future costs of the NND Project. In March 2018, the plaintiffs filed an amended complaint including as additional named defendants, including certain then current and former directors of Santee Cooper and SCANA. In June 2018, Santee Cooper filed a Notice of Petition for Original Jurisdiction with the Supreme Court of South Carolina. In December 2018, Santee Cooper filed its answer to the plaintiffs’ fourth amended complaint and filed cross claims against DESC. This case is pending. Dominion Energy cannot currently estimate the financial statement impacts of this matter, but there could be a material impact to its results of operations, financial condition and/or cash flows. RICO Class Action In January 2018, a purported class action was filed, and subsequently amended, against SCANA, DESC and certain former executive officers in the U.S. District Court for the District of South Carolina. The plaintiff alleges, among other things, that SCANA, DESC and the individual defendants participated in an unlawful racketeering enterprise in violation of RICO and conspired to violate RICO by fraudulently inflating utility bills to generate unlawful proceeds. The DESC Ratepayer Class Action settlement described previously contemplates dismissal of claims by DESC ratepayers in this case against DESC, SCANA and their officers. This case is pending. Dominion Energy cannot currently estimate the financial statement impacts of this matter, but there could be a material impact to its results of operations, financial condition and/or cash flows. Shareholder Derivative Actions In September 2017, a purported 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. 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. The defendants have filed a motion to dismiss the consolidated action in favor of the pending federal derivative action. In February 2019, one action was voluntarily dismissed. This case is pending. Dominion Energy cannot currently estimate the financial statement impacts of this matter, but there could be a material impact to its results of operations, financial condition and/or cash flows. In November 2017, a purported shareholder derivative action was filed against SCANA and certain former executive officers and directors in the U.S. District Court of the District of South Carolina. Another purported shareholder derivative action was filed in the same court against nearly all of these defendants. In January 2018, the U.S. District Court for the District of South Carolina consolidated these suits, and the plaintiffs filed a consolidated amended complaint. The plaintiffs allege, among other things, that the defendants violated their fiduciary duties to shareholders by disseminating false and misleading information about the NND Project, failing to maintain proper internal controls, failing to properly oversee and manage SCANA and that the individual defendants were unjustly enriched in their compensation. In June 2018, the court denied the defendants’ motions to dismiss and in October 2018, the court denied SCANA’s motion to stay all proceedings pending investigation by a Special Litigation Committee, with leave to refile after the SCANA Merger Approval Order was issued. The plaintiffs have agreed to a stay of this action on the condition that defendants file a motion for judgment on the pleadings, which was filed in January 2019. This case is pending. Dominion Energy cannot currently estimate the financial statement impacts of this matter, but there could be a material impact to its results of operations, financial condition and/or cash flows. Merger Actions 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, Dominion Energy removed the case to the U.S. District Court for the District of South Carolina, and filed a Motion to Dismiss in March 2018. In June 2018, the case was remanded back to the State Court of Common Pleas in Lexington County. Dominion Energy appealed the decision to remand to the U.S. Court of Appeals for the Fourth Circuit, where the appeal has been consolidated with a similar appeal in the Metzler lawsuit discussed below and remains pending. In October 2018, the U.S. District Court for the District of South Carolina granted Dominion Energy’s motion to stay pending appeal. This case is pending. Dominion Energy cannot currently estimate the financial statement impacts of this matter, but there could be a material impact to its results of operations, financial condition and/or cash flows. In February 2018, a purported class action was filed against certain former directors of SCANA and DESC and Dominion Energy 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 February 2018, Dominion Energy removed the case to the U.S. District Court for the District of South Carolina, and filed a Motion to Dismiss in March 2018. In August 2018, the case was remanded back to the State Court of Common Pleas in Richland County. Dominion Energy appealed the decision to remand to the U.S. Court of Appeals for the Fourth Circuit, where the appeal has been consolidated with the City of Warren Lawsuit. This case is pending. Dominion Energy cannot currently estimate the financial statement impacts of this matter, but there could be a material impact to its results of operations, financial condition and/or cash flows. Federal Court 10b-5 In September 2017, a purported class action was filed against SCANA and certain former executive officers and directors in the U.S. District Court for the District of South Carolina. Subsequent additional purported class actions were separately filed against all or nearly all of these defendants. In January 2018, the U.S. District Court for the District of South Carolina consolidated these suits, and the plaintiffs filed a consolidated amended complaint in March 2018. The plaintiffs allege, among other things, that the defendants violated §10(b) of the Securities Exchange Act of 1934, as amended, and Rule 10b-5 Employment Class Action and Indemnification In July 2018, a case filed in the U.S. District Court for the District of South Carolina was certified as a class action on behalf of persons who were formerly employed at the NND Project. The plaintiffs allege, among other things, that SCANA, 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 are estimated to be as much as $75 million. DESC as co-owner NND Project would have a 55% proportional share in any damages owed upon the ultimate outcome. The ultimate loss could rise due to the Fluor defendants seeking indemnification from DESC. 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. These cases are pending. FILOT Litigation and Related Matters In November 2017, Fairfield County filed a complaint and a motion for temporary injunction against DESC in the State Court of Common Pleas in Fairfield County, South Carolina, making allegations of breach of contract, fraud, negligent misrepresentation, breach of fiduciary duty, breach of implied duty of good faith and fair dealing and unfair trade practices related to DESC’s termination of the FILOT agreement between DESC and Fairfield County related to the NND Project. The plaintiff sought a temporary and permanent injunction to prevent DESC from terminating the FILOT agreement. The plaintiff withdrew the motion for temporary injunction in December 2017. Dominion Energy is currently unable to make an estimate of the potential impacts to its consolidated financial statements related to this matter. This case is pending. 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. DESC has protested the proposed assessment, which remains pending, and recorded a $20 million liability in its Consolidated Balance Sheet as of March 31, 2019. In September and October 2017, SCANA was served with subpoenas issued by the U.S. Attorney’s Office for the District of South Carolina and the Staff of the SEC’s Division of Enforcement seeking documents related to the NND Project. In addition, the South Carolina Law Enforcement Division is conducting a criminal investigation into the handling of the NND Project by SCANA and DESC. These matters are pending. SCANA and DESC are cooperating fully with the investigations, including responding to additional subpoenas and document requests; however, Dominion Energy cannot currently predict whether or to what extent SCANA or DESC may incur a material liability. Other Litigation In December 2018, arbitration proceedings commenced between DESC and Cameco Corporation related to a supply agreement signed in May 2008. This agreement provides the terms and conditions under which DESC agreed to purchase uranium hexafluoride from Cameco Corporation over a period from 2010 to 2020. Cameco Corporation alleges that DESC violated this agreement by failing to purchase the stated quantities of uranium hexafluoride for the 2017 and 2018 delivery years. DESC denies that it is in breach of the agreement and believes that it has reduced its purchase quantity within the terms of the agreement. Dominion Energy cannot determine the outcome or timing of this matter. Abandoned NND Project DESC, for itself and as agent for Santee Cooper, entered into an engineering, construction and procurement contract with Westinghouse and WECTEC in 2008 for the design and construction of the NND Project, of which DESC’s ownership share is 55%. Various difficulties were encountered in connection with the project. The ability of Westinghouse and WECTEC to adhere to established budgets and construction schedules was affected by many variables, including unanticipated difficulties encountered in connection with project engineering and the construction of project components, constrained financial resources of the contractors, regulatory, legal, training and construction processes associated with securing approvals, permits and licenses and necessary amendments to them within projected time frames, the availability of labor and materials at estimated costs and the efficiency of project labor. There were also contractor and supplier performance issues, difficulties in timely meeting critical regulatory requirements, contract disputes, and changes in key contractors or subcontractors. These matters preceded the filing for bankruptcy protection by Westinghouse and WECTEC in March 2017, and were the subject of comprehensive analyses performed by SCANA and Santee Cooper. Based on the results of SCANA’s analysis, and in light of Santee Cooper’s decision to suspend construction on the NND Project, in July 2017, SCANA determined to stop the construction of the units and to pursue recovery of costs incurred in connection with the construction under the abandonment provisions of the Base Load Review Act or through other means. This decision by SCANA became the focus of numerous legislative, regulatory and legal proceedings. Some of these proceedings remain unresolved and are described above. In September 2017, DESC, for itself and as agent for Santee Cooper, filed with the Bankruptcy Court Proofs of Claim for unliquidated damages against each of Westinghouse and WECTEC. These Proofs of Claim were based upon the anticipatory repudiation and material breach by Westinghouse and WECTEC of the contract, and assert against Westinghouse and WECTEC any and all claims that are based thereon or that may be related thereto. DESC and Santee Cooper remain responsible for any claims that may be made by Westinghouse and WECTEC against them relating to the contract. Westinghouse’s reorganization plan was confirmed by the Bankruptcy Court and became effective in August 2018. In connection with the effectiveness of the reorganization plan, the contract associated with the NND Project was deemed rejected. DESC is contesting approximately $285 million of filed liens in Fairfield County, South Carolina. Most of these asserted liens are claims that relate to work performed by Westinghouse subcontractors before the Westinghouse bankruptcy, although some of them are claims arising from work performed after the Westinghouse bankruptcy. Westinghouse has indicated that some unsecured creditors have sought or may seek amounts beyond what Westinghouse allocated when it submitted its reorganization plan to the Bankruptcy Court. If any unsecured creditor is successful in its attempt to include its claim as part of the class of general unsecured creditors beyond the amounts in the bankruptcy reorganization plan allocated by Westinghouse, it is possible that the reorganization plan will not provide for payment in full or nearly in full to its pre-petition DESC and Santee Cooper are responsible for amounts owed to Westinghouse for valid work performed by Westinghouse subcontractors on the NND Project after the Westinghouse bankruptcy filing until termination of the interim assessment agreement. DESC does not believe that the claims asserted related to the interim assessment agreement period will exceed the amounts previously funded, whether relating to claims already paid or those remaining to be paid. DESC intends to oppose any previously unasserted claim that is asserted against it, whether directly or indirectly by a claim through the interim assessment agreement. To the extent any such claim is determined to be valid, DESC may be responsible for paying its 55% share thereof. Further, some Westinghouse subcontractors who have made claims against Westinghouse in the bankruptcy proceeding also filed against DESC and Santee Cooper in South Carolina state court for damages. Many of these claimants have also asserted construction liens against the NND Project site. DESC also intends to oppose these claims and liens. With respect to claims of Westinghouse Subcontractors, DESC believes there were sufficient amounts previously funded during the interim assessment agreement period to pay such validly asserted claims. With respect to the Westinghouse subcontractor claims which relate to other periods, DESC understands that such claims will be paid pursuant to Westinghouse’s confirmed bankruptcy reorganization plan. DESC further understands that the amounts paid under the plan may satisfy such claims in full. Therefore, DESC believes that the Westinghouse subcontractors may be paid substantially (and potentially in full) by Westinghouse. While Dominion Energy cannot be assured that it will not have any exposure on account of unpaid Westinghouse subcontractor claims, which DESC is presently disputing, Dominion Energy believes it is unlikely that it will be required to make payments on account of such claims. To the extent any such claim is determined to be valid, DESC may be responsible for paying its 55% share thereof. Appalachian Gateway Gas Producers Litigation In connection with the Appalachian Gateway project, Dominion Energy Field Services, Inc. entered into contracts for firm purchase rights with a group of small gas producers. In June 2016, the gas producers filed a complaint in the Circuit Court of Marshall County, West Virginia against Dominion Energy, DETI and Dominion Energy Field Services, Inc., among other defendants, claiming that the contracts are unenforceable and seeking compensatory and punitive damages. During the third quarter of 2016, Dominion Energy, DETI and Dominion Energy Field Services, Inc. were served with the complaint. Also in the third quarter of 2016, Dominion Energy and DETI, with the consent of the other defendants, removed the case to the U.S. District Court for the Northern District of West Virginia. In October 2016, the defendants filed a motion to dismiss and the plaintiffs filed a motion to remand. In February 2017, the U.S. District Court entered an order remanding the matter to the Circuit Court of Marshall County, West Virginia. In March 2017, Dominion Energy was voluntarily dismissed from the case; however, DETI and Dominion Energy Field Services, Inc. remained parties to the matter. In April 2017, the case was transferred to the Business Court Division of West Virginia. In January 2018, the court granted the motion to dismiss filed by the defendants on two counts. In 2019, all claims were settled between Dominion Energy Field Services, Inc. and the gas producers, and all claims against DETI and Dominion Energy Field Services, Inc. were dismissed with no material impact to Dominion Energy or Dominion Energy Gas’ results of operati

Credit Risk

Credit Risk	Nov. 18, 2019
Risks and Uncertainties [Abstract]
Credit Risk	Note 18. Credit Risk The Companies’ accounting policies for credit risk are discussed in Note 23 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K , as updated in Current Report on Form 8-K, filed November 18, 2019. At March 31, 2019, Dominion Energy’s gross credit exposure related to energy marketing and price risk management activities totaled $184 million. Of this amount, investment grade counterparties, including those internally rated, represented 63%. No single counterparty, whether investment grade or non-investment non-investment For the three months ended March 31, 2019, the Export Customers comprised approximately 32% of Dominion Energy Gas’ total operating revenue, with Dominion Energy Gas’ largest customer representing approximately 17% of such amount during the period. For the three months ended March 31, 2018, Dominion Energy Gas’ two largest customers comprised approximately 6% of Dominion Energy Gas’ operating revenues, with the largest customer, an affiliate, representing approximately 4% of such amount during the period. Credit-Related Contingent Provisions The majority 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 March 31, 2019 and December 31, 2018, Dominion Energy would have been required to post less than $1 million and $1 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

Related-Party Transactions

Related-Party Transactions	Nov. 18, 2019
Related Party Transactions [Abstract]
Related-Party Transactions	Note 19. Related-Party Transactions Virginia Power and Dominion Energy Gas engage in related-party transactions primarily with other Dominion Energy subsidiaries (affiliates). Virginia Power’s and Dominion Energy Gas’ 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 and Dominion Energy Gas are 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 March 31, 2019, Virginia Power’s derivative assets and liabilities with affiliates were both $6 million. At December 31, 2018, Virginia Power’s derivative assets and liabilities with affiliates were $26 million and $10 million, respectively. See Note 9 for more information. Virginia Power participates in certain Dominion Energy benefit plans described in Note 21 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K , as updated in Current Report on Form 8-K, filed November 18, 2019. 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 March 31, 2019 2018 (millions) Commodity purchases from affiliates $ 272 $ 398 Services provided by affiliates (1) 119 120 Services provided to affiliates 6 6 (1) Includes capitalized expenditures of $33 million and $37 million for the three months ended March 31, 2019 and 2018, respectively. Virginia Power has borrowed funds from Dominion Energy under short-term borrowing arrangements. There were $24 million and $224 million in short-term demand note borrowings from Dominion Energy as of March 31, 2019 and December 31, 2018, respectively. Virginia Power had no outstanding borrowings, net of repayments, under the Dominion Energy money pool for its nonregulated subsidiaries as of March 31, 2019 and December 31, 2018. Interest charges related to Virginia Power’s borrowings from Dominion Energy were immaterial for the three months ended March 31, 2019 and 2018. There were no issuances of Virginia Power’s common stock to Dominion Energy for the three months ended March 31, 2019 and 2018. Dominion Energy Gas Transactions with Related Parties Dominion Energy Gas transacts with affiliates for certain quantities of natural gas and other commodities at market prices in the ordinary course of business. Additionally, Dominion Energy Gas provides transportation and storage services to affiliates. Dominion Energy Gas also enters into certain other contracts with affiliates and related parties, including construction services, which are presented separately from contracts involving commodities or services. As of March 31, 2019 and December 31, 2018, all of Dominion Energy Gas’ commodity derivatives were with affiliates. See Notes 7 and 9 for more information. See Note 10 for information regarding transactions with Atlantic Coast Pipeline. Dominion Energy Gas participates in certain Dominion Energy benefit plans as described in Note 21 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K , as updated in Current Report on Form 8-K, filed November 18, 2019. DES, DECGS, DEQPS and other affiliates provide accounting, legal, finance, marketing and certain operational, administrative and technical services to Dominion Energy Gas. Dominion Energy Gas provides certain services to related parties, including technical services. The financial statements for all years presented include costs for certain general, administrative and corporate expenses assigned by DES, DECGS and DEQPS to Dominion Energy Gas on the basis of direct and allocated methods in accordance with Dominion Energy Gas’ services agreements with DES, DECGS and DEQPS. Where costs incurred cannot be determined by specific identification, the costs are allocated based on the proportional level of effort devoted by DES, DECGS and DEQPS 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, DECGS and DEQPS service. Management believes the assumptions and methodologies underlying the allocation of general corporate overhead expenses are reasonable. Presented below are Dominion Energy Gas’ significant transactions with DES, DECGS DEQPS and other affiliates and related parties: Three Months Ended March 31, 2019 2018 (millions) Sales of natural gas and transportation and storage services to affiliates $ 67 $ 46 Services provided by related parties (1) 45 44 Services provided to related parties (2) 45 59 (1) Includes capitalized expenditures of $6 million and $12 million for the three months ended March 31, 2019 and 2018, respectively. (2) Amounts primarily attributable to Atlantic Coast Pipeline, a related-party VIE. The following table presents affiliated and related party balances reflected in Dominion Energy Gas’ Consolidated Balance Sheets: March 31, 2019 December 31, 2018 (millions) Other receivables (1) $ 12 $ 13 Imbalances receivable from affiliates 1 16 Imbalances payable to affiliates (2) 1 4 (1) Represents amounts due from Atlantic Coast Pipeline, a related-party VIE. (2) Amounts are presented in other current liabilities in Dominion Energy Gas’ Consolidated Balance Sheets. Affiliated receivables at March 31, 2019 and December 31, 2018 included $13 million and $7 million, respectively, of accrued unbilled revenue. This revenue is based on estimated amounts of services provided but not yet billed to various affiliates. Dominion Energy Gas’ borrowings under the intercompany revolving credit agreement with Dominion Energy were $47 million million less than $1 million for both DCPI’s borrowings under intercompany revolving credit agreements with Dominion Energy totaled $2.9 billion at both March 31, 2019 and December 31, 2018. Interest charges related to DCPI’s total borrowings from Dominion Energy and subsidiaries totaled $29 million and $22 million for the three months ended March 31, 2019 and 2018, respectively. DMLPHCII’s total borrowings under an intercompany revolving credit agreement with Dominion Energy totaled $22 million at both March 31, 2019 and December 31, 2018. Interest charges related to DMLPHCII’s total borrowings from Dominion Energy were less than $1 million for both the three months ended March 31, 2019 and 2018. Affiliated notes receivable from East Ohio and DGP for borrowings under intercompany revolving credit agreements with Dominion Energy Gas were $601 million and $704 million as of March 31, 2019 and December 31, 2018, respectively. Interest income on the promissory notes receivable was $49 million and $19 million for the three months ended March 31, 2019 and 2018, respectively. In 2019, Dominion Energy Midstream entered into a $400 million promissory note with Dominion Energy that matures on January 31, 2022. The interest rate is a fixed 3.5% per annum. As of March 31, 2019, $395 million of the promissory note remained outstanding. Interest charges For the three months ended March 31, 2019 and 2018, Dominion Energy Gas, including entities acquired in the Dominion Energy Gas Restructuring, distributed $134 million and $46 million to Dominion Energy, respectively.

Employee Benefit Plans

Employee Benefit Plans	Nov. 18, 2019
Retirement Benefits [Abstract]
Employee Benefit Plans	Note 20. Employee Benefit Plans Dominion Energy The components of Dominion Energy’s provision for net periodic benefit cost (credit) were as follows: Pension Benefits Other Postretirement Benefits 2019 2018 2019 2018 (millions) Three Months Ended March 31, Service cost $ 40 $ 39 $ 7 $ 7 Interest cost 101 84 17 14 Expected return on plan assets (177 ) (165 ) (33 ) (36 ) Amortization of prior service credit — — (13 ) (13 ) Amortization of net actuarial loss 39 48 4 3 Settlements 2 — — — Net periodic benefit cost (credit) $ 5 $ 6 $ (18 ) $ (25 ) Voluntary Retirement Program In March 2019, the Companies announced a voluntary retirement program to employees that meet certain age and service requirements. The Companies expect to incur a charge in the second quarter of 2019 as determinations are made concerning the number of employees that elect to participate in the program. The voluntary retirement program will not compromise safety or the Companies’ ability to comply with applicable laws and regulations. While the Companies are unable to estimate the amount, it could be material to the Companies’ results of operations and financial condition. Employer Contributions During the three months ended March 31, 2019, Dominion Energy made no contributions to its defined benefit pension plans or other postretirement benefit plans. Dominion Energy expects to contribute approximately $21 million and $12 million to its defined benefit pension plans and other postretirement benefit plans through VEBAs, respectively, during the remainder of 2019. Dominion Energy Gas Dominion Energy Gas participates in certain Dominion Energy benefit plans as described in Note 21 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K , as updated in Current Report on Form 8-K, filed November 18, 2019. The components of Dominion Energy Gas’ provision for net periodic benefit cost (credit) for employees represented by collective bargaining units were as follows: Pension Benefits Other Postretirement Benefits 2019 2018 2019 2018 (millions) Three Months Ended March 31, Service cost $ 4 $ 4 $ 1 $ 1 Interest cost 8 7 3 3 Expected return on plan assets (39 ) (37 ) (7 ) (8 ) Amortization of prior service credit — — (1 ) (1 ) Amortization of net actuarial loss 5 5 1 1 Net periodic benefit credit $ (22 ) $ (21 ) $ (3 ) $ (4 ) Employer Contributions During the three months ended March 31, 2019, Dominion Energy Gas made no contributions to its defined benefit pension plans or other postretirement benefit plans. Dominion Energy Gas expects to contribute approximately $12 million to its other postretirement benefit plans through VEBAs during the remainder of 2019.

Operating Segments

Operating Segments	Nov. 18, 2019
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 Virginia Power Dominion Power Delivery Regulated electric distribution X X Regulated electric transmission X X Power Generation Regulated electric generation fleet X X Merchant electric generation fleet X Gas Infrastructure Gas transmission and storage X X Gas distribution and storage X Gas gathering and processing X LNG terminalling and storage X X Nonregulated retail energy marketing X Southeast Energy Regulated electric distribution X Regulated electric transmission X Regulated electric generation fleet X Gas distribution and storage X Nonregulated retail energy marketing X 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 In the three months ended March 31, 2019, Dominion Energy reported after-tax after-tax The net expense for specific items attributable to Dominion Energy’s operating segments in 2019 primarily related to the impact of the following items: • A $1.0 billion ($756 million after-tax) • A $369 million ($275 million after-tax) • A $198 million tax charge for $264 million of income tax-related • A $169 million ($127 million after-tax) • A $160 million ($119 million after-tax) • $106 million ($81 million after-tax) • A $105 million ($79 million after-tax) • A $253 million ($189 million after-tax) • A $113 million ($84 million after-tax) The net expense for specific items attributable to Dominion Energy’s operating segments in 2018 primarily related to the impact of the following items: • A $215 million ($160 million after-tax) one-time • Power Generation ($109 million after-tax); • Power Delivery ($51 million after-tax). • A $43 million ($32 million after-tax) The following table presents segment information pertaining to Dominion Energy’s operations: Power Delivery Power Generation Gas Infrastructure Southeast Energy Corporate and Other Adjustments/ Eliminations Consolidated Total (millions) Three Months Ended March 31, 2019 Total revenue from external customers $ 598 $ 1,745 $ 1,373 $ 1,182 $ (1,040 ) $ — $ 3,858 Intersegment revenue 6 4 26 — 184 (220 ) — Total operating revenue 604 1,749 1,399 1,182 (856 ) (220 ) 3,858 Net income (loss) attributable to Dominion Energy 155 308 359 132 (1,634 ) — (680 ) Three Months Ended March 31, 2018 Total revenue from external customers $ 563 $ 1,860 $ 1,222 $ (207 ) $ 28 $ 3,466 Intersegment revenue 6 2 6 175 (189 ) — Total operating revenue 569 1,862 1,228 (32 ) (161 ) 3,466 Net income (loss) attributable to Dominion Energy 156 348 327 (328 ) — 503 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. Virginia Power The Corporate and Other Segment of Virginia Power In the three months ended March 31, 2019, Virginia Power reported after-tax after-tax The net expense for specific items attributable to Virginia Power’s operating segments in 2019 primarily related to the impact of the following items: • A $369 million ($275 million after-tax) • A $160 million ($119 million after-tax) • A $29 million ($22 million after-tax) • Power Generation ($19 million after-tax); • Power Delivery ($3​​​​​​​ million after-tax), • A $113 million ($84 million after-tax) The net expense for specific items attributable to Virginia Power’s operating segments in 2018 primarily related to the impact of the following items: • A $215 million ($160 million after-tax) one-time • Power Generation ($109 million after-tax); • Power Delivery ($51 million after-tax). • A $31 million ($23 million after-tax) The following table presents segment information pertaining to Virginia Power’s operations: Power Delivery Power Generation Corporate and Other Consolidated Total (millions) Three Months Ended March 31, 2019 Operating revenue $ 598 $ 1,396 $ (29 ) $ 1,965 Net income (loss) 154 204 (338 ) 20 Three Months Ended March 31, 2018 Operating revenue $ 563 $ 1,400 $ (215 ) $ 1,748 Net income (loss) 154 222 (192 ) 184 Dominion Energy Gas The Corporate and Other Segment of Dominion Energy Gas In addition, Corporate and Other includes the net impact of discontinued operations, which are discussed in Note 3. In both the three months ended March 31, 2019 and 2018, Dominion Energy Gas reported an immaterial amount of specific items in the Corporate and Other segment. The following table presents segment ​​​​​​​information pertaining to Dominion Energy Gas’ operations: Gas Infrastructure Corporate and Other Consolidated Total (millions) Three Months Ended March 31, 2019 Operating revenue $ 566 $ — $ 566 Net income from discontinued operations — 54 54 Net income attributable to Dominion Energy Gas 138 52 190 Three Months Ended March 31, 2018 Operating revenue $ 389 $ — $ 389 Net income from discontinued operations — 56 56 Net income attributable to Dominion Energy Gas 123 57 180

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	Nov. 18, 2019
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 , as updated in Current Report on Form 8-K, filed November 18, 2019.
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 60.9 37.5 In January 2019, Dominion Energy acquired all outstanding partnership interests not owned by Dominion Energy and Dominion Energy Midstream became a wholly-owned subsidiary of Dominion Energy. Subsequent to this activity, as a result of the Dominion Energy Gas Restructuring, Dominion Energy Gas is considered to have acquired all of the outstanding partnership interests of Dominion Energy Midstream and Dominion Energy Midstream became a wholly-owned subsidiary of Dominion Energy Gas
Reclassifications	Certain amounts in the Companies’ 2018 Consolidated Financial Statements and Notes have been reclassified to conform to the 2019 presentation for comparative purposes; however, such reclassifications did not affect the Companies’ net income, total assets, liabilities, equity or cash flows
Cash, Restricted Cash and Equivalents	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 three months ended March 31, 2019 and 2018: Cash, Restricted Cash and Equivalents Cash, Restricted Cash and Equivalents at March 31, 2019 March 31, 2018 December 31, December 31, (millions) Dominion Energy Cash and cash equivalents $ 422 $ 189 $ 268 $ 120 Restricted cash and equivalents (1) 205 145 123 65 Cash, restricted cash and equivalents shown in the Consolidated Statements of Cash Flows $ 627 $ 334 $ 391 $ 185 Virginia Power Cash and cash equivalents $ 14 $ 6 $ 29 $ 14 Restricted cash and equivalents (1) 9 10 9 10 Cash, restricted cash and equivalents shown in the Consolidated Statements of Cash Flows $ 23 $ 16 $ 38 $ 24 Dominion Energy Gas Cash and cash equivalents (2) $ 147 $ 38 $ 108 $ 18 Restricted cash and equivalents (1) 62 127 90 39 Cash, restricted cash and equivalents shown in the Consolidated Statements of Cash Flows $ 209 $ 165 $ 198 $ 57 (1) Restricted cash and equivalent balances are presented within other current assets in the Companies’ Consolidated Balance Sheets. (2) At March 31, 2019, March 31, 2018, December 31, 2018 and December 31, 2017, Dominion Energy Gas had $4 million, $4 million, $9 million and $3 million of cash and cash equivalents included in current assets of discontinued operations, respectively.
Property, Plant and Equipment	Property, Plant and Equipment In January 2019, Virginia Power committed to a plan to retire certain automated meter reading infrastructure associated with its electric operations before the end of its useful life and replace such equipment with more current AMI technology. As a result, Virginia Power recorded a charge of $160 million ($119 million after-tax), 10-K , as updated in Current Report on Form 8-K, filed November 18, 2019 . In March 2019, Virginia Power committed to retire certain electric generating units before the end of their useful lives and completed the retirement of certain units at six after-tax), 10- K, as updated in Current Report on Form 8-K, filed November 18, 2019.
Leases	Leases The Companies lease certain assets including vehicles, real estate, office equipment and other operational assets under both operating and finance leases. For the Companies’ operating leases, rent expense is recognized on a straight-line basis over the term of the lease agreement. Rent expense associated with operating leases, short-term leases and variable leases is primarily recorded in other operations and maintenance expense in the Companies’ Consolidated Statements of Income. Rent expense associated with finance leases results in the separate presentation of interest expense on the lease liability and amortization expense of the related right-of-use Certain of the Companies’ leases include one or more options to renew, with renewal terms that can extend the lease from one to 70 right-of-use one year renewal options that the Companies are reasonably certain will be exercised. Additionally, certain of the Companies’ leases contain escalation clauses whereby payments are adjusted for consumer price or other indices or contain fixed dollar or percentage increases. The Companies also have leases with variable payments based upon usage of, or revenues associated with, the leased assets. The determination of the discount rate utilized has a significant impact on the calculation of the present value of the lease liability included in the Companies’ Consolidated Balance Sheets. For the Companies’ fleet of leased vehicles, the discount rate is equal to the prevailing borrowing rate earned by the lessor. For the Companies’ remaining leased assets, the discount rate implicit in the lease is generally unable to be determined from a lessee perspective. As such, the Companies use internally-developed incremental borrowing rates as a discount rate in the calculation of the present value of the lease liability. The incremental borrowing rates are determined based on an analysis of the Companies’ publicly available unsecured borrowing rates, adjusted for a collateral discount, over various lengths of time that most closely correspond to the Companies’ lease maturities. In addition, Dominion Energy acts as lessor under certain power purchase agreements in which the counterparty or counterparties purchase substantially all of the output of certain solar facilities. These leases are considered operating in nature. For such leasing arrangements, rental revenue and an associated accounts receivable are recorded when the monthly output of the solar facility is determined. Depreciation on these solar facilities is computed on a straight-line basis over an estimated useful life of 30 years.
New Accounting Standards	New Accounting Standards Leases In February 2016, the FASB issued revised accounting guidance for the recognition, measurement, presentation and disclosure of leasing arrangements. The update requires that a liability and corresponding right-of-use The guidance became effective for the Companies’ interim and annual reporting periods beginning January 1, 2019. The Companies adopted this revised accounting guidance using a modified retrospective approach, which requires lessees and lessors to recognize and measure leases at the date of adoption. Under this approach, the Companies utilized the transition practical expedient to maintain historical presentation for periods before January 1, 2019. The Companies also applied the other practical expedients, which required no reassessment of whether existing contracts are or contain leases, no reassessment of lease classification for existing leases and no reassessment of existing or expired land easements that were not previously accounted for as leases. In connection with the adoption of this revised accounting guidance, Dominion Energy, Virginia Power and Dominion Energy Gas recorded $504 million, $209 million and $64 million, respectively, of offsetting right-of-use right-or-use
Fair Value Measurements	The Companies enter into certain physical and financial forwards, futures, options and swaps, 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, futures, and swaps contracts. An option model is used to value Level 3 physical options. The discounted cash flow model for forwards, futures, and swaps calculates mark-to-market mark-to-market
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. 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

Significant Accounting Polici_3

Significant Accounting Policies (Tables)	Nov. 18, 2019
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 three months ended March 31, 2019 and 2018: Cash, Restricted Cash and Equivalents Cash, Restricted Cash and Equivalents at March 31, 2019 March 31, 2018 December 31, December 31, (millions) Dominion Energy Cash and cash equivalents $ 422 $ 189 $ 268 $ 120 Restricted cash and equivalents (1) 205 145 123 65 Cash, restricted cash and equivalents shown in the Consolidated Statements of Cash Flows $ 627 $ 334 $ 391 $ 185 Virginia Power Cash and cash equivalents $ 14 $ 6 $ 29 $ 14 Restricted cash and equivalents (1) 9 10 9 10 Cash, restricted cash and equivalents shown in the Consolidated Statements of Cash Flows $ 23 $ 16 $ 38 $ 24 Dominion Energy Gas Cash and cash equivalents (2) $ 147 $ 38 $ 108 $ 18 Restricted cash and equivalents (1) 62 127 90 39 Cash, restricted cash and equivalents shown in the Consolidated Statements of Cash Flows $ 209 $ 165 $ 198 $ 57 (1) Restricted cash and equivalent balances are presented within other current assets in the Companies’ Consolidated Balance Sheets. (2) At March 31, 2019, March 31, 2018, December 31, 2018 and December 31, 2017, Dominion Energy Gas had $4 million, $4 million, $9 million and $3 million of cash and cash equivalents included in current assets of discontinued operations, respectively.

Acquisitions and Dispositions (

Acquisitions and Dispositions (Tables)	Nov. 18, 2019
Business Acquisition, Pro Forma Information	The following unaudited pro forma financial information reflects the consolidated results of operations of Dominion Energy assuming the SCANA Combination had taken place on January 1, 2018. The unaudited pro forma financial information has been presented for illustrative purposes only and may change as Dominion Energy finalizes its valuation of certain assets acquired and liabilities assumed at the acquisition date. The unaudited pro forma financial information is not necessarily indicative of the consolidated results of operations that would have been achieved or the future consolidated results of operations of the combined company. Three Months Ended March 31, 2019 (1) 2018 (1) (millions, except EPS) Operating Revenue $ 4,887 $ 4,636 Net income attributable to Dominion Energy 605 675 Earnings Per Common Share – Basic $ 0.76 $ 0.90 Earnings Per Common Share – Diluted $ 0.76 $ 0.90 (1) Amounts include adjustments for non-recurring
Schedule Of Discontinued Operations Income Statement	The following table represents selected information regarding the results of operations of East Ohio, which are reported as discontinued operations in Dominion Energy Gas’ Consolidated Statements of Income: Three Months Ended March 31, 2019 2018 (millions) Operating revenue $ 229 $ 215 Depreciation and amortization 21 17 Other operating expenses 148 137 Other income 18 17 Interest and related charges 10 8 Income tax expense 14 14 Net income from discontinued operations $ 54 $ 56 The carrying amounts of major classes of assets and liabilities relating to East Ohio, which are reported as discontinued operations in Dominion Energy Gas’ Consolidated Balance Sheets were as follows: March 31, At December 31, (millions) Current assets of discontinued operations (1) $ 440 $ 423 Investments 2 2 Property, plant and equipment, net 3,710 3,669 Regulatory assets 740 711 Other deferred charges and other assets, including goodwill and intangible assets 1,321 1,275 Noncurrent assets of discontinued operations 5,773 5,657 Current liabilities of discontinued operations 1,086 1,262 Long-term debt 1,551 1,300 Deferred income taxes and investment tax credits 728 716 Regulatory liabilities 755 747 Other deferred credits and liabilities 117 108 Noncurrent liabilities of discontinued operations 3,151 2,871 (1) Includes cash and cash equivalents of $4 million and $9 million as of March 31, 2019 and December 31, 2018, respectively. The following table represents selected information regarding the results of operations of DGP, which are reported as discontinued operations in Dominion Energy Gas’ Consolidated Statements of Income: Three Months Ended March 31, 2019 2018 (millions) Operating revenue $ 45 $ 51 Depreciation and amortization 1 4 Other operating expenses 44 47 Net income from discontinued operations $ — $ — The carrying amounts of major classes of assets and liabilities relating to DGP, which are reported as discontinued operations in Dominion Energy Gas’ Consolidated Balance Sheets were as follows: March 31, At December 31, (millions) Current assets of discontinued operations (1) $ 19 $ 21 Noncurrent assets of discontinued operations (2) 196 192 Current liabilities of discontinued operations 11 11 Noncurrent liabilities of discontinued operations 30 25 (1) Includes cash and cash equivalents of less than a million dollars as of March 31, 2019 and December 31, 2018. (2) Primarily property, plant and equipment, net.
East Ohio
Schedule Of Significant Non Cash Items And Capital Expenditure	Capital expenditures and significant noncash items relating to East Ohio included the following: Three Months Ended March 31, 2019 2018 (millions) Capital expenditures $ 65 $ 58 Significant noncash items Accrued capital expenditures 6 6
DGP
Schedule Of Significant Non Cash Items And Capital Expenditure	Capital expenditures and significant noncash items of DGP included the following: Three Months Ended March 31, 2019 2018 (millions) Capital expenditures $ 3 $ 1
SCANA
Schedule of Preliminary Allocation of Purchase Price to Assets Acquired and Liabilities Assumed	The table below shows the preliminary allocation of the purchase price to the assets acquired and liabilities assumed at closing, including an adjustment related to income taxes identified during the first quarter as discussed in Note 5. The allocation is subject to change during the measurement period as additional information is obtained about the facts and circumstances that existed at closing. Any material adjustments to provisional amounts identified during the measurement period will be recognized and disclosed in the reporting period in which the adjustment amounts are determined. Certain tax-related Amount (millions) Total current assets (1) $ 1,772 Investments 224 Property, plant and equipment (2) 11,006 Goodwill 2,550 Regulatory assets (3) 3,940 Other deferred charges and other assets, including intangible assets 430 Total Assets 19,922 Total current liabilities 1,515 Long-term debt 6,707 Deferred income taxes 1,100 Regulatory liabilities 2,662 Other deferred credits and other liabilities 1,099 Total Liabilities 13,083 Total purchase price (4) $ 6,839 (1) Includes $389 million of cash, restricted cash and equivalents, of which $115 million is considered restricted. (2) Includes $105 million of certain property, plant and equipment associated with the NND Project for which Dominion Energy committed to forgo recovery in accordance with the SCANA Merger Approval Order. As a result, Dominion Energy’s Consolidated Statement of Income for the three months ended March 31, 2019 includes a charge of $105 million ($79 million after-tax), (3) Includes $264 million of certain income tax-related (4) Includes stock-based compensation awards with an estimated fair value of $21 million.

Operating Revenue (Tables)

Operating Revenue (Tables)	Nov. 18, 2019
Regulated and Unregulated Operating Revenue [Abstract]
Schedule of Operating Revenue	The Companies’ operating revenue consists of the following: Three Months Ended March 31, 2019 2018 (millions) Dominion Energy Regulated electric sales: Residential $ 646 $ 817 Commercial 496 524 Industrial 30 107 Government and other retail 200 213 Wholesale 48 42 Nonregulated electric sales 316 418 Regulated gas sales: Residential 602 364 Commercial 191 103 Other 38 10 Nonregulated gas sales 247 88 Regulated gas transportation and storage: FERC-regulated 277 262 State-regulated 213 190 Nonregulated gas transportation and storage 174 — Other regulated revenues (1) 58 50 Other nonregulated revenues (1)(2) 95 136 Total operating revenue from contracts with customers 3,631 3,324 Other revenues (3) 227 142 Total operating revenue $ 3,858 $ 3,466 Virginia Power Regulated electric sales: Residential $ 923 $ 817 Commercial 636 524 Industrial 112 107 Government and other retail 204 213 Wholesale 37 42 Other regulated revenues 33 32 Other nonregulated revenues (2) 6 13 Total operating revenue from contracts with customers 1,951 1,748 Other revenues (2)(3) 14 — Total operating revenue $ 1,965 $ 1,748 Dominion Energy Gas Regulated gas sales - wholesale $ 2 5 Nonregulated gas sales (2) 2 2 Regulated gas transportation and storage 340 314 Nonregulated gas transportation and storage 174 $ — Management service revenue (2) 44 59 Other regulated revenues 3 8 Total operating revenue from contracts with customers 565 388 Other revenues 1 1 Total operating revenue $ 566 $ 389 (1) Amounts above include $51 million for the three months ended March 31, 2019, and $30 million for the three months ended March 31, 2018 primarily consisting of NGL sales at Dominion Energy which are considered to be goods transferred at a point in time. (2) See Notes 10 and 19 for amounts attributable to related parties and affiliates. (3) Amounts above include $14 million and $8 million of alternative revenue at Dominion Energy and Virginia Power for the three months ended March 31, 2019, respectively.
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 the Companies expect to recognize this revenue. These revenues relate to contracts containing fixed prices where the Companies will earn the associated revenue over time as they stand 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 the Companies elect to recognize revenue in the amount they have a right to invoice. Revenue expected to be recognized on multi-year 20 1 9 20 2 0 20 2 1 20 2 2 20 2 3 Thereafter Total (millions) Dominion Energy $ 1,197 $ 1,547 $ 1,448 $ 1,334 $ 1,166 $ 13,562 $ 20,254 Virginia Power 16 3 1 — — — 20 Dominion Energy Gas 1,266 1,657 1,557 1,422 1,231 13,865 20,998

Income Taxes (Tables)

Income Taxes (Tables)	Nov. 18, 2019
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 Dominion Energy Gas Three Months Ended March 31, 2019 2018 2019 2018 2019 2018 U.S. statutory rate 21.0 % 21.0 % 21.0 % 21.0 % 21.0 % 21.0 % Increases (reductions) resulting from: State taxes, net of federal benefit 2.2 4.1 4.6 4.5 3.4 5.5 Investment tax credits (1.5 ) (0.5 ) (3.2 ) (0.9 ) — — Production tax credits (0.8 ) (0.6 ) (1.0 ) (0.7 ) — — Reversal of excess deferred income taxes (5.1 ) (1.4 ) (5.0 ) (2.0 ) (0.7 ) (0.8 ) Write-off (34.1 ) — — — — — Other, net (2.0 ) (2.1 ) 0.1 (0.3 ) (3.8 ) (1) (4.0 ) (1) Effective tax rate (20.3 )% 20.5 % 16.5 % 21.6 % 19.9 % 21.7 % (1) Includes

Earnings Per Share (Tables)

Earnings Per Share (Tables)	Nov. 18, 2019
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 March 31, 2019 2018 (millions, except EPS) Net income (loss) attributable to Dominion Energy $ (680 ) $ 503 Average shares of common stock outstanding – Basic 793.1 650.5 Net effect of dilutive securities — — Average shares of common stock outstanding – Diluted 793.1 650.5 Earnings Per Common Share – Basic $ (0.86 ) $ 0.77 Earnings Per Common Share – Diluted $ (0.86 ) $ 0.77

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Tables)	Nov. 18, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Schedule of Accumulated Other Comprehensive Income (Loss)	The following table presents Dominion Energy’s changes in AOCI by component, net of tax: Deferred gains and losses on derivatives- hedging activities Unrealized gains and losses on investment securities Unrecognized pension and other postretirement benefit costs Other comprehensive loss from equity method investees Total (millions) Three Months Ended March 31, 2019 Beginning balance $ (235 ) $ 2 $ (1,465 ) $ (2 ) $ (1,700 ) Other comprehensive income before reclassifications: (24 ) 16 — — (8 ) Amounts reclassified from AOCI: (gains) losses (1) (31 ) — 8 — (23 ) Net current period other comprehensive income (loss) (55 ) 16 8 — (31 ) Ending balance $ (290 ) $ 18 $ (1,457 ) $ (2 ) $ (1,731 ) Three Months Ended March 31, 2018 Beginning balance $ (302 ) $ 747 $ (1,101 ) $ (3 ) $ (659 ) Other comprehensive income before reclassifications: 111 (13 ) — — 98 Amounts reclassified from AOCI: (gains) losses (1) 8 1 25 — 34 Net current period other comprehensive income (loss) 119 (12 ) 25 — 132 Cumulative-effect of changes in accounting principle (64 ) (732 ) (227 ) — (1,023 ) Less other comprehensive income attributable to noncontrolling interest 1 — — — 1 Ending balance $ (248 ) $ 3 $ (1,303 ) $ (3 ) $ (1,551 ) (1) See table below for details about these reclassifications.
Reclassification out of Accumulated Other Comprehensive Income	The following table presents Dominion Energy’s reclassifications out of AOCI by component: Details about AOCI components Amounts reclassified from AOCI Affected line item in the Consolidated Statements of Income (millions) Three Months Ended March 31, 2019 Deferred (gains) and losses on derivatives-hedging activities: Commodity contracts $ (54 ) Operating revenue (3 ) Purchased gas Interest rate contracts 10 Interest and related charges Foreign currency contracts 6 Other income Total (41 ) Tax 10 Income tax expense Total, net of tax $ (31 ) Unrecognized pension and other postretirement benefit costs: Amortization of prior-service costs (credits) $ (5 ) Other income Amortization of actuarial losses 27 Other income Total 22 Tax (14 ) Income tax expense Total, net of tax $ 8 Three Months Ended March 31, 2018 Deferred (gains) and losses on derivatives-hedging activities: Commodity contracts $ 12 Operating revenue 2 Purchased gas (7 ) Electric fuel and other energy-related purchases Interest rate contracts 12 Interest and related charges Foreign currency contracts (8 ) Other income Total 11 Tax (3 ) Income tax expense Total, net of tax $ 8 Unrealized (gains) and losses on investment securities: Realized (gain) loss on sale of securities $ 1 Other income Total 1 Tax — Income tax expense Total, net of tax $ 1 Unrecognized pension and other postretirement benefit costs: Amortization of prior-service costs (credits) $ (5 ) Other income Amortization of actuarial losses 31 Other income Total 26 Tax (1 ) Income tax expense Total, net of tax $ 25
Virginia Electric and Power Company
Accumulated Other Comprehensive Income (Loss) [Line Items]
Schedule of Accumulated Other Comprehensive Income (Loss)	The following table presents Virginia Power’s changes in AOCI by component, net of tax: Deferred gains and losses on derivatives- hedging activities Unrealized gains and losses on investment securities Total (millions) Three Months Ended March 31, 2019 Beginning balance $ (13 ) $ 1 $ (12 ) Other comprehensive income before reclassifications: (7 ) 2 (5 ) Amounts reclassified from AOCI: (gains) losses — — — Net current period other comprehensive income (loss) (7 ) 2 (5 ) Ending balance $ (20 ) $ 3 $ (17 ) Three Months Ended March 31, 2018 Beginning balance $ (12 ) $ 74 $ 62 Other comprehensive income before reclassifications: 5 — 5 Amounts reclassified from AOCI: (gains) losses — — — Net current period other comprehensive income (loss) 5 — 5 Cumulative-effect of changes in accounting principle (3 ) (73 ) (76 ) Ending balance $ (10 ) $ 1 $ (9 )
Dominion Energy Gas Holdings, LLC
Accumulated Other Comprehensive Income (Loss) [Line Items]
Schedule of Accumulated Other Comprehensive Income (Loss)	The following table presents Dominion Energy Gas’ changes in AOCI by component, net of tax: Deferred gains and losses on derivatives- hedging activities Unrecognized pension costs Total (millions) Three Months Ended March 31, 2019 Beginning balance $ (25 ) $ (144 ) $ (169 ) Other comprehensive income before reclassifications: gains (losses) (27 ) — (27 ) Amounts reclassified from AOCI: (gains) losses (1) 3 1 4 Net current period other comprehensive income (loss) (24 ) 1 (23 ) Less other comprehensive income attributable to noncontrolling interest (1 ) — (1 ) Ending balance $ (48 ) $ (143 ) $ (191 ) Three Months Ended March 31, 2018 Beginning balance $ (23 ) $ (75 ) $ (98 ) Other comprehensive income before reclassifications: gains (losses) 13 — 13 Amounts reclassified from AOCI: (gains) losses (1) (2 ) 1 (1 ) Net current period other comprehensive income 11 1 12 Cumulative-effect of changes in accounting principle (5 ) (21 ) (26 ) Less other comprehensive income attributable to noncontrolling interest 1 — 1 Ending balance $ (16 ) $ (95 ) $ (113 ) (1) See table below for details about these reclassifications.
Reclassification out of Accumulated Other Comprehensive Income	The following table presents Dominion Energy Gas’ reclassifications out of AOCI by component: Details about AOCI components Amounts reclassified from AOCI Affected line item in the Consolidated Statements of Income (millions) Three Months Ended March 31, 2019 Deferred (gains) and losses on derivatives-hedging activities: Commodity contracts $ (2 ) Net income from discontinued operations Interest rate contracts (1 ) Interest and related charges Foreign currency contracts 6 Other income Total 3 Tax — Income tax expense Total, net of tax $ 3 Unrecognized pension costs: Actuarial losses $ 2 Other income Total 2 Tax (1 ) Income tax expense Total, net of tax $ 1 Three Months Ended March 31, 2018 Deferred (gains) and losses on derivatives-hedging activities: Commodity contracts $ 3 Net income from discontinued operations Interest rate contracts 2 Interest and related charges Foreign currency contracts (8 ) Other income Total (3 ) Tax 1 Income tax expense Total, net of tax $ (2 ) Unrecognized pension costs: Actuarial losses $ 2 Other income Total 2 Tax (1 ) Income tax expense Total, net of tax $ 1

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	Nov. 18, 2019
Fair Value Inputs, Assets, Quantitative Information	The following table presents Dominion Energy’s quantitative information about Level 3 fair value measurements at March 31, 2019. 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 and futures: Natural gas (2) $ 60 Discounted cash flow Market price (per Dth) (3) (2) - 7 (1 ) FTRs 2 Discounted cash flow Market price (per MWh) (3) (1) - 2 — Physical options: Natural gas 1 Option model Market price (per Dth) (3) 2 - 7 3 Price volatility (4) 10% - 66 % Total assets $ 63 Liabilities Financial forwards: FTRs $ 3 Discounted cash flow Market price (per MWh) (3) (1) - 2 1 Physical options: Natural gas 7 Option model Market price (per Dth) (3) 2 - 16 5 Price volatility (4) 23% - 492% 82​​​​​​​% Total liabilities $ 10 (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, Options, 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 March 31, 2019 Assets Derivatives: Commodity $ 2 $ 92 $ 63 $ 157 Interest rate — 3 — 3 Foreign currency — 13 — 13 Investments (1) Equity securities: U.S. 3,688 — — 3,688 Fixed income securities: Corporate debt instruments — 470 — 470 Government securities 468 678 — 1,146 Cash equivalents and other 11 — — 11 Total assets $ 4,169 $ 1,256 $ 63 $ 5,488 Liabilities Derivatives: Commodity $ — $ 35 $ 10 $ 45 Interest rate — 323 — 323 Foreign currency — 1 — 1 Total liabilities $ — $ 359 $ 10 $ 369 At December 31, 2018 Assets Derivatives: Commodity $ — $ 180 $ 70 $ 250 Interest rate — 18 — 18 Foreign currency — 26 — 26 Investments (1) Equity securities: U.S. 3,277 — — 3,277 Fixed income securities: Corporate debt instruments — 431 — 431 Government securities 455 688 — 1,143 Cash equivalents and other 11 — — 11 Total assets $ 3,743 $ 1,343 $ 70 $ 5,156 Liabilities Derivatives: Commodity $ — $ 129 $ 6 $ 135 Interest rate — 142 — 142 Foreign currency — 2 — 2 Total liabilities $ — $ 273 $ 6 $ 279 (1) Includes investments held in the nuclear decommissioning and rabbi trusts. Excludes $213 million and $220 million of assets at March 31, 2019 and December 31, 2018, 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 2019 2018 (millions) Beginning balance $ 64 $ 150 Total realized and unrealized gains (losses): Included in earnings: Operating revenue (1 ) (1 ) Electric fuel and other energy-related purchases (4 ) (17 ) Included in other comprehensive income — 1 Included in regulatory assets/liabilities 7 (21 ) Settlements (1 ) 7 Purchases (10 ) — Transfers out of Level 3 (2 ) 1 Ending balance $ 53 $ 120
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: March 31, 2019 December 31, 2018 Carrying Amount Estimated Fair Value (1) Carrying Amount Estimated Fair Value (1) (millions) Dominion Energy Long-term debt, including securities due within one year (2) $ 35,123 $ 37,531 $ 29,952 $ 31,045 Credit facility borrowings — — 73 73 Junior subordinated notes (3) 3,431 3,471 3,430 3,358 Remarketable subordinated notes (3) 1,387 1,398 1,386 1,340 Virginia Power Long-term debt, including securities due within one year (3) $ 11,680 $ 12,782 $ 11,671 $ 12,400 Dominion Energy Gas Long-term debt, including securities due within one year (4) $ 7,473 $ 7,586 $ 7,770 $ 7,803 Affiliated long-term debt 395 395 — — Credit facility borrowings — — 73 73 (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 issues with short-term maturities and variable rates refinanced at current market rates is a reasonable estimate of their fair value. (2) Carrying amount includes amounts which represent the unamortized debt issuance costs, discount or premium, and foreign currency remeasurement adjustments. At March 31, 2019 and December 31, 2018, includes the valuation of certain fair value hedges associated with fixed rate debt of $(11) million and $(20) million, respectively. (3) Carrying amount includes amounts which represent the unamortized debt issuance costs, discount or premium. (4) Carrying amount includes amounts which represent the unamortized debt issuance costs, discount or premium, and foreign currency remeasurement adjustments.
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 March 31, 2019. 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 and futures: Natural gas (2) $ 59 Discounted cash flow Market price (per Dth) (3) (2) - 7 (1 ) FTRs 2 Discounted cash flow Market price (per MWh) (3) (1) - 2 —​​​​​​​​​​​​​​ Physical options: Natural gas 1 Option model Market price (per Dth) (3) 2 - 7 2 Price volatility (4) 10% - 54 % Total assets $ 62 Liabilities Financial forwards: FTRs $ 3 Discounted cash flow Market price (per MWh) (3) (1) - 2 1 Total liabilities $ 3 (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, Options, 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 March 31, 2019 Assets Derivatives: Commodity $ — $ 4 $ 62 $ 66 Investments (1) Equity securities: U.S. 1,683 — — 1,683 Fixed income securities: Corporate debt instruments — 233 — 233 Government securities 192 328 — 520 Total assets $ 1,875 $ 565 $ 62 $ 2,502 Liabilities Derivatives: Commodity $ — $ 6 $ 3 $ 9 Interest rate — 181 — 181 Total liabilities $ — $ 187 $ 3 $ 190 At December 31, 2018 Assets Derivatives: Commodity $ — $ 24 $ 66 $ 90 Interest rate — 3 — 3 Investments (1) Equity securities: U.S. 1,476 — — 1,476 Fixed income securities: Corporate debt instruments — 221 — 221 Government securities 164 343 — 507 Total assets $ 1,640 $ 591 $ 66 $ 2,297 Liabilities Derivatives: Commodity $ — $ 9 $ 6 $ 15 Interest rate — 88 — 88 Total liabilities $ — $ 97 $ 6 $ 103 (1) Includes investments held in the nuclear decommissioning trusts. Excludes $150 million and $160 million of assets at March 31, 2019 and December 31, 2018, 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 March 31, 2019 2018 (millions) Beginning balance $ 60 $ 147 Total realized and unrealized gains (losses): Included in earnings: Electric fuel and other energy-related purchases (4 ) (17 ) Included in regulatory assets/liabilities 8 (19 ) Settlements (5 ) 6 Ending balance $ 59 $ 117
Dominion Energy Gas Holdings, LLC
Fair Value, by Balance Sheet Grouping	The following table presents Dominion Energy Gas’ assets and liabilities for derivatives 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 March 31, 2019 Assets Foreign currency $ — $ 13 $ — $ 13 Total assets $ — $ 13 $ — $ 13 Liabilities Interest rate $ — $ 41 $ — $ 41 Foreign currency — 1 — 1 Total liabilities $ — $ 42 $ — $ 42 At December 31, 2018 Assets Commodity $ — $ 3 $ — $ 3 Interest rate — 2 — 2 Foreign currency — 26 — 26 Total assets $ — $ 31 $ — $ 31 Liabilities Interest rate $ — $ 17 $ — $ 17 Foreign currency — 2 — 2 Total liabilities $ — $ 19 $ — $ 19
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation	The following table presents the net change in Dominion Energy Gas’ assets and liabilities for derivatives measured at fair value on a recurring basis and included in the Level 3 fair value category. There were no Three Months Ended March 31, 2018 (millions) Beginning balance $ (2 ) Total realized and unrealized gains: Included in other comprehensive income 1 Transfers out of Level 3 1 Ending balance $ —

Derivatives and Hedge Account_2

Derivatives and Hedge Accounting Activities (Tables)	Nov. 18, 2019
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: March 31, 2019 December 31, 2018 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 $ 77 $ 5 $ — $ 72 $ 175 $ 12 $ — $ 163 Exchange 78 26 — 52 68 68 — — Interest rate contracts: Over-the-counter 3 — — 3 18 1 — 17 Foreign currency contracts: Over-the-counter 13 7 — 6 26 2 — 24 Total derivatives, subject to a master netting or similar arrangement $ 171 $ 38 $ — $ 133 $ 287 $ 83 $ — $ 204 (1) Excludes $2 million and $7 million of derivative assets at March 31, 2019 and December 31, 2018, respectively, which are not subject to master netting or similar arrangements.
Offsetting Liabilities	March 31, 2019 Offset in the Consolidated Balance Sheet December 31, 2018 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 $ 19 $ 5 $ 1 $ 13 $ 19 $ 12 $ — $ 7 Exchange 26 26 — — 115 68 47 — Interest rate contracts: Over-the-counter 323 6 — 317 142 1 — 141 Foreign currency contracts: Over-the-counter 1 1 — — 2 2 — — Total derivatives, subject to a master netting or similar arrangement $ 369 $ 38 $ 1 $ 330 $ 278 $ 83 $ 47 $ 148 (1) Excludes $ — 1
Schedule of Volume of Derivative Activity	The following table presents the volume of Dominion Energy’s derivative activity at March 31, 2019. 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 (1) 78 61 Basis 277 547 Electricity (MWh): Fixed price 7,915,870 1,100,600 FTRs 18,146,928 — NGLs (Gal) 25,074,000 — Interest rate (2) $ 2,554,400,000 $ 5,001,010,256 Foreign currency (2)(3) $ — $ 280,000,000 (1) Includes options. (2) Maturity is determined based on final settlement period. (3) Euro equivalent volumes are €250,000,000
Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss)	The following table presents selected information related to gains (losses) on cash flow hedges included in AOCI in Dominion Energy’s Consolidated Balance Sheet at March 31, 2019: AOCI After-Tax Amounts Expected to be Reclassified to Earnings During the Next 12 Months After-Tax Maximum Term (millions) Commodities: Gas $ 2 $ 1 43 months Electricity 33 24 21 months Interest rate (333 ) (31 ) 393 months Foreign currency 8 (1 ) 87 months Total $ (290 ) $ (7 )
Schedule of Amounts Recorded on Balance Sheet Related to Cumulative Basis Adjustments for Fair Value Hedges	The following table presents the amounts recorded on the balance sheet related to cumulative basis adjustments for fair value hedges: Carrying Amount of the Hedged Asset (Liability) Cumulative Amount of Fair Value Hedging Adjustments Included in the Carrying Amount of the Hedged Assets(Liabilities) March 31, 2019 December 31, 2018 March 31, 2019 December 31, 2018 (millions) Long-term debt $ (739 ) $ (731 ) $ 11 $ 19
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) March 31, 2019 ASSETS Current Assets Commodity $ 35 $ 59 $ 94 Interest rate 2 — 2 Total current derivative assets (1) 37 59 96 Noncurrent Assets Commodity 15 48 63 Interest rate 1 — 1 Foreign currency 13 — 13 Total noncurrent derivative assets (2) 29 48 77 Total derivative assets $ 66 $ 107 $ 173 LIABILITIES Current Liabilities Commodity $ 17 $ 21 $ 38 Interest rate 79 1 80 Foreign currency 1 — 1 Total current derivative liabilities (3) 97 22 119 Noncurrent Liabilities Commodity 1 6 7 Interest rate 230 13 243 Total noncurrent derivative liabilities (4) 231 19 250 Total derivative liabilities $ 328 $ 41 $ 369 December 31, 2018 ASSETS Current Assets Commodity $ 55 $ 154 $ 209 Interest rate 14 — 14 Total current derivative assets (1) 69 154 223 Noncurrent Assets Commodity 6 35 41 Interest rate 4 — 4 Foreign currency 26 — 26 Total noncurrent derivative assets (2) 36 35 71 Total derivative assets $ 105 $ 189 $ 294 LIABILITIES Current Liabilities Commodity $ 17 $ 112 $ 129 Interest rate 26 — 26 Foreign currency 2 — 2 Total current derivative liabilities (3) 45 112 157 Noncurrent Liabilities Commodity 5 1 6 Interest rate 116 — 116 Total noncurrent derivative liabilities (4) 121 1 122 Total derivative liabilities $ 166 $ 113 $ 279 (1) Current derivative assets are presented in other current assets in Dominion Energy’s Consolidated Balance Sheets. (2) Noncurrent derivative assets are presented in other deferred charges and other assets in Dominion Energy’s Consolidated Balance Sheets. (3) Current derivative liabilities are presented in other current liabilities in Dominion Energy’s Consolidated Balance Sheets. (4) Noncurrent derivative liabilities are presented in other deferred credits and other liabilities in Dominion Energy’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 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 (2) (millions) Three Months Ended March 31, 2019 Derivative type and location of gains (losses): Commodity: Operating revenue $ 54 Purchased gas 3 Total commodity $ 66 $ 57 $ — Interest rate (3) (84 ) (10 ) (84 ) Foreign currency (4) (11 ) (6 ) — Total $ (29 ) $ 41 $ (84 ) Three Months Ended March 31, 2018 Derivative type and location of gains (losses): Commodity: Operating revenue $ (12 ) Purchased gas (2 ) Electric fuel and other energy-related purchases 7 Total commodity $ 97 $ (7 ) $ — Interest rate (3) 38 (12 ) 68 Foreign currency (4) 13 8 — Total $ 148 $ (11 ) $ 68 (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 Statements of Income are classified in interest and related charges. (4) Amounts recorded in Dominion Energy’s Consolidated Statements of Income are classified in other income.
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) Three Months Ended March 31, 2019 2018 (millions) Derivative type and location of gains (losses): Commodity: Operating revenue $ 3 $ 6 Purchased gas 3 — Electric fuel and other energy-related purchases (9 ) (13 ) Total $ (3 ) $ (7 ) (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.
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: March 31, 2019 in the Consolidated Balance Sheet December 31, 2018 Balance Sheet Gross in the Consolidated Balance Sheet (1) Financial 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 $ 61 $ 2 $ — $ 59 $ 64 $ 6 $ — $ 58 Interest rate contracts: Over-the-counter — — — — 3 — — 3 Total derivatives, subject to a master netting or similar arrangement $ 61 $ 2 $ — $ 59 $ 67 $ 6 $ — $ 61 (1) Excludes $5 million and $26 million of derivative assets at March 31, 2019 and December 31, 2018, respectively, which are not subject to master netting or similar arrangements.
Offsetting Liabilities	March 31, 2019 December 31, 2018 Gross Liabilities Presented in the Consolidated Balance Sheet (1) Financial Instruments Cash Collateral Paid Net Amounts Gross Liabilities Presented in the (1) Financial Instruments Cash Collateral Paid Net Amounts (millions) Commodity contracts: Over-the-counter $ 3 $ 2 $ 1 $ — $ 6 $ 6 $ — $ — Interest rate contracts: Over-the-counter 181 — — 181 88 — — 88 Total derivatives, subject to a master netting or similar arrangement $ 184 $ 2 $ 1 $ 181 $ 94 $ 6 $ — $ 88 (1) Excludes $ 6 9
Schedule of Volume of Derivative Activity	The following table presents the volume of Virginia Power’s derivative activity at March 31, 2019. 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 (1) 20 26 Basis 182 473 Electricity (MWh): FTRs 18,146,928 — Interest rate (2) $ 850,000,000 $ 1,200,000,000 (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 March 31, 2019: AOCI After-Tax Amounts Expected to be After-Tax Maximum Term (millions) Interest rate $ (20 ) $ (1 ) 393​​​​​​​ months Total $ (20 ) $ (1 )
Fair Value of Derivatives	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) March 31, 2019 ASSETS Current Assets Commodity $ — $ 24 $ 24 Total current derivative assets (1) — 24 24 Noncurrent Assets Commodity — 42 42 Total noncurrent derivative assets (2) — 42 42 Total derivative assets $ — $ 66 $ 66 LIABILITIES Current Liabilities Commodity $ — $ 6 $ 6 Interest rate 44 — 44 Total current derivative liabilities (3) 44 6 50 Noncurrent Liabilities Commodity — 3 3 Interest rate 137 — 137 Total noncurrent derivatives liabilities (4) 137 3 140 Total derivative liabilities $ 181 $ 9 $ 190 December 31, 2018 ASSETS Current Assets Commodity $ — $ 60 $ 60 Interest rate 3 — 3 Total current derivative assets (1) 3 60 63 Noncurrent Assets Commodity — 30 30 Total noncurrent derivative assets (2) — 30 30 Total derivative assets $ 3 $ 90 $ 93 LIABILITIES Current Liabilities Commodity $ — $ 15 $ 15 Interest rate 10 — 10 Total current derivative liabilities (3) 10 15 25 Noncurrent Liabilities Interest rate 78 — 78 Total noncurrent derivatives liabilities (4) 78 — 78 Total derivative liabilities $ 88 $ 15 $ 103 (1) Current derivative assets are presented in other current assets in Virginia Power’s Consolidated Balance Sheets. (2) Noncurrent derivative assets are presented in other deferred charges and other assets in Virginia Power’s Consolidated Balance Sheets. (3) Current derivative liabilities are presented in other current liabilities in Virginia Power’s Consolidated Balance Sheets. (4) 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 in AOCI on Derivatives (1) Amount of Gain (Loss) Reclassified From AOCI to Income Increase (Decrease) in Derivatives (2) (millions) Three Months Ended March 31, 2019 Derivative type and location of gains (losses): Interest rate (3) $ (9 ) $ — $ (84 ) Total $ (9 ) $ — $ (84 ) Three Months Ended March 31, 2018 Derivative type and location of gains (losses): Interest rate (3) $ 7 $ — $ 68 Total $ 7 $ — $ 68 (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) Amounts recorded in Virginia Power’s Consolidated Statements of Income are classified in interest and related charges.
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) Three Months Ended March 31, 2019 2018 (millions) Derivative type and location of gains (losses): Commodity (2) $ (9 ) $ — Total $ (9 ) $ — (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) Amounts recorded in Virginia Power’s Consolidated Statements of Income are classified in electric fuel and other energy-related purchases.
Dominion Energy Gas Holdings, LLC
Offsetting Assets	The tables below present Dominion Energy Gas’ 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: March 31, 2019 December 31, 2018 Gross Assets Presented in the Consolidated Financial Instruments Cash Collateral Received Net Amounts Gross Assets Presented in the Consolidated Financial Instruments Cash Collateral Received Net Amounts (millions) Commodity contracts: Over-the-counter $ — $ — $ — $ — $ 3 $ — $ — $ 3 Interest rate contracts: Over-the-counter — — — — 2 — — 2 Foreign currency contracts: Over-the-counter 13 7 — 6 26 2 — 24 Total derivatives, $ 13 $ 7 $ — $ 6 $ 31 $ 2 $ — $ 29
Offsetting Liabilities	March 31, 2019 Gross Amounts Not Consolidated Balance December 31, 2018 Gross Amounts Not Offset in the Consolidated Balance Gross Financial Cash Collateral Paid Net Amounts Gross Financial Cash Collateral Paid Net Amounts (millions) Interest rate contracts: Over-the-counter $ 41 $ 6 $ — $ 35 $ 17 $ — $ — $ 17 Foreign currency contracts: Over-the-counter 1 1 — — 2 2 — — Total derivatives, $ 42 $ 7 $ — $ 35 $ 19 $ 2 $ — $ 17
Schedule of Volume of Derivative Activity	The following table presents the volume of Dominion Energy Gas’ derivative activity at March 31, 2019. 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 NGLs (Gal) 25,074,000 — Interest rate (1) $ 300,000,000 $ 1,000,000,000 Foreign currency (1)(2) $ — $ 280,000,000 (1) Maturity is based on final settlement period. (2) Euro equivalent volumes are €
Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss)	The following table presents selected information related to gains (losses) on cash flow hedges included in AOCI in Dominion Energy Gas’ Consolidated Balance Sheet at March 31, 2019: AOCI After-Tax Amounts Expected After- Tax Maximum Term (millions) Interest rate $ (56 ) $ (5 ) 309 months Foreign currency 8 (1 ) 87 months Total $ (48 ) $ (6 )
Fair Value of Derivatives	Fair Value and Gains and Losses on Derivative Instruments The following tables present the fair values of Dominion Energy Gas’ derivatives and where they are presented in its Consolidated Balance Sheets: Fair Value- Under Hedge Accounting Fair Value-Derivatives Not Under Hedge Accounting Total Fair Value (millions) March 31, 2019 ASSETS Noncurrent Assets Foreign currency $ 13 $ — $ 13 Total noncurrent derivative assets (1) 13 — 13 Total derivative assets $ 13 $ — $ 13 LIABILITIES Current Liabilities Interest rate $ 18 $ — $ 18 Foreign currency 1 — 1 Total current derivative liabilities (2) 19 — 19 Noncurrent Liabilities Interest rate 23 — 23 Total noncurrent derivative liabilities (3) 23 — 23 Total derivative liabilities $ 42 $ — $ 42 December 31, 2018 ASSETS Current Assets Commodity $ 3 $ — $ 3 Interest rate 2 — 2 Total current derivative assets (4) 5 — 5 Noncurrent Assets Foreign currency 26 — 26 Total noncurrent derivative assets (1) 26 — 26 Total derivative assets $ 31 $ — $ 31 LIABILITIES Current Liabilities Interest rate $ 9 $ — $ 9 Foreign currency 2 — 2 Total current derivative liabilities (2) 11 — 11 Noncurrent Liabilities Interest rate 8 — 8 Total noncurrent derivative liabilities (3) 8 — 8 Total derivative liabilities $ 19 $ — $ 19 (1) Noncurrent derivatives assets are presented in other deferred charges and other assets in Dominion Energy Gas’ Consolidated Balance Sheets. (2) Current derivative liabilities are presented in other current liabilities in Dominion Energy Gas’ Consolidated Balance Sheets. (3) Noncurrent derivative liabilities are presented in other deferred credits and other liabilities in Dominion Energy Gas’ Consolidated Balance Sheets. (4) Current derivative assets include $2 million , with the remainder recorded in
Schedule of Cash Flow Hedging Instruments, Statements of Financial Performance and Financial Position, Location	The following table presents the gains and losses on Dominion Energy Gas’ 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 Derivatives (1) Amount of Gain (Loss) Reclassified From AOCI to Income (millions) Three Months Ended March 31, 2019 Derivative Type and Location of Gains (Losses): Commodity: Net i ncome $ 2 Total commodity $ (1 ) $ 2 Interest rate (2) (24 ) 1 Foreign currency (3) (11 ) (6 ) Total $ (36 ) $ (3 ) Three Months Ended March 31, 2018 Derivative Type and Location of Gains (Losses): Commodity: Net income $ (3 ) Total commodity $ 4 $ (3 ) Interest rate (2) 2 (2 ) Foreign currency (3) 13 8 Total $ 19 $ 3 (1) Amounts deferred into AOCI have no associated effect in Dominion Energy Gas’ Consolidated Statements of Income. (2) Amounts recorded in Dominion Energy Gas’ Consolidated Statements of Income are classified in interest and related charges. (3) Amounts recorded in Dominion Energy Gas’ Consolidated Statements of Income are classified in other income.

Investments (Tables)

Investments (Tables)	Nov. 18, 2019
Equity and Fixed Income Securities, Insurance Contracts and Cash Equivalents in Decommissioning Trust Funds	Dominion Energy’s decommissioning trust funds are summarized below: Amortized Cost Total Unrealized Gains Total Unrealized Losses Recorded (millions) March 31, 2019 Equity securities: (1) U.S. $ 1,747 $ 2,002 $ (17 ) $ 3,732 Fixed income securities: (2) Corporate debt instruments 457 15 (2 ) 470 Government securities 1,076 29 (4 ) 1,101 Common/collective trust funds 72 — — 72 Insurance contracts 199 — — 199 Cash equivalents and other (3) 6 — — 6 Total $ 3,557 $ 2,046 $ (23 ) (4) $ 5,580 December 31, 2018 Equity securities: (1) U.S. $ 1,741 $ 1,640 $ (51 ) $ 3,330 Fixed income securities: (2) Corporate debt instruments 435 5 (9 ) 431 Government securities 1,092 17 (12 ) 1,097 Common/collective trust funds 76 — — 76 Cash equivalents and other (3) 4 — — 4 Total $ 3,348 $ 1,662 $ (72 ) (4) $ 4,938 (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 $4 million at March 31, 2019. (4) The fair value of securities in an unrealized loss position was $405 million and $833 million at March 31, 2019 and December 31, 2018, 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 March 31, (millions) 2019 2018 Net gains (losses) recognized during the period $ 414 $ (65 ) Less: Net gains recognized during the period on securities sold during the period (19 ) (19 ) Unrealized gains (losses) recognized during the period on securities still held at March 31, 2019 and 2018 (1) $ 395 $ (84 ) (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 March 31, 2019 by contractual maturity is as follows: Amount (millions) Due in one year or less $ 187 Due after one year through five years 382 Due after five years through ten years 394 Due after ten years 680 Total $ 1,643
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 March 31, 2019 2018 (millions) Proceeds from sales $ 506 $ 419 Realized gains (1) 43 36 Realized losses (1) 23 19 (1) Includes realized gains and losses recorded to the nuclear decommissioning trust regulatory liability.
Virginia Electric and Power Company
Equity and Fixed Income Securities, Insurance Contracts and Cash Equivalents in Decommissioning Trust Funds	Virginia Power’s decommissioning trust funds are summarized below: Amortized Cost Total Unrealized Gains Total Unrealized Losses Recorded (millions) March 31, 2019 Equity securities: (1) U.S. $ 871 $ 922 $ (9 ) $ 1,784 Fixed income securities: (2) Corporate debt instruments 227 7 (1 ) 233 Government securities 506 14 (1 ) 519 Common/collective trust funds 48 — — 48 Cash equivalents and other (3) 7 — — 7 Total $ 1,659 $ 943 $ (11 ) (4) $ 2,591 December 31, 2018 Equity securities: (1) U.S. $ 858 $ 751 $ (24 ) $ 1,585 Fixed income securities: (2) Corporate debt instruments 224 2 (5 ) 221 Government securities 504 7 (5 ) 506 Common/collective trust funds 51 — — 51 Cash equivalents and other (3) 6 — — 6 Total $ 1,643 $ 760 $ (34 ) (4) $ 2,369 (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 $7 million and $6 million at March 31, 2019 and December 31, 2018, respectively. (4) The fair value of securities in an unrealized loss position was $178 million and $404 million at March 31, 2019 and December 31, 2018, respectively.
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 March 31, (millions) 2019 2018 Net gains (losses) recognized during the period $ 186 $ (32 ) Less: Net gains recognized during the period on securities sold during the period (1 ) (15 ) Unrealized gains (losses) recognized during the period on securities still held at March 31, 2019 and 2018 (1) $ 185 $ (47 ) (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 March 31, 2019 by contractual maturity is as follows: Amount (millions) Due in one year or less $ 77 Due after one year through five years 145 Due after five years through ten years 219 Due after ten years 359 Total $ 800
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 March 31, 2019 2018 (millions) Proceeds from sales $ 253 $ 218 Realized gains (1) 10 18 Realized losses (1) 9 5 (1) Includes realized gains and losses recorded to the nuclear decommissioning trust regulatory liability.

Regulatory Assets and Liabili_2

Regulatory Assets and Liabilities (Tables)	Nov. 18, 2019
Regulated Operations [Abstract]
Schedule of Regulatory Assets	Regulatory assets and liabilities include the following: March 31, 2019 December 31, 2018 (millions) Dominion Energy Regulatory assets: Deferred cost of fuel used in electric generation (1) $ 117 $ 174 Deferred rate adjustment clause costs for Virginia electric utility (2)(3) 90 78 Deferred nuclear refueling outage costs (4) 70 69 Unrecovered NND Project costs (5) 138 — PJM transmission rates (6) 64 45 Other 246 130 Regulatory assets-current 725 496 Deferred cost of fuel used in electric generation (1) 123 83 Unrecognized pension and other postretirement benefit costs (7) 1,521 1,497 Deferred rate adjustment clause costs for Virginia electric utility (2)(3)(8) 194 230 Deferred project costs for gas utilities (9) 440 335 PJM transmission rates (6) 174 192 Interest rate hedges (10) 563 184 AROs and related funding (11) 350 — Cost of reacquired debt (12)(13) 203 3 Unrecovered NND Project costs (5) 2,607 — Ash pond and landfill closure costs (14) 935 27 Other 465 125 Regulatory assets-noncurrent 7,575 2,676 Total regulatory assets $ 8,300 $ 3,172 Regulatory liabilities: Provision for future cost of removal and AROs (15) $ 117 $ 117 Reserve for refunds and rate credits to electric utility customers (16) 137 71 Cost-of-service (17) 93 104 Income taxes refundable through future rates (18) 127 — Monetization of guarantee settlement (19) 67 — Other 71 64 Regulatory liabilities-current 612 356 Income taxes refundable through future rates (18) 5,034 4,071 Provision for future cost of removal and AROs (15) 2,222 1,409 Nuclear decommissioning trust (20) 1,247 1,070 Monetization of guarantee settlement (19) 1,020 — Reserve for refunds and rate credits to electric utility customers (16) 846 — Overrecovered other postretirement benefit costs (21) 129 120 Other 301 170 Regulatory liabilities-noncurrent 10,799 6,840 Total regulatory liabilities $ 11,411 $ 7,196 (1) Reflects deferred fuel expenses for the Virginia, North Carolina and South Carolina jurisdictions of Dominion Energy’s electric generation operations. (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, net of income taxes refundable from the 2017 Tax Reform Act for Virginia Power. See Note 13 for more information. (3) As a result of actions from the Virginia Commission in the first quarter of 2019 regarding the ratemaking treatment of excess deferred taxes from the adoption of the 2017 Tax Reform Act for all existing rate adjustment clauses, Virginia Power recorded a $29 million ($22 million after-tax) (4) 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. (5) Reflects expenditures by DESC associated with the NND Project, which pursuant to the SCANA Merger Approval Order, will be recovered from DESC electric service customers over a 20-year (6) Reflects amounts to be recovered through retail rates in Virginia for payments Virginia Power will make to PJM over a ten (7) 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. (8) During the first quarter of 2019, Virginia Power recorded a charge of $17 million ($13 million after-tax) write-off (9) Primarily reflects amounts expected to be collected from or owed to gas customers in Dominion Energy’s service territories associated with current and prospective rider projects, including CEP, PIR, and pipeline integrity management. See Note 13 for more information. (10) 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 30 years. (11) Represents deferred depreciation and accretion expense related to legal obligations associated with the future retirement of property, plant and equipment, excluding amounts related to CCRs, for DESC and PSNC. The AROs primarily relate to nuclear decommissioning activities and are expected to be recovered over the related property lives and periods of decommissioning which may range up to approximately 106 years. (12) Cost of the reacquisition of debt are deferred and amortized as interest expense over the would-be (13) In March 2019, DESC purchased certain of its first mortgage bonds having an aggregate purchase price of $1.2 billion, as discussed in Note 16. As a result of this transaction, Dominion Energy incurred costs, including write-off (14) Primarily reflects legislation enacted in Virginia in March 2019 which requires any CCR unit located at certain Virginia Power stations to be closed by removing the CCRs to an approved landfill or through recycling for beneficial reuse. See Note 17 for additional information. (15) 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. (16) Reflects amounts previously collected from retail electric customers of DESC for the NND Project to be credited over an estimated 11-year one-time 10-K , as updated in Current Report on Form 8-K, filed November 18, 2019, (17) Balance refundable to customers related to the decrease in revenue requirements for recovery of income taxes at the Companies’ regulated electric generation and electric and natural gas distribution operations. See Notes 3 and 13 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K , as updated in Current Report on Form 8-K, filed November 18, 2019, (18) 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. (19) Reflects amounts to be refunded to DESC electric service customers over a 20-year (20) 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. (21) Reflects a regulatory liability for the collection of postretirement benefit costs allowed in rates in excess of expense incurred. March 31, 2019 December 31, 2018 (millions) Virginia Power Regulatory assets: Deferred cost of fuel used in electric generation (1) $ 112 $ 174 Deferred rate adjustment clause costs (2)(3) 90 78 Deferred nuclear refueling outage costs (4) 70 69 PJM transmission rates (5) 64 45 Other 51 58 Regulatory assets-current (6) 387 424 Deferred rate adjustment clause costs (2)(3)(7) 194 230 PJM transmission rates (5) 174 192 Interest rate hedges (8) 235 151 Deferred cost of fuel used in electric generation (1) 123 83 Ash pond and landfill closure costs (9) 935 27 Other 58 54 Regulatory assets-noncurrent 1,719 737 Total regulatory assets $ 2,106 $ 1,161 Regulatory liabilities: Provision for future cost of removal (10) $ 92 $ 92 Cost-of-service (11) 88 95 Reserve for rate credits to electric utility customers (12) — 71 Income taxes refundable through future rates (13) 74 — Other 27 41 Regulatory liabilities-current 281 299 Income taxes refundable through future rates (13) 2,500 2,579 Nuclear decommissioning trust (14) 1,247 1,070 Provision for future cost of removal (10) 959 940 Other 102 58 Regulatory liabilities-noncurrent 4,808 4,647 Total regulatory liabilities $ 5,089 $ 4,946 (1) Reflects deferred fuel expenses for the Virginia and North Carolina jurisdictions of Virginia Power’s generation operations. (2) Primarily reflects deferrals under Virginia Power’s electric transmission FERC formula rate and the deferral of costs associated with certain current and prospective rider projects, net of income taxes refundable from the 2017 Tax Reform Act for Virginia Power. See Note 13 for more information. (3) As a result of actions from the Virginia Commission in the first quarter of 2019 regarding the ratemaking treatment of excess deferred taxes from the adoption of the 2017 Tax Reform Act for all existing rate adjustment clauses, Virginia Power recorded a $29 million ($22 million after-tax) (4) 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. (5) Reflects amounts to be recovered through retail rates in Virginia for payments Virginia Power will make to PJM over a ten (6) Current regulatory assets are presented in other current assets in Virginia Power’s Consolidated Balance Sheets. (7) During the first quarter of 2019, Virginia Power recorded a charge of $17 million ($13 million after-tax) write-off (8) 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 21 years. (9) Primarily reflects legislation enacted in Virginia in March 2019 which requires any CCR unit located at certain Virginia Power stations to be closed by removing the CCR to an approved landfill or through recycling for beneficial reuse. See Note 17 for additional information. (10) 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. (11) Balance refundable to customers related to the decrease in revenue requirements for recovery of income taxes at regulated electric generation and distribution operations. See Note 13 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K , as updated in Current Report on Form 8-K, filed November 18, 2019, (12) Charge associated with Virginia legislation enacted in March 2018 that required one-time 10-K , as updated in Current Report on Form 8-K, filed November 18, 2019, (13) 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. (14) 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. March 31, 2019 December 31, 2018 (millions) Dominion Energy Gas Regulatory assets: Unrecovered gas costs (1) $ 1 $ 1 Other 7 7 Regulatory assets-current (2) 8 8 Unrecognized pension and other postretirement benefit costs (3) 16 15 Interest rate hedges (4) 33 33 Other 3 4 Regulatory assets-noncurrent (5) 52 52 Total regulatory assets $ 60 $ 60 Regulatory liabilities: Provision for future cost of removal and AROs (6) $ 10 $ 9 Overrecovered gas costs (1) 7 7 Other 12 8 Regulatory liabilities-current (7) 29 24 Income taxes refundable through future rates (8) 572 530 Provision for future cost of removal and AROs (6) 115 113 Overrecovered other postretirement benefit costs (9) 113 106 Other 16 16 Regulatory liabilities-noncurrent 816 765 Total regulatory liabilities $ 845 $ 789 (1) Reflects unrecovered or overrecovered gas costs at regulated gas operations, which are recovered or refunded through filings with the applicable regulatory authority. (2) Current regulatory assets are presented in other current assets in Dominion Energy Gas’ Consolidated Balance Sheets. (3) 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 Gas’ rate-regulated subsidiaries. (4) 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 30 years. (5) Noncurrent regulatory assets are presented in other deferred charges and other assets in Dominion Energy Gas’ Consolidated Balance Sheets. (6) Rates charged to customers by Dominion Energy Gas’ 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. (7) Current regulatory liabilities are presented in other current liabilities in Dominion Energy Gas’ Consolidated Balance Sheets. (8) 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. (9) Reflects a regulatory liability for the collection of postretirement benefit costs allowed in rates in excess of expense incurred.
Schedule of Regulatory Liabilities	Regulatory assets and liabilities include the following: March 31, 2019 December 31, 2018 (millions) Dominion Energy Regulatory assets: Deferred cost of fuel used in electric generation (1) $ 117 $ 174 Deferred rate adjustment clause costs for Virginia electric utility (2)(3) 90 78 Deferred nuclear refueling outage costs (4) 70 69 Unrecovered NND Project costs (5) 138 — PJM transmission rates (6) 64 45 Other 246 130 Regulatory assets-current 725 496 Deferred cost of fuel used in electric generation (1) 123 83 Unrecognized pension and other postretirement benefit costs (7) 1,521 1,497 Deferred rate adjustment clause costs for Virginia electric utility (2)(3)(8) 194 230 Deferred project costs for gas utilities (9) 440 335 PJM transmission rates (6) 174 192 Interest rate hedges (10) 563 184 AROs and related funding (11) 350 — Cost of reacquired debt (12)(13) 203 3 Unrecovered NND Project costs (5) 2,607 — Ash pond and landfill closure costs (14) 935 27 Other 465 125 Regulatory assets-noncurrent 7,575 2,676 Total regulatory assets $ 8,300 $ 3,172 Regulatory liabilities: Provision for future cost of removal and AROs (15) $ 117 $ 117 Reserve for refunds and rate credits to electric utility customers (16) 137 71 Cost-of-service (17) 93 104 Income taxes refundable through future rates (18) 127 — Monetization of guarantee settlement (19) 67 — Other 71 64 Regulatory liabilities-current 612 356 Income taxes refundable through future rates (18) 5,034 4,071 Provision for future cost of removal and AROs (15) 2,222 1,409 Nuclear decommissioning trust (20) 1,247 1,070 Monetization of guarantee settlement (19) 1,020 — Reserve for refunds and rate credits to electric utility customers (16) 846 — Overrecovered other postretirement benefit costs (21) 129 120 Other 301 170 Regulatory liabilities-noncurrent 10,799 6,840 Total regulatory liabilities $ 11,411 $ 7,196 (1) Reflects deferred fuel expenses for the Virginia, North Carolina and South Carolina jurisdictions of Dominion Energy’s electric generation operations. (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, net of income taxes refundable from the 2017 Tax Reform Act for Virginia Power. See Note 13 for more information. (3) As a result of actions from the Virginia Commission in the first quarter of 2019 regarding the ratemaking treatment of excess deferred taxes from the adoption of the 2017 Tax Reform Act for all existing rate adjustment clauses, Virginia Power recorded a $29 million ($22 million after-tax) (4) 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. (5) Reflects expenditures by DESC associated with the NND Project, which pursuant to the SCANA Merger Approval Order, will be recovered from DESC electric service customers over a 20-year (6) Reflects amounts to be recovered through retail rates in Virginia for payments Virginia Power will make to PJM over a ten (7) 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. (8) During the first quarter of 2019, Virginia Power recorded a charge of $17 million ($13 million after-tax) write-off (9) Primarily reflects amounts expected to be collected from or owed to gas customers in Dominion Energy’s service territories associated with current and prospective rider projects, including CEP, PIR, and pipeline integrity management. See Note 13 for more information. (10) 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 30 years. (11) Represents deferred depreciation and accretion expense related to legal obligations associated with the future retirement of property, plant and equipment, excluding amounts related to CCRs, for DESC and PSNC. The AROs primarily relate to nuclear decommissioning activities and are expected to be recovered over the related property lives and periods of decommissioning which may range up to approximately 106 years. (12) Cost of the reacquisition of debt are deferred and amortized as interest expense over the would-be (13) In March 2019, DESC purchased certain of its first mortgage bonds having an aggregate purchase price of $1.2 billion, as discussed in Note 16. As a result of this transaction, Dominion Energy incurred costs, including write-off (14) Primarily reflects legislation enacted in Virginia in March 2019 which requires any CCR unit located at certain Virginia Power stations to be closed by removing the CCRs to an approved landfill or through recycling for beneficial reuse. See Note 17 for additional information. (15) 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. (16) Reflects amounts previously collected from retail electric customers of DESC for the NND Project to be credited over an estimated 11-year one-time 10-K , as updated in Current Report on Form 8-K, filed November 18, 2019, (17) Balance refundable to customers related to the decrease in revenue requirements for recovery of income taxes at the Companies’ regulated electric generation and electric and natural gas distribution operations. See Notes 3 and 13 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K , as updated in Current Report on Form 8-K, filed November 18, 2019, (18) 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. (19) Reflects amounts to be refunded to DESC electric service customers over a 20-year (20) 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. (21) Reflects a regulatory liability for the collection of postretirement benefit costs allowed in rates in excess of expense incurred. March 31, 2019 December 31, 2018 (millions) Virginia Power Regulatory assets: Deferred cost of fuel used in electric generation (1) $ 112 $ 174 Deferred rate adjustment clause costs (2)(3) 90 78 Deferred nuclear refueling outage costs (4) 70 69 PJM transmission rates (5) 64 45 Other 51 58 Regulatory assets-current (6) 387 424 Deferred rate adjustment clause costs (2)(3)(7) 194 230 PJM transmission rates (5) 174 192 Interest rate hedges (8) 235 151 Deferred cost of fuel used in electric generation (1) 123 83 Ash pond and landfill closure costs (9) 935 27 Other 58 54 Regulatory assets-noncurrent 1,719 737 Total regulatory assets $ 2,106 $ 1,161 Regulatory liabilities: Provision for future cost of removal (10) $ 92 $ 92 Cost-of-service (11) 88 95 Reserve for rate credits to electric utility customers (12) — 71 Income taxes refundable through future rates (13) 74 — Other 27 41 Regulatory liabilities-current 281 299 Income taxes refundable through future rates (13) 2,500 2,579 Nuclear decommissioning trust (14) 1,247 1,070 Provision for future cost of removal (10) 959 940 Other 102 58 Regulatory liabilities-noncurrent 4,808 4,647 Total regulatory liabilities $ 5,089 $ 4,946 (1) Reflects deferred fuel expenses for the Virginia and North Carolina jurisdictions of Virginia Power’s generation operations. (2) Primarily reflects deferrals under Virginia Power’s electric transmission FERC formula rate and the deferral of costs associated with certain current and prospective rider projects, net of income taxes refundable from the 2017 Tax Reform Act for Virginia Power. See Note 13 for more information. (3) As a result of actions from the Virginia Commission in the first quarter of 2019 regarding the ratemaking treatment of excess deferred taxes from the adoption of the 2017 Tax Reform Act for all existing rate adjustment clauses, Virginia Power recorded a $29 million ($22 million after-tax) (4) 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. (5) Reflects amounts to be recovered through retail rates in Virginia for payments Virginia Power will make to PJM over a ten (6) Current regulatory assets are presented in other current assets in Virginia Power’s Consolidated Balance Sheets. (7) During the first quarter of 2019, Virginia Power recorded a charge of $17 million ($13 million after-tax) write-off (8) 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 21 years. (9) Primarily reflects legislation enacted in Virginia in March 2019 which requires any CCR unit located at certain Virginia Power stations to be closed by removing the CCR to an approved landfill or through recycling for beneficial reuse. See Note 17 for additional information. (10) 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. (11) Balance refundable to customers related to the decrease in revenue requirements for recovery of income taxes at regulated electric generation and distribution operations. See Note 13 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K , as updated in Current Report on Form 8-K, filed November 18, 2019, (12) Charge associated with Virginia legislation enacted in March 2018 that required one-time 10-K , as updated in Current Report on Form 8-K, filed November 18, 2019, (13) 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. (14) 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. March 31, 2019 December 31, 2018 (millions) Dominion Energy Gas Regulatory assets: Unrecovered gas costs (1) $ 1 $ 1 Other 7 7 Regulatory assets-current (2) 8 8 Unrecognized pension and other postretirement benefit costs (3) 16 15 Interest rate hedges (4) 33 33 Other 3 4 Regulatory assets-noncurrent (5) 52 52 Total regulatory assets $ 60 $ 60 Regulatory liabilities: Provision for future cost of removal and AROs (6) $ 10 $ 9 Overrecovered gas costs (1) 7 7 Other 12 8 Regulatory liabilities-current (7) 29 24 Income taxes refundable through future rates (8) 572 530 Provision for future cost of removal and AROs (6) 115 113 Overrecovered other postretirement benefit costs (9) 113 106 Other 16 16 Regulatory liabilities-noncurrent 816 765 Total regulatory liabilities $ 845 $ 789 (1) Reflects unrecovered or overrecovered gas costs at regulated gas operations, which are recovered or refunded through filings with the applicable regulatory authority. (2) Current regulatory assets are presented in other current assets in Dominion Energy Gas’ Consolidated Balance Sheets. (3) 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 Gas’ rate-regulated subsidiaries. (4) 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 30 years. (5) Noncurrent regulatory assets are presented in other deferred charges and other assets in Dominion Energy Gas’ Consolidated Balance Sheets. (6) Rates charged to customers by Dominion Energy Gas’ 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. (7) Current regulatory liabilities are presented in other current liabilities in Dominion Energy Gas’ Consolidated Balance Sheets. (8) 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. (9) Reflects a regulatory liability for the collection of postretirement benefit costs allowed in rates in excess of expense incurred. two

Regulatory Matters (Tables)

Regulatory Matters (Tables)	Nov. 18, 2019
Regulated Operations [Abstract]
Summary of Additional Virginia Power Electric Transmission Projects Approved or Applied	Additional Virginia Power electric transmission projects approved or applied for in 2019 are as follows: Description and Location of Project Application Date Approval Date Type of Line Miles of Lines Cost Estimate (millions) Partial rebuild of overhead transmission lines in Alleghany County, Virginia and Covington, Virginia August 2018 April 2019 138 kV 5 $ 15 Rebuild and operate between Lanexa and the Northern Neck in Virginia June 2018 February 2019 230 kV 3 30 Rebuild and operate the Glebe substation and relocate and operate in Arlington County, Virginia and the City of Alexandria, Virginia existing overhead line underground March 2019 Pending 230 kV <1 125 Rebuild and operate between Valley, Virginia and Mt. Storm, West Virginia April 2019 Pending 500 kV 65 290

Leases (Tables)

Leases (Tables)	Nov. 18, 2019
Leases [Abstract]
Lease Assets and Liabilities Recorded in Consolidated Balance Sheets	At March 31, 2019, the Companies had the following lease assets and liabilities recorded in the Consolidated Balance Sheets: March 31, 2019 (millions) Dominion Energy Lease assets: Operating lease assets $ 486 Finance lease assets (1) 79 Total lease assets $ 565 Lease liabilities: Operating lease liabilities (2) $ 62 Finance lease liabilities (3) 14 Total lease liabilities - current 76 Operating lease liabilities 418 Finance lease liabilities (4) 66 Total lease liabilities - noncurrent 484 Total lease liabilities $ 560 Virginia Power Operating lease assets $ 202 Finance lease assets (1) 8 Total lease assets $ 210 Lease liabilities: Operating lease liabilities (2) $ 33 Finance lease liabilities (3) 2 Total lease liabilities - current 35 Operating lease liabilities 169 Finance lease liabilities (4) 5 Total lease liabilities - noncurrent 174 Total lease liabilities $ 209 Dominion Energy Gas Operating lease assets $ 41 Finance lease assets (1) 1 Total lease assets (5) $ 42 Lease liabilities: Operating lease liabilities (2) $ 6 Finance lease liabilities (3) — Total lease liabilities - current 6 Operating lease liabilities 33 Finance lease liabilities (4) 2 Total lease liabilities - noncurrent 35 Total lease liabilities (5) $ 41 (1) Included in property, plant and equipment in the Companies’ Consolidated Balance Sheets, net of $29 million, $2 million and $1 million of accumulated amortization at Dominion Energy, Virginia Power and Dominion Energy Gas, respectively, at March 31, 2019. (2) Included in other current liabilities in the Companies’ Consolidated Balance Sheets. (3) Included in securities due within one year in the Companies’ Consolidated Balance Sheets. (4) Included in long-term debt in the Companies’ Consolidated Balance Sheets. (5) Excludes $25 million of lease assets recorded in assets of discontinued operations and $25 million of lease liabilities recorded in liabilities of discontinued operations.
Summary of Total Lease Cost	For the three months ended March 31, 2019, total lease cost associated with the Companies’ lessee leasing arrangements consisted of the following: Three Months Ended March 31, 2019 (millions) Dominion Energy Finance lease cost: Amortization $ 3 Interest 1 Operating lease cost 25 Short-term lease cost 6 Variable lease cost 2 Total lease cost $ 37 Virginia Power Operating lease cost $ 10 Short-term lease cost 2 Variable lease cost 1 Total lease cost $ 13 Dominion Energy Gas Operating lease cost $ 2 Short-term lease cost 1 Total lease cost $ 3
Cash Paid for Amounts Included in Measurement of Lease Liabilities	For the three months ended March 31, 2019, cash paid for amounts included in the measurement of lease liabilities consisted of the following amounts, included in the Companies’ Consolidated Statements of Cash Flows: Three Months Ended March 31, 2019 (millions) Dominion Energy Operating cash flows for finance leases $ 1 Operating cash flows for operating leases 32 Financing cash flows for finance leases 3 Virginia Power Operating cash flows for operating leases 13 Dominion Energy Gas Operating cash flows for operating leases 3
Weighted Average Remaining Lease Term and Weighted Discounted Rate for Finance and Operating Leases	At March 31, 2019, the weighted average remaining lease term and weighted discount rate for the Companies’ finance and operating leases were as follows: March 31, 2019 Dominion Energy Weighted average remaining lease term - finance leases 7 years Weighted average remaining lease term - operating leases 21 years Weighted average discount rate - finance leases 4.66 % Weighted average discount rate - operating leases 4.61 % Virginia Power Weighted average remaining lease term - finance leases 6 years Weighted average remaining lease term - operating leases 16 years Weighted average discount rate - finance leases 4.99 % Weighted average discount rate - operating leases 4.47 % Dominion Energy Gas Weighted average remaining lease term - finance leases 6 years Weighted average remaining lease term - operating leases 9 years Weighted average discount rate - finance leases 5.04 % Weighted average discount rate - operating leases 4.44 %
Scheduled Maturities of Lease Liabilities	The Companies’ lease liabilities have the following scheduled maturities: Maturity of Lease Liabilities Dominion Energy Virginia Power Dominion Energy Gas (1) (millions) Operating Finance Operating Finance Operating Finance 2019 $ 54 $ 14 $ 30 $ 2 $ 11 $ 1 2020 66 16 36 1 13 1 2021 58 14 31 1 11 1 2022 49 12 24 1 9 1 2023 39 9 19 1 6 - After 2023 532 33 162 2 24 1 Total undiscounted lease payments 798 98 302 8 74 5 Present value adjustment (318 ) (18 ) (100 ) (1 ) (13 ) (1 ) Present value of lease liabilities $ 480 $ 80 $ 202 $ 7 $ 61 $ 4 (1) Includes amounts reflected in discontinued operations.

Significant Financing Transac_2

Significant Financing Transactions (Tables)	Nov. 18, 2019
Debt Instrument [Line Items]
Schedule of Line of Credit Facilities	At March 31, 2019, 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 $ 2,393 $ 90 $ 3,517 (1) This credit facility matures in March 2023 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 March 31, 2019, Virginia Power’s share of commercial paper and letters of credit outstanding under its joint credit facility with Dominion Energy, Dominion Energy Gas, 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 $ 595 $ 16 (1) The full amount of the facility is available to Virginia Power, less any amounts outstanding to co-borrowers sub-limit sub-limit sub-limit, sub-limit sub-limit,
Dominion Energy Gas Holdings, LLC
Debt Instrument [Line Items]
Schedule of Line of Credit Facilities	At March 31, 2019, Dominion Energy Gas’ share of commercial paper and letters of credit outstanding under its joint credit facility with Dominion Energy, Virginia Power, Questar Gas and DESC was as follows: Facility Limit (1) Outstanding Commercial Paper Outstanding Letters of Credit (millions) Joint revolving credit facility (1) $ 1,500 $ 280 $ — (1) A maximum of $1.5 billion of the facility is available to Dominion Energy Gas, assuming adequate capacity is available after giving effect to uses by co-borrowers sub-limit sub-limit sub-limit, sub-limit sub-limit,

Commitments and Contingencies (

Commitments and Contingencies (Tables)	Nov. 18, 2019
Commitments and Contingencies Disclosure [Abstract]
Schedule Of Subsidiary Guarantees	At March 31, 2019, Dominion Energy had issued the following subsidiary guarantees: Maximum Exposure (millions) Commodity transactions (1) $ 2,334 Nuclear obligations (2) 180 Cove Point (3) 1,900 Solar (4) 659 Other (5) 426 Total (6) $ 5,499 (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 related to certain DGI subsidiaries regarding all aspects of running a nuclear facility. (3) Guarantees related to Cove Point, in support of terminal services, transportation and construction. Cove Point has two guarantees that have no maximum limit and, therefore, are not included in this amount. (4) Includes guarantees to facilitate the development of solar projects. Also includes guarantees entered into by DGI on behalf of certain subsidiaries to facilitate the acquisition and development of solar projects. (5) Guarantees related to other miscellaneous contractual obligations such as leases, environmental obligations, construction projects and insurance programs. Due to the uncertainty of workers’ compensation claims, the parental guarantee has no stated limit. (6) Excludes Dominion Energy’s guarantee for the construction of the new corporate office property discussed in Note 22 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2018 , as updated in Current Report on Form 8-K, filed November 18, 2019.

Related-Party Transactions (Tab

Related-Party Transactions (Tables)	Nov. 18, 2019
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 March 31, 2019 2018 (millions) Commodity purchases from affiliates $ 272 $ 398 Services provided by affiliates (1) 119 120 Services provided to affiliates 6 6 (1) Includes capitalized expenditures of $33 million and $37 million for the three months ended March 31, 2019 and 2018, respectively.
Dominion Energy Gas Holdings, LLC
Schedule of Related Party Transactions	Presented below are Dominion Energy Gas’ significant transactions with DES, DECGS DEQPS and other affiliates and related parties: Three Months Ended March 31, 2019 2018 (millions) Sales of natural gas and transportation and storage services to affiliates $ 67 $ 46 Services provided by related parties (1) 45 44 Services provided to related parties (2) 45 59 (1) Includes capitalized expenditures of $6 million and $12 million for the three months ended March 31, 2019 and 2018, respectively. (2) Amounts primarily attributable to Atlantic Coast Pipeline, a related-party VIE.
Schedule of Related Party Transactions	The following table presents affiliated and related party balances reflected in Dominion Energy Gas’ Consolidated Balance Sheets: March 31, 2019 December 31, 2018 (millions) Other receivables (1) $ 12 $ 13 Imbalances receivable from affiliates 1 16 Imbalances payable to affiliates (2) 1 4 (1) Represents amounts due from Atlantic Coast Pipeline, a related-party VIE. (2) Amounts are presented in other current liabilities in Dominion Energy Gas’ Consolidated Balance Sheets.

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	Nov. 18, 2019
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net Periodic Benefit Cost (Credit)	The components of Dominion Energy’s provision for net periodic benefit cost (credit) were as follows: Pension Benefits Other Postretirement Benefits 2019 2018 2019 2018 (millions) Three Months Ended March 31, Service cost $ 40 $ 39 $ 7 $ 7 Interest cost 101 84 17 14 Expected return on plan assets (177 ) (165 ) (33 ) (36 ) Amortization of prior service credit — — (13 ) (13 ) Amortization of net actuarial loss 39 48 4 3 Settlements 2 — — — Net periodic benefit cost (credit) $ 5 $ 6 $ (18 ) $ (25 )
Dominion Energy Gas Holdings, LLC
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net Periodic Benefit Cost (Credit)	The components of Dominion Energy Gas’ provision for net periodic benefit cost (credit) for employees represented by collective bargaining units were as follows: Pension Benefits Other Postretirement Benefits 2019 2018 2019 2018 (millions) Three Months Ended March 31, Service cost $ 4 $ 4 $ 1 $ 1 Interest cost 8 7 3 3 Expected return on plan assets (39 ) (37 ) (7 ) (8 ) Amortization of prior service credit — — (1 ) (1 ) Amortization of net actuarial loss 5 5 1 1 Net periodic benefit credit $ (22 ) $ (21 ) $ (3 ) $ (4 )

Operating Segments (Tables)

Operating Segments (Tables)	Nov. 18, 2019
Segment Reporting Information [Line Items]
Segment Reporting Disclosure Other Information	A description of the operations included in the Companies’ primary operating segments is as follows: Primary Operating Segment Description of Operations Dominion Virginia Power Dominion Power Delivery Regulated electric distribution X X Regulated electric transmission X X Power Generation Regulated electric generation fleet X X Merchant electric generation fleet X Gas Infrastructure Gas transmission and storage X X Gas distribution and storage X Gas gathering and processing X LNG terminalling and storage X X Nonregulated retail energy marketing X Southeast Energy Regulated electric distribution X Regulated electric transmission X Regulated electric generation fleet X Gas distribution and storage X Nonregulated retail energy marketing X
Schedule of Segment Reporting Information, by Segment	The following table presents segment information pertaining to Dominion Energy’s operations: Power Delivery Power Generation Gas Infrastructure Southeast Energy Corporate and Other Adjustments/ Eliminations Consolidated Total (millions) Three Months Ended March 31, 2019 Total revenue from external customers $ 598 $ 1,745 $ 1,373 $ 1,182 $ (1,040 ) $ — $ 3,858 Intersegment revenue 6 4 26 — 184 (220 ) — Total operating revenue 604 1,749 1,399 1,182 (856 ) (220 ) 3,858 Net income (loss) attributable to Dominion Energy 155 308 359 132 (1,634 ) — (680 ) Three Months Ended March 31, 2018 Total revenue from external customers $ 563 $ 1,860 $ 1,222 $ (207 ) $ 28 $ 3,466 Intersegment revenue 6 2 6 175 (189 ) — Total operating revenue 569 1,862 1,228 (32 ) (161 ) 3,466 Net income (loss) attributable to Dominion Energy 156 348 327 (328 ) — 503
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: Power Delivery Power Generation Corporate and Other Consolidated Total (millions) Three Months Ended March 31, 2019 Operating revenue $ 598 $ 1,396 $ (29 ) $ 1,965 Net income (loss) 154 204 (338 ) 20 Three Months Ended March 31, 2018 Operating revenue $ 563 $ 1,400 $ (215 ) $ 1,748 Net income (loss) 154 222 (192 ) 184

Significant Accounting Polici_4

Significant Accounting Policies (Narrative) (Detail) $ in Millions	1 Months Ended		3 Months Ended		12 Months Ended
	Mar. 31, 2019USD ($)Facility	Jan. 31, 2019USD ($)MW	Mar. 31, 2019USD ($)	Mar. 31, 2018USD ($)	Dec. 31, 2018	Jan. 01, 2019USD ($)
Significant Accounting Policies [Line Items]
Asset impairment charges			$ 835	$ 1
Option to extend, description, operating lease			Certain of the Companies’ leases include one or more options to renew, with renewal terms that can extend the lease from one to 70 years.
Estimated useful life of finite-lived intangible asset			30 years
Operating lease assets	$ 486		$ 486			$ 504
Minimum
Significant Accounting Policies [Line Items]
Lease renewal term, operating lease	1 year		1 year
Maximum [Member]
Significant Accounting Policies [Line Items]
Lease renewal term, operating lease	70 years		70 years
Virginia Electric and Power Company
Significant Accounting Policies [Line Items]
Asset impairment charges			$ 546
MW Capacity | MW		1,292
Number of facilities in cold reserve units retired | Facility	6
Operating lease assets	$ 202		202			209
Virginia Electric and Power Company | Impairment of Assets and Other Charges
Significant Accounting Policies [Line Items]
Asset impairment charges	369	$ 160
Asset impairment charges after tax	275	$ 119
Dominion Energy Gas Holdings, LLC
Significant Accounting Policies [Line Items]
Operating lease assets	$ 41		$ 41			$ 64
Dominion Energy Midstream Partners, LP | Common and Subordinated Units
Significant Accounting Policies [Line Items]
Ownership interest percentage of limited partner interests					60.90%
Dominion Energy Midstream Partners, LP | Convertible Preferred Units
Significant Accounting Policies [Line Items]
Ownership interest percentage of limited partner interests					37.50%
Merchant Solar Projects | Terra Nova Renewable Partners
Significant Accounting Policies [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired	50.00%		50.00%
Percentage of equity interest sold to noncontrolling interest owners	33.00%		33.00%
Merchant Solar Projects | Terra Nova Renewable Partners | Call Option
Significant Accounting Policies [Line Items]
Percentage ownership in total units	67.00%		67.00%

Significant Accounting Polici_5

Significant Accounting Policies (Reconciliation of Total Cash, Restricted Cash and Equivalents (Detail) - USD ($) $ in Millions		Mar. 31, 2019	Dec. 31, 2018		Mar. 31, 2018		Dec. 31, 2017
Cash Cash Equivalents And Restricted Cash [Line Items]
Cash and cash equivalents		$ 422	$ 268	[1]	$ 189		$ 120
Restricted cash and equivalents	[2]	205	123		145		65
Cash, restricted cash and equivalents shown in the Consolidated Statements of Cash Flows		627	391		334		185
Virginia Electric and Power Company
Cash Cash Equivalents And Restricted Cash [Line Items]
Cash and cash equivalents		14	29	[3]	6		14
Restricted cash and equivalents	[2]	9	9		10		10
Cash, restricted cash and equivalents shown in the Consolidated Statements of Cash Flows		23	38		16		24
Dominion Energy Gas Holdings, LLC
Cash Cash Equivalents And Restricted Cash [Line Items]
Cash and cash equivalents		143	99	[4]	38	[5]	18	[5]
Restricted cash and equivalents	[2]	62	90		127		39
Cash, restricted cash and equivalents shown in the Consolidated Statements of Cash Flows		$ 209	$ 198		$ 165		$ 57
[1]	Dominion Energy’s Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.
[2]	Restricted cash and equivalent balances are presented within other current assets in the Companies’ Consolidated Balance Sheets.
[3]	Virginia Power’s Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.
[4]	Dominion Energy Gas’ Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.
[5]	At March 31, 2019, March 31, 2018, December 31, 2018 and December 31, 2017, Dominion Energy Gas had $4 million, $4 million, $9 million and $3 million of cash and cash equivalents included in current assets of discontinued operations, respectively.

Significant Accounting Polici_6

Significant Accounting Policies (Reconciliation of Total Cash, Restricted Cash and Equivalents (Parenthetical) (Detail) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Dominion Energy Gas Holdings, LLC
Cash Cash Equivalents And Restricted Cash [Line Items]
Cash And Cash Equivalent Discontinued Operation	$ 4	$ 9	$ 4	$ 3

Acquisitions and Dispositions_2

Acquisitions and Dispositions (Acquisition of SCANA) (Narrative) (Detail) - USD ($) $ in Millions	Sep. 16, 2016	Jan. 31, 2019	Oct. 31, 2017	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Business Acquisition And Dispositions [Line Items]
Stock issued during period for acquisition, value				$ 6,818
Regulatory Liabilities				11,411		$ 7,196
Regulatory liabilities-current				612		356	[1]
Net income				$ (680)	$ 503
Cove Point, DECG And Dominion Energy Questar Pipeline
Business Acquisition And Dispositions [Line Items]
Percentage Of Controlling Ownership				75.00%
Dominion Energy Gas Holdings, LLC | White River Hub
Business Acquisition And Dispositions [Line Items]
Minority Interest Ownership Percentage By Parent				50.00%
Dominion Energy Gas Holdings, LLC | Iroquois
Business Acquisition And Dispositions [Line Items]
Minority Interest Ownership Percentage By Parent				25.93%
Dominion Energy Gas Holdings, LLC | Cove Point
Business Acquisition And Dispositions [Line Items]
Minority Interest Ownership Percentage By Noncontrolling Owners				25.00%
SCANA
Business Acquisition And Dispositions [Line Items]
Stock issued during period for acquisition, shares		95,600,000
Stock issued during period for acquisition, value		$ 6,800
Common stock agreed to be issued, percentage		0.669%
Total outstanding debt		$ 6,900				13,083
Business combination, refund to customers		$ 2,000
Period to provide refund to customer		20 years	20 years	11 years
Regulatory Liabilities			$ 1,100	$ 1,000
Regulatory liabilities-current			67	137
Refund Liability to electric service customers			1,000
Reduction in operating revenue				(1,000)
Net income				$ (756)
Business combination cost related to exclusion from rate recovery		$ 2,400
Remaining regulatory asset		2,800				$ 3,940	[2]
Remaining regulatory asset current		138
Other Commitment, Fiscal Year Maturity [Abstract]
Charitable contributions, annual committed increase for next five years	$ 1
SCANA | Minimum
Other Commitment, Fiscal Year Maturity [Abstract]
Charitable contributions, period committed for annual increase	5 years
SCANA | Toshiba Corporation
Business Acquisition And Dispositions [Line Items]
Cash consideration			$ 1,100
SCANA | Columbia Energy
Business Acquisition And Dispositions [Line Items]
Business combination cost related to exclusion from rate recovery		$ 180
[1]	Dominion Energy’s Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.
[2]	Includes $264 million of certain income tax-related regulatory assets associated with the NND Project for which Dominion Energy committed to forgo recovery in accordance with the SCANA Merger Approval Order. See Note 5 for additional information.

Acquisitions and Dispositions_3

Acquisitions and Dispositions (Schedule of Preliminary Allocation of Purchase Price to Assets Acquired and Liabilities Assumed) (Detail) - USD ($) $ in Millions		Mar. 31, 2019	Jan. 31, 2019	Dec. 31, 2018
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]
Goodwill		$ 8,960		$ 6,410	[1]
SCANA
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]
Total current assets	[2]			1,772
Investments				224
Property, plant and equipment	[3]			11,006
Goodwill				2,550
Regulatory assets			$ 2,800	3,940	[4]
Other deferred charges and other assets, including intangible assets				430
Total Assets				19,922
Total current liabilities				1,515
Long-term debt				6,707
Deferred income taxes				1,100
Regulatory liabilities				2,662
Other deferred credits and other liabilities				1,099
Total Liabilities			$ 6,900	13,083
Total purchase price	[5]			$ 6,839
[1]	Dominion Energy’s Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.
[2]	Includes $389 million of cash, restricted cash and equivalents, of which $115 million is considered restricted.
[3]	Includes $105 million of certain property, plant and equipment associated with the NND Project for which Dominion Energy committed to forgo recovery in accordance with the SCANA Merger Approval Order. As a result, Dominion Energy’s Consolidated Statement of Income for the three months ended March 31, 2019 includes a charge of $105 million ($79 million after-tax), included in impairment of assets and other charges.
[4]	Includes $264 million of certain income tax-related regulatory assets associated with the NND Project for which Dominion Energy committed to forgo recovery in accordance with the SCANA Merger Approval Order. See Note 5 for additional information.
[5]	Includes stock-based compensation awards with an estimated fair value of $21 million.

Acquisitions and Dispositions_4

Acquisitions and Dispositions (Schedule of Preliminary Allocation of Purchase Price to Assets Acquired and Liabilities Assumed) (Parenthetical) (Detail) - USD ($) $ in Millions	Mar. 31, 2019	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Cash, restricted cash and equivalents	$ 627	$ 627	$ 334	$ 391	$ 185
Impairment of assets and other charges		835	$ 1
SCANA
Business Acquisition [Line Items]
Cash, restricted cash and equivalents	389	389
Restricted cash	115	115
Income tax regulatory assets	264	264
Stock based compensation awards estimated fair value	$ 21
SCANA | Dominion Energy
Business Acquisition [Line Items]
Property, plant and equipment with NND project		105
Impairment of assets and other charges		105
Asset impairment charges, after tax		$ 79

Acquisitions and Dispositions_5

Acquisitions and Dispositions (Results of Operations and Pro Forma Information) (Narrative) (Detail) - Dominion Energy Questar Corporation $ in Millions	3 Months Ended
	Mar. 31, 2019USD ($)
Business Acquisition [Line Items]
Increase in operating revenue	$ 170
Decrease in net income	1,100
Other operations and maintenance
Business Acquisition [Line Items]
Merger and integration related costs	115
Interest and related charges
Business Acquisition [Line Items]
Merger and integration related costs	$ 9

Acquisitions and Dispositions_6

Acquisitions and Dispositions (Schedule of Unaudited Pro Forma Information) (Detail) - Dominion Energy Questar Corporation - USD ($) $ / shares in Units, $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Business Acquisition [Line Items]
Operating Revenue	[1]	$ 4,887	$ 4,636
Net income attributable to Dominion Energy	[1]	$ 605	$ 675
Earnings Per Common Share – Basic	[1]	$ 0.76	$ 0.90
Earnings Per Common Share – Diluted	[1]	$ 0.76	$ 0.90
[1]	Amounts include adjustments for non-recurring costs directly related to the SCANA Combination.

Acquisitions and Dispositions_7

Acquisitions and Dispositions (Schedule Of Discontinued Operations Income Statement) (Detail) - Dominion Energy Gas Holdings, LLC - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Business Acquisition [Line Items]
Net income from discontinued operations		$ 54	$ 56
Current assets of discontinued operations		459		$ 444	[1]
Noncurrent assets of discontinued operations		5,969		5,849	[1]
Current liabilities of discontinued operations		1,097		1,273	[1]
Noncurrent liabilities of discontinued operations		3,181		2,896	[1]
East Ohio
Business Acquisition [Line Items]
Current assets of discontinued operations	[2]	440		423
Investments		2		2
Property, plant and equipment, net		3,710		3,669
Regulatory assets		740		711
Other deferred charges and other assets, including goodwill and intangible assets		1,321		1,275
Noncurrent assets of discontinued operations		5,773		5,657
Current liabilities of discontinued operations		1,086		1,262
Long-term debt		1,551		1,300
Deferred income taxes and investment tax credits		728		716
Regulatory liabilities		755		747
Other deferred credits and liabilities		117		108
Noncurrent liabilities of discontinued operations		3,151		2,871
DGP
Business Acquisition [Line Items]
Operating revenue		45	51
Depreciation and amortization		1	4
Other operating expenses		44	47
Net income from discontinued operations		0	0
Current assets of discontinued operations	[3]	19		21
Noncurrent assets of discontinued operations	[4]	196		192
Current liabilities of discontinued operations		11		11
Noncurrent liabilities of discontinued operations		30		$ 25
Discontinued Operations | East Ohio
Business Acquisition [Line Items]
Operating revenue		229	215
Depreciation and amortization		21	17
Other operating expenses		148	137
Other income		18	17
Interest and related charges		10	8
Income tax expense		14	14
Net income from discontinued operations		$ 54	$ 56
[1]	Dominion Energy Gas’ Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.
[2]	Includes cash and cash equivalents of $4 million and $9 million as of March 31, 2019 and December 31, 2018, respectively.
[3]	Includes cash and cash equivalents of less than a million dollars as of March 31, 2019 and December 31, 2018.
[4]	Primarily property, plant and equipment, net.

Acquisitions and Dispositions_8

Acquisitions and Dispositions (Schedule Of Discontinued Operations Income Statement) (Parenthetical) (Detail) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018		Mar. 31, 2018		Dec. 31, 2017
Business Acquisition [Line Items]
Cash and cash equivalents	$ 422	$ 268	[1]	$ 189		$ 120
Dominion Energy Gas Holdings, LLC
Business Acquisition [Line Items]
Cash and cash equivalents	143	99	[2]	$ 38	[3]	$ 18	[3]
East Ohio | Dominion Energy Gas Holdings, LLC
Business Acquisition [Line Items]
Cash and cash equivalents	$ 4	$ 9
[1]	Dominion Energy’s Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.
[2]	Dominion Energy Gas’ Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.
[3]	At March 31, 2019, March 31, 2018, December 31, 2018 and December 31, 2017, Dominion Energy Gas had $4 million, $4 million, $9 million and $3 million of cash and cash equivalents included in current assets of discontinued operations, respectively.

Acquisitions and Dispositions_9

Acquisitions and Dispositions (Schedule of Significant Non Cash Items and Capital Expenditure) (Detail) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Significant noncash items
Accrued capital expenditures	[1],[2],[3]	$ 201	$ 175
Dominion Energy Gas Holdings, LLC
Significant noncash items
Accrued capital expenditures	[2]	31	56
East Ohio | Dominion Energy Gas Holdings, LLC
Business Acquisition [Line Items]
Capital expenditures		65	58
Significant noncash items
Accrued capital expenditures		6	6
DGP | Dominion Energy Gas Holdings, LLC
Business Acquisition [Line Items]
Capital expenditures		$ 3	$ 1
[1]	See Note 16 for noncash financing activities related to the acquisition of the public interest in Dominion Energy Midstream.
[2]	See Note 2 for noncash investing and financing activities related to the adoption of a new accounting standard for leasing arrangements.
[3]	See Note 3 for noncash investing and financing activities related to the SCANA Combination.

Operating Revenue (Schedule of

Operating Revenue (Schedule of Operating Revenue) (Detail) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		$ 3,631	$ 3,324
Other revenues		227	142
Operating revenue	[1]	3,858	3,466
Regulated Electric Sales | Residential
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		646	817
Regulated Electric Sales | Commercial
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		496	524
Regulated Electric Sales | Industrial
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		30	107
Regulated Electric Sales | Government and Other Retail
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		200	213
Regulated Electric Sales | Wholesale
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		48	42
Nonregulated Electric Sales
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		316	418
Regulated Gas Sales | Residential
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		602	364
Regulated Gas Sales | Commercial
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		191	103
Regulated Gas Sales | Other
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		38	10
Nonregulated Gas Sales
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		247	88
Regulated Gas Transporation and Storage | FERC-regulated
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		277	262
Regulated Gas Transporation and Storage | State-regulated
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		213	190
Nonregulated Gas Transporation and Storage
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		174	0
Other Regulated Revenues
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers	[2]	58	50
Other Nonregulated Revenues
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers	[2],[3]	95	136
Virginia Electric and Power Company
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		1,951	1,748
Other revenues	[3],[4]	14	0
Operating revenue	[5]	1,965	1,748
Virginia Electric and Power Company | Regulated Electric Sales | Residential
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		923	817
Virginia Electric and Power Company | Regulated Electric Sales | Commercial
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		636	524
Virginia Electric and Power Company | Regulated Electric Sales | Industrial
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		112	107
Virginia Electric and Power Company | Regulated Electric Sales | Government and Other Retail
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		204	213
Virginia Electric and Power Company | Regulated Electric Sales | Wholesale
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		37	42
Virginia Electric and Power Company | Other Regulated Revenues
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		33	32
Virginia Electric and Power Company | Other Nonregulated Revenues
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers	[3]	6	13
Dominion Energy Gas Holdings, LLC
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		565	388
Other revenues		1	1
Operating revenue	[6]	566	389
Dominion Energy Gas Holdings, LLC | Regulated Gas Sales | Wholesale
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		2	5
Dominion Energy Gas Holdings, LLC | Nonregulated Gas Sales
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers	[3]	2	2
Dominion Energy Gas Holdings, LLC | Regulated Gas Transporation and Storage
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		340	314
Dominion Energy Gas Holdings, LLC | Nonregulated Gas Transporation and Storage
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers		174	0
Dominion Energy Gas Holdings, LLC | Management Service
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers	[3]	$ 44	$ 59
[1]	See Note 10 for amounts attributable to related parties.
[2]	Amounts above include $51 million for the three months ended March 31, 2019, and $30 million for the three months ended March 31, 2018 primarily consisting of NGL sales at Dominion Energy which are considered to be goods transferred at a point in time.
[3]	See Notes 10 and 19 for amounts attributable to related parties and affiliates.
[4]	Amounts above include $14 million and $8 million of alternative revenue at Dominion Energy and Virginia Power for the three months ended March 31, 2019, respectively.
[5]	See Note 19 for amounts attributable to affiliates.
[6]	See Note 19 for amounts attributable to related parties.

Operating Revenue (Schedule o_2

Operating Revenue (Schedule of Operating Revenue) (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers	$ 3,631	$ 3,324
Other revenues	227	142
NGL Midstream
Public Utilities General Disclosures [Line Items]
Operating revenue from contracts with customers	51	$ 30
Renewable Energy Investment Tax Credits
Public Utilities General Disclosures [Line Items]
Other revenues	14
Virginia Electric and Power Company
Public Utilities General Disclosures [Line Items]
Other revenues	$ 8

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	Mar. 31, 2019USD ($)
Revenues From Contract With Customer [Line Items]
Revenue, expected to be recognized on multi-year contracts	$ 20,254
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2019-01-01
Revenues From Contract With Customer [Line Items]
Revenue, expected to be recognized on multi-year contracts	$ 1,197
Revenue, expected to be recognized on multi-year contracts, period	9 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-01-01
Revenues From Contract With Customer [Line Items]
Revenue, expected to be recognized on multi-year contracts	$ 1,547
Revenue, expected to be recognized on multi-year contracts, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2021-01-01
Revenues From Contract With Customer [Line Items]
Revenue, expected to be recognized on multi-year contracts	$ 1,448
Revenue, expected to be recognized on multi-year contracts, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2022-01-01
Revenues From Contract With Customer [Line Items]
Revenue, expected to be recognized on multi-year contracts	$ 1,334
Revenue, expected to be recognized on multi-year contracts, period	1 year
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	$ 1,166
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	$ 13,562
Revenue, expected to be recognized on multi-year contracts, period
Virginia Electric and Power Company
Revenues From Contract With Customer [Line Items]
Revenue, expected to be recognized on multi-year contracts	$ 20
Virginia Electric and Power Company | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2019-01-01
Revenues From Contract With Customer [Line Items]
Revenue, expected to be recognized on multi-year contracts	$ 16
Revenue, expected to be recognized on multi-year contracts, period	9 months
Virginia Electric and Power Company | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-01-01
Revenues From Contract With Customer [Line Items]
Revenue, expected to be recognized on multi-year contracts	$ 3
Revenue, expected to be recognized on multi-year contracts, period	1 year
Virginia Electric and Power Company | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2021-01-01
Revenues From Contract With Customer [Line Items]
Revenue, expected to be recognized on multi-year contracts	$ 1
Revenue, expected to be recognized on multi-year contracts, period	1 year
Virginia Electric and Power Company | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2022-01-01
Revenues From Contract With Customer [Line Items]
Revenue, expected to be recognized on multi-year contracts	$ 0
Revenue, expected to be recognized on multi-year contracts, period	1 year
Virginia Electric and Power Company | 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	$ 0
Revenue, expected to be recognized on multi-year contracts, period	1 year
Virginia Electric and Power Company | 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	$ 0
Revenue, expected to be recognized on multi-year contracts, period
Dominion Energy Gas Holdings, LLC
Revenues From Contract With Customer [Line Items]
Revenue, expected to be recognized on multi-year contracts	$ 20,998
Dominion Energy Gas Holdings, LLC | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2019-01-01
Revenues From Contract With Customer [Line Items]
Revenue, expected to be recognized on multi-year contracts	$ 1,266
Revenue, expected to be recognized on multi-year contracts, period	9 months
Dominion Energy Gas Holdings, LLC | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-01-01
Revenues From Contract With Customer [Line Items]
Revenue, expected to be recognized on multi-year contracts	$ 1,657
Revenue, expected to be recognized on multi-year contracts, period	1 year
Dominion Energy Gas Holdings, LLC | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2021-01-01
Revenues From Contract With Customer [Line Items]
Revenue, expected to be recognized on multi-year contracts	$ 1,557
Revenue, expected to be recognized on multi-year contracts, period	1 year
Dominion Energy Gas Holdings, LLC | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2022-01-01
Revenues From Contract With Customer [Line Items]
Revenue, expected to be recognized on multi-year contracts	$ 1,422
Revenue, expected to be recognized on multi-year contracts, period	1 year
Dominion Energy Gas Holdings, LLC | 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	$ 1,231
Revenue, expected to be recognized on multi-year contracts, period	1 year
Dominion Energy Gas Holdings, LLC | 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	$ 13,865
Revenue, expected to be recognized on multi-year contracts, period

Operating Revenue (Narrative) (

Operating Revenue (Narrative) (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Revenues From Contract With Customer [Line Items]
Contract asset balances	$ 40	$ 42
Contract liability balances	77	106
Revenue recognized from contract liability balances	85
Dominion Energy Gas Holdings, LLC
Revenues From Contract With Customer [Line Items]
Contract asset balances	55	58
Contract liability balances	35	49
Revenue recognized from contract liability balances	25
Virginia Electric and Power Company
Revenues From Contract With Customer [Line Items]
Contract liability balances	21	$ 22
Revenue recognized from contract liability balances	$ 22

Income Taxes (Reconciliation of

Income Taxes (Reconciliation of Income Taxes at the U.S. Statutory Federal Income Tax Rate) (Detail)		3 Months Ended		12 Months Ended
		Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2017
Effective Income Tax Computation [Line Items]
U.S. statutory rate		21.00%	21.00%	35.00%
Increases (reductions) resulting from:
State taxes, net of federal benefit		2.20%	4.10%
Investment tax credits		(1.50%)	(0.50%)
Production tax credits		(0.80%)	(0.60%)
Reversal of excess deferred income taxes		(5.10%)	(1.40%)
Write-off of regulatory assets		(34.10%)
Other, net		(2.00%)	(2.10%)
Effective tax rate		(20.30%)	20.50%
Virginia Electric and Power Company
Effective Income Tax Computation [Line Items]
U.S. statutory rate		21.00%	21.00%
Increases (reductions) resulting from:
State taxes, net of federal benefit		4.60%	4.50%
Investment tax credits		(3.20%)	(0.90%)
Production tax credits		(1.00%)	(0.70%)
Reversal of excess deferred income taxes		(5.00%)	(2.00%)
Other, net		0.10%	(0.30%)
Effective tax rate		16.50%	21.60%
Dominion Energy Gas Holdings, LLC
Effective Income Tax Computation [Line Items]
U.S. statutory rate		21.00%	21.00%
Increases (reductions) resulting from:
State taxes, net of federal benefit		3.40%	5.50%
Reversal of excess deferred income taxes		(0.70%)	(0.80%)
Other, net	[1]	(3.80%)	(4.00%)
Effective tax rate		19.90%	21.70%
[1]	Includes (3.6) % relating to the absence of tax on noncontrolling interest in both 2019 and 2018.

Income Taxes (Reconciliation _2

Income Taxes (Reconciliation of Income Taxes at the U.S. Statutory Federal Income Tax Rate) (Parenthetical) (Detail)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Tax Percentage on noncontrolling interest	(3.60%)	(3.60%)

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Detail) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2017
Effective Income Tax Computation [Line Items]
Federal statutory income tax rate	21.00%	21.00%	35.00%
Percentage of deductibility of interest expense	30.00%
SCANA
Effective Income Tax Computation [Line Items]
Deferred income tax expense	$ 198
Increase in unrecognized tax benefits	51
Increase in goodwill	40
Unrecognized Tax Benefits,	$ 106

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
	Mar. 31, 2019	Mar. 31, 2018
Earnings Per Share [Abstract]
Net income (loss) attributable to Dominion Energy	$ (680)	$ 503
Average shares of common stock outstanding – Basic	793.1	650.5
Average shares of common stock outstanding – Diluted	793.1	650.5
Earnings Per Common Share – Basic	$ (0.86)	$ 0.77
Earnings Per Common Share – Diluted	$ (0.86)	$ 0.77

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Schedule of Changes in AOCI by Component Net of Tax) (Detail) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019		Mar. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	[1]	$ 20,107
Ending balance		26,909
Virginia Electric and Power Company
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance		13,047	[2]	$ 12,224
Ending balance		12,944		12,262
Dominion Energy Gas Holdings, LLC
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	[3]	6,201
Ending balance		7,429
Deferred Gains and Losses on Derivatives-Hedging Activities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance		(235)		(302)
Other comprehensive income before reclassifications: gains (losses)		(24)		111
Amounts reclassified from AOCI: (gains) losses	[4]	(31)		8
Net current period other comprehensive income (loss)		(55)		119
Cumulative-effect of changes in accounting principle				(64)
Less other comprehensive income attributable to noncontrolling interest				1
Ending balance		(290)		(248)
Deferred Gains and Losses on Derivatives-Hedging Activities | Virginia Electric and Power Company
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance		(13)		(12)
Other comprehensive income before reclassifications: gains (losses)		(7)		5
Net current period other comprehensive income (loss)		(7)		5
Cumulative-effect of changes in accounting principle				(3)
Ending balance		(20)		(10)
Deferred Gains and Losses on Derivatives-Hedging Activities | Dominion Energy Gas Holdings, LLC
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance		(25)		(23)
Other comprehensive income before reclassifications: gains (losses)		(27)		13
Amounts reclassified from AOCI: (gains) losses	[4]	3		(2)
Net current period other comprehensive income (loss)		(24)		11
Cumulative-effect of changes in accounting principle				(5)
Less other comprehensive income attributable to noncontrolling interest		(1)		1
Ending balance		(48)		(16)
Unrealized Gains and Losses on Investment Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance		2		747
Other comprehensive income before reclassifications: gains (losses)		16		(13)
Amounts reclassified from AOCI: (gains) losses	[4]			1
Net current period other comprehensive income (loss)		16		(12)
Cumulative-effect of changes in accounting principle				(732)
Ending balance		18		3
Unrealized Gains and Losses on Investment Securities | Virginia Electric and Power Company
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance		1		74
Other comprehensive income before reclassifications: gains (losses)		2
Net current period other comprehensive income (loss)		2
Cumulative-effect of changes in accounting principle				(73)
Ending balance		3		1
Unrecognized Pension and Other Postretirement Benefit Costs
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance		(1,465)		(1,101)
Amounts reclassified from AOCI: (gains) losses	[4]	8		25
Net current period other comprehensive income (loss)		8		25
Cumulative-effect of changes in accounting principle				(227)
Ending balance		(1,457)		(1,303)
Unrecognized Pension and Other Postretirement Benefit Costs | Dominion Energy Gas Holdings, LLC
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance		(144)		(75)
Amounts reclassified from AOCI: (gains) losses	[4]	1		1
Net current period other comprehensive income (loss)		1		1
Cumulative-effect of changes in accounting principle				(21)
Ending balance		(143)		(95)
Other Comprehensive Loss From Equity Method Investee
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance		(2)		(3)
Ending balance		(2)		(3)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance		(1,700)		(659)
Other comprehensive income before reclassifications: gains (losses)		(8)		98
Amounts reclassified from AOCI: (gains) losses	[4]	(23)		34
Net current period other comprehensive income (loss)		(31)		132
Cumulative-effect of changes in accounting principle				(1,023)
Less other comprehensive income attributable to noncontrolling interest				1
Ending balance		(1,731)		(1,551)
Accumulated Other Comprehensive Income (Loss) | Virginia Electric and Power Company
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance		(12)		62
Other comprehensive income before reclassifications: gains (losses)		(5)		5
Net current period other comprehensive income (loss)		(5)		5
Cumulative-effect of changes in accounting principle				(76)
Ending balance		(17)		(9)
Accumulated Other Comprehensive Income (Loss) | Dominion Energy Gas Holdings, LLC
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance		(169)		(98)
Other comprehensive income before reclassifications: gains (losses)		(27)		13
Amounts reclassified from AOCI: (gains) losses	[4]	4		(1)
Net current period other comprehensive income (loss)		(23)		12
Cumulative-effect of changes in accounting principle				(26)
Less other comprehensive income attributable to noncontrolling interest		(1)		1
Ending balance		$ (191)		$ (113)
[1]	Dominion Energy’s Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.
[2]	Virginia Power’s Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.
[3]	Dominion Energy Gas’ Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.
[4]	See table below for details about these reclassifications.

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Income (Schedule of Reclassifications out of AOCI by Component Net of Tax) (Detail) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Operating revenue	[1]	$ (3,858)	$ (3,466)
Purchased gas		730	340
Interest and related charges		469	314
Other income		(388)	(100)
Income from operations before income tax expense		563	(661)
Income tax expense		114	135
Electric fuel and other energy-related purchases		791	744
Dominion Energy Gas Holdings, LLC
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net Income from discontinued operations		54	56
Operating revenue	[2]	(566)	(389)
Purchased gas	[2]	12	14
Interest and related charges	[2]	87	4
Other income		(42)	(17)
Income from operations before income tax expense		(215)	(200)
Income tax expense		43	43
Income (loss) including noncontrolling interests, net of tax		(172)	(157)
Deferred (gains) and losses on derivatives-hedging activities: | Amounts Reclassified From AOCI
Accumulated Other Comprehensive Income (Loss) [Line Items]
Income from operations before income tax expense		(41)	11
Income tax expense		10	(3)
Income (loss) including noncontrolling interests, net of tax		(31)	8
Deferred (gains) and losses on derivatives-hedging activities: | Amounts Reclassified From AOCI | Dominion Energy Gas Holdings, LLC
Accumulated Other Comprehensive Income (Loss) [Line Items]
Income from operations before income tax expense		3	(3)
Income tax expense			1
Income (loss) including noncontrolling interests, net of tax		3	(2)
Deferred (gains) and losses on derivatives-hedging activities: | Amounts Reclassified From AOCI | Commodity contracts
Accumulated Other Comprehensive Income (Loss) [Line Items]
Operating revenue		(54)	12
Purchased gas		(3)	2
Electric fuel and other energy-related purchases			(7)
Deferred (gains) and losses on derivatives-hedging activities: | Amounts Reclassified From AOCI | Commodity contracts | Dominion Energy Gas Holdings, LLC
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net Income from discontinued operations		(2)	3
Deferred (gains) and losses on derivatives-hedging activities: | Amounts Reclassified From AOCI | Interest rate contracts
Accumulated Other Comprehensive Income (Loss) [Line Items]
Interest and related charges		10	12
Deferred (gains) and losses on derivatives-hedging activities: | Amounts Reclassified From AOCI | Interest rate contracts | Dominion Energy Gas Holdings, LLC
Accumulated Other Comprehensive Income (Loss) [Line Items]
Interest and related charges		(1)	2
Deferred (gains) and losses on derivatives-hedging activities: | Amounts Reclassified From AOCI | Foreign currency
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other income		6	(8)
Deferred (gains) and losses on derivatives-hedging activities: | Amounts Reclassified From AOCI | Foreign currency | Dominion Energy Gas Holdings, LLC
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other income		6	(8)
Unrealized (gains) and losses on investment securities: | Amounts Reclassified From AOCI
Accumulated Other Comprehensive Income (Loss) [Line Items]
Income from operations before income tax expense			1
Income (loss) including noncontrolling interests, net of tax			1
Realized (gain) loss on sale of securities			1
Amortization of prior-service costs (credits) | Amounts Reclassified From AOCI
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other income		(5)	(5)
Unrecognized pension and other postretirement benefit costs:
Accumulated Other Comprehensive Income (Loss) [Line Items]
Unrecognized pension and other postretirement benefit costs, before tax		22	26
Unrecognized pension and other postretirement benefit costs, income tax expense		(14)	(1)
Unrecognized pension and other postretirement benefit costs, net of tax		8	25
Unrecognized pension and other postretirement benefit costs: | Dominion Energy Gas Holdings, LLC
Accumulated Other Comprehensive Income (Loss) [Line Items]
Unrecognized pension and other postretirement benefit costs, before tax		2	2
Unrecognized pension and other postretirement benefit costs, income tax expense		(1)	(1)
Unrecognized pension and other postretirement benefit costs, net of tax		1	1
Unrecognized pension and other postretirement benefit costs: | Amounts Reclassified From AOCI | Dominion Energy Gas Holdings, LLC
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other income		2	2
Amortization of actuarial losses | Amounts Reclassified From AOCI
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other income		$ 27	$ 31
[1]	See Note 10 for amounts attributable to related parties.
[2]	See Note 19 for amounts attributable to related parties.

Fair Value Measurements (Fair V

Fair Value Measurements (Fair Value, Option, Quantitative Disclosures) (Detail) $ in Millions		3 Months Ended
		Mar. 31, 2019USD ($)$ / MMBTU$ / MWh	Dec. 31, 2018USD ($)
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Assets		$ 173	$ 294
Fair Value of Derivative Liabilities		369	279
Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Assets		66	93
Fair Value of Derivative Liabilities		190	103
Fair Value, Measurements, Recurring
Fair Value, Option, Quantitative Disclosures [Line Items]
Total assets		5,488	5,156
Total liabilities		369	279
Fair Value, Measurements, Recurring | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Total assets		2,502	2,297
Total liabilities		190	103
Fair Value, Measurements, Recurring | Commodity
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Assets		157	250
Fair Value of Derivative Liabilities		45	135
Fair Value, Measurements, Recurring | Commodity | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Assets		66	90
Fair Value of Derivative Liabilities		9	15
Fair Value, Measurements, Recurring | Level 3
Fair Value, Option, Quantitative Disclosures [Line Items]
Total assets		63	70
Total liabilities		10	6
Fair Value, Measurements, Recurring | Level 3 | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Total assets		62	66
Total liabilities		3	6
Fair Value, Measurements, Recurring | Level 3 | Commodity
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Assets		63	70
Fair Value of Derivative Liabilities		10	6
Fair Value, Measurements, Recurring | Level 3 | Commodity | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Assets		62	66
Fair Value of Derivative Liabilities		$ 3	$ 6
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow [Member] | Commodity | Minimum | Derivative Financial Instruments, Liabilities | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[1]	(1)
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow [Member] | Commodity | Maximum [Member] | Derivative Financial Instruments, Liabilities | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[1]	2
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow [Member] | FTRs [Member] | Commodity
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Assets		$ 2
Fair Value of Derivative Liabilities		3
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow [Member] | FTRs [Member] | Commodity | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Assets		2
Fair Value of Derivative Liabilities		$ 3
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow [Member] | FTRs [Member] | Commodity | Minimum | Derivative Financial Instruments, Liabilities
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[1]	(1)
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow [Member] | FTRs [Member] | Commodity | Minimum | Derivative Financial Instruments, Liabilities | Market Price [Member] | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[1]	(1)
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow [Member] | FTRs [Member] | Commodity | Minimum | Assets | Market Price [Member] | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[1]	(1)
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow [Member] | FTRs [Member] | Commodity | Maximum [Member] | Derivative Financial Instruments, Liabilities
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[1]	2
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow [Member] | FTRs [Member] | Commodity | Maximum [Member] | Derivative Financial Instruments, Liabilities | Market Price [Member] | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[1]	2
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow [Member] | FTRs [Member] | Commodity | Maximum [Member] | Assets | Market Price [Member] | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[1]	2
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow [Member] | FTRs [Member] | Commodity | Weighted Average | Derivative Financial Instruments, Liabilities
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[1],[2]	1
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow [Member] | FTRs [Member] | Commodity | Weighted Average | Derivative Financial Instruments, Liabilities | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[1],[2]	1
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow [Member] | FTRs [Member] | Commodity | Weighted Average | Assets | Market Price [Member] | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MWh	[1],[2]	0
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow [Member] | Natural Gas | Commodity
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Assets	[3]	$ 60
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow [Member] | Natural Gas | Commodity | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Assets	[3]	$ 59
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow [Member] | Natural Gas | Commodity | Minimum | Assets | Market Price [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[1]	(2)
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow [Member] | Natural Gas | Commodity | Minimum | Assets | Market Price [Member] | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[1]	(2)
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow [Member] | Natural Gas | Commodity | Maximum [Member] | Assets | Market Price [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[1]	7
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow [Member] | Natural Gas | Commodity | Maximum [Member] | Assets | Market Price [Member] | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[1]	7
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow [Member] | Natural Gas | Commodity | Weighted Average | Assets | Market Price [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[1],[2]	(1)
Fair Value, Measurements, Recurring | Level 3 | Discounted Cash Flow [Member] | Natural Gas | Commodity | Weighted Average | Assets | Market Price [Member] | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[1],[2]	(1)
Fair Value, Measurements, Recurring | Level 3 | Option Model [Member] | Natural Gas | Physical Options [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Assets		$ 1
Fair Value of Derivative Liabilities		7
Fair Value, Measurements, Recurring | Level 3 | Option Model [Member] | Natural Gas | Physical Options [Member] | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value of Derivative Assets		$ 1
Fair Value, Measurements, Recurring | Level 3 | Option Model [Member] | Natural Gas | Physical Options [Member] | Minimum | Derivative Financial Instruments, Liabilities | Market Price [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[1]	2
Fair Value, Measurements, Recurring | Level 3 | Option Model [Member] | Natural Gas | Physical Options [Member] | Minimum | Derivative Financial Instruments, Liabilities | Price Volatility [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Price volatility (percentage)	[4]	23.00%
Fair Value, Measurements, Recurring | Level 3 | Option Model [Member] | Natural Gas | Physical Options [Member] | Minimum | Assets | Market Price [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[1]	2
Fair Value, Measurements, Recurring | Level 3 | Option Model [Member] | Natural Gas | Physical Options [Member] | Minimum | Assets | Market Price [Member] | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[1]	2
Fair Value, Measurements, Recurring | Level 3 | Option Model [Member] | Natural Gas | Physical Options [Member] | Minimum | Assets | Price Volatility [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Price volatility (percentage)	[4]	10.00%
Fair Value, Measurements, Recurring | Level 3 | Option Model [Member] | Natural Gas | Physical Options [Member] | Minimum | Assets | Price Volatility [Member] | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Price volatility (percentage)	[4]	10.00%
Fair Value, Measurements, Recurring | Level 3 | Option Model [Member] | Natural Gas | Physical Options [Member] | Maximum [Member] | Derivative Financial Instruments, Liabilities | Market Price [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[1]	16
Fair Value, Measurements, Recurring | Level 3 | Option Model [Member] | Natural Gas | Physical Options [Member] | Maximum [Member] | Derivative Financial Instruments, Liabilities | Price Volatility [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Price volatility (percentage)	[4]	492.00%
Fair Value, Measurements, Recurring | Level 3 | Option Model [Member] | Natural Gas | Physical Options [Member] | Maximum [Member] | Assets | Market Price [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[1]	7
Fair Value, Measurements, Recurring | Level 3 | Option Model [Member] | Natural Gas | Physical Options [Member] | Maximum [Member] | Assets | Market Price [Member] | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[1]	7
Fair Value, Measurements, Recurring | Level 3 | Option Model [Member] | Natural Gas | Physical Options [Member] | Maximum [Member] | Assets | Price Volatility [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Price volatility (percentage)	[4]	492.00%
Fair Value, Measurements, Recurring | Level 3 | Option Model [Member] | Natural Gas | Physical Options [Member] | Maximum [Member] | Assets | Price Volatility [Member] | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Price volatility (percentage)	[4]	491.00%
Fair Value, Measurements, Recurring | Level 3 | Option Model [Member] | Natural Gas | Physical Options [Member] | Weighted Average | Derivative Financial Instruments, Liabilities | Market Price [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[1],[2]	5
Fair Value, Measurements, Recurring | Level 3 | Option Model [Member] | Natural Gas | Physical Options [Member] | Weighted Average | Derivative Financial Instruments, Liabilities | Price Volatility [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Price volatility (percentage)	[2],[4]	82.00%
Fair Value, Measurements, Recurring | Level 3 | Option Model [Member] | Natural Gas | Physical Options [Member] | Weighted Average | Assets | Market Price [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[1],[2]	3
Fair Value, Measurements, Recurring | Level 3 | Option Model [Member] | Natural Gas | Physical Options [Member] | Weighted Average | Assets | Market Price [Member] | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Market Price | $ / MMBTU	[1],[2]	2
Fair Value, Measurements, Recurring | Level 3 | Option Model [Member] | Natural Gas | Physical Options [Member] | Weighted Average | Assets | Price Volatility [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Price volatility (percentage)	[2],[4]	66.00%
Fair Value, Measurements, Recurring | Level 3 | Option Model [Member] | Natural Gas | Physical Options [Member] | Weighted Average | Assets | Price Volatility [Member] | Virginia Electric and Power Company
Fair Value, Option, Quantitative Disclosures [Line Items]
Price volatility (percentage)	[2],[4]	54.00%
[1]	Represents market prices beyond defined terms for Levels 1 and 2.
[2]	Averages weighted by volume.
[3]	Includes basis.
[4]	Represents volatilities unrepresented in published markets.

Fair Value Measurements (Assets

Fair Value Measurements (Assets and Liabilities that are Measured at Fair Value on a Recurring Basis) (Detail) - USD ($) $ in Millions		Mar. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset		$ 173	$ 294
Derivative Liabilities		369	279
Virginia Electric and Power Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset		66	93
Derivative Liabilities		190	103
Dominion Energy Gas Holdings, LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset		13	31
Derivative Liabilities		42	19
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets		5,488	5,156
Total Liabilities		369	279
Fair Value, Measurements, Recurring | Virginia Electric and Power Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets		2,502	2,297
Total Liabilities		190	103
Fair Value, Measurements, Recurring | Dominion Energy Gas Holdings, LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets		13	31
Total Liabilities		42	19
Fair Value, Measurements, Recurring | Equity securities: | U.S.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	[1]	3,688	3,277
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]	1,683	1,476
Fair Value, Measurements, Recurring | Fixed Income | Corporate debt instruments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	[1]	470	431
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]	233	221
Fair Value, Measurements, Recurring | Fixed Income | Government Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	[1]	1,146	1,143
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]	520	507
Fair Value, Measurements, Recurring | Cash equivalents and other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	[1]	11	11
Fair Value, Measurements, Recurring | Commodity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset		157	250
Derivative Liabilities		45	135
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		66	90
Derivative Liabilities		9	15
Fair Value, Measurements, Recurring | Commodity | Dominion Energy Gas Holdings, LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset			3
Fair Value, Measurements, Recurring | Interest rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset		3	18
Derivative Liabilities		323	142
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			3
Derivative Liabilities		181	88
Fair Value, Measurements, Recurring | Interest rate | Dominion Energy Gas Holdings, LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset			2
Derivative Liabilities		41	17
Fair Value, Measurements, Recurring | Foreign currency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset		13	26
Derivative Liabilities		1	2
Fair Value, Measurements, Recurring | Foreign currency | Dominion Energy Gas Holdings, LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset		13	26
Derivative Liabilities		1	2
Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets		4,169	3,743
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		1,875	1,640
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]	3,688	3,277
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]	1,683	1,476
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]	468	455
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]	192	164
Fair Value, Measurements, Recurring | Level 1 | Cash equivalents and other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	[1]	11	11
Fair Value, Measurements, Recurring | Level 1 | Commodity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset		2
Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets		1,256	1,343
Total Liabilities		359	273
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		565	591
Total Liabilities		187	97
Fair Value, Measurements, Recurring | Level 2 | Dominion Energy Gas Holdings, LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets		13	31
Total Liabilities		42	19
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]	470	431
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]	233	221
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]	678	688
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]	328	343
Fair Value, Measurements, Recurring | Level 2 | Commodity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset		92	180
Derivative Liabilities		35	129
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		4	24
Derivative Liabilities		6	9
Fair Value, Measurements, Recurring | Level 2 | Commodity | Dominion Energy Gas Holdings, LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset			3
Fair Value, Measurements, Recurring | Level 2 | Interest rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset		3	18
Derivative Liabilities		323	142
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			3
Derivative Liabilities		181	88
Fair Value, Measurements, Recurring | Level 2 | Interest rate | Dominion Energy Gas Holdings, LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset			2
Derivative Liabilities		41	17
Fair Value, Measurements, Recurring | Level 2 | Foreign currency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset		13	26
Derivative Liabilities		1	2
Fair Value, Measurements, Recurring | Level 2 | Foreign currency | Dominion Energy Gas Holdings, LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset		13	26
Derivative Liabilities		1	2
Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets		63	70
Total Liabilities		10	6
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		62	66
Total Liabilities		3	6
Fair Value, Measurements, Recurring | Level 3 | Commodity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset		63	70
Derivative Liabilities		10	6
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		62	66
Derivative Liabilities		$ 3	$ 6
[1]	Includes investments held in the nuclear decommissioning and rabbi trusts. Excludes $213 million and $220 million of assets at March 31, 2019 and December 31, 2018, 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 $160 million of assets at March 31, 2019 and December 31, 2018, 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	Mar. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value using NAV	$ 213	$ 220
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	$ 160

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
	Mar. 31, 2019	Mar. 31, 2018
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning balance	$ 64	$ 150
Total realized and unrealized gains (losses):
Included in other comprehensive income		1
Included in regulatory assets/liabilities	7	(21)
Settlements	(1)	7
Purchases	(10)
Transfers out of Level 3	(2)	1
Ending balance	53	120
Virginia Electric and Power Company
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning balance	60	147
Total realized and unrealized gains (losses):
Included in regulatory assets/liabilities	8	(19)
Settlements	(5)	6
Ending balance	59	117
Dominion Energy Gas Holdings, LLC
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning balance		(2)
Total realized and unrealized gains (losses):
Included in other comprehensive income		1
Transfers out of Level 3		1
Ending balance		0
Operating Revenue
Total realized and unrealized gains (losses):
Included in earnings	(1)	(1)
Electric Fuel and Other Energy-Related Purchases
Total realized and unrealized gains (losses):
Included in earnings	(4)	(17)
Electric Fuel and Other Energy-Related Purchases | Virginia Electric and Power Company
Total realized and unrealized gains (losses):
Included in earnings	$ (4)	$ (17)

Fair Value Measurements (Narrat

Fair Value Measurements (Narrative) (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Virginia Electric and Power Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unrealized gains or losses included in earnings in Level 3 fair value category	$ 0	$ 0
Dominion Energy Gas Holdings, LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unrealized gains or losses included in earnings in Level 3 fair value category	0	$ 0
Dominion Energy Gas Holdings, LLC | Commodity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net changes in assets and liabilities measured at fair value on recurring basis	$ 0

Fair Value Measurements (Financ

Fair Value Measurements (Financial Instruments' Carrying Amounts and Fair Values) (Detail) - USD ($) $ in Millions		Mar. 31, 2019	Dec. 31, 2018
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including securities due within one year	[1]	$ 35,123	$ 29,952
Credit facility borrowings			73
Junior subordinated notes	[2]	3,431	3,430
Remarketable subordinated notes	[2]	1,387	1,386
Estimate of Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including securities due within one year	[1],[3]	37,531	31,045
Credit facility borrowings			73
Junior subordinated notes	[2],[3]	3,471	3,358
Remarketable subordinated notes	[2],[3]	1,398	1,340
Virginia Electric and Power Company | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including securities due within one year	[2]	11,680	11,671
Virginia Electric and Power Company | Estimate of Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including securities due within one year	[2],[3]	12,782	12,400
Dominion Energy Gas Holdings, LLC | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including securities due within one year	[4]	7,473	7,770
Affiliated long-term debt		395
Credit facility borrowings			73
Dominion Energy Gas Holdings, LLC | Estimate of Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including securities due within one year	[3],[4]	7,586	7,803
Affiliated long-term debt	[3]	$ 395
Credit facility borrowings			$ 73
[1]	Carrying amount includes amounts which represent the unamortized debt issuance costs, discount or premium, and foreign currency remeasurement adjustments. At March 31, 2019 and December 31, 2018, includes the valuation of certain fair value hedges associated with fixed rate debt of $(11) million and $(20) million, respectively.
[2]	Carrying amount includes 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 issues with short-term maturities and variable rates refinanced at current market rates is a reasonable estimate of their fair value.
[4]	Carrying amount includes amounts which represent the unamortized debt issuance costs, discount or premium, and foreign currency remeasurement adjustments.

Fair Value Measurements (Fina_2

Fair Value Measurements (Financial Instruments' Carrying Amounts and Fair Values) (Parenthetical) (Detail) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Valuation of certain fair value hedges associated with fixed rate debt	$ (11)	$ (20)

Derivatives and Hedge Account_3

Derivatives and Hedge Accounting Activities (Schedule of Offsetting Assets) (Detail) - USD ($) $ in Millions		Mar. 31, 2019	Dec. 31, 2018
Offsetting Assets [Line Items]
Gross Assets Presented in the Consolidated Balance Sheet	[1]	$ 171	$ 287
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		38	83
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Received		0	0
Net Amounts		133	204
Virginia Electric and Power Company
Offsetting Assets [Line Items]
Gross Assets Presented in the Consolidated Balance Sheet	[2]	61	67
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		2	6
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Received		0	0
Net Amounts		59	61
Dominion Energy Gas Holdings, LLC
Offsetting Assets [Line Items]
Gross Assets Presented in the Consolidated Balance Sheet		13	31
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		7	2
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Received		0	0
Net Amounts		6	29
Commodity | Over-the-counter
Offsetting Assets [Line Items]
Gross Assets Presented in the Consolidated Balance Sheet		77	175	[1]
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		5	12
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Received		0	0
Net Amounts		72	163
Commodity | Exchange
Offsetting Assets [Line Items]
Gross Assets Presented in the Consolidated Balance Sheet		78	68	[1]
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		26	68
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Received		0	0
Net Amounts		52	0
Commodity | Virginia Electric and Power Company | Over-the-counter
Offsetting Assets [Line Items]
Gross Assets Presented in the Consolidated Balance Sheet	[2]	61	64
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		2	6
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Received		0	0
Net Amounts		59	58
Commodity | Dominion Energy Gas Holdings, LLC | Over-the-counter
Offsetting Assets [Line Items]
Gross Assets Presented in the Consolidated Balance Sheet		0	3
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		0
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Received		0	0
Net Amounts		0	3
Interest rate | Over-the-counter
Offsetting Assets [Line Items]
Gross Assets Presented in the Consolidated Balance Sheet		3	18	[1]
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		0	1
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Received		0	0
Net Amounts		3	17
Interest rate | Virginia Electric and Power Company | Over-the-counter
Offsetting Assets [Line Items]
Gross Assets Presented in the Consolidated Balance Sheet	[2]	0	3
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		0
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Received		0	0
Net Amounts		0	3
Interest rate | Dominion Energy Gas Holdings, LLC | Over-the-counter
Offsetting Assets [Line Items]
Gross Assets Presented in the Consolidated Balance Sheet		0	2
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		0	0
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Received		0	0
Net Amounts		0	2
Foreign currency | Over-the-counter
Offsetting Assets [Line Items]
Gross Assets Presented in the Consolidated Balance Sheet		13	26	[1]
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		7	2
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Received		0	0
Net Amounts		6	24
Foreign currency | Dominion Energy Gas Holdings, LLC | Over-the-counter
Offsetting Assets [Line Items]
Gross Assets Presented in the Consolidated Balance Sheet		13	26
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		7	2
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Received		0	0
Net Amounts		$ 6	$ 24
[1]	Excludes $2 million and $7 million of derivative assets at March 31, 2019 and December 31, 2018, respectively, which are not subject to master netting or similar arrangements.
[2]	Excludes $5 million and $26 million of derivative assets at March 31, 2019 and December 31, 2018, respectively, which are not subject to master netting or similar arrangements.

Derivatives and Hedge Account_4

Derivatives and Hedge Accounting Activities (Schedule of Offsetting Assets) (Parenthetical) (Detail) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Offsetting Assets [Line Items]
Derivative assets, not subject to a master netting or similar arrangement	$ 2	$ 7
Virginia Electric and Power Company
Offsetting Assets [Line Items]
Derivative assets, not subject to a master netting or similar arrangement	$ 5	$ 26

Derivatives and Hedge Account_5

Derivatives and Hedge Accounting Activities (Schedule of Offsetting Liabilities) (Detail) - USD ($) $ in Millions		Mar. 31, 2019	Dec. 31, 2018
Offsetting Liabilities [Line Items]
Gross Liabilities Presented in the Consolidated Balance Sheet	[1]	$ 369	$ 278
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		38	83
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral		1	47
Net Amounts		330	148
Virginia Electric and Power Company
Offsetting Liabilities [Line Items]
Gross Liabilities Presented in the Consolidated Balance Sheet	[2]	184	94
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		2	6
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral		1
Net Amounts		181	88
Dominion Energy Gas Holdings, LLC
Offsetting Liabilities [Line Items]
Gross Liabilities Presented in the Consolidated Balance Sheet		42	19
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		7	2
Net Amounts		35	17
Commodity | Over-the-counter
Offsetting Liabilities [Line Items]
Gross Liabilities Presented in the Consolidated Balance Sheet		19	19	[1]
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		5	12
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral		1
Net Amounts		13	7
Commodity | Exchange
Offsetting Liabilities [Line Items]
Gross Liabilities Presented in the Consolidated Balance Sheet		26	115	[1]
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		26	68
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral			47
Commodity | Virginia Electric and Power Company | Over-the-counter
Offsetting Liabilities [Line Items]
Gross Liabilities Presented in the Consolidated Balance Sheet	[2]	3	6
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		2	6
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral		1
Interest rate | Over-the-counter
Offsetting Liabilities [Line Items]
Gross Liabilities Presented in the Consolidated Balance Sheet		323	142	[1]
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		6	1
Net Amounts		317	141
Interest rate | Virginia Electric and Power Company | Over-the-counter
Offsetting Liabilities [Line Items]
Gross Liabilities Presented in the Consolidated Balance Sheet	[2]	181	88
Net Amounts		181	88
Interest rate | Dominion Energy Gas Holdings, LLC | Over-the-counter
Offsetting Liabilities [Line Items]
Gross Liabilities Presented in the Consolidated Balance Sheet		41	17
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		6
Net Amounts		35	17
Foreign currency | Over-the-counter
Offsetting Liabilities [Line Items]
Gross Liabilities Presented in the Consolidated Balance Sheet		1	2	[1]
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		1	2
Foreign currency | Dominion Energy Gas Holdings, LLC | Over-the-counter
Offsetting Liabilities [Line Items]
Gross Liabilities Presented in the Consolidated Balance Sheet		1	2
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments		$ 1	$ 2
[1]	Excludes $— million and $1 million of derivative liabilities at March 31, 2019 and December 31, 2018, respectively, which are not subject to master netting or similar arrangements.
[2]	Excludes $6 million and $9 million of derivative liabilities at March 31, 2019 and December 31, 2018, respectively, which are not subject to master netting or similar arrangements.

Derivatives and Hedge Account_6

Derivatives and Hedge Accounting Activities (Schedule of Offsetting Liabilities) (Parenthetical) (Detail) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Offsetting Liabilities [Line Items]
Derivative liabilities, not subject to a master netting or similar arrangement		$ 1
Virginia Electric and Power Company
Offsetting Liabilities [Line Items]
Derivative liabilities, not subject to a master netting or similar arrangement	$ 6	$ 9

Derivatives and Hedge Account_7

Derivatives and Hedge Accounting Activities (Volume of Derivative Activity) (Detail)	3 Months Ended
	Mar. 31, 2019USD ($)MWhBcfgal
Fixed Price - Natural Gas - Current Derivative Contract
Derivative [Line Items]
Volume of derivative activity | Bcf	78
Fixed Price - Natural Gas - Current Derivative Contract | Virginia Electric and Power Company
Derivative [Line Items]
Volume of derivative activity | Bcf	20	[1]
Fixed Price - Natural Gas - Non-current Derivative Contract
Derivative [Line Items]
Volume of derivative activity | Bcf	61
Fixed Price - Natural Gas - Non-current Derivative Contract | Virginia Electric and Power Company
Derivative [Line Items]
Volume of derivative activity | Bcf	26	[1]
Basis - Natural Gas - Current Derivative Contract
Derivative [Line Items]
Volume of derivative activity | Bcf	277
Basis - Natural Gas - Current Derivative Contract | Virginia Electric and Power Company
Derivative [Line Items]
Volume of derivative activity | Bcf	182
Basis - Natural Gas - Non-current Derivative Contract
Derivative [Line Items]
Volume of derivative activity | Bcf	547
Basis - Natural Gas - Non-current Derivative Contract | Virginia Electric and Power Company
Derivative [Line Items]
Volume of derivative activity | Bcf	473
Fixed Price - Electricity - Current Derivative Contract
Derivative [Line Items]
Volume of electricity | MWh	7,915,870
Fixed Price - Electricity - Non-current Derivative Contract
Derivative [Line Items]
Volume of electricity | MWh	1,100,600
Financial Transmission Rights - Electricity- Current Derivative Contract
Derivative [Line Items]
Volume of electricity | MWh	18,146,928
Financial Transmission Rights - Electricity- Current Derivative Contract | Virginia Electric and Power Company
Derivative [Line Items]
Volume of electricity | MWh	18,146,928
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
NGLs - Current Derivative Contract
Derivative [Line Items]
Volume of derivative activity | gal	25,074,000
NGLs - Current Derivative Contract | Dominion Energy Gas Holdings, LLC
Derivative [Line Items]
Volume of derivative activity | gal	25,074,000
NGLs - Non-current Derivative Contract
Derivative [Line Items]
Volume of derivative activity | gal	0
NGLs - Non-current Derivative Contract | Dominion Energy Gas Holdings, LLC
Derivative [Line Items]
Volume of derivative activity | gal	0
Interest Rate - Current Derivative Contract
Derivative [Line Items]
Interest rate / Foreign currency (US Dollars, Euros)	$ 2,554,400,000
Interest Rate - Current Derivative Contract | Virginia Electric and Power Company
Derivative [Line Items]
Interest rate / Foreign currency (US Dollars, Euros)	850,000,000	[2]
Interest Rate - Current Derivative Contract | Dominion Energy Gas Holdings, LLC
Derivative [Line Items]
Interest rate / Foreign currency (US Dollars, Euros)	300,000,000	[3]
Interest Rate - Non-current Derivative Contract
Derivative [Line Items]
Interest rate / Foreign currency (US Dollars, Euros)	5,001,010,256
Interest Rate - Non-current Derivative Contract | Virginia Electric and Power Company
Derivative [Line Items]
Interest rate / Foreign currency (US Dollars, Euros)	1,200,000,000	[2]
Interest Rate - Non-current Derivative Contract | Dominion Energy Gas Holdings, LLC
Derivative [Line Items]
Interest rate / Foreign currency (US Dollars, Euros)	1,000,000,000	[3]
Foreign Exchange - Current Derivative Contract
Derivative [Line Items]
Interest rate / Foreign currency (US Dollars, Euros)	0
Foreign Exchange - Current Derivative Contract | Dominion Energy Gas Holdings, LLC
Derivative [Line Items]
Interest rate / Foreign currency (US Dollars, Euros)	0	[3],[4]
Foreign Exchange - Non- Current Derivative Contract
Derivative [Line Items]
Interest rate / Foreign currency (US Dollars, Euros)	280,000,000
Foreign Exchange - Non- Current Derivative Contract | Dominion Energy Gas Holdings, LLC
Derivative [Line Items]
Interest rate / Foreign currency (US Dollars, Euros)	$ 280,000,000	[3],[4]
[1]	Includes options.
[2]	Maturity is determined based on final settlement period.
[3]	Maturity is based on final settlement period.
[4]	Euro equivalent volumes are €250,000,000.

Derivatives and Hedge Account_8

Derivatives and Hedge Accounting Activities (Volume of Derivative Activity) (Parenthetical) (Detail) - Foreign currency	Mar. 31, 2019EUR (€)
Derivative [Line Items]
Interest rate / Foreign currency (US Dollars, Euros)	€ 250,000,000
Dominion Energy Gas Holdings, LLC
Derivative [Line Items]
Interest rate / Foreign currency (US Dollars, Euros)	€ 250,000,000

Derivatives and Hedge Account_9

Derivatives and Hedge Accounting Activities (Selected Information Related to Gains (Losses) on Cash Flow Hedges Included in AOCI) (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2019USD ($)
Derivative Instruments Gain Loss [Line Items]
AOCI After-Tax	$ (290)
Amounts Expected to be Reclassified to Earnings During the Next 12 Months After-Tax	(7)
Virginia Electric and Power Company
Derivative Instruments Gain Loss [Line Items]
AOCI After-Tax	(20)
Amounts Expected to be Reclassified to Earnings During the Next 12 Months After-Tax	(1)
Dominion Energy Gas Holdings, LLC
Derivative Instruments Gain Loss [Line Items]
AOCI After-Tax	(48)
Amounts Expected to be Reclassified to Earnings During the Next 12 Months After-Tax	(6)
Commodity | Natural Gas
Derivative Instruments Gain Loss [Line Items]
AOCI After-Tax	2
Commodities, Amounts Expected to be Reclassified to Earnings During the Next 12 Months After-Tax	$ 1
Maximum Term	43 months
Commodity | Electricity
Derivative Instruments Gain Loss [Line Items]
AOCI After-Tax	$ 33
Commodities, Amounts Expected to be Reclassified to Earnings During the Next 12 Months After-Tax	$ 24
Maximum Term	21 months
Interest rate
Derivative Instruments Gain Loss [Line Items]
AOCI After-Tax	$ (333)
Interest rate, Amounts Expected to be Reclassified to Earnings During the Next 12 Months After-Tax	$ (31)
Maximum Term	393 months
Interest rate | Virginia Electric and Power Company
Derivative Instruments Gain Loss [Line Items]
AOCI After-Tax	$ (20)
Interest rate, Amounts Expected to be Reclassified to Earnings During the Next 12 Months After-Tax	$ (1)
Maximum Term	393 months
Interest rate | Dominion Energy Gas Holdings, LLC
Derivative Instruments Gain Loss [Line Items]
AOCI After-Tax	$ (56)
Interest rate, Amounts Expected to be Reclassified to Earnings During the Next 12 Months After-Tax	$ (5)
Maximum Term	309 months
Foreign currency
Derivative Instruments Gain Loss [Line Items]
AOCI After-Tax	$ 8
Foreign currency, Amounts Expected to be Reclassified to Earnings During the Next 12 Months After-Tax	$ (1)
Maximum Term	87 months
Foreign currency | Dominion Energy Gas Holdings, LLC
Derivative Instruments Gain Loss [Line Items]
AOCI After-Tax	$ 8
Foreign currency, Amounts Expected to be Reclassified to Earnings During the Next 12 Months After-Tax	$ (1)
Maximum Term	87 months

Derivatives and Hedge Accoun_10

Derivatives and Hedge Accounting Activities (Schedule of Amounts Recorded on Balance Sheet Related to Cumulative Basis Adjustments for Fair Value Hedges) (Detail) - Designated as Hedging Instrument - Fair Value Hedging - Long-term Debt - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Carrying Amount of the Hedged Asset (Liability)	$ (739)	$ (731)
Cumulative Amount of Fair Value Hedging Adjustments Included in the Carrying Amount of the Hedged Assets(Liabilities)	$ 11	$ 19

Derivatives and Hedge Accoun_11

Derivatives and Hedge Accounting Activities (Fair Value of Derivatives) (Detail) - USD ($) $ in Millions		Mar. 31, 2019	Dec. 31, 2018
Derivatives Fair Value [Line Items]
Derivative Asset		$ 173	$ 294
Derivative Liabilities		369	279
Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Asset		66	93
Derivative Liabilities		190	103
Dominion Energy Gas Holdings, LLC
Derivatives Fair Value [Line Items]
Derivative Asset		13	31
Derivative Liabilities		42	19
Current Assets
Derivatives Fair Value [Line Items]
Derivative Asset	[1]	96	223
Current Assets | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Asset	[2]	24	63
Current Assets | Dominion Energy Gas Holdings, LLC
Derivatives Fair Value [Line Items]
Derivative Asset	[3]		5
Current Assets | Commodity
Derivatives Fair Value [Line Items]
Derivative Asset		94	209
Current Assets | Commodity | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Asset		24	60
Current Assets | Commodity | Dominion Energy Gas Holdings, LLC
Derivatives Fair Value [Line Items]
Derivative Asset			3
Current Assets | Interest rate
Derivatives Fair Value [Line Items]
Derivative Asset		2	14
Current Assets | Interest rate | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Asset			3
Current Assets | Interest rate | Dominion Energy Gas Holdings, LLC
Derivatives Fair Value [Line Items]
Derivative Asset			2
Noncurrent Assets
Derivatives Fair Value [Line Items]
Derivative Asset	[4]	77	71
Noncurrent Assets | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Asset	[5]	42	30
Noncurrent Assets | Dominion Energy Gas Holdings, LLC
Derivatives Fair Value [Line Items]
Derivative Asset	[6]	13	26
Noncurrent Assets | Commodity
Derivatives Fair Value [Line Items]
Derivative Asset		63	41
Noncurrent Assets | Commodity | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Asset		42	30
Noncurrent Assets | Interest rate
Derivatives Fair Value [Line Items]
Derivative Asset		1	4
Noncurrent Assets | Foreign currency
Derivatives Fair Value [Line Items]
Derivative Asset		13	26
Noncurrent Assets | Foreign currency | Dominion Energy Gas Holdings, LLC
Derivatives Fair Value [Line Items]
Derivative Asset		13	26
Current Liabilities
Derivatives Fair Value [Line Items]
Derivative Liabilities	[7]	119	157
Current Liabilities | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Liabilities	[8]	50	25
Current Liabilities | Dominion Energy Gas Holdings, LLC
Derivatives Fair Value [Line Items]
Derivative Liabilities	[9]	19	11
Current Liabilities | Commodity
Derivatives Fair Value [Line Items]
Derivative Liabilities		38	129
Current Liabilities | Commodity | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Liabilities		6	15
Current Liabilities | Interest rate
Derivatives Fair Value [Line Items]
Derivative Liabilities		80	26
Current Liabilities | Interest rate | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Liabilities		44	10
Current Liabilities | Interest rate | Dominion Energy Gas Holdings, LLC
Derivatives Fair Value [Line Items]
Derivative Liabilities		18	9
Current Liabilities | Foreign currency
Derivatives Fair Value [Line Items]
Derivative Liabilities		1	2
Current Liabilities | Foreign currency | Dominion Energy Gas Holdings, LLC
Derivatives Fair Value [Line Items]
Derivative Liabilities		1	2
Noncurrent Liabilities [Member]
Derivatives Fair Value [Line Items]
Derivative Liabilities	[10]	250	122
Noncurrent Liabilities [Member] | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Liabilities	[11]	140	78
Noncurrent Liabilities [Member] | Dominion Energy Gas Holdings, LLC
Derivatives Fair Value [Line Items]
Derivative Liabilities	[12]	23	8
Noncurrent Liabilities [Member] | Commodity
Derivatives Fair Value [Line Items]
Derivative Liabilities		7	6
Noncurrent Liabilities [Member] | Commodity | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Liabilities		3
Noncurrent Liabilities [Member] | Interest rate
Derivatives Fair Value [Line Items]
Derivative Liabilities		243	116
Noncurrent Liabilities [Member] | Interest rate | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Liabilities		137	78
Noncurrent Liabilities [Member] | Interest rate | Dominion Energy Gas Holdings, LLC
Derivatives Fair Value [Line Items]
Derivative Liabilities		23	8
Designated as Hedging Instrument
Derivatives Fair Value [Line Items]
Derivative Asset		66	105
Derivative Liabilities		328	166
Designated as Hedging Instrument | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Asset			3
Derivative Liabilities		181	88
Designated as Hedging Instrument | Dominion Energy Gas Holdings, LLC
Derivatives Fair Value [Line Items]
Derivative Asset		13	31
Derivative Liabilities		42	19
Designated as Hedging Instrument | Current Assets
Derivatives Fair Value [Line Items]
Derivative Asset	[1]	37	69
Designated as Hedging Instrument | Current Assets | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Asset	[2]		3
Designated as Hedging Instrument | Current Assets | Dominion Energy Gas Holdings, LLC
Derivatives Fair Value [Line Items]
Derivative Asset	[3]		5
Designated as Hedging Instrument | Current Assets | Commodity
Derivatives Fair Value [Line Items]
Derivative Asset		35	55
Designated as Hedging Instrument | Current Assets | Commodity | Dominion Energy Gas Holdings, LLC
Derivatives Fair Value [Line Items]
Derivative Asset			3
Designated as Hedging Instrument | Current Assets | Interest rate
Derivatives Fair Value [Line Items]
Derivative Asset		2	14
Designated as Hedging Instrument | Current Assets | Interest rate | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Asset			3
Designated as Hedging Instrument | Current Assets | Interest rate | Dominion Energy Gas Holdings, LLC
Derivatives Fair Value [Line Items]
Derivative Asset			2
Designated as Hedging Instrument | Noncurrent Assets
Derivatives Fair Value [Line Items]
Derivative Asset	[4]	29	36
Designated as Hedging Instrument | Noncurrent Assets | Dominion Energy Gas Holdings, LLC
Derivatives Fair Value [Line Items]
Derivative Asset	[6]	13	26
Designated as Hedging Instrument | Noncurrent Assets | Commodity
Derivatives Fair Value [Line Items]
Derivative Asset		15	6
Designated as Hedging Instrument | Noncurrent Assets | Interest rate
Derivatives Fair Value [Line Items]
Derivative Asset		1	4
Designated as Hedging Instrument | Noncurrent Assets | Foreign currency
Derivatives Fair Value [Line Items]
Derivative Asset		13	26
Designated as Hedging Instrument | Noncurrent Assets | Foreign currency | Dominion Energy Gas Holdings, LLC
Derivatives Fair Value [Line Items]
Derivative Asset		13	26
Designated as Hedging Instrument | Current Liabilities
Derivatives Fair Value [Line Items]
Derivative Liabilities	[7]	97	45
Designated as Hedging Instrument | Current Liabilities | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Liabilities	[8]	44	10
Designated as Hedging Instrument | Current Liabilities | Dominion Energy Gas Holdings, LLC
Derivatives Fair Value [Line Items]
Derivative Liabilities	[9]	19	11
Designated as Hedging Instrument | Current Liabilities | Commodity
Derivatives Fair Value [Line Items]
Derivative Liabilities		17	17
Designated as Hedging Instrument | Current Liabilities | Interest rate
Derivatives Fair Value [Line Items]
Derivative Liabilities		79	26
Designated as Hedging Instrument | Current Liabilities | Interest rate | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Liabilities		44	10
Designated as Hedging Instrument | Current Liabilities | Interest rate | Dominion Energy Gas Holdings, LLC
Derivatives Fair Value [Line Items]
Derivative Liabilities		18	9
Designated as Hedging Instrument | Current Liabilities | Foreign currency
Derivatives Fair Value [Line Items]
Derivative Liabilities		1	2
Designated as Hedging Instrument | Current Liabilities | Foreign currency | Dominion Energy Gas Holdings, LLC
Derivatives Fair Value [Line Items]
Derivative Liabilities		1	2
Designated as Hedging Instrument | Noncurrent Liabilities [Member]
Derivatives Fair Value [Line Items]
Derivative Liabilities	[10]	231	121
Designated as Hedging Instrument | Noncurrent Liabilities [Member] | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Liabilities	[11]	137	78
Designated as Hedging Instrument | Noncurrent Liabilities [Member] | Dominion Energy Gas Holdings, LLC
Derivatives Fair Value [Line Items]
Derivative Liabilities	[12]	23	8
Designated as Hedging Instrument | Noncurrent Liabilities [Member] | Commodity
Derivatives Fair Value [Line Items]
Derivative Liabilities		1	5
Designated as Hedging Instrument | Noncurrent Liabilities [Member] | Interest rate
Derivatives Fair Value [Line Items]
Derivative Liabilities		230	116
Designated as Hedging Instrument | Noncurrent Liabilities [Member] | Interest rate | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Liabilities		137	78
Designated as Hedging Instrument | Noncurrent Liabilities [Member] | Interest rate | Dominion Energy Gas Holdings, LLC
Derivatives Fair Value [Line Items]
Derivative Liabilities		23	8
Fair Value - Derivatives not under Hedge Accounting
Derivatives Fair Value [Line Items]
Derivative Asset		107	189
Derivative Liabilities		41	113
Fair Value - Derivatives not under Hedge Accounting | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Asset		66	90
Derivative Liabilities		9	15
Fair Value - Derivatives not under Hedge Accounting | Current Assets
Derivatives Fair Value [Line Items]
Derivative Asset	[1]	59	154
Fair Value - Derivatives not under Hedge Accounting | Current Assets | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Asset	[2]	24	60
Fair Value - Derivatives not under Hedge Accounting | Current Assets | Commodity
Derivatives Fair Value [Line Items]
Derivative Asset		59	154
Fair Value - Derivatives not under Hedge Accounting | Current Assets | Commodity | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Asset		24	60
Fair Value - Derivatives not under Hedge Accounting | Noncurrent Assets
Derivatives Fair Value [Line Items]
Derivative Asset	[4]	48	35
Fair Value - Derivatives not under Hedge Accounting | Noncurrent Assets | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Asset	[5]	42	30
Fair Value - Derivatives not under Hedge Accounting | Noncurrent Assets | Commodity
Derivatives Fair Value [Line Items]
Derivative Asset		48	35
Fair Value - Derivatives not under Hedge Accounting | Noncurrent Assets | Commodity | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Asset		42	30
Fair Value - Derivatives not under Hedge Accounting | Current Liabilities
Derivatives Fair Value [Line Items]
Derivative Liabilities	[7]	22	112
Fair Value - Derivatives not under Hedge Accounting | Current Liabilities | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Liabilities	[8]	6	15
Fair Value - Derivatives not under Hedge Accounting | Current Liabilities | Commodity
Derivatives Fair Value [Line Items]
Derivative Liabilities		21	112
Fair Value - Derivatives not under Hedge Accounting | Current Liabilities | Commodity | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Liabilities		6	15
Fair Value - Derivatives not under Hedge Accounting | Current Liabilities | Interest rate
Derivatives Fair Value [Line Items]
Derivative Liabilities		1
Fair Value - Derivatives not under Hedge Accounting | Noncurrent Liabilities [Member]
Derivatives Fair Value [Line Items]
Derivative Liabilities	[10]	19	1
Fair Value - Derivatives not under Hedge Accounting | Noncurrent Liabilities [Member] | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Liabilities	[11]	3
Fair Value - Derivatives not under Hedge Accounting | Noncurrent Liabilities [Member] | Commodity
Derivatives Fair Value [Line Items]
Derivative Liabilities		6	$ 1
Fair Value - Derivatives not under Hedge Accounting | Noncurrent Liabilities [Member] | Commodity | Virginia Electric and Power Company
Derivatives Fair Value [Line Items]
Derivative Liabilities		3
Fair Value - Derivatives not under Hedge Accounting | Noncurrent Liabilities [Member] | Interest rate
Derivatives Fair Value [Line Items]
Derivative Liabilities		$ 13
[1]	Current derivative assets are presented in other current assets in Dominion Energy’s Consolidated Balance Sheets.
[2]	Current derivative assets are presented in other current assets in Virginia Power’s Consolidated Balance Sheets.
[3]	Current derivative assets include $2 million in other current assets, with the remainder recorded in current assets of discontinued operations in Dominion Energy Gas’ Consolidated Balance Sheets.
[4]	Noncurrent derivative assets are presented in other deferred charges and other assets in Dominion Energy’s Consolidated Balance Sheets.
[5]	Noncurrent derivative assets are presented in other deferred charges and other assets in Virginia Power’s Consolidated Balance Sheets.
[6]	Noncurrent derivatives assets are presented in other deferred charges and other assets in Dominion Energy Gas’ Consolidated Balance Sheets.
[7]	Current derivative liabilities are presented in other current liabilities in Dominion Energy’s Consolidated Balance Sheets.
[8]	Current derivative liabilities are presented in other current liabilities in Virginia Power’s Consolidated Balance Sheets.
[9]	Current derivative liabilities are presented in other current liabilities in Dominion Energy Gas’ Consolidated Balance Sheets.
[10]	Noncurrent derivative liabilities are presented in other deferred credits and other liabilities in Dominion Energy’s Consolidated Balance Sheets.
[11]	Noncurrent derivative liabilities are presented in other deferred credits and other liabilities in Virginia Power’s Consolidated Balance Sheets.
[12]	Noncurrent derivative liabilities are presented in other deferred credits and other liabilities in Dominion Energy Gas’ Consolidated Balance Sheets.

Derivatives and Hedge Accoun_12

Derivatives and Hedge Accounting Activities (Fair Value of Derivatives) (Parenthetical) (Detail) - USD ($) $ in Millions		Mar. 31, 2019	Dec. 31, 2018
Derivatives, Fair Value [Line Items]
Derivative asset		$ 173	$ 294
Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative asset	[1]	96	223
Dominion Energy Gas Holdings, LLC
Derivatives, Fair Value [Line Items]
Derivative asset		13	31
Dominion Energy Gas Holdings, LLC | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative asset	[2]		5
Dominion Energy Gas Holdings, LLC | Other Current Assets [Member] | Discontinued Operations [Member]
Derivatives, Fair Value [Line Items]
Derivative asset		$ 2	$ 2
[1]	Current derivative assets are presented in other current assets in Dominion Energy’s Consolidated Balance Sheets.
[2]	Current derivative assets include $2 million in other current assets, with the remainder recorded in current assets of discontinued operations in Dominion Energy Gas’ Consolidated Balance Sheets.

Derivatives and Hedge Accoun_13

Derivatives and Hedge Accounting Activities (Gains and Losses on Derivatives in Cash Flow Hedging Relationships) (Detail) - Cash Flow Hedges - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives	[1]	$ (29)	$ 148
Amount of Gain (Loss) Reclassified From AOCI to Income		41	(11)
Increase (Decrease) in Derivatives Subject to Regulatory Treatment	[2]	(84)	68
Virginia Electric and Power Company
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives	[3]	(9)	7
Increase (Decrease) in Derivatives Subject to Regulatory Treatment	[4]	(84)	68
Dominion Energy Gas Holdings, LLC
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives	[5]	(36)	19
Amount of Gain (Loss) Reclassified From AOCI to Income		(3)	3
Commodity
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives	[1]	66	97
Amount of Gain (Loss) Reclassified From AOCI to Income		57	(7)
Commodity | Dominion Energy Gas Holdings, LLC
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives	[5]	(1)	4
Amount of Gain (Loss) Reclassified From AOCI to Income		2	(3)
Commodity | Net income from discontinued operations | Dominion Energy Gas Holdings, LLC
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Reclassified From AOCI to Income		2	(3)
Commodity | Operating Revenue
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Reclassified From AOCI to Income		54	(12)
Commodity | Purchased Gas
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Reclassified From AOCI to Income		3	(2)
Commodity | Electric Fuel and Other Energy-Related Purchases
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Reclassified From AOCI to Income			7
Interest rate
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives	[1],[6]	(84)	38
Amount of Gain (Loss) Reclassified From AOCI to Income	[6]	(10)	(12)
Increase (Decrease) in Derivatives Subject to Regulatory Treatment	[2],[6]	(84)	68
Interest rate | Virginia Electric and Power Company
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives	[3],[7]	(9)	7
Increase (Decrease) in Derivatives Subject to Regulatory Treatment	[4],[7]	(84)	68
Interest rate | Dominion Energy Gas Holdings, LLC
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives	[5],[8]	(24)	2
Amount of Gain (Loss) Reclassified From AOCI to Income	[8]	1	(2)
Foreign currency
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives	[1],[9]	(11)	13
Amount of Gain (Loss) Reclassified From AOCI to Income	[9]	(6)	8
Foreign currency | Dominion Energy Gas Holdings, LLC
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives	[5],[10]	(11)	13
Amount of Gain (Loss) Reclassified From AOCI to Income	[10]	$ (6)	$ 8
[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 deferred into AOCI have no associated effect in Dominion Energy Gas’ Consolidated Statements of Income.
[6]	Amounts recorded in Dominion Energy’s Consolidated Statements of Income are classified in interest and related charges.
[7]	Amounts recorded in Virginia Power’s Consolidated Statements of Income are classified in interest and related charges.
[8]	Amounts recorded in Dominion Energy Gas’ Consolidated Statements of Income are classified in interest and related charges.
[9]	Amounts recorded in Dominion Energy’s Consolidated Statements of Income are classified in other income.
[10]	Amounts recorded in Dominion Energy Gas’ Consolidated Statements of Income are classified in other income.

Derivatives and Hedge Accoun_14

Derivatives and Hedge Accounting Activities (Schedule of Derivatives not Designated as Hedging Instruments) (Detail) - Derivatives Not Designated as Hedging Instruments - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives	[1]	$ (3)	$ (7)
Virginia Electric and Power Company
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives		(9)
Commodity | Virginia Electric and Power Company
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives	[2],[3]	(9)
Commodity | Operating Revenue
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives	[1]	3	6
Commodity | Purchased Gas
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives	[1]	3
Commodity | Electric Fuel and Other Energy-Related Purchases
Derivative Instruments Gain Loss [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives	[1]	$ (9)	$ (13)
[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]	Amounts recorded in Virginia Power’s Consolidated Statements of Income are classified in electric fuel and other energy-related purchases.
[3]	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) $ in Millions		1 Months Ended	3 Months Ended				12 Months Ended
		Sep. 30, 2014membermi	Mar. 31, 2019USD ($)	Dec. 31, 2018USD ($)		Mar. 31, 2018USD ($)	Dec. 31, 2021USD ($)	Dec. 31, 2018USD ($)
Schedule of Equity Method Investments [Line Items]
Contributions to equity method affiliates			$ 69			$ 87
Investment in equity method affiliates			1,433	$ 1,278	[1]			$ 1,278	[1]
Other receivables	[2]		203	331	[1]			$ 331	[1]
Blue Racer
Schedule of Equity Method Investments [Line Items]
Additional consideration including interest received in connection with sale			151
Ownership interest percentage of limited partner interests								50.00%
Dominion Energy Gas Holdings, LLC
Schedule of Equity Method Investments [Line Items]
Investment in equity method affiliates			337	339	[3]			$ 339	[3]
Other receivables	[4]		13	18	[3]			18	[3]
Equity in earnings on investments			13			20
Dominion Energy Gas Holdings, LLC | Partnership Interest
Schedule of Equity Method Investments [Line Items]
Investment in equity method affiliates			337	339				339
Equity in earnings on investments			13			20
Distributions received from investment			15			15
Carrying amount of investment that exceeded share of underlying equity			146	146				146
Atlantic Coast Pipeline
Schedule of Equity Method Investments [Line Items]
Contributions to equity method affiliates			95			78
Atlantic Coast Pipeline | Previous Minimum
Schedule of Equity Method Investments [Line Items]
Project cost estimates				6,000
Atlantic Coast Pipeline | Previous Maximum
Schedule of Equity Method Investments [Line Items]
Project cost estimates				6,500
Atlantic Coast Pipeline | Current Minimum
Schedule of Equity Method Investments [Line Items]
Project cost estimates				7,000
Atlantic Coast Pipeline | Current Maximum
Schedule of Equity Method Investments [Line Items]
Project cost estimates				7,500
Atlantic Coast Pipeline | Scenario Forecast
Schedule of Equity Method Investments [Line Items]
Project cost estimates increase							$ 250
Atlantic Coast Pipeline | Minimum | Scenario Forecast
Schedule of Equity Method Investments [Line Items]
Project cost estimates							7,250
Atlantic Coast Pipeline | Maximum | Scenario Forecast
Schedule of Equity Method Investments [Line Items]
Project cost estimates							$ 7,750
Atlantic Coast Pipeline | DETI
Schedule of Equity Method Investments [Line Items]
Revenue			31			$ 46
Other receivables			11	13				13
Atlantic Coast Pipeline | Current Liabilities
Schedule of Equity Method Investments [Line Items]
Investment in equity method affiliates			$ 32
Atlantic Coast Pipeline | Pipelines | Jointly Owned Natural Gas Pipeline | Distribution
Schedule of Equity Method Investments [Line Items]
Ownership interest (percentage)			48.00%
Length of natural gas pipeline (in miles) | mi		600
Number of members | member		3
Duration of contract		20 years
Atlantic Coast Pipeline | Pipelines | Jointly Owned Natural Gas Pipeline | Distribution | Duke Energy
Schedule of Equity Method Investments [Line Items]
Ownership interest (percentage)			47.00%
Atlantic Coast Pipeline | Pipelines | Jointly Owned Natural Gas Pipeline | Distribution | Southern Company Gas [Member]
Schedule of Equity Method Investments [Line Items]
Ownership interest (percentage)			5.00%
Trading Securities
Schedule of Equity Method Investments [Line Items]
Rabbi trust securities			$ 112	$ 111				$ 111
[1]	Dominion Energy’s Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.
[2]	See Note 10 for amounts attributable to related parties.
[3]	Dominion Energy Gas’ Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.
[4]	See Note 19 for amounts attributable to related parties.

Investments (Equity and Fixed I

Investments (Equity and Fixed Income Securities, Insurance Contracts and Cash Equivalents in Decommissioning Trust Funds) (Detail) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
		Mar. 31, 2019	Dec. 31, 2018
Investment Holdings [Line Items]
Fixed income securities Recorded Value		$ 1,643
Amortized Cost, Total		3,557	$ 3,348
Total Unrealized Gains		2,046	1,662
Total Unrealized Losses	[1]	(23)	(72)
Recorded Value, Total		5,580	4,938	[2]
Fair value of securities in an unrealized loss position		405	833
Net assets related to pending sales and purchases of securities		4
Virginia Electric and Power Company
Investment Holdings [Line Items]
Fixed income securities Recorded Value		800
Amortized Cost, Total		1,659	1,643
Total Unrealized Gains		943	760
Total Unrealized Losses	[3]	(11)	(34)
Recorded Value, Total		2,591	2,369	[4]
Fair value of securities in an unrealized loss position		178	404
Net assets related to pending sales and purchases of securities		7	6
Fixed Income
Investment Holdings [Line Items]
Cash equivalents and other Amortized Cost	[5]	6	4
Cash equivalents and other Recorded Value	[5]	6	4
Common/collective trust funds | Fixed Income
Investment Holdings [Line Items]
Fixed income securities Amortized Cost, Total	[6]	72	76
Fixed income securities Recorded Value	[6]	72	76
Common/collective trust funds | Fixed Income | Virginia Electric and Power Company
Investment Holdings [Line Items]
Fixed income securities Amortized Cost, Total	[6]	48	51
Fixed income securities Recorded Value	[6]	48	51
Corporate debt instruments | Fixed Income
Investment Holdings [Line Items]
Fixed income securities Amortized Cost, Total	[6]	457	435
Fixed income securities Total Unrealized Gains	[6]	15	5
Fixed income securities Total Unrealized Losses	[6]	(2)	(9)
Fixed income securities Recorded Value	[6]	470	431
Corporate debt instruments | Fixed Income | Virginia Electric and Power Company
Investment Holdings [Line Items]
Fixed income securities Amortized Cost, Total	[6]	227	224
Fixed income securities Total Unrealized Gains	[6]	7	2
Fixed income securities Total Unrealized Losses	[6]	(1)	(5)
Fixed income securities Recorded Value	[6]	233	221
Government Securities | Fixed Income
Investment Holdings [Line Items]
Fixed income securities Amortized Cost, Total	[6]	1,076	1,092
Fixed income securities Total Unrealized Gains	[6]	29	17
Fixed income securities Total Unrealized Losses	[6]	(4)	(12)
Fixed income securities Recorded Value	[6]	1,101	1,097
Government Securities | Fixed Income | Virginia Electric and Power Company
Investment Holdings [Line Items]
Fixed income securities Amortized Cost, Total	[6]	506	504
Fixed income securities Total Unrealized Gains	[6]	14	7
Fixed income securities Total Unrealized Losses	[6]	(1)	(5)
Fixed income securities Recorded Value	[6]	519	506
Equity securities: | U.S.
Investment Holdings [Line Items]
Equity securities Amortized Cost	[7]	1,747	1,741
Equity securities Total Unrealized Gains	[7]	2,002	1,640
Equity securities Total Unrealized Losses	[7]	(17)	(51)
Equity securities Recorded Value	[7]	3,732	3,330
Equity securities: | U.S. | Virginia Electric and Power Company
Investment Holdings [Line Items]
Equity securities Amortized Cost	[7]	871	858
Equity securities Total Unrealized Gains	[7]	922	751
Equity securities Total Unrealized Losses	[7]	(9)	(24)
Equity securities Recorded Value	[7]	1,784	1,585
Insurance Contracts
Investment Holdings [Line Items]
Fixed income securities Amortized Cost, Total		199
Fixed income securities Recorded Value		199
Cash Equivalents and Other | Virginia Electric and Power Company
Investment Holdings [Line Items]
Cash equivalents and other Amortized Cost	[8]	7	6
Cash equivalents and other Recorded Value	[8]	$ 7	$ 6
[1]	The fair value of securities in an unrealized loss position was $405 million and $833 million at March 31, 2019 and December 31, 2018, respectively.
[2]	Dominion Energy’s Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.
[3]	The fair value of securities in an unrealized loss position was $178 million and $404 million at March 31, 2019 and December 31, 2018, respectively.
[4]	Virginia Power’s Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.
[5]	Includes pending sales of securities of $4 million at March 31, 2019.
[6]	Unrealized gains and losses on fixed income securities are included in AOCI and the nuclear decommissioning trust regulatory liability.
[7]	Unrealized gains and losses on equity securities are included in other income and the nuclear decommissioning trust regulatory liability.
[8]	Includes pending sales of securities of $7 million and $6 million at March 31, 2019 and December 31, 2018, respectively.

Investments (Portion of Unreali

Investments (Portion of Unrealized Gains and Losses Relates to Equity Securities) (Detail) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Investment Holdings [Line Items]
Net gains (losses) recognized during the period		$ 414	$ (65)
Less: Net gains recognized during the period on securities sold during the period		(19)	(19)
Unrealized gains (losses) recognized during the period on securities still held at March 31, 2019 and 2018	[1]	395	(84)
Virginia Electric and Power Company
Investment Holdings [Line Items]
Net gains (losses) recognized during the period		186	(32)
Less: Net gains recognized during the period on securities sold during the period		(1)	(15)
Unrealized gains (losses) recognized during the period on securities still held at March 31, 2019 and 2018	[1]	$ 185	$ (47)
[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	Mar. 31, 2019USD ($)
Schedule of Held-to-maturity Securities [Line Items]
Due in one year or less	$ 187
Due after one year through five years	382
Due after five years through ten years	394
Due after ten years	680
Total	1,643
Virginia Electric and Power Company
Schedule of Held-to-maturity Securities [Line Items]
Due in one year or less	77
Due after one year through five years	145
Due after five years through ten years	219
Due after ten years	359
Total	$ 800

Investments (Selected Informati

Investments (Selected Information Regarding Equity and Fixed Income Securities) (Detail) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Schedule of Available-for-sale Securities [Line Items]
Proceeds from sales		$ 506	$ 419
Realized gains	[1]	43	36
Realized losses	[1]	23	19
Virginia Electric and Power Company
Schedule of Available-for-sale Securities [Line Items]
Proceeds from sales		253	218
Realized gains	[1]	10	18
Realized losses	[1]	$ 9	$ 5
[1]	Includes realized gains and losses recorded to the nuclear decommissioning trust regulatory liability.

Property Plant and Equipment (N

Property Plant and Equipment (Narrative) (Detail) $ in Millions	1 Months Ended						3 Months Ended		12 Months Ended
	Apr. 30, 2019USD ($)MW	Jan. 31, 2019MW	Aug. 31, 2018project	Mar. 31, 2018USD ($)afield	Feb. 28, 2018USD ($)	Jan. 31, 2018a	Mar. 31, 2019USD ($)	Mar. 31, 2018USD ($)afield	Dec. 31, 2020USD ($)MW	Dec. 31, 2019USD ($)	Nov. 30, 2014afield
Property Plant And Equipment [Line Items]
Cost of project							$ 29	$ 7
Virginia Electric and Power Company
Property Plant And Equipment [Line Items]
Cost of project							$ 27
MW Capacity | MW		1,292
Virginia Electric and Power Company | Solar Development Project in Virginia
Property Plant And Equipment [Line Items]
Cost of project	$ 37
MW Capacity | MW	20
Virginia Electric and Power Company | Two Solar Development Projects
Property Plant And Equipment [Line Items]
Number of Projects | project			2
Virginia Electric and Power Company | Two Solar Development Projects | Scenario Forecast
Property Plant And Equipment [Line Items]
MW Capacity | MW									155
Virginia Electric and Power Company | First Solar Development Project | Subsequent Event
Property Plant And Equipment [Line Items]
Cost of project										$ 120
Virginia Electric and Power Company | Second Solar Development Project | Scenario Forecast
Property Plant And Equipment [Line Items]
Cost of project									$ 130
Dominion Energy Gas Holdings, LLC | Marcellus Shale | Oil and Gas Properties
Property Plant And Equipment [Line Items]
Development rights (number of acres) | a						18,000					24,000
Number of natural gas storage fields | field											1
Gas and oil area developed net remaining interest conveyed percentage						50.00%
Amount of consideration					$ 28
Dominion Energy Gas Holdings, LLC | Utica and Point Pleasant Shale | Oil and Gas Properties
Property Plant And Equipment [Line Items]
Development rights (number of acres) | a				11,000				11,000
Number of natural gas storage fields | field				1				1
Amount of consideration				$ 16				$ 16
Proceeds from assignment of Shale Development Rights				16
Dominion Energy Gas Holdings, LLC | Other operations and maintenance | Marcellus Shale | Oil and Gas Properties
Property Plant And Equipment [Line Items]
Gain on sale					28
After tax gain on sale					$ 20
Dominion Energy Gas Holdings, LLC | Other operations and maintenance | Utica and Point Pleasant Shale | Oil and Gas Properties
Property Plant And Equipment [Line Items]
Gain on sale				16
After tax gain on sale				$ 12

Regulatory Assets and Liabili_3

Regulatory Assets and Liabilities (Schedule of Regulatory Assets) (Detail) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019	Dec. 31, 2018
Regulatory Assets [Line Items]
Regulatory assets-current		$ 725	$ 496	[1]
Regulatory assets-noncurrent		7,575	2,676	[1]
Total regulatory assets		$ 8,300	3,172
Weighted Average
Regulatory Assets [Line Items]
Weighted average useful life		30 years
SCANA
Regulatory Assets [Line Items]
Electric service customers over period		20 years
DESC
Regulatory Assets [Line Items]
Repurchase of first mortgage bonds		$ 1,200
Debt issuance costs		$ 187
Cost of reacquired debt
Regulatory Assets [Line Items]
Amortization period for deferred costs		30 years
Virginia Electric and Power Company
Regulatory Assets [Line Items]
Regulatory assets-current	[2]	$ 387	424
Regulatory assets-noncurrent		1,719	737	[3]
Total regulatory assets		2,106	1,161
Excess deferred taxes adjusted in charge of operating revenue		29
Excess deferred taxes adjusted in charge of operating revenue net of tax		22
Write off of regulatory asset		17
Write off of regulatory asset, after tax		$ 13
Virginia Electric and Power Company | Weighted Average
Regulatory Assets [Line Items]
Weighted average useful life		21 years
Dominion Energy Gas Holdings, LLC
Regulatory Assets [Line Items]
Regulatory assets-current	[4]	$ 8	8
Regulatory assets-noncurrent	[5]	52	52
Total regulatory assets		60	60
Deferred cost of fuel used in electric generation
Regulatory Assets [Line Items]
Regulatory assets-current	[6]	117	174
Regulatory assets-noncurrent	[6]	123	83
Deferred cost of fuel used in electric generation | Virginia Electric and Power Company
Regulatory Assets [Line Items]
Regulatory assets-current	[7]	112	174
Regulatory assets-noncurrent	[7]	123	83
Deferred Rate Adjustment Clause Costs For Virginia Electric Utility
Regulatory Assets [Line Items]
Regulatory assets-current	[8],[9]	90	78
Regulatory assets-noncurrent	[8],[9],[10]	194	230
Deferred nuclear refueling outage costs
Regulatory Assets [Line Items]
Regulatory assets-current	[11]	70	69
Deferred nuclear refueling outage costs | Virginia Electric and Power Company
Regulatory Assets [Line Items]
Regulatory assets-current	[11]	70	69
Unrecovered NND Project Costs
Regulatory Assets [Line Items]
Regulatory assets-current	[12]	138
Regulatory assets-noncurrent	[12]	2,607
Other
Regulatory Assets [Line Items]
Regulatory assets-current		246	130
Regulatory assets-noncurrent		465	125
Other | Virginia Electric and Power Company
Regulatory Assets [Line Items]
Regulatory assets-current		51	58
Regulatory assets-noncurrent		58	54
Other | Dominion Energy Gas Holdings, LLC
Regulatory Assets [Line Items]
Regulatory assets-current		7	7
Regulatory assets-noncurrent		3	4
Unrecognized pension and other postretirement benefit costs
Regulatory Assets [Line Items]
Regulatory assets-noncurrent	[13]	1,521	1,497
Unrecognized pension and other postretirement benefit costs | Dominion Energy Gas Holdings, LLC
Regulatory Assets [Line Items]
Regulatory assets-noncurrent	[14]	16	15
PJM transmission rates
Regulatory Assets [Line Items]
Regulatory assets-current	[15]	64	45
Regulatory assets-noncurrent	[15]	174	192
PJM transmission rates | Virginia Electric and Power Company
Regulatory Assets [Line Items]
Regulatory assets-current	[15]	64	45
Regulatory assets-noncurrent	[15]	174	192
Deferred project costs for gas utilities
Regulatory Assets [Line Items]
Regulatory assets-noncurrent	[16]	440	335
AROs and related funding
Regulatory Assets [Line Items]
Regulatory assets-noncurrent	[17]	$ 350
Amortization period for deferred costs		106 years
Interest rate hedges
Regulatory Assets [Line Items]
Regulatory assets-noncurrent	[18]	$ 563	184
Interest rate hedges | Virginia Electric and Power Company
Regulatory Assets [Line Items]
Regulatory assets-noncurrent	[19]	235	151
Interest rate hedges | Dominion Energy Gas Holdings, LLC
Regulatory Assets [Line Items]
Regulatory assets-noncurrent	[18]	33	33
Cost of reacquired debt
Regulatory Assets [Line Items]
Regulatory assets-noncurrent	[20],[21]	203	3
Ash pond and landfill closure costs
Regulatory Assets [Line Items]
Regulatory assets-noncurrent	[22]	935	27
Ash pond and landfill closure costs | Virginia Electric and Power Company
Regulatory Assets [Line Items]
Regulatory assets-noncurrent	[23]	$ 935	27
Deferred Project Costs | Maximum [Member]
Regulatory Assets [Line Items]
Amortization period for deferred costs		18 months
Deferred Project Costs | Virginia Electric and Power Company | Maximum [Member]
Regulatory Assets [Line Items]
Amortization period for deferred costs		18 months
Transmission Rate Design For Allocation Of Costs Of Service | FERC-regulated
Regulatory Assets [Line Items]
Duration of payment under settlement agreement		10 years
Transmission Rate Design For Allocation Of Costs Of Service | Virginia Electric and Power Company | FERC-regulated
Regulatory Assets [Line Items]
Duration of payment under settlement agreement		10 years
Deferred rate adjustment clause costs | Virginia Electric and Power Company
Regulatory Assets [Line Items]
Regulatory assets-current	[8],[24]	$ 90	78
Regulatory assets-noncurrent	[8],[10],[24]	194	230
Unrecovered gas costs | Dominion Energy Gas Holdings, LLC
Regulatory Assets [Line Items]
Regulatory assets-current	[25]	$ 1	$ 1
[1]	Dominion Energy’s Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.
[2]	Current regulatory assets are presented in other current assets in Virginia Power’s Consolidated Balance Sheets.
[3]	Virginia Power’s Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.
[4]	Current regulatory assets are presented in other current assets in Dominion Energy Gas’ Consolidated Balance Sheets.
[5]	Noncurrent regulatory assets are presented in other deferred charges and other assets in Dominion Energy Gas’ Consolidated Balance Sheets.
[6]	Reflects deferred fuel expenses for the Virginia, North Carolina and South Carolina jurisdictions of Dominion Energy’s electric generation operations.
[7]	Reflects deferred fuel expenses for the Virginia and North Carolina jurisdictions of Virginia Power’s generation operations.
[8]	As a result of actions from the Virginia Commission in the first quarter of 2019 regarding the ratemaking treatment of excess deferred taxes from the adoption of the 2017 Tax Reform Act for all existing rate adjustment clauses, Virginia Power recorded a $29 million ($22 million after-tax) charge in operating revenue in the Consolidated Statements of Income for amounts which are probable of being returned to customers.
[9]	Reflects deferrals under Virginia Power’s electric transmission FERC formula rate and the deferral of costs associated with certain current and prospective rider projects, net of income taxes refundable from the 2017 Tax Reform Act for Virginia Power. See Note 13 for more information.
[10]	During the first quarter of 2019, Virginia Power recorded a charge of $17 million ($13 million after-tax) to write-off the balance of a regulatory asset for which it is no longer seeking recovery.
[11]	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.
[12]	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 for more information.
[13]	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.
[14]	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 Gas’ rate-regulated subsidiaries.
[15]	Reflects amounts to be recovered through retail rates in Virginia for payments Virginia Power will make to PJM over a ten-year period ending 2028 under the terms of a FERC settlement agreement in May 2018 resolving a PJM cost allocation matter.
[16]	Primarily reflects amounts expected to be collected from or owed to gas customers in Dominion Energy’s service territories associated with current and prospective rider projects, including CEP, PIR, and pipeline integrity management. See Note 13 for more information.
[17]	Represents deferred depreciation and accretion expense related to legal obligations associated with the future retirement of property, plant and equipment, excluding amounts related to CCRs, for DESC and PSNC. The AROs primarily relate to nuclear decommissioning activities and are expected to be recovered over the related property lives and periods of decommissioning which may range up to approximately 106 years.
[18]	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 30 years.
[19]	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 21 years.
[20]	Cost of the reacquisition of debt are deferred and amortized as interest expense over the would-be remaining life of the reacquired debt. The reacquired debt costs had a weighted-average life of approximately 30 years as of March 31, 2019.
[21]	In March 2019, DESC purchased certain of its first mortgage bonds having an aggregate purchase price of $1.2 billion, as discussed in Note 16. As a result of this transaction, Dominion Energy incurred costs, including write-off of unamortized discount, premium, and debt issuance costs, of $187 million.
[22]	Primarily reflects legislation enacted in Virginia in March 2019 which requires any CCR unit located at certain Virginia Power stations to be closed by removing the CCRs to an approved landfill or through recycling for beneficial reuse. See Note 17 for additional information.
[23]	Primarily reflects legislation enacted in Virginia in March 2019 which requires any CCR unit located at certain Virginia Power stations to be closed by removing the CCR to an approved landfill or through recycling for beneficial reuse. See Note 17 for additional information.
[24]	Primarily reflects deferrals under Virginia Power’s electric transmission FERC formula rate and the deferral of costs associated with certain current and prospective rider projects, net of income taxes refundable from the 2017 Tax Reform Act for Virginia Power. See Note 13 for more information.
[25]	Reflects unrecovered or overrecovered gas costs at regulated gas operations, which are recovered or refunded through filings with the applicable regulatory authority.

Regulatory Assets and Liabili_4

Regulatory Assets and Liabilities (Schedule of Regulatory Liabilities) (Detail) - USD ($) $ in Millions		Mar. 31, 2019	Dec. 31, 2018
Regulatory Liabilities [Line Items]
Regulatory liabilities-current		$ 612	$ 356	[1]
Regulatory liabilities-noncurrent		10,799	6,840	[1]
Total regulatory liabilities		11,411	7,196
Virginia Electric and Power Company
Regulatory Liabilities [Line Items]
Regulatory liabilities-current		281	299	[2]
Regulatory liabilities-noncurrent		4,808	4,647	[2]
Total regulatory liabilities		5,089	4,946
Dominion Energy Gas Holdings, LLC
Regulatory Liabilities [Line Items]
Regulatory liabilities-current	[3]	29	24
Regulatory liabilities-noncurrent		816	765	[4]
Total regulatory liabilities		845	789
Provision for future cost of removal and AROs
Regulatory Liabilities [Line Items]
Regulatory liabilities-current	[5]	117	117
Regulatory liabilities-noncurrent	[5]	2,222	1,409
Provision for future cost of removal and AROs | Virginia Electric and Power Company
Regulatory Liabilities [Line Items]
Regulatory liabilities-current	[6]	92	92
Provision for future cost of removal and AROs | Dominion Energy Gas Holdings, LLC
Regulatory Liabilities [Line Items]
Regulatory liabilities-current	[7]	10	9
Regulatory liabilities-noncurrent	[7]	115	113
Overrecovered gas costs
Regulatory Liabilities [Line Items]
Regulatory liabilities-current	[8]	7	7
Other
Regulatory Liabilities [Line Items]
Regulatory liabilities-current		71	64
Regulatory liabilities-noncurrent		301	170
Other | Virginia Electric and Power Company
Regulatory Liabilities [Line Items]
Regulatory liabilities-current		27	41
Regulatory liabilities-noncurrent		102	58
Other | Dominion Energy Gas Holdings, LLC
Regulatory Liabilities [Line Items]
Regulatory liabilities-current		12	8
Regulatory liabilities-noncurrent		16	16
Nuclear decommissioning trust
Regulatory Liabilities [Line Items]
Regulatory liabilities-noncurrent	[9]	1,247	1,070
Nuclear decommissioning trust | Virginia Electric and Power Company
Regulatory Liabilities [Line Items]
Regulatory liabilities-noncurrent	[10]	1,247	1,070
Monetization of guarantee settlement
Regulatory Liabilities [Line Items]
Regulatory liabilities-current	[11]	67
Regulatory liabilities-noncurrent	[11]	1,020
Cost-of-service impact of 2017 Tax Reform Act
Regulatory Liabilities [Line Items]
Regulatory liabilities-current	[12]	93	104
Cost-of-service impact of 2017 Tax Reform Act | Virginia Electric and Power Company
Regulatory Liabilities [Line Items]
Regulatory liabilities-current	[13]	88	95
Reserve for refunds and rate credits to electric utility customers
Regulatory Liabilities [Line Items]
Regulatory liabilities-current	[14]	137	71
Regulatory liabilities-noncurrent	[14]	846
Reserve for refunds and rate credits to electric utility customers | Virginia Electric and Power Company
Regulatory Liabilities [Line Items]
Regulatory liabilities-current	[15]		71
Income taxes refundable through future rates
Regulatory Liabilities [Line Items]
Regulatory liabilities-current		127
Regulatory liabilities-noncurrent		5,034	4,071
Income taxes refundable through future rates | Virginia Electric and Power Company
Regulatory Liabilities [Line Items]
Regulatory liabilities-current	[16]	74
Regulatory liabilities-noncurrent	[16]	2,500	2,579
Income taxes refundable through future rates | Dominion Energy Gas Holdings, LLC
Regulatory Liabilities [Line Items]
Regulatory liabilities-noncurrent	[16]	572	530
Overrecovered Other Postretirement Benefit Costs
Regulatory Liabilities [Line Items]
Regulatory liabilities-noncurrent	[17]	129	120
Overrecovered Other Postretirement Benefit Costs | Dominion Energy Gas Holdings, LLC
Regulatory Liabilities [Line Items]
Regulatory liabilities-noncurrent	[17]	113	106
Provision For Future Cost Of Removal | Virginia Electric and Power Company
Regulatory Liabilities [Line Items]
Regulatory liabilities-noncurrent	[6]	$ 959	$ 940
[1]	Dominion Energy’s Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.
[2]	Virginia Power’s Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.
[3]	Current regulatory liabilities are presented in other current liabilities in Dominion Energy Gas’ Consolidated Balance Sheets.
[4]	Dominion Energy Gas’ Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.
[5]	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.
[6]	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.
[7]	Rates charged to customers by Dominion Energy Gas’ 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.
[8]	Reflects unrecovered or overrecovered gas costs at regulated gas operations, which are recovered or refunded through filings with the applicable regulatory authority.
[9]	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.
[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) for the future decommissioning of Virginia Power’s utility nuclear generation stations, in excess of the related AROs.
[11]	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 for additional information.
[12]	Balance refundable to customers related to the decrease in revenue requirements for recovery of income taxes at the Companies’ regulated electric generation and electric and natural gas distribution operations. 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, 2018, as updated in Current Report on Form 8-K, filed November 18, 2019, and Note 13 in this report for more information.
[13]	Balance refundable to customers related to the decrease in revenue requirements for recovery of income taxes at regulated electric generation and distribution operations. See Note 13 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2018, as updated in Current Report on Form 8-K, filed November 18, 2019, and Note 13 in this report for more information.
[14]	Reflects amounts previously collected from retail electric customers of DESC for the NND Project to be credited over an estimated 11-year period in connection with the SCANA Merger Approval Order and Virginia legislation enacted in March 2018 that required one-time rate credits of certain amounts to utility customers in Virginia. 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, 2018, as updated in Current Report on Form 8-K, filed November 18, 2019, and Note 3 in this report for more information.
[15]	Charge associated with Virginia legislation enacted in March 2018 that required one-time rate credits of certain amounts to utility customers. See Note 13 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2018, as updated in Current Report on Form 8-K, filed November 18, 2019, for more information.
[16]	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.
[17]	Reflects a regulatory liability for the collection of postretirement benefit costs allowed in rates in excess of expense incurred.

Regulatory Assets and Liabili_5

Regulatory Assets and Liabilities (Narrative) (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2019USD ($)
Public Utilities General Disclosures [Line Items]
Regulatory assets past expenditures not earning return	$ 1,500
Period for which expenditures are expected to be recovered	2 years
Dominion Energy Gas Holdings, LLC
Public Utilities General Disclosures [Line Items]
Regulatory assets past expenditures not earning return	$ 295
Virginia Electric and Power Company
Public Utilities General Disclosures [Line Items]
Regulatory assets past expenditures not earning return	$ 42

Regulatory Matters (Narrative)

Regulatory Matters (Narrative) (Detail) ft³ in Millions, customer in Millions, $ in Millions

Nov. 01, 2019USD ($)

May 03, 2019USD ($)

May 31, 2019USD ($)

Apr. 30, 2019ft³

Mar. 31, 2019USD ($)

Feb. 28, 2019USD ($)

Jan. 31, 2019USD ($)

Oct. 31, 2018USD ($)

Jul. 31, 2018USD ($)

Nov. 30, 2013kVmi

Mar. 31, 2019USD ($)

Dec. 31, 2017customer

Dec. 31, 2011

Dec. 31, 2018USD ($)

SCE&G [Member]

Public Utilities General Disclosures [Line Items]

Recover of cost and net lost revenue with incentive

$ 30

Virginia Electric and Power Company

Public Utilities General Disclosures [Line Items]

Submitted and approved decrease in base rate revenue

$ 14

Regulatory liabilities one time bill credit amount

13

Virginia Electric and Power Company | Virginia Regulation

Public Utilities General Disclosures [Line Items]

Proposed annual revenue reduction amount

$ 171

Interim rate reduction amount

$ 125

Annual revenue reduction amount

$ 183

Estimated annual revenue reduction on one-time customer credit

$ 135

Return of equity percentage

10.75%

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

Public Utilities General Disclosures [Line Items]

Length of transmission line (miles) | mi

7

Capacity of transmission line (kV) | kV

500

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

Public Utilities General Disclosures [Line Items]

Length of transmission line (miles) | mi

20

Capacity of transmission line (kV) | kV

230

Virginia Electric and Power Company | Virginia Regulation | Rider U

Public Utilities General Disclosures [Line Items]

Proposed revenue requirement

$ 52

Projected capital investment

$ 123

Virginia Electric and Power Company | Virginia Regulation | DSM Programs

Public Utilities General Disclosures [Line Items]

Proposed revenue requirement

49

Projected capital investment

262

Increase (decrease) in revenue requirement

$ 18

Virginia Electric and Power Company | Virginia Regulation | Rider C3A

Public Utilities General Disclosures [Line Items]

Proposed revenue requirement

$ 49

Virginia Electric and Power Company | Virginia Regulation | Solar Development Project | Rider US-3 | Operating Segments

Public Utilities General Disclosures [Line Items]

Proposed revenue requirement

$ 10

Virginia Electric and Power Company | North Carolina Regulation

Public Utilities General Disclosures [Line Items]

Return of equity percentage

10.75%

Percentage of earned return

7.52%

Authorized return percentage

9.90%

Virginia Electric and Power Company | North Carolina Regulation | Annual Base Fuel Revenues

Public Utilities General Disclosures [Line Items]

Increase (decrease) in revenue requirement

$ 27

East Ohio | Ohio Regulation | Pipeline Infrastructure Replacement Program

Public Utilities General Disclosures [Line Items]

Proposed revenue requirement

$ 190

Percentage replacement of pipeline system

25.00%

Total estimated cost

$ 1,600

$ 202

East Ohio | Ohio Regulation | Automated Meter Reading Program

Public Utilities General Disclosures [Line Items]

Proposed revenue requirement

$ 4

Number of customers with automated meter reading technology | customer

1.2

East Ohio | Ohio Regulation | CEP Program

Public Utilities General Disclosures [Line Items]

Proposed revenue requirement

$ 83

Total estimated cost

$ 723

Percentage to defer expenses on capital investments

6.50%

Questar Gas | Utah And Wyoming Regulation

Public Utilities General Disclosures [Line Items]

LNG storage facility, liquefaction rate per day | ft³

8.2

Number of days to make prudency determination

180 days

Cove Point | Federal Energy Regulatory Commission

Public Utilities General Disclosures [Line Items]

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

$ 24

Regulatory Matters - Summary of

Regulatory Matters - Summary of Additional Virginia Power Electric Transmission Projects Approved and Applied (Detail) - Virginia Electric and Power Company - Virginia Regulation $ in Millions	3 Months Ended
	Mar. 31, 2019USD ($)kVmi
Partial Rebuild of Overhead Transmission Lines in Alleghany County, Virginia and Covington, Virginia
Public Utilities General Disclosures [Line Items]
Application Date	2018-08
Approval Date	2019-04
Type of Line | kV	138
Miles of Lines | mi	5
Cost Estimate (millions) | $	$ 15
Rebuild and Operate Between Lanexa and Northern Neck in Virginia
Public Utilities General Disclosures [Line Items]
Application Date	2018-06
Approval Date	2019-02
Type of Line | kV	230
Miles of Lines | mi	3
Cost Estimate (millions) | $	$ 30
Rebuild and Operate Glebe Substation and Relocate and Operate in Arlington County, Virginia and City of Alexandria, Virginia Existing Overhead Line Underground
Public Utilities General Disclosures [Line Items]
Application Date	2019-03
Type of Line | kV	230
Cost Estimate (millions) | $	$ 125
Rebuild and Operate Glebe Substation and Relocate and Operate in Arlington County, Virginia and City of Alexandria, Virginia Existing Overhead Line Underground | Maximum [Member]
Public Utilities General Disclosures [Line Items]
Miles of Lines | mi	1
Rebuild and Operate Between Valley, Virginia and Mt. Storm, West Virginia
Public Utilities General Disclosures [Line Items]
Application Date	2019-04
Type of Line | kV	500
Miles of Lines | mi	65
Cost Estimate (millions) | $	$ 290

Leases (Lease Assets and Liabil

Leases (Lease Assets and Liabilities Recorded in Consolidated Balance Sheets) (Detail) - USD ($) $ in Millions		Mar. 31, 2019	Jan. 01, 2019
Lessee Lease Disclosure [Line Items]
Operating lease assets		$ 486	$ 504
Finance lease assets	[1]	79
Total lease assets		565
Operating lease liabilities - current	[2]	62
Finance lease liabilities - current	[3]	14
Total lease liabilities - current		76
Operating lease liabilities - noncurrent		418
Finance lease liabilities - noncurrent	[4]	66
Total lease liabilities - noncurrent		484
Total lease liabilities		560
Virginia Electric and Power Company
Lessee Lease Disclosure [Line Items]
Operating lease assets		202	209
Finance lease assets	[1]	8
Total lease assets		210
Operating lease liabilities - current	[2]	33
Finance lease liabilities - current	[3]	2
Total lease liabilities - current		35
Operating lease liabilities - noncurrent		169
Finance lease liabilities - noncurrent	[4]	5
Total lease liabilities - noncurrent		174
Total lease liabilities		209
Dominion Energy Gas Holdings, LLC
Lessee Lease Disclosure [Line Items]
Operating lease assets		41	$ 64
Finance lease assets	[1]	1
Total lease assets	[5]	42
Operating lease liabilities - current	[2]	6
Finance lease liabilities - current	[3]	0
Total lease liabilities - current		6
Operating lease liabilities - noncurrent		33
Finance lease liabilities - noncurrent	[4]	2
Total lease liabilities - noncurrent		35
Total lease liabilities	[5]	$ 41
[1]	Included in property, plant and equipment in the Companies’ Consolidated Balance Sheets, net of $29 million, $2 million and $1 million of accumulated amortization at Dominion Energy, Virginia Power and Dominion Energy Gas, respectively, at March 31, 2019.
[2]	Included in other current liabilities in the Companies' Consolidated Balance Sheets.
[3]	Included in securities due within one year in the Companies' Consolidated Balance Sheets.
[4]	Included in long-term debt in the Companies' Consolidated Balance Sheets.
[5]	Excludes $25 million of lease assets recorded in assets of discontinued operations and $25 million of lease liabilities recorded in liabilities of discontinued operations.

Leases (Lease Assets and Liab_2

Leases (Lease Assets and Liabilities Recorded in Consolidated Balance Sheets) (Parenthetical) (Detail) $ in Millions	Mar. 31, 2019USD ($)
Lessee Lease Disclosure [Line Items]
Finance lease assets, accumulated amortization	$ 29
Virginia Electric and Power Company
Lessee Lease Disclosure [Line Items]
Finance lease assets, accumulated amortization	2
Dominion Energy Gas Holdings, LLC
Lessee Lease Disclosure [Line Items]
Finance lease assets, accumulated amortization	1
Operating lease assets	25
Operating Lease Liabilities	$ 25

Leases (Narrative) (Detail)

Leases (Narrative) (Detail) - USD ($) $ in Millions	1 Months Ended	3 Months Ended
	Jul. 31, 2016	Mar. 31, 2019	Dec. 31, 2018	[1]
Leases Disclosure [Line Items]
Property, plant and equipment, net		$ 66,567	$ 54,560
Accumulated depreciation, depletion and amortization		26,918	$ 22,018
Option to extend, existence, finance lease	true
Corporate office | Agreement with Lessor to Construct and Lease Corporate Office Property
Leases Disclosure [Line Items]
Requested cash draws from lessor to fund project costs		$ 310
Required percentage payment of funded amount under certain events of default	89.90%
Required percentage payment for specific full recourse events	100.00%
Option to extend, description, finance lease		At the end of the initial lease term, Dominion Energy can (i) extend the term of the lease for an additional five years, subject to the approval of the participants, at current market terms, (ii) purchase the property for an amount equal to the project costs or, (iii) subject to certain terms and conditions, sell the property on behalf of the lessor to a third party using commercially reasonable efforts to obtain the highest cash purchase price for the property.
Lease term	5 years
Extension term of lease	5 years
Required percentage payment to lessor for difference between project costs and sales proceeds	87.00%
Lessor | 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	$ 365
Power Purchase Arrangements
Leases Disclosure [Line Items]
Property, plant and equipment, net		$ 2,800
Accumulated depreciation, depletion and amortization		294
Rental revenue		29
Depreciation expense		$ 23
[1]	Dominion Energy’s Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.

Leases (Summary of Total Lease

Leases (Summary of Total Lease Cost) (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2019USD ($)
Finance lease cost:
Finance lease cost, Amortization	$ 3
Finance lease cost, Interest	1
Operating lease cost	25
Short-term lease cost	6
Variable lease cost	2
Total lease cost	37
Virginia Electric and Power Company
Finance lease cost:
Operating lease cost	10
Short-term lease cost	2
Variable lease cost	1
Total lease cost	13
Dominion Energy Gas Holdings, LLC
Finance lease cost:
Operating lease cost	2
Short-term lease cost	1
Total lease cost	$ 3

Leases (Cash Paid for Amounts I

Leases (Cash Paid for Amounts Included in Measurement of Lease Liabilities) (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2019USD ($)
Lessee Lease Disclosure [Line Items]
Operating cash flows for finance leases	$ 1
Operating cash flows for operating leases	32
Financing cash flows for finance leases	3
Virginia Electric and Power Company
Lessee Lease Disclosure [Line Items]
Operating cash flows for operating leases	13
Dominion Energy Gas Holdings, LLC
Lessee Lease Disclosure [Line Items]
Operating cash flows for operating leases	$ 3

Leases (Weighted Average Remain

Leases (Weighted Average Remaining Lease Term and Weighted Discounted Rate for Finance and Operating Leases) (Detail)	Mar. 31, 2019
Lessee Lease Disclosure [Line Items]
Weighted average remaining lease term - finance leases	7 years
Weighted average remaining lease term - operating leases	21 years
Weighted average discount rate - finance leases	4.66%
Weighted average discount rate - operating leases	4.61%
Virginia Electric and Power Company
Lessee Lease Disclosure [Line Items]
Weighted average remaining lease term - finance leases	6 years
Weighted average remaining lease term - operating leases	16 years
Weighted average discount rate - finance leases	4.99%
Weighted average discount rate - operating leases	4.47%
Dominion Energy Gas Holdings, LLC
Lessee Lease Disclosure [Line Items]
Weighted average remaining lease term - finance leases	6 years
Weighted average remaining lease term - operating leases	9 years
Weighted average discount rate - finance leases	5.04%
Weighted average discount rate - operating leases	4.44%

Leases (Scheduled Maturities of

Leases (Scheduled Maturities of Lease Liabilities) (Detail) $ in Millions	Mar. 31, 2019USD ($)
Maturity of Operating Lease Liabilities
Maturity of Lease Liabilities, Operating, 2019	$ 54
Maturity of Lease Liabilities, Operating, 2020	66
Maturity of Lease Liabilities, Operating, 2021	58
Maturity of Lease Liabilities, Operating, 2022	49
Maturity of Lease Liabilities, Operating, 2023	39
Maturity of Lease Liabilities, Operating, After 2023	532
Maturity of Lease Liabilities, Operating, Total undiscounted lease payments	798
Present value adjustment, Operating	(318)
Present value of lease liabilities, Operating	480
Maturity of Finance Lease Liabilities
Maturity of Lease Liabilities, Finance, 2019	14
Maturity of Lease Liabilities, Finance, 2020	16
Maturity of Lease Liabilities, Finance, 2021	14
Maturity of Lease Liabilities, Finance, 2022	12
Maturity of Lease Liabilities, Finance, 2023	9
Maturity of Lease Liabilities, Finance, After 2023	33
Maturity of Lease Liabilities, Finance, Total undiscounted lease payments	98
Present value adjustment, Finance	(18)
Present value of lease liabilities, Finance	80
Virginia Electric and Power Company
Maturity of Operating Lease Liabilities
Maturity of Lease Liabilities, Operating, 2019	30
Maturity of Lease Liabilities, Operating, 2020	36
Maturity of Lease Liabilities, Operating, 2021	31
Maturity of Lease Liabilities, Operating, 2022	24
Maturity of Lease Liabilities, Operating, 2023	19
Maturity of Lease Liabilities, Operating, After 2023	162
Maturity of Lease Liabilities, Operating, Total undiscounted lease payments	302
Present value adjustment, Operating	(100)
Present value of lease liabilities, Operating	202
Maturity of Finance Lease Liabilities
Maturity of Lease Liabilities, Finance, 2019	2
Maturity of Lease Liabilities, Finance, 2020	1
Maturity of Lease Liabilities, Finance, 2021	1
Maturity of Lease Liabilities, Finance, 2022	1
Maturity of Lease Liabilities, Finance, 2023	1
Maturity of Lease Liabilities, Finance, After 2023	2
Maturity of Lease Liabilities, Finance, Total undiscounted lease payments	8
Present value adjustment, Finance	(1)
Present value of lease liabilities, Finance	7
Dominion Energy Gas Holdings, LLC
Maturity of Operating Lease Liabilities
Maturity of Lease Liabilities, Operating, 2019	11	[1]
Maturity of Lease Liabilities, Operating, 2020	13	[1]
Maturity of Lease Liabilities, Operating, 2021	11	[1]
Maturity of Lease Liabilities, Operating, 2022	9	[1]
Maturity of Lease Liabilities, Operating, 2023	6	[1]
Maturity of Lease Liabilities, Operating, After 2023	24	[1]
Maturity of Lease Liabilities, Operating, Total undiscounted lease payments	74	[1]
Present value adjustment, Operating	(13)	[1]
Present value of lease liabilities, Operating	61	[1]
Maturity of Finance Lease Liabilities
Maturity of Lease Liabilities, Finance, 2019	1	[1]
Maturity of Lease Liabilities, Finance, 2020	1	[1]
Maturity of Lease Liabilities, Finance, 2021	1	[1]
Maturity of Lease Liabilities, Finance, 2022	1	[1]
Maturity of Lease Liabilities, Finance, After 2023	1	[1]
Maturity of Lease Liabilities, Finance, Total undiscounted lease payments	5	[1]
Present value adjustment, Finance	(1)	[1]
Present value of lease liabilities, Finance	$ 4	[1]
[1]	Includes amounts reflected in discontinued operations.

Variable Interest Entities (Nar

Variable Interest Entities (Narrative) (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2019USD ($)MWGenerator	Mar. 31, 2018USD ($)	Mar. 30, 2019USD ($)	Dec. 31, 2018USD ($)
Virginia Electric and Power Company
Variable Interest Entity [Line Items]
Securities due within one year	$ 392			$ 350	[1]
Long term debt	11,288			11,321	[1]
Payables to affiliates	104			209	[1]
Dominion Energy Gas Holdings, LLC
Variable Interest Entity [Line Items]
Securities due within one year	450			748	[2]
Long term debt	7,023			7,022	[2]
Payables to affiliates	106			124	[2]
Dominion Energy Gas Holdings, LLC | DECGS
Variable Interest Entity [Line Items]
Shared services purchased	4	$ 4
Payables to affiliates			$ 5
Dominion Energy Gas Holdings, LLC | DEQPS
Variable Interest Entity [Line Items]
Shared services purchased	8	7
Payables to affiliates				6
Variable Interest Entity, Primary Beneficiary | SBL Holdco
Variable Interest Entity [Line Items]
Securities due within one year	29			31
Long term debt	$ 301			299
Variable Interest Entity (VIE) or Potential VIE, Information Unavailability | Virginia Electric and Power Company
Variable Interest Entity [Line Items]
Long term capacity contract non utility generators (generators) | Generator	1
Aggregate generation capacity from long-term power and capacity contracts (MW) | MW	218
Remaining purchase commitments	$ 159
Payment for electric capacity	13	13
Payment for electric energy	1	5
Variable Interest Entity, Not Primary Beneficiary | Virginia Electric and Power Company | DES
Variable Interest Entity [Line Items]
Shared services purchased	89	89
Payables to affiliates	22			107
Variable Interest Entity, Not Primary Beneficiary | Dominion Energy Gas Holdings, LLC | DES
Variable Interest Entity [Line Items]
Shared services purchased	$ 28	$ 28
Payables to affiliates			8	43
Variable Interest Entity, Not Primary Beneficiary | Dominion Energy Gas Holdings, LLC | DES | Discontinued Operations
Variable Interest Entity [Line Items]
Variable interest entity, current liabilities			$ 5	$ 18
[1]	Virginia Power’s Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.
[2]	Dominion Energy Gas’ Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.

Significant Financing Transac_3

Significant Financing Transactions (Commercial Paper, Bank Loans and Letters of Credit Outstanding) (Detail)	Mar. 31, 2019USD ($)
Line of Credit Facility [Line Items]
Facility Limit	$ 6,000,000,000	[1]
Outstanding Commercial Paper	2,393,000,000	[1]
Outstanding Letters of Credit	90,000,000	[1]
Facility Capacity Available	3,517,000,000	[1]
Virginia Electric and Power Company
Line of Credit Facility [Line Items]
Facility Limit	6,000,000,000	[2]
Outstanding Commercial Paper	595,000,000	[2]
Outstanding Letters of Credit	16,000,000	[2]
Dominion Energy Gas Holdings, LLC
Line of Credit Facility [Line Items]
Facility Limit	1,500,000,000	[3]
Outstanding Commercial Paper	280,000,000	[3]
Outstanding Letters of Credit	$ 0	[3]
[1]	This credit facility matures in March 2023 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.
[2]	The full amount of the facility is available to Virginia Power, less any amounts outstanding to co-borrowers Dominion Energy, Dominion Energy Gas, Questar Gas and DESC. The sub-limit for Virginia Power is set within the facility limit but can be changed at the option of the borrowers under the credit facility multiple times per year. At March 31, 2019, the sub-limit for Virginia Power was $1.5 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 March 2023 and 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.
[3]	A maximum of $1.5 billion of the facility is available to Dominion Energy Gas, assuming adequate capacity is available after giving effect to uses by co-borrowers Dominion Energy, Virginia Power, Questar Gas and DESC. The sub-limit for Dominion Energy Gas is set within the facility limit but can be changed at the option of the borrowers under the credit facility multiple times per year. At March 31, 2019, the sub-limit for Dominion Energy Gas was $750 million. If Dominion Energy Gas 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 March 2023 and can be used to support bank borrowings and the issuance of commercial paper, as well as to support up to $1.5 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) (Parenthetical) (Detail)	Mar. 31, 2019USD ($)
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]
Dominion Energy Gas Holdings, LLC
Line of Credit Facility [Line Items]
Facility Limit	1,500,000,000	[3]
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
Letter of Credit | Dominion Energy Gas Holdings, LLC
Line of Credit Facility [Line Items]
Facility Limit	1,500,000,000
Line of Credit | Dominion Energy Gas Holdings, LLC
Line of Credit Facility [Line Items]
Facility Limit	$ 750,000,000
[1]	This credit facility matures in March 2023 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.
[2]	The full amount of the facility is available to Virginia Power, less any amounts outstanding to co-borrowers Dominion Energy, Dominion Energy Gas, Questar Gas and DESC. The sub-limit for Virginia Power is set within the facility limit but can be changed at the option of the borrowers under the credit facility multiple times per year. At March 31, 2019, the sub-limit for Virginia Power was $1.5 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 March 2023 and 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.
[3]	A maximum of $1.5 billion of the facility is available to Dominion Energy Gas, assuming adequate capacity is available after giving effect to uses by co-borrowers Dominion Energy, Virginia Power, Questar Gas and DESC. The sub-limit for Dominion Energy Gas is set within the facility limit but can be changed at the option of the borrowers under the credit facility multiple times per year. At March 31, 2019, the sub-limit for Dominion Energy Gas was $750 million. If Dominion Energy Gas 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 March 2023 and can be used to support bank borrowings and the issuance of commercial paper, as well as to support up to $1.5 billion (or the sub-limit, whichever is less) of letters of credit.

Significant Financing Transac_5

Significant Financing Transactions (Narrative) (Detail) - USD ($)		1 Months Ended			3 Months Ended
		Mar. 31, 2019	Feb. 28, 2019	Jan. 31, 2019	Mar. 31, 2019	Mar. 31, 2018	Apr. 30, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Facility Limit	[1]	$ 6,000,000,000			$ 6,000,000,000
Short-term debt		2,412,000,000			2,412,000,000			$ 334,000,000	[2]
Repayment of long-term debt					$ 2,217,000,000	$ 1,180,000,000
Tender offer expiration description					Both DESC tender offers and the SCANA tender offer expired in the first quarter of 2019.
Shares of common stock issued in acquisition, value					$ 6,818,000,000
Amount of income taxes recognized in equity primarily attributable to establishing additional regulatory liabilities					(40,000,000)
Cash proceeds received from common stock					247,000,000	581,000,000
Issuance of common stock value					$ 247,000,000	580,000,000
Shelf Registration For Sale Of Common Stock Through At Market Program
Debt Instrument [Line Items]
Issuance of common stock (in shares)					2,100,000
Cash proceeds received from common stock					$ 154,000,000
Fees and commissions paid					2,000,000
Issuance of common stock value					645,000,000
Dominion Energy Midstream Partners, LP
Debt Instrument [Line Items]
Repayment of long-term debt			$ 73,000,000
Shares of common stock issued in acquisition				22,500,000
Shares of common stock issued in acquisition, value				$ 1,600,000,000
Right to receive conversion of common stock				0.2492
Gain or loss recognized in equity transaction				$ 0
Amount of income taxes recognized in equity primarily attributable to establishing additional regulatory liabilities				$ 40,000,000
Virginia Electric and Power Company
Debt Instrument [Line Items]
Facility Limit	[3]	6,000,000,000			6,000,000,000
Short-term debt		595,000,000			$ 595,000,000			$ 314,000,000	[4]
Repayment of long-term debt						$ 350,000,000
Issuance of common stock (in shares)					0	0
DESC
Debt Instrument [Line Items]
Line of credit sub-limit		500,000,000			$ 500,000,000
Repurchase of first mortgage bonds					1,200,000,000
SCANA
Debt Instrument [Line Items]
Repurchase of medium term notes		300,000,000
Shares of common stock issued in acquisition				95,600,000
Shares of common stock issued in acquisition, value				$ 6,800,000,000
Credit Facilities, Maturing in December 2017 with 1 year Automatic Renewals through 2023 | SBL Holdco
Debt Instrument [Line Items]
Facility Limit		30,000,000			$ 30,000,000
Automatic renewal period					1 year
Short-term debt		0			$ 0
Credit Facilities, Maturing in May 2018 with 1 year Automatic Renewals through 2024 | Dominion Solar Projects III, Inc
Debt Instrument [Line Items]
Facility Limit		25,000,000			$ 25,000,000
Automatic renewal period					1 year
Short-term debt		0			$ 0
Variable Rate Term Loan | Dominion Energy Midstream Partners, LP
Debt Instrument [Line Items]
Repayment of long-term debt			300,000,000
Senior Notes, Due in 2049 | Senior Notes
Debt Instrument [Line Items]
Total Long-term Debt		$ 400,000,000			$ 400,000,000
Interest rate percentage		4.60%			4.60%
Debt maturity year		2049
Senior Notes, Due in 2028 | Senior Notes
Debt Instrument [Line Items]
Total Long-term Debt		$ 200,000,000			$ 200,000,000
Interest rate percentage		4.25%			4.25%
Debt maturity year		2028
Letter of Credit
Debt Instrument [Line Items]
Facility Limit		$ 2,000,000,000			$ 2,000,000,000
Letter of Credit | Virginia Electric and Power Company
Debt Instrument [Line Items]
Facility Limit		2,000,000,000			2,000,000,000
Letter of Credit | DESC
Debt Instrument [Line Items]
Terminated credit facility		700,000,000
Letter of Credit | Credit Facility, Maturing in June 2020
Debt Instrument [Line Items]
Facility Limit		21,000,000			21,000,000
Credit facility, outstanding amount		$ 21,000,000			$ 21,000,000
Line of credit facility, termination date					Jun. 30, 2020
Revolving Credit Facility | Dominion Energy Midstream Partners, LP
Debt Instrument [Line Items]
Terminated credit facility			$ 500,000,000
Economic Development Authority of the County of Chesterfield Pollution Control Refunding Revenue Bonds, Series 2009A, due in 2023 | Virginia Electric and Power Company
Debt Instrument [Line Items]
Interest rate percentage							5.00%
Debt, amount redeemed							$ 40,000,000
[1]	This credit facility matures in March 2023 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.
[2]	Dominion Energy’s Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.
[3]	The full amount of the facility is available to Virginia Power, less any amounts outstanding to co-borrowers Dominion Energy, Dominion Energy Gas, Questar Gas and DESC. The sub-limit for Virginia Power is set within the facility limit but can be changed at the option of the borrowers under the credit facility multiple times per year. At March 31, 2019, the sub-limit for Virginia Power was $1.5 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 March 2023 and 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.
[4]	Virginia Power’s Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.

Commitments and Contingencies_2

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

1 Months Ended

3 Months Ended

12 Months Ended

Mar. 31, 2019USD ($)siteMMcf

Aug. 31, 2018USD ($)

Jul. 31, 2018USD ($)

Jun. 30, 2018USD ($)

Sep. 30, 2017Petition

Jun. 30, 2017

Apr. 30, 2017stationPetition

Aug. 31, 2016T

Apr. 30, 2015Facility

Mar. 31, 2019USD ($)FacilitysiteIndicatorgalMMcf

Mar. 31, 2018USD ($)

Dec. 31, 2018USD ($)GasFiredUnit

Oct. 31, 2017USD ($)

Oct. 31, 2015ppb

Loss Contingencies [Line Items]

Environmental Remediation Expense

$ (113)

Impairment of assets and other charges

835

$ 1

Liabilities recorded

$ 72,455

72,455

$ 55,866

[1]

Regulatory liability

11,411

11,411

7,196

DESC

Loss Contingencies [Line Items]

Liabilities recorded

$ 20

$ 20

Equity method investment, ownership percentage

55.00%

55.00%

Contesting amount for filed liens in Fairfield country

$ 285

DESC | SCDOR [Member]

Loss Contingencies [Line Items]

Proportional share with NND project

100.00%

Proposed assessment amount from audit

$ 410

DESC | SOUTH CAROLINA

Loss Contingencies [Line Items]

Amount claimed by plaintiffs in legal matter

$ 75

Proportional share with NND project

55.00%

Minimum | DESC Ratepayer Case

Loss Contingencies [Line Items]

Proceeds from sale of property

60

Virginia Electric and Power Company

Loss Contingencies [Line Items]

Environmental Remediation Expense

$ (113)

Impairment of assets and other charges

546

Liabilities recorded

$ 26,330

26,330

23,833

[2]

Regulatory liability

5,089

$ 5,089

4,946

Virginia Electric and Power Company | Cost of Landfills and Beneficial Reuse

Loss Contingencies [Line Items]

ARO incurred

2,400

Virginia Electric and Power Company | Increase In Property Plant And Equipment

Loss Contingencies [Line Items]

ARO incurred

1,300

Virginia Electric and Power Company | Future Ash Pond and Landfill Closure Costs

Loss Contingencies [Line Items]

ARO incurred

202

Virginia Electric and Power Company | Other operations and maintenance

Loss Contingencies [Line Items]

ARO incurred

113

ARO incurred, after tax

$ 84

Virginia Electric and Power Company | Minimum

Loss Contingencies [Line Items]

Legislation requires for coal combustion residual | MMcf

6.8

6.8

Virginia Electric and Power Company | Maximum [Member]

Loss Contingencies [Line Items]

Proposed revenue requirement

$ 225

Dominion Energy Gas Holdings, LLC

Loss Contingencies [Line Items]

Liabilities recorded

18,156

$ 18,156

17,886

[3]

Regulatory liability

845

845

789

SCANA | DESC Ratepayer Case

Loss Contingencies [Line Items]

Escrow account

2,000

Credit in future electric rate relief

2,000

Cash payment

115

Impairment of assets and other charges

169

Asset impairment charges after tax

126

SCANA | Maximum [Member] | DESC Ratepayer Case

Loss Contingencies [Line Items]

Proceeds from sale of property

$ 85

Federal Energy Regulatory Commission | Virginia Electric and Power Company | Pending Litigation [Member]

Loss Contingencies [Line Items]

Regulatory liability

$ 14

$ 14

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

Loss Contingencies [Line Items]

Compliance date

2023-12

CWA | EPA | 2015 Effluent Limitations Guidelines Rule for Steam Electric Power Generating Category

Loss Contingencies [Line Items]

Compliance date

2020-11

CCR | EPA

Loss Contingencies [Line Items]

Number of petition agreed for reconsideration | Petition

2

Unfavorable Regulatory Action | EPA

Loss Contingencies [Line Items]

Significant emission rate per rear CO2 equivalent | T

75,000

Electric generating stations with water withdrawals per day | gal

125

Unfavorable Regulatory Action | MATS | EPA | Virginia Electric and Power Company

Loss Contingencies [Line Items]

Number of effective days to operate power station units

90 days

Unfavorable Regulatory Action | Ozone Standards | EPA

Loss Contingencies [Line Items]

Standard emission level prior to revision | ppb

75

Revised emission standard level | ppb

70

Unfavorable Regulatory Action | Ozone Standards | EPA | Minimum

Loss Contingencies [Line Items]

Estimated compliance costs

$ 25

Unfavorable Regulatory Action | Ozone Standards | EPA | Maximum [Member]

Loss Contingencies [Line Items]

Estimated compliance costs

$ 35

Unfavorable Regulatory Action | Ozone Standards | EPA | Virginia Electric and Power Company

Loss Contingencies [Line Items]

Number of natural gas fired units to place at facility | GasFiredUnit

2

Unfavorable Regulatory Action | CWA

Loss Contingencies [Line Items]

Number of facilities that may be subject to final regulations | Facility

14

Unfavorable Regulatory Action | CWA | Virginia Electric and Power Company

Loss Contingencies [Line Items]

Number of mandatory facility-specific factors | Indicator

5

Number of optional facility-specific factors | Indicator

6

Number of facilities that may be subject to final regulations | Facility

8

Unfavorable Regulatory Action | CWA | 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

Unfavorable Regulatory Action | Coal Tar and Other Potentially Harmful Materials | EPA

Loss Contingencies [Line Items]

Number of former manufactured gas plant sites | site

22

22

Unfavorable Regulatory Action | Coal Tar and Other Potentially Harmful Materials | EPA | Former Gas Plant Site with Post Closure Groundwater Monitoring Program

Loss Contingencies [Line Items]

Number of former sites | site

1

Unfavorable Regulatory Action | Coal Tar and Other Potentially Harmful Materials | EPA | Virginia Electric and Power Company

Loss Contingencies [Line Items]

Number of former manufactured gas plant sites | site

3

3

Unfavorable Regulatory Action | Coal Tar and Other Potentially Harmful Materials | EPA | Virginia Electric and Power Company | Former Gas Plant Site with Post Closure Groundwater Monitoring Program

Loss Contingencies [Line Items]

Estimated compliance costs

18

Unfavorable Regulatory Action | Coal Tar and Other Potentially Harmful Materials | EPA | Virginia Electric and Power Company | Former Gas Plant Site with Post Closure Groundwater Monitoring Program | Other operations and maintenance

Loss Contingencies [Line Items]

Environmental Remediation Expense

16

Environmental Remediation Expense, net of tax

$ 12

Unfavorable Regulatory Action | Coal Tar and Other Potentially Harmful Materials | EPA | Dominion Energy Gas Holdings, LLC

Loss Contingencies [Line Items]

Number of former manufactured gas plant sites | site

12

12

Unfavorable Regulatory Action | Coal Tar and Other Potentially Harmful Materials | EPA | SCANA

Loss Contingencies [Line Items]

Estimated compliance costs

$ 10

$ 10

Number of sites under investigation, remediation and monitoring | site

4

Number of sites with an updated remediation work plan | site

1

Updated remediation work plan, cost increase

$ 8

Unfavorable Regulatory Action | CCR | EPA | Environmental Protection Agency Final Rule Regulating Management of CCRs | Facilities Subject to Coal Combustion Residual Final Rule

Loss Contingencies [Line Items]

Number of facilities with CCR | Facility

11

Unfavorable Regulatory Action | CCR | EPA | Virginia Electric and Power Company | Environmental Protection Agency Final Rule Regulating Management of CCRs | Facilities Subject to Coal Combustion Residual Final Rule

Loss Contingencies [Line Items]

Number of facilities with CCR | Facility

8

Number of stations | station

4

[1]

Dominion Energy’s Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.

[2]

Virginia Power’s Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.

[3]

Dominion Energy Gas’ Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.

Commitments and Contingencies_3

Commitments and Contingencies (Guarantees, Surety Bonds and Letters of Credit) (Detail) - USD ($)		3 Months Ended
		Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018
Guarantee Obligations [Line Items]
Facility Limit	[1]		$ 6,000,000,000
Maximum Exposure	[2]		5,499,000,000
Commodity Transactions
Guarantee Obligations [Line Items]
Maximum Exposure	[3]		2,334,000,000
Nuclear Obligations
Guarantee Obligations [Line Items]
Maximum Exposure	[4]		180,000,000
Cove Point
Guarantee Obligations [Line Items]
Maximum Exposure	[5]		1,900,000,000
Virginia Electric and Power Company
Guarantee Obligations [Line Items]
Facility Limit	[6]		6,000,000,000
Dominion Energy Gas Holdings, LLC
Guarantee Obligations [Line Items]
Facility Limit	[7]		1,500,000,000
Financial Guarantee [Member] | Equity Method Investee [Member]
Guarantee Obligations [Line Items]
Maximum Exposure			48,000,000
Financial Guarantee [Member] | Atlantic Coast Pipeline | Revolving Credit Facility
Guarantee Obligations [Line Items]
Facility Limit			$ 3,400,000,000
Maximum potential loss exposure, limited guarantee percentage			48.00%
Guarantee liability			$ 19,000,000	$ 21,000,000
Guarantee recorded amount			1,600,000,000
Additional amount borrowed		$ 47,000,000
Solar
Guarantee Obligations [Line Items]
Maximum Exposure	[8]		659,000,000
Other
Guarantee Obligations [Line Items]
Maximum Exposure	[9]		426,000,000
Surety Bond [Member]
Guarantee Obligations [Line Items]
Maximum Exposure			175,000,000
Surety Bond [Member] | Virginia Electric and Power Company
Guarantee Obligations [Line Items]
Maximum Exposure			72,000,000
Surety Bond [Member] | Dominion Energy Gas Holdings, LLC
Guarantee Obligations [Line Items]
Maximum Exposure			34,000,000
Financial Standby Letter of Credit [Member]
Guarantee Obligations [Line Items]
Maximum Exposure			$ 90,000,000
[1]	This credit facility matures in March 2023 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.
[2]	Excludes Dominion Energy’s guarantee for the construction of the new corporate office property discussed in Note 22 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2018, as updated in Current Report on Form 8-K, filed November 18, 2019.
[3]	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.
[4]	Guarantees related to certain DGI subsidiaries regarding all aspects of running a nuclear facility.
[5]	Guarantees related to Cove Point, in support of terminal services, transportation and construction. Cove Point has two guarantees that have no maximum limit and, therefore, are not included in this amount.
[6]	The full amount of the facility is available to Virginia Power, less any amounts outstanding to co-borrowers Dominion Energy, Dominion Energy Gas, Questar Gas and DESC. The sub-limit for Virginia Power is set within the facility limit but can be changed at the option of the borrowers under the credit facility multiple times per year. At March 31, 2019, the sub-limit for Virginia Power was $1.5 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 March 2023 and 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.
[7]	A maximum of $1.5 billion of the facility is available to Dominion Energy Gas, assuming adequate capacity is available after giving effect to uses by co-borrowers Dominion Energy, Virginia Power, Questar Gas and DESC. The sub-limit for Dominion Energy Gas is set within the facility limit but can be changed at the option of the borrowers under the credit facility multiple times per year. At March 31, 2019, the sub-limit for Dominion Energy Gas was $750 million. If Dominion Energy Gas 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 March 2023 and can be used to support bank borrowings and the issuance of commercial paper, as well as to support up to $1.5 billion (or the sub-limit, whichever is less) of letters of credit.
[8]	Includes guarantees to facilitate the development of solar projects. Also includes guarantees entered into by DGI on behalf of certain subsidiaries to facilitate the acquisition and development of solar projects.
[9]	Guarantees related to other miscellaneous contractual obligations such as leases, environmental obligations, construction projects and insurance programs. Due to the uncertainty of workers’ compensation claims, the parental guarantee has no stated limit.

Credit Risk (Narrative) (Detail

Credit Risk (Narrative) (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2019USD ($)counterparty	Mar. 31, 2018	Dec. 31, 2018USD ($)
Concentration Risk and Guarantor Obligations [Line Items]
Gross credit exposure	$ 184
Additional collateral to be posted if the credit related contingent features were triggered	1		$ 1
Virginia Electric and Power Company
Concentration Risk and Guarantor Obligations [Line Items]
Gross credit exposure	$ 74
Customer Concentration Risk | Export Customers | Sales Revenue, Net | Dominion Energy Gas Holdings, LLC
Concentration Risk and Guarantor Obligations [Line Items]
Concentration risk, percentage (percentage)	32.00%	6.00%
Customer Concentration Risk | Largest Customer | Sales Revenue, Net | Dominion Energy Gas Holdings, LLC
Concentration Risk and Guarantor Obligations [Line Items]
Concentration risk, percentage (percentage)	17.00%	4.00%
Credit Concentration Risk
Concentration Risk and Guarantor Obligations [Line Items]
Number of counterparties | counterparty	0
Amount of exposure for single counterparty	$ 36
Credit Concentration Risk | Dominion Energy Gas Holdings, LLC
Concentration Risk and Guarantor Obligations [Line Items]
Number of counterparties | counterparty	0
Credit Concentration Risk | Wholesale Customers | Sales Revenue, Net | Virginia Electric and Power Company
Concentration Risk and Guarantor Obligations [Line Items]
Amount of exposure for single counterparty	$ 29
Credit Concentration Risk | Investment Grade | Investment Grade Counterparty
Concentration Risk and Guarantor Obligations [Line Items]
Concentration risk, percentage (percentage)	63.00%
Credit Concentration Risk | Investment Grade | Investment Grade Counterparty | Virginia Electric and Power Company
Concentration Risk and Guarantor Obligations [Line Items]
Concentration risk, percentage (percentage)	23.00%

Related-Party Transactions (Nar

Related-Party Transactions (Narrative) (Detail) - USD ($) shares in Millions		3 Months Ended		12 Months Ended
		Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Related Party Transaction [Line Items]
Facility Limit	[1]	$ 6,000,000,000
Revenues	[2]	3,858,000,000	$ 3,466,000,000
Derivative Asset		173,000,000			$ 294,000,000
Derivative Liabilities		369,000,000			279,000,000
Virginia Electric and Power Company
Related Party Transaction [Line Items]
Due From Related Parties Current		59,000,000			101,000,000	[3]
Facility Limit	[4]	6,000,000,000
Revenues	[5]	1,965,000,000	$ 1,748,000,000
Derivative Asset		66,000,000			93,000,000
Derivative Liabilities		190,000,000			103,000,000
Short term demand note		24,000,000			224,000,000	[3]
Outstanding borrowings, net of repayments, under money pool for non-regulated subsidiaries		$ 0			0
Issuance of common stock (in shares)		0	0
Virginia Electric and Power Company | Pension Benefits | Amounts Associated with the Dominion Pension Plan
Related Party Transaction [Line Items]
Long Term Debt		$ 661,000,000			632,000,000
Amounts due to Dominion, noncurrent		661,000,000			632,000,000
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]
Due From Affiliate Noncurrent		265,000,000			254,000,000
Amounts due from Dominion, noncurrent		265,000,000			254,000,000
Virginia Electric and Power Company | Affiliated Entity
Related Party Transaction [Line Items]
Derivative Asset		6,000,000			26,000,000
Derivative Liabilities		6,000,000			10,000,000
Virginia Electric and Power Company | Principal Owner
Related Party Transaction [Line Items]
Short term demand note		24,000,000			224,000,000
Dominion Energy Gas Holdings, LLC
Related Party Transaction [Line Items]
Due From Affiliate Noncurrent		395,000,000
Due From Related Parties Current		315,000,000			319,000,000	[6]
Facility Limit	[7]	1,500,000,000
Revenues	[8]	566,000,000	$ 389,000,000
Derivative Asset		13,000,000			31,000,000
Derivative Liabilities		42,000,000			19,000,000
Amounts due from Dominion, noncurrent		395,000,000
Short term demand note		2,952,000,000			3,097,000,000	[6]
Dominion Energy Gas Holdings, LLC | Revolving Credit Facility | IRCA
Related Party Transaction [Line Items]
Interest charges		1,000,000
Short term demand note		47,000,000			218,000,000
Dominion Energy Gas Holdings, LLC | Pension Benefits | Amounts Associated with the Dominion Retiree Health and Welfare Plan
Related Party Transaction [Line Items]
Due From Affiliate Noncurrent		322,000,000			319,000,000
Amounts due from Dominion, noncurrent		322,000,000			319,000,000
Dominion Energy Gas Holdings, LLC | Medical Coverage for Local retirees | Amounts Associated with the Dominion Retiree Health and Welfare Plan
Related Party Transaction [Line Items]
Due From Affiliate Noncurrent		14,000,000			13,000,000
Amounts due from Dominion, noncurrent		14,000,000			13,000,000
Intersegment Eliminations [Member]
Related Party Transaction [Line Items]
Revenues		134,000,000	46,000,000
Commercial Paper | Dominion Energy Midstream Partners, LP
Related Party Transaction [Line Items]
Facility Limit		$ 400,000,000
Debt Instrument Interest Rate Stated Percentage		3.50%
Long Term Debt		$ 395,000,000
Interest On Debt		2,000,000
Amounts due to Dominion, noncurrent		395,000,000
Commercial Paper | Dominion Energy Gas Holdings, LLC
Related Party Transaction [Line Items]
Interest income		49,000,000	19,000,000
East Ohio | Dominion Energy Gas Holdings, LLC | Revolving Credit Facility
Related Party Transaction [Line Items]
Due From Affiliate Noncurrent		601,000,000
Amounts due from Dominion, noncurrent		601,000,000
DGP | Dominion Energy Gas Holdings, LLC | Revolving Credit Facility
Related Party Transaction [Line Items]
Due From Affiliate Noncurrent					704,000,000
Amounts due from Dominion, noncurrent					704,000,000
DCPI | IRCA
Related Party Transaction [Line Items]
Short term demand note		2,900,000,000			2,900,000,000
DCPI | Dominion Energy Gas Holdings, LLC | Revolving Credit Facility | IRCA
Related Party Transaction [Line Items]
Interest charges		29,000,000	22,000,000
DMLPHCII | Dominion Energy Gas Holdings, LLC | Revolving Credit Facility | IRCA
Related Party Transaction [Line Items]
Interest charges			$ 1,000,000	$ 1,000,000
Short term demand note		22,000,000			22,000,000
Unbilled Revenues | Dominion Energy Gas Holdings, LLC
Related Party Transaction [Line Items]
Due From Related Parties Current		13,000,000			7,000,000
Discontinued Operations | Dominion Energy Gas Holdings, LLC | Pension Benefits | Amounts Associated with the Dominion Pension Plan
Related Party Transaction [Line Items]
Due From Affiliate Noncurrent		447,000,000			442,000,000
Amounts due from Dominion, noncurrent		447,000,000			442,000,000
Discontinued Operations | Dominion Energy Gas Holdings, LLC | Medical Coverage for Local retirees | Amounts Associated with the Dominion Retiree Health and Welfare Plan
Related Party Transaction [Line Items]
Due From Affiliate Noncurrent		5,000,000			4,000,000
Amounts due from Dominion, noncurrent		$ 5,000,000			$ 4,000,000
[1]	This credit facility matures in March 2023 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.
[2]	See Note 10 for amounts attributable to related parties.
[3]	Virginia Power’s Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.
[4]	The full amount of the facility is available to Virginia Power, less any amounts outstanding to co-borrowers Dominion Energy, Dominion Energy Gas, Questar Gas and DESC. The sub-limit for Virginia Power is set within the facility limit but can be changed at the option of the borrowers under the credit facility multiple times per year. At March 31, 2019, the sub-limit for Virginia Power was $1.5 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 March 2023 and 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.
[5]	See Note 19 for amounts attributable to affiliates.
[6]	Dominion Energy Gas’ Consolidated Balance Sheet at December 31, 2018 has been derived from the audited Consolidated Balance Sheet at that date.
[7]	A maximum of $1.5 billion of the facility is available to Dominion Energy Gas, assuming adequate capacity is available after giving effect to uses by co-borrowers Dominion Energy, Virginia Power, Questar Gas and DESC. The sub-limit for Dominion Energy Gas is set within the facility limit but can be changed at the option of the borrowers under the credit facility multiple times per year. At March 31, 2019, the sub-limit for Dominion Energy Gas was $750 million. If Dominion Energy Gas 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 March 2023 and can be used to support bank borrowings and the issuance of commercial paper, as well as to support up to $1.5 billion (or the sub-limit, whichever is less) of letters of credit.
[8]	See Note 19 for amounts attributable to related parties.

Related-Party Transactions (Det

Related-Party Transactions (Detail) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Virginia Electric and Power Company
Related Party Transaction [Line Items]
Commodity purchases from affiliates		$ 272	$ 398
Services provided by affiliates	[1]	119	120
Virginia Electric and Power Company | Affiliated Entity
Related Party Transaction [Line Items]
Services provided to related parties		6	6
Dominion Energy Gas Holdings, LLC
Related Party Transaction [Line Items]
Services provided by affiliates	[2]	45	44
Services provided to related parties	[3]	45	59
Other receivables	[4]	12		$ 13
Dominion Energy Gas Holdings, LLC | Affiliated Entity
Related Party Transaction [Line Items]
Services provided to related parties	[4]	67	$ 46
Imbalances receivable from affiliates		1		16
Imbalances payable to affiliates	[5]	$ 1		$ 4
[1]	Includes capitalized expenditures of $33 million and $37 million for the three months ended March 31, 2019 and 2018, respectively.
[2]	Includes capitalized expenditures of $6 million and $12 million for the three months ended March 31, 2019 and 2018, respectively.
[3]	Amounts primarily attributable to Atlantic Coast Pipeline, a related-party VIE.
[4]	Represents amounts due from Atlantic Coast Pipeline, a related-party VIE.
[5]	Amounts are presented in other current liabilities in Dominion Energy Gas’ Consolidated Balance Sheets.

Related-Party Transactions (Par

Related-Party Transactions (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Related Party Transaction [Line Items]
Capital expenditures	$ 1,002	$ 1,103
Virginia Electric and Power Company
Related Party Transaction [Line Items]
Capital expenditures	563	570
Virginia Electric and Power Company | Services provided by affiliates | Affiliated Entity
Related Party Transaction [Line Items]
Capital expenditures	33	37
Dominion Energy Gas Holdings, LLC
Related Party Transaction [Line Items]
Capital expenditures	150	291
Dominion Energy Gas Holdings, LLC | Services provided by affiliates | Affiliated Entity
Related Party Transaction [Line Items]
Capital expenditures	$ 6	$ 12

Employee Benefit Plans (Net Per

Employee Benefit Plans (Net Periodic Benefit Cost (Credit)) (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 40	$ 39
Interest cost	101	84
Expected return on plan assets	(177)	(165)
Amortization of prior service credit	0	0
Amortization of net actuarial loss	39	48
Settlements	2	0
Net periodic benefit cost (credit)	5	6
Pension Benefits | Dominion Energy Gas Holdings, LLC
Defined Benefit Plan Disclosure [Line Items]
Service cost	4	4
Interest cost	8	7
Expected return on plan assets	(39)	(37)
Amortization of prior service credit	0	0
Amortization of net actuarial loss	5	5
Net periodic benefit cost (credit)	(22)	(21)
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	7	7
Interest cost	17	14
Expected return on plan assets	(33)	(36)
Amortization of prior service credit	(13)	(13)
Amortization of net actuarial loss	4	3
Settlements	0	0
Net periodic benefit cost (credit)	(18)	(25)
Other Postretirement Benefits | Dominion Energy Gas Holdings, LLC
Defined Benefit Plan Disclosure [Line Items]
Service cost	1	1
Interest cost	3	3
Expected return on plan assets	(7)	(8)
Amortization of prior service credit	(1)	(1)
Amortization of net actuarial loss	1	1
Net periodic benefit cost (credit)	$ (3)	$ (4)

Employee Benefit Plans (Narrati

Employee Benefit Plans (Narrative) (Detail)	3 Months Ended
	Mar. 31, 2019USD ($)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Contributions to defined benefit pension plans and OPEB plans	$ 0
Dominion Energy Gas Holdings, LLC
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Contributions to defined benefit pension plans and OPEB plans	0
Expected contribution to voluntary employees' beneficiary association for the remainder of 2019	12,000,000
Pension Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Expected contribution to voluntary employees' beneficiary association for the remainder of 2019	21,000,000
Other Postretirement Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Expected contribution to voluntary employees' beneficiary association for the remainder of 2019	$ 12,000,000

Operating Segments (Narrative)

Operating Segments (Narrative) (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Segment Reporting Information [Line Items]
Other comprehensive income (loss), net of tax	$ (31)	$ 132
SCANA
Segment Reporting Information [Line Items]
Income tax related to regulatory assets acquired	264
Income tax related to regulatory assets acquired, after tax	198
Virginia Electric and Power Company
Segment Reporting Information [Line Items]
Other comprehensive income (loss), net of tax	(5)	5
Operating Segments
Segment Reporting Information [Line Items]
After- tax net expenses	1,400	218
Operating Segments | Virginia Electric and Power Company
Segment Reporting Information [Line Items]
After- tax net expenses	324	189
Operating revenue recorded charge	29
Operating revenue recorded charge, after tax	22
Operating Segments | Virginia Electric and Power Company | Virginia Legislation
Segment Reporting Information [Line Items]
One-time rate credit amount		215
One-time rate credit amount after tax		160
Corporate and Other | Operating Segments
Segment Reporting Information [Line Items]
After- tax net expenses	1,600	238
Corporate and Other | Operating Segments | Virginia Electric and Power Company
Segment Reporting Information [Line Items]
After- tax net expenses	344	197
Southeast Energy
Segment Reporting Information [Line Items]
Charge for refund of amounts from customers	1
Charge for refund of amounts from customers, after tax	756
Litigation settlement expense	169
Litigation settlement expense, after tax	127
Merger and integration related costs	106
Merger and integration-related costs, after tax	81
Charge for property, plant and equipment acquired but committed to forgo recovery	105
Charge for property, plant and equipment acquired but committed to forgo recovery, after tax	79
Power Generation | Virginia Electric and Power Company
Segment Reporting Information [Line Items]
Asset retirement obligations	369
Asset retirement obligations, after tax	275
Power Generation | Virginia Electric and Power Company | Virginia Legislation
Segment Reporting Information [Line Items]
Benefit from revision of future closure costs	113
Benefit from revision of future closure costs, after tax	84
Power Generation | Operating Segments
Segment Reporting Information [Line Items]
Gain loss on investments held in nuclear decommissioning trust funds	253	43
Other comprehensive income (loss), net of tax	189	32
Power Generation | Operating Segments | Virginia Electric and Power Company
Segment Reporting Information [Line Items]
Asset retirement obligations	369
Asset retirement obligations, after tax	275
Operating revenue recorded charge, after tax	19
Power Generation | Operating Segments | Virginia Electric and Power Company | Virginia Legislation
Segment Reporting Information [Line Items]
Benefit from revision of future closure costs	113
Benefit from revision of future closure costs, after tax	84
Charge associated with one-time rate credits of certain amounts to utility customers, after tax		109
Power Delivery | Virginia Electric and Power Company
Segment Reporting Information [Line Items]
Asset retirement obligations	160
Asset retirement obligations, after tax	119
Power Delivery | Operating Segments | Virginia Electric and Power Company
Segment Reporting Information [Line Items]
Asset retirement obligations	160
Asset retirement obligations, after tax	119
Operating revenue recorded charge, after tax	$ 3
Charge for storm damage and service restoration		31
Charge for storm damage and service restoration, after tax		23
Power Delivery | Operating Segments | Virginia Electric and Power Company | Virginia Legislation
Segment Reporting Information [Line Items]
Charge associated with one-time rate credits of certain amounts to utility customers, after tax		$ 51

Operating Segments (Schedule of

Operating Segments (Schedule of Segment Reporting Information, by Segment) (Detail) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Segment Reporting Information [Line Items]
Operating revenue	[1]	$ 3,858	$ 3,466
Net income		(680)	503
Virginia Electric and Power Company
Segment Reporting Information [Line Items]
Operating revenue	[2]	1,965	1,748
Net income		20	184
Dominion Energy Gas Holdings, LLC
Segment Reporting Information [Line Items]
Net Income from discontinued operations		54	56
Operating revenue	[3]	566	389
Net income		190	180
Intersegment revenue
Segment Reporting Information [Line Items]
Operating revenue		134	46
Operating Segments | Dominion Energy Gas Holdings, LLC
Segment Reporting Information [Line Items]
Net Income from discontinued operations		54	56
Operating revenue		566	389
Net income		190	180
Adjustments/Eliminations
Segment Reporting Information [Line Items]
Operating revenue			28
Eliminations
Segment Reporting Information [Line Items]
Operating revenue		(220)	(161)
Power Delivery
Segment Reporting Information [Line Items]
Operating revenue		598	563
Net income		155	156
Power Delivery | Intersegment revenue
Segment Reporting Information [Line Items]
Operating revenue		6	6
Power Delivery | Operating Segments
Segment Reporting Information [Line Items]
Operating revenue		604	569
Power Delivery | Operating Segments | Virginia Electric and Power Company
Segment Reporting Information [Line Items]
Operating revenue		598	563
Net income		154	154
Power Generation
Segment Reporting Information [Line Items]
Operating revenue		1,745	1,860
Net income		308	348
Power Generation | Intersegment revenue
Segment Reporting Information [Line Items]
Operating revenue		4	2
Power Generation | Operating Segments
Segment Reporting Information [Line Items]
Operating revenue		1,749	1,862
Power Generation | Operating Segments | Virginia Electric and Power Company
Segment Reporting Information [Line Items]
Operating revenue		1,396	1,400
Net income		204	222
Gas Infrastructure
Segment Reporting Information [Line Items]
Operating revenue		1,373	1,222
Net income		359	327
Gas Infrastructure | Intersegment revenue
Segment Reporting Information [Line Items]
Operating revenue		26	6
Gas Infrastructure | Operating Segments
Segment Reporting Information [Line Items]
Operating revenue		1,399	1,228
Gas Infrastructure | Operating Segments | Dominion Energy Gas Holdings, LLC
Segment Reporting Information [Line Items]
Operating revenue		566	389
Net income		138	123
Southeast Energy
Segment Reporting Information [Line Items]
Operating revenue		1,182
Net income		132
Southeast Energy | Operating Segments
Segment Reporting Information [Line Items]
Operating revenue		1,182
Corporate and Other
Segment Reporting Information [Line Items]
Operating revenue		(1,040)	(207)
Net income		(1,634)	(328)
Corporate and Other | Intersegment revenue
Segment Reporting Information [Line Items]
Operating revenue		184	175
Corporate and Other | Operating Segments
Segment Reporting Information [Line Items]
Operating revenue		(856)	(32)
Corporate and Other | Operating Segments | Virginia Electric and Power Company
Segment Reporting Information [Line Items]
Operating revenue		(29)	(215)
Net income		(338)	(192)
Corporate and Other | Operating Segments | Dominion Energy Gas Holdings, LLC
Segment Reporting Information [Line Items]
Net Income from discontinued operations		54	56
Net income		$ 52	$ 57
[1]	See Note 10 for amounts attributable to related parties.
[2]	See Note 19 for amounts attributable to affiliates.
[3]	See Note 19 for amounts attributable to related parties.