Consolidated Statements Equity - USD ($) shares in Millions, $ in Millions		Total	IPO	Total Common Shareholders' Equity	Total Common Shareholders' Equity IPO	Common Stock	Retained Earnings		Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interests	Noncontrolling Interests IPO	Virginia Electric and Power Company	Virginia Electric and Power Company Common Stock	Virginia Electric and Power Company Other Paid-In Capital	Virginia Electric and Power Company Retained Earnings	Virginia Electric and Power Company Accumulated Other Comprehensive Income (Loss)	Dominion Gas Holdings, LLC	Dominion Gas Holdings, LLC Membership Interests	Dominion Gas Holdings, LLC Accumulated Other Comprehensive Income (Loss)
Beginning Balance (in shares) at Dec. 31, 2012						576							275
Beginning Balance, value at Dec. 31, 2012		$ 10,625		$ 10,568		$ 5,655	$ 5,790		$ (877)	$ 57		$ 9,233	$ 5,738	$ 1,113	$ 2,357	$ 25
Beginning Balance, value at Dec. 31, 2012																	$ 3,276	$ 3,416	$ (140)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income including noncontrolling interests		1,720		1,714			1,714			6		1,121
Net income attributable to Dominion		1,697										1,138			1,138		461	461
Equity contribution from parent																	6	6
Distributions																	(398)	(398)
Issuance of stock-employee and direct stock purchase plans (in shares)						4
Issuance of stock-employee and direct stock purchase plans		278		278		$ 278
Stock awards and stock options exercised (net of change in unearned compensation), value		12		12		$ 12
Other stock issuances (in shares)	[1]					1
Other stock issuances, value	[1]	7		7		$ 7
Present value of stock purchase contract payments related to RSNs	[2]	(156)		(156)		(154)	(2)
Fairless lease buyout		(72)		(15)		$ (15)				(57)
Dividends		(1,325)		(1,319)			(1,319)	[3]		(6)		(596)			(596)
Other comprehensive income (loss), net of tax		553		553					553			23				23	82		82
Beginning Balance, value at Dec. 31, 2013																	3,427	3,485	(58)
Ending Balance (shares) at Dec. 31, 2013						581							275
Beginning Balance, value at Dec. 31, 2013		11,642		11,642		$ 5,783	6,183		(324)	0		9,798	$ 5,738	1,113	2,899	48
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income including noncontrolling interests		1,326		1,323			1,323			3		845
Dominion Midstream's acquisition of interest in Iroquois and Issuance of Dominion Midstream common units, net of offering costs			$ 392		$ 0						$ 392
Net income attributable to Dominion		1,310										858			858		512	512
Equity contribution from parent																	1	1
Distributions																	(346)	(346)
Issuance of stock-employee and direct stock purchase plans (in shares)						3
Issuance of stock-employee and direct stock purchase plans		205		205		$ 205
Stock awards and stock options exercised (net of change in unearned compensation), value		14		14		$ 14
Other stock issuances (in shares)	[4]					1
Other stock issuances, value	[4]	14		14		$ 14
Present value of stock purchase contract payments related to RSNs	[2]	(143)		(143)		(143)
Dividends		(1,411)		(1,411)			(1,411)	[3]				(603)			(603)
Other comprehensive income (loss), net of tax		(92)		(92)					(92)			2				2	(28)		(28)
Other		10		3		$ 3				7
Beginning Balance, value at Dec. 31, 2014																	3,566	3,652	(86)
Ending Balance (shares) at Dec. 31, 2014						585							275
Beginning Balance, value at Dec. 31, 2014		11,957		11,555		$ 5,876	6,095		(416)	402		10,055	$ 5,738	1,113	3,154	50
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income including noncontrolling interests		1,923		1,899			1,899			24		1,087
Dominion Midstream's acquisition of interest in Iroquois and Issuance of Dominion Midstream common units, net of offering costs		216		0						216
Acquisition of Four Brothers and Three Cedars		47		0						47
Contributions from SunEdison to Four Brothers and Three Cedars		103		0						103
Sale of interest in merchant solar projects		205		26		26				179
Purchase of Dominion Midstream common units		(25)		(6)		$ (6)				(19)
Net income attributable to Dominion		1,899										1,087			1,087		457	457
Distributions																	(692)	(692)
Issuance of stock-employee and direct stock purchase plans (in shares)						11
Issuance of stock-employee and direct stock purchase plans		786		786		$ 786
Stock awards and stock options exercised (net of change in unearned compensation), value		13		13		13
Dividends		(1,536)		(1,536)			(1,536)					(491)			(491)
Dominion Midstream distributions		(16)		0						(16)
Other comprehensive income (loss), net of tax		(58)		(58)					(58)			(10)				(10)	(13)		(13)
Other		(13)		(15)		$ (15)				2
Beginning Balance, value at Dec. 31, 2015																	$ 3,318	$ 3,417	$ (99)
Ending Balance (shares) at Dec. 31, 2015						596							275
Beginning Balance, value at Dec. 31, 2015		$ 13,602		$ 12,664		$ 6,680	$ 6,458		$ (474)	$ 938		$ 10,641	$ 5,738	$ 1,113	$ 3,750	$ 40

[1] Primarily includes $28 million in shares issued in excess of principal amounts related to converted securities, net of reclassification from other paid-in capital. See Note 17 for further information on convertible securities.

[2] See Note 17 for further information.

[3] Includes subsidiary preferred dividends related to noncontrolling interests of $13 million and $17 million in 2014 and 2013, respectively.

[4] Contains shares issued in excess of principal amounts related to converted securities. See Note 17 for further information on convertible securities.