Employee Benefit Plans (Narrative) (Details) (USD $)	3 Months Ended			12 Months Ended
	Dec. 31, 2013		Jun. 30, 2013	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Actual return on plan assets				$ 959,000,000		$ 743,000,000
Expected return on pension and other postretirement plan assets				554,000,000		509,000,000
Federal subsidy received				5,000,000
Decrease in other postretirement benefit obligations due to federal subsidy				20,000,000
Reduction in accumulated postretirement benefit obligation	220,000,000			220,000,000
Reduction in net periodic benefit cost for next year	8,000,000		36,000,000
Period for reduction in net periodic benefit cost				5 years
Accumulated benefit obligation	5,100,000,000			5,100,000,000		5,500,000,000
Cumulative required contribution period (years)				10 years
Expected contribution to voluntary employees beneficiary association				12,000,000
Percentage coverage of US stock market				7.00%
Employer contributions				40,000,000		40,000,000		38,000,000
U.S. equity:
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Defined benefit plan, actual plan asset allocations	28.00%			28.00%
Non-U.S. equity:
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Defined benefit plan, actual plan asset allocations	18.00%			18.00%
Fixed Income
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Defined benefit plan, actual plan asset allocations	33.00%			33.00%
Real estate:
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Defined benefit plan, actual plan asset allocations	3.00%			3.00%
Other alternative investments
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Defined benefit plan, actual plan asset allocations	18.00%			18.00%
Virginia Electric and Power Company
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Employer contributions				16,000,000		15,000,000		14,000,000
Net periodic benefit cost				96,000,000		72,000,000		50,000,000
Virginia Electric and Power Company | Dominion Retiree Health And Welfare Plan
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Net periodic benefit cost				5,000,000		13,000,000		23,000,000
Minimum
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Expected reduction in net periodic benefit cost				40,000,000
Investment grade bonds average weighted maturity period				4 years
Maximum
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Expected reduction in net periodic benefit cost				60,000,000
Investment grade bonds average weighted maturity period				12 years
Pension Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Expected return on pension and other postretirement plan assets				462,000,000		430,000,000		440,000,000
Medicare Part D reimbursement			354,000,000
Reduction in accumulated postretirement benefit obligation	(22,000,000)	[1]		(22,000,000)	[1]	0	[1]	0	[1]
Discount rate			4.80%
Net periodic benefit cost				106,000,000		89,000,000		25,000,000
Other Postretirement Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Expected return on pension and other postretirement plan assets				92,000,000		79,000,000		79,000,000
Medicare Part D reimbursement			78,000,000
Reduction in accumulated postretirement benefit obligation	(7,000,000)	[1]		(7,000,000)	[1]	(2,000,000)	[1]	(1,000,000)	[1]
Discount rate	4.80%		4.70%	4.80%
Net periodic benefit cost				$ 2,000,000		$ 33,000,000		$ 63,000,000

[1] 2013 amount relates primarily to the decommissioning of Kewaunee. 2012 amount relates to the sale of Salem Harbor.