Derivatives and Hedge Accounting Activities (Gains and Losses on Derivatives in Cash Flow Hedging Relationships) (Details) (Cash Flow Hedges, USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion)	$ (230)	[1]	$ (144)	[1]
Amount of Gain (Loss) Reclassified from AOCI to Income	(260)		(124)
Increase (Decrease) in Derivatives Subject to Regulatory Treatment	(21)	[2]	23	[2]
Commodity
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion)	(183)	[1]	(157)	[1]
Amount of Gain (Loss) Reclassified from AOCI to Income	(257)		(121)
Increase (Decrease) in Derivatives Subject to Regulatory Treatment	2	[2]	7	[2]
Commodity | Operating revenue
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Reclassified from AOCI to Income	(269)		(84)
Commodity | Purchased gas
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Reclassified from AOCI to Income	(1)		(34)
Commodity | Electric fuel and other energy-related purchases
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Reclassified from AOCI to Income	13		(3)
Interest rate
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion)	(47)	[1],[3]	13	[1],[3]
Amount of Gain (Loss) Reclassified from AOCI to Income	(3)	[3]	(3)	[3]
Increase (Decrease) in Derivatives Subject to Regulatory Treatment	(23)	[2],[3]	16	[2],[3]
Virginia Electric and Power Company
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion)	3	[4]	3	[4]
Amount of Gain (Loss) Reclassified from AOCI to Income	5		0
Increase (Decrease) in Derivatives Subject to Regulatory Treatment	(21)	[5]	23	[5]
Virginia Electric and Power Company | Commodity
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion)	6	[4]	1	[4]
Amount of Gain (Loss) Reclassified from AOCI to Income	5		0
Increase (Decrease) in Derivatives Subject to Regulatory Treatment	2	[5]	7	[5]
Virginia Electric and Power Company | Commodity | Electric fuel and other energy-related purchases
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Reclassified from AOCI to Income	5		0
Virginia Electric and Power Company | Interest rate
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion)	(3)	[4],[6]	2	[4],[6]
Amount of Gain (Loss) Reclassified from AOCI to Income	0	[6]	0	[6]
Increase (Decrease) in Derivatives Subject to Regulatory Treatment	$ (23)	[5],[6]	$ 16	[5],[6]

[1] Amounts deferred into AOCI have no associated effect in Dominion’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’s Consolidated Statements of Income.

[3] Amounts recorded in Dominion’s Consolidated Statements of Income are classified in interest and related charges.

[4] Amounts deferred into AOCI have no associated effect in Virginia Power’s Consolidated Statements of Income.

[5] 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.

[6] Amounts recorded in Virginia Power’s Consolidated Statements of Income are classified in interest and related charges.