Regulatory Assets and Liabilities (Regulatory Assets and Liabilities) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Regulatory Assets And Liabilities [Line Items]
Deferred rate adjustment clause costs	$ 89	[1]	$ 55	[1]
Unrecovered gas costs	50	[2]	59	[2]
Virginia sales taxes	46	[3]	37	[3]
Derivatives	16	[4]	0	[4]
Plant retirement	1	[5]	25	[5]
Other	15		27
Regulatory assets-current	217	[6]	203	[6]
Unrecognized pension and other postretirement benefit costs	706	[7]	1,210	[7]
Deferred rate adjustment clause costs	287	[1]	173	[1]
Income taxes recoverable through future rates	155	[8]	140	[8]
Derivatives	16	[4]	105	[4]
Other postretirement benefit costs	12	[9]	21	[9]
Plant retirement	10	[5]	11	[5]
Other	42		57
Regulatory assets-non-current	1,228		1,717
Total regulatory assets	1,445		1,920
PIPP, regulatory liabilities-current	76	[10]	100	[10]
Deferred cost of fuel used in electric generation	24	[11]	7	[11]
Other	28		29
Regulatory liabilities-current	128	[12]	136	[12]
Provision for future cost of removal and AROs	1,028		985
Decommissioning trust	693		501
Unrecognized pension and other postretirement benefit costs	174	[7]	2	[7]
Deferred cost of fuel used in electric generation	90	[11]	13	[11]
Other	16		13
Regulatory liabilities-non-current	2,001		1,514
Total regulatory liabilities	2,129		1,650
Virginia Electric and Power Company
Regulatory Assets And Liabilities [Line Items]
Deferred rate adjustment clause costs	62	[1]	51	[1]
Virginia sales taxes	46	[3]	37	[3]
Derivatives	16	[4]	0	[4]
Plant retirement	1	[5]	25	[5]
Other	3		6
Regulatory assets-current	128		119
Deferred rate adjustment clause costs	227	[1]	127	[1]
Income taxes recoverable through future rates	124	[8]	110	[8]
Derivatives	16	[4]	105	[4]
Plant retirement	10	[5]	11	[5]
Other	40		43
Regulatory assets-non-current	417		396
Total regulatory assets	545		515
Deferred cost of fuel used in electric generation	24	[11]	7	[11]
Other	17		25
Regulatory liabilities-current	41		32
Provision for future cost of removal	807	[13]	763	[13]
Decommissioning trust	693	[14]	501	[14]
Deferred cost of fuel used in electric generation	90	[11]	14	[11]
Other	7		7
Regulatory liabilities-non-current	1,597		1,285
Total regulatory liabilities	$ 1,638		$ 1,317

[1] Reflects deferrals under the electric transmission FERC formula rate and the deferral of costs associated with certain current and prospective rider projects. See Note 13 for more information.

[2] Reflects unrecovered gas costs at Dominion's regulated gas operations, which are recovered through annual filings with the applicable regulatory authority.

[3] Amounts to be recovered through an annual surcharge to reimburse Virginia Power for incremental sales taxes being incurred due to the repeal of the public service company sales tax exemption in Virginia

[4] As discussed under Derivative Instruments in Note 2, for jurisdictions subject to cost-based rate regulation, changes in the fair value of derivative instruments result in the recognition of regulatory assets or regulatory liabilities as they are expected to be recovered from or refunded to customers.

[5] Reflects costs anticipated to be recovered in North Carolina base rates for certain coal units expected to be retired.

[6] Current regulatory assets are presented in other current assets in Dominion's Consolidated Balance Sheets.

[7] Represents unrecognized pension and other postretirement benefit costs expected to be recovered through future rates generally over the expected remaining service period of plan participants by certain of Dominion's rate-regulated subsidiaries.

[8] Amounts to be recovered through future rates to pay income taxes that become payable when rate revenue is provided to recover AFUDC-equity and depreciation of property, plant and equipment for which deferred income taxes were not recognized for ratemaking purposes, including amounts attributable to tax rate changes.

[9] Primarily reflects costs recognized in excess of amounts included in regulated rates charged by Dominion's regulated gas operations before rates were updated to reflect a change in accounting method for other postretirement benefit costs.

[10] Under PIPP, eligible customers can receive energy assistance based on their ability to pay. The difference between the customer's total bill and the PIPP plan amount is deferred and collected or returned annually under the PIPP rider according to East Ohio tariff provisions. See Note 13 for more information regarding PIPP.

[11] Primarily reflects deferred fuel expenses for the Virginia jurisdiction of Virginia Power's generation operations. For 2013, amount includes approximately $5 million related to DOE claims. See Note 13 for more information.

[12] Current regulatory liabilities are presented in other current liabilities in Dominion's Consolidated Balance Sheets.

[13] Rates charged to customers by the Companies' 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.

[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 ARO.