Regulatory Assets and Liabilities (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014		Dec. 31, 2013
Regulatory Assets and Liablities [Line Items]
Deferred rate adjustment clause costs	$ 71	[1]	$ 89	[1]
Unrecovered gas cost	24	[2]	50	[2]
Derivatives	5	[3]	16	[3]
Other	47		62
Regulatory assets current	147	[4]	217	[4]
Unrecognized pension and other postretirement benefit costs	695	[5]	706	[5]
Deferred rate adjustment clause costs	263	[1]	287	[1]
Deferred cost of fuel used in electric generation	249	[4]	1	[4]
Income taxes recoverable through future rates	156	[6]	155	[6]
Derivatives	44	[3]	16	[3]
Other	84		63
Regulatory assets-non-current	1,491		1,228	[7]
Total regulatory assets	1,638		1,445
PIPP	87	[8]	76	[8]
Other	73		52
Regulatory liabilities current	160	[9]	128	[9]
Provision for future cost of removal and AROs	1,040	[10]	1,028	[10]
Decommissioning trust	712	[11]	693	[11]
Deferred cost of fuel used in electric generation	6	[4]	90	[4]
Other	189		190
Regulatory liabilities-non-current	1,947		2,001	[7]
Total regulatory liabilities	2,107		2,129
Virginia Electric and Power Company
Regulatory Assets and Liablities [Line Items]
Deferred rate adjustment clause costs	65	[1]	62	[1]
Derivatives	5	[3]	16	[3]
Other	46		50
Regulatory assets current	116	[12]	128	[12]
Deferred rate adjustment clause costs	198	[1]	227	[1]
Deferred cost of fuel used in electric generation	249	[4]	1	[4]
Income taxes recoverable through future rates	126	[6]	124	[6]
Derivatives	44	[3]	16	[3]
Other	47		49
Regulatory assets-non-current	664		417	[13]
Total regulatory assets	780		545
Other	58		41
Regulatory liabilities current	58	[9]	41	[9]
Decommissioning trust	712	[11]	693	[11]
Deferred cost of fuel used in electric generation	6	[4]	90	[4]
Provision for future cost of removal	818	[10]	807	[10]
Other	6		7
Regulatory liabilities-non-current	1,542		1,597	[13]
Total regulatory liabilities	$ 1,600		$ 1,638

[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 12 for more information.

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

[3] 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.

[4] Primarily reflects deferred fuel expenses for the Virginia jurisdiction of Virginia Power's generation operations.

[5] Represents unrecognized pension and other postretirement employee 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.

[6] 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.

[7] Dominion’s Consolidated Balance Sheet at December 31, 2013 has been derived from the audited Consolidated Financial Statements at that date.

[8] 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.

[9] Current regulatory liabilities are presented in other current liabilities in Dominion's and Virginia Power's Consolidated Balance Sheets.

[10] 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.

[11] 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.

[12] Current regulatory assets are presented in other current assets in Dominion's and Virginia Power's Consolidated Balance Sheets.

[13] Virginia Power’s Consolidated Balance Sheet at December 31, 2013 has been derived from the audited Consolidated Financial Statements at that date.