Regulatory Assets and Liabilities (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013
Regulatory Assets and Liablities [Line Items]
Deferred cost of fuel used in electric generation	$ 180	[1]	$ 0	[1]
Deferred rate adjustment clause costs	105	[2]	89	[2]
Nuclear fuel outages	48	[3]	0	[3]
Unrecovered gas costs	17	[4]	50	[4]
Derivatives	5	[5]	16	[5]
Other	47		62
Regulatory assets current	402	[6]	217	[6]
Unrecognized pension and other postretirement benefit costs	675	[7]	706	[7]
Deferred rate adjustment clause costs	246	[2]	287	[2]
Income taxes recoverable through future rates	139	[8]	155	[8]
Derivatives	59		16
Deferred cost of fuel used in electric generation	19	[1]	1	[1]
Other	99		63
Regulatory assets-non-current	1,237		1,228	[9]
Total regulatory assets	1,639		1,445
PIPP	76	[10]	76	[10]
Other	52		52
Regulatory liabilities current	128	[11]	128	[11]
Provision for future cost of removal and AROs	1,064	[12]	1,028	[12]
Decommissioning trust	772	[13]	693	[13]
Deferred cost of fuel used in electric generation	28	[1]	90	[1]
Other	172		190
Regulatory liabilities-non-current	2,036		2,001	[9]
Total regulatory liabilities	2,164		2,129
Virginia Electric and Power Company
Regulatory Assets and Liablities [Line Items]
Deferred cost of fuel used in electric generation	180	[1]	0	[1]
Deferred rate adjustment clause costs	96	[2]	62	[2]
Nuclear fuel outages	48	[3]	0	[3]
Derivatives	5	[5]	16	[5]
Other	44		50
Regulatory assets current	373		128	[14]
Deferred rate adjustment clause costs	177	[2]	227	[2]
Deferred cost of fuel used in electric generation	(19)	[1]	(1)	[1]
Income taxes recoverable through future rates	107	[8]	124	[8]
Derivatives	59	[5]	16	[5]
Other	60		49
Regulatory assets-non-current	422		417	[14]
Total regulatory assets	795		545
Other	47		41
Regulatory liabilities current	47	[11]	41	[11]
Provision for future cost of removal	839	[12]	807	[12]
Decommissioning trust	772	[13]	693	[13]
Deferred cost of fuel used in electric generation	28	[1]	90	[1]
Other	7		7
Regulatory liabilities-non-current	1,646		1,597	[14]
Total regulatory liabilities	1,693		1,638
Dominion Gas Holdings, LLC
Regulatory Assets and Liablities [Line Items]
Deferred rate adjustment clause costs	9	[2]	27	[2]
Unrecovered gas costs	7	[4]	40	[4]
Bad debt tracker	0	[15]	11	[15]
Other	1		1
Regulatory assets current	17	[6]	79	[6]
Unrecognized pension and other postretirement benefit costs	188	[7]	194	[7]
Deferred rate adjustment clause costs	69	[2]	59	[2]
Income taxes recoverable through future rates	24	[8]	24	[8]
Other postretirement benefit costs	0	[16]	7	[16]
Other	32		1
Regulatory assets-non-current	313		285	[17]
Total regulatory assets	330		364
PIPP	76	[10]	76	[10]
Other	2		3
Regulatory liabilities current	78	[11]	79	[11]
Provision for future cost of removal and AROs	178	[12]	177	[12]
Unrecognized pension and other postretirement benefit costs	0	[7]	18	[7]
Other	18		8
Regulatory liabilities-non-current	196	[18]	203	[18]
Total regulatory liabilities	$ 274		$ 282

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

[2] Reflects deferrals under the electric transmission FERC formula rate and the deferral of costs associated with certain current and prospective rider projects for Virginia Power. Reflects deferrals of costs associated with certain current and prospective rider projects for Dominion Gas. See Note 12 for more information.

[3] Legislation enacted in Virginia in April 2014 requires Virginia Power to defer operation and maintenance costs incurred in connection with the refueling of any nuclear-powered generating plant. These deferred costs will be amortized over the refueling cycle, not to exceed 18 months.

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

[5] 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.

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

[7] 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.

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

[10] Under PIPP, eligible customers can make reduced payments 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.

[11] Current regulatory liabilities are presented in other current liabilities in the Companies' Consolidated Balance Sheets.

[12] 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.

[13] 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.

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

[15] Represents East Ohio's deferrals for the UEX Rider which are recovered through rates which are filed annually. Most of East Ohio's bad debt expense is recovered either through the UEX Rider or the PIPP Rider.

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

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

[18] Noncurrent regulatory liabilities are presented in other deferred credits and other liabilities in Dominion Gas' Consolidated Balance Sheets.