Fair Value Measurements (Fair Value, Option, Quantitative Disclosures) (Details) (USD $)																12 Months Ended																																										9 Months Ended		12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2013 Level 3	Dec. 31, 2013 Level 3 Gas Physical and Financial Forwards and Futures:		Dec. 31, 2013 Level 3 Gas Physical and Financial Options:		Dec. 31, 2013 Level 3 FTRs Physical and Financial Forwards and Futures:		Dec. 31, 2013 Level 3 Liquids Physical and Financial Forwards and Futures:		Dec. 31, 2013 Level 3 Electricity Physical and Financial Forwards and Futures:	Dec. 31, 2013 Level 3 Electricity Full Requirements Contracts:	Dec. 31, 2013 Level 3 Fair Value, Option, Quantitative Disclosures, Assets Minimum Gas Physical and Financial Forwards and Futures:		Dec. 31, 2013 Level 3 Fair Value, Option, Quantitative Disclosures, Assets Minimum Gas Physical and Financial Options:		Dec. 31, 2013 Level 3 Fair Value, Option, Quantitative Disclosures, Assets Minimum FTRs Physical and Financial Forwards and Futures:		Dec. 31, 2013 Level 3 Fair Value, Option, Quantitative Disclosures, Assets Minimum Liquids Physical and Financial Forwards and Futures:		Dec. 31, 2013 Level 3 Fair Value, Option, Quantitative Disclosures, Assets Minimum Electricity Full Requirements Contracts:		Dec. 31, 2013 Level 3 Fair Value, Option, Quantitative Disclosures, Assets Weighted Average Gas Physical and Financial Forwards and Futures:		Dec. 31, 2013 Level 3 Fair Value, Option, Quantitative Disclosures, Assets Weighted Average Gas Physical and Financial Options:		Dec. 31, 2013 Level 3 Fair Value, Option, Quantitative Disclosures, Assets Weighted Average FTRs Physical and Financial Forwards and Futures:		Dec. 31, 2013 Level 3 Fair Value, Option, Quantitative Disclosures, Assets Weighted Average Liquids Physical and Financial Forwards and Futures:		Dec. 31, 2013 Level 3 Fair Value, Option, Quantitative Disclosures, Assets Weighted Average Electricity Full Requirements Contracts:		Dec. 31, 2013 Level 3 Fair Value, Option, Quantitative Disclosures, Assets Maximum Gas Physical and Financial Forwards and Futures:		Dec. 31, 2013 Level 3 Fair Value, Option, Quantitative Disclosures, Assets Maximum Gas Physical and Financial Options:		Dec. 31, 2013 Level 3 Fair Value, Option, Quantitative Disclosures, Assets Maximum FTRs Physical and Financial Forwards and Futures:		Dec. 31, 2013 Level 3 Fair Value, Option, Quantitative Disclosures, Assets Maximum Liquids Physical and Financial Forwards and Futures:		Dec. 31, 2013 Level 3 Fair Value, Option, Quantitative Disclosures, Assets Maximum Electricity Full Requirements Contracts:		Dec. 31, 2013 Level 3 Fair Value, Option, Quantitative Disclosures, Liabilities Minimum Gas Physical and Financial Forwards and Futures:		Dec. 31, 2013 Level 3 Fair Value, Option, Quantitative Disclosures, Liabilities Minimum Gas Physical and Financial Options:		Dec. 31, 2013 Level 3 Fair Value, Option, Quantitative Disclosures, Liabilities Minimum FTRs Physical and Financial Forwards and Futures:		Dec. 31, 2013 Level 3 Fair Value, Option, Quantitative Disclosures, Liabilities Minimum Liquids Physical and Financial Forwards and Futures:		Dec. 31, 2013 Level 3 Fair Value, Option, Quantitative Disclosures, Liabilities Minimum Electricity Physical and Financial Forwards and Futures:		Dec. 31, 2013 Level 3 Fair Value, Option, Quantitative Disclosures, Liabilities Weighted Average Gas Physical and Financial Forwards and Futures:		Sep. 30, 2013 Level 3 Fair Value, Option, Quantitative Disclosures, Liabilities Weighted Average Gas Physical and Financial Options:		Dec. 31, 2013 Level 3 Fair Value, Option, Quantitative Disclosures, Liabilities Weighted Average Gas Physical and Financial Options:		Dec. 31, 2013 Level 3 Fair Value, Option, Quantitative Disclosures, Liabilities Weighted Average FTRs Physical and Financial Forwards and Futures:		Dec. 31, 2013 Level 3 Fair Value, Option, Quantitative Disclosures, Liabilities Weighted Average Liquids Physical and Financial Forwards and Futures:		Dec. 31, 2013 Level 3 Fair Value, Option, Quantitative Disclosures, Liabilities Weighted Average Electricity Physical and Financial Forwards and Futures:		Dec. 31, 2013 Level 3 Fair Value, Option, Quantitative Disclosures, Liabilities Maximum Gas Physical and Financial Forwards and Futures:		Dec. 31, 2013 Level 3 Fair Value, Option, Quantitative Disclosures, Liabilities Maximum Gas Physical and Financial Options:		Dec. 31, 2013 Level 3 Fair Value, Option, Quantitative Disclosures, Liabilities Maximum FTRs Physical and Financial Forwards and Futures:		Dec. 31, 2013 Level 3 Fair Value, Option, Quantitative Disclosures, Liabilities Maximum Liquids Physical and Financial Forwards and Futures:		Dec. 31, 2013 Level 3 Fair Value, Option, Quantitative Disclosures, Liabilities Maximum Electricity Physical and Financial Forwards and Futures:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	$ 890,000,000	[1]	$ 828,000,000	[1]	$ 32,000,000	$ 14,000,000	[2]	$ 4,000,000	[2]	$ 2,000,000	[3]	$ 6,000,000	[4]		$ 6,000,000
Derivative liabilities	1,102,000,000	[5]	661,000,000	[5]	48,000,000	19,000,000	[2]	8,000,000	[2]	9,000,000	[3]	11,000,000	[4]	1,000,000
Market Price																(2)	[6]	3	[6]	(1)	[6]	1	[6]	10	[6]	2	[6]	4	[6]	0	[6]	1	[6]	42	[6],[7]	5	[6]	5	[6]	5	[6]	3	[6]	406	[6]	(2)	[6]	3	[6]	(1)	[6]	1	[6]	28	[6]	1	[6]			7	[6]	1	[6]	1	[6]	39	[6]	30	[6]	11	[6]	5	[6]	3	[6]	240	[6]
Price Volatility																		14.00%	[8]									20.00%	[8]									36.00%	[8]									14.00%	[8]											20.00%	[8]									36.00%	[8]
Price Correlation																		(9.00%)	[9]									36.00%	[9]									100.00%	[9]									(9.00%)	[9]											36.00%	[9]									100.00%	[9]
Mean Reversion																		$ 0.01	[10]									$ 1	[10]									$ 1	[10]									$ 0.01	[11]									$ 1	[11]											$ 1	[11]
Load Shaping																								0.00%	[12]									7.00%	[12]									10.00%	[12]
Usage Factor																								11.00%	[11]									16.00%	[11]									29.00%	[11]

[1] At December 31, 2013, the total derivative asset balance contains $687 million of current assets, which is presented in current derivative assets, in Dominion’s Consolidated Balance Sheet, and $203 million of noncurrent assets, which is presented in other deferred charges and other assets in Dominion’s Consolidated Balance Sheet. At December 31, 2012, the total derivative asset balance contains $518 million of current assets, which is presented in current derivative assets in Dominion’s Consolidated Balance Sheet and $310 million of noncurrent assets, which is presented in other deferred charges and other assets in Dominion’s Consolidated Balance Sheet.

[2] Includes basis.

[3] Information represents Virginia Power's quantitative information about Level 3 fair value measurements.

[4] Includes NGLs.

[5] At December 31, 2013, the total derivative liability balance contains $828 million of current liabilities, which is presented in current derivative liabilities in Dominion’s Consolidated Balance Sheet, and $274 million of noncurrent liabilities, which is presented in the other deferred credits and other liabilities in Dominion’s Consolidated Balance Sheet. At December 31, 2012, the total derivative liability balance contains $510 million of current liabilities, which is presented in current derivative liabilities in Dominion’s Consolidated Balance Sheet and $151 million of noncurrent liabilities, which is presented in other deferred credits and other liabilities in Dominion’s Consolidated Balance Sheet.

[6] Represents market prices beyond defined terms for Levels 1 and 2.

[7] The range in market prices is the result of large variability in hourly power prices during peak and off-peak hours.

[8] Represents volatilities unrepresented in published markets.

[9] Represents intra-price correlations for which markets do not exist.

[10] Represents mean-reverting property in price simulation modeling.

[11] Represents expected increase (decrease) in sales volumes compared to historical usage.

[12] Converts block monthly loads to 24-hour load shapes.