Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010		Dec. 31, 2009
Net income including noncontrolling interests	$ 1,426	$ 2,825	[1]	$ 1,304
Other comprehensive income (loss), net of taxes:
Net deferred gains (losses) on derivatives-hedging activities, net of tax	(67)	84	[1]	323
Changes in unrealized net gains (losses) on investment securities, net of tax	11	89	[1]	134
Changes in net unrecognized pension and other postretirement benefit costs, net of tax	(231)	(18)	[1]	136
Amounts reclassified to net income:
Net derivative (gains) losses-hedging activities, net of tax	(38)	(314)	[1]	(549)
Net realized (gains) losses on investment securities, net of tax	6	(14)	[1]	2
Net pension and other postretirement benefit costs, net of tax	39	54	[1]	24
Total other comprehensive income (loss)	(280)	(119)	[1]	70
Comprehensive income including noncontrolling interests	1,146	2,706	[1]	1,374
Comprehensive income attributable to noncontrolling interests	18	17	[1]	17
Comprehensive income	1,128	2,689	[1]	1,357
Virginia Electric and Power Company [Member]
Net income including noncontrolling interests	822	852		356	[2]
Other comprehensive income (loss), net of taxes:
Net deferred gains (losses) on derivatives-hedging activities, net of tax	(6)	(1)		8	[2]
Changes in unrealized net gains (losses) on investment securities, net of tax	2	9		12	[2]
Amounts reclassified to net income:
Net derivative (gains) losses-hedging activities, net of tax	(1)	(8)		1	[2]
Net realized (gains) losses on investment securities, net of tax	0	(2)		2	[2]
Total other comprehensive income (loss)	(5)	(2)		23	[2]
Comprehensive income	$ 817	$ 850		$ 379	[2]

[1] Other comprehensive income for the year ended December 31, 2009 excludes a $20 million ($12 million after-tax) adjustment to AOCI representing the cumulative effect of the change in accounting principle related to the recognition and presentation of other-than-temporary impairments.

[2] Other comprehensive income for the year ended December 31, 2009 excludes a $3 million ($2 million after-tax) adjustment to AOCI representing the cumulative effect of the change in accounting principle related to the recognition and presentation of other-than-temporary impairments.