Investments (Tables)

3 Months Ended

Mar. 31, 2012

Investments, Debt and Equity Securities [Abstract]

Available-For-Sale Securities

Dominion’s decommissioning trust funds are summarized below.

	Amortized Cost		Total  Unrealized Gains(1)		Total  Unrealized Losses (1)				Fair Value
(millions)
March 31, 2012
Marketable equity securities
U.S.:
Large Cap	$	1,178	$	724	$	—			$	1,902
Other	38		15		—				53
Marketable debt securities:
Corporate bonds	296		22		(1		)		317
U.S. Treasury securities and agency debentures	459		18		(1		)		476
State and municipal	267		21		—				288
Other	19		1		—				20
Cost method investments	117		—		—				117
Cash equivalents and other(2)	58		—		—				58
Total	$	2,432	$	801	$	(2	)	(3)	$	3,231
December 31, 2011
Marketable equity securities:
U.S.:
Large Cap	$	1,152	$	537	$	—			$	1,689
Other	36		10		—				46
Marketable debt securities:
Corporate bonds	314		19		(1		)		332
U.S. Treasury securities and agency debentures	437		20		(1		)		456
State and municipal	264		24		—				288
Other	23		1		—				24
Cost method investments	118		—		—				118
Cash equivalents and other(2)	46		—		—				46
Total	$	2,390	$	611	$	(2	)	(3)	$	2,999

(1) Included in AOCI and the decommissioning trust regulatory liability.

(2) Includes pending purchases of securities of $20 million and $11 million at March 31, 2012 and December 31, 2011, respectively.

(3) The fair value of securities in an unrealized loss position was $192 million and $164 million at March 31, 2012 and December 31, 2011, respectively.

Investments Classified by Contractual Maturity Date

The fair value of Dominion’s marketable debt securities held in nuclear decommissioning trust funds at March 31, 2012 by contractual maturity is as follows:

	Amount
(millions)
Due in one year or less	$	62
Due after one year through five years	324
Due after five years through ten years	338
Due after ten years	377
Total	$	1,101

Marketable Securities

Presented below is selected information regarding Dominion’s marketable equity and debt securities held in nuclear decommissioning trust funds.

	Three Months Ended March 31,
	2012		2011
(millions)
Proceeds from sales	$	415	$	502
Realized gains(1)	28		14
Realized losses(1)	4		8

(1) Includes realized gains or losses recorded to the decommissioning trust regulatory liability.