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Investments (Tables)
 3 Months Ended
Mar. 31, 2017
Gain (Loss) on Investments [Line Items]  
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)
 
 
 
 
 
At March 31, 2017
 
 
 
 
 
Marketable equity securities:
 
 
 
 
 
U.S.
$
1,543

$
1,478

$
—

 
$
3,021

Fixed income:
 
 
 
 
 
Corporate debt instruments
488

13

(3
)
 
498

Government securities
977

24

(6
)
 
995

Common/collective trust funds
66

—

—

 
66

Cost method investments
69

—

—

 
69

Cash equivalents and other(2)
6

—

—

 
6

Total
$
3,149

$
1,515

$
(9
)
(3) 
$
4,655

At December 31, 2016
 
 
 
 
 
Marketable equity securities:
 
 
 
 
 
U.S.
$
1,449

$
1,408

$
—

 
$
2,857

Fixed income:
 
 
 
 
 
Corporate debt instruments
478

13

(4
)
 
487

Government securities
978

22

(8
)
 
992

Common/collective trust funds
67

—

—

 
67

Cost method investments
69

—

—

 
69

Cash equivalents and other(2)
12

—

—

 
12

Total
$
3,053

$
1,443

$
(12
)
(3) 
$
4,484

(1)
Included in AOCI and the nuclear decommissioning trust regulatory liability.
(2)
Includes net pending sales of securities of $2 million and $9 million at March 31, 2017 and December 31, 2016, respectively.
(3)
The fair value of securities in an unrealized loss position was $461 million and $576 million at March 31, 2017 and December 31, 2016, 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, 2017 by contractual maturity is as follows:
 
Amount
(millions)
 
Due in one year or less
$
164

Due after one year through five years
434

Due after five years through ten years
385

Due after ten years
576

Total
$
1,559
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,
 
2017
2016
(millions)
 
 
Proceeds from sales
$
756

$
368

Realized gains(1)
94

25

Realized losses(1)
20

19

(1)
Includes realized gains and losses recorded to the nuclear decommissioning trust regulatory liability.
Virginia Electric and Power Company  
Gain (Loss) on Investments [Line Items]  
Available-For-Sale Securities
Virginia Power’s decommissioning trust funds are summarized below:
 
Amortized
Cost
Total  Unrealized
Gains(1)
Total  Unrealized
Losses(1)
 
Fair Value
(millions)
 
 
 
 
 
At March 31, 2017
 
 
 
 
 
Marketable equity securities:
 
 
 
 
 
U.S.
$
720

$
654

$
—

 
$
1,374

Fixed income:
 
 
 
 
 
Corporate debt instruments
278

6

(2
)
 
282

Government securities
418

11

(2
)
 
427

Common/collective trust funds
30

—

—

 
30

Cost method investments
69

—

—

 
69

Cash equivalents and other(2)
4

—

—

 
4

Total
$
1,519

$
671

$
(4
)
(3) 
$
2,186

At December 31, 2016
 
 
 
 
 
Marketable equity securities:
 
 
 
 
 
U.S.
$
677

$
624

$
—

 
$
1,301

Fixed income:
 
 
 
 
 
Corporate debt instruments
274

6

(4
)
 
276

Government securities
420

9

(2
)
 
427

Common/collective trust funds
26

—

—

 
26

Cost method investments
69

—

—

 
69

Cash equivalents and other(2)
7

—

—

 
7

Total
$
1,473

$
639

$
(6
)
(3) 
$
2,106

(1)
Included in AOCI and the nuclear decommissioning trust regulatory liability.
(2)
Includes pending sales of securities of $4 million and $7 million at March 31, 2017 and December 31, 2016, respectively.
(3)
The fair value of securities in an unrealized loss position was $214 million and $287 million at March 31, 2017 and December 31, 2016, respectively.
Investments Classified by Contractual Maturity Date
The fair value of Virginia Power’s marketable debt securities held in nuclear decommissioning trust funds at March 31, 2017 by contractual maturity is as follows:
 
Amount
(millions)
 
Due in one year or less
$
60

Due after one year through five years
188

Due after five years through ten years
205

Due after ten years
286

Total
$
739
Marketable Securities
Presented below is selected information regarding Virginia Power’s marketable equity and debt securities held in nuclear decommissioning trust funds.
 
Three Months Ended March 31,
 
2017
2016
(millions)
 
 
Proceeds from sales
$
330

$
193

Realized gains(1)
45

12

Realized losses(1)
10

10

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