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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.

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