v3.4.0.3

NUCLEAR PLANT (Tables) | 3 Months Ended
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Mar. 31, 2016
Public Utilities General Disclosures [Abstract] |
Schedule of Nuclear Decommissioning Trusts Investments |
NUCLEAR DECOMMISSIONING TRUSTS
(Dollars in millions)
|  |  |  |  | Gross |  | Gross |  | Estimated
|  |  |  |  | unrealized |  | unrealized |  | fair
|  |  | Cost |  | gains |  | losses |  | value
At March 31, 2016: |  |  |  |  |  |  |  |
Debt securities: |  |  |  |  |  |  |  |
Debt securities issued by the U.S. Treasury and other |  |  |  |  |  |  |  |
U.S. government corporations and agencies(1) | $ | 101 | $ | 4 | $ | ― | $ | 105
Municipal bonds(2) |  | 146 |  | 10 |  | ― |  | 156
Other securities(2) |  | 192 |  | 6 |  | (8) |  | 190
Total debt securities |  | 439 |  | 20 |  | (8) |  | 451
Equity securities |  | 214 |  | 413 |  | (4) |  | 623
Cash and cash equivalents |  | 9 |  | ― |  | (1) |  | 8
Total | $ | 662 | $ | 433 | $ | (13) | $ | 1,082
At December 31, 2015: |  |  |  |  |  |  |  |
Debt securities: |  |  |  |  |  |  |  |
Debt securities issued by the U.S. Treasury and other |  |  |  |  |  |  |  |
U.S. government corporations and agencies | $ | 89 | $ | 2 | $ | ― | $ | 91
Municipal bonds |  | 148 |  | 8 |  | ― |  | 156
Other securities |  | 194 |  | 1 |  | (13) |  | 182
Total debt securities |  | 431 |  | 11 |  | (13) |  | 429
Equity securities |  | 214 |  | 412 |  | (7) |  | 619
Cash and cash equivalents |  | 15 |  | ― |  | ― |  | 15
Total | $ | 660 | $ | 423 | $ | (20) | $ | 1,063
(1) | Maturity dates are 2016-2065.
(2) | Maturity dates are 2016-2115.
Schedule of Sales of Securities By Nuclear Decommissioning Trusts |
SALES OF SECURITIES
(Dollars in millions)
|  | Three months ended March 31,
|  | 2016 | 2015
Proceeds from sales(1) | $ | 93 | $ | 94
Gross realized gains |  | 3 |  | 2
Gross realized losses |  | (8) |  | (4)
(1) | Excludes securities that are held to maturity.

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