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NUCLEAR PLANT (Tables)
12 Months Ended
Dec. 31, 2014
Schedule Of Nuclear Decommissioning Trusts Investments [Abstract]  
Schedule Of Nuclear Decommissioning Trusts Investments
NUCLEAR DECOMMISSIONING TRUSTS
(Dollars in millions)
GrossGrossEstimated
unrealizedunrealizedfair
Costgainslossesvalue
At December 31, 2014:
Debt securities:
Debt securities issued by the U.S. Treasury and other
U.S. government corporations and agencies(1)$103$6$$109
Municipal bonds(2)1218129
Other securities(3)2067(6)207
Total debt securities43021(6)445
Equity securities215444(4)655
Cash and cash equivalents30131
Total $675$466$(10)$1,131
At December 31, 2013:
Debt securities:
Debt securities issued by the U.S. Treasury and other
U.S. government corporations and agencies$116$3$(2)$117
Municipal bonds1102(1)111
Other securities1553(5)153
Total debt securities3818(8)381
Equity securities207409(2)614
Cash and cash equivalents3939
Total$627$417$(10)$1,034
(1)Maturity dates are 2016-2060.
(2)Maturity dates are 2015-2047.
(3)Maturity dates are 2015-2111.
Schedule Of Sales Of Securities By Nuclear Decommissioning Trusts [Abstract]  
Schedule Of Sales Of Securities By Nuclear Decommissioning Trusts
SALES OF SECURITIES
(Dollars in millions)
Years ended December 31,
201420132012
Proceeds from sales(1)$601$685$723
Gross realized gains112621
Gross realized losses(11)(18)(13)
(1)Excludes securities that are held to maturity.