Consolidated Statements of Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Operating Activities
Net Income	$ 206	$ 224
Adjustments to reconcile net income to net cash from operating activities:
Depreciation, depletion and amortization	433	388
Deferred income taxes	61	(9)
Asset (gains), losses and reserves, net	0	(1)
Changes in assets and liabilities, exclusive of changes shown separately (Note 11)	(83)	44
Net cash from operating activities	617	646
Investing Activities
Plant and equipment expenditures	(607)	(610)
Restricted cash for debt redemption, principally Securitization	12	14
Notes receivable from affiliate	(1)	(166)
Proceeds from sale of nuclear decommissioning trust fund assets	27	36
Investment in nuclear decommissioning trust funds	(35)	(44)
Other Investments	(15)	(7)
Net cash used for investing activities	(619)	(777)
Financing Activities
Issuance of long-term debt	371	496
Redemption of long-term debt	(152)	(97)
Short-term borrowings - other	(34)	0
Short-term borrowings from affiliate	(20)	17
Dividends on common stock	(171)	(152)
Other	(2)	(3)
Net cash used for financing activities	(8)	261
Net Increase (Decrease) in Cash and Cash Equivalents	(10)	130
Cash and Cash Equivalents at Beginning of Period	30	13
Cash and Cash Equivalents at End of Period	$ 20	$ 143