Consolidated Statements of Cash Flows (Unaudited) (USD $) In Millions	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Operating Activities
Net income	$ 189	$ 178
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	404	414
Deferred income taxes	35	(1)
Asset (gains) losses, net	14	(1)
Changes in assets and liabilities, exclusive of changes shown separately (Note 11)	(220)	(67)
Net cash from operating activities	422	523
Investing Activities
Plant and equipment expenditures	(606)	(401)
Restricted cash for debt redemption	(2)	2
Proceeds from sale of nuclear decommissioning trust fund assets	59	128
Investment in nuclear decommissioning trust funds	(76)	(145)
Notes receivable - affiliates	103	70
Other investments	(13)	(13)
Net cash used for investing activities	(535)	(359)
Financing Activities
Short-term borrowings - affiliates	21	66
Short-term borrowings - other	107	0
Issuance of long-term debt	248	0
Redemption of long-term debt	(115)	(85)
Dividends on common stock	(152)	(152)
Other	(7)	(7)
Net cash from (used for) financing activities	102	(178)
Net Increase in Cash and Cash Equivalents	(11)	(14)
Cash and Cash Equivalents at Beginning of Period	30	34
Cash and Cash Equivalents at End of Period	$ 19	$ 20