Consolidated Statements of Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Operating Activities
Net Income	$ 224	$ 189
Adjustments to reconcile net income to net cash from operating activities:
Depreciation, depletion and amortization	388	404
Deferred income taxes	(9)	35
Asset (gains), losses and reserves and impairments, net	(1)	14
Changes in assets and liabilities, exclusive of changes shown separately (Note 11)	44	(220)
Net cash from operating activities	646	422
Investing Activities
Payments to Acquire Property, Plant, and Equipment	(610)	(606)
Restricted cash for debt redemption, principally Securitization	14	(2)
Proceeds from sale of nuclear decommissioning trust fund assets	36	59
Investment in nuclear decommissioning trust funds	(44)	(76)
Notes receivable - affiliates	(166)	103
Other investments	(7)	(13)
Net cash used for investing activities	(777)	(535)
Financing Activities
Issuance of long-term debt	496	248
Redemption of long-term debt	(97)	(115)
Short-term borrowings — affiliates	17	21
Short-term borrowings — other	0	107
Dividends on common stock	(152)	(152)
Other	(3)	(7)
Net cash used for financing activities	261	102
Net Increase (Decrease) in Cash and Cash Equivalents	130	(11)
Cash and Cash Equivalents at Beginning of Period	13	30
Cash and Cash Equivalents at End of Period	$ 143	$ 19