Consolidated Statements of Cash Flows (Unaudited) (USD $) In Millions	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Operating Activities
Net Income	$ 563	$ 483
Adjustments to reconcile net income to net cash from operating activities:
Depreciation, depletion and amortization	752	775
Deferred income taxes	123	173
Assets losses, reserves and impairments, net	0	5
Changes in assets and liabilities, exclusive of changes shown separately (Note 13)	48	73
Net cash from operating activities	1,486	1,509
Investing Activities
Plant and equipment expenditures — utility	(968)	(743)
Plant and equipment expenditures — non-utility	(61)	(75)
Proceeds from sale of assets	13	28
Restricted cash for debt redemption, principally Securitization	47	33
Proceeds from sale of nuclear decommissioning trust fund assets	69	179
Investment in nuclear decommissioning trust funds	(97)	(204)
Consolidation of VIEs	0	19
Investment in Millennium Pipeline Project	0	(49)
Other	(55)	(22)
Net cash used for investing activities	(1,052)	(834)
Financing Activities
Issuance of long-term debt, net	908	595
Redemption of long-term debt	(1,161)	(660)
Short-term borrowings	126	(307)
Issuance of common stock	0	26
Repurchase of common stock	(18)	0
Dividends on common stock	(289)	(265)
Other	(19)	(32)
Net cash used for financing activities	(453)	(643)
Net Increase (Decrease) in Cash and Cash Equivalents	(19)	32
Cash and Cash Equivalents at Beginning of Period	65	52
Cash and Cash Equivalents at End of Period	$ 46	$ 84