Consolidated Condensed Statements of Cash Flows (Unaudited) (USD $) In Millions	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Operating Activities
Net Income	$ 280.4	$ 218.4
Reconciliation to cash
Depreciation and amortization	169.2	157.4
Amortization of gain	0	(96.6)
Equity in earnings of transmission affiliate	(30.7)	(30.3)
Distributions from transmission affiliate	24.6	24.8
Deferred income taxes and investment tax credits, net	137.0	7.3
Deferred revenue	2.8	55.0
Contributions to qualified benefit plans	(122.4)	0
Change in -
Accounts receivable and accrued revenues	91.1	72.5
Inventories	40.0	(12.1)
Other current assets	10.2	20.4
Accounts payable	(38.7)	(29.8)
Accrued income taxes, net	59.2	(13.3)
Deferred costs, net	13.0	13.0
Other current liabilities	11.4	14.7
Other, net	1.5	22.3
Cash Provided by Operating Activities	648.6	423.7
Investing Activities
Capital expenditures	(347.1)	(379.1)
Investment in transmission affiliate	(4.6)	(3.9)
Proceeds from asset sales	38.5	63.5
Change in restricted cash	(37.2)	81.8
Other, net	(17.1)	(37.6)
Cash Used in Investing Activities	(367.5)	(275.3)
Financing Activities
Proceeds from Stock Options Exercised	29.6	43.2
Purchase of common stock	(51.6)	(68.9)
Dividends paid on common stock	(121.5)	(93.5)
Issuance of long-term debt	420.0	530.0
Retirement and repurchase of long-term debt	(456.9)	(263.5)
Change in short-term debt	(115.5)	(304.7)
Other, net	0.9	(0.7)
Cash Used in Financing Activities	(295.0)	(158.1)
Change in Cash and Cash Equivalents	(13.9)	(9.7)
Cash and Cash Equivalents at Beginning of Period	24.5	20.2
Cash and Cash Equivalents at End of Period	$ 10.6	$ 10.5