Consolidated Condensed Statements of Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Operating Activities
Net Income	$ 466.9	$ 433.1
Reconciliation to cash
Depreciation and amortization	312.9	297.6
Deferred income taxes and investment tax credits, net	258.5	219.8
Contributions to qualified benefit plans	0
Change in -
Accounts receivable and accrued revenues	221.1	95.3
Inventories	(49.9)	(6.9)
Other current assets	37.2	40.6
Accounts payable	(27.7)	(59.2)
Accrued income taxes, net	(10.3)	48.2
Other current liabilities	(36.8)	(0.1)
Other, net	(137.3)	(18.1)
Cash Provided by Operating Activities	1,034.6	1,050.3
Investing Activities
Capital expenditures	(513.0)	(497.7)
Cost of Removal, Net of Salvage	(18.2)	(27.8)
Investment in transmission affiliate	(10.5)	(7.9)
Other, net	12.8	(11.4)
Cash Used in Investing Activities	(528.9)	(544.8)
Financing Activities
Exercise of stock options	31.7	42.7
Purchase of common stock	(84.2)	(187.9)
Dividends paid on common stock	(264.0)	(242.3)
Issuance of long-term debt	250.0	251.0
Retirement of long-term debt	(322.0)	(364.2)
Change in short-term debt	(61.6)	(32.8)
Other, net	7.1	10.9
Cash Used in Financing Activities	(443.0)	(522.6)
Change in Cash and Cash Equivalents	62.7	(17.1)
Cash and Cash Equivalents at Beginning of Period	26.0	35.6
Cash and Cash Equivalents at End of Period	$ 88.7	$ 18.5