CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 49.3	$ 28.0
Adjustments to reconcile net income to net cash provided from operating activities
Depreciation and amortization	67.2	92.9
Deferred income taxes and investment tax credits, net	22.0	15.4
Equity in earnings of unconsolidated affiliates	(47.9)	0
Distributions from unconsolidated affiliates	32.5	0
Allowance for equity funds used during construction	(1.1)	(1.2)
Gain on disposition and abandonment of assets	(0.2)	(8.7)
Stock-based compensation	(8.6)	(8.3)
Regulatory assets	3.5	5.5
Regulatory liabilities	(1.9)	(4.1)
Other assets	(7.2)	(0.1)
Other liabilities	26.2	6.3
Change in certain current assets and liabilities
Accounts receivable, net	(12.5)	8.4
Accounts receivable - unconsolidated affiliates	2.1	0
Accrued unbilled revenues	7.0	7.8
Fuel, materials and supplies inventories	(4.0)	(7.7)
Fuel clause under recoveries	(35.8)	(0.4)
Other current assets	3.7	(7.7)
Accounts payable	(29.6)	16.5
Fuel clause over recoveries	(0.4)	(27.6)
Other current liabilities	(41.1)	(55.8)
Net Cash Provided from Operating Activities	23.2	59.2
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures (less allowance for equity funds used during construction)	(171.8)	(325.1)
Proceeds from sale of assets	0.4	35.6
Net Cash Used in Investing Activities	(171.4)	(289.5)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from long-term debt	246.9	0
Issuance of common stock	3.4	3.2
Distributions to noncontrolling interest partners	0	(2.5)
Dividends paid on common stock	(44.7)	(41.2)
(Decrease) increase in short-term debt	(61.8)	276.1
Net Cash Provided from Financing Activities	143.8	235.6
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(4.4)	5.3
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	6.8	1.8
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$ 2.4	$ 7.1