CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
CURRENT ASSETS
Cash and cash equivalents	$ 2.2	$ 6.8
Accounts receivable, less reserve of $0.9 and $1.9, respectively	187.4	179.4
Accounts receivable - unconsolidated affiliates	7.4	12.4
Accrued unbilled revenues	82.3	58.7
Income taxes receivable	3.1	5.6
Fuel inventories	58.0	74.4
Materials and supplies, at average cost	77.8	80.7
Deferred income taxes	160.8	215.8
Fuel clause under recoveries	82.1	26.2
Other	35.6	34.6
Total current assets	696.7	694.6
OTHER PROPERTY AND INVESTMENTS
Investment in unconsolidated affiliates	1,309.6	1,298.8
Other	65.4	61.0
Total other property and investments	1,375.0	1,359.8
PROPERTY, PLANT AND EQUIPMENT
In service	9,644.3	9,183.1
Construction work in progress	222.3	468.5
Total property, plant and equipment	9,866.6	9,651.6
Less accumulated depreciation	3,046.3	2,978.8
Net property, plant and equipment	6,820.3	6,672.8
DEFERRED CHARGES AND OTHER ASSETS
Regulatory assets	376.5	379.1
Other	55.8	28.4
Total deferred charges and other assets	432.3	407.5
TOTAL ASSETS	9,324.3	9,134.7
CURRENT LIABILITIES
Short-term debt	386.6	439.6
Accounts payable	174.3	251.0
Dividends payable	44.8	44.7
Customer deposits	71.8	70.9
Accrued taxes	38.1	39.9
Accrued interest	46.5	43.4
Accrued compensation	38.9	56.9
Long-term debt due within one year	240.0	100.0
Fuel clause over recoveries	0	0.4
Other	52.9	47.0
Total current liabilities	1,093.9	1,093.8
LONG-TERM DEBT	2,409.5	2,300.1
DEFERRED CREDITS AND OTHER LIABILITIES
Accrued benefit obligations	244.0	241.5
Deferred income taxes	2,130.1	2,125.3
Deferred investment tax credits	1.4	1.9
Regulatory liabilities	239.7	234.2
Other	105.9	100.8
Total deferred credits and other liabilities	2,721.1	2,703.7
Total liabilities	6,224.5	6,097.6
COMMITMENTS AND CONTINGENCIES (NOTE 12)
STOCKHOLDERS' EQUITY
Common stockholders' equity	1,075.3	1,073.6
Retained earnings	2,052.1	1,991.7
Accumulated other comprehensive loss, net of tax	(27.6)	(28.2)
Total stockholders' equity	3,099.8	3,037.1
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 9,324.3	$ 9,134.7