CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
CURRENT ASSETS
Cash and cash equivalents	$ 0.0	$ 75.2
Accounts receivable, less reserve of $1.5 and $1.4, respectively	163.1	173.1
Accounts receivable - unconsolidated affiliates	0.0	1.7
Accrued unbilled revenues	90.9	53.5
Income taxes receivable	14.6	17.2
Fuel inventories	107.1	113.8
Materials and supplies, at average cost	75.6	80.1
Other	75.9	55.6
Total current assets	527.2	570.2
OTHER PROPERTY AND INVESTMENTS
Investment in unconsolidated affiliates	1,168.8	1,194.4
Other	72.4	70.7
Total other property and investments	1,241.2	1,265.1
PROPERTY, PLANT AND EQUIPMENT
In service	10,522.7	10,318.3
Construction work in progress	319.4	278.5
Total property, plant and equipment	10,842.1	10,596.8
Less accumulated depreciation	3,372.2	3,274.4
Net property, plant and equipment	7,469.9	7,322.4
DEFERRED CHARGES AND OTHER ASSETS
Regulatory assets	401.9	402.2
Other	19.0	20.7
Total deferred charges and other assets	420.9	422.9
TOTAL ASSETS	9,659.2	9,580.6
CURRENT LIABILITIES
Short-term debt	284.4	0.0
Accounts payable - unconsolidated affiliates	1.4	0.0
Accounts payable	159.7	262.5
Dividends payable	54.9	54.9
Customer deposits	77.5	77.0
Accrued taxes	39.4	45.9
Accrued interest	40.3	42.9
Accrued compensation	35.7	54.4
Long-term debt due within one year	0.0	110.0
Fuel clause over recoveries	41.3	61.3
Other	38.9	43.9
Total current liabilities	773.5	752.8
LONG-TERM DEBT	2,629.7	2,628.8
DEFERRED CREDITS AND OTHER LIABILITIES
Accrued benefit obligations	300.1	299.9
Deferred income taxes	2,232.6	2,178.2
Regulatory liabilities	283.9	273.6
Other	117.6	121.3
Total deferred credits and other liabilities	2,934.2	2,873.0
Total liabilities	6,337.4	6,254.6
COMMITMENTS AND CONTINGENCIES (NOTE 12)
STOCKHOLDERS' EQUITY
Common stockholders' equity	1,104.5	1,101.3
Retained earnings	2,246.7	2,259.8
Accumulated other comprehensive loss, net of tax	(29.4)	(35.1)
Total stockholders' equity	3,321.8	3,326.0
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 9,659.2	$ 9,580.6