CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
CURRENT ASSETS
Cash and cash equivalents	$ 32.0	$ 0.0
Accounts receivable, less reserve of $2.6 and $1.5, respectively	209.5	153.8
Accrued unbilled revenues	71.9	64.7
Income taxes receivable	0.9	10.9
Fuel inventories	36.5	46.3
Materials and supplies, at average cost	107.0	90.6
Fuel clause under recoveries	0.0	39.5
Other	30.7	24.4
Total current assets	488.5	430.2
OTHER PROPERTY AND INVESTMENTS
Investment in unconsolidated affiliates	376.8	1,151.5
Other	82.2	82.7
Total other property and investments	459.0	1,234.2
PROPERTY, PLANT AND EQUIPMENT
In service	13,115.2	12,771.1
Construction work in progress	128.9	141.6
Total property, plant and equipment	13,244.1	12,912.7
Less: accumulated depreciation	4,010.1	3,868.1
Net property, plant and equipment	9,234.0	9,044.6
DEFERRED CHARGES AND OTHER ASSETS
Regulatory assets	301.6	306.0
Other	14.5	9.3
Total deferred charges and other assets	316.1	315.3
TOTAL ASSETS	10,497.6	11,024.3
CURRENT LIABILITIES
Short-term debt	0.0	112.0
Accounts payable	123.2	194.9
Dividends payable	80.5	77.6
Customer deposits	82.4	83.0
Accrued taxes	78.4	41.9
Accrued interest	40.4	37.9
Accrued compensation	33.9	40.6
Fuel clause over recoveries	39.6	4.8
Other	39.0	65.2
Total current liabilities	517.4	657.9
LONG-TERM DEBT	3,493.9	3,195.2
DEFERRED CREDITS AND OTHER LIABILITIES
Accrued benefit obligations	194.3	225.0
Deferred income taxes	1,229.2	1,375.8
Deferred investment tax credits	10.2	7.1
Regulatory liabilities	1,199.4	1,223.5
Other	192.5	200.3
Total deferred credits and other liabilities	2,825.6	3,031.7
Total liabilities	6,836.9	6,884.8
COMMITMENTS AND CONTINGENCIES (NOTE 13)
STOCKHOLDERS' EQUITY
Common stockholders' equity	1,121.5	1,131.3
Retained earnings	2,570.2	3,036.1
Accumulated other comprehensive loss, net of tax	(25.7)	(27.9)
Total stockholders' equity	3,660.7	4,139.5
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	10,497.6	11,024.3
Treasury Stock, Carrying Basis	$ 5.3	$ 0.0