CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
CURRENT ASSETS
Cash and cash equivalents	$ 145.9	$ 0.0
Accounts receivable, less reserve of $1.1 and $1.5, respectively	143.4	153.8
Accrued unbilled revenues	58.9	64.7
Income taxes receivable	0.8	10.9
Fuel inventories	45.5	46.3
Materials and supplies, at average cost	97.2	90.6
Fuel clause under recoveries	0.0	39.5
Other	30.8	24.4
Total current assets	522.5	430.2
OTHER PROPERTY AND INVESTMENTS
Investment in unconsolidated affiliates	367.5	1,151.5
Other	79.9	82.7
Total other property and investments	447.4	1,234.2
PROPERTY, PLANT AND EQUIPMENT
In service	12,862.4	12,771.1
Construction work in progress	149.5	141.6
Total property, plant and equipment	13,011.9	12,912.7
Less: accumulated depreciation	3,920.9	3,868.1
Net property, plant and equipment	9,091.0	9,044.6
DEFERRED CHARGES AND OTHER ASSETS
Regulatory assets	300.0	306.0
Other	10.0	9.3
Total deferred charges and other assets	310.0	315.3
TOTAL ASSETS	10,370.9	11,024.3
CURRENT LIABILITIES
Short-term debt	375.0	112.0
Accounts payable	157.2	194.9
Dividends payable	77.6	77.6
Customer deposits	83.2	83.0
Accrued taxes	34.9	41.9
Accrued interest	36.1	37.9
Accrued compensation	26.9	40.6
Fuel clause over recoveries	15.6	4.8
Other	48.7	65.2
Total current liabilities	855.2	657.9
LONG-TERM DEBT	3,195.6	3,195.2
DEFERRED CREDITS AND OTHER LIABILITIES
Accrued benefit obligations	217.1	225.0
Deferred income taxes	1,129.0	1,375.8
Deferred investment tax credits	7.1	7.1
Regulatory liabilities	1,216.1	1,223.5
Other	198.1	200.3
Total deferred credits and other liabilities	2,767.4	3,031.7
Total liabilities	6,818.2	6,884.8
COMMITMENTS AND CONTINGENCIES (NOTE 13)
STOCKHOLDERS' EQUITY
Common stockholders' equity	1,116.8	1,131.3
Retained earnings	2,465.0	3,036.1
Accumulated other comprehensive loss, net of tax	(28.8)	(27.9)
Total stockholders' equity	3,552.7	4,139.5
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	10,370.9	11,024.3
Treasury Stock, Carrying Basis	$ 0.3	$ 0.0