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CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($)
$ in Millions
Jun. 30, 2020
Dec. 31, 2019
CURRENT ASSETS    
Cash and cash equivalents $ 67.5 $ 0.0
Accounts receivable, less reserve of $2.0 and $1.5, respectively 160.6 153.8
Accrued unbilled revenues 93.7 64.7
Income taxes receivable 0.5 10.9
Fuel inventories 42.7 46.3
Materials and supplies, at average cost 98.8 90.6
Fuel clause under recoveries 0.0 39.5
Other 35.2 24.4
Total current assets 499.0 430.2
OTHER PROPERTY AND INVESTMENTS    
Investment in unconsolidated affiliates 376.5 1,151.5
Other 79.2 82.7
Total other property and investments 455.7 1,234.2
PROPERTY, PLANT AND EQUIPMENT    
In service 13,005.4 12,771.1
Construction work in progress 124.0 141.6
Total property, plant and equipment 13,129.4 12,912.7
Less: accumulated depreciation 3,957.3 3,868.1
Net property, plant and equipment 9,172.1 9,044.6
DEFERRED CHARGES AND OTHER ASSETS    
Regulatory assets 299.4 306.0
Other 12.9 9.3
Total deferred charges and other assets 312.3 315.3
TOTAL ASSETS 10,439.1 11,024.3
CURRENT LIABILITIES    
Short-term debt 75.0 112.0
Accounts payable 144.2 194.9
Dividends payable 77.6 77.6
Customer deposits 82.7 83.0
Accrued taxes 57.5 41.9
Accrued interest 40.3 37.9
Accrued compensation 38.7 40.6
Fuel clause over recoveries 37.2 4.8
Other 41.4 65.2
Total current liabilities 594.6 657.9
LONG-TERM DEBT 3,493.4 3,195.2
DEFERRED CREDITS AND OTHER LIABILITIES    
Accrued benefit obligations 214.3 225.0
Deferred income taxes 1,165.7 1,375.8
Deferred investment tax credits 7.1 7.1
Regulatory liabilities 1,206.2 1,223.5
Other 193.6 200.3
Total deferred credits and other liabilities 2,786.9 3,031.7
Total liabilities 6,874.9 6,884.8
COMMITMENTS AND CONTINGENCIES (NOTE 13)
STOCKHOLDERS' EQUITY    
Common stockholders' equity 1,119.1 1,131.3
Retained earnings 2,473.3 3,036.1
Accumulated other comprehensive loss, net of tax (27.9) (27.9)
Total stockholders' equity 3,564.2 4,139.5
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY 10,439.1 11,024.3
Treasury Stock, Carrying Basis $ 0.3 $ 0.0