CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents	$ 2.6	$ 2.2
Accounts receivable, net	53.6	75.1
Accrued unbilled revenues	44.7	56.2
Other Receivables	11.2	6.8
Inventories	14.0	17.1
Regulatory assets	21.8	22.6
Prepaid taxes	26.1	30.2
Prepayments and other	3.2	3.3
Total current assets	177.2	213.5
Property, Plant and Equipment, Net [Abstract]
Property, plant and equipment	2,263.0	2,241.6
Other assets
Regulatory assets	276.0	285.5
Other investments	2.7	2.7
Other	0.3	0.2
Total other assets	279.0	288.4
Total assets	2,719.2	2,743.5
Current liabilities
Short-term debt	50.0	51.0
Notes payable to affiliates	0.0	0.6
Accounts payable	30.7	56.8
Accounts payable to affiliates	23.1	20.0
Dividends payable to parent	15.9	17.4
Regulatory liabilities	24.6	20.9
Taxes Payable, Current	5.5	3.0
Environmental liabilities	10.6	10.9
Accrued interest	9.2	8.8
Other	14.4	14.8
Total current liabilities	184.0	204.2
Deferred credits and other liabilities
Deferred income taxes	282.5	280.7
Deferred investment tax credits	6.7	7.0
Regulatory liabilities	404.8	400.1
Environmental liabilities	16.9	18.0
Customer advances	17.7	16.8
Pension and employee benefit obligations	37.5	44.5
Other	23.1	22.3
Total deferred credits and other liabilities	789.2	789.4
Capitalization
Long-term debt	807.8	807.5
Common stock — 1,000,000 shares authorized of $100 par value; 933,000 shares outstanding at June 30, 2019 and Dec. 31, 2018, respectively	93.3	93.3
Additional paid in capital	513.6	510.1
Retained earnings	331.3	339.0
Total common stockholder’s equity	938.2	942.4
Total liabilities and equity	$ 2,719.2	$ 2,743.5