CONDENSED BALANCE SHEETS - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents	$ 13.8	$ 8.9
Accounts receivable and unbilled revenues, net of reserves of $4.2	186.2	217.1
Accounts receivable from related parties	15.6	26.6
Materials, supplies, and inventories	105.5	103.0
Prepaid taxes	57.5	41.4
Other	11.6	9.2
Current assets	390.2	406.2
Long-term assets
Property, plant, and equipment, net of accumulated depreciation and amortization of $1,667.4 and $1,620.5, respectively	4,250.0	4,150.1
Regulatory assets	485.6	485.6
Goodwill	36.4	36.4
Pension and OPEB assets	96.2	92.8
Other	45.8	46.6
Long-term assets	4,914.0	4,811.5
Total assets	5,304.2	5,217.7
Current liabilities
Short-term debt	265.3	284.4
Accounts payable	135.2	145.4
Accounts payable to related parties	45.3	54.2
Other	67.3	79.4
Current liabilities	513.1	563.4
Long-term liabilities
Long-term debt	1,315.1	1,314.7
Deferred income taxes	569.1	520.8
Deferred investment tax credits	6.3	6.4
Regulatory liabilities	758.7	785.7
Environmental remediation liabilities	104.2	90.3
Pension and OPEB obligations	31.0	37.3
Other	109.3	129.2
Long-term liabilities	2,893.7	2,884.4
Commitments and contingencies (Note 16)
Shareholder's equity
Common stock – $4 par value; 32,000,000 shares authorized; 23,896,962 shares issued and outstanding	95.6	95.6
Additional paid in capital	1,221.0	1,115.9
Retained earnings	580.8	558.4
Common shareholder's equity	1,897.4	1,769.9
Total liabilities and equity	$ 5,304.2	$ 5,217.7