Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Current Assets
Cash and cash equivalents	$ 19.1	$ 20.2
Accounts receivable and unbilled revenues, net of reserves of $38.1 and $40.9, respectively	434.6	472.3
Accounts receivable from related parties	86.5	112.4
Materials, supplies, and inventories	229.8	241.4
Prepaid taxes	104.4	138.4
Other	33.6	31.6
Total current assets	908.0	1,016.3
Long-term assets
Property, plant, and equipment, net of accumulated depreciation and amortization of $4,564.0 and $4,505.5, respectively	9,586.7	9,528.9
Regulatory assets	2,755.2	2,902.2
Other	110.9	90.9
Long-term assets	12,452.8	12,522.0
Total Assets	13,360.8	13,538.3
Current Liabilities
Short-term debt	115.5	134.9
Current portion of long-term debt	0.0	250.0
Current portion of finance and capital lease obligations	57.8	49.9
Accounts payable	267.6	248.9
Accounts payable to related parties	184.5	226.0
Accrued payroll and benefits	51.3	50.4
Accrued Income Taxes, Current	12.3	13.6
Other	105.6	103.2
Current liabilities	794.6	1,076.9
Long-term liabilities
Long-term debt	2,759.2	2,459.6
Finance and capital lease obligations	2,783.1	2,807.2
Deferred income taxes	1,347.4	1,298.3
Regulatory liabilities	1,744.2	2,002.3
Pension and OPEB obligations	59.8	118.5
Other	281.0	284.3
Long-term liabilities	8,974.7	8,970.2
Commitments and contingencies (Note 19)
Common shareholder's equity
Common stock – $10 par value; 65,000,000 shares authorized; 33,289,327 shares outstanding	332.9	332.9
Additional paid in capital	929.5	831.3
Retained earnings	2,298.7	2,296.6
Common shareholder's equity	3,561.1	3,460.8
Preferred stock	30.4	30.4
Total liabilities and equity	$ 13,360.8	$ 13,538.3