Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Current Assets
Cash and cash equivalents	$ 15.4	$ 27.1
Accounts receivable, net of allowance for doubtful accounts of $40.9 and $43.0, respectively	503.2	461.4
Accounts receivable from related parties	58.2	41.1
Materials, supplies and inventories	271.0	301.6
Prepayments	138.0	171.8
Other	24.6	19.6
Total current assets	1,010.4	1,022.6
Long-term assets
Property, plant, and equipment, net of accumulated depreciation of $3,619.6 and $3,461.9, respectively	9,832.3	9,767.5
Regulatory assets	2,036.6	1,855.9
Equity investment in transmission affiliate	402.0	382.2
Other	90.2	111.4
Long-term assets	12,361.1	12,117.0
Total Assets	13,371.5	13,139.6
Current Liabilities
Short-term debt	159.0	144.0
Current portion of capital lease obligations	28.5	123.6
Subsidiary note payable to WEC Energy Group	18.5	19.6
Accounts payable	297.9	286.4
Accounts payable to related parties	112.9	95.7
Accrued payroll and benefits	51.8	87.5
Accrued taxes	46.0	15.6
Other	100.1	100.1
Current liabilities	814.7	872.5
Long-term liabilities
Long-term debt	2,661.1	2,658.8
Capital lease obligations	2,756.5	2,692.5
Deferred income taxes	2,333.3	2,110.0
Regulatory liabilities	853.9	741.2
Pension and OPEB obligations	167.6	210.9
Other	260.2	259.3
Long-term liabilities	9,032.6	8,672.7
Commitments and contingencies (Note 16)
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	1,020.1	999.7
Retained earnings	2,140.8	2,231.4
Common shareholder's equity	3,493.8	3,564.0
Preferred stock	30.4	30.4
Total liabilities and equity	$ 13,371.5	$ 13,139.6