Consolidated Condensed Balance Sheets (Unaudited) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment
In service	$ 10,597.5	$ 10,544.4
Accumulated depreciation	(3,456.8)	(3,406.1)
Property, Plant and Equipment in Service, Net	7,140.7	7,138.3
Construction work in progress	173.1	140.9
Leased facilities, net	2,190.0	2,215.0
Net Property, Plant and Equipment	9,503.8	9,494.2
Investments
Equity investment in transmission affiliate	379.0	372.9
Other	0.3	0.2
Total Investments	379.3	373.1
Current Assets
Cash and cash equivalents	15.3	24.0
Accounts receivable, net	308.3	265.3
Accounts receivable from related parties	2.8	8.1
Accrued revenues	182.6	223.1
Materials, supplies and inventories	276.1	320.5
Deferred Tax Assets, Net, Current	57.0	46.7
Prepayments and other	125.8	158.5
Total Current Assets	967.9	1,046.2
Deferred Charges and Other Assets
Regulatory assets	1,652.7	1,626.9
Other	156.5	106.3
Total Deferred Charges and Other Assets	1,809.2	1,733.2
Total Assets	12,660.2	12,646.7
Capitalization
Common equity	3,478.4	3,412.8
Preferred stock	30.4	30.4
Long-term debt	2,166.0	2,165.5
Capital lease obligations	2,701.6	2,712.5
Total Capitalization	8,376.4	8,321.2
Current Liabilities
Long-term debt and capital lease obligations due currently	360.6	355.6
Short-term debt	316.5	306.8
Subsidiary note payable to Wisconsin Energy	20.1	22.4
Accounts payable	237.0	287.2
Accounts payable to related parties	89.0	87.8
Accrued payroll and benefits	53.4	87.1
Other	195.8	113.7
Total Current Liabilities	1,272.4	1,260.6
Deferred Credits and Other Liabilities
Regulatory liabilities	611.2	615.9
Deferred income taxes - long term	1,985.6	1,963.9
Pension and other benefit obligations	190.9	254.5
Other	223.7	230.6
Total Deferred Credits and Other Liabilities	3,011.4	3,064.9
Total Capitalization and Liabilities	$ 12,660.2	$ 12,646.7