Consolidated Condensed Balance Sheets (Unaudited) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Property, Plant and Equipment
In service	$ 14,086.9	$ 12,977.7
Accumulated depreciation	(3,972.4)	(3,797.8)
Property, Plant and Equipment in Service, Net	10,114.5	9,179.9
Construction work in progress	269.4	921.3
Leased facilities, net	54.9	59.2
Net Property, Plant and Equipment	10,438.8	10,160.4
Investments
Equity investment in transmission affiliate	372.5	349.7
Other	36.4	43.6
Total Investments	408.9	393.3
Current Assets
Cash and cash equivalents	13.0	14.1
Restricted cash	9.5	45.5
Accounts receivable, net	298.6	349.4
Income taxes receivable	48.4	155.1
Accrued revenues	178.5	252.7
Materials, supplies and inventories	342.1	382.0
Prepayments and other	194.7	227.4
Total Current Assets	1,084.8	1,426.2
Deferred Charges and Other Assets
Regulatory assets	1,280.4	1,238.7
Goodwill	441.9	441.9
Other	179.9	201.6
Total Deferred Charges and Other Assets	1,902.2	1,882.2
Total Assets	13,834.7	13,862.1
Capitalization
Common equity	4,147.2	3,963.3
Preferred stock of subsidiary	30.4	30.4
Long-term debt	4,240.6	4,614.3
Total Capitalization	8,418.2	8,608.0
Current Liabilities
Long-term debt due currently	381.1	32.6
Short-term debt	453.2	669.9
Accounts payable	277.7	325.7
Accrued payroll and benefits	101.5	105.9
Other	173.5	230.4
Total Current Liabilities	1,387.0	1,364.5
Deferred Credits and Other Liabilities
Regulatory liabilities	872.9	902.0
Deferred income taxes - long-term	1,994.2	1,696.1
Deferred revenue, net	714.1	754.5
Pension and other benefit obligations	149.6	222.7
Other	298.7	314.3
Total Deferred Credits and Other Liabilities	4,029.5	3,889.6
Total Capitalization and Liabilities	$ 13,834.7	$ 13,862.1