Consolidated Condensed Balance Sheets (Unaudited) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment
In service	$ 15,043.7	$ 14,966.3
Accumulated depreciation	(4,323.8)	(4,257.1)
Property, Plant and Equipment in Service, Net	10,719.9	10,709.2
Construction work in progress	175.4	149.6
Leased facilities, net	46.4	47.8
Net Property, Plant and Equipment	10,941.7	10,906.6
Investments
Equity investment in transmission affiliate	409.6	402.7
Other	35.8	36.1
Total Investments	445.4	438.8
Current Assets
Cash and cash equivalents	27.6	26.0
Accounts receivable, net	605.8	406.0
Accrued revenues	289.2	321.1
Materials, supplies and inventories	234.9	329.4
Current deferred tax asset, net	261.4	310.0
Prepayments and other	126.1	158.6
Total Current Assets	1,545.0	1,551.1
Deferred Charges and Other Assets
Regulatory assets	1,098.0	1,108.5
Goodwill	441.9	441.9
Other	328.8	322.5
Total Deferred Charges and Other Assets	1,868.7	1,872.9
Total Assets	14,800.8	14,769.4
Capitalization
Common equity	4,322.0	4,233.0
Preferred stock of subsidiary	30.4	30.4
Long-term debt	4,348.8	4,363.2
Total Capitalization	8,701.2	8,626.6
Current Liabilities
Long-term debt due currently	343.8	342.2
Short-term debt	422.2	537.4
Accounts payable	435.0	342.6
Accrued payroll and benefits	73.3	96.9
Other	150.3	177.3
Total Current Liabilities	1,424.6	1,496.4
Deferred Credits and Other Liabilities
Regulatory liabilities	874.4	879.1
Deferred income taxes - long-term	2,699.0	2,634.0
Deferred revenue, net	651.9	664.2
Pension and other benefit obligations	169.5	173.2
Other	280.2	295.9
Total Deferred Credits and Other Liabilities	4,675.0	4,646.4
Total Capitalization and Liabilities	$ 14,800.8	$ 14,769.4