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Consolidated Balance Sheets (USD $)
In Millions, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Utility Plant:    
Electric $ 333.3 $ 321.5
Gas 382.3 360.1
Common 29.8 30.2
Construction Work in Progress 28.3 16.6
Utility Plant 773.7 728.4
Less: Accumulated Depreciation 263.0 251.9
Net Utility Plant 510.7 476.5
Current Assets:    
Cash 7.5 8.9
Accounts Receivable, net 44.2 36.9
Accrued Revenue 56.6 46.7
Refundable Taxes   7.5
Gas Inventory 14.8 10.6
Material and Supplies 3.6 2.9
Prepayments and Other 4.5 3.6
Total Current Assets 131.2 117.1
Noncurrent Assets:    
Regulatory Assets 139.8 143.0
Other Noncurrent Assets 18.5 23.0
Total Noncurrent Assets 158.3 166.0
TOTAL ASSETS 800.2 759.6
Capitalization:    
Common Stock Equity 191.7 189.0
Preferred Stock 2.0 2.0
Long-Term Debt, Less Current Portion 287.8 288.3
Total Capitalization 481.5 479.3
Current Liabilities:    
Long-Term Debt, Current Portion 0.5 0.5
Accounts Payable 26.4 26.5
Short-Term Debt 87.9 66.8
Energy Supply Contract Obligations 21.1 17.0
Taxes Payable 1.0  
Other Current Liabilities 17.5 16.1
Total Current Liabilities 154.4 126.9
Deferred Income Taxes 46.3 43.8
Noncurrent Liabilities:    
Energy Supply Contract Obligations 4.2 12.6
Retirement Benefit Obligations 91.2 74.0
Environmental Obligations 14.5 14.5
Other Noncurrent Liabilities 8.1 8.5
Total Noncurrent Liabilities 118.0 109.6
TOTAL CAPITALIZATION AND LIABILITIES $ 800.2 $ 759.6