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Consolidated Balance Sheets (USD $)
In Millions, unless otherwise specified
Mar. 31, 2012
Dec. 31, 2011
Mar. 31, 2011
Utility Plant:      
Electric $ 339.6 $ 333.3 $ 325.1
Gas 390.0 382.3 362.3
Common 29.9 29.8 30.7
Construction Work in Progress 21.0 28.3 13.9
Total Utility Plant 780.5 773.7 732.0
Less: Accumulated Depreciation 268.3 263.0 256.0
Net Utility Plant 512.2 510.7 476.0
Current Assets:      
Cash 8.2 7.5 6.6
Accounts Receivable, Net 47.9 44.2 45.7
Accrued Revenue 37.4 56.6 33.9
Gas Inventory 6.8 14.8 0.7
Materials and Supplies 3.9 3.6 3.4
Prepayments and Other 5.0 4.5 4.4
Total Current Assets 109.2 131.2 94.7
Noncurrent Assets:      
Regulatory Assets 141.4 139.8 139.6
Other Noncurrent Assets 20.4 18.5 26.4
Total Noncurrent Assets 161.8 158.3 166.0
TOTAL 783.2 800.2 736.7
Capitalization:      
Common Stock Equity 193.6 191.7 190.5
Preferred Stock 2.0 2.0 2.0
Long-Term Debt, Less Current Portion 287.7 287.8 288.2
Total Capitalization 483.3 481.5 480.7
Current Liabilities:      
Long-Term Debt, Current Portion 0.5 0.5 0.5
Accounts Payable 18.7 26.4 22.5
Short-Term Debt 77.6 87.9 50.6
Energy Supply Contract Obligations 12.6 21.1 9.1
Taxes Payable 0.4 1.0 0.1
Other Current Liabilities 22.4 17.5 21.1
Total Current Liabilities 132.2 154.4 103.9
Deferred Income Taxes 52.1 46.3 48.7
Noncurrent Liabilities:      
Energy Supply Contract Obligations 4.0 4.2 10.4
Retirement Benefit Obligations 89.5 91.2 70.3
Environmental Obligations 14.5 14.5 14.5
Other Noncurrent Liabilities 7.6 8.1 8.2
Total Noncurrent Liabilities 115.6 118.0 103.4
TOTAL $ 783.2 $ 800.2 $ 736.7