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Consolidated Balance Sheets (USD $)
In Millions, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Current Assets:    
Cash and Cash Equivalents $ 9.4 $ 9.8
Accounts Receivable, net 52.2 47.7
Accrued Revenue 56.6 63.4
Exchange Gas Receivable 10.8 9.4
Gas Inventory 1.2 1.1
Material and Supplies 5.0 4.1
Prepayments and Other 4.8 4.2
Total Current Assets 140.0 139.7
Utility Plant:    
Gas 477.3 424.4
Electric 375.6 356.9
Common 31.6 30.9
Construction Work in Progress 24.6 21.0
Utility Plant 909.1 833.2
Less: Accumulated Depreciation 243.5 232.0
Net Utility Plant 665.6 601.2
Other Noncurrent Assets:    
Regulatory Assets 100.1 134.6
Other Assets 14.9 16.8
Total Other Noncurrent Assets 115.0 151.4
TOTAL ASSETS 920.6 892.3
Current Liabilities:    
Accounts Payable 38.1 32.7
Short-Term Debt 60.2 49.4
Long-Term Debt, Current Portion 2.5 0.5
Energy Supply Obligations 14.4 13.8
Deferred Income Taxes 6.7 13.4
Interest Payable 3.1 3.1
Regulatory liabilities 9.7 6.8
Other Current Liabilities 10.0 11.4
Total Current Liabilities 144.7 131.1
Noncurrent Liabilities:    
Energy Supply Obligations 2.5 3.3
Deferred Income Taxes 73.2 38.7
Cost of Removal Obligations 57.3 51.4
Retirement Benefit Obligations 77.3 103.7
Environmental Obligations 13.8 13.8
Other Noncurrent Liabilities 1.8 2.4
Total Noncurrent Liabilities 225.9 213.3
Capitalization:    
Long-Term Debt, Less Current Portion 284.8 287.3
Common Stock Equity:    
Common Equity 232.1 230.0
Retained Earnings 32.9 30.4
Total Common Stock Equity 265.0 260.4
Preferred Stock 0.2 0.2
Total Capitalization 550.0 547.9
TOTAL LIABILITIES AND CAPITALIZATION $ 920.6 $ 892.3