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CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Millions
Mar. 31, 2021
Dec. 31, 2020
Mar. 31, 2020
Current Assets:      
Cash and Cash Equivalents $ 6.1 $ 6.0 $ 6.2
Accounts Receivable, Net 73.2 62.0 62.6
Accrued Revenue 34.7 50.9 38.6
Exchange Gas Receivable 1.2 4.9 2.2
Gas Inventory 0.4 0.6 0.4
Materials and Supplies 9.2 8.5 9.2
Prepayments and Other 7.9 6.4 6.6
Total Current Assets 132.7 139.3 125.8
Utility Plant:      
Gas 922.4 920.2 869.7
Electric 576.8 575.9 538.4
Common 64.5 64.1 62.8
Construction Work in Progress 38.3 34.8 43.3
Total Utility Plant 1,602.0 1,595.0 1,514.2
Less: Accumulated Depreciation 409.7 401.8 389.1
Net Utility Plant 1,192.3 1,193.2 1,125.1
Other Noncurrent Assets:      
Regulatory Assets 128.7 127.4 105.3
Operating Lease Right of Use Assets 5.4 5.2 4.9
Other Assets 17.9 12.8 17.3
Total Other Noncurrent Assets 152.0 145.4 127.5
TOTAL ASSETS 1,477.0 1,477.9 1,378.4
Current Liabilities:      
Accounts Payable 28.7 33.2 26.5
Short-Term Debt 37.3 54.7 71.6
Long-Term Debt, Current Portion 8.5 8.5 6.3
Regulatory Liabilities 14.7 5.5 10.5
Energy Supply Obligations 7.7 10.4 7.9
Interest Payable 6.8 5.0 7.2
Environmental Obligations 0.3 0.3 0.3
Other Current Liabilities 18.9 18.5 16.8
Total Current Liabilities 122.9 136.1 147.1
Noncurrent Liabilities:      
Retirement Benefit Obligations 164.8 162.3 145.4
Deferred Income Taxes, Net 115.4 109.0 108.7
Cost of Removal Obligations 102.5 105.2 98.8
Regulatory Liabilities 43.5 44.3 45.1
Environmental Obligations 1.8 1.8 1.9
Other Noncurrent Liabilities 7.0 6.9 7.2
Total Noncurrent Liabilities 435.0 429.5 407.1
Capitalization:      
Long-Term Debt, Less Current Portion 515.8 523.1 436.3
Stockholders' Equity:      
Common Equity (Authorized: 25,000,000 and Outstanding:15,041,629, 14,963,444 and 15,012,310 Shares) 286.3 285.3 284.0
Retained Earnings 116.8 103.7 103.7
Total Common Stock Equity 403.1 389.0 387.7
Preferred Stock 0.2 0.2 0.2
Total Stockholders' Equity 403.3 389.2 387.9
Total Capitalization 919.1 912.3 824.2
Commitments and Contingencies (Notes 6 & 7)    
TOTAL LIABILITIES AND CAPITALIZATION $ 1,477.0 $ 1,477.9 $ 1,378.4