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Consolidated Balance Sheets - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Current assets:    
Cash and cash equivalents $ 16.1 $ 86.6
Restricted cash and equivalents 7.3 6.4
Accounts receivable, net 351.2 350.3
Materials, supplies and fuel 153.9 160.9
Income tax receivable, net 19.8 18.5
Regulatory assets, current 154.8 175.7
Other current assets 39.2 28.2
Total current assets 742.3 826.6
Property, plant and equipment 9,566.5 8,917.2
Less accumulated depreciation and depletion (1,936.6) (1,797.9)
Total property, plant and equipment, net 7,629.9 7,119.3
Other assets:    
Goodwill 1,299.5 1,299.5
Intangible assets, net 7.6 8.4
Regulatory assets, non-current 272.9 304.4
Other assets, non-current 70.4 62.2
Total other assets, non-current 1,650.4 1,674.5
TOTAL ASSETS 10,022.6 9,620.4
Current liabilities:    
Accounts payable 229.1 186.4
Accrued liabilities 302.2 293.3
Derivative liabilities, current 4.2 6.5
Regulatory liabilities, current 94.1 98.9
Notes payable 133.8 0.0
Current maturities of long-term debt 0.0 600.0
Total current liabilities 763.4 1,185.1
Long-term debt, net of current maturities 4,250.2 3,801.2
Deferred credits and other liabilities:    
Deferred income tax liabilities, net 625.1 548.0
Regulatory liabilities, non-current 474.6 467.7
Benefit plan liabilities 122.9 123.9
Other deferred credits and other liabilities 201.2 188.7
Total deferred credits and other liabilities 1,423.8 1,328.3
Commitments, contingencies and guarantees (Note 3)
Equity:    
Common stock $1.00 par value; 100,000,000 shares authorized; issued: 71,676,756 and 68,265,042, respectively 71.7 68.3
Additional paid-in capital 2,193.4 2,007.7
Retained earnings 1,249.1 1,158.2
Treasury stock at cost - 56,608 and 68,073, respectively (3.3) (4.1)
Accumulated other comprehensive income (loss) (9.4) (14.8)
Total stockholders’ equity 3,501.5 3,215.3
Non-controlling interest 83.7 90.5
Total equity 3,585.2 3,305.8
TOTAL LIABILITIES AND TOTAL EQUITY $ 10,022.6 $ 9,620.4