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Consolidated Balance Sheets - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Property, Plant and Equipment    
Plant $ 34,152.9 $ 30,482.1
Accumulated depreciation and amortization (8,699.0) (8,207.2)
Net Property, Plant and Equipment [1] 25,453.9 22,274.9
Investments and Other Assets    
Unconsolidated affiliates 6.5 5.3
Available-for-sale debt securities (amortized cost of $91.9 and $169.0, allowance for credit losses of $0.1 and $0.6, respectively) 86.7 159.1
Other investments 85.5 82.7
Total Investments and Other Assets 178.7 247.1
Current Assets    
Cash and cash equivalents 156.6 2,245.4
Restricted cash 42.0 35.7
Accounts receivable 987.9 884.9
Allowance for credit losses (23.7) (22.9)
Accounts receivable, net 964.2 862.0
Gas inventory 179.6 265.8
Materials and supplies, at average cost 173.3 172.1
Electric production fuel, at average cost 36.2 65.3
Exchange gas receivable 45.7 66.0
Regulatory assets 319.9 214.3
Deposits to renewable generation asset developer 0.0 454.2
Other Assets 138.5 105.5
Prepayments and other 24.2 13.1
Total Current Assets [1] 2,080.2 4,499.4
Other Assets    
Regulatory assets 2,157.4 2,245.9
Goodwill 1,485.9 1,485.9
Deferred charges and other 432.0 324.0
Total Other Assets 4,075.3 4,055.8
Total Assets 31,788.1 31,077.2
Stockholders' Equity    
Common stock - $0.01 par value, 750,000,000 shares authorized; 469,822,472 and 447,381,671 shares outstanding, respectively 4.7 4.5
Preferred stock - $0.01 par value, 20,000,000 shares authorized; 0 and 40,000 shares outstanding, respectively 0.0 486.1
Treasury stock (99.9) (99.9)
Additional paid-in capital 9,521.5 8,879.5
Retained deficit (711.7) (967.0)
Accumulated other comprehensive loss (30.4) (33.6)
Total NiSource Stockholders' Equity 8,684.2 8,269.6
Noncontrolling interest in consolidated subsidiaries 1,984.1 1,866.7
Total Stockholders’ Equity 10,668.3 10,136.3
Long-term debt, excluding amounts due within one year 12,074.5 11,055.5
Total Capitalization 22,742.8 21,191.8
Current Liabilities    
Current portion of long-term debt 1,281.2 23.8
Short-term borrowings 604.6 3,048.6
Accounts payable 863.1 749.4
Customer deposits and credits 268.8 294.4
Taxes accrued 173.4 166.2
Interest accrued 157.0 136.1
Asset retirement obligations 84.6 72.5
Exchange gas payable 91.8 50.5
Regulatory liabilities 150.5 278.6
Accrued compensation and employee benefits 268.2 227.6
Other accruals 170.2 217.4
Total Current Liabilities 4,113.4 5,265.1
Other Liabilities    
Deferred income taxes 2,281.6 2,080.4
Accrued liability for postretirement and postemployment benefits 207.5 250.1
Regulatory liabilities 1,431.2 1,510.7
Asset retirement obligations 698.6 480.5
Other noncurrent liabilities 313.0 298.6
Total Other Liabilities(1) 4,931.9 4,620.3
Total Capitalization and Liabilities $ 31,788.1 $ 31,077.2
[1]
(1)Includes $1,323.8 million and $1,369.8 million in 2024 and 2023, respectively, of net property, plant and equipment assets, $65.0 million and $63.6 million in 2024 and 2023, respectively, of current assets of consolidated VIEs that may be used only to settle obligations of the consolidated VIEs. Refer to Note 4, "Noncontrolling Interests," for additional information.