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Consolidated Balance Sheets - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Property, Plant and Equipment    
Plant $ 30,482.1 $ 27,551.3
Accumulated depreciation and amortization (8,207.2) (7,708.7)
Net Property, Plant and Equipment [1] 22,274.9 19,842.6
Investments and Other Assets    
Unconsolidated affiliates 5.3 1.6
Available-for-sale debt securities (amortized cost of $169.0 and $166.7, allowance for credit losses of $0.6 and $0.9, respectively) 159.1 151.6
Other investments 82.7 71.0
Total Investments and Other Assets 247.1 224.2
Current Assets    
Cash and cash equivalents 2,245.4 40.8
Restricted cash 35.7 34.6
Accounts receivable 884.9 1,065.8
Allowance for credit losses (22.9) (23.9)
Accounts receivable, net 862.0 1,041.9
Gas inventory 265.8 531.7
Materials and supplies, at average cost 172.1 151.4
Electric production fuel, at average cost 65.3 68.8
Exchange gas receivable 66.0 128.1
Regulatory assets 214.3 233.2
Deposits to renewable generation asset developer 454.2 143.8
Prepayments and other 118.6 210.0
Total Current Assets [1] 4,499.4 2,584.3
Other Assets    
Regulatory assets 2,245.9 2,347.6
Goodwill 1,485.9 1,485.9
Deferred charges and other 324.0 252.0
Total Other Assets 4,055.8 4,085.5
Total Assets 31,077.2 26,736.6
Stockholders' Equity    
Common stock - $0.01 par value, 750,000,000 shares authorized; 447,381,671 and 412,142,602 shares outstanding, respectively 4.5 4.2
Preferred stock - $0.01 par value, 20,000,000 shares authorized; 40,000 and 1,302,500 shares outstanding, respectively 486.1 1,546.5
Treasury stock (99.9) (99.9)
Additional paid-in capital 8,879.5 7,375.3
Retained deficit (967.0) (1,213.6)
Accumulated other comprehensive loss (33.6) (37.1)
Total NiSource Stockholders' Equity 8,269.6 7,575.4
Noncontrolling interest in consolidated subsidiaries 1,866.7 326.4
Total Stockholders’ Equity 10,136.3 7,901.8
Long-term debt, excluding amounts due within one year 11,055.5 9,523.6
Total Capitalization 21,191.8 17,425.4
Current Liabilities    
Current portion of long-term debt 23.8 30.0
Short-term borrowings 3,048.6 1,761.9
Accounts payable 749.4 899.5
Customer deposits and credits 294.4 324.7
Taxes accrued 166.2 246.2
Interest accrued 136.1 138.4
Exchange gas payable 50.5 147.6
Regulatory liabilities 278.6 236.8
Accrued compensation and employee benefits 227.6 167.5
Other accruals 217.4 325.2
Total Current Liabilities 5,265.1 4,660.5
Other Liabilities    
Deferred Income Tax Liabilities, Net 2,080.4 1,854.5
Accrued liability for postretirement and postemployment benefits 250.1 245.5
Regulatory liabilities 1,510.7 1,775.8
Asset retirement obligations 480.5 478.1
Other noncurrent liabilities 298.6 296.8
Total Other Liabilities(1) 4,620.3 4,650.7
Total Capitalization and Liabilities 31,077.2 26,736.6
Obligations to renewable generation asset developer 0.0 347.2
Asset Retirement Obligation, Current $ 72.5 $ 35.5
[1]
(1)Includes $1,369.8 million and $978.5 million in 2023 and 2022, respectively, of net property, plant and equipment assets and $63.6 million and $25.7 million in 2023 and 2022, respectively, of current assets of consolidated VIEs that may be used only to settle obligations of the consolidated VIEs. Refer to Note 4, "Noncontrolling Interest," for additional information.