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CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Current assets |  |
Cash and cash equivalents | $ 38.9 | $ 42.9
Accounts receivable and unbilled revenues, net of reserves of $190.7 and $193.5, respectively | 1,557.0 | 1,503.2
Materials, supplies, and inventories | 608.6 | 775.2
Prepaid taxes | 143.0 | 173.9
Other prepayments | 70.9 | 76.8
Other | 186.2 | 223.7
Current assets | 2,604.6 | 2,795.7
Long-term assets |  |
Property, plant, and equipment, net of accumulated depreciation and amortization of $11,275.0 and $11,073.1, respectively | 31,729.8 | 31,581.5
Regulatory assets (March 31, 2024 and December 31, 2023 include $84.1 and $85.9, respectively, related to WEPCo Environmental Trust) | 3,247.0 | 3,249.8
Equity investment in transmission affiliates | 2,027.1 | 2,005.9
Goodwill | 3,052.8 | 3,052.8
Pension and OPEB assets | 883.9 | 870.9
Other | 382.0 | 383.1
Long-term assets | 41,322.6 | 41,144.0
Total assets | 43,927.2 | 43,939.7
Current liabilities |  |
Short-term debt | 2,574.2 | 2,020.9
Current portion of long-term debt (March 31, 2024 and December 31, 2023 include $9.0, related to WEPCo Environmental Trust) | 640.5 | 1,264.2
Accounts payable | 640.9 | 896.6
Other | 854.1 | 933.1
Current liabilities | 4,709.7 | 5,114.8
Long-term liabilities |  |
Long-term debt (March 31, 2024 and December 31, 2023 include $85.4 and $85.3, respectively, related to WEPCo Environmental Trust) | 15,375.8 | 15,512.8
Deferred income taxes | 5,120.0 | 4,918.5
Deferred revenue, net | 351.1 | 356.4
Regulatory liabilities | 3,730.2 | 3,697.7
Intangible liabilities | 581.4 | 594.8
Environmental remediation liabilities | 448.9 | 463.7
AROs | 377.7 | 374.2
Other | 806.3 | 835.3
Long-term liabilities | 26,791.4 | 26,753.4
Commitments and contingencies (Note 20) |  |
Common shareholders' equity |  |
Common stock – $0.01 par value; 325,000,000 shares authorized; 315,822,587 and 315,434,531 shares outstanding, respectively | 3.2 | 3.2
Additional paid in capital | 4,145.7 | 4,115.9
Retained earnings | 7,971.6 | 7,612.8
Accumulated other comprehensive loss | (7.8) | (7.7)
Common shareholders' equity | 12,112.7 | 11,724.2
Preferred stock of subsidiary | 30.4 | 30.4
Noncontrolling interests | 283.0 | 316.9
Total liabilities and equity | $ 43,927.2 | $ 43,939.7

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