VARIABLE INTEREST ENTITIES - WEPCO ENVIRONMENTAL TRUST (Details) - USD ($) $ in Millions |
Sep. 30, 2026 |
Dec. 31, 2025 |
Nov. 01, 2020 |
|---|---|---|---|
| Assets | |||
| Other current assets (restricted cash) | $ 43.9 | $ 9.1 | |
| Regulatory assets | 3,140.7 | 3,156.3 | |
| Other long-term assets (restricted cash) | 27.8 | 34.2 | |
| Liabilities | |||
| Current portion of long-term debt | 1,134.5 | 1,519.4 | |
| Accounts payable | 1,119.2 | 1,140.1 | |
| Long-term debt | 19,717.2 | 18,498.1 | |
| WEPCo Environmental Trust Finance I, LLC | |||
| Variable interest entities | |||
| Securitization of environmental control costs related to Pleasant Prairie power plant | $ 100.0 | ||
| Assets | |||
| Other current assets (restricted cash) | 4.6 | 2.0 | |
| Regulatory assets | 60.9 | 67.5 | |
| Other long-term assets (restricted cash) | 0.6 | 0.6 | |
| Liabilities | |||
| Current portion of long-term debt | 9.4 | 9.3 | |
| Accounts payable | 0.0 | 0.1 | |
| Other current liabilities (accrued interest) | 0.3 | 0.1 | |
| Long-term debt | $ 62.8 | $ 67.4 |
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- Definition Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- References No definition available.
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- Definition Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- References No definition available.
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- Definition Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt classified as current. Excludes lease obligation. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt classified as noncurrent. Excludes lease obligation. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are not expected to be recovered through revenue sources within one year or the normal operating cycle if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of cash restricted as to withdrawal or usage, classified as current. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of cash restricted as to withdrawal or usage, classified as noncurrent. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Carrying value of the regulatory asset that represents capitalized costs that have been or will be securitized (financed with debt) and are expected to be recoverable through a charge approved by a regulator. No definition available.
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