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Plant, Property, and Equipment (Schedule of Finance Leases and Other Financing Obligations) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023
Finance Leases and Other Financing Obligations, Rollforward [Roll Forward] |  |
Balance at beginning of period | $ 136 | $ 170
Additions | 55 | 0
Net retirements and other adjustments | (15) | (34)
Balance at end of period | 176 | 136
Consumers Energy Company |  |
Finance Leases and Other Financing Obligations, Rollforward [Roll Forward] |  |
Balance at beginning of period | 112 | 146
Additions | 34 | 0
Net retirements and other adjustments | (15) | (34)
Balance at end of period | $ 131 | $ 112

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- Definition Finance Lease Asset, Net Retirements And Adjustments + References No definition available. + Details
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- Definition Finance Lease Assets, Additions + References No definition available. + Details
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- Definition Amount, before accumulated amortization, of right-of-use asset from finance lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (a) -SubTopic 20 -Topic 842 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-1 + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Details
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