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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, 2023 | Dec. 31, 2022
Finance Leases and Other Financing Obligations, Rollforward [Roll Forward] |  |
Balance at beginning of period | $ 170 | $ 332
Additions | 0 | 44
Net retirements and other adjustments | (34) | (206)
Balance at end of period | 136 | 170
Consumers Energy Company |  |
Finance Leases and Other Financing Obligations, Rollforward [Roll Forward] |  |
Balance at beginning of period | 146 | 332
Additions | 0 | 20
Net retirements and other adjustments | (34) | (206)
Balance at end of period | $ 112 | $ 146

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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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