v3.25.4

Revenue (Disaggregation of Revenue) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Disaggregation of Revenue [Line Items] |  |  |
Revenue recognized from contracts with customers | $ 8,305 | $ 7,320 | $ 7,261
Leasing income | 149 | 105 | 116
Financing income | 16 | 15 | 16
Total operating revenue | 8,539 | 7,515 | 7,462
Operating Segments |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total operating revenue | 8,539 | 7,515 | 7,462
Electric Utility | Operating Segments |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue recognized from contracts with customers | 5,578 | 4,995 | 4,686
Financing income | 10 | 10 | 10
Total operating revenue | 5,638 | 5,061 | 4,745
Gas Utility | Operating Segments |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue recognized from contracts with customers | 2,468 | 2,114 | 2,394
Financing income | 6 | 5 | 6
Total operating revenue | 2,493 | 2,138 | 2,420
NorthStar Clean Energy | Operating Segments |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue recognized from contracts with customers | 259 | 211 | 181
Leasing income | 149 | 105 | 116
Total operating revenue | 408 | 316 | 297
Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue recognized from contracts with customers | 259 | 211 | 181
Other | NorthStar Clean Energy | Operating Segments |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue recognized from contracts with customers | 259 | 211 | 181
Consumers Energy Company |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue recognized from contracts with customers | 8,046 | 7,109 | 7,080
Financing income | 16 | 15 | 16
Alternative-revenue programs | 69 | 75 | 69
Other non-segment revenue | 1 | 1 | 1
Total operating revenue | 8,132 | 7,200 | 7,166
Consumers Energy Company | Operating Segments |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total operating revenue | 8,131 | 7,199 | 7,165
Consumers Energy Company | Electric Utility | Operating Segments |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue recognized from contracts with customers | 5,578 | 4,995 | 4,686
Financing income | 10 | 10 | 10
Alternative-revenue programs | 50 | 56 | 49
Total operating revenue | 5,638 | 5,061 | 4,745
Consumers Energy Company | Gas Utility | Operating Segments |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue recognized from contracts with customers | 2,468 | 2,114 | 2,394
Financing income | 6 | 5 | 6
Alternative-revenue programs | 19 | 19 | 20
Total operating revenue | 2,493 | 2,138 | 2,420
Consumers Energy Company | Residential |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue recognized from contracts with customers | 4,362 | 3,747 | 3,855
Consumers Energy Company | Residential | Electric Utility | Operating Segments |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue recognized from contracts with customers | 2,661 | 2,318 | 2,236
Consumers Energy Company | Residential | Gas Utility | Operating Segments |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue recognized from contracts with customers | 1,701 | 1,429 | 1,619
Consumers Energy Company | Commercial |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue recognized from contracts with customers | 2,426 | 2,114 | 2,039
Consumers Energy Company | Commercial | Electric Utility | Operating Segments |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue recognized from contracts with customers | 1,888 | 1,674 | 1,550
Consumers Energy Company | Commercial | Gas Utility | Operating Segments |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue recognized from contracts with customers | 538 | 440 | 489
Consumers Energy Company | Industrial |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue recognized from contracts with customers | 824 | 720 | 720
Consumers Energy Company | Industrial | Electric Utility | Operating Segments |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue recognized from contracts with customers | 762 | 670 | 660
Consumers Energy Company | Industrial | Gas Utility | Operating Segments |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue recognized from contracts with customers | 62 | 50 | 60
Consumers Energy Company | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue recognized from contracts with customers | 434 | 528 | 466
Consumers Energy Company | Other | Electric Utility | Operating Segments |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue recognized from contracts with customers | 267 | 333 | 240
Consumers Energy Company | Other | Gas Utility | Operating Segments |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue recognized from contracts with customers | $ 167 | $ 195 | $ 226

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