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v3.21.1

Revenue (Components of Operating Revenue) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Disaggregation of Revenue [Line Items] |  |
Revenue recognized from contracts with customers | $ 1,962 | $ 1,758
Leasing income | 46 | 39
Financing income | 75 | 67
Total operating revenue | 2,083 | 1,864
Electric Utility | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue recognized from contracts with customers | 1,131 | 1,025
Financing income | 3 | 3
Total operating revenue | 1,134 | 1,028
Gas Utility | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue recognized from contracts with customers | 801 | 714
Financing income | 2 | 2
Total operating revenue | 803 | 716
Enterprises | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue recognized from contracts with customers | 30 | 19
Leasing income | 46 | 39
Total operating revenue | 76 | 58
Variable lease income | 33 | 25
EnerBank | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Financing income | 70 | 62
Total operating revenue | 70 | 62
Consumers Energy Company |  |
Disaggregation of Revenue [Line Items] |  |
Revenue recognized from contracts with customers | 1,932 | 1,739
Financing income | 5 | 5
Total operating revenue | 1,937 | 1,744
Consumers Energy Company | Electric Utility | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue recognized from contracts with customers | 1,131 | 1,025
Financing income | 3 | 3
Total operating revenue | 1,134 | 1,028
Consumers Energy Company | Gas Utility | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue recognized from contracts with customers | 801 | 714
Financing income | 2 | 2
Total operating revenue | 803 | 716
Residential | Consumers Energy Company |  |
Disaggregation of Revenue [Line Items] |  |
Revenue recognized from contracts with customers | 1,122 | 974
Residential | Consumers Energy Company | Electric Utility | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue recognized from contracts with customers | 568 | 481
Residential | Consumers Energy Company | Gas Utility | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue recognized from contracts with customers | 554 | 493
Commercial | Consumers Energy Company |  |
Disaggregation of Revenue [Line Items] |  |
Revenue recognized from contracts with customers | 508 | 488
Commercial | Consumers Energy Company | Electric Utility | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue recognized from contracts with customers | 345 | 339
Commercial | Consumers Energy Company | Gas Utility | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue recognized from contracts with customers | 163 | 149
Industrial | Consumers Energy Company |  |
Disaggregation of Revenue [Line Items] |  |
Revenue recognized from contracts with customers | 161 | 160
Industrial | Consumers Energy Company | Electric Utility | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue recognized from contracts with customers | 138 | 140
Industrial | Consumers Energy Company | Gas Utility | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue recognized from contracts with customers | 23 | 20
Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenue recognized from contracts with customers | 30 | 19
Other | Enterprises | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue recognized from contracts with customers | 30 | 19
Other | Consumers Energy Company |  |
Disaggregation of Revenue [Line Items] |  |
Revenue recognized from contracts with customers | 141 | 117
Other | Consumers Energy Company | Electric Utility | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue recognized from contracts with customers | 80 | 65
Other | Consumers Energy Company | Gas Utility | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue recognized from contracts with customers | $ 61 | $ 52

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- Definition Amount of lease income from operating, direct financing, and sales-type leases. Includes, but is not limited to, variable lease payments, interest income, profit (loss) recognized at commencement, and lease payments paid and payable to lessor. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=121576215&loc=SL77919372-209981 + Details
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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9031-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9038-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130543-203045 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9054-108599 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130545-203045 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 924 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 11.L) -URI http://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856 + Details
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