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Reportable Segments | 6 Months Ended
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Jun. 30, 2021
Segment Reporting Information [Line Items] |
Reportable Segments | Reportable SegmentsReportable segments consist of business units defined by the products and services they offer. CMS Energy and Consumers evaluate the performance of each segment based on its contribution to net income available to CMS Energy’s common stockholders. CMS Energy The segments reported for CMS Energy are: •electric utility, consisting of regulated activities associated with the generation, purchase, distribution, and sale of electricity in Michigan •gas utility, consisting of regulated activities associated with the purchase, transmission, storage, distribution, and sale of natural gas in Michigan •enterprises, consisting of various subsidiaries engaging in domestic independent power production, including the development and operation of renewable generation, and the marketing of independent power production In June 2021, CMS Energy entered into an agreement for EnerBank to merge with Regions Bank. As a result, EnerBank is not included in the composition of CMS Energy’s reportable segments. EnerBank’s results of operations are presented as income from discontinued operations on CMS Energy’s consolidated statements of income for the three and six months ended June 30, 2021 and 2020. The assets and liabilities of EnerBank are presented as held for sale on CMS Energy’s consolidated balance sheets at June 30, 2021 and December 31, 2020. For information regarding the pending merger of EnerBank, see Note 13, Exit Activities and Discontinued Operations. CMS Energy presents corporate interest and other expenses, discontinued operations, and Consumers’ other consolidated entities within other reconciling items. Beginning in 2021, CMS Land, which holds the environmental remediation obligations at Bay Harbor, will be included within other reconciling items rather than within the enterprises segment. This change was not material and was made to align segment reporting with the legal organization and internal reporting of CMS Energy. Consumers The segments reported for Consumers are: •electric utility, consisting of regulated activities associated with the generation, purchase, distribution, and sale of electricity in Michigan •gas utility, consisting of regulated activities associated with the purchase, transmission, storage, distribution, and sale of natural gas in Michigan Consumers’ other consolidated entities are presented within other reconciling items. Presented in the following tables is financial information by segment:
In Millions
| Three Months Ended |  | Six Months Ended
June 30 | 2021 | 2020 |  | 2021 | 2020 |
CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |  |
Operating revenue |  |  |  |  |  |  |  |  |  |  |
Electric utility |  | $ | 1,160 |  |  | $ | 1,022 |  |  |  | $ | 2,294 |  |  | $ | 2,050 |  |  |
Gas utility |  | 333 |  |  | 308 |  |  |  | 1,136 |  |  | 1,024 |  |  |
Enterprises |  | 65 |  |  | 52 |  |  |  | 141 |  |  | 110 |  |  |
Total operating revenue – CMS Energy |  | $ | 1,558 |  |  | $ | 1,382 |  |  |  | $ | 3,571 |  |  | $ | 3,184 |  |  |
Consumers |  |  |  |  |  |  |  |  |  |  |
Operating revenue |  |  |  |  |  |  |  |  |  |  |
Electric utility |  | $ | 1,160 |  |  | $ | 1,022 |  |  |  | $ | 2,294 |  |  | $ | 2,050 |  |  |
Gas utility |  | 333 |  |  | 308 |  |  |  | 1,136 |  |  | 1,024 |  |  |
Total operating revenue – Consumers |  | $ | 1,493 |  |  | $ | 1,330 |  |  |  | $ | 3,430 |  |  | $ | 3,074 |  |  |
CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |  |
Net income (loss) available to common stockholders |  |  |  |  |  |  |  |  |  |  |
Electric utility |  | $ | 154 |  |  | $ | 119 |  |  |  | $ | 309 |  |  | $ | 237 |  |  |
Gas utility |  | 36 |  |  | 41 |  |  |  | 217 |  |  | 158 |  |  |
Enterprises |  | 5 |  |  | 1 |  |  |  | 19 |  |  | 21 |  |  |
Other reconciling items |  | (19) |  |  | (25) |  |  |  | (20) |  |  | (37) |  |  |
Total net income available to common stockholders – CMS Energy |  | $ | 176 |  |  | $ | 136 |  |  |  | $ | 525 |  |  | $ | 379 |  |  |
Consumers |  |  |  |  |  |  |  |  |  |  |
Net income (loss) available to common stockholder |  |  |  |  |  |  |  |  |  |  |
Electric utility |  | $ | 154 |  |  | $ | 119 |  |  |  | $ | 309 |  |  | $ | 237 |  |  |
Gas utility |  | 36 |  |  | 41 |  |  |  | 217 |  |  | 158 |  |  |
Other reconciling items |  | (1) |  |  | (1) |  |  |  | (1) |  |  | (1) |  |  |
Total net income available to common stockholder – Consumers |  | $ | 189 |  |  | $ | 159 |  |  |  | $ | 525 |  |  | $ | 394 |  |  |
In Millions
| June 30, 2021 | December 31, 2020 |
CMS Energy, including Consumers |  |  |  |  |  |
Plant, property, and equipment, gross |  |  |  |  |  |
Electric utility 1 |  | $ | 17,816 |  |  | $ | 17,155 |  |  |
Gas utility 1 |  | 10,072 |  |  | 9,581 |  |  |
Enterprises |  | 1,117 |  |  | 1,113 |  |  |
Other reconciling items |  | 22 |  |  | 21 |  |  |
Total plant, property, and equipment, gross – CMS Energy |  | $ | 29,027 |  |  | $ | 27,870 |  |  |
Consumers |  |  |  |  |  |
Plant, property, and equipment, gross |  |  |  |  |  |
Electric utility 1 |  | $ | 17,816 |  |  | $ | 17,155 |  |  |
Gas utility 1 |  | 10,072 |  |  | 9,581 |  |  |
Other reconciling items |  | 22 |  |  | 21 |  |  |
Total plant, property, and equipment, gross – Consumers |  | $ | 27,910 |  |  | $ | 26,757 |  |  |
CMS Energy, including Consumers |  |  |  |  |  |
Total assets |  |  |  |  |  |
Electric utility 1 |  | $ | 16,078 |  |  | $ | 15,829 |  |  |
Gas utility 1 |  | 9,470 |  |  | 9,429 |  |  |
Enterprises |  | 1,266 |  |  | 1,276 |  |  |
Other reconciling items |  | 3,139 |  |  | 3,132 |  |  |
Total assets – CMS Energy |  | $ | 29,953 |  |  | $ | 29,666 |  |  |
Consumers |  |  |  |  |  |
Total assets |  |  |  |  |  |
Electric utility 1 |  | $ | 16,141 |  |  | $ | 15,893 |  |  |
Gas utility 1 |  | 9,518 |  |  | 9,477 |  |  |
Other reconciling items |  | 21 |  |  | 29 |  |  |
Total assets – Consumers |  | $ | 25,680 |  |  | $ | 25,399 |  |  |
1 Amounts include a portion of Consumers’ other common assets attributable to both the electric and gas utility businesses.
Consumers Energy Company |
Segment Reporting Information [Line Items] |
Reportable Segments | Reportable SegmentsReportable segments consist of business units defined by the products and services they offer. CMS Energy and Consumers evaluate the performance of each segment based on its contribution to net income available to CMS Energy’s common stockholders. CMS Energy The segments reported for CMS Energy are: •electric utility, consisting of regulated activities associated with the generation, purchase, distribution, and sale of electricity in Michigan •gas utility, consisting of regulated activities associated with the purchase, transmission, storage, distribution, and sale of natural gas in Michigan •enterprises, consisting of various subsidiaries engaging in domestic independent power production, including the development and operation of renewable generation, and the marketing of independent power production In June 2021, CMS Energy entered into an agreement for EnerBank to merge with Regions Bank. As a result, EnerBank is not included in the composition of CMS Energy’s reportable segments. EnerBank’s results of operations are presented as income from discontinued operations on CMS Energy’s consolidated statements of income for the three and six months ended June 30, 2021 and 2020. The assets and liabilities of EnerBank are presented as held for sale on CMS Energy’s consolidated balance sheets at June 30, 2021 and December 31, 2020. For information regarding the pending merger of EnerBank, see Note 13, Exit Activities and Discontinued Operations. CMS Energy presents corporate interest and other expenses, discontinued operations, and Consumers’ other consolidated entities within other reconciling items. Beginning in 2021, CMS Land, which holds the environmental remediation obligations at Bay Harbor, will be included within other reconciling items rather than within the enterprises segment. This change was not material and was made to align segment reporting with the legal organization and internal reporting of CMS Energy. Consumers The segments reported for Consumers are: •electric utility, consisting of regulated activities associated with the generation, purchase, distribution, and sale of electricity in Michigan •gas utility, consisting of regulated activities associated with the purchase, transmission, storage, distribution, and sale of natural gas in Michigan Consumers’ other consolidated entities are presented within other reconciling items. Presented in the following tables is financial information by segment:
In Millions
| Three Months Ended |  | Six Months Ended
June 30 | 2021 | 2020 |  | 2021 | 2020 |
CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |  |
Operating revenue |  |  |  |  |  |  |  |  |  |  |
Electric utility |  | $ | 1,160 |  |  | $ | 1,022 |  |  |  | $ | 2,294 |  |  | $ | 2,050 |  |  |
Gas utility |  | 333 |  |  | 308 |  |  |  | 1,136 |  |  | 1,024 |  |  |
Enterprises |  | 65 |  |  | 52 |  |  |  | 141 |  |  | 110 |  |  |
Total operating revenue – CMS Energy |  | $ | 1,558 |  |  | $ | 1,382 |  |  |  | $ | 3,571 |  |  | $ | 3,184 |  |  |
Consumers |  |  |  |  |  |  |  |  |  |  |
Operating revenue |  |  |  |  |  |  |  |  |  |  |
Electric utility |  | $ | 1,160 |  |  | $ | 1,022 |  |  |  | $ | 2,294 |  |  | $ | 2,050 |  |  |
Gas utility |  | 333 |  |  | 308 |  |  |  | 1,136 |  |  | 1,024 |  |  |
Total operating revenue – Consumers |  | $ | 1,493 |  |  | $ | 1,330 |  |  |  | $ | 3,430 |  |  | $ | 3,074 |  |  |
CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |  |
Net income (loss) available to common stockholders |  |  |  |  |  |  |  |  |  |  |
Electric utility |  | $ | 154 |  |  | $ | 119 |  |  |  | $ | 309 |  |  | $ | 237 |  |  |
Gas utility |  | 36 |  |  | 41 |  |  |  | 217 |  |  | 158 |  |  |
Enterprises |  | 5 |  |  | 1 |  |  |  | 19 |  |  | 21 |  |  |
Other reconciling items |  | (19) |  |  | (25) |  |  |  | (20) |  |  | (37) |  |  |
Total net income available to common stockholders – CMS Energy |  | $ | 176 |  |  | $ | 136 |  |  |  | $ | 525 |  |  | $ | 379 |  |  |
Consumers |  |  |  |  |  |  |  |  |  |  |
Net income (loss) available to common stockholder |  |  |  |  |  |  |  |  |  |  |
Electric utility |  | $ | 154 |  |  | $ | 119 |  |  |  | $ | 309 |  |  | $ | 237 |  |  |
Gas utility |  | 36 |  |  | 41 |  |  |  | 217 |  |  | 158 |  |  |
Other reconciling items |  | (1) |  |  | (1) |  |  |  | (1) |  |  | (1) |  |  |
Total net income available to common stockholder – Consumers |  | $ | 189 |  |  | $ | 159 |  |  |  | $ | 525 |  |  | $ | 394 |  |  |
In Millions
| June 30, 2021 | December 31, 2020 |
CMS Energy, including Consumers |  |  |  |  |  |
Plant, property, and equipment, gross |  |  |  |  |  |
Electric utility 1 |  | $ | 17,816 |  |  | $ | 17,155 |  |  |
Gas utility 1 |  | 10,072 |  |  | 9,581 |  |  |
Enterprises |  | 1,117 |  |  | 1,113 |  |  |
Other reconciling items |  | 22 |  |  | 21 |  |  |
Total plant, property, and equipment, gross – CMS Energy |  | $ | 29,027 |  |  | $ | 27,870 |  |  |
Consumers |  |  |  |  |  |
Plant, property, and equipment, gross |  |  |  |  |  |
Electric utility 1 |  | $ | 17,816 |  |  | $ | 17,155 |  |  |
Gas utility 1 |  | 10,072 |  |  | 9,581 |  |  |
Other reconciling items |  | 22 |  |  | 21 |  |  |
Total plant, property, and equipment, gross – Consumers |  | $ | 27,910 |  |  | $ | 26,757 |  |  |
CMS Energy, including Consumers |  |  |  |  |  |
Total assets |  |  |  |  |  |
Electric utility 1 |  | $ | 16,078 |  |  | $ | 15,829 |  |  |
Gas utility 1 |  | 9,470 |  |  | 9,429 |  |  |
Enterprises |  | 1,266 |  |  | 1,276 |  |  |
Other reconciling items |  | 3,139 |  |  | 3,132 |  |  |
Total assets – CMS Energy |  | $ | 29,953 |  |  | $ | 29,666 |  |  |
Consumers |  |  |  |  |  |
Total assets |  |  |  |  |  |
Electric utility 1 |  | $ | 16,141 |  |  | $ | 15,893 |  |  |
Gas utility 1 |  | 9,518 |  |  | 9,477 |  |  |
Other reconciling items |  | 21 |  |  | 29 |  |  |
Total assets – Consumers |  | $ | 25,680 |  |  | $ | 25,399 |  |  |
1 Amounts include a portion of Consumers’ other common assets attributable to both the electric and gas utility businesses.

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8924-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8981-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8721-108599 Reference 4: 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=123359005&loc=d3e9031-108599 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8844-108599 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9038-108599 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599 Reference 11: 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=123359005&loc=d3e9054-108599 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8657-108599 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8721-108599 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -URI http://asc.fasb.org/topic&trid=2134510 + Details
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