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v3.21.2

Reportable Segments (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2020
Segment Reporting Information [Line Items] |  |  |  |  |
Operating Revenue | $ 1,725 | $ 1,507 | $ 5,296 | $ 4,691 |
Net income available to common stockholders | 186 | 218 | 711 | 597 |
Plant, property, and equipment, gross | 29,450 |  | 29,450 |  | $ 27,870
Assets | 30,513 |  | 30,513 |  | 29,666
Consumers Energy Company |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Operating Revenue | 1,644 | 1,450 | 5,074 | 4,524 |
Net income available to common stockholders | 186 | 230 | 711 | 624 |
Plant, property, and equipment, gross | 28,331 |  | 28,331 |  | 26,757
Assets | 26,189 |  | 26,189 |  | 25,399
Other reconciling items |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net income available to common stockholders | (7) | (25) | (27) | (62) |
Plant, property, and equipment, gross | 22 |  | 22 |  | 21
Assets | 3,177 |  | 3,177 |  | 3,132
Other reconciling items | Consumers Energy Company |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net income available to common stockholders | 0 | 0 | (1) | (1) |
Plant, property, and equipment, gross | 22 |  | 22 |  | 21
Assets | 18 |  | 18 |  | 29
Electric Utility | Operating Segments |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Operating Revenue | 1,419 | 1,257 | 3,713 | 3,307 |
Net income available to common stockholders | 195 | 226 | 504 | 463 |
Plant, property, and equipment, gross | 17,992 |  | 17,992 |  | 17,155
Assets | 16,092 |  | 16,092 |  | 15,829
Electric Utility | Operating Segments | Consumers Energy Company |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Operating Revenue | 1,419 | 1,257 | 3,713 | 3,307 |
Net income available to common stockholders | 195 | 226 | 504 | 463 |
Plant, property, and equipment, gross | 17,992 |  | 17,992 |  | 17,155
Assets | 16,154 |  | 16,154 |  | 15,893
Gas Utility | Operating Segments |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Operating Revenue | 225 | 193 | 1,361 | 1,217 |
Net income available to common stockholders | (9) | 4 | 208 | 162 |
Plant, property, and equipment, gross | 10,317 |  | 10,317 |  | 9,581
Assets | 9,969 |  | 9,969 |  | 9,429
Gas Utility | Operating Segments | Consumers Energy Company |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Operating Revenue | 225 | 193 | 1,361 | 1,217 |
Net income available to common stockholders | (9) | 4 | 208 | 162 |
Plant, property, and equipment, gross | 10,317 |  | 10,317 |  | 9,581
Assets | 10,017 |  | 10,017 |  | 9,477
Enterprises | Operating Segments |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Operating Revenue | 81 | 57 | 222 | 167 |
Net income available to common stockholders | 7 | $ 13 | 26 | $ 34 |
Plant, property, and equipment, gross | 1,119 |  | 1,119 |  | 1,113
Assets | $ 1,275 |  | $ 1,275 |  | $ 1,276

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