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Contingencies And Commitments (Tables) | 12 Months Ended
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Dec. 31, 2018
Site Contingency [Line Items] |
Guarantees | Presented in the following table are CMS Energy’s and Consumers’ guarantees at December 31, 2018:
In Millions |
Guarantee Description | Issue Date | Expiration Date | Maximum Obligation |  | Carrying Amount |
CMS Energy, including Consumers |  |  |  |  |  |
Indemnity obligations from stock and asset sale agreements 1 | various | indefinite |  | $ | 153 |  |  | $ | 3 |
Guarantees 2 | various | indefinite |  | 39 |  |  | — |
Consumers |  |  |  |  |  |
Guarantee 2 | July 2011 | indefinite |  | $ | 30 |  |  | $ | — |
1 | These obligations arose from stock and asset sale agreements under which CMS Energy or a subsidiary of CMS Energy indemnified the purchaser for losses resulting from various matters, primarily claims related to taxes. CMS Energy believes the likelihood of material loss to be remote for the indemnity obligations not recorded as liabilities.
2 | At Consumers, this obligation comprises a guarantee provided to the U.S. Department of Energy in connection with a settlement agreement regarding damages resulting from the department’s failure to accept spent nuclear fuel from nuclear power plants formerly owned by Consumers. At CMS Energy, the guarantee obligations comprise Consumers’ guarantee to the U.S. Department of Energy and CMS Energy’s 1994 guarantee of non‑recourse revenue bonds issued by Genesee. For additional details on this guarantee, see Note 21, Variable Interest Entities.
Purchase Obligations | Presented in the following table are CMS Energy’s and Consumers’ contractual purchase obligations at December 31, 2018 for each of the periods shown:
In Millions |
| Payments Due
| Total |  | 2019 |  | 2020 |  | 2021 |  | 2022 |  | 2023 |  | Beyond 2023 |
CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |  |  |
Total PPAs |  | $ | 9,930 |  |  | $ | 1,049 |  |  | $ | 1,051 |  |  | $ | 1,043 |  |  | $ | 744 |  |  | $ | 638 |  |  | $ | 5,405 |
Other |  | 2,341 |  |  | 1,276 |  |  | 405 |  |  | 163 |  |  | 137 |  |  | 117 |  |  | 243 |
Consumers |  |  |  |  |  |  |  |  |  |  |  |  |  |
PPAs |  |  |  |  |  |  |  |  |  |  |  |  |  |
MCV PPA |  | $ | 3,880 |  |  | $ | 330 |  |  | $ | 318 |  |  | $ | 289 |  |  | $ | 275 |  |  | $ | 279 |  |  | $ | 2,389 |
Palisades PPA |  | 1,280 |  |  | 378 |  |  | 388 |  |  | 400 |  |  | 114 |  |  | — |  |  | — |
Related-party PPAs |  | 692 |  |  | 85 |  |  | 85 |  |  | 86 |  |  | 86 |  |  | 87 |  |  | 263 |
Other PPAs |  | 4,078 |  |  | 256 |  |  | 260 |  |  | 268 |  |  | 269 |  |  | 272 |  |  | 2,753 |
Total PPAs |  | $ | 9,930 |  |  | $ | 1,049 |  |  | $ | 1,051 |  |  | $ | 1,043 |  |  | $ | 744 |  |  | $ | 638 |  |  | $ | 5,405 |
Other |  | 2,075 |  |  | 1,237 |  |  | 373 |  |  | 148 |  |  | 124 |  |  | 103 |  |  | 90 |
Consumers Energy Company |
Site Contingency [Line Items] |
Guarantees | Presented in the following table are CMS Energy’s and Consumers’ guarantees at December 31, 2018:
In Millions |
Guarantee Description | Issue Date | Expiration Date | Maximum Obligation |  | Carrying Amount |
CMS Energy, including Consumers |  |  |  |  |  |
Indemnity obligations from stock and asset sale agreements 1 | various | indefinite |  | $ | 153 |  |  | $ | 3 |
Guarantees 2 | various | indefinite |  | 39 |  |  | — |
Consumers |  |  |  |  |  |
Guarantee 2 | July 2011 | indefinite |  | $ | 30 |  |  | $ | — |
1 | These obligations arose from stock and asset sale agreements under which CMS Energy or a subsidiary of CMS Energy indemnified the purchaser for losses resulting from various matters, primarily claims related to taxes. CMS Energy believes the likelihood of material loss to be remote for the indemnity obligations not recorded as liabilities.
2 | At Consumers, this obligation comprises a guarantee provided to the U.S. Department of Energy in connection with a settlement agreement regarding damages resulting from the department’s failure to accept spent nuclear fuel from nuclear power plants formerly owned by Consumers. At CMS Energy, the guarantee obligations comprise Consumers’ guarantee to the U.S. Department of Energy and CMS Energy’s 1994 guarantee of non‑recourse revenue bonds issued by Genesee. For additional details on this guarantee, see Note 21, Variable Interest Entities.
Purchase Obligations | Presented in the following table are CMS Energy’s and Consumers’ contractual purchase obligations at December 31, 2018 for each of the periods shown:
In Millions |
| Payments Due
| Total |  | 2019 |  | 2020 |  | 2021 |  | 2022 |  | 2023 |  | Beyond 2023 |
CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |  |  |
Total PPAs |  | $ | 9,930 |  |  | $ | 1,049 |  |  | $ | 1,051 |  |  | $ | 1,043 |  |  | $ | 744 |  |  | $ | 638 |  |  | $ | 5,405 |
Other |  | 2,341 |  |  | 1,276 |  |  | 405 |  |  | 163 |  |  | 137 |  |  | 117 |  |  | 243 |
Consumers |  |  |  |  |  |  |  |  |  |  |  |  |  |
PPAs |  |  |  |  |  |  |  |  |  |  |  |  |  |
MCV PPA |  | $ | 3,880 |  |  | $ | 330 |  |  | $ | 318 |  |  | $ | 289 |  |  | $ | 275 |  |  | $ | 279 |  |  | $ | 2,389 |
Palisades PPA |  | 1,280 |  |  | 378 |  |  | 388 |  |  | 400 |  |  | 114 |  |  | — |  |  | — |
Related-party PPAs |  | 692 |  |  | 85 |  |  | 85 |  |  | 86 |  |  | 86 |  |  | 87 |  |  | 263 |
Other PPAs |  | 4,078 |  |  | 256 |  |  | 260 |  |  | 268 |  |  | 269 |  |  | 272 |  |  | 2,753 |
Total PPAs |  | $ | 9,930 |  |  | $ | 1,049 |  |  | $ | 1,051 |  |  | $ | 1,043 |  |  | $ | 744 |  |  | $ | 638 |  |  | $ | 5,405 |
Other |  | 2,075 |  |  | 1,237 |  |  | 373 |  |  | 148 |  |  | 124 |  |  | 103 |  |  | 90 |
Manufactured Gas Plant | Consumers Energy Company |
Site Contingency [Line Items] |
Expected Remediation Costs By Year | Consumers expects to pay the following amounts for remediation and other response activity costs in each of the next five years:
In Millions |
| 2019 |  | 2020 |  | 2021 |  | 2022 |  | 2023 |
Consumers |  |  |  |  |  |  |  |  |  |
Remediation and other response activity costs |  | $ | 12 |  |  | $ | 16 |  |  | $ | 21 |  |  | $ | 7 |  |  | $ | 2 |
Bay Harbor |
Site Contingency [Line Items] |
Expected Remediation Costs By Year | The undiscounted amount of the remaining obligation is $58 million. CMS Energy expects to pay the following amounts for long-term liquid disposal and operating and maintenance costs in each of the next five years:
In Millions |
| 2019 |  | 2020 |  | 2021 |  | 2022 |  | 2023 |
CMS Energy |  |  |  |  |  |  |  |  |  |
Long-term liquid disposal and operating and maintenance costs |  | $ | 4 |  |  | $ | 4 |  |  | $ | 4 |  |  | $ | 4 |  |  | $ | 4 |

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