XML 88 R36.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Contingencies And Commitments (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2019
Site Contingency [Line Items] |
Guarantees | Presented in the following table are CMS Energy’s and Consumers’ guarantees at December 31, 2019:
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 |  |  | $ | 2 |
Guarantees 2 | various | indefinite |  | 36 |  |  | — |
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. The maximum obligation amount is mostly related to the Equatorial Guinea tax claim discussed in the CMS Energy Contingencies section of this Note. 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, 2019 for each of the periods shown:
In Millions |
| Payments Due
| Total |  | 2020 |  | 2021 |  | 2022 |  | 2023 |  | 2024 |  | Beyond 2024 |
CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |  |  |
Total PPAs |  | $ | 9,336 |  |  | $ | 1,030 |  |  | $ | 1,035 |  |  | $ | 750 |  |  | $ | 608 |  |  | $ | 605 |  |  | $ | 5,308 |
Other |  | 3,244 |  |  | 1,685 |  |  | 520 |  |  | 451 |  |  | 210 |  |  | 199 |  |  | 179 |
Consumers |  |  |  |  |  |  |  |  |  |  |  |  |  |
PPAs |  |  |  |  |  |  |  |  |  |  |  |  |  |
MCV PPA |  | $ | 3,295 |  |  | $ | 313 |  |  | $ | 287 |  |  | $ | 272 |  |  | $ | 225 |  |  | $ | 201 |  |  | $ | 1,997 |
Palisades PPA |  | 899 |  |  | 388 |  |  | 398 |  |  | 113 |  |  | — |  |  | — |  |  | — |
Related-party PPAs |  | 472 |  |  | 71 |  |  | 72 |  |  | 74 |  |  | 74 |  |  | 75 |  |  | 106 |
Other PPAs |  | 4,670 |  |  | 258 |  |  | 278 |  |  | 291 |  |  | 309 |  |  | 329 |  |  | 3,205 |
Total PPAs |  | $ | 9,336 |  |  | $ | 1,030 |  |  | $ | 1,035 |  |  | $ | 750 |  |  | $ | 608 |  |  | $ | 605 |  |  | $ | 5,308 |
Other |  | 2,865 |  |  | 1,638 |  |  | 477 |  |  | 413 |  |  | 174 |  |  | 162 |  |  | 1 |
Consumers Energy Company |
Site Contingency [Line Items] |
Guarantees | Presented in the following table are CMS Energy’s and Consumers’ guarantees at December 31, 2019:
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 |  |  | $ | 2 |
Guarantees 2 | various | indefinite |  | 36 |  |  | — |
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. The maximum obligation amount is mostly related to the Equatorial Guinea tax claim discussed in the CMS Energy Contingencies section of this Note. 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, 2019 for each of the periods shown:
In Millions |
| Payments Due
| Total |  | 2020 |  | 2021 |  | 2022 |  | 2023 |  | 2024 |  | Beyond 2024 |
CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |  |  |
Total PPAs |  | $ | 9,336 |  |  | $ | 1,030 |  |  | $ | 1,035 |  |  | $ | 750 |  |  | $ | 608 |  |  | $ | 605 |  |  | $ | 5,308 |
Other |  | 3,244 |  |  | 1,685 |  |  | 520 |  |  | 451 |  |  | 210 |  |  | 199 |  |  | 179 |
Consumers |  |  |  |  |  |  |  |  |  |  |  |  |  |
PPAs |  |  |  |  |  |  |  |  |  |  |  |  |  |
MCV PPA |  | $ | 3,295 |  |  | $ | 313 |  |  | $ | 287 |  |  | $ | 272 |  |  | $ | 225 |  |  | $ | 201 |  |  | $ | 1,997 |
Palisades PPA |  | 899 |  |  | 388 |  |  | 398 |  |  | 113 |  |  | — |  |  | — |  |  | — |
Related-party PPAs |  | 472 |  |  | 71 |  |  | 72 |  |  | 74 |  |  | 74 |  |  | 75 |  |  | 106 |
Other PPAs |  | 4,670 |  |  | 258 |  |  | 278 |  |  | 291 |  |  | 309 |  |  | 329 |  |  | 3,205 |
Total PPAs |  | $ | 9,336 |  |  | $ | 1,030 |  |  | $ | 1,035 |  |  | $ | 750 |  |  | $ | 608 |  |  | $ | 605 |  |  | $ | 5,308 |
Other |  | 2,865 |  |  | 1,638 |  |  | 477 |  |  | 413 |  |  | 174 |  |  | 162 |  |  | 1 |
Manufactured Gas Plant | Consumers Energy Company |
Site Contingency [Line Items] |
Expected Remediation Costs By Year |
In Millions |
| 2020 |  | 2021 |  | 2022 |  | 2023 |  | 2024 |
Consumers |  |  |  |  |  |  |  |  |  |
Remediation and other response activity costs |  | $ | 12 |  |  | $ | 8 |  |  | $ | 20 |  |  | $ | 11 |  |  | $ | 2 |
Bay Harbor |
Site Contingency [Line Items] |
Expected Remediation Costs By Year | . CMS Energy expects to pay the following amounts for long-term leachate disposal and operating and maintenance costs in each of the next five years:
In Millions |
| 2020 |  | 2021 |  | 2022 |  | 2023 |  | 2024 |
CMS Energy |  |  |  |  |  |  |  |  |  |
Long-term leachate disposal and operating and maintenance costs |  | $ | 5 |  |  | $ | 4 |  |  | $ | 4 |  |  | $ | 4 |  |  | $ | 4 |

X
- Definition Expected Remediation Costs By Year [Table Text Block] + References No definition available. + Details
Name: | cms_ExpectedRemediationCostsByYearTableTextBlock
Namespace Prefix: | cms_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of each guarantee obligation, or each group of similar guarantee obligations, including (a) the nature of the guarantee, including its term, how it arose, and the events or circumstances that would require the guarantor to perform under the guarantee; (b) the maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee; (c) the current carrying amount of the liability, if any, for the guarantor's obligations under the guarantee; and (d) the nature of any recourse provisions under the guarantee, and any assets held either as collateral or by third parties, and any relevant related party disclosure. Excludes disclosures about product warranties. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=118943654&loc=d3e12069-110248 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=118943654&loc=d3e12265-110248 + Details
Name: | us-gaap_ScheduleOfGuaranteeObligationsTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_SiteContingencyLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of unconditional purchase obligations that are not recognized as a liability on the balance sheet, including the nature and significant terms of an unconditional purchase obligation; the amount of the fixed and determinable portion of the obligation as of the date of the latest balance sheet presented in the aggregate and, if determinable, for each of the five succeeding fiscal years; the nature of any variable components of the obligation; the amount purchased under the obligation (for example, the take-or-pay or throughput contract) for the reporting period; and may include the amount of imputed interest necessary to reduce the obligation to present value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 440 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=77896938&loc=d3e25336-109308 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 440 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=77896938&loc=d3e25287-109308 + Details
Name: | us-gaap_UnrecordedUnconditionalPurchaseObligationsDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=cms_ConsumersEnergyCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EnvironmentalRemediationSiteAxis=cms_ManufacturedGasPlantMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EnvironmentalRemediationSiteAxis=cms_BayHarborMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |