XML 52 R32.htm IDEA: XBRL DOCUMENT
v3.23.2

Fair Value Measurements (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
Assets And Liabilities Measured At Fair Value On A Recurring Basis | Presented in the following table are CMS Energy’s and Consumers’ assets and liabilities recorded at fair value on a recurring basis:
In Millions
| CMS Energy, including Consumers |  | Consumers
| June 30 2023 | December 31 2022 |  | June 30 2023 | December 31 2022
Assets 1 |  |  |  |  |  |  |  |  |
Cash equivalents |  | $ | 188 |  |  | $ | — |  |  |  | $ | 42 |  |  | $ | — |
Restricted cash equivalents |  | 17 |  |  | 18 |  |  |  | 17 |  |  | 17 |
Nonqualified deferred compensation plan assets |  | 28 |  |  | 24 |  |  |  | 20 |  |  | 18 |
Derivative instruments |  | 5 |  |  | 2 |  |  |  | 4 |  |  | 2 |
Total assets |  | $ | 238 |  |  | $ | 44 |  |  |  | $ | 83 |  |  | $ | 37 |
Liabilities 1 |  |  |  |  |  |  |  |  |
Nonqualified deferred compensation plan liabilities |  | $ | 28 |  |  | $ | 24 |  |  |  | $ | 20 |  |  | $ | 18 |
Total liabilities |  | $ | 28 |  |  | $ | 24 |  |  |  | $ | 20 |  |  | $ | 18 |
1 All assets and liabilities were classified as Level 1 with the exception of derivative contracts, which were classified as Level 3.
Consumers Energy Company |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
Assets And Liabilities Measured At Fair Value On A Recurring Basis | Presented in the following table are CMS Energy’s and Consumers’ assets and liabilities recorded at fair value on a recurring basis:
In Millions
| CMS Energy, including Consumers |  | Consumers
| June 30 2023 | December 31 2022 |  | June 30 2023 | December 31 2022
Assets 1 |  |  |  |  |  |  |  |  |
Cash equivalents |  | $ | 188 |  |  | $ | — |  |  |  | $ | 42 |  |  | $ | — |
Restricted cash equivalents |  | 17 |  |  | 18 |  |  |  | 17 |  |  | 17 |
Nonqualified deferred compensation plan assets |  | 28 |  |  | 24 |  |  |  | 20 |  |  | 18 |
Derivative instruments |  | 5 |  |  | 2 |  |  |  | 4 |  |  | 2 |
Total assets |  | $ | 238 |  |  | $ | 44 |  |  |  | $ | 83 |  |  | $ | 37 |
Liabilities 1 |  |  |  |  |  |  |  |  |
Nonqualified deferred compensation plan liabilities |  | $ | 28 |  |  | $ | 24 |  |  |  | $ | 20 |  |  | $ | 18 |
Total liabilities |  | $ | 28 |  |  | $ | 24 |  |  |  | $ | 20 |  |  | $ | 18 |
1 All assets and liabilities were classified as Level 1 with the exception of derivative contracts, which were classified as Level 3.

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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-3 + Details
Name: | us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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