XML 86 R56.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Cash And Cash Equivalents (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2021
Cash and Cash Equivalents [Line Items] |
Schedule Of Cash And Cash Equivalents, Including Restricted Amounts | Presented in the following table are the components of total cash and cash equivalents, including restricted amounts, and their location on CMS Energy’s and Consumers’ consolidated balance sheets:
In Millions
December 31 | 2021 | 2020
CMS Energy, including Consumers |  |  |  |
Cash and cash equivalents |  | $ | 452 |  |  | $ | 32 |
Restricted cash and cash equivalents |  | 24 |  |  | 17 |
Current assets held for sale |  | — |  |  | 136 |
Cash and cash equivalents, including restricted amounts – CMS Energy |  | $ | 476 |  |  | $ | 185 |
Consumers |  |  |  |
Cash and cash equivalents |  | $ | 22 |  |  | $ | 20 |
Restricted cash and cash equivalents |  | 22 |  |  | 15 |
Cash and cash equivalents, including restricted amounts – Consumers |  | $ | 44 |  |  | $ | 35 |
Consumers Energy Company |
Cash and Cash Equivalents [Line Items] |
Schedule Of Cash And Cash Equivalents, Including Restricted Amounts | Presented in the following table are the components of total cash and cash equivalents, including restricted amounts, and their location on CMS Energy’s and Consumers’ consolidated balance sheets:
In Millions
December 31 | 2021 | 2020
CMS Energy, including Consumers |  |  |  |
Cash and cash equivalents |  | $ | 452 |  |  | $ | 32 |
Restricted cash and cash equivalents |  | 24 |  |  | 17 |
Current assets held for sale |  | — |  |  | 136 |
Cash and cash equivalents, including restricted amounts – CMS Energy |  | $ | 476 |  |  | $ | 185 |
Consumers |  |  |  |
Cash and cash equivalents |  | $ | 22 |  |  | $ | 20 |
Restricted cash and cash equivalents |  | 22 |  |  | 15 |
Cash and cash equivalents, including restricted amounts – Consumers |  | $ | 44 |  |  | $ | 35 |

X
- Definition Tabular disclosure of the components of cash and cash equivalents, including restricted amounts. + References No definition available. + Details
Name: | cms_ScheduleOfCashAndCashEquivalentsIncludingRestrictedTableTextBlock
Namespace Prefix: | cms_
Data Type: | dtr-types: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_CashAndCashEquivalentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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