XML 44 R28.htm IDEA: XBRL DOCUMENT
v3.21.1

Notes Receivable (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Schedule Of Current And Non-Current Notes Receivable | Presented in the following table are details of CMS Energy’s and Consumers’ notes receivable:
In Millions
| March 31, 2021 | December 31, 2020
CMS Energy, including Consumers |  |  |  |
Current |  |  |  |
EnerBank notes receivable, net of allowance for loan losses |  | $ | 284 |  |  | $ | 275 |
Non‑current |  |  |  |
EnerBank notes receivable, net of allowance for loan losses |  | 2,426 |  |  | 2,612 |
Total notes receivable |  | $ | 2,710 |  |  | $ | 2,887 |
Consumers |  |  |  |
Current |  |  |  |
DB SERP note receivable – related party |  | $ | 7 |  |  | $ | 7 |
Non‑current |  |  |  |
DB SERP note receivable – related party |  | 99 |  |  | 100 |
Total notes receivable |  | $ | 106 |  |  | $ | 107 |
Schedule Of Allowance For Loan Losses | Presented in the following table are the changes in the allowance for loan losses:
In Millions
Three Months Ended March 31 |  |  |  | 2021 | 2020
Balance at beginning of period |  |  |  |  |  |  | $ | 123 |  |  | $ | 33 |
Effects of new accounting standard 1 |  |  |  |  |  |  | — |  |  | 62 |
Provision for loan losses |  |  |  |  |  |  | 5 |  |  | 13 |
Charge-offs |  |  |  |  |  |  | (12) |  |  | (11) |
Recoveries |  |  |  |  |  |  | 2 |  |  | 2 |
Balance at end of period |  |  |  |  |  |  | $ | 118 |  |  | $ | 99 |
1 On January 1, 2020, the allowance for loan losses was adjusted as part of the adoption of ASU 2016-13, Measurement of Credit Losses on Financial Instruments.
Consumers Energy Company |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Schedule Of Current And Non-Current Notes Receivable | Presented in the following table are details of CMS Energy’s and Consumers’ notes receivable:
In Millions
| March 31, 2021 | December 31, 2020
CMS Energy, including Consumers |  |  |  |
Current |  |  |  |
EnerBank notes receivable, net of allowance for loan losses |  | $ | 284 |  |  | $ | 275 |
Non‑current |  |  |  |
EnerBank notes receivable, net of allowance for loan losses |  | 2,426 |  |  | 2,612 |
Total notes receivable |  | $ | 2,710 |  |  | $ | 2,887 |
Consumers |  |  |  |
Current |  |  |  |
DB SERP note receivable – related party |  | $ | 7 |  |  | $ | 7 |
Non‑current |  |  |  |
DB SERP note receivable – related party |  | 99 |  |  | 100 |
Total notes receivable |  | $ | 106 |  |  | $ | 107 |

X
- Definition Tabular disclosure of current and non-current notes receivable. + References No definition available. + Details
Name: | cms_ScheduleOfCurrentAndNonCurrentNotesReceivableTableTextBlockTableTextBlock
Namespace Prefix: | cms_
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_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of allowance for credit loss on financing receivable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447 + Details
Name: | us-gaap_AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock
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: |