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Financial Instruments (Tables) | 6 Months Ended
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Jun. 30, 2021
Financial Instruments [Line Items] |
Schedule Of Carrying Amounts And Fair Values Of Financial Instruments | For information about assets and liabilities recorded at fair value and for additional details regarding the fair value hierarchy, see Note 4, Fair Value Measurements.
In Millions
| June 30, 2021 |  | December 31, 2020
| Carrying Amount | Fair Value |  | Carrying Amount | Fair Value
| Total | Level |  | Total | Level
| 1 | 2 | 3 |  | 1 | 2 | 3
CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term receivables 1 |  | $ | 15 |  |  | $ | 15 |  |  | $ | — |  |  | $ | — |  |  | $ | 15 |  |  |  | $ | 17 |  |  | $ | 17 |  |  | $ | — |  |  | $ | — |  |  | $ | 17 |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt 2 |  | 12,300 |  |  | 13,923 |  |  | 1,220 |  |  | 10,706 |  |  | 1,997 |  |  |  | 12,315 |  |  | 14,601 |  |  | 1,249 |  |  | 11,267 |  |  | 2,085 |
Long-term payables 3 |  | 30 |  |  | 32 |  |  | — |  |  | — |  |  | 32 |  |  |  | 33 |  |  | 35 |  |  | — |  |  | — |  |  | 35 |
Consumers |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term receivables 1 |  | $ | 15 |  |  | $ | 15 |  |  | $ | — |  |  | $ | — |  |  | $ | 15 |  |  |  | $ | 17 |  |  | $ | 17 |  |  | $ | — |  |  | $ | — |  |  | $ | 17 |
Notes receivable – related party 4 |  | 105 |  |  | 105 |  |  | — |  |  | — |  |  | 105 |  |  |  | 107 |  |  | 107 |  |  | — |  |  | — |  |  | 107 |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt 5 |  | 8,094 |  |  | 9,234 |  |  | — |  |  | 7,237 |  |  | 1,997 |  |  |  | 8,106 |  |  | 9,801 |  |  | — |  |  | 7,716 |  |  | 2,085 |
1 Includes current portion of long-term accounts receivable of $10 million at June 30, 2021 and $12 million at December 31, 2020. 2 Includes current portion of long-term debt of $572 million at June 30, 2021 and $571 million at December 31, 2020. 3 Includes current portion of long-term payables of $22 million at June 30, 2021 and $6 million at December 31, 2020. 4 Includes current portion of notes receivable – related party of $7 million at June 30, 2021 and December 31, 2020. 5 Includes current portion of long-term debt of $364 million at June 30, 2021 and December 31, 2020.
Consumers Energy Company |
Financial Instruments [Line Items] |
Schedule Of Carrying Amounts And Fair Values Of Financial Instruments | For information about assets and liabilities recorded at fair value and for additional details regarding the fair value hierarchy, see Note 4, Fair Value Measurements.
In Millions
| June 30, 2021 |  | December 31, 2020
| Carrying Amount | Fair Value |  | Carrying Amount | Fair Value
| Total | Level |  | Total | Level
| 1 | 2 | 3 |  | 1 | 2 | 3
CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term receivables 1 |  | $ | 15 |  |  | $ | 15 |  |  | $ | — |  |  | $ | — |  |  | $ | 15 |  |  |  | $ | 17 |  |  | $ | 17 |  |  | $ | — |  |  | $ | — |  |  | $ | 17 |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt 2 |  | 12,300 |  |  | 13,923 |  |  | 1,220 |  |  | 10,706 |  |  | 1,997 |  |  |  | 12,315 |  |  | 14,601 |  |  | 1,249 |  |  | 11,267 |  |  | 2,085 |
Long-term payables 3 |  | 30 |  |  | 32 |  |  | — |  |  | — |  |  | 32 |  |  |  | 33 |  |  | 35 |  |  | — |  |  | — |  |  | 35 |
Consumers |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term receivables 1 |  | $ | 15 |  |  | $ | 15 |  |  | $ | — |  |  | $ | — |  |  | $ | 15 |  |  |  | $ | 17 |  |  | $ | 17 |  |  | $ | — |  |  | $ | — |  |  | $ | 17 |
Notes receivable – related party 4 |  | 105 |  |  | 105 |  |  | — |  |  | — |  |  | 105 |  |  |  | 107 |  |  | 107 |  |  | — |  |  | — |  |  | 107 |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt 5 |  | 8,094 |  |  | 9,234 |  |  | — |  |  | 7,237 |  |  | 1,997 |  |  |  | 8,106 |  |  | 9,801 |  |  | — |  |  | 7,716 |  |  | 2,085 |
1 Includes current portion of long-term accounts receivable of $10 million at June 30, 2021 and $12 million at December 31, 2020. 2 Includes current portion of long-term debt of $572 million at June 30, 2021 and $571 million at December 31, 2020. 3 Includes current portion of long-term payables of $22 million at June 30, 2021 and $6 million at December 31, 2020. 4 Includes current portion of notes receivable – related party of $7 million at June 30, 2021 and December 31, 2020. 5 Includes current portion of long-term debt of $364 million at June 30, 2021 and December 31, 2020.

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- Definition Financial Instruments [Line Items] + References No definition available. + Details
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- Definition Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=123594938&loc=d3e13467-108611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
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