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Financial Instruments (Tables) | 3 Months Ended
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Mar. 31, 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
| March 31, 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 |  | $ | 16 |  |  | $ | 16 |  |  | $ | — |  |  | $ | — |  |  | $ | 16 |  |  |  | $ | 17 |  |  | $ | 17 |  |  | $ | — |  |  | $ | — |  |  | $ | 17 |
Notes receivable 2 |  | 2,710 |  |  | 3,006 |  |  | — |  |  | — |  |  | 3,006 |  |  |  | 2,887 |  |  | 3,248 |  |  | — |  |  | — |  |  | 3,248 |
Securities held to maturity 3 |  | 34 |  |  | 34 |  |  | — |  |  | 34 |  |  | — |  |  |  | 28 |  |  | 29 |  |  | — |  |  | 29 |  |  | — |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt 4 |  | 15,046 |  |  | 16,233 |  |  | 1,206 |  |  | 13,108 |  |  | 1,919 |  |  |  | 15,120 |  |  | 17,512 |  |  | 1,249 |  |  | 14,178 |  |  | 2,085 |
Long-term payables 5 |  | 33 |  |  | 35 |  |  | — |  |  | — |  |  | 35 |  |  |  | 33 |  |  | 35 |  |  | — |  |  | — |  |  | 35 |
Consumers |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term receivables 1 |  | $ | 16 |  |  | $ | 16 |  |  | $ | — |  |  | $ | — |  |  | $ | 16 |  |  |  | $ | 17 |  |  | $ | 17 |  |  | $ | — |  |  | $ | — |  |  | $ | 17 |
Notes receivable – related party 6 |  | 106 |  |  | 106 |  |  | — |  |  | — |  |  | 106 |  |  |  | 107 |  |  | 107 |  |  | — |  |  | — |  |  | 107 |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt 7 |  | 8,107 |  |  | 8,815 |  |  | — |  |  | 6,896 |  |  | 1,919 |  |  |  | 8,106 |  |  | 9,801 |  |  | — |  |  | 7,716 |  |  | 2,085 |
1 Includes current portion of long-term accounts receivable of $11 million at March 31, 2021 and $12 million at December 31, 2020. 2 Includes current portion of notes receivable of $284 million at March 31, 2021 and $275 million at December 31, 2020. For further details, see Note 6, Notes Receivable. 3 These investment securities consist primarily of mortgage-backed securities and Utah Housing Corporation bonds held by EnerBank. There were no unrealized gains during the three months ended March 31, 2021 and $1 million of unrealized gains during the year ended December 31, 2020. 4 Includes current portion of long-term debt of $1.5 billion at March 31, 2021 and December 31, 2020. 5 Includes current portion of long-term payables of $6 million at March 31, 2021 and December 31, 2020. 6 Includes current portion of notes receivable – related party of $7 million at March 31, 2021 and December 31, 2020. For further details on this note receivable, see Note 6, Notes Receivable. 7 Includes current portion of long-term debt of $364 million at March 31, 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
| March 31, 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 |  | $ | 16 |  |  | $ | 16 |  |  | $ | — |  |  | $ | — |  |  | $ | 16 |  |  |  | $ | 17 |  |  | $ | 17 |  |  | $ | — |  |  | $ | — |  |  | $ | 17 |
Notes receivable 2 |  | 2,710 |  |  | 3,006 |  |  | — |  |  | — |  |  | 3,006 |  |  |  | 2,887 |  |  | 3,248 |  |  | — |  |  | — |  |  | 3,248 |
Securities held to maturity 3 |  | 34 |  |  | 34 |  |  | — |  |  | 34 |  |  | — |  |  |  | 28 |  |  | 29 |  |  | — |  |  | 29 |  |  | — |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt 4 |  | 15,046 |  |  | 16,233 |  |  | 1,206 |  |  | 13,108 |  |  | 1,919 |  |  |  | 15,120 |  |  | 17,512 |  |  | 1,249 |  |  | 14,178 |  |  | 2,085 |
Long-term payables 5 |  | 33 |  |  | 35 |  |  | — |  |  | — |  |  | 35 |  |  |  | 33 |  |  | 35 |  |  | — |  |  | — |  |  | 35 |
Consumers |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term receivables 1 |  | $ | 16 |  |  | $ | 16 |  |  | $ | — |  |  | $ | — |  |  | $ | 16 |  |  |  | $ | 17 |  |  | $ | 17 |  |  | $ | — |  |  | $ | — |  |  | $ | 17 |
Notes receivable – related party 6 |  | 106 |  |  | 106 |  |  | — |  |  | — |  |  | 106 |  |  |  | 107 |  |  | 107 |  |  | — |  |  | — |  |  | 107 |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt 7 |  | 8,107 |  |  | 8,815 |  |  | — |  |  | 6,896 |  |  | 1,919 |  |  |  | 8,106 |  |  | 9,801 |  |  | — |  |  | 7,716 |  |  | 2,085 |
1 Includes current portion of long-term accounts receivable of $11 million at March 31, 2021 and $12 million at December 31, 2020. 2 Includes current portion of notes receivable of $284 million at March 31, 2021 and $275 million at December 31, 2020. For further details, see Note 6, Notes Receivable. 3 These investment securities consist primarily of mortgage-backed securities and Utah Housing Corporation bonds held by EnerBank. There were no unrealized gains during the three months ended March 31, 2021 and $1 million of unrealized gains during the year ended December 31, 2020. 4 Includes current portion of long-term debt of $1.5 billion at March 31, 2021 and December 31, 2020. 5 Includes current portion of long-term payables of $6 million at March 31, 2021 and December 31, 2020. 6 Includes current portion of notes receivable – related party of $7 million at March 31, 2021 and December 31, 2020. For further details on this note receivable, see Note 6, Notes Receivable. 7 Includes current portion of long-term debt of $364 million at March 31, 2021 and December 31, 2020.

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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=121572278&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=117815213&loc=d3e19207-110258 + Details
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