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Income Taxes (Tables) | 6 Months Ended
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Jun. 30, 2016
Schedule Of Effective Income Tax Rate Reconciliation |
﻿ |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |
﻿Six Months Ended June 30 | 2016 |  | 2015 |  |
﻿CMS Energy, including Consumers |  |  |  |  |  |  |
﻿U.S. federal income tax rate |  | 35.0 | % |  | 35.0 | % |
﻿Increase (decrease) in income taxes from: |  |  |  |  |  |  |
﻿State and local income taxes, net of federal effect |  | 3.8 |  |  | 4.8 |  |
﻿Accelerated flow-through of regulatory tax benefits 1 |  | (4.6) |  |  | (4.9) |  |
﻿Employee share-based awards 2 |  | (1.3) |  |  | - |  |
﻿Other, net |  | (1.5) |  |  | (1.4) |  |
﻿Effective tax rate |  | 31.4 | % |  | 33.5 | % |
﻿Consumers |  |  |  |  |  |  |
﻿U.S. federal income tax rate |  | 35.0 | % |  | 35.0 | % |
﻿Increase (decrease) in income taxes from: |  |  |  |  |  |  |
﻿State and local income taxes, net of federal effect |  | 4.6 |  |  | 4.8 |  |
﻿Accelerated flow-through of regulatory tax benefits 1 |  | (4.1) |  |  | (4.3) |  |
﻿Employee share-based awards 2 |  | (1.2) |  |  | - |  |
﻿Other, net |  | (1.1) |  |  | (1.5) |  |
﻿Effective tax rate |  | 33.2 | % |  | 34.0 | % |
﻿
| 1 |  | Since 2014, Consumers has followed a new regulatory treatment ordered by the MPSC that accelerates the return of certain income tax benefits to customers. This change, which also accelerates Consumers’ recognition of the income tax benefits, reduced Consumers’ income tax expense by $19 million for the six months ended June 30, 2016 and by $20 million for the six months ended June 30, 2015.
| 2 |  | CMS Energy and Consumers elected to adopt ASU 2016-09, Improvements to Employee Share-Based Payment Accounting, as of January 1, 2016. For further details on the implementation of this standard, see Note 1, New Accounting Standards.
Consumers Energy Company [Member] |
Schedule Of Effective Income Tax Rate Reconciliation |
﻿ |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |
﻿Six Months Ended June 30 | 2016 |  | 2015 |  |
﻿CMS Energy, including Consumers |  |  |  |  |  |  |
﻿U.S. federal income tax rate |  | 35.0 | % |  | 35.0 | % |
﻿Increase (decrease) in income taxes from: |  |  |  |  |  |  |
﻿State and local income taxes, net of federal effect |  | 3.8 |  |  | 4.8 |  |
﻿Accelerated flow-through of regulatory tax benefits 1 |  | (4.6) |  |  | (4.9) |  |
﻿Employee share-based awards 2 |  | (1.3) |  |  | - |  |
﻿Other, net |  | (1.5) |  |  | (1.4) |  |
﻿Effective tax rate |  | 31.4 | % |  | 33.5 | % |
﻿Consumers |  |  |  |  |  |  |
﻿U.S. federal income tax rate |  | 35.0 | % |  | 35.0 | % |
﻿Increase (decrease) in income taxes from: |  |  |  |  |  |  |
﻿State and local income taxes, net of federal effect |  | 4.6 |  |  | 4.8 |  |
﻿Accelerated flow-through of regulatory tax benefits 1 |  | (4.1) |  |  | (4.3) |  |
﻿Employee share-based awards 2 |  | (1.2) |  |  | - |  |
﻿Other, net |  | (1.1) |  |  | (1.5) |  |
﻿Effective tax rate |  | 33.2 | % |  | 34.0 | % |
﻿
| 1 |  | Since 2014, Consumers has followed a new regulatory treatment ordered by the MPSC that accelerates the return of certain income tax benefits to customers. This change, which also accelerates Consumers’ recognition of the income tax benefits, reduced Consumers’ income tax expense by $19 million for the six months ended June 30, 2016 and by $20 million for the six months ended June 30, 2015.
| 2 |  | CMS Energy and Consumers elected to adopt ASU 2016-09, Improvements to Employee Share-Based Payment Accounting, as of January 1, 2016. For further details on the implementation of this standard, see Note 1, New Accounting Standards.

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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32687-109319 + Details
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