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Income Taxes (Tables) | 3 Months Ended
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Mar. 31, 2014
Schedule Of Effective Income Tax Rate Reconciliation |
March 31 | 2014 |  | 2013 |  |
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 |  | 4.9 |  |  | 4.9 |  |
Accelerated flow-through of regulatory tax benefits |  | (5.4) |  |  | - |  |
Other, net |  | (0.5) |  |  | (0.2) |  |
Effective tax rate |  | 34.0 | % |  | 39.7 | % |
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 |  | 4.9 |  |  | 4.8 |  |
Accelerated flow-through of regulatory tax benefits |  | (4.8) |  |  | - |  |
Other, net |  | (0.7) |  |  | (0.9) |  |
Effective tax rate |  | 34.4 | % |  | 38.9 | % |
Consumers Energy Company [Member] |
Schedule Of Effective Income Tax Rate Reconciliation |
March 31 | 2014 |  | 2013 |  |
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 |  | 4.9 |  |  | 4.9 |  |
Accelerated flow-through of regulatory tax benefits |  | (5.4) |  |  | - |  |
Other, net |  | (0.5) |  |  | (0.2) |  |
Effective tax rate |  | 34.0 | % |  | 39.7 | % |
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 |  | 4.9 |  |  | 4.8 |  |
Accelerated flow-through of regulatory tax benefits |  | (4.8) |  |  | - |  |
Other, net |  | (0.7) |  |  | (0.9) |  |
Effective tax rate |  | 34.4 | % |  | 38.9 | % |

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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=6907707&loc=d3e32687-109319 + Details
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