XML 103 R56.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Quarterly Financial And Common Stock Information (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2016
Schedule of Quarterly Financial Information Table |
﻿ |  |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |  |  |  |
﻿In Millions, Except Per Share Amounts and Stock Prices
﻿ | 2016
﻿Quarters Ended | March 31 | June 30 | Sept 30 | Dec 31 |
﻿CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |  |  |  |
﻿Operating revenue |  | $ | 1,801 |  | $ | 1,371 |  | $ | 1,587 |  | $ | 1,640 |
﻿Operating income |  |  | 336 |  |  | 285 |  |  | 386 |  |  | 290 |
﻿Net income |  |  | 164 |  |  | 125 |  |  | 186 |  |  | 78 |
﻿Income attributable to noncontrolling interests |  |  | - |  |  | 1 |  |  | - |  |  | 1 |
﻿Net income available to common stockholders |  |  | 164 |  |  | 124 |  |  | 186 |  |  | 77 |
﻿Basic earnings per average common share 1 |  |  | 0.59 |  |  | 0.45 |  |  | 0.67 |  |  | 0.28 |
﻿Diluted earnings per average common share 1 |  |  | 0.59 |  |  | 0.45 |  |  | 0.67 |  |  | 0.28 |
﻿Common stock prices 2 |  |  |  |  |  |  |  |  |  |  |  |  |
﻿High |  |  | 42.44 |  |  | 45.86 |  |  | 46.17 |  |  | 42.15 |
﻿Low |  |  | 35.61 |  |  | 39.38 |  |  | 41.31 |  |  | 39.49 |
﻿Consumers |  |  |  |  |  |  |  |  |  |  |  |  |
﻿Operating revenue |  | $ | 1,723 |  | $ | 1,293 |  | $ | 1,498 |  | $ | 1,550 |
﻿Operating income |  |  | 317 |  |  | 264 |  |  | 365 |  |  | 288 |
﻿Net income |  |  | 172 |  |  | 132 |  |  | 195 |  |  | 117 |
﻿Preferred stock dividends |  |  | - |  |  | 1 |  |  | - |  |  | 1 |
﻿Net income available to common stockholder |  |  | 172 |  |  | 131 |  |  | 195 |  |  | 116 |
﻿
﻿ |  |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |  |  |  |
﻿In Millions, Except Per Share Amounts and Stock Prices
﻿ | 2015
﻿Quarters Ended | March 31 | June 30 | Sept 30 | Dec 31 |
﻿CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |  |  |  |
﻿Operating revenue |  | $ | 2,111 |  | $ | 1,350 |  | $ | 1,486 |  | $ | 1,509 |
﻿Operating income |  |  | 397 |  |  | 204 |  |  | 317 |  |  | 245 |
﻿Net income |  |  | 202 |  |  | 68 |  |  | 148 |  |  | 107 |
﻿Income attributable to noncontrolling interests |  |  | - |  |  | 1 |  |  | - |  |  | 1 |
﻿Net income available to common stockholders |  |  | 202 |  |  | 67 |  |  | 148 |  |  | 106 |
﻿Basic earnings per average common share 1 |  |  | 0.73 |  |  | 0.25 |  |  | 0.53 |  |  | 0.39 |
﻿Diluted earnings per average common share 1 |  |  | 0.73 |  |  | 0.25 |  |  | 0.53 |  |  | 0.38 |
﻿Common stock prices 2 |  |  |  |  |  |  |  |  |  |  |  |  |
﻿High |  |  | 38.20 |  |  | 35.57 |  |  | 35.82 |  |  | 37.17 |
﻿Low |  |  | 32.83 |  |  | 31.39 |  |  | 32.10 |  |  | 34.24 |
﻿Consumers |  |  |  |  |  |  |  |  |  |  |  |  |
﻿Operating revenue |  | $ | 2,028 |  | $ | 1,281 |  | $ | 1,417 |  | $ | 1,439 |
﻿Operating income |  |  | 379 |  |  | 192 |  |  | 305 |  |  | 246 |
﻿Net income |  |  | 215 |  |  | 84 |  |  | 160 |  |  | 135 |
﻿Preferred stock dividends |  |  | - |  |  | 1 |  |  | - |  |  | 1 |
﻿Net income available to common stockholder |  |  | 215 |  |  | 83 |  |  | 160 |  |  | 134 |
﻿
| 1 |  | The sum of the quarters may not equal annual EPS due to changes in the number of shares outstanding.
| 2 |  | Based on New York Stock Exchange composite transactions.
Consumers Energy Company [Member] |
Schedule of Quarterly Financial Information Table |
﻿ |  |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |  |  |  |
﻿In Millions, Except Per Share Amounts and Stock Prices
﻿ | 2016
﻿Quarters Ended | March 31 | June 30 | Sept 30 | Dec 31 |
﻿CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |  |  |  |
﻿Operating revenue |  | $ | 1,801 |  | $ | 1,371 |  | $ | 1,587 |  | $ | 1,640 |
﻿Operating income |  |  | 336 |  |  | 285 |  |  | 386 |  |  | 290 |
﻿Net income |  |  | 164 |  |  | 125 |  |  | 186 |  |  | 78 |
﻿Income attributable to noncontrolling interests |  |  | - |  |  | 1 |  |  | - |  |  | 1 |
﻿Net income available to common stockholders |  |  | 164 |  |  | 124 |  |  | 186 |  |  | 77 |
﻿Basic earnings per average common share 1 |  |  | 0.59 |  |  | 0.45 |  |  | 0.67 |  |  | 0.28 |
﻿Diluted earnings per average common share 1 |  |  | 0.59 |  |  | 0.45 |  |  | 0.67 |  |  | 0.28 |
﻿Common stock prices 2 |  |  |  |  |  |  |  |  |  |  |  |  |
﻿High |  |  | 42.44 |  |  | 45.86 |  |  | 46.17 |  |  | 42.15 |
﻿Low |  |  | 35.61 |  |  | 39.38 |  |  | 41.31 |  |  | 39.49 |
﻿Consumers |  |  |  |  |  |  |  |  |  |  |  |  |
﻿Operating revenue |  | $ | 1,723 |  | $ | 1,293 |  | $ | 1,498 |  | $ | 1,550 |
﻿Operating income |  |  | 317 |  |  | 264 |  |  | 365 |  |  | 288 |
﻿Net income |  |  | 172 |  |  | 132 |  |  | 195 |  |  | 117 |
﻿Preferred stock dividends |  |  | - |  |  | 1 |  |  | - |  |  | 1 |
﻿Net income available to common stockholder |  |  | 172 |  |  | 131 |  |  | 195 |  |  | 116 |
﻿
﻿ |  |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |  |  |  |
﻿In Millions, Except Per Share Amounts and Stock Prices
﻿ | 2015
﻿Quarters Ended | March 31 | June 30 | Sept 30 | Dec 31 |
﻿CMS Energy, including Consumers |  |  |  |  |  |  |  |  |  |  |  |  |
﻿Operating revenue |  | $ | 2,111 |  | $ | 1,350 |  | $ | 1,486 |  | $ | 1,509 |
﻿Operating income |  |  | 397 |  |  | 204 |  |  | 317 |  |  | 245 |
﻿Net income |  |  | 202 |  |  | 68 |  |  | 148 |  |  | 107 |
﻿Income attributable to noncontrolling interests |  |  | - |  |  | 1 |  |  | - |  |  | 1 |
﻿Net income available to common stockholders |  |  | 202 |  |  | 67 |  |  | 148 |  |  | 106 |
﻿Basic earnings per average common share 1 |  |  | 0.73 |  |  | 0.25 |  |  | 0.53 |  |  | 0.39 |
﻿Diluted earnings per average common share 1 |  |  | 0.73 |  |  | 0.25 |  |  | 0.53 |  |  | 0.38 |
﻿Common stock prices 2 |  |  |  |  |  |  |  |  |  |  |  |  |
﻿High |  |  | 38.20 |  |  | 35.57 |  |  | 35.82 |  |  | 37.17 |
﻿Low |  |  | 32.83 |  |  | 31.39 |  |  | 32.10 |  |  | 34.24 |
﻿Consumers |  |  |  |  |  |  |  |  |  |  |  |  |
﻿Operating revenue |  | $ | 2,028 |  | $ | 1,281 |  | $ | 1,417 |  | $ | 1,439 |
﻿Operating income |  |  | 379 |  |  | 192 |  |  | 305 |  |  | 246 |
﻿Net income |  |  | 215 |  |  | 84 |  |  | 160 |  |  | 135 |
﻿Preferred stock dividends |  |  | - |  |  | 1 |  |  | - |  |  | 1 |
﻿Net income available to common stockholder |  |  | 215 |  |  | 83 |  |  | 160 |  |  | 134 |
﻿
| 1 |  | The sum of the quarters may not equal annual EPS due to changes in the number of shares outstanding.
| 2 |  | Based on New York Stock Exchange composite transactions.

X
- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=68076893&loc=d3e1280-108306 + Details
Name: | us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock
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: |