XML 48 R30.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Earnings Per Share - CMS Energy (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2018
Earnings Per Share [Abstract] |
Basic And Diluted EPS Computations | Presented in the following table are CMS Energy’s basic and diluted EPS computations based on net income:
In Millions, Except Per Share Amounts |
| Three Months Ended |  | Six Months Ended
June 30 | 2018 |  | 2017 |  |  | 2018 |  | 2017 |
Income available to common stockholders |  |  |  |  |  |  |  |  |
Net income |  | $ | 140 |  |  | $ | 93 |  |  |  | $ | 381 |  |  | $ | 292 |
Less income attributable to noncontrolling interests |  | 1 |  |  | 1 |  |  |  | 1 |  |  | 1 |
Net income available to common stockholders – basic and diluted |  | $ | 139 |  |  | $ | 92 |  |  |  | $ | 380 |  |  | $ | 291 |
Average common shares outstanding |  |  |  |  |  |  |  |  |
Weighted-average shares – basic |  | 282.1 |  |  | 279.5 |  |  |  | 281.8 |  |  | 279.2 |
Add dilutive nonvested stock awards |  | 0.5 |  |  | 0.8 |  |  |  | 0.6 |  |  | 0.9 |
Weighted-average shares – diluted |  | 282.6 |  |  | 280.3 |  |  |  | 282.4 |  |  | 280.1 |
Net income per average common share available to common stockholders |  |  |  |  |  |  |  |  |
Basic |  | $ | 0.49 |  |  | $ | 0.33 |  |  |  | $ | 1.35 |  |  | $ | 1.04 |
Diluted |  | 0.49 |  |  | 0.33 |  |  |  | 1.35 |  |  | 1.04 |

X
- References No definition available. + Details
Name: | us-gaap_EarningsPerShareAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
Name: | us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration