Earnings Per Share - CMS Energy (Tables)

3 Months Ended

Mar. 31, 2014

Earnings Per Share - CMS Energy [Abstract]

Basic And Diluted EPS Computations

In Millions, Except Per Share Amounts
Three Months Ended March 31	2014			2013
Income available to common stockholders
Income from continuing operations available to    common stockholders – basic and diluted		$	204		$	144
Average common shares outstanding
Weighted-average shares – basic			266.1			263.6
Add dilutive contingently convertible securities			6.3			6.1
Add dilutive non-vested stock awards			0.6			1.2
Weighted-average shares – diluted			273.0			270.9
Income from continuing operations per average
common share available to common stockholders
Basic		$	0.77		$	0.55
Diluted			0.75			0.53