Earnings Per Share - CMS Energy (Tables)

12 Months Ended

Dec. 31, 2017

Earnings Per Share - CMS Energy [Abstract]

Basic And Diluted EPS Computations

In Millions, Except Per Share Amounts
Years Ended December 31	2017			2016			2015
Income available to common stockholders
Net income		$	462		$	553		$	525
Less income attributable to noncontrolling interests			2			2			2
Net income available to common stockholders – basic and diluted		$	460		$	551		$	523
Average common shares outstanding
Weighted-average shares – basic			280.0			277.9			275.6
Add dilutive nonvested stock awards			0.8			1.0			0.9
Weighted-average shares – diluted			280.8			278.9			276.5
Net income per average common share available to common stockholders
Basic		$	1.64		$	1.99		$	1.90
Diluted			1.64			1.98			1.89
Dividends declared per common share		$	1.33		$	1.24		$	1.16