v3.26.1
Earnings Per Share—CMS Energy (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Income available to common stockholders        
Income (Loss) From Continuing Operations $ 96 $ 193 $ 373 $ 488
Less loss attributable to noncontrolling interests (24) (8) (87) (17)
Less preferred stock dividends 3 3 5 5
Income from continuing operations available to common stockholders – basic and diluted $ 117 $ 198 $ 455 $ 500
Average common shares outstanding        
Weighted average shares - basic (in shares) 310.2 298.5 308.3 298.4
Dilutive nonvested stock awards (in shares) 0.3 0.6 0.3 0.6
Dilutive contingently convertible securities (in shares) 0.3 0.0 0.3 0.0
Weighted average shares - diluted (in shares) 310.8 299.1 308.9 299.0
Income from continuing operations per average common share available to common stockholders        
Basic (in dollars per share) $ 0.38 $ 0.67 $ 1.48 $ 1.68
Diluted (in dollars per share) $ 0.37 $ 0.66 $ 1.47 $ 1.67