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CMS Energy Corporation Consolidated Statements of Changes in Equity - USD ($)
shares in Thousands, $ in Millions
Total
Common Stock
Other Paid-in Capital
Accumulated Other Comprehensive Loss
Retirement benefits liability
Derivative instruments
Retained Earnings
Cumulative Redeemable Perpetual Preferred Stock, Series C
Noncontrolling Interests
Beginning of period (in shares) at Dec. 31, 2021   289,758              
Total Equity at Beginning of Period at Dec. 31, 2021 $ 7,188 $ 3 $ 5,406 $ (59) $ (56) $ (3) $ 1,057 $ 224 $ 557
Increase (Decrease) in Stockholders' Equity [Roll Forward]                  
Common stock issued (in shares)   1,704              
Common stock issued     93            
Common stock repurchased (in shares)   (151)              
Common stock repurchased     (9)            
Common stock reacquired (in shares)   (43)              
Common stock reacquired     0            
Net gain arising during the period 1       1        
Prior service credit adjustment 0       0        
Amortization of net actuarial loss 4       4        
Amortization of prior service credit (1)       (1)        
Unrealized gain on investments 2         2      
Reclassification adjustments included in net income 1         1      
Net income (loss) 813           837   (24)
Dividends declared on common stock             (534)    
Dividends declared on preferred stock             (10)    
Sale of membership interest in VIE to tax equity investor                 49
Contributions from noncontrolling interests                 2
Distributions to noncontrolling interests                 (4)
End of period (in shares) at Dec. 31, 2022   291,268              
Total Equity at End of Period at Dec. 31, 2022 $ 7,595 $ 3 5,490 (52) (52) 0 1,350 224 580
Increase (Decrease) in Stockholders' Equity [Roll Forward]                  
Dividends declared per common share (in dollars per share) $ 1.8400                
Dividends declared per preferred stock Series C depositary share (in dollars per share) $ 1.0500                
Common stock issued (in shares)   3,355              
Common stock issued     222            
Common stock repurchased (in shares)   (119)              
Common stock repurchased     (7)            
Common stock reacquired (in shares)   (64)              
Common stock reacquired     0            
Net gain arising during the period $ 5       5        
Prior service credit adjustment 0       0        
Amortization of net actuarial loss 2       2        
Amortization of prior service credit (1)       (1)        
Unrealized gain on investments 0         0      
Reclassification adjustments included in net income 0         0      
Net income (loss) $ 808           887   (79)
Dividends declared on common stock             (569)    
Dividends declared on preferred stock             (10)    
Sale of membership interest in VIE to tax equity investor                 86
Contributions from noncontrolling interests                 6
Distributions to noncontrolling interests                 (12)
End of period (in shares) at Dec. 31, 2023 294,400 294,440              
Total Equity at End of Period at Dec. 31, 2023 $ 8,125 $ 3 5,705 (46) (46) 0 1,658 224 581
Increase (Decrease) in Stockholders' Equity [Roll Forward]                  
Dividends declared per common share (in dollars per share) $ 1.9500                
Dividends declared per preferred stock Series C depositary share (in dollars per share) $ 1.0500                
Common stock issued (in shares)   4,673              
Common stock issued     315            
Common stock repurchased (in shares)   (181)              
Common stock repurchased     (11)            
Common stock reacquired (in shares)   (142)              
Common stock reacquired     0            
Net gain arising during the period $ 2       2        
Prior service credit adjustment 1       1        
Amortization of net actuarial loss 2       2        
Amortization of prior service credit 0       0        
Unrealized gain on investments 0         0      
Reclassification adjustments included in net income 0         0      
Net income (loss) $ 947           1,003   (56)
Dividends declared on common stock             (616)    
Dividends declared on preferred stock             (10)    
Sale of membership interest in VIE to tax equity investor                 0
Contributions from noncontrolling interests                 5
Distributions to noncontrolling interests                 (12)
End of period (in shares) at Dec. 31, 2024 298,800 298,790              
Total Equity at End of Period at Dec. 31, 2024 $ 8,748 $ 3 $ 6,009 $ (41) $ (41) $ 0 $ 2,035 $ 224 $ 518
Increase (Decrease) in Stockholders' Equity [Roll Forward]                  
Dividends declared per common share (in dollars per share) $ 2.0600                
Dividends declared per preferred stock Series C depositary share (in dollars per share) $ 1.0500