Consolidated Statements of Changes In Equity (Unaudited) - USD ($)
$ in Millions
Total
Common Stock
Other Paid-in Capital
Accumulated Other Comprehensive Loss
Retirement benefits liability
Derivative instruments
Retained Earnings (Accumulated Deficit)
Noncontrolling Interests
Consumers Energy Company
Consumers Energy Company
Common Stock
Consumers Energy Company
Other Paid-in Capital
Consumers Energy Company
Accumulated Other Comprehensive Loss
Consumers Energy Company
Retirement benefits liability
Consumers Energy Company
Retained Earnings (Accumulated Deficit)
Consumers Energy Company
Preferred Stock
Total Equity at Beginning of Period at Dec. 31, 2018 $ 4,792 $ 3 $ 5,088 $ (65) $ (63) $ (2) $ (271) $ 37 $ 6,920 $ 841 $ 4,699 $ (21) $ (21) $ 1,364 $ 37
Increase (Decrease) in Stockholders' Equity [Roll Forward]                              
Common stock issued     7                        
Common stock repurchased     (8)                        
Stockholder contribution                     350        
Amortization of net actuarial loss 1       1       0            
Amortization of prior service credit (1)       (1)                    
Unrealized loss on derivative instruments (1)         (1)                  
Net income 213           213   226         226  
Dividends declared on common stock             (108)             (172)  
Total Equity at End of Period at Mar. 31, 2019 $ 4,895 3 5,087 (66) (63) (3) (166) 37 7,324 841 5,049 (21) (21) 1,418 37
Increase (Decrease) in Stockholders' Equity [Roll Forward]                              
Dividends declared per common share (in dollars per share) $ 0.3825                            
Total Equity at Beginning of Period at Dec. 31, 2019 $ 5,055 3 5,113 (73) (69) (4) (25) 37 7,737 841 5,374 (28) (28) 1,513 37
Increase (Decrease) in Stockholders' Equity [Roll Forward]                              
Common stock issued     106                        
Common stock repurchased     (12)                        
Stockholder contribution                     350        
Amortization of net actuarial loss 1       1       0            
Amortization of prior service credit 0       0                    
Unrealized loss on derivative instruments (4)         (4)                  
Net income 243           243   235         235  
Dividends declared on common stock             (116)             (219)  
Total Equity at End of Period at Mar. 31, 2020 $ 5,222 $ 3 $ 5,207 $ (76) $ (68) $ (8) $ 51 $ 37 $ 8,103 $ 841 $ 5,724 $ (28) $ (28) $ 1,529 $ 37
Increase (Decrease) in Stockholders' Equity [Roll Forward]                              
Dividends declared per common share (in dollars per share) $ 0.4075