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Retirement Benefits and Trusteed Assets (Details Textuals) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Annual contributions per employee, percentage   4.00%    
Defined contribution plan cost   $ 70 $ 73 $ 65
DTE Electric        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Defined contribution plan cost   $ 34 34 31
DTE Gas        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Annual contributions per employee, percentage   8.00%    
Pension plan        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Company contributions   $ 12 102  
Expected return on plan assets for next fiscal year   6.80%    
Pension plan | Qualified Plan        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Company contributions   $ 0 92 150
Pension plan | DTE Electric        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Allocated pension benefit costs   107 106 93
Pension plan | DTE Electric | Qualified Plan        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Company contributions   0 $ 60 $ 100
Pension plan | Maximum | Qualified Plan        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Estimated future employer contributions in next fiscal year   $ 7    
Pension plan | Maximum | DTE Electric | Qualified Plan | Forecast        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Pension funds transferred to (from) plan $ 50      
Pension plan | Maximum | DTE Gas | Qualified Plan | Forecast        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Pension funds transferred to (from) plan $ (50)      
Other postretirement benefit plan        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Expected return on plan assets for next fiscal year   6.40%    
Retiree health care allowance will increase at lower of the rate of medical inflation or a set percentage   2.00%