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Financial and Other Derivative Instruments (Details Textuals) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Derivatives, Fair Value [Line Items]    
Derivative Assets $ 1,922 $ 1,391
Letters of credit that could be used to offset net derivative liabilities 81 18
Letters of credit that could be used to offset net derivative assets 82 37
Additional collateral, aggregate fair value 571  
Derivative net liability position aggregate fair value 1,800  
Collateral already posted fair value 150  
Derivative, net asset position, fair value 1,400  
Remaining amount of offsets to derivative net liability positions for hard and soft trigger provisions 247  
Derivatives not designated as hedging instruments    
Derivatives, Fair Value [Line Items]    
Derivative Assets 1,921 1,391
FTRs | Derivatives not designated as hedging instruments | DTE Electric | Other current assets    
Derivatives, Fair Value [Line Items]    
Derivative Assets $ 11 $ 9