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Regulatory Matters (Integrated Resource Plan) (Details) - USD ($)
$ in Millions
1 Months Ended
Jul. 26, 2023
Nov. 30, 2022
Dec. 31, 2023
Sep. 30, 2023
Dec. 31, 2022
Public Utilities, General Disclosures [Line Items]          
Reclassification to long-term regulatory assets     $ 6,209   $ 3,886
Reclassification from property, plant, and equipment     (28,169)   (28,767)
DTE Electric          
Public Utilities, General Disclosures [Line Items]          
Reclassification to long-term regulatory assets     5,596   3,219
Reclassification from property, plant, and equipment     $ (21,366)   $ (22,496)
Integrated Resource Plan | MPSC | DTE Electric          
Public Utilities, General Disclosures [Line Items]          
Period over which to meet the needs of customers   20 years      
Authorized securitization of plant costs $ 1,050        
Committed total donations 38        
Integrated Resource Plan | MPSC | DTE Electric | Organizations providing energy support to low-income customers          
Public Utilities, General Disclosures [Line Items]          
Committed annual donations 2        
Integrated Resource Plan | MPSC | DTE Electric | Organizations providing customers with bill assistance          
Public Utilities, General Disclosures [Line Items]          
Committed total donations 30        
Integrated Resource Plan | MPSC | DTE Electric | Organizations providing customers with bill assistance | Minimum          
Public Utilities, General Disclosures [Line Items]          
Committed annual donations 1        
Integrated Resource Plan | MPSC | DTE Electric | Belle River coal handling assets          
Public Utilities, General Disclosures [Line Items]          
Authorized securitization of plant costs 200        
Integrated Resource Plan | MPSC | DTE Electric | Monroe assets          
Public Utilities, General Disclosures [Line Items]          
Authorized securitization of plant costs 845        
Integrated Resource Plan | MPSC | DTE Electric | Monroe assets | Recoverable undepreciated costs on retiring plants          
Public Utilities, General Disclosures [Line Items]          
Requested regulatory asset $ 1,600        
Requested return on equity, percent 9.00%        
Amortization period for regulatory asset 15 years        
Integrated Resource Plan | MPSC | DTE Electric | Adjustment          
Public Utilities, General Disclosures [Line Items]          
Reclassification to long-term regulatory assets       $ 2,700  
Reclassification from property, plant, and equipment       $ 2,700