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Commitments and Contingencies (Details)
12 Months Ended
Dec. 31, 2017
USD ($)
employee
facility
NOV
site
Dec. 31, 2010
Dec. 31, 2016
USD ($)
Sep. 07, 2016
state
Jul. 31, 2009
plant
Loss Contingencies [Line Items]          
Sulfur dioxide ambient air quality standard finalized   1 hour      
Estimated Future Capital Expenditures For Next Year $ 3,600,000,000        
Labor force concentration risk | Workforce subject to collective bargaining arrangements          
Loss Contingencies [Line Items]          
Approximate number of employees | employee 5,000        
Synthetic fuel          
Loss Contingencies [Line Items]          
Number of days after expiration of statutes of limitations 90 days        
Maximum potential liability $ 620,000,000        
Reduced emissions fuel guarantees          
Loss Contingencies [Line Items]          
Number of days after expiration of statutes of limitations 90 days        
Maximum potential liability $ 386,000,000        
NEXUS Pipeline          
Loss Contingencies [Line Items]          
Guarantee termination, minimum threshold, period following end of primary term of capacity lease agreements 2 months        
Other guarantees          
Loss Contingencies [Line Items]          
Maximum potential liability $ 55,000,000        
Performance surety bonds          
Loss Contingencies [Line Items]          
Performance bonds outstanding $ 58,000,000        
DTE Electric          
Loss Contingencies [Line Items]          
Number of states with NOX emissions from power plants | state       22  
Number of power plants allegedly in violation | plant         5
Number of NOVs/FOVs currently being discussed with the EPA | NOV 2        
Amount spent to comply with air pollution requirements $ 2,400,000,000        
Estimated capital expenditures $ 0        
Number of former MGP sites | site 3        
Accrued for remediation related to the sites $ 6,000,000   $ 8,000,000    
Number of permitted engineered coal ash storage facilities owned | facility 3        
Time period to comply with coal combustion residual requirements and effluent limitations guidelines 6 years        
Estimated Future Capital Expenditures For Next Year $ 1,900,000,000        
DTE Electric | Labor force concentration risk | Workforce subject to collective bargaining arrangements          
Loss Contingencies [Line Items]          
Approximate number of employees | employee 2,700        
DTE Electric | Coal combustion residual rule          
Loss Contingencies [Line Items]          
Estimated cost associated with building new facilities $ 295,000,000        
DTE Gas          
Loss Contingencies [Line Items]          
Number of former MGP sites | site 14        
Accrued for remediation related to the sites $ 41,000,000   $ 43,000,000    
Amortization period for MGP costs (in years) 10 years        
DTE Gas | NEXUS Pipeline          
Loss Contingencies [Line Items]          
Maximum potential liability $ 80,000,000        
Capacity lease agreement term 15 years        
Percentage of all payment obligations due and payable 50.00%        
DTE Gas | Cleanup completed and site closed          
Loss Contingencies [Line Items]          
Number of former MGP sites | site 6        
DTE Gas | Partial closure completed          
Loss Contingencies [Line Items]          
Number of former MGP sites | site 6        
Texas Eastern Transmission, LP | NEXUS Pipeline          
Loss Contingencies [Line Items]          
Maximum potential liability $ 10,000,000        
Capacity lease agreement term 15 years        
Percentage of all payment obligations due and payable 50.00%