Commitments and Contingencies (Details Textuals) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2016 USD ($) employee facility NOV	Dec. 31, 2015 USD ($)	Sep. 07, 2016 state	Jul. 31, 2009 facility
Synthetic Fuel
Loss Contingencies [Line Items]
Number of days after expiration of statutes of limitations	90 days
Maximum potential liability	$ 620
Emissions
Loss Contingencies [Line Items]
Number of days after expiration of statutes of limitations	90 days
Maximum potential liability	$ 341
Other Guarantees
Loss Contingencies [Line Items]
Maximum potential liability	55
Performance Surety Bonds
Loss Contingencies [Line Items]
Performance bonds outstanding	$ 54
DTE Electric
Loss Contingencies [Line Items]
Number of states with NOX emissions from power plants | state			22
Number of power plants in violation | facility				5
Number of NOVs/FOVs | NOV	2
Environmental capital expenditures through prior year end		$ 2,300
Estimated environmental capital expenditures in current year	$ 45
Number of permitted engineered coal ash storage facilities owned | facility	3
Time period to comply with coal combustion residual requirements and effluent limitations guidelines	7 years
DTE Gas
Loss Contingencies [Line Items]
Number of former Mgp sites | facility	14
Accrued for remediation	$ 40	$ 22
Amortization period (in years)	10 years
Yolo Solano County Health Department in California and the District Attorney Subpoena
Loss Contingencies [Line Items]
Loss accrual	$ 3
Coal Combustion Residual Rule | DTE Electric
Loss Contingencies [Line Items]
Estimated costs associated with building new facilities	$ 315
Clean Up Completed and Site Closed | DTE Gas
Loss Contingencies [Line Items]
Number of former Mgp sites | facility	6
Partial Closure Complete | DTE Gas
Loss Contingencies [Line Items]
Number of former Mgp sites | facility	2
Labor Force Concentration Risk | Workforce Subject to Collective Bargaining Arrangements
Loss Contingencies [Line Items]
Number of employees | employee	4,800
Labor Force Concentration Risk | Workforce Subject to Collective Bargaining Arrangements | DTE Electric
Loss Contingencies [Line Items]
Number of employees | employee	2,500
Capital Expenditures and Contributions to Equity Method Investees
Loss Contingencies [Line Items]
Expected capital expenditures and contributions	$ 3,800
Capital Expenditures and Contributions to Equity Method Investees | DTE Electric
Loss Contingencies [Line Items]
Expected capital expenditures and contributions	$ 1,600