Commitments and Contingencies (Details Textuals) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2017 USD ($) employee facility NOV	Dec. 31, 2016 USD ($) facilities	Sep. 07, 2016 state	Jul. 31, 2009 facility
Loss Contingencies [Line Items]
Unrecorded unconditional purchase obligation	$ 3,000
Synthetic fuel
Loss Contingencies [Line Items]
Number of days after expiration of statutes of limitations	90 days
Maximum potential liability	$ 620
Reduced emissions fuel guarantees
Loss Contingencies [Line Items]
Number of days after expiration of statutes of limitations	90 days
Maximum potential liability	$ 308
Other guarantees
Loss Contingencies [Line Items]
Maximum potential liability	55
Performance surety bonds
Loss Contingencies [Line Items]
Performance bonds outstanding	$ 56
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		$ 2,400
Number of former Mgp sites | facilities		3
Accrued for remediation	$ 8	$ 8
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
Unrecorded unconditional purchase obligation	$ 1,500
DTE Gas
Loss Contingencies [Line Items]
Number of former Mgp sites | facility	14
Accrued for remediation	$ 41	$ 43
Amortization period (in years)	10 years
DTE Gas | NEXUS pipeline
Loss Contingencies [Line Items]
Maximum potential liability	$ 53
Lease agreement term	15 years
Percentage of payment obligations due	50.00%
Texas Eastern Transmission, LP | NEXUS pipeline
Loss Contingencies [Line Items]
Maximum potential liability	$ 8
Lease agreement term	15 years
Percentage of payment obligations due	50.00%
Yolo Solano County Health Department in California and the District Attorney Subpoena
Loss Contingencies [Line Items]
Loss accrual	$ 4
Coal combustion residual rule | DTE Electric
Loss Contingencies [Line Items]
Estimated costs associated with building new facilities	$ 309
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	4
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	2,600