Commitments and Contingencies (Details Textuals)		1 Months Ended	4 Months Ended	12 Months Ended
	May. 16, 2014 kWh	Nov. 30, 2015 USD ($) states	May. 15, 2014 $ / MWh	Dec. 31, 2015 USD ($) employee facilities dte_instances	Dec. 31, 2010 dte_instances	Dec. 31, 2014 USD ($)
Loss Contingencies [Line Items]
Number of states containing power plants | states		23
Number of NOVs received | dte_instances					2
Fine related to consent order and agreement with Allegheny County related to NOV				$ 300,000
Estimated expenditures for a supplemental environmental project to enhance particulate collection efficiency				300,000
Sulfur dioxide ambient air quality standard finalized					1 hour
Estimated future capital expenditures for next year				$ 2,700,000,000
DTE Electric
Loss Contingencies [Line Items]
Number of power plants in violation | facilities				5
Number of NOVs/FOVs currently being discussed with the EPA | dte_instances				2
Amount spent to comply with requirements				$ 2,300,000,000
Estimated capital expenditures in next fiscal year				$ 40,000,000
Number of former MGP sites | facilities				3
Accrued for remediation related to the sites				$ 8,000,000		$ 10,000,000
Number of permitted engineered coal ash storage facilities owned | facilities				3
Time period to complete studies on cooling water intake structures impacts on fish - EPA ruling (in years)		7 years
Waiting period of policy (in weeks)				84 days
Aggregate coverage amount				$ 490,000,000
Coverage period (in years)				3 years
Primary coverage				$ 1,500,000,000.0
Excess coverage for stabilization				1,250,000,000.00
Coverage maximum for property damage				2,750,000,000.00
Maximum damages for non-nuclear event				2,000,000,000
Aggregate coverage for extra expense				$ 328,000,000
Extra expense coverage period (in years)				2 years
Maximum time after the first loss from terrorism (in years)				1 year
Maximum NEIL policies against terroism loss				$ 3,200,000,000.0
Maximum assessments				45,000,000
Public liability insurance				375,000,000
Industry aggregate limit				300,000,000
Maximum deferred premium charges				127,000,000
Maximum amount per year per facility				19,000,000
Fee amount (mill per kWh) | $ / MWh			1
Reduction in fee | kWh	0
Estimated future capital expenditures for next year				$ 1,600,000,000
DTE Gas
Loss Contingencies [Line Items]
Number of former MGP sites | facilities				14
Accrued for remediation related to the sites				$ 22,000,000		$ 24,000,000
Amortization period for MGP costs (in years)				10 years
Synthetic Fuel
Loss Contingencies [Line Items]
Number of days after expiration				90 days
Potential liability				$ 850,000,000
Reduced Emissions Fuel Guarantees
Loss Contingencies [Line Items]
Number of days after expiration				90 days
Potential liability				$ 268,000,000
Guarantee Type, Other
Loss Contingencies [Line Items]
Potential liability				56,000,000
Surety Bond
Loss Contingencies [Line Items]
Performance bonds outstanding				$ 55,000,000
Represented Employees
Loss Contingencies [Line Items]
Number of represented employees | employee				4,900
Represented Employees | DTE Electric
Loss Contingencies [Line Items]
Number of represented employees | employee				2,600
Cleanup completed and site closed | DTE Gas
Loss Contingencies [Line Items]
Number of former MGP sites | facilities				5
Partial closure expected by end of fiscal year | DTE Gas
Loss Contingencies [Line Items]
Number of former MGP sites | facilities				2
Coal Combustion Residual Rule | DTE Electric
Loss Contingencies [Line Items]
Cost associated with building new facilities		$ 290,000,000