Commitments and Contingencies (Details Textuals) (USD $)	1 Months Ended	9 Months Ended		0 Months Ended		3 Months Ended	5 Months Ended	4 Months Ended	9 Months Ended		9 Months Ended		9 Months Ended
	Apr. 30, 2014	Sep. 30, 2014	Dec. 31, 2010 dte_instances	May 19, 2014 Electric [Member]	Dec. 30, 2013 Electric [Member]	Dec. 31, 2013 Electric [Member]	Sep. 30, 2014 Electric [Member] kWh facilities dte_instances	May 15, 2014 Electric [Member] kWh	Sep. 30, 2014 Electric [Member] facilities dte_instances	Mar. 31, 2013 Electric [Member] dte_instances	Sep. 30, 2014 Gas [Member] facilities	Dec. 31, 2013 Gas [Member]	Sep. 30, 2014 Cleanup completed and site closed [Member] Gas [Member] facilities	Sep. 30, 2014 Complete closure expected by end of fiscal year [Member] Gas [Member] facilities	Sep. 30, 2014 Partial closure expected by end of fiscal year [Member] Gas [Member] facilities	Sep. 30, 2014 Synthetic Fuel [Member]	Sep. 30, 2014 Emissions [Member]	Sep. 30, 2014 Guarantee Type, Other [Member]	Sep. 30, 2014 Performance Surety Bonds [Member]	Sep. 30, 2014 Represented Employees [Member] employees
Loss Contingencies [Line Items]
Environmental Capital Expenditures Through Prior Year End									$ 2,000,000,000
Environmental Capital Expenditures in Current Year									200,000,000
Environmental Capital Expenditures In Future Years									1,200,000,000
EPA is Alleging Detroit Edison Power Plants Violated New Source Performance Standards							5		5
Number of NOVs/FOVs currently being discussed with the EPA							2		2
Sierra Club is Alleging DTE Electric Coal Fired Power Plants Violated the Clean Air Act							4		4
Exceedances of Opacity Standard							1,139		1,139	1,499
Period of excess opacity of air emissions at alleged facilities									6 minutes
Time period to complete studies on cooling water intake structures impacts on fish - EPA ruling				3 years
Number of Former MGP Sites									3		15		2	2	2
Accrual for Environmental Loss Contingencies, Gross						8,000,000	10,000,000		10,000,000		26,000,000	28,000,000
Number of Options to Regulate Coal Ash Residue							2		2
Period Gas Utility Can Amortize MGP Costs											10 years
Number of NOVs			2
Possible Environmental Capital Expenditures to Comply with Requirements		2,000,000
Estimated maximum spend to upgrade treatment technology to biological treatment to meet future requirements		13,000,000
Length of Notice of Intent to sue from the Group Against Smog and Pollution		60 days
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
EPA Sulfur Dioxide Ambient Air Quality Standard		1 hour
Waiting Period of Policy		84 days
Insurance Coverage for Extra ExpenseWhen to Necessitate Power Plant when Unavailable									490,000,000
Period of Coverage of Policy for Extra Expenses									3 years
Primary Coverage									1,500,000,000
Coverage for Stabilization Decontamination Debris Removal Repair and Replacement of Property and Decommissioning									1,250,000,000
Combined Coverage Limit for Total Property Damage									2,750,000,000
Insurance Deductible for Nuclear Power Plant							1,000,000		1,000,000
Total Limit for Property Damage for Non-Nuclear Events							2,000,000,000		2,000,000,000
Limit for Property Damage for Non-Nuclear Events Aggregate of Extra Expenses									327,000,000
Limit for Property Damage for Non-Nuclear Events Aggregate of Extra Expenses of Period									2 years
Time Period for TRIA Insurance After the First Loss from Terrorism									1 year
NEIL Policies Against Terrorism Loss									3,200,000,000
Amount per Event Loss Associated with Nuclear Power Plants									35,000,000
Maintenance of Public Liability Insurance for Nuclear Power Plants									375,000,000
Aggregate Limit of Liabilities Arises From Terrorist Act Outside Scope of Trials Subject to One Industry									300,000,000
Deferred Premium Charged Leviied Against Each Licensed Nuclear Facility									127,300,000
Limit Deferred Premium Charges Per Year									19,000,000
Company Obligated to Pay DOE Fee of Fermi 2 Electricity Generated and Sold								1
New DOE fee for nuclear waste							0
Court of Appeals proposal to congress to reduce nuclear waste fee, amount						0
Time period after which the Court of Appeals proposal to Congress for nuclear waste fee reduction will take effect duration					90 days
Guarantor Obligations, Maximum Exposure, Undiscounted																1,000,000,000	150,000,000	60,000,000
Performance Bonds Outstanding																			46,000,000
Entity Number of Employees																				4,900
Long-term Purchase Commitment, Amount		8,300,000,000
Purchase Obligation, Future Minimum Payments, Remainder of Fiscal Year		$ 2,200,000,000