Regulatory Matters (Details Textuals) (USD $)	1 Months Ended	3 Months Ended		6 Months Ended	12 Months Ended			1 Months Ended		1 Months Ended	12 Months Ended			6 Months Ended					1 Months Ended		12 Months Ended
	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2010	Dec. 31, 2013	Dec. 31, 2013	Jul. 29, 2013	Jul. 30, 2012	May 31, 2013 Electric [Member]	Dec. 31, 2013 Electric [Member]	May 31, 2013 Gas [Member]	Dec. 31, 2013 Gas [Member]	Dec. 31, 2013 Five Year (Minimum) [Member] Electric [Member]	Dec. 31, 2013 Seven Year (Maximum) [Member] Electric [Member]	Dec. 31, 2013 MPSC [Member] Electric [Member]	Jun. 30, 2013 MPSC [Member] Electric [Member]	Oct. 17, 2013 MPSC [Member] Electric [Member]	Aug. 29, 2013 MPSC [Member] Electric [Member]	Feb. 28, 2013 MPSC [Member] Electric [Member]	Oct. 31, 2013 MPSC [Member] Gas [Member]	Feb. 29, 2012 MPSC [Member] Gas [Member]	Dec. 31, 2013 MPSC [Member] Gas [Member]	Nov. 14, 2013 MPSC [Member] Gas [Member]	May 15, 2013 MPSC [Member] Gas [Member]	Apr. 16, 2013 MPSC [Member] Gas [Member]	Jun. 30, 2012 MPSC [Member] Gas [Member]
Regulatory Assets [Line Items]
Probability of Recovery Through Regulatory Rates for Regulatory Assets and Liabilities					$ 0
Time Period Required by Non-Bypassable Securitization Bond Surcharge to Recover Securitized Regulatory Asset					14 years
Amortization Period of Cost to Achieve Deferral					10 years
Deferral of Investigation and Remediation of Costs Associated with Gas Utilities Former MGP Sites					10 years
Amortization Period for Enterprise Business Systems					10 years
Rate increase previously authorized by the MPSC challeged by Court of Appeals affirmed by the MPSC																8,000,000
Rate increase previously authorized by the MPSC challenged by Court of Appeals reopened by the MPSC																	11,000,000
Transition PLD customers to DTE Electric distribution system												5 years	7 years
EO Reconciliation net over-recovery								26,000,000		7,000,000
Approved performance incentive charges														10,000,000							4,000,000
Approved net recovery of restoration expense tracker mechanism and line clearance tracker																		44,000,000
Approved refund of uncollectible expense true up mechanism for two plan years prior																				9,000,000
Monthly Funding Factor for all Michigan Electric utilities participating in Low Income Energy Assistance Fund						0.0099
REP Surcharge Revenue Recovery				15,000,000											100,000,000
REP Time Period														20 years
PSCR under-recovery from Three Plan Years Prior			52,600,000
Pension Equalization Mechanism Reconciliation surcharge length	1 month
PSCR under-recovery from One Plan Year Prior		87,000,000
PSCR Under-Recovery from Two Plan Years Prior		148,000,000
Fermi 2 Production Level of Full Capacity							68.00%
Maximum of challenged Fermi 2 outage charges									32,000,000
Projected Test Year Period for Gas Rate Case											12 months
MPSC Approved Increase in Annual Gas Rates											19,900,000
Approved recovery of infrastructure recovery mechanism																								77,000,000
UETM Accrual for Over-Recovery																					20,000,000
Period over which approved UETM will be refunded																			12 months
RDM Application Proposed Recovery																						$ 5,200,000			$ 9,000,000
RDM Caps for First Reconciliation Period					1.125%
RDM Cap for Second Period Reconciliation					2.25%
Composite Depreciation Rates																					2.51%		2.29%