Regulatory Matters (Details Textuals) $ in Millions												1 Months Ended			12 Months Ended
	Jan. 31, 2017 USD ($)	Jan. 17, 2017 USD ($)	Dec. 09, 2016 USD ($)	Nov. 01, 2016 USD ($)	Aug. 01, 2016 USD ($)	Feb. 23, 2016 USD ($)	Feb. 01, 2016 USD ($)	Dec. 18, 2015 USD ($)	Dec. 11, 2015 USD ($)	Jul. 01, 2015 USD ($)	Dec. 19, 2014 USD ($)	Jul. 31, 2015 USD ($)	Jul. 31, 2014 USD ($)	Mar. 31, 2013 feed_water_pump	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Jun. 30, 2015 USD ($)	Jul. 30, 2012
Regulatory Assets [Line Items]
Deferral of investigation and remediation of costs associated with gas utilities former MGP sites															10 years
Amortization period of cost to achieve deferral															10 years
Regulatory liabilities															$ 589	$ 610
Power Supply Cost Recovery
Regulatory Assets [Line Items]
Number of failed feed water pumps | feed_water_pump														1
Number of feed water pumps | feed_water_pump														2
DTE Electric
Regulatory Assets [Line Items]
Regulatory liabilities															$ 256	218
Fermi 2 production level of full capacity																		68.00%
Maximum of challenged Fermi 2 outage charges																	$ 19
DTE Electric | MPSC
Regulatory Assets [Line Items]
Damages sought													$ 22
Refund amount												$ 20
Interest calculated percent per annum												7.00%
Payment of refund												$ 25
DTE Electric | MPSC | Electric Rate Case Filing 2015
Regulatory Assets [Line Items]
Public utilities, requested rate increase (decrease)											$ 370
Public utilities, annual revenue increase										$ 230
Self-implemented base rate increase										190
Required elimination of a credit surcharge										$ 40
Public utilities, approved rate increase			$ 122			$ 243			$ 238
Return on equity			10.10%						10.30%
Authorized IRM surcharge			$ 8
DTE Electric | MPSC | Electric Rate Case Filing 2016
Regulatory Assets [Line Items]
Public utilities, requested rate increase (decrease)							$ 344
Self-implemented base rate increase					$ 245
DTE Electric | MPSC | DTE Main Electric Depreciation Case Filing 2016
Regulatory Assets [Line Items]
Requested depreciation rate increase				$ 156
DTE Electric | PSCR
Regulatory Assets [Line Items]
Estimated recovery amount												$ 16
DTE Gas | MPSC | DTE Gas Rate Case Filing 2015
Regulatory Assets [Line Items]
Public utilities, requested rate increase (decrease)				$ 103				$ 183
Public utilities, requested rate increase, IRM surcharges								$ 41
Customer360 deferred costs
Regulatory Assets [Line Items]
Approved amortization period															15 years
Subsequent Event | DTE Electric | MPSC | Electric Rate Case Filing 2016
Regulatory Assets [Line Items]
Public utilities, approved rate increase	$ 184
Return on equity	10.10%
Subsequent Event | DTE Gas | MPSC | DTE Gas Rate Case Filing 2015
Regulatory Assets [Line Items]
Public utilities, requested rate increase, IRM surcharges		$ 9
Refundable Self-Implemented Rates
Regulatory Assets [Line Items]
Regulatory liabilities															$ 27	0
Refundable Self-Implemented Rates | DTE Electric
Regulatory Assets [Line Items]
Regulatory liabilities															27	$ 0
Refundable Self-Implemented Rates | DTE Electric | MPSC | Electric Rate Case Filing 2016
Regulatory Assets [Line Items]
Regulatory liabilities															$ 27