Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2016

Accounting Policies [Abstract]

Schedule of Effective Tax Rate and Unrecognized Tax Benefits

The effective tax rate and unrecognized tax benefits of the Registrants are as follows:

	Effective Tax Rate								Unrecognized Tax Benefits
	Three Months Ended June 30,				Six Months Ended June 30,				June 30,
	2016		2015		2016		2015		2016
									(In millions)
DTE Energy	26	%	20	%	26	%	28	%	$	3
DTE Electric	36	%	35	%	36	%	35	%	$	4