Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2019

Accounting Policies [Abstract]

Schedule of Other Income

The following is a summary of DTE Energy's Other income:

	Three Months Ended March 31,
	2019		2018
	(In millions)
Income from REF entities	$	27	$	23
Equity earnings of equity method investees	23		21
Gains from equity securities	17		—
Contract services	8		20
Allowance for equity funds used during construction	7		7
Other	6		10
	$	88	$	81

The following is a summary of DTE Electric's Other income:

	Three Months Ended March 31,
	2019		2018
	(In millions)
Gains from equity securities allocated from DTE Energy	$	17	$	—
Contract services	8		20
Allowance for equity funds used during construction	6		5
Other	2		2
	$	33	$	27

Schedule of Effective Tax Rate

The interim effective tax rate of the Registrants are as follows:

	Effective Tax Rate
	Three Months Ended March 31,
	2019		2018
DTE Energy	12	%	16	%
DTE Electric	16	%	25	%