Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Sep. 30, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Net Income		$ 834	$ 720	$ 911
Net Income	$ 338	868	727	905
Other comprehensive income (loss), net of tax:
Benefit obligations, net of tax		11	13	(18)
Net change in unrealized gains on investments, net of tax		1	1	1
Foreign currency translation		0	(4)	(2)
Net current-period Other comprehensive income (loss)		12	10	(19)
Comprehensive income		846	730	892
Less comprehensive income (loss) attributable to noncontrolling interests		(34)	(7)	6
Comprehensive Income Attributable to DTE Energy Company		880	737	886
DTE Electric
Net Income	285	622	544	532
Other comprehensive income (loss), net of tax:
Transfer of benefit obligations, net of tax		0	27	0
Benefit obligations, net of tax		0	0	(10)
Net change in unrealized gains on investments, net of tax		0	1	0
Net current-period Other comprehensive income (loss)		0	28	(10)
Comprehensive Income Attributable to DTE Energy Company		$ 622	$ 572	$ 522