Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Net Income	$ 264	$ 157	$ 643	$ 610
Net Income	265	156	647	606
Other comprehensive income (loss), net of tax:
Benefit obligations, net of taxes	3	2	9	3
Net unrealized gains on investments during the period, net of taxes of $—, $—, $—, and $—, respectively	0	0	0	1
Foreign currency translation	(2)	(1)	(4)	(1)
Other comprehensive income	1	1	5	3
Comprehensive income	265	158	648	613
Less comprehensive income (loss) attributable to noncontrolling interests	(1)	1	(4)	4
Comprehensive income attributable to DTE Energy Company/DTE Electric	266	157	652	609
DTE Electric
Net Income	216	136	452	403
Other comprehensive income (loss), net of tax:
Transfer of benefit obligations, net of taxes of $—, $—, $18, and $—, respectively	0	0	28	0
Benefit obligations, net of taxes	0	1	0	0
Comprehensive income attributable to DTE Energy Company/DTE Electric	$ 216	$ 137	$ 480	$ 403