Consolidated Statements of Changes in Equity - USD ($) $ in Millions	Total	Common Stock	Retained Earnings	Accumulated Other Comprehensive Loss	Non-Controlling Interest	DTE Electric	DTE Electric Common Stock	DTE Electric Retained Earnings	DTE Electric Accumulated Other Comprehensive Loss	DTE Electric Additional Paid-in Capital
Beginning Balance (in shares) at Dec. 31, 2012		172,352,000					138,632,000
Beginning Balance at Dec. 31, 2012						$ 4,303	$ 1,386	$ 1,129	$ (22)	$ 1,810
Beginning Balance at Dec. 31, 2012	$ 7,411	$ 3,587	$ 3,944	$ (158)	$ 38
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	668		661		7
Net Income	661					487		487
Dividends declared on common stock	(454)		(454)			(342)		(342)
Transfer of benefit obligations, net of taxes of $18 in 2015						0
Issuance of common stock (in shares)		589,000
Issuance of common stock	39	$ 39
Contribution of common stock to pension plan (in shares)		3,026,000
Contribution of common stock to pension plan	200	$ 200
Benefit obligations, net of tax	22			22		5			5
Net change in unrealized gains on investments, net of tax	2			2		1			1
Adjustments to Additional Paid in Capital, Contributions from Parent						400				400
Foreign currency translation	(2)			(2)
Stock-based compensation, distributions to noncontrolling interests and other (in shares)		1,120,000
Stock-based compensation, distributions to noncontrolling interests, and other	68	$ 81	(1)		(12)
Ending Balance (in shares) at Dec. 31, 2013		177,087,000					138,632,000
Ending Balance at Dec. 31, 2013						4,854	$ 1,386	1,274	(16)	2,210
Ending Balance at Dec. 31, 2013	7,954	$ 3,907	4,150	(136)	33
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	911		905		6
Net Income	905					532		532
Dividends declared on common stock	(476)		(476)			(370)		(370)
Transfer of benefit obligations, net of taxes of $18 in 2015						0
Repurchase of common stock (in shares)		713,000
Repurchase of common stock	(52)	$ (52)
Benefit obligations, net of tax	(18)			(18)		(10)			(10)
Net change in unrealized gains on investments, net of tax	1			1		0
Adjustments to Additional Paid in Capital, Contributions from Parent						$ 190				190
Foreign currency translation	(2)			(2)
Stock-based compensation, distributions to noncontrolling interests and other (in shares)		617,000
Stock-based compensation, distributions to noncontrolling interests, and other	$ 24	$ 49	(1)		(24)
Ending Balance (in shares) at Dec. 31, 2014	176,991,231	176,991,000				138,632,324	138,632,000
Ending Balance at Dec. 31, 2014	$ 8,327					$ 5,196	$ 1,386	1,436	(26)	2,400
Ending Balance at Dec. 31, 2014	8,342	$ 3,904	4,578	(155)	15
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	720		727		(7)
Net Income	727					544		544
Dividends declared on common stock	(510)		(510)			(395)		(395)
Transfer of benefit obligations, net of taxes of $18 in 2015						27			27
Issuance of common stock (in shares)		105,000
Issuance of common stock	9	$ 9
Contribution of common stock to pension plan (in shares)		1,428,000
Contribution of common stock to VEBA Trust	117	$ 117
Benefit obligations, net of tax	13			13		0
Net change in unrealized gains on investments, net of tax	1			1		1			1
Adjustments to Additional Paid in Capital, Contributions from Parent						$ 300				300
Foreign currency translation	(4)			(4)
Stock-based compensation, distributions to noncontrolling interests and other (in shares)		946,000
Stock-based compensation, distributions to noncontrolling interests, and other	$ 107	$ 93	(1)		15
Ending Balance (in shares) at Dec. 31, 2015	179,470,213	179,470,000				138,632,324	138,632,000
Ending Balance at Dec. 31, 2015	$ 8,772					$ 5,673	$ 1,386	$ 1,585	$ 2	$ 2,700
Ending Balance at Dec. 31, 2015	$ 8,795	$ 4,123	$ 4,794	$ (145)	$ 23