Consolidated Statements of Changes in Equity (Unaudited) (USD $) In Millions, except Share data, unless otherwise specified	Total	Common Stock	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Non-Controlling Interests	DTE Electric	DTE Electric Common Stock	DTE Electric Additional Paid-in Capital	DTE Electric Retained Earnings	DTE Electric Accumulated Other Comprehensive Income (Loss)
Beginning Balance at Dec. 31, 2014	$ 8,327					$ 5,196	$ 1,386	$ 2,400	$ 1,436	$ (26)
Beginning Balance at Dec. 31, 2014	8,342	3,904	4,578	(155)	15
Beginning Balance, shares at Dec. 31, 2014	176,991,231	176,991,000				138,632,324	138,632,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	274		273		1
Net Income	273					137			137
Dividends declared on common stock	(124)		(124)			(99)			(99)
Issuance of common stock, shares		105,000
Issuance of common stock	9	9
Contribution of common stock to VEBA Trust, shares		1,428,000
Contribution of common stock to VEBA Trust	117	117
Benefit obligations, net of taxes	3			3		0
Transfer of benefit obligations, net of taxes						28				28
Foreign currency translation	(3)			(3)
Stock-based compensation, distributions to noncontrolling interests and other, shares		806,000
Stock-based compensation, distributions to noncontrolling interests and other	60	63			(3)
Ending Balance at Mar. 31, 2015	8,665					5,262	1,386	2,400	1,474	2
Ending Balance at Mar. 31, 2015	$ 8,678	$ 4,093	$ 4,727	$ (155)	$ 13
Ending Balance, shares at Mar. 31, 2015	179,330,405	179,330,000				138,632,324	138,632,000