Consolidated Statements of Changes in Equity (Unaudited) - USD ($) $ in Millions	Total	Common Stock	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interests	DTE Electric	DTE Electric Common Stock	DTE Electric Additional Paid-in Capital	DTE Electric Retained Earnings	DTE Electric Accumulated Other Comprehensive Income (Loss)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Implementation of ASU 2016-01	$ 0		$ 5	$ (5)		$ 0			$ 3	$ (3)
Beginning Balance (in shares) at Dec. 31, 2017	179,386,967	179,387,000				138,632,324	138,632,000
Beginning Balance at Dec. 31, 2017	$ 9,990	$ 3,989	5,643	(120)	$ 478
Beginning Balance at Dec. 31, 2017	9,512					$ 6,265	$ 1,386	$ 2,920	1,956	3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss)	587		595		(8)
Net Income	595					303			303
Dividends declared on common stock	(481)		(481)			$ (230)			(230)
Issuance of common stock (in shares)		160,000
Issuance of common stock	16	$ 16
Contribution of common stock to pension plan (in shares)		1,751,000
Contribution of common stock to pension plan	175	$ 175
Benefit obligations, net of tax	5			5
Foreign currency translation	(1)			(1)
Stock-based compensation, net contributions from noncontrolling interests, and other (in shares)		475,000
Stock-based compensation, net contributions from noncontrolling interests, and other	$ 27	$ 25	(2)		4
Ending Balance (in shares) at Jun. 30, 2018	181,772,574	181,773,000				138,632,324	138,632,000
Ending Balance at Jun. 30, 2018	$ 10,318	$ 4,205	$ 5,760	$ (121)	$ 474
Ending Balance at Jun. 30, 2018	$ 9,844					$ 6,338	$ 1,386	$ 2,920	$ 2,032	$ 0