Consolidated Statements of Changes in Equity (Unaudited) - 9 months ended Sep. 30, 2017 - 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)
Beginning Balance (in shares) at Dec. 31, 2016	179,432,581	179,433,000				138,632,324	138,632,000
Beginning Balance at Dec. 31, 2016	$ 9,499	$ 4,030	$ 5,114	$ (133)	$ 488
Beginning Balance at Dec. 31, 2016	9,011					$ 5,995	$ 1,386	$ 2,820	$ 1,787	$ 2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss)	832		847		(15)
Net Income	847					463			463
Dividends declared on common stock	(444)		(444)			$ (324)			(324)
Repurchase of common stock (in shares)		(524,000)
Repurchase of common stock	(51)	$ (51)
Benefit obligations, net of tax	10			10
Net change in unrealized gains on investments, net of tax	1			1
Foreign currency translation	2			2
Stock-based compensation, net contributions from noncontrolling interests, and other (in shares)		481,000
Stock-based compensation, net contributions from noncontrolling interests, and other	$ 4	$ (1)	(2)		7
Ending Balance (in shares) at Sep. 30, 2017	179,390,286	179,390,000				138,632,324	138,632,000
Ending Balance at Sep. 30, 2017	$ 9,853	$ 3,978	$ 5,515	$ (120)	$ 480
Ending Balance at Sep. 30, 2017	$ 9,373					$ 6,134	$ 1,386	$ 2,820	$ 1,926	$ 2