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
Beginning Balance (in shares) at Dec. 31, 2019		192,209,000					138,632,000
Beginning Balance at Dec. 31, 2019	$ 11,836	$ 5,233	$ 6,587	$ (148)	$ 164
Beginning Balance at Dec. 31, 2019						$ 7,195	$ 1,386	$ 3,425	$ 2,384
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	342		340		2
Net Income	340					94			94
Dividends declared on common stock	(195)		(195)			(135)			(135)
Other comprehensive income, net of tax	3			3		0
Stock-based compensation, net distributions to noncontrolling interests, and other (in shares)		403,000
Stock-based compensation, net distributions to noncontrolling interests, and other	2	$ 2
Ending Balance (in shares) at Mar. 31, 2020		192,612,000					138,632,000
Ending Balance at Mar. 31, 2020	$ 11,988	$ 5,235	6,732	(145)	166
Ending Balance at Mar. 31, 2020						$ 7,154	$ 1,386	3,425	2,343
Beginning Balance (in shares) at Dec. 31, 2020	193,770,617	193,771,000				138,632,324	138,632,000
Beginning Balance at Dec. 31, 2020	$ 12,589	$ 5,406	7,156	(137)	164
Beginning Balance at Dec. 31, 2020	12,425					$ 8,070	$ 1,386	4,061	2,623
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	397		397
Net Income	397					208			208
Dividends declared on common stock	(210)		(210)			(147)			(147)
Repurchase of common stock (in shares)		(430,000)
Repurchase of common stock	(54)	$ (54)
Other comprehensive income, net of tax	3			3		$ 0
Stock-based compensation, net distributions to noncontrolling interests, and other (in shares)		386,000
Stock-based compensation, net distributions to noncontrolling interests, and other	$ (11)	$ (8)	(1)		(2)
Ending Balance (in shares) at Mar. 31, 2021	193,727,361	193,727,000				138,632,324	138,632,000
Ending Balance at Mar. 31, 2021	$ 12,714	$ 5,344	$ 7,342	$ (134)	$ 162
Ending Balance at Mar. 31, 2021	$ 12,552					$ 8,131	$ 1,386	$ 4,061	$ 2,684