Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Basic Earnings per Share
Net Income Attributable to DTE Energy Company — continuing operations	$ 1,397	$ 1,083	$ 796
Less: Allocation of earnings to net restricted stock awards	3	3	2
Net income from continuing operations available to common shareholders — basic	1,394	1,080	794
Net Income Attributable to DTE Energy Company — discontinued operations	0	0	111
Net income available to common shareholders — basic	$ 1,394	$ 1,080	$ 905
Average number of common shares outstanding — basic (in shares)	206.0	195.0	193.0
Income from continuing operations (in dollars per share)	$ 6.77	$ 5.53	$ 4.11
Income (loss) from discontinued operations (in dollars per share)	0	0	0.57
Basic Earnings per Common Share (in dollars per share)	$ 6.77	$ 5.53	$ 4.68
Diluted Earnings per Share
Net Income Attributable to DTE Energy Company — continuing operations	$ 1,397	$ 1,083	$ 796
Less: Allocation of earnings to net restricted stock awards	3	3	2
Net income from continuing operations available to common shareholders — diluted	1,394	1,080	794
Net Income Attributable to DTE Energy Company — discontinued operations	0	0	111
Net income available to common shareholders — diluted	$ 1,394	$ 1,080	$ 905
Average number of common shares outstanding — basic (in shares)	206.0	195.0	193.0
Average dilutive equity units and performance share awards (in shares)	0.0	1.0	1.0
Average number of common shares outstanding — diluted (in shares)	206.0	196.0	194.0
Income from continuing operations (in dollars per share)	$ 6.76	$ 5.52	$ 4.10
Income from discontinued operations (in dollars per share)	0	0	0.57
Diluted Earnings per Common Share (in dollars per share)	$ 6.76	$ 5.52	$ 4.67
Antidilutive securities excluded from computation of earnings per share (in shares)			11.5