Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Basic Earnings per Share
Net Income Attributable to DTE Energy Company	$ 1,404	$ 1,397	$ 1,083
Less: Allocation of earnings to net restricted stock awards	3	3	3
Net income available to common shareholders — basic	$ 1,401	$ 1,394	$ 1,080
Average number of common shares outstanding — basic (in shares)	207	206	195
Basic Earnings per Common Share (in dollars per share)	$ 6.78	$ 6.77	$ 5.53
Diluted Earnings per Share
Net Income Attributable to DTE Energy Company	$ 1,404	$ 1,397	$ 1,083
Less: Allocation of earnings to net restricted stock awards	3	3	3
Net income available to common shareholders — diluted	$ 1,401	$ 1,394	$ 1,080
Average number of common shares outstanding — basic (in shares)	207	206	195
Average dilutive equity units and performance share awards (in shares)	0	0	1
Average number of common shares outstanding — diluted (in shares)	207	206	196
Diluted Earnings per Common Share (in dollars per share)	$ 6.77	$ 6.76	$ 5.52