Consolidated Statements of Comprehensive Income (Unaudited) - DTE Energy Company - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Net Income	$ 477	$ 332	$ 1,112	$ 978
Other comprehensive income (loss), net of tax:
Benefit obligations, net of taxes of $—, $—, $1, and $1, respectively	1	1	3	2
Net unrealized gains (losses) on derivatives, net of taxes of $(4), $4, $8, and $5, respectively	(14)	15	24	17
Foreign currency translation	1	(3)	(2)	(1)
Other comprehensive income (loss)	(12)	13	25	18
Comprehensive Income	$ 465	$ 345	$ 1,137	$ 996