Consolidated Statements of Comprehensive Income (Unaudited) - DTE Energy Company - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Statement of Comprehensive Income [Abstract]
Net Income	$ 419	$ 477	$ 1,093	$ 1,112
Other comprehensive income (loss), net of tax:
Benefit obligations, net of taxes of $—.$—,$1,$1, respectively	1	1	3	3
Net unrealized gains (losses) on derivatives, net of taxes of $(2), $(4), $(4), and $8, respectively	(6)	(14)	(13)	24
Foreign currency translation	(2)	1	2	(2)
Other comprehensive income (loss)	(7)	(12)	(8)	25
Comprehensive Income Attributable to DTE Energy Company/DTE Electric Company	$ 412	$ 465	$ 1,085	$ 1,137