Consolidated Statements of Comprehensive Income (Unaudited) - DTE Energy Company - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Statement of Comprehensive Income [Abstract]
Net Income	$ 470	$ 419	$ 999	$ 1,093
Other comprehensive income (loss), net of tax:
Benefit obligations, net of taxes of $— , $—, $1, and $1, respectively	2	1	4	3
Net unrealized gains (losses) on derivatives, net of taxes of $7, $(2), $9 and $(4), respectively	21	(6)	28	(13)
Foreign currency translation	(1)	(2)	(3)	2
Other comprehensive income (loss)	22	(7)	29	(8)
Comprehensive Income Attributable to DTE Energy Company/DTE Electric Company	$ 492	$ 412	$ 1,028	$ 1,085