Consolidated Statements of Comprehensive Income - DTE Energy Company - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Statement of Comprehensive Income [Abstract]
Net Income	$ 1,462	$ 1,404	$ 1,397
Other comprehensive income (loss), net of tax:
Benefit obligations, net of taxes of $(2), $—, and $2, respectively	(5)	1	6
Net unrealized gains (losses) on derivatives, net of taxes of $(4), $15, and $(4), respectively	(11)	47	(13)
Foreign currency translation	3	(7)	2
Other comprehensive income (loss)	(13)	41	(5)
Comprehensive Income (Loss) Attributable to DTE Energy Company/DTE Electric Company	$ 1,449	$ 1,445	$ 1,392