Consolidated Statements of Comprehensive Income (Unaudited) - DTE Energy Company - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Statement of Comprehensive Income [Abstract]
Net Income	$ 247	$ 445
Other comprehensive income (loss), net of tax:
Benefit obligations, net of taxes of $— for both periods	1	1
Net unrealized gains (losses) on derivatives, net of taxes of $1 and $(1), respectively	3	(3)
Foreign currency translation	(1)	0
Other comprehensive income (loss)	3	(2)
Comprehensive Income Attributable to DTE Energy Company/DTE Electric Company	$ 250	$ 443