Consolidated Statements of Comprehensive Income (Unaudited) - DTE Energy Company - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Statement of Comprehensive Income [Abstract]
Net Income	$ 445	$ 313
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 $8, respectively	(3)	26
Foreign currency translation	0	(2)
Other comprehensive income (loss)	(2)	25
Comprehensive Income	$ 443	$ 338