Consolidated Statements of Comprehensive Income (Unaudited) - DTE Energy Company - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net Income	$ 313	$ 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 $8, and $(1), respectively	26	(4)
Foreign currency translation	(2)	0
Other comprehensive income (loss)	25	(3)
Comprehensive Income	$ 338	$ 442