Consolidated Statements of Comprehensive Income (Unaudited) - DTE Energy Company - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Net Income	$ 201	$ 37	$ 646	$ 431
Other comprehensive income, net of tax:
Benefit obligations, net of taxes of $1, $1, $1 and $2, respectively	0	2	1	5
Net unrealized gains on derivatives, net of taxes of $2, $1, $1, and $1, respectively	6	3	2	3
Foreign currency translation	2	0	2	0
Other comprehensive income	8	5	5	8
Comprehensive Income	$ 209	$ 42	$ 651	$ 439