Revenue (Revenues Outside the Scope of Topic 606) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Disaggregation of Revenue [Line Items]
Leases	$ 19	$ 24	$ 44	$ 63
Operating segments | Electric
Disaggregation of Revenue [Line Items]
Other revenues	8	7	18	15
Operating segments | Gas
Disaggregation of Revenue [Line Items]
Other revenues	2	2	7	6
Alternative Revenue Program	0	0	4	0
Operating segments | DTE Vantage
Disaggregation of Revenue [Line Items]
Leases	19	24	44	63
Operating segments | Energy Trading
Disaggregation of Revenue [Line Items]
Derivatives	$ 670	$ 2,531	$ 2,527	$ 6,691