Revenue (Revenues Outside the Scope of Topic 606) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation of Revenue [Line Items]
Leases	$ 12	$ 10	$ 26	$ 25
Operating segments | Electric
Disaggregation of Revenue [Line Items]
Other revenues	5	5	9	10
Operating segments | Gas
Disaggregation of Revenue [Line Items]
Other revenues	4	2	6	5
Alternative Revenue Program	2	1	8	4
Operating segments | DTE Vantage
Disaggregation of Revenue [Line Items]
Leases	12	10	26	25
Operating segments | Energy Trading
Disaggregation of Revenue [Line Items]
Derivatives	$ 586	$ 696	$ 1,245	$ 1,857