Revenue (Revenues Outside the Scope of Topic 606) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Disaggregation of Revenue [Line Items]
Leases	$ 15	$ 14
Operating segments | Electric segment(a)
Disaggregation of Revenue [Line Items]
Alternative Revenue Program	1	0
Other revenues	5	4
Operating segments | Gas
Disaggregation of Revenue [Line Items]
Alternative Revenue Program	0	6
Other revenues	3	2
Operating segments | DTE Vantage segment
Disaggregation of Revenue [Line Items]
Leases	15	14
Operating segments | Energy Trading segment
Disaggregation of Revenue [Line Items]
Derivatives	$ 1,499	$ 659