Revenue (Disaggregation of Revenue By Segment) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Disaggregation of Revenue [Line Items]
Revenues	$ 3,240	$ 3,779
Operating segments | Electric
Disaggregation of Revenue [Line Items]
Revenues	1,470	1,379
Operating segments | Electric | Residential
Disaggregation of Revenue [Line Items]
Revenues	700	654
Operating segments | Electric | Commercial
Disaggregation of Revenue [Line Items]
Revenues	556	495
Operating segments | Electric | Industrial
Disaggregation of Revenue [Line Items]
Revenues	183	169
Operating segments | Electric | Other
Disaggregation of Revenue [Line Items]
Revenues	31	61
Operating segments | Electric | Other | DTE Sustainable Generation
Disaggregation of Revenue [Line Items]
Revenues	4	4
Operating segments | Gas
Disaggregation of Revenue [Line Items]
Revenues	711	707
Operating segments | Gas | Gas sales
Disaggregation of Revenue [Line Items]
Revenues	565	601
Operating segments | Gas | End User Transportation
Disaggregation of Revenue [Line Items]
Revenues	82	86
Operating segments | Gas | Intermediate Transportation
Disaggregation of Revenue [Line Items]
Revenues	29	31
Operating segments | Gas | Other
Disaggregation of Revenue [Line Items]
Revenues	35	(11)
Operating segments | DTE Vantage
Disaggregation of Revenue [Line Items]
Revenues	184	184
Operating segments | Energy Trading
Disaggregation of Revenue [Line Items]
Revenues	$ 933	$ 1,568