Revenue (Disaggregation of Revenue by Segment) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Revenues	$ 12,457	$ 12,745	$ 19,228
Operating Segments | Electric
Disaggregation of Revenue [Line Items]
Revenues	6,293	5,818	6,412
Operating Segments | Electric | Residential
Disaggregation of Revenue [Line Items]
Revenues	3,045	2,847	2,911
Operating Segments | Electric | Commercial
Disaggregation of Revenue [Line Items]
Revenues	2,263	2,114	1,958
Operating Segments | Electric | Industrial
Disaggregation of Revenue [Line Items]
Revenues	715	732	659
Operating Segments | Electric | Other
Disaggregation of Revenue [Line Items]
Revenues	270	125	884
Operating Segments | Electric | Other | DTE Sustainable Generation
Disaggregation of Revenue [Line Items]
Revenues	16	14	15
Operating Segments | Gas
Disaggregation of Revenue [Line Items]
Revenues	1,798	1,748	1,924
Operating Segments | Gas | Gas sales
Disaggregation of Revenue [Line Items]
Revenues	1,307	1,324	1,442
Operating Segments | Gas | End User Transportation
Disaggregation of Revenue [Line Items]
Revenues	246	250	264
Operating Segments | Gas | Intermediate Transportation
Disaggregation of Revenue [Line Items]
Revenues	83	85	81
Operating Segments | Gas | Other
Disaggregation of Revenue [Line Items]
Revenues	162	89	137
Operating Segments | DTE Vantage
Disaggregation of Revenue [Line Items]
Revenues	753	809	848
Operating Segments | Energy Trading segment
Disaggregation of Revenue [Line Items]
Revenues	$ 3,843	$ 4,612	$ 10,308