Revenue (Disaggregation of Revenue by Segment) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Revenues	$ 19,228	$ 14,964	$ 11,423
Electric
Disaggregation of Revenue [Line Items]
Revenues	6,412	5,821	5,520
Electric | Residential
Disaggregation of Revenue [Line Items]
Revenues	2,911	2,926	2,825
Electric | Commercial
Disaggregation of Revenue [Line Items]
Revenues	1,958	1,908	1,739
Electric | Industrial
Disaggregation of Revenue [Line Items]
Revenues	659	628	592
Electric | Other
Disaggregation of Revenue [Line Items]
Revenues	884	359	364
Electric | Other | DTE Sustainable Generation
Disaggregation of Revenue [Line Items]
Revenues	15	12	14
Gas
Disaggregation of Revenue [Line Items]
Revenues	1,924	1,553	1,414
Gas | Other
Disaggregation of Revenue [Line Items]
Revenues	137	180	146
Gas | Gas sales
Disaggregation of Revenue [Line Items]
Revenues	1,442	1,058	971
Gas | End User Transportation
Disaggregation of Revenue [Line Items]
Revenues	264	233	218
Gas | Intermediate Transportation
Disaggregation of Revenue [Line Items]
Revenues	81	82	79
DTE Vantage
Disaggregation of Revenue [Line Items]
Revenues	848	1,482	1,224
Energy Trading
Disaggregation of Revenue [Line Items]
Revenues	$ 10,308	$ 6,831	$ 3,863