Revenue (Disaggregation of Revenue By Segment) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Disaggregation of Revenue [Line Items]
Revenues	$ 4,924	$ 3,021	$ 9,501	$ 6,602
Electric
Disaggregation of Revenue [Line Items]
Revenues	1,570	1,411	3,060	2,775
Electric | Residential
Disaggregation of Revenue [Line Items]
Revenues	691	705	1,391	1,377
Electric | Commercial
Disaggregation of Revenue [Line Items]
Revenues	487	468	964	920
Electric | Industrial
Disaggregation of Revenue [Line Items]
Revenues	170	147	331	306
Electric | Other
Disaggregation of Revenue [Line Items]
Revenues	222	91	374	172
Electric | Other | DTE Sustainable Generation
Disaggregation of Revenue [Line Items]
Revenues	4	3	8	7
Gas
Disaggregation of Revenue [Line Items]
Revenues	362	265	1,128	877
Gas | Other
Disaggregation of Revenue [Line Items]
Revenues	60	29	103	70
Gas | Gas sales
Disaggregation of Revenue [Line Items]
Revenues	231	171	827	631
Gas | End User Transportation
Disaggregation of Revenue [Line Items]
Revenues	55	48	153	133
Gas | Intermediate Transportation
Disaggregation of Revenue [Line Items]
Revenues	16	17	45	43
DTE Vantage
Disaggregation of Revenue [Line Items]
Revenues	220	394	399	760
Energy Trading
Disaggregation of Revenue [Line Items]
Revenues	$ 2,832	$ 1,167	$ 5,035	$ 2,606