Revenue (Disaggregation of Revenue By Segment) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Disaggregation of Revenue [Line Items]
Revenues	$ 5,251	$ 3,715	$ 14,752	$ 10,317
Electric
Disaggregation of Revenue [Line Items]
Revenues	1,847	1,702	4,907	4,477
Electric | Residential
Disaggregation of Revenue [Line Items]
Revenues	882	885	2,273	2,262
Electric | Commercial
Disaggregation of Revenue [Line Items]
Revenues	541	533	1,505	1,452
Electric | Industrial
Disaggregation of Revenue [Line Items]
Revenues	167	167	498	473
Electric | Other
Disaggregation of Revenue [Line Items]
Revenues	257	117	631	290
Electric | Other | DTE Sustainable Generation
Disaggregation of Revenue [Line Items]
Revenues	3	2	11	9
Gas
Disaggregation of Revenue [Line Items]
Revenues	230	193	1,358	1,070
Gas | Other
Disaggregation of Revenue [Line Items]
Revenues	45	44	148	114
Gas | Gas sales
Disaggregation of Revenue [Line Items]
Revenues	128	95	955	726
Gas | End User Transportation
Disaggregation of Revenue [Line Items]
Revenues	42	38	195	171
Gas | Intermediate Transportation
Disaggregation of Revenue [Line Items]
Revenues	15	16	60	59
DTE Vantage
Disaggregation of Revenue [Line Items]
Revenues	227	372	626	1,132
Energy Trading
Disaggregation of Revenue [Line Items]
Revenues	$ 3,024	$ 1,602	$ 8,059	$ 4,208