Segment and Related Information (Financial Data - Operating Revenues including Inter-segment Revenues) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting, Revenue Reconciling Item [Line Items]
Operating Revenues — Utility operations	$ 2,053	$ 1,875	$ 6,196	$ 5,483
Operating Revenues — Non-utility operations	3,198	1,840	8,556	4,834
Operating Revenues	5,251	3,715	14,752	10,317
Reconciliation and Eliminations
Segment Reporting, Revenue Reconciling Item [Line Items]
Operating Revenues — Non-utility operations	(77)	(155)	(198)	(572)
Operating Revenues	(77)	(155)	(198)	(558)
Electric
Segment Reporting, Revenue Reconciling Item [Line Items]
Operating Revenues	1,847	1,702	4,907	4,477
Electric | Operating segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Operating Revenues — Utility operations	1,844	1,700	4,896	4,468
Operating Revenues — Non-utility operations	3	2	11	9
Electric | Reconciliation and Eliminations
Segment Reporting, Revenue Reconciling Item [Line Items]
Operating Revenues	(19)	(17)	(53)	(48)
Gas
Segment Reporting, Revenue Reconciling Item [Line Items]
Operating Revenues	230	193	1,358	1,070
Gas | Operating segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Operating Revenues — Utility operations	230	193	1,358	1,070
Gas | Reconciliation and Eliminations
Segment Reporting, Revenue Reconciling Item [Line Items]
Operating Revenues	(4)	(3)	(10)	(10)
DTE Vantage
Segment Reporting, Revenue Reconciling Item [Line Items]
Operating Revenues	227	372	626	1,132
DTE Vantage | Operating segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Operating Revenues — Non-utility operations	227	372	626	1,132
DTE Vantage | Reconciliation and Eliminations
Segment Reporting, Revenue Reconciling Item [Line Items]
Operating Revenues	(15)	(125)	(57)	(463)
Energy Trading
Segment Reporting, Revenue Reconciling Item [Line Items]
Operating Revenues	3,024	1,602	8,059	4,208
Energy Trading | Operating segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Operating Revenues — Non-utility operations	3,024	1,602	8,059	4,208
Energy Trading | Reconciliation and Eliminations
Segment Reporting, Revenue Reconciling Item [Line Items]
Operating Revenues	(39)	(9)	(78)	(35)
Corporate and Other | Operating segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Operating Revenues — Non-utility operations	0	1	0	2
Corporate and Other | Reconciliation and Eliminations
Segment Reporting, Revenue Reconciling Item [Line Items]
Operating Revenues	$ 0	$ (1)	$ 0	(2)
Gas Storage and Pipelines | Reconciliation and Eliminations
Segment Reporting, Revenue Reconciling Item [Line Items]
Operating Revenues — Non-utility operations				$ 14