Segment and Related Information (Inter-Segment Billing) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Operating Revenues	$ (12,457)	$ (12,745)	$ (19,228)
Operating Revenues — Non-utility operations	(4,467)	(5,279)	(10,985)
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Operating Revenues	230	242	264
Operating Revenues — Non-utility operations	145	156	186
Intersegment Eliminations [Member] | Electric segment
Segment Reporting Information [Line Items]
Operating Revenues	71	72	71
Operating Revenues — Non-utility operations	3	3	6
Intersegment Eliminations [Member] | Gas segment
Segment Reporting Information [Line Items]
Operating Revenues	16	17	13
Intersegment Eliminations [Member] | DTE Vantage
Segment Reporting Information [Line Items]
Operating Revenues	43	68	78
Intersegment Eliminations [Member] | Energy Trading segment
Segment Reporting Information [Line Items]
Operating Revenues	100	85	102
Corporate and Other
Segment Reporting Information [Line Items]
Operating Revenues — Non-utility operations	$ 0	$ 0	$ 0