Segment and Related Information (Inter-Segment Billing) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Operating Revenues	$ (12,745)	$ (19,228)	$ (14,964)
Operating Revenues — Non-utility operations	(5,279)	(10,985)	(7,676)
Reclassifications and Eliminations
Segment Reporting Information [Line Items]
Operating Revenues	242	264	711
Operating Revenues — Non-utility operations	156	186
Reclassifications and Eliminations | Electric
Segment Reporting Information [Line Items]
Operating Revenues	72	71	64
Operating Revenues — Non-utility operations	3	6	4
Reclassifications and Eliminations | Gas
Segment Reporting Information [Line Items]
Operating Revenues	17	13	14
Reclassifications and Eliminations | DTE Vantage
Segment Reporting Information [Line Items]
Operating Revenues	68	78	575
Reclassifications and Eliminations | Energy Trading
Segment Reporting Information [Line Items]
Operating Revenues	85	102	56
Reclassifications and Eliminations | Corporate and Other
Segment Reporting Information [Line Items]
Operating Revenues	$ 0	$ 0	$ 2