Property, Plant, and Equipment (Summary of Property by Classification) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	$ 40,840	$ 37,274
Accumulated depreciation and amortization	(9,947)	(9,105)
Net property, plant, and equipment	30,893	28,169
DTE Vantage
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	1,135	1,075
Accumulated depreciation and amortization	(520)	(479)
Other
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	272	234
Accumulated depreciation and amortization	(78)	(66)
DTE Electric
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	30,801	27,936
Accumulated depreciation and amortization	(7,404)	(6,570)
Net property, plant, and equipment	23,397	21,366
DTE Electric | Distribution
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	14,995	13,673
Accumulated depreciation and amortization	(3,513)	(3,205)
DTE Electric | Dispatchable generation
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	8,428	7,969
Accumulated depreciation and amortization	(2,146)	(1,872)
DTE Electric | Renewable generation
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	3,933	3,074
Accumulated depreciation and amortization	(615)	(524)
DTE Electric | Other
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	3,445	3,220
Accumulated depreciation and amortization	(1,130)	(969)
DTE Gas
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	8,632	8,029
Accumulated depreciation and amortization	(1,945)	(1,990)
DTE Gas | Distribution
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	6,334	5,838
Accumulated depreciation and amortization	(1,319)	(1,365)
DTE Gas | Other
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	500	481
Accumulated depreciation and amortization	(210)	(193)
DTE Gas | Transmission
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	1,212	1,132
Accumulated depreciation and amortization	(278)	(300)
DTE Gas | Storage
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	586	578
Accumulated depreciation and amortization	$ (138)	$ (132)