Property, Plant, and Equipment (Summary of Property by Classification) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	$ 39,346	$ 37,083
Accumulated depreciation and amortization	(10,579)	(10,139)
Net property, plant, and equipment	28,767	26,944
DTE Vantage
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	1,059	1,118
Accumulated depreciation and amortization	(469)	(545)
Other
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	179	208
Accumulated depreciation and amortization	(61)	(73)
DTE Electric
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	30,591	28,849
Accumulated depreciation and amortization	(8,095)	(7,676)
Net property, plant, and equipment	22,496	21,173
DTE Electric | Nuclear
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	3,684	3,394
Accumulated depreciation and amortization	(428)	(413)
DTE Electric | Renewables
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	2,567	2,522
Accumulated depreciation and amortization	(426)	(357)
DTE Electric | Fossil and other generation
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	8,789	8,640
Accumulated depreciation and amortization	(3,352)	(3,214)
DTE Electric | Distribution
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	12,502	11,414
Accumulated depreciation and amortization	(3,040)	(2,842)
DTE Electric | Other
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	3,049	2,879
Accumulated depreciation and amortization	(849)	(850)
DTE Gas
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	7,517	6,908
Accumulated depreciation and amortization	(1,954)	(1,845)
DTE Gas | Distribution
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	5,376	4,900
Accumulated depreciation and amortization	(1,330)	(1,265)
DTE Gas | Storage
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	607	593
Accumulated depreciation and amortization	(163)	(154)
DTE Gas | Transmission and other
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	1,534	1,415
Accumulated depreciation and amortization	$ (461)	$ (426)