Regulatory Matters (Schedule of Regulatory Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Mar. 17, 2022	Dec. 31, 2021
Regulatory Assets [Line Items]
Regulatory assets	$ 4,336		$ 3,677
Less amount included in Current Assets	(450)		(195)
Regulatory assets, noncurrent	3,886		3,482
Securitized regulatory assets	206		0
Pension
Regulatory Assets [Line Items]
Regulatory assets	1,362		1,372
Other postretirement costs
Regulatory Assets [Line Items]
Regulatory assets	172		53
Fermi 2 asset retirement obligation
Regulatory Assets [Line Items]
Regulatory assets	972		613
Recoverable undepreciated costs on retired plants
Regulatory Assets [Line Items]
Regulatory assets	594		667
Accrued PSCR/GCR revenue
Regulatory Assets [Line Items]
Regulatory assets	450		160
Recoverable Michigan income taxes
Regulatory Assets [Line Items]
Regulatory assets	148		163
Enhanced tree trimming program deferred costs
Regulatory Assets [Line Items]
Regulatory assets	90		189
Energy Waste Reduction incentive
Regulatory Assets [Line Items]
Regulatory assets	88		79
Recoverable income taxes related to AFUDC equity
Regulatory Assets [Line Items]
Regulatory assets	76		68
Deferred pension costs
Regulatory Assets [Line Items]
Regulatory assets	63		16
Deferred environmental costs
Regulatory Assets [Line Items]
Regulatory assets	46		51
Unamortized loss on reacquired debt
Regulatory Assets [Line Items]
Regulatory assets	45		51
Customer360 deferred costs
Regulatory Assets [Line Items]
Regulatory assets	42		46
Non-service pension and other postretirement costs
Regulatory Assets [Line Items]
Regulatory assets	32		25
Nuclear performance evaluation and review committee tracker
Regulatory Assets [Line Items]
Regulatory assets	26		39
Removal costs asset
Regulatory Assets [Line Items]
Regulatory assets	19		0
Advanced distribution management system costs
Regulatory Assets [Line Items]
Regulatory assets	14		9
Other recoverable income taxes
Regulatory Assets [Line Items]
Regulatory assets	14		16
Transitional Reconciliation Mechanism
Regulatory Assets [Line Items]
Regulatory assets	13		8
Energy Waste Reduction
Regulatory Assets [Line Items]
Regulatory assets	8		20
Other
Regulatory Assets [Line Items]
Regulatory assets	62		32
DTE Electric
Regulatory Assets [Line Items]
Regulatory assets	3,640		3,136
Less amount included in Current Assets	(421)		(168)
Regulatory assets, noncurrent	3,219		2,968
Securitized regulatory assets	206	$ 230	0
DTE Electric | Pension
Regulatory Assets [Line Items]
Regulatory assets	997		1,056
DTE Electric | Other postretirement costs
Regulatory Assets [Line Items]
Regulatory assets	60		27
DTE Electric | Fermi 2 asset retirement obligation
Regulatory Assets [Line Items]
Regulatory assets	972		613
DTE Electric | Recoverable undepreciated costs on retired plants
Regulatory Assets [Line Items]
Regulatory assets	594		667
DTE Electric | Accrued PSCR/GCR revenue
Regulatory Assets [Line Items]
Regulatory assets	421		142
DTE Electric | Recoverable Michigan income taxes
Regulatory Assets [Line Items]
Regulatory assets	121		133
DTE Electric | Enhanced tree trimming program deferred costs
Regulatory Assets [Line Items]
Regulatory assets	90		189
DTE Electric | Energy Waste Reduction incentive
Regulatory Assets [Line Items]
Regulatory assets	71		63
DTE Electric | Recoverable income taxes related to AFUDC equity
Regulatory Assets [Line Items]
Regulatory assets	68		61
DTE Electric | Deferred pension costs
Regulatory Assets [Line Items]
Regulatory assets	41		0
DTE Electric | Deferred environmental costs
Regulatory Assets [Line Items]
Regulatory assets	0		0
DTE Electric | Unamortized loss on reacquired debt
Regulatory Assets [Line Items]
Regulatory assets	34		38
DTE Electric | Customer360 deferred costs
Regulatory Assets [Line Items]
Regulatory assets	42		46
DTE Electric | Non-service pension and other postretirement costs
Regulatory Assets [Line Items]
Regulatory assets	0		0
DTE Electric | Nuclear performance evaluation and review committee tracker
Regulatory Assets [Line Items]
Regulatory assets	26		39
DTE Electric | Removal costs asset
Regulatory Assets [Line Items]
Regulatory assets	19		0
DTE Electric | Advanced distribution management system costs
Regulatory Assets [Line Items]
Regulatory assets	14		9
DTE Electric | Other recoverable income taxes
Regulatory Assets [Line Items]
Regulatory assets	14		16
DTE Electric | Transitional Reconciliation Mechanism
Regulatory Assets [Line Items]
Regulatory assets	13		8
DTE Electric | Energy Waste Reduction
Regulatory Assets [Line Items]
Regulatory assets	0		0
DTE Electric | Other
Regulatory Assets [Line Items]
Regulatory assets	$ 43		$ 29