Regulatory Matters (Tables)

12 Months Ended

Dec. 31, 2022

Regulatory Assets and Liabilities Disclosure [Abstract]

Schedule of Regulatory Assets

The following are balances and a brief description of the Registrants' Regulatory assets and liabilities at December 31:

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

Schedule of Regulatory Liabilities

	DTE Energy				DTE Electric
	2022		2021		2022		2021
Liabilities	(In millions)
Refundable federal income taxes	$	1,908	$	2,117	$	1,534	$	1,729
Removal costs liability	371		679		—		283
Negative other postretirement offset	191		150		128		106
Non-service pension and other postretirement costs	154		110		73		54
Renewable energy	21		13		21		13
Energy Waste Reduction	11		27		11		27
Incremental tree trim surge	4		90		4		90
COVID-19 voluntary refund	—		30		—		30
Other	47		46		40		43
	2,707		3,262		1,811		2,375
Less amount included in Current Liabilities	(34)		(156)		(33)		(154)
	$	2,673	$	3,106	$	1,778	$	2,221