Regulatory Matters (Tables)

12 Months Ended

Dec. 31, 2024

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
	2024		2023		2024		2023
Assets	(In millions)
Recoverable undepreciated costs on retiring plants	$	2,986	$	2,736	$	2,986	$	2,736
Recoverable pension and other postretirement costs
Pension	1,315		1,421		971		1,045
Other postretirement costs	91		163		—		67
Fermi 2 asset retirement obligation	951		952		951		952
Removal costs asset	501		223		501		223
Enhanced tree trimming program deferred costs	211		157		211		157
Recoverable Michigan income taxes	119		133		99		110
Recoverable income taxes related to AFUDC equity	116		89		107		80
Energy Waste Reduction incentive	102		90		82		72
Renewable ITC offset	89		—		89		—
Deferred environmental costs	43		46		—		—
Unamortized loss on reacquired debt	38		41		29		31
Customer360 deferred costs	34		38		34		38
Ludington contract dispute costs	31		10		31		10
Accrued PSCR/GCR revenue	—		55		—		55
Other	194		163		135		119
	6,821		6,317		6,226		5,695
Less amount included in Current Assets	(50)		(108)		(39)		(99)
	$	6,771	$	6,209	$	6,187	$	5,596
Securitized regulatory assets	$	690	$	758	$	690	$	758

Schedule of Regulatory Liabilities

	DTE Energy				DTE Electric
	2024		2023		2024		2023
Liabilities	(In millions)
Refundable federal income taxes	$	1,733	$	1,823	$	1,389	$	1,463
Removal costs liability	506		342		—		—
Non-service pension and other postretirement costs	255		199		94		84
Negative other postretirement offset	214		210		139		142
Accrued PSCR/GCR refund	136		21		111		—
Renewable energy	90		7		90		7
Other	103		72		86		63
	3,037		2,674		1,909		1,759
Less amount included in Current Liabilities	(181)		(71)		(156)		(49)
	$	2,856	$	2,603	$	1,753	$	1,710