Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2022

Accounting Policies [Abstract]

Schedule of Other Income

The following is a summary of DTE Energy's Other income:

	Three Months Ended June 30,				Six Months Ended June 30,
	2022		2021		2022		2021
	(In millions)
Contract services	$	7	$	7	$	14	$	15
Allowance for equity funds used during construction	6		6		14		13
Income from REF entities	—		21		—		45
Gains from rabbi trust securities(a)	—		2		—		4
Equity earnings (losses) of equity method investees	(4)		13		(15)		14
Other	2		5		6		6
	$	11	$	54	$	19	$	97

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(a)Losses from rabbi trust securities are recorded separately to Other expenses on the Consolidated Statements of Operations.

The following is a summary of DTE Electric's Other income:

	Three Months Ended June 30,				Six Months Ended June 30,
	2022		2021		2022		2021
	(In millions)
Contract services	$	7	$	7	$	14	$	15
Allowance for equity funds used during construction	5		6		12		12
Gains from rabbi trust securities allocated from DTE Energy(a)	—		2		—		4
Other	3		4		5		7
	$	15	$	19	$	31	$	38

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(a)Losses from rabbi trust securities are recorded separately to Other expenses on the Consolidated Statements of Operations.

Schedule of Effective Tax Rates

The interim effective tax rates of the Registrants are as follows:

	Effective Tax Rate
	Three Months Ended June 30,				Six Months Ended June 30,
	2022		2021		2022		2021
DTE Energy	(146)	%	1	%	(1)	%	(1)	%
DTE Electric	2	%	10	%	2	%	10	%

Schedule of Financing Receivables Classified by Internal Grade of Credit Risk

The following represents the Registrants' financing receivables by year of origination, classified by internal grade of credit risk. The related credit quality indicators and risk ratings utilized to develop the internal grades have been updated through June 30, 2022.

	DTE Energy								DTE Electric
	Year of Origination
	2022		2021		2020 and Prior		Total		2022 and Prior
	(In millions)
Notes receivable
Internal grade 1	$	—	$	—	$	21	$	21	$	17
Internal grade 2	17		3		92		112		—
Total notes receivable(a)	$	17	$	3	$	113	$	133	$	17
Net investment in leases
Net investment in leases, internal grade 1	$	—	$	—	$	38	$	38	$	—
Net investment in leases, internal grade 2	—		—		190		190		—
Total net investment in leases(a)	$	—	$	—	$	228	$	228	$	—

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(a)For DTE Energy, included in Current Assets — Other and Other Assets — Notes Receivable on the Consolidated Statements of Financial Position. For DTE Electric, included in Current Assets — Other on the Consolidated Statements of Financial Position.

Schedule of Roll-Forward of Activity for Financing Receivables Credit Loss Reserves

The following tables present a roll-forward of the activity for the Registrants' financing receivables credit loss reserves:

	DTE Energy						DTE Electric
	Trade accounts receivable		Other receivables		Total		Trade and other accounts receivable
	(In millions)
Beginning reserve balance, January 1, 2022	$	89	$	3	$	92	$	54
Current period provision	32		—		32		15
Write-offs charged against allowance	(45)		—		(45)		(30)
Recoveries of amounts previously written off	23		—		23		14
Ending reserve balance, June 30, 2022	$	99	$	3	$	102	$	53

	DTE Energy						DTE Electric
	Trade accounts receivable		Other receivables		Total		Trade and other accounts receivable
	(In millions)
Beginning reserve balance, January 1, 2021	$	101	$	3	$	104	$	57
Current period provision	53		1		54		36
Write-offs charged against allowance	(126)		(1)		(127)		(77)
Recoveries of amounts previously written off	61		—		61		38
Ending reserve balance, December 31, 2021	$	89	$	3	$	92	$	54

Schedule of Uncollectible Expense

Uncollectible expense for the Registrants is primarily comprised of the current period provision for allowance for doubtful accounts and is summarized as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2022		2021		2022		2021
	(In millions)
DTE Energy	$	14	$	4	$	34	$	35
DTE Electric	$	8	$	5	$	16	$	16