Short-Term Credit Arrangements and Borrowings (Tables)

9 Months Ended

Sep. 30, 2026

Short-Term Debt [Abstract]

Schedule of Availability Under Credit Facilities

The availability under these facilities as of September 30, 2026 is shown in the following table:

	DTE Energy		DTE Electric		DTE Gas		Total
	(In millions)
Unsecured revolving credit facility, expiring October 2030	$	1,500	$	1,000	$	300	$	2,800
Unsecured letter of credit facility, expiring May 2028(a)	200		—		—		200
Unsecured letter of credit facility, expiring February 2027	200		—		—		200
Unsecured letter of credit facilities, expiring June 2028	225		—		—		225
Unsecured letter of credit facility(b)	—		75		—		75
Unsecured letter of credit facilities, expiring August 2027(a)	—		100		—		100
Unsecured letter of credit facilities, expiring August 2027(a)	—		200		—		200
Unsecured letter of credit facility(b)	—		225		—		225
Unsecured letter of credit facility(c)	—		150		—		150
Unsecured letter of credit facility(c)	—		150		—		150
	2,125		1,900		300		4,325
Amounts outstanding at September 30, 2026
Commercial paper issuances	—		737		—		737
Letters of credit	559		538		—		1,097
	559		1,275		—		1,834
Net availability at September 30, 2026	$	1,566	$	625	$	300	$	2,491

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(a)Uncommitted letter of credit facility.

(b)Uncommitted letter of credit facility with automatic renewal provision and therefore no expiration. DTE Energy may also utilize availability under this facility.

(c)Uncommitted letter of credit facility with automatic renewal provision and therefore no expiration.