Short-Term Credit Arrangements and Borrowings (Tables)

3 Months Ended

Mar. 31, 2026

Short-Term Debt [Abstract]

Schedule of Availability Under Credit Facilities

The availability under these facilities as of March 31, 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 June 2026(a)	150		—		—		150
Unsecured letter of credit facility, expiring February 2027	200		—		—		200
Unsecured letter of credit facilities, expiring June 2028	150		—		—		150
Unsecured letter of credit facility(b)	—		75		—		75
Unsecured letter of credit facilities, expiring December 2026	—		150		—		150
Unsecured letter of credit facility(b)	—		225		—		225
Unsecured letter of credit facility(c)	—		150		—		150
	2,000		1,600		300		3,900
Amounts outstanding at March 31, 2026
Letters of credit	364		414		—		778
	364		414		—		778
Net availability at March 31, 2026	$	1,636	$	1,186	$	300	$	3,122

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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.