Short-Term Credit Arrangements and Borrowings (Tables)

9 Months Ended

Sep. 30, 2021

Short-term Debt [Abstract]

Schedule of Line of Credit Facilities

The availability under these facilities as of September 30, 2021 is shown in the following table:

	DTE Energy		DTE Electric		DTE Gas		Total
	(In millions)
Unsecured revolving credit facility, expiring April 2025(a)	$	1,500	$	500	$	300	$	2,300
Unsecured Canadian revolving credit facility, expiring May 2023	87		—		—		87
Unsecured letter of credit facility, expiring in February 2023	150		—		—		150
Unsecured letter of credit facility, expiring in July 2023	70		—		—		70
Unsecured letter of credit facility(b)	50		—		—		50
	1,857		500		300		2,657
Amounts outstanding at September 30, 2021
Revolver borrowings	74		—		—		74
Commercial paper issuances	—		159		128		287
Letters of credit	268		—		—		268
	342		159		128		629
Net availability at September 30, 2021	$	1,515	$	341	$	172	$	2,028

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(a)Total availability of $102 million expires in April 2024, including $67 million at DTE Energy, $22 million at DTE Electric, and $13 million at DTE Gas. All other availability expires in April 2025.

(b)Uncommitted letter of credit facility with automatic renewal provision for each July and therefore no expiration.