Short-Term Credit Arrangements and Borrowings (Tables)

9 Months Ended

Sep. 30, 2020

Short-term Debt [Abstract]

Schedule of Line of Credit Facilities

The availability under these facilities as of September 30, 2020 is shown in the following table:

	DTE Energy		DTE Electric		DTE Gas		Total
	(In millions)
Unsecured letter of credit facility, expiring in February 2021	$	150	$	—	$	—	$	150
Unsecured letter of credit facility, expiring in August 2021	110		—		—		110
Unsecured term loan, expiring in March 2021	500		—		—		500
Unsecured term loans, expiring in April 2021	—		400		100		500
Unsecured term loan, expiring in June 2021	167		—		—		167
Unsecured Canadian revolving credit facility, expiring May 2023	83		—		—		83
Unsecured revolving credit facility, expiring April 2024	1,500		500		300		2,300
	2,510		900		400		3,810
Amounts outstanding at September 30, 2020
Letters of credit	212		—		—		212
Unsecured term loan	667		200		100		967
Revolver borrowings	21		—		—		21
	900		200		100		1,200
Net availability at September 30, 2020	$	1,610	$	700	$	300	$	2,610