Jointly-Owned Utility Plant (Tables)

12 Months Ended

Dec. 31, 2018

Jointly Owned Utility Plant, Net Ownership Amount [Abstract]

Schedule of Jointly-Owned Utility Plants

DTE Electric's ownership information of the two utility plants as of December 31, 2018 was as follows:

	Belle River		Ludington Hydroelectric Pumped Storage
In-service date	1984-1985		1973
Ownership interest	81%		49%
Investment in Property, plant, and equipment (in millions)	$	1,819	$	586
Accumulated depreciation (in millions)	$	1,068	$	187