Property, Plant, and Equipment (Schedule of AFUDC and Interest Capitalized) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Abstract]
Allowance for debt funds used during construction and interest capitalized	$ 20	$ 13	$ 12
Allowance for equity funds used during construction	42	29	27
Total	62	42	39
DTE Electric
Property, Plant, and Equipment [Line Items]
Allowance for debt funds used during construction	15	11	11
Allowance for equity funds used during construction	40	26	25
Total	$ 55	$ 37	$ 36