Property, Plant, and Equipment (Schedule of AFUDC and Capitalized Interest Rates (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Property, Plant, and Equipment [Line Items]
Non-regulated businesses capitalized interest	3.30%	3.90%	4.00%
DTE Electric
Property, Plant, and Equipment [Line Items]
AFUDC	5.46%	5.47%	5.43%
DTE Gas
Property, Plant, and Equipment [Line Items]
AFUDC	5.55%	5.56%	5.56%