Leases (Details Textuals) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Lessee, Lease, Description [Line Items]
Additional net investment in finance leases	$ 31
Depreciation expense associated with property under operating leases		$ 22	$ 24	$ 23
Interest income recognized under finance leases		17	$ 16	$ 5
Profit from the sale of membership interests		$ 11
Minimum
Lessee, Lease, Description [Line Items]
Lease terms		2 years
Term of operating lease contracts		2 years
Maximum
Lessee, Lease, Description [Line Items]
Lease terms		40 years
Term of operating lease contracts		24 years
DTE Electric | Minimum
Lessee, Lease, Description [Line Items]
Lease terms		2 years
DTE Electric | Maximum
Lessee, Lease, Description [Line Items]
Lease terms		40 years