Asset Retirement Obligations (Details Textuals) - Fermi 2	Dec. 31, 2020 USD ($)
Asset Retirement Obligations [Line Items]
Nuclear decommissioning liabilities funded through surcharge and included in ARO balance	$ 2,200,000,000
Liabilities balance upon completion of decommissioning	$ 0

Nuclear Decommissioning Liabilities Funded Through Surcharge and Included In ARO Balance

No definition available.

Name:	dte_NuclearDecommissioningLiabilitiesFundedThroughSurchargeAndIncludedInAroBalance
Namespace Prefix:	dte_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant