Stock-Based Compensation (Components of Stock Based Compensation) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Components of stock based-compensation [Abstract]
Stock-based compensation expense	$ 63	$ 71	$ 64
Tax benefit	12	13	13
Stock-based compensation cost capitalized in Property, plant, and equipment	$ 0	$ 16	$ 11

Represents the compensation cost capitalized during the period arising from liability and equity-based compensation arrangements (for example, shares of stock, units, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

No definition available.

Name:	dte_EmployeeServiceSharebasedCompensationAllocationofRecognizedPeriodCostsLiabilityandEquityCapitalizedAmount
Namespace Prefix:	dte_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration