Stock-Based Compensation (Components of Stock Based Compensation) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Components of stock-based compensation [Abstract]
Stock-based compensation expense	$ 12	$ 22	$ 32	$ 72
Tax benefit	5	8	13	27
Stock-based compensation cost capitalized in Property, plant, and equipment	$ 2	$ 4	$ 5	$ 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