Stock-Based Compensation (Components of Stock Based Compensation) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Components of stock-based compensation [Abstract]
Stock-based compensation expense	$ 6	$ 33
Tax benefit	2	13
Stock-based compensation cost capitalized in property, plant and equipment	$ 1	$ 5

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