Stock-Based Compensation (Performance Share Awards Compensation Expense) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Compensation Expense Recorded [Line Items]
Stock-based compensation expense	$ 34	$ 103	$ 99
Performance Shares
Compensation Expense Recorded [Line Items]
Stock-based compensation expense	24	93	77
Cash settlements	13	11	9
Stock settlements	$ 71	$ 61	$ 56

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

No definition available.

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