Stock-Based Compensation (Performance Share Awards Compensation Expense) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Compensation Expense Recorded [Line Items]
Compensation expense	$ 64	$ 58	$ 61
Performance Share Awards
Compensation Expense Recorded [Line Items]
Compensation expense	53	47	50
Cash settlements	13	15	7
Stock settlements	$ 39	$ 66	$ 38

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