Stock-Based Compensation (Components of Stock-Based Compensation) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Components of stock based-compensation [Abstract]
Stock-based compensation expense	$ 60	$ 54	$ 48
Tax benefit	$ 10	$ 10	$ 9

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