Retirement Benefits and Trusteed Assets (Tables)

3 Months Ended

Mar. 31, 2026

Retirement Benefits [Abstract]

Schedule of Net Periodic Benefit Costs (Credits)

The following table details the components of net periodic benefit costs (credits) for pension benefits and other postretirement benefits for DTE Energy:

	Pension Benefits				Other Postretirement Benefits
	2026		2025		2026		2025
Three Months Ended March 31,
Service cost	$	13	$	12	$	4	$	4
Interest cost	53		54		15		15
Expected return on plan assets	(72)		(73)		(30)		(29)
Amortization of:
Net actuarial loss	24		22		—		—
Net periodic benefit cost (credit)	$	18	$	15	$	(11)	$	(10)

The following table details the components of net periodic benefit costs (credits) for other postretirement benefits for DTE Electric:

	Three Months Ended March 31,
	2026		2025
	(In millions)
Service cost	$	3	$	3
Interest cost	11		12
Expected return on plan assets	(20)		(19)
Amortization of:
Net actuarial gain	(1)		(1)
Net periodic benefit credit	$	(7)	$	(5)