Retirement Benefits and Trusteed Assets (Tables)

6 Months Ended

Jun. 30, 2020

Schedule of Net Periodic Benefit Costs (Credits)

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


	Pension Benefits						Other Postretirement Benefits
	Three Months Ended June 30,
	2020		2019		2020		2019
	(In millions)
Service cost	$	24	$	21	$	7	$	6
Interest cost	47		54		14		17
Expected return on plan assets	(83)		(81)		(32)		(31)
Amortization of:
Net actuarial loss	43		34		3		3
Prior service credit	—		—		(5)		(2)
Net periodic benefit cost (credit)	$	31	$	28	$	(13)	$	(7)


	Pension Benefits						Other Postretirement Benefits
	Six Months Ended June 30,
	2020		2019		2020		2019
	(In millions)
Service cost	$	49	$	42	$	13	$	11
Interest cost	93		109		28		35
Expected return on plan assets	(166)		(162)		(64)		(62)
Amortization of:
Net actuarial loss	86		66		8		6
Prior service credit	—		—		(10)		(4)
Net periodic benefit cost (credit)	$	62	$	55	$	(25)	$	(14)

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


	Three Months Ended June 30,						Six Months Ended June 30,
	2020		2019		2020		2019
	(In millions)						(In millions)
Service cost	$	5	$	4	$	10	$	8
Interest cost	10		14		21		27
Expected return on plan assets	(22)		(21)		(44)		(42)
Amortization of:
Net actuarial loss	3		1		6		2
Prior service credit	(3)		(3)		(7)		(4)
Net periodic benefit credit	$	(7)	$	(5)	$	(14)	$	(9)