v3.26.1
Retirement Benefits and Trusteed Assets (Tables)
 6 Months Ended
Jun. 30, 2026
Retirement Benefits [Abstract]  
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 BenefitsOther Postretirement Benefits
2026202520262025
(In millions)
Three Months Ended June 30,
Service cost$12 $12 $3 $3 
Interest cost52 54 15 16 
Expected return on plan assets(71)(72)(30)(30)
Amortization of:
Net actuarial loss25 22 1 1 
Prior service credit(1)— — — 
Net periodic benefit cost (credit)$17 $16 $(11)$(10)
Pension BenefitsOther Postretirement Benefits
2026202520262025
Six Months Ended June 30,
Service cost$25 $24 $7 $7 
Interest cost105 108 30 31 
Expected return on plan assets(143)(145)(60)(59)
Amortization of:
Net actuarial loss49 44 1 1 
Prior service credit(1)— — — 
Net periodic benefit cost (credit)$35 $31 $(22)$(20)
The following table details 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,
2026202520262025
(In millions)
Service cost$2 $3 $5 $6 
Interest cost12 11 23 23 
Expected return on plan assets(19)(19)(39)(38)
Amortization of:
Net actuarial gain(1)— (2)(1)
Net periodic benefit credit$(6)$(5)$(13)$(10)