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Pension and Retiree Medical Benefits (Notes)
 8 Months Ended
Sep. 07, 2024
Pension and Retiree Medical Benefits [Abstract]  
Pension and Retiree Medical Benefits Pension and Retiree Medical Benefits
The components of net periodic benefit cost/(income) for pension and retiree medical plans are as follows:
12 Weeks Ended
PensionRetiree Medical
U.S.International
9/7/20249/9/20239/7/20249/9/20239/7/20249/9/2023
Service cost$80 $76 $11 $10 $7 $7 
Other pension and retiree medical benefits income:
Interest cost135 137 36 34 7 7 
Expected return on plan assets(201)(197)(50)(45)(3)(3)
Amortization of prior service credits(6)(6)— (1)(1)(1)
Amortization of net losses/(gains)17 16 6 3 (6)(6)
Settlement losses8 — 7 — — — 
Special termination benefits8 — — — 2 — 
Total other pension and retiree medical benefits income(39)(50)(1)(9)(1)(3)
Total$41 $26 $10 $1 $6 $4 
 36 Weeks Ended
 PensionRetiree Medical
 U.S.International 
 9/7/20249/9/20239/7/20249/9/20239/7/20249/9/2023
Service cost$240 $227 $32 $28 $22 $20 
Other pension and retiree medical benefits income:
Interest cost405 411 99 93 22 24 
Expected return on plan assets(604)(590)(139)(126)(9)(9)
Amortization of prior service credits(17)(18)(1)(1)(3)(4)
Amortization of net losses/(gains)53 48 15 8 (18)(18)
Settlement losses8 — 9 — — — 
Special termination benefits23 (1)— — 2 — 
Total other pension and retiree medical benefits income(132)(150)(17)(26)(6)(7)
Total$108 $77 $15 $2 $16 $13 
We regularly evaluate opportunities to reduce risk and volatility associated with our pension and retiree medical plans.
In the 36 weeks ended September 7, 2024 and September 9, 2023, we made discretionary contributions of $150 million and $250 million, respectively, to our U.S. qualified defined benefit plans, and $27 million and $17 million, respectively, to our international defined benefit plans.