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Pension and Other Benefit Programs
 3 Months Ended
Dec. 28, 2019
Retirement Benefits [Abstract]  
Pension and Other Benefit Programs Pension and Other Benefit Programs
The components of net periodic benefit cost are as follows: 
 Pension PlansPostretirement Medical Plans
 Quarter EndedQuarter Ended
 December 28, 2019December 29, 2018December 28, 2019December 29, 2018
Service costs$103  $83  $3  $2  
Other costs (benefits):
Interest costs133  145  14  16  
Expected return on plan assets
(273) (239) (14) (14) 
Amortization of prior-year service costs
3  3  —  —  
Recognized net actuarial loss
131  64  3  —  
Total other costs (benefits)
(6) (27) 3  2  
Net periodic benefit cost
$97  $56  $6  $4  
During the quarter ended December 28, 2019, the Company did not make any material contributions to its pension and postretirement medical plans. The Company expects total pension and postretirement medical plan contributions in fiscal 2020 of approximately $600 million to $675 million. However, final funding amounts for fiscal 2020 will be assessed based on our January 1, 2020 funding actuarial valuation, which will be available in the fourth quarter of fiscal 2020.