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Pension and Other Postretirement Benefit Plans
 3 Months Ended
Dec. 29, 2018
Retirement Benefits [Abstract]  
Pension and Other Postretirement Benefits Plans PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS
The components of the net periodic cost for the pension and postretirement benefit plans for the three months ended December 29, 2018, and December 30, 2017, are as follows (in millions):
 
Pension Plans
 
Three Months Ended
 
December 29, 2018
 
December 30, 2017
 
 
 
 
Service cost
$
1

 
$
2

Interest cost
16

 
16

Expected return on plan assets
(14
)
 
(16
)
Amortization of net actuarial loss
—

 
1

Settlement loss
19

 
—

Net periodic cost
$
22

 
$
3

 
Postretirement Benefit Plans
 
Three Months Ended
 
December 29, 2018
 
December 30, 2017
 
 
 
 
Amortization of prior service credit
$
(4
)
 
$
(6
)
Net periodic credit
$
(4
)
 
$
(6
)

We contributed $3 million and $5 million to our pension plans for the three months ended December 29, 2018 and December 30, 2017, respectively. We expect to contribute an additional $12 million during the remainder of fiscal 2019. The amount of contributions made to pension plans in any year is dependent upon a number of factors, including minimum funding requirements in the jurisdictions in which we operate. As a result, the actual funding in fiscal 2019 may differ from the current estimate.