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Pension and Other Postretirement Benefit Plans | 3 Months Ended
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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.

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- Definition The entire disclosure for pension and other postretirement benefits. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 + Details
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