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PENSION AND OTHER POST-RETIREMENT BENEFITS | 6 Months Ended
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Apr. 28, 2019
Retirement Benefits [Abstract] |
PENSION AND OTHER POST-RETIREMENT BENEFITS | PENSION AND OTHER POST-RETIREMENT BENEFITS Net periodic benefit cost for pension and other post-retirement benefit plans consists of the following:
| Pension Benefits
| Three Months Ended |  | Six Months Ended
(in thousands) | April 28, 2019 |  | April 29, 2018 |  | April 28, 2019 |  | April 29, 2018
Service cost | $ | 6,511 |  |  | $ | 7,903 |  |  | $ | 13,021 |  |  | $ | 15,806 |
Interest cost | 15,095 |  |  | 14,049 |  |  | 30,192 |  |  | 28,098 |
Expected return on plan assets | (23,121 | ) |  | (24,771 | ) |  | (46,246 | ) |  | (49,541 | )
Amortization of prior service cost | (699 | ) |  | (617 | ) |  | (1,397 | ) |  | (1,234 | )
Recognized actuarial loss | 3,701 |  |  | 4,540 |  |  | 7,402 |  |  | 9,079 |
Curtailment loss (gain) | — |  |  | — |  |  | 2,825 |  |  | — |
Net periodic cost | $ | 1,487 |  |  | $ | 1,104 |  |  | $ | 5,797 |  |  | $ | 2,208 |
| Post-retirement Benefits
| Three Months Ended |  | Six Months Ended
(in thousands) | April 28, 2019 |  | April 29, 2018 |  | April 28, 2019 |  | April 29, 2018
Service cost | $ | 173 |  |  | $ | 321 |  |  | $ | 347 |  |  | $ | 641 |
Interest cost | 3,009 |  |  | 2,832 |  |  | 6,174 |  |  | 5,664 |
Amortization of prior service cost | (669 | ) |  | (711 | ) |  | (1,338 | ) |  | (1,421 | )
Recognized actuarial loss | — |  |  | 45 |  |  | — |  |  | 89 |
Curtailment loss (gain) | — |  |  | — |  |  | (620 | ) |  | — |
Net periodic cost | $ | 2,513 |  |  | $ | 2,487 |  |  | $ | 4,563 |  |  | $ | 4,973 |
Non-service cost components of net pension and postretirement benefit cost are presented within interest and investment income on the Consolidated Statements of Operations. Curtailments were recognized in the first quarter of fiscal 2019 due to the sale of the Fremont facility.

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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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