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Pension and Other Post-retirement Benefits - Actuarial Gains and Losses (Details) - USD ($) $ in Thousands | Oct. 31, 2021 | Oct. 25, 2020
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Pension Benefits |  |
Amounts recognized in accumulated other comprehensive loss |  |
Unrecognized Prior Service Credit | $ (3,624) | $ (2,128)
Unrecognized Actuarial Losses | (305,433) | (402,289)
Post-retirement Benefits |  |
Amounts recognized in accumulated other comprehensive loss |  |
Unrecognized Prior Service Credit | (154) | 514
Unrecognized Actuarial Losses | $ (35,616) | $ (36,144)

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