Pension and Other Post-retirement Benefits - Actuarial Gains and Losses (Details) - USD ($) $ in Thousands	Oct. 27, 2019	Oct. 28, 2018
Pension Benefits
Amounts recognized in accumulated other comprehensive loss
Unrecognized Prior Service Credit	$ 40	$ 8,097
Unrecognized Actuarial Losses	(429,599)	(336,894)
Post-retirement Benefits
Amounts recognized in accumulated other comprehensive loss
Unrecognized Prior Service Credit	3,166	6,461
Unrecognized Actuarial Losses	$ (34,266)	$ (9,302)

Amount, before tax, of accumulated other comprehensive (income) loss for cost (credit) of benefit change attributable to participants' prior service from plan amendment or plan initiation of defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14A
-URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669686-108580

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (j)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant