Pension and Other Post-retirement Benefits - Commitments (Details) - Pension Benefits - USD ($) $ in Thousands	12 Months Ended
	Oct. 25, 2020	Oct. 27, 2019
Investment commitment
Unfunded Commitment Balance	$ 16,122	$ 23,332
Domestic Equity
Investment commitment
Unfunded Commitment Balance	203	363
International Equity
Investment commitment
Unfunded Commitment Balance	$ 15,919	$ 22,969