Pension and Other Post-retirement Benefits - One Percentage Point Change Effects (Details) $ in Thousands	12 Months Ended
	Oct. 25, 2020 USD ($)
Pension Benefits
Effect of one-percentage-point change
Effect of one-percentage-point Increase in Discount Rate on Expense	$ (16,062)
Effect of one-percentage-point Decrease in Discount Rate on Expense	22,386
Effect of one-percentage-point Increase in Discount Rate on Benefit Obligation	(214,368)
Effect of one-percentage-point Decrease in Discount Rate on Benefit Obligation	271,048
Effect of one-percentage-point Increase in Expected Long-term Rate of Return on Plan Assets	(14,670)
Effect of one-percentage-point Decrease in Expected Long-term Rate of Return on Plan Assets	14,670
Effect of one-percentage-point Increase in Rate of Future Compensation Increase on Expense	5,146
Effect of one-percentage-point Increase in Rate of Future Compensation Decrease on Expense	(4,460)
Effect of one-percentage-point Increase in Rate of Future Compensation Increase on Benefit Obligation	12,382
Effect of one-percentage-point Increase in Rate of Future Compensation Decrease on Benefit Obligation	(10,800)
Post-retirement Benefits
Effect of one-percentage-point change
Effect of one-percentage-point Increase in Discount Rate on Expense	(362)
Effect of one-percentage-point Decrease in Discount Rate on Expense	5,183
Effect of one-percentage-point Increase in Discount Rate on Benefit Obligation	(26,065)
Effect of one-percentage-point Decrease in Discount Rate on Benefit Obligation	31,217
Effect of one-percentage-point Increase in Health Care Cost Trend Rate on Expense	1,061
Effect of one-percentage-point Decrease in Health Care Cost Trend Rate on Expense	(911)
Effect of one-percentage-point Increase in Health Care Cost Trend Rate on Benefit Obligation	28,661
Effect of one-percentage-point Decrease in Health Care Cost Trend Rate on Benefit Obligation	$ (24,573)