Allocation by Investment Type (Detail)	12 Months Ended
	Oct. 25, 2013	Oct. 26, 2012
Retirement Benefits
Actual, Allocation Percentage	100.00%	100.00%
Equity Securities
Retirement Benefits
Target, Allocation Percentage, Range maximum	75.00%
Target, Allocation Percentage, Range minimum	55.00%
Actual, Allocation Percentage	63.90%	58.80%
Debt Securities
Retirement Benefits
Target, Allocation Percentage, Range maximum	45.00%
Target, Allocation Percentage, Range minimum	25.00%
Actual, Allocation Percentage	33.60%	38.70%
Cash
Retirement Benefits
Target, Allocation Percentage	0.00%
Actual, Allocation Percentage	2.50%	2.50%