Note 10 - Pension and Postretirement Benefits - Assume Health Care Trend Rates (Details)	12 Months Ended
	Nov. 28, 2015	Nov. 29, 2014	Nov. 30, 2013
Health care cost trend rate assumed for next year	7.00%	6.50%	7.25%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)	5.00%	5.00%	5.00%
Fiscal year that the rate reaches the ultimate trend rate	2024	2018	2019