Note 9 - Accounting for Share-based Compensation - Fair Value of Options Granted (Details) - $ / shares	12 Months Ended
	Nov. 30, 2024	Dec. 02, 2023	Dec. 03, 2022
Expected life (Year)	5 years 10 months 9 days	5 years	5 years
Weighted-average expected volatility	35.12%	35.28%	33.35%
Weighted-average expected dividend	1.13%	1.20%	0.95%
Weighted-average fair value of grants (in dollars per share)	$ 28.07	$ 22.41	$ 20.91
Minimum [Member]
Expected volatility range	33.88%	35.09%	33.33%
Risk-free interest rate	3.73%	3.48%	1.53%
Expected dividend yield range	1.03%	1.13%	0.94%
Maximum [Member]
Expected volatility range	35.14%	35.69%	34.34%
Risk-free interest rate	4.58%	4.72%	4.06%
Expected dividend yield range	1.19%	1.22%	1.23%