Note 1 - Nature of Business and Summary of Significant Accounting Policies - Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Nov. 29, 2025	Nov. 30, 2024	Nov. 29, 2024	Dec. 02, 2023
Net income attributable to H.B. Fuller	$ 151,967	$ 130,256	$ 130,256	$ 144,906
Weighted-average common shares – basic (in shares)	54,602	54,932		54,332
Equivalent shares from share-based compensation plans (in shares)	753	1,697		1,626
Weighted-average common and common equivalent shares – diluted (in shares)	55,355	56,629		55,958
Basic earnings per share (in dollars per share)	$ 2.78	$ 2.37		$ 2.67
Diluted earnings per share (in dollars per share)	$ 2.75	$ 2.3		$ 2.59