Note 12 - Share-based Payments - Schedule of Stock Options Activity (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	May 29, 2022	May 30, 2021	May 31, 2020
Outstanding, number of options (in shares)	3.0
Outstanding, weighted average exercise price, stock options (in dollars per share)	$ 30.70
Exercised, number of options (in shares)	(0.3)
Exercised, weighted average exercise price, stock options (in dollars per share)	$ 28.34
Exercised, aggregate intrinsic value, stock options	$ 2.0	$ 7.0	$ 3.8
Outstanding, number of options (in shares)	2.7	3.0
Outstanding, weighted average exercise price, stock options (in dollars per share)	$ 30.87	$ 30.70
Outstanding, average remaining contractual term, stock options (Year)	3 years 3 months 7 days
Outstanding, aggregate intrinsic value, stock options	$ 8.6
Exercisable, number of options (in shares)	2.7
Exercisable, weighted average exercise price, stock options (in dollars per share)	$ 30.87
Exercisable, average remaining contractual term, stock options (Year)	3 years 3 months 7 days
Exercisable, aggregate intrinsic value, stock options	$ 8.6