Condensed Consolidated Statements of Equity (Unaudited) (Parentheticals) - shares	3 Months Ended
	Jan. 31, 2022	Oct. 31, 2021	Jul. 31, 2021	Jan. 31, 2021	Oct. 31, 2020
Purchase of treasury shares (in shares)	63,761	66,701	81,742	31,199	68,870