Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2018
Statement of Stockholders' Equity [Abstract]
Cash dividends paid on common stock (in dollars per share)	$ 1.00	$ 0.90	$ 0.80
Issuance of options (in shares)	870,011	1,544,962	1,495,367
Purchase of shares of common stock (in shares)	29,422	403,532	2,777,687