Stockholders' Equity (Details Textual 1) - $ / shares	1 Months Ended	3 Months Ended		9 Months Ended
	Aug. 31, 2021	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2021	Jul. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares purchased		1,655,000	10,000	5,687,000	15,948,000
Treasury Stock Acquired, Average Cost Per Share		$ 57.66	$ 32.81	$ 48.37	$ 39.75
Subsequent Event [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares purchased	140,300
Treasury Stock Acquired, Average Cost Per Share	$ 64.19