Stock Plans - Non-Vested RSUs (Details) - Restricted Stock Units (RSUs)	12 Months Ended
	Oct. 31, 2020 $ / shares shares
Number of Shares
Nonvested RSUs, beginning balance (in shares) | shares	429,571
Granted (in shares) | shares	130,610
Vested and issued (in shares) | shares	(151,613)
Forfeited or expired (in shares) | shares	(39,948)
Nonvested RSUs, ending balance (in shares) | shares	368,620
Weighted- Average Grant Date Fair Value Per Share
Non-vested RSUs, beginning balance (in dollars per share) | $ / shares	$ 210.72
Granted (in dollars per share) | $ / shares	301.59
Vested and issued (in dollars per share) | $ / shares	192.10
Forfeited or exercised (in dollars per share) | $ / shares	242.12
Non-vested RSUs, ending balance (in dollars per share) | $ / shares	$ 247.09