Stockholders' Equity - Summary of Stock Repurchase Program (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Oct. 31, 2019	Oct. 31, 2018
Shares Repurchased
Beginning balance (in shares)	0
Repurchase of common stock under the stock repurchase program (in shares)	3,838,466,000
Ending balance (in shares)	3,838,466,000	0
Weighted-Average Price per Share
Beginning balance (in USD per share)	$ 0
Repurchase of common stock under the stock repurchase program (in USD per share)	39.10
Ending balance (in USD per share)	$ 39.10	$ 0
Amount Repurchased (in thousands)
Beginning balance	$ 0
Repurchase of common stock under the stock repurchase program	150,076	$ 110,981
Ending balance	$ 150,076	$ 0