Stockholders' Equity - Narrative (Details) - USD ($)					12 Months Ended
	Aug. 11, 2021	Feb. 09, 2021	Aug. 07, 2020	Feb. 10, 2020	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2019	Mar. 31, 2017	Dec. 31, 2011
Stockholders' Equity Note [Abstract]
Share repurchase program, maximum amount authorized								$ 1,000,000,000	$ 500,000,000
Share repurchase program, remaining authorized amount					$ 334,800,000
Dividends on common stock (in dollars per share)	$ 0.03	$ 0.03	$ 0.03	$ 0.03	$ 0.03	$ 0.03	$ 0.03
Dividends on common stock	$ 1,500,000	$ 1,500,000	$ 1,500,000	$ 1,500,000	$ 3,000,000.0	$ 3,000,000.0	$ 3,000,000.0