Stockholders' Equity (Details) - USD ($)	12 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Dec. 13, 2018
Equity [Abstract]
Stock repurchase program authorized amount			$ 500,000,000
Shares repurchased for tax withholdings on vesting of restricted stock units	$ 29,059,000	$ 4,757,000