Stockholders' Equity (Details) - USD ($)	9 Months Ended
	Jul. 31, 2019	Jul. 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	$ 23,234,000
Payments for repurchase of common stock	$ 23,234,000	$ 0