Auction Rate Securities (Tables)

12 Months Ended

Oct. 31, 2018

Investments, Debt and Equity Securities [Abstract]

Significant Assumptions Used to Determine Fair Value of Auction Rate Securities

Significant Assumptions Used to Determine the Fair Values of Our Auction Rate Securities

Assumption	October 31, 2018	October 31, 2017
Discount rates	L + 0.37%	L + 0.42% and L + 0.79%
Yields	L + 2.00%	2.15%, L + 2.00%
Average expected lives	4 years	4 – 10 years

L – One Month LIBOR