Auction Rate Securities (Tables)

3 Months Ended

Jan. 31, 2015

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	January 31, 2015	October 31, 2014
Discount rates	L + 0.30% – L + 5.03%	L + 0.28% – L + 4.06%
Yields	2.15%, L + 2.00%	2.15%, L + 2.00%
Average expected lives	4 – 10 years	4 – 10 years

L – One Month LIBOR