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Auction Rate Securities (Tables) | 12 Months Ended
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Oct. 31, 2019
Investments, Debt and Equity Securities [Abstract] |
Significant Assumptions Used to Determine Fair Value of Auction Rate Securities | Significant Assumptions Used to Determine the Fair Value of Our Auction Rate Security
Assumption |  | October 31, 2019 |  | October 31, 2018
Discount rates |  | L + 0.34% |  | L + 0.37%
Yields |  | L + 2.00% |  | L + 2.00%
Average expected lives |  | 4 years |  | 4 years
L – One Month LIBOR

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- Definition Tabular disclosure of input and valuation technique used to measure fair value and change in valuation approach and technique for each separate class of asset and liability measured on recurring and nonrecurring basis. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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