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Effect of New Accounting Pronouncements	6 Months Ended
Effect of New Accounting Pronouncements	Apr. 30, 2020
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Effect of New Accounting Pronouncements	Effect of New Accounting Pronouncements In June 2016, the FASB issued ASU 2016-13, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (ASU 2016-13) and subsequently issued amendments to the initial guidance: ASU 2018-19, ASU 2019-04 and ASU 2019-05 (collectively, Topic 326). Topic 326 requires measurement and recognition of expected credit losses for financial assets held. Topic 326 is effective for fiscal 2021, and earlier adoption is permitted beginning in the first quarter of fiscal 2020. The adoption of Topic 326 will not have material impact to the Company's consolidated financial statements.