Stockholders' Equity (Details) - $ / shares shares in Thousands	3 Months Ended	9 Months Ended
Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2021	Jul. 31, 2020
Stock Repurchase Program [Abstract]
Number of shares purchased	1,655	10	5,687	15,948
Average price per share	$ 57.66	$ 32.81	$ 48.37	$ 39.75
Remaining authorization at July 31:	14,298	19,988	14,298	19,988

Number of shares that have been repurchased during the period and are being held in treasury.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration