Stockholders' Equity (Details) - $ / shares	2 Months Ended	12 Months Ended
Dec. 18, 2020	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2018
Share Repurchase Program
Number of shares purchased		15,952,000	6,619,000	12,108,000
Average price per share		$ 39.75	$ 35.28	$ 41.56
Remaining authorization at October 31		19,984,000	13,953,000	10,989,000
Subsequent Event [Member]
Share Repurchase Program
Number of shares purchased	2,400,000
Average price per share	$ 45.04

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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration