Preferred and Common Stock - Narrative (Details) - USD ($)	Oct. 31, 2018	Oct. 31, 2017	Sep. 02, 2015
Stockholders' Equity Note [Abstract]
Preferred stock, shares authorized	500,000	500,000
Preferred stock, shares issued	0	0
Share repurchase program, authorized amount			$ 200,000,000.0
Share repurchase program, remaining authorized amount	$ 134,100,000

Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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