Supplemental Guarantor Information (Level 4 Textuals) (Details)	Oct. 31, 2019
Subsidiary Issuer [Member]
Entity Information [Line Items]
Subsidiary of Company, Ownership Percentage by Parent	100.00%
Guarantor Subsidiaries [Member]
Entity Information [Line Items]
Subsidiary of Company, Ownership Percentage by Parent	100.00%

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	dei_EntityInformationLineItems
Namespace Prefix:	dei_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration