XML 152 R91.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Supplemental Guarantor Information Supplemental Guarantor Information (Level 4 Textuals) (Details) | Jul. 31, 2013
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Subsidiary of Common Parent [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%

X
- Details
Name: | dei_EntityInformationLineItems
Namespace Prefix: | dei_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The parent entity's interest in net assets of the subsidiary, expressed as a percentage. + References No definition available. + Details
Name: | us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant