Organization And Summary Of Significant Accounting Policies Narrative (Details) (USD $) In Millions, unless otherwise specified	Apr. 30, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Business Acquisition, Cost of Acquired Entity, Purchase Price	$ 1,500

The value of all consideration given or received by the Entity in the significant acquisition or disposal.

No definition available.

Name:	us-gaap_SignificantAcquisitionsAndDisposalsAcquisitionCostsOrSaleProceeds
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant