This is the principal amount outstanding for securitized loans only (across all types of loans).

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=6942082&loc=d3e107314-111719

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 140
-Paragraph 17
-Subparagraph i
-Clause 4
-Subclause a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4/FIN46(R)-8
-Paragraph B11
-Subparagraph b
-Clause 6
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Name:	us-gaap_PrincipalAmountOutstandingOnLoansSecuritized
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Litigation and Related Contingencies (Details) (USD $) In Millions	Oct. 14, 2010 2SS Holdings, Inc. [Member]	Apr. 30, 2011 Minimum [Member] California Wage and Hour Class Action Lawsuit [Member]	Apr. 30, 2011 Maximum [Member] California Wage and Hour Class Action Lawsuit [Member]	Apr. 30, 2011 Investigations, Legal Claims and Lawsuits [Member]	Apr. 30, 2010 Investigations, Legal Claims and Lawsuits [Member]	Apr. 30, 2011 RSM McGladrey Litigation [Member]	Apr. 30, 2011 Pending or Threatened Litigation [Member]
Cash paid for acquisition	$ 287.5
Liability for legal claims		0	70.0	70.6	35.5	41.5
Initial principal on loans securitized							50
Principal outstanding on loans securitized							$ 42