Litigation And Related Contingencies (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Jul. 31, 2012 lawsuit item	Apr. 30, 2012
Loss Contingencies [Line Items]
Accrued obligations under indemnifications	$ 44.4	$ 79.0
Claims for severance benefits	8
Estimated litigation liability	650
Number of days of wages per tax season equal up to damages seek by plaintiffs in wage and hour class action lawsuits.	30 days
Number of lawsuits	10
Number of securitization transactions	33
Investigations, Legal Claims And Lawsuits [Member]
Loss Contingencies [Line Items]
Percentage of losses related to discontinued operations	70.00%
Pending Or Threatened Litigation [Member]
Loss Contingencies [Line Items]
Initial principal on loans securitized	50
Principal outstanding on loans securitized	41
Minimum [Member] \| Investigations, Legal Claims And Lawsuits [Member]
Loss Contingencies [Line Items]
Liability for legal claims	0
Maximum [Member] \| Investigations, Legal Claims And Lawsuits [Member]
Loss Contingencies [Line Items]
Liability for legal claims	132.0
Lemus Case [Member]
Loss Contingencies [Line Items]
Expected payment for settlement of litigation, maximum	35.0
Williams Case [Member]
Loss Contingencies [Line Items]
Expected payment for settlement of litigation, maximum	$ 7.5

Initial principal amount of loans securitized.

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- Definition

Losses related to discontinued operations, percentage

+ References

No definition available.

+ Details

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- Definition

Number of days of wages per tax season equal up to damages seek by plaintiffs in wage and hour class action lawsuits.

+ References

No definition available.

+ Details

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- Definition

Number of lawsuits

+ References

No definition available.

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- Definition

Number of securitization transactions

+ References

No definition available.

+ Details

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- Definition

Severance benefits claim.

+ References

No definition available.

+ Details

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- Definition

Aggregate carrying amount of the estimated litigation liability for known or estimated probable loss from litigation, which may include attorneys' fees and other litigation costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 1

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-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.25)

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- Definition

The portion of the carrying amount as of the balance sheet date of the combined total of loss contingency liabilities which is expected to be resolved within one year or the normal operating cycle, if longer.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 1

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 5

-Paragraph 9, 10, 11, 12

-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.

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- Definition

Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

+ References

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 5

-Paragraph 9, 10, 11, 12

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- Definition

The estimated maximum amount of possible loss from the contingency.

+ References

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-SubTopic 20

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-Publisher FASB

-Name FASB Interpretation (FIN)

-Number 14

-Paragraph 3

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 5

-Paragraph 9, 10, 11, 12

-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.

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-Publisher FASB

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-Paragraph 4

-Subparagraph (b)

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- Definition

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

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (e)

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