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Loans Receivable (excluding Covered Loans) Loans Impaired, Loan Commitments and Loans Serviced (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in impaired loans	$ 565,553	$ 476,822
Impaired loans with allocated reserves	44,167	123,862
Reserves on impaired loans	15,983	41,912
Average balance of impaired loans	523,363	486,665
Interest income from impaired loans	28,366	28,081
Outstanding fixed rate origination commitments	151,990	67,542
Loans serviced for others	$ 58,673	$ 102,775

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- Definition

Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-Subparagraph (g)

-URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953423-111524

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- Definition

Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (c)(2)

-URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524

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Financing Receivable, Average Balance of Impaired Loans

+ References

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- Definition

Impaired Financing Receivable with Allocated Reserves

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- Definition

Loans and Leases Receivable, Loan Origination Commitments Outstanding

+ References

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- Definition

Loans Serviced for Others

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- Definition

Recorded investment in impaired loans

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