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Loans Receivable (excluding Covered Loans) Interest Rate Terms(Details) (USD $) In Thousands	Sep. 30, 2011	Sep. 30, 2010
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fixed interest rate	$ 7,440,673
Adjustable-Rate interest	858,401
Outstanding fixed rate origination commitments	67,542	79,871
Loans serviced for others	102,775	130,874
One Year from Balance Sheet Date [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fixed interest rate	336,641
Adjustable-Rate interest	289,814
More than One Within Three Years [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fixed interest rate	199,620
Adjustable-Rate interest	197,107
More than Three Within Five Years [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fixed interest rate	168,798
Adjustable-Rate interest	43,515
More than Five Within Ten Years [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fixed interest rate	626,142
Adjustable-Rate interest	158,636
More than Ten Within Twenty Years [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fixed interest rate	616,212
Adjustable-Rate interest	26,972
More than Twenty Years [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fixed interest rate	5,493,260
Adjustable-Rate interest	$ 142,357

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Reflects the carrying amount of loans charging borrowers fixed rates of interest.

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- Definition

Reflects the carrying amount of loans charging borrowers variable, or adjustable, rates of interest.

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- Definition

Fair value as of the balance sheet date of an asset representing net future revenues from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

+ References

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

-Publisher FASB

-Name FASB Staff Position (FSP)

-Number FAS140-4/FIN46(R)-8

-Paragraph B9

-Subparagraph a(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 140

-Paragraph 13A, 13B

-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 Statement of Financial Accounting Standard (FAS)

-Number 140

-Paragraph 17

-Subparagraph f(1)(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 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 50

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6863725&loc=d3e122625-111746

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Loans and Leases Receivable, Loan Origination Commitments Outstanding

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