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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 |

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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FASB Staff Position (FSP) -Number FAS140-4/FIN46(R)-8 -Paragraph B9 -Subparagraph a(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 + Details
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