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Loan Servicing (Narrative) (Details) (USD $) | 3 Months Ended | 9 Months Ended
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Sep. 30, 2011 | Sep. 30, 2010 | Sep. 30, 2011 | Sep. 30, 2010
Loan Servicing [Abstract] |  |  |  |
Serviced sold mortgage loans | $ 1,410,000,000 | $ 1,510,000,000 | $ 1,410,000,000 | $ 1,510,000,000
Servicing fees included in other service income | 1,500,000 | 1,700,000 | 4,300,000 | 4,400,000
Serviced sold mortgage loans with recourse | $ 30,600,000 | $ 42,000,000 | $ 30,600,000 | $ 42,000,000

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- Definition Principal Amount Outstanding On Sold Loans Servicing Retained + References No definition available. + Details
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- Definition Principal Amount Outstanding On Sold Loans Servicing Retained With Recourse + References No definition available. + Details
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- Definition Income from servicing real estate mortgages, credit cards, and other financial assets held by others. Also include any premiums received in lieu of regular servicing fees on such loans only as earned over the life of the loans. May also be net of any related impairment of fair value of capitalized service costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher OTS -Name Federal Regulation (FR) -Number Title 12 -Chapter V -Section 563c.102 -Paragraph 13 -Subsection II -LegacyDoc This is a non-GAAP reference that was included in the 2009 taxonomy. It will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 13 -Article 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.13 (d)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
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