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Variable Interest Entities (Schedule of Principal Amount of Delinquent Loans, and Net Credit Losses) (Details) (USD $) | 3 Months Ended
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Mar. 31, 2013
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Principal amount of loans securitized and sold | $ 5,300,000,000 |
Residential Real Estate [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Principal Amount of Residential Real Estate Loans | 14,403,257,000 | [1],[2],[3]
Net Credit Losses | 62,627,000 | [3]
Principal Amount 90 Days Or More Past Due Or Nonaccrual [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Principal Amount of Residential Real Estate Loans | 700,000,000 |
Principal Amount 90 Days Or More Past Due Or Nonaccrual [Member] | Government National Mortgage Association Certificates And Obligations G N M A [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Principal Amount of Residential Real Estate Loans | $ 40,500,000 |
[1] | Amounts represent real estate residential loans in FHN’s portfolio, held-for-sale, and loans that have been transferred in proprietary securitizations and whole loan sales in which FHN had a retained interest other than servicing rights. Also included $5.3 billion of loans transferred to GSEs with any type of retained interest other than servicing rights.
[2] | Includes $.7 billion where the principal amount is 90 days or more past due or nonaccrual. Included in this amount was $40.5 million of GNMA guaranteed mortgages.
[3] | No delinquency or net credit loss data is provided for the loans transferred to FNMA or FHLMC because these agencies retain credit risk. See Note 11 - Contingencies and Other Disclosures for discussion related to repurchase obligations for loans transferred to GSEs or private investors.

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- Definition Total UPB of all loans securitized and sold through Government Sponsored Enterprises. + References No definition available. + Details
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- Definition Amount of net credit losses charged off. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (e)(5) -URI http://asc.fasb.org/extlink&oid=13989330&loc=d3e107314-111719 + Details
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- Definition This includes both the securitized and unsecuritized portion of the total principal amount. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=13989330&loc=d3e107314-111719 + Details
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