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Mortgage Servicing Rights (Narrative) (Details) (USD $) | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2014 | Mar. 31, 2013 | Dec. 31, 2013 | Dec. 31, 2012
Participating Mortgage Loans [Line Items] |  |  |  |
Total MSR recognized by FHN | $ 4,687,000 | $ 109,102,000 | $ 72,793,000 | $ 114,311,000
Unpaid principal of mortgage loans serviced by FHN |  | 17,000,000,000 |  |
Percentage of single-family mortgage loans received as fees |  | 0.29% |  |
Percentage of outstanding balance generating for annual servicing inclusive excess interests |  | 0.34% |  |
Sale of MSR | (68,519,000) | 0 |  |
Transferred To Third Parties [Member] |  |  |  |
Participating Mortgage Loans [Line Items] |  |  |  |
Total MSR recognized by FHN |  | 11,000,000 |  |
Mortgage Banking Income [Member] |  |  |  |
Participating Mortgage Loans [Line Items] |  |  |  |
Servicing, late, and other ancillary fees | $ 20,100,000 | $ 12,100,000 |  |

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- Definition Sale of first lien mortgage servicing rights during the year. + References No definition available. + Details
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Balance Type: | credit
Period Type: | duration

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- Definition Percentage Of Outstanding Balance Generating For Annual Servicing + References No definition available. + Details
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- Definition Percentage Of Outstanding Balance Generating For Annual Servicing Including Excess Interests + References No definition available. + Details
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Namespace Prefix: | fhn_
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- Definition Unpaid Principal Of Mortgage Loans Serviced + References No definition available. + Details
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Balance Type: | debit
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- Definition The total amount of contractually specified servicing fees, late fees, and ancillary fees earned for each period for which results of operations are presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122596-111746 + Details
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- Details
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- Definition Fair value of an asset representing net future revenue 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 Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122625-111746 + Details
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