Stockholders' Equity Attributable to Parent [Abstract] First Horizon National Corporation Shareholders' Equity: Equity: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Total liabilities and equity Total liabilities and equity Liabilities and Stockholders' Equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Ending Balance Beginning Balance Total equity Total equity Noncontrolling interest (Note 12) Noncontrolling interest Stockholders' Equity Attributable to Noncontrolling Interest, Beginning Balance Stockholders' Equity Attributable to Noncontrolling Interest, Ending Balance Stockholders' Equity Attributable to Noncontrolling Interest Stockholders' Equity Attributable to Parent Stockholders' Equity Attributable to Parent, Ending Balance Stockholders' Equity Attributable to Parent, Beginning Balance Total First Horizon National Corporation Shareholders' Equity Total First Horizon National Corporation Shareholders' Equity Undivided profits Undivided profits Retained Earnings (Accumulated Deficit), Beginning Balance Retained Earnings (Accumulated Deficit), Ending Balance Retained Earnings (Accumulated Deficit) Accumulated other comprehensive loss, net Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance Accumulated other comprehensive loss, net Other Additional Capital Capital surplus common stock warrant - CPP (Note 12) Common stock - $.625 par value (shares authorized - 400,000,000; shares issued - 263,335,004 on March 31, 2011; 236,585,067 on March 31, 2010; and 263,366,429 on December 31, 2010) (a) Common Stock, Value, Issued Common Stock, Value, Issued, Ending Balance Common Stock, Value, Issued, Beginning Balance Common Stock, Value, Issued, Total Preferred Stock, Value, Issued Preferred Stock, Value, Issued, Ending Balance Preferred Stock, Value, Issued, Beginning Balance Preferred Stock, Value, Issued, Total Preferred stock - no par value (shares authorized - 5,000,000; no shares issued on March 31, 2011 or December 31, 2010; shares issued - series CPP 866,540 on March 31, 2010) (Note 12) Total liabilities (Restricted - $.7 billion on March 31, 2011; $.9 billion on March 31, 2010; and $.8 billion on December 31, 2010) Liabilities Other Liabilities Other liabilities (Restricted - $.1 million on March 31, 2011; $.1 million on March 31, 2010; and $.1 million on December 31, 2010) Trading Liabilities Trading liabilities Federal Funds Purchased and Securities Sold under Agreements to Repurchase Federal funds purchased and securities sold under agreements to repurchase Total deposits (Restricted - $1.1 million on March 31, 2011; $1.5 million on March 31, 2010; and $1.2 million on December 31, 2010) Deposits Noninterest-bearing Deposit Liabilities Noninterest-bearing (Restricted - $1.1 million on March 31, 2011; $1.5 million on March 31, 2010; and $1.2 million on December 31, 2010) Interest-bearing Deposit Liabilities Interest-bearing Time Deposits, $100,000 or More Certificates of deposit $100,000 and more Other interest-bearing deposits All other interest-bearing deposit liabilities excluding savings and time deposits. Other interest-bearing deposits Savings Deposits, Savings Deposits Liabilities and equity: Liabilities and Stockholders' Equity [Abstract] Deposits [Abstract] Deposits: Assets: Assets [Abstract] Total assets (Restricted - $.7 billion on March 31, 2011; $.8 billion on March 31, 2010; and $.7 billion on December 31, 2010) Assets Other assets (Restricted - $16.7 million on March 31, 2011; $26.9 million on March 31, 2010; and $19.7 million on December 31, 2010) Other Assets Other assets Real estate acquired by foreclosure Real Estate Acquired Through Foreclosure Property, Plant and Equipment, Net Premises and equipment, net Intangible Assets, Net (Excluding Goodwill) Other intangible assets, net (Note 6) Goodwill Goodwill (Note 6) Total net loans (Restricted - $.7 billion on March 31, 2011; $.8 billion on March 31, 2010; and $.7 billion on December 31, 2010) Loans and Leases Receivable, Net Reported Amount Loans and Leases Receivable, Allowance Less: Allowance for loan losses (Restricted - $39.8 million on March 31, 2011; $59.8 million on March 31, 2010; and $47.5 million on December 31, 2010) (Note 4) Loans and Leases Receivable, Net of Deferred Income Loans, net of unearned income (Restricted - $.7 billion on March 31, 2011; $.9 billion on March 31, 2010; and $.8 billion on December 31, 2010) (Note 4) Available-for-sale Securities Securities available for sale (Note 3) Trading Securities Trading securities Interest-bearing cash Interest-bearing Deposits in Banks and Other Financial Institutions Cash, Cash Equivalents, and Federal Funds Sold Total cash and cash equivalents (Restricted - $4.9 million on March 31, 2011; $.1 million on March 31, 2010; and $3.1 million on December 31, 2010) Federal funds sold and securities purchased under agreements to resell Federal Funds Sold and Securities Purchased under Agreements to Resell Cash and Due from Banks Cash and due from banks (Restricted - $4.9 million on March 31, 2011; $.1 million on March 31, 2010; and $3.1 million on December 31, 2010) Diluted earnings/(loss) per share available to common shareholders (Note 8) Earnings Per Share, Diluted Diluted loss per share available to common shareholders (Note 8) Basic earnings/(loss) per share available to common shareholders (Note 8) Earnings Per Share, Basic Diluted earnings/(loss) per share from continuing operations (Note 8) Income (Loss) from Continuing Operations, Per Diluted Share Basic earnings/(loss) per share from continuing operations (Note 8) Income (Loss) from Continuing Operations, Per Basic Share Net income/(loss) available to common shareholders Net Income (Loss) Available to Common Stockholders, Basic Net Income (Loss) Attributable to Parent Net income/(loss) attributable to controlling interest Net income attributable to noncontrolling interest Net Income (Loss) Attributable to Noncontrolling Interest Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net income/(loss) Net income/(loss) Net income (loss) Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest Loss from continuing operations Income/(loss) from continuing operations Provision/(benefit) for income taxes Income Tax Expense (Benefit) Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Cumulative Effects of Changes in Accounting Principles, Noncontrolling Interest Income/(loss) before income taxes Total noninterest expense Noninterest Expense All other expense Other Noninterest Expense All other expense Amortization of intangible assets Amortization of Intangible Assets, Total Amortization of Intangible Assets Legal and professional fees Professional Fees Occupancy Occupancy, Net Labor and Related Expense Employee compensation, incentives, and benefits Adjusted gross income after provision for loan losses Revenues Total noninterest income Noninterest Income All other income and commissions Noninterest Income, Other Operating Income All other income and commissions Insurance commissions Insurance Commissions and Fees Trust services and investment management Fees and Commissions, Fiduciary and Trust Activities, Total Fees and Commissions, Fiduciary and Trust Activities Noninterest income: Noninterest Income [Abstract] Capital markets The major component of revenue in this line item is generated from the purchase and sale of securities as both principal and agent, and from other fee sources including loan sales, portfolio advisory, and derivative sales. Capital markets Net interest income after provision for loan losses Interest Income (Expense), after Provision for Loan Loss Interest Income (Expense), Net Net interest income Total interest expense Interest Expense Interest on term borrowings Interest Expense, Long-term Debt Interest Expense, Short-term Borrowings Interest on short-term borrowings Interest on trading liabilities Interest Expense, Trading Liabilities Savings Interest Expense, Savings Deposits Interest on deposits: Interest Expense, Deposits [Abstract] Interest expense: Interest Expense [Abstract] Total interest income Interest and Dividend Income, Operating Interest on trading securities Interest and Dividend Income, Securities, Trading or Measured at Fair Value Interest and Fee Income, Loans and Leases Held-for-sale Interest on loans held for sale Interest income: Interest Income (Expense), Net [Abstract] Equipment Expense Equipment rentals, depreciation, and maintenance Income/(loss) from discontinued operations, net of tax Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Noninterest expense: Noninterest Expense [Abstract] Consolidated Statements of Condition [Abstract] Consolidated Statements of Income [Abstract] Securities available for sale Other Comprehensive Income, Available-for-sale Securities Adjustment, Net of Tax, Total Other Comprehensive Income, Available-for-sale Securities Adjustment, Net of Tax Comprehensive income/(loss) Comprehensive Income, Net of Tax, Including Portion Attributable to Noncontrolling Interest Dividends, Preferred Stock, Cash Preferred stock - (CPP) dividends Stock Repurchased During Period, Value Common stock repurchased Common stock repurchased Stock-based compensation expense Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition, Value Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Dividends paid to noncontrolling interest of subsidiary preferred stock Stockholders' Equity, Other Other changes in equity Total interest paid Interest Paid, Net, Total Interest Paid, Net Income Taxes Paid, Net Total income taxes paid Total income taxes paid Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents at end of period Cash and cash equivalents at beginning of period Cash and Cash Equivalents, at Carrying Value, Total Cash and Cash Equivalents, Period Increase (Decrease) Net increase/(decrease) in cash and cash equivalents Net decrease in cash and cash equivalents Financing Activities Net Cash Provided by (Used in) Financing Activities [Abstract] Net Cash Provided by (Used in) Financing Activities Net cash used by financing activities Deposits Increase (Decrease) in Deposits, Total Increase (Decrease) in Deposits Short-term borrowings Short-term borrowings Proceeds from (Repayments of) Short-term Debt Proceeds from (Repayments of) Long-term Debt and Capital Securities [Abstract] Term borrowings: Cash Paid for Repurchase of Debt Net cash paid for extinguishment of debt Net cash paid for repurchase of debt Cash paid for early repurchase of bank debt. Payments/maturities Payments/Maturities Repayments of Long-term Debt, Total Repayments of Long-term Debt Cash dividends paid - preferred stock - noncontrolling interest Payments of Dividends, Noncontrolling Interest Cash dividends paid - preferred stock - CPP Payments of Dividends, Preferred Stock and Preference Stock Common Stock [Abstract] Common stock: Common stock. Repurchase of shares Payments for Repurchase of Common Stock Exercise of stock options Proceeds from Stock Options Exercised Investing Activities Net Cash Provided by (Used in) Investing Activities [Abstract] Operating Activities Net Cash Provided by (Used in) Operating Activities [Abstract] Net Increase Decrease in Financing Activities [Abstract] Net increase/(decrease) in: Net Increase Decrease In Financing Activities. Net Increase Decrease in Investing Activities [Abstract] Net decrease/(increase) in: Net Increase Decrease In Investing Activities. Net Cash Provided by (Used in) Investing Activities Net cash provided by investing activities Net cash provided/(used) by investing activities Securitization retained interests classified as trading securities Cash flows related to retained interests from securitizations that are classified as trading securities on the balance sheet. Securitization retained interests classified as trading securities Securitization retained interests classified as trading securities Payments to Acquire Property, Plant, and Equipment Purchases Payments to Acquire Available-for-sale Securities Purchases Sales and Purchases of Premises and Equipment [Abstract] Premises and equipment: Sales And Purchases of Premises And Equipment. Available for sale securities: Payments for (Proceeds from) Investments [Abstract] Maturities Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities Proceeds from Sale of Available-for-sale Securities Sales Net Increase Decrease in Operating Activities Payables [Abstract] Net increase/(decrease) in: Net Increase Decrease In Operating Activities Payables Net Increase Decrease in Operating Activities Receivables [Abstract] Net (increase)/decrease in: Net Increase Decrease In Operating Activities Receivables. Adjustments to reconcile net income/(loss) to net cash used by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Net cash used by operating activities Net Cash Provided by (Used in) Operating Activities Total adjustments Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities Trading liabilities Increase (Decrease) in Trading Liabilities Other liabilities Increase (Decrease) in Other Operating Liabilities Interest payable Increase (Decrease) in Interest Payable, Net Increase (Decrease) in Other Operating Assets Other assets Increase (Decrease) in Accrued Interest Receivable, Net Interest receivable Increase (decrease) in Capital Markets Receivables Capital markets receivables Capital markets receivables The net change during the reporting period in receivables that result from buying and selling securities for the firm's own account or from acting as an agent or intermediary in the sale of securities. Increase (decrease) in Capital Markets Payables Capital markets payables Capital markets payables The net change during the reporting period in payables that result from buying and selling securities for the firm's own account or from acting as an agent or intermediary in the sale of securities. Increase (Decrease) in Loans Held-for-sale Loans held for sale Increase (Decrease) in Trading Securities Trading securities Gain (Loss) on Sale of Property Plant Equipment Net losses on disposal of fixed assets Share-based Compensation Stock-based compensation expense Deferred Income Tax Expense (Benefit) Provision for deferred income tax Market value adjustment on mortgage servicing rights Mortgage Servicing Rights (MSR) Impairment (Recovery) Financial Information [Abstract] Financial Information [Abstract] Loans [Abstract] Loans [Abstract] Loans Notes Trade And Other Receivables Disclosure [Text Block] Loans Investment Securities [Abstract] Investment Securities [Abstract] Other comprehensive income/(loss): Components of Other Comprehensive Income/(loss) [Abstract] Noncontrolling Interest Noncontrolling Interest Controlling Interest [Member] Controlling Interest Controlling Interest. Preferred stock, par value Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized Preferred Stock, Shares Authorized Preferred stock, shares issued Preferred Stock, Shares Issued, Total Preferred Stock, Shares Issued Common stock, par value Common stock, par or stated value per share Common stock, shares authorized Common Stock, Shares Authorized Common Stock, Shares, Issued Common Stock, Shares, Issued, Total Common stock, shares issued Mortgage Servicing Rights [Abstract] Mortgage Servicing Rights [Abstract] Mortgage Servicing Rights. Intangible Assets [Abstract] Intangible Assets [Abstract] Intangible Assets. Regulatory Capital [Abstract] Regulatory Capital [Abstract] Regulatory Capital. Earnings per Share [Abstract] Earnings per Share [Abstract] Variable Interest Entities [Abstract] Variable Interest Entities [Abstract] Variable Interest Entities. Restructuring, Repositioning, and Efficiency [Abstract] Restructuring, Repositioning, and Efficiency. Restructuring, Repositioning, and Efficiency [Abstract] Mortgage Servicing Rights [Text Block] Mortgage Servicing Rights Disclosure items related to Mortgage Servicing Rights (MSR) retained from prior loan sales or securitizations. Pension, Savings, and Other Employee Benefits [Abstract] Pension and Other Employee Benefits [Abstract] Derivatives [Abstract] Derivatives Derivative Instruments and Hedging Activities Disclosure [Text Block] Variable Interest Entities Schedule of Variable Interest Entities [Text Block] Segment Reporting Disclosure [Text Block] Business Segment Information Pension, Savings, and Other Employee Benefits Pension and Other Postretirement Benefits Disclosure [Text Block] Earnings per Share Earnings Per Share [Text Block] Regulatory Capital Regulatory Capital Requirements under Banking Regulations [Text Block] Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Repurchase of shares Cash dividends paid - preferred stock - CPP Cash dividends paid - preferred stock - noncontrolling interest Proceeds from (Payments for) in Interest-bearing Deposits in Banks Interest-bearing cash Interest-bearing cash Entity Registrant Name Entity Central Index Key Document Type Document Period End Date Amendment Flag Current Fiscal Year End Date Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Filer Category Entity Public Float Entity Common Stock, Shares Outstanding Statement [Table] Statement [Line Items] Preferred stock dividends Preferred stock dividends Weighted average common shares (Note 8) Weighted Average Number of Shares Outstanding, Basic Diluted average common shares (Note 8) Weighted Average Number of Diluted Shares, Outstanding Consolidated Statements of Equity [Abstract] Statement, Equity Components [Axis] Equity Component [Domain] Consolidated Statements of Cash Flows [Abstract] Document and Entity Information [Abstract] Document And Entity Information. Foreclosed Real Estate Expense Foreclosed real estate Information Technology and Data Processing Operations services Contract employment Costs incurred related to payments for services rendered by non-employee temporary staff. Contract employment Document Fiscal Year Focus Document Fiscal Period Focus Loans held for sale The aggregate amount of loans receivable that will be sold to other entities. Includes mortgage and all other loans not classified as held for investment. A substantial portion of mortgage loans held for sale are reflected at elected fair value with the remainder stated at lower of cost or market. Loans held for sale Receivables from Brokers-Dealers and Clearing Organizations Capital markets receivables Other Long-term Debt Term borrowings (Restricted - $.7 billion on March 31, 2011; $.9 billion on March 31, 2010; and $.8 billion on December 31, 2010) Payables to Broker-Dealers and Clearing Organizations Capital markets payables Computer Software Costs incurred to purchase computer software, including maintenance contracts associated with the purchased software and also amortization expense associated with internally developed software. Computer software Federal Deposit Insurance Corporation Premium Expense Deposit insurance premiums Miscellaneous Loan Costs Miscellaneous loan costs Miscellaneous costs related to loans such as appraisals, inspections and other expenses that are not classified as closing costs. Interest and Fee Income, Loans and Leases Held-in-portfolio Interest and fees on loans Interest and Dividend Income, Securities, Available-for-sale Interest on investment securities Other Interest and Dividend Income Interest on other earning assets Interest Expense, Other Domestic Deposits Other interest-bearing deposits Provision for Loan, Lease, and Other Losses Provision for loan losses Provision for loan losses Preferred Stock Discount Accretion Preferred stock - (CPP) accretion Accretion of discount on preferred stock issued to the U.S. Treasury. Stock Issued During Period, Value, Share-based Compensation Common stock issued for stock options and restricted stock Acquisitions Divestitures [Text Block] Acquisitions and Divestitures Acquisitions Divestitures. Communication Communications and courier Fair Value of Assets And Liabilities [Abstract] Fair Value of Assets and Liabilities. Other Depreciation and Amortization Net other amortization and accretion Unrealized Gain (Loss) on Derivatives Decrease/(increase) in derivatives, net Decrease in derivatives, net Gains (Losses) on Extinguishment of Debt Gains on extinguishment of debt Payments for (Proceeds from) Loans and Leases Loans Payments for (Proceeds from) Loans and Leases, Total Loans Time Deposits Time deposits Mortgage Banking Mortgage banking Mortgage banking The noninterest income derived from mortgage banking activities including fees earned from servicing third party assets, changes in the fair value of servicing assets (net of hedging results), and origination income. Interest Expense, Time Deposits Time deposits Brokerage management fees and commissions Acting as an agent, a broker-dealer may buy and sell securities on behalf of its customers. In return for such services, the broker-dealer charges a commission. Each time a customer enters into a buy or sell transaction, a commission is earned by the broker-dealer for its selling and administrative efforts. For securities purchased, the commission is recorded as a receivable from customers; for securities sold, it is recorded as reductions in the payable to customers. Commissions earned are usually related to the broker-dealer's customers' trading volume and the dollar amounts of the trades. In general, commissions are for smaller trades of exchange-listed stocks and bonds made by retail customers. Revenue recognized in the period for (1) performance (incentive) fees based on the investment results achieved for management of certain institutional accounts and hedge funds, (2) schedule-based fees earned for management of mutual funds and closed-end funds, based either on average daily net assets or on a combination of the average daily net assets and gross income, and (3) other investment management and advisory fees. Brokerage management fees and commissions Available-for-sale Securities [Text Block] Investment Securities Transfers and Servicing of Financial Assets [Text Block] Loan Sales and Securitizations Fair Value, Measurement Inputs, Disclosure [Text Block] Fair Value of Assets & Liabilities Restructuring Repositioning and Efficiency [Text Block] Restructuring, Repositioning, and Efficiency Disclosure includes a description and timeline of activities implemented by management and net charges incurred to reposition and right-size the organization. Also includes information related to restructuring activities as defined by GAAP including exit and disposal activities, which should include facts and circumstances leading to the plan, the expected plan completion date, the major types of costs associated with the plan activities, total expected costs, the accrual balance at the end of the period, and the periods over which the remaining accrual will be settled. Interest Expense, Time Deposits, $100,000 or More Certificates of deposit $100,000 and more Additional Paid in Capital, Common Stock Additional Paid in Capital, Common Stock, Ending Balance Additional Paid in Capital, Common Stock, Beginning Balance Capital surplus Loan Sales and Securitizations [Abstract] Equity Securities Gains Losses Net Equity securities (gains)/losses, net Equity securities gains/(losses), net Equity securities losses, net The difference between the carrying value and the sale price of equity securities. This element includes investments in which the entity holds a small ownership stake (generally, less than 20% of the shares outstanding) and cannot exert significant influence. May also include other-than-temporary impairments of cost method investments or changes in the fair value of venture capital investments. Deposit transactions and cash management Includes amounts charged depositors for: (1) maintenance of their accounts (maintenance charges); (2) failure to maintain specified minimum balances on account; (3) exceeding the number of checks or transactions allowed to be processed in a given period; (4) checks drawn on no minimum balance deposit accounts; (5) withdrawals from nontransaction deposit accounts; (6) closing savings accounts before a specified minimum period of time has elapsed; (7) accounts which have remained inactive for extended periods of time or which have become dormant; (8) use of automated teller machines or remote service units; (9) checks drawn against insufficient funds that the bank assesses regardless of whether it decides to pay, return or hold the check; (10) issuing stop payment orders; (11) certifying checks; and (12) accumulating or disbursing funds deposited in IRAs or Keogh Plan accounts when not handled by the bank's trust department. This item does not include penalties assessed on the early withdrawal of time deposits. Also includes fees received from cash and treasury management products for business and corporate customers. Also includes service revenue earned by a depository institution that holds the account balances of other financial institutions and provides services thereto. Such services include check collection and item processing. Deposit transactions and cash management Other short-term borrowings and commercial paper Other Short-term Borrowings Fair Value Adjustment To Foreclosed Real Estate Fair value adjustment to foreclosed real estate The change in the estimated fair value of foreclosed real estate. Real estate acquired by foreclosure is carried at the lower of the outstanding loan amount or estimated fair value less estimated costs to sell the real estate. Estimated fair value is determined using appraised values with subsequent adjustments for deterioration in values that are not reflected in the most recent appraisal. Excess Tax Benefit from Share-based Compensation, Operating Activities Excess tax benefit from stock-based compensation arrangements Excess Tax Benefit from Share-based Compensation, Financing Activities Excess tax provision from stock-based compensation arrangements Acquisitions and Divestitures [Abstract] Acquisitions and Divestitures. Repurchase and foreclosure provision Repurchase and foreclosure provision Repurchase and foreclosure provision The charge taken to recognize estimated inherent losses to repurchase loans previously sold or securitized. For loans sold without recourse, reflects obligations to either repurchase the outstanding principal balance of a loan or make the purchaser whole for the economic benefits of a loan if it is determined that the loans sold were in violation of representations or warranties made at the time of sale. For loans sold with recourse, reflects indemnity and repurchase exposure if the loans default. Business Segment Information [Abstract] Other Events [Abstract] Other events. Restricted Cash And Due From Banks Restricted cash and due from banks. Restricted cash and due from bank Restricted loans Loans of consolidated variable interest entities that can only be used to settle the liabilities of those VIEs. Restricted loans Restricted allowance for loan losses Allowance for losses related to loans of consolidated variable interest entities that can only be used to settle the liabilities of those VIEs. Restricted allowance for loan losses Restricted Net Loans Restricted net loans. Restricted net loans Restricted total assets Total assets of consolidated variable interest entities that can only be used to settle the liabilities of those VIEs. Restricted total assets Restricted noninterest bearing deposits Deposits of consolidated variable interest entities related to the VIEs creditors which do not have recourse to assets of FHN other than to those assets specifically identified as restricted. Restricted noninterest bearing deposits Restricted total deposits Total deposits of consolidated variable interest entities related to the VIEs creditors which do not have recourse to assets of FHN other than to those assets specifically identified as restricted. Restricted total deposits Restricted term borrowings Long-term debt of consolidated variable interest entities related to the VIEs creditors which do not have recourse to assets of FHN other than to those assets specifically identified as restricted. Restricted term borrowings Restricted other liabilities Other liabilities of consolidated variable interest entities related to the VIEs creditors which do not have recourse to assets of FHN other than to those assets specifically identified as restricted. Restricted other liabilities Restricted total liabilities Total liabilities of consolidated variable interest entities related to the VIEs creditors which do not have recourse to assets of FHN other than to those assets specifically identified as restricted. Restricted total liabilities Common Stock, Dividends, Per Share, Declared Cash dividends declared per share Gain Loss On Debt Securities Net Debt securities gains, net Debt securities gains/(losses), net Gain loss on Debt securities net. Restricted other assets Other assets of consolidated variable interest entities that can only be used to settle the liabilities of those VIEs. Restricted other assets Preferred Stock and Other Capital [Text Block] Preferred Stock and Other Capital Preferred Stock And Other capital. Preferred Stock and Other Capital [Abstract] Transfer From Loans To Real Estate Acquired By Foreclosure Transfer from loans to other real estate owned Transfer from loans to other real estate owned Transfer from loans to other real estate owned. Servicing Asset at Fair Value, Amount Mortgage servicing rights (Note 5) Supplemental Cash Flow Information [Abstract] Supplemental Disclosures Schedule of Subsequent Events [Text Block] Other Events Cumulative Effect Of Initial Adoption Of New Accounting Principle For Asc 810 Adjustment to reflect adoption of amendments to ASC 810 Cumulative Effect Of Initial Adoption Of New Accounting Principle For Asc 810 Restricted Cash and Cash Equivalents Restricted total cash and cash equivalents Goodwill Impairment Loss Including Amount Attributable To Discontinued Operations Goodwill impairment Goodwill impairment loss including amount attributable to discontinued operations. Other Comprehensive Income, Defined Benefit Plans Adjustment, Net of Tax Recognized pension and other employee benefit plans net periodic benefit costs Recognized pension and other employee benefit plans net periodic benefit costs Unrealized Fair Value Adjustments Net Of Tax Abstract Unrealized fair value adjustments, net of tax: Unrealized fair value adjustments net of tax. Payments for Repurchase of Warrants Repurchase of common stock warrant - CPP Dividends, Common Stock, Cash Cash dividends declared (.01/share) Contingencies and Other Disclosures [Abstract] Contingencies and other disclosures. Contingencies and Other Disclosures [Text Block] Contingencies and Other Disclosures Contingencies and other disclosures. Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Financial Information Depreciation Premises And Equipment Including Amount Attributable To Discontinued Operations Depreciation and amortization of premises and equipment The amount of expense charged against earnings in the period to allocate the cost, net of salvage value, of premises and equipment over their remaining estimated productive lives. Amortization Of Intangible Assets Including Amount Attributable To Discontinued Operations Amortization of intangible assets The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by (used in) operations using the indirect method.