75000 - Document - Document and Entity Information
link:presentationLink
link:calculationLink
link:definitionLink
75010 - Statement - Consolidated Balance Sheets (Unaudited)
link:presentationLink
link:calculationLink
link:definitionLink
75020 - Statement - Consolidated Balance Sheets (Unaudited) (Parenthetical)
link:presentationLink
link:calculationLink
link:definitionLink
75030 - Statement - Consolidated Statements of Income (Unaudited)
link:presentationLink
link:calculationLink
link:definitionLink
75040 - Statement - Consolidated Statements of Comprehensive Income (Unaudited)
link:presentationLink
link:calculationLink
link:definitionLink
75050 - Statement - Consolidated Statements of Changes in Shareholders' Equity (Unaudited)
link:presentationLink
link:calculationLink
link:definitionLink
75060 - Statement - Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) (Unaudited)
link:presentationLink
link:calculationLink
link:definitionLink
75070 - Statement - Consolidated Statements of Cash Flows (Unaudited)
link:presentationLink
link:calculationLink
link:definitionLink
995455 - Disclosure - Business, Basis of Financial Statement Presentation and Principles of Consolidation
link:presentationLink
link:calculationLink
link:definitionLink
995465 - Disclosure - Discontinued Operations
link:presentationLink
link:calculationLink
link:definitionLink
995475 - Disclosure - Securities Available for Sale and Held to Maturity
link:presentationLink
link:calculationLink
link:definitionLink
995485 - Disclosure - LHFI and ACL, LHFI
link:presentationLink
link:calculationLink
link:definitionLink
995495 - Disclosure - Mortgage Banking
link:presentationLink
link:calculationLink
link:definitionLink
995505 - Disclosure - Other Real Estate
link:presentationLink
link:calculationLink
link:definitionLink
995515 - Disclosure - Leases
link:presentationLink
link:calculationLink
link:definitionLink
995525 - Disclosure - Deposits
link:presentationLink
link:calculationLink
link:definitionLink
995535 - Disclosure - Securities Sold Under Repurchase Agreements
link:presentationLink
link:calculationLink
link:definitionLink
995545 - Disclosure - Revenue from Contracts with Customers
link:presentationLink
link:calculationLink
link:definitionLink
995555 - Disclosure - Defined Benefit and Other Postretirement Benefits
link:presentationLink
link:calculationLink
link:definitionLink
995565 - Disclosure - Stock and Incentive Compensation
link:presentationLink
link:calculationLink
link:definitionLink
995575 - Disclosure - Contingencies
link:presentationLink
link:calculationLink
link:definitionLink
995585 - Disclosure - EPS
link:presentationLink
link:calculationLink
link:definitionLink
995595 - Disclosure - Statements of Cash Flows
link:presentationLink
link:calculationLink
link:definitionLink
995605 - Disclosure - Shareholders' Equity
link:presentationLink
link:calculationLink
link:definitionLink
995615 - Disclosure - Fair Value
link:presentationLink
link:calculationLink
link:definitionLink
995625 - Disclosure - Derivative Financial Instruments
link:presentationLink
link:calculationLink
link:definitionLink
995635 - Disclosure - Segment Information
link:presentationLink
link:calculationLink
link:definitionLink
995645 - Disclosure - Accounting Policies Recently Adopted and Pending Accounting Pronouncements
link:presentationLink
link:calculationLink
link:definitionLink
995655 - Disclosure - Accounting Policies Recently Adopted and Pending Accounting Pronouncements (Policies)
link:presentationLink
link:calculationLink
link:definitionLink
995665 - Disclosure - Discontinued Operations (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995675 - Disclosure - Securities Available for Sale and Held to Maturity (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995685 - Disclosure - LHFI and ACL, LHFI (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995695 - Disclosure - Mortgage Banking (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995705 - Disclosure - Other Real Estate (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995715 - Disclosure - Leases (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995725 - Disclosure - Deposits (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995735 - Disclosure - Securities Sold Under Repurchase Agreements (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995745 - Disclosure - Revenue from Contracts with Customers (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995755 - Disclosure - Defined Benefit and Other Postretirement Benefits (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995765 - Disclosure - Stock and Incentive Compensation (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995775 - Disclosure - Contingencies (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995785 - Disclosure - EPS (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995795 - Disclosure - Statements of Cash Flows (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995805 - Disclosure - Shareholders' Equity (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995815 - Disclosure - Fair Value (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995825 - Disclosure - Derivative Financial Instruments (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995835 - Disclosure - Segment Information (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995845 - Disclosure - Discontinued Operations - Additional Information (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995855 - Disclosure - Discontinued Operations - Summary of Financial Information Segregated from Continuing Operations and Reported as Discontinued Operations (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995865 - Disclosure - Discontinued Operations - Summary of Assets and Liabilities of Discontinued Operations on Consolidated Balance Sheet (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995875 - Disclosure - Discontinued Operations - Summary of Assets and Liabilities of Discontinued Operations on Consolidated Balance Sheet (Details) 2
link:presentationLink
link:calculationLink
link:definitionLink
995885 - Disclosure - Securities Available for Sale and Held to Maturity - Amortized Cost and Estimated Fair Value of Available for Sale and Held to Maturity Securities (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995895 - Disclosure - Securities Available for Sale and Held to Maturity - Additional Information (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995905 - Disclosure - Securities Available for Sale and Held to Maturity - Securities Held to Maturity by Credit Rating, as Determined by Moody's (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995915 - Disclosure - Securities Available for Sale and Held to Maturity - Securities with Gross Unrealized Losses, Segregated by Length of Impairment (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995925 - Disclosure - Securities Available for Sale and Held to Maturity - Contractual Maturities of Available for Sale and Held to Maturity Securities (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995935 - Disclosure - Securities Available for Sale and Held to Maturity - Contractual Maturities of Available for Sale and Held to Maturity Securities (Details) 2
link:presentationLink
link:calculationLink
link:definitionLink
995945 - Disclosure - Securities Available for Sale and Held to Maturity - Contractual Maturities of Available for Sale and Held to Maturity Securities (Details) 3
link:presentationLink
link:calculationLink
link:definitionLink
995955 - Disclosure - Securities Available for Sale and Held to Maturity - Contractual Maturities of Available for Sale and Held to Maturity Securities (Details) 4
link:presentationLink
link:calculationLink
link:definitionLink
995965 - Disclosure - LHFI and ACL, LHFI - Loan Portfolio Held for Investment (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995975 - Disclosure - LHFI and ACL, LHFI - Additional Information (Details 1)
link:presentationLink
link:calculationLink
link:definitionLink
995985 - Disclosure - LHFI and ACL, LHFI - Schedule of Amortized Cost Basis of Loans on Nonaccrual Status (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995995 - Disclosure - LHFI and ACL, LHFI - Aging Analysis of Past Due and Nonaccrual LHFI by Loan Type (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996005 - Disclosure - LHFI and ACL, LHFI - Impact of Modifications Classified as Troubled Debt Restructurings (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996015 - Disclosure - LHFI and ACL, LHFI - Troubled debt restructurings on financial effect (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996025 - Disclosure - LHFI and ACL, LHFI - Troubled Debt Restructuring Subsequently Defaulted (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996035 - Disclosure - LHFI and ACL, LHFI - Past Due Modifications Related to Loans Held For Investment (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996045 - Disclosure - LHFI and ACL, LHFI - Schedule of Amortized Cost Basis of Collateral-Dependent Loans by Class of Loans and Collateral Type (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996055 - Disclosure - LHFI and ACL, LHFI - Additional Information (Details 2)
link:presentationLink
link:calculationLink
link:definitionLink
996065 - Disclosure - LHFI and ACL, LHFI - Summary of Amortized Cost Basis of Loans by Credit Quality Indicator (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996075 - Disclosure - LHFI and ACL, LHFI - Summary of Trustmark's Portfolio Segments, Loan Classes, Loan Pools and the ACL Methodology and Loss Drivers (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996085 - Disclosure - LHFI and ACL, LHFI - Summary of Balance in Allowance for Loan Losses (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996095 - Disclosure - LHFI and ACL, LHFI - Change in Allowance for Loan Losses (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996105 - Disclosure - Mortgage Banking - Schedule of Activity in the Mortgage Servicing Rights (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996115 - Disclosure - Mortgage Banking - Additional Information (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996125 - Disclosure - Mortgage Banking - Schedule of Mortgage Loans Sold and Serviced for Others (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996135 - Disclosure - Other Real Estate - Changes and Gains (Losses), Net on Other Real Estate (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996145 - Disclosure - Other Real Estate - Other Real Estate, By Type of Property (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996155 - Disclosure - Other Real Estate - Other Real Estate, By Geographic Location (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996165 - Disclosure - Other Real Estate - Additional information (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996175 - Disclosure - Leases - Additional Information (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996185 - Disclosure - Leases - Components of the Trustmark's Net Investment in its Sales-Type and Direct Financing Leases (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996195 - Disclosure - Leases - Minimum Future Lease Payments for Trustmark's Leases Receivable (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996205 - Disclosure - Leases - Components of Net Lease Cost (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996215 - Disclosure - Leases - Cash Payments Included in Measurement of Lease Liabilities (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996225 - Disclosure - Leases - Balance Sheet Information and Weighted-Average Lease Terms and Discount Rates Related to Leases (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996235 - Disclosure - Leases - Future Minimum Rental Commitments Under Finance and Operating Leases (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996245 - Disclosure - Leases - Future Minimum Rental Commitments Under Finance and Operating Leases (Details) 2
link:presentationLink
link:calculationLink
link:definitionLink
996255 - Disclosure - Deposits - Deposits Summary (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996265 - Disclosure - Securities Sold Under Repurchase Agreement - Additional Information (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996275 - Disclosure - Securities Sold Under Repurchase Agreements - Schedule of Securities Sold Under Repurchase Agreements (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996285 - Disclosure - Revenue from Contracts with Customers - Additional Information (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996295 - Disclosure - Revenue from Contracts with Customers - Summary of Noninterest Income (Loss) Disaggregated by Reportable Operating Segment and Revenue Stream (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996305 - Disclosure - Defined Benefit and Other Postretirement Benefits - Net Periodic Benefit Cost (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996315 - Disclosure - Defined Benefit and Other Postretirement Benefits - Additional Information (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996325 - Disclosure - Stock and Incentive Compensation - Additional Information (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996335 - Disclosure - Stock and Incentive Compensation - Summary of Stock Plan Activity (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996345 - Disclosure - Stock and Incentive Compensation - Compensation Expense for Awards and Units Under Stock Plan (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996355 - Disclosure - Contingencies - Additional Information (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996365 - Disclosure - Contingencies - Summary of Changes in ACL on Off-Balance Sheet Credit Exposures (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996375 - Disclosure - EPS - Weighted-Average Shares Used to Calculate Basic and Diluted EPS (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996385 - Disclosure - EPS - Weighted-Average Antidilutive Stock Awards for Periods (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996395 - Disclosure - Statements of Cash Flows - Cash Flows Supplementary Disclosures (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996405 - Disclosure - Shareholders' Equity - Additional Information (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996415 - Disclosure - Shareholders' Equity - Table of Actual Regulatory Capital Amounts and Ratios (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996425 - Disclosure - Shareholders' Equity - Net Change in Components of Accumulated Other Comprehensive Income (Loss) and the Related Tax Effects (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996435 - Disclosure - Shareholders' Equity - Changes in Balances of Component of Accumulated Other Comprehensive Income (Loss) (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996445 - Disclosure - Fair Value - Financial Assets and Liabilities Measured at Fair Value Recurring Basis (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996455 - Disclosure - Fair Value - Changes in Level 3 Assets Measured at Fair Value on a Recurring Basis (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996465 - Disclosure - Fair Value - Additional Information (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996475 - Disclosure - Fair Value - Carrying Amounts and Estimated Fair Values of Financial Instruments (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996485 - Disclosure - Fair Value - Fair Value and the Contractual Principal Outstanding of the LHFS (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996495 - Disclosure - Derivative Financial Instruments - Additional Information (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996505 - Disclosure - Derivative Financial Instruments - Fair Value of Derivative Instruments (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996515 - Disclosure - Derivative Financial Instruments - Effects of Derivative Instruments on Statements of Operations (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996525 - Disclosure - Derivative Financial Instruments - Schedule of Amount Included in Other Comprehensive Income (Loss) for Derivative Instruments Designated as Hedges of Cash Flows (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996535 - Disclosure - Derivative Financial Instruments - Information about Financial Instruments that are Eligible for Offset in the Consolidated Balance Sheets (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996545 - Disclosure - Derivative Financial Instruments - Information about Financial Instruments that are Eligible for Offset in the Consolidated Balance Sheets (Details) 2
link:presentationLink
link:calculationLink
link:definitionLink
996555 - Disclosure - Segment Information - Additional Information (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996565 - Disclosure - Segment Information - Schedule of Segment Information (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996575 - Disclosure - Segment Information - Schedule of Segment Information (Parenthetical) (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996585 - Disclosure - Accounting Policies Recently Adopted and Pending Accounting Pronouncements - Additional Information (Details)
link:presentationLink
link:calculationLink
link:definitionLink
Cash Flows Supplementary Disclosures
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]
Operating cash flows (liability reduction) included in other operating activities, net
Variable Lease, Payment
Financial Instruments, Gross Amounts Not Offset in the Statement of Financial Position, Offsetting of Derivative Liabilities
Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Security Not Offset
Financial Instruments, Gross Amounts Not Offset in the Statement of Financial Position, Offsetting of Derivative Liabilities
Proceeds from Sale of Property, Plant, and Equipment, Total
Proceeds from sales of premises and equipment
Proceeds from Sale of Property, Plant, and Equipment
Retirement Plan Type
Retirement Plan Type [Axis]
Change in the accumulated gain (loss) on effective cash flow hedge derivatives
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax
Segments
Segments [Domain]
Past Due 90 Days or More [Member]
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Other commercial loans and leases.
Other Commercial Loans And Leases [Member]
Other Commercial Loans And Leases [Member]
Financing Receivable, Modified in Period, to Total Financing Receivables, Percentage
% of Total Class of Loan
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest
Income From Continuing Operations
Interest on securities:
Interest and Dividend Income, Securities, by Taxable Status [Abstract]
Financing Receivable, Allowance for Credit Loss, Writeoff, Total
Loans charged-off
Financing Receivable, Allowance for Credit Loss, Writeoff
Term Loans by Origination Year, Two Years Before Latest Fiscal Year
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year
Finance Lease, Liability, Total
Finance lease liabilities
Finance Lease, Liability
Weighted-average lease term:
Weighted Average Remaining Lease Term [Abstract]
Weighted-average remaining lease term.
Entity Incorporation, State or Country Code
Entity Incorporation, State or Country Code
Past Due 30-89 Days [Member]
Financing Receivables30 To89 Days Past Due [Member]
Financing receivables that are more than 30 days past due but fewer than 90 days past due.
Securities Held to Maturity, Estimated Fair Value [Abstract]
Debt Securities, Held-to-Maturity, Fair Value, Maturity [Abstract]
Finance Lease, Liability, to be Paid, Year Four
Finance leases, 2030
Balance Sheet Location
Statement of Financial Position Location, Balance [Domain]
Securities Held to Maturity
Securities Held To Maturity Policy [Text Block]
Securities Held to Maturity.
Due in one year or less
Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One
Financing Receivable Portfolio Segment
Financing Receivable Portfolio Segment [Axis]
Plan Name
Plan Name [Axis]
Entity Current Reporting Status
Entity Current Reporting Status
Other comprehensive income (loss), before reclassifications, before tax amount
Other Comprehensive Income (Loss), before Reclassifications, before Tax
Class of Financing Receivable
Class of Financing Receivable [Axis]
U.S. Government Agency Obligations [Member]
U.S. Government Agency Obligations [Member]
US Government Agencies Debt Securities [Member]
Federal Funds Purchased and Securities Sold under Agreements to Repurchase, Total
Federal Funds Purchased and Securities Sold under Agreements to Repurchase
Federal funds purchased
Federal funds purchased and securities sold under repurchase agreements
Commercial and Industrial Loans [Member]
Commercial And Industrial Loans [Member]
Class of financing receivables related to commercial and industrial financing receivables
Level 2 [Member]
Fair Value, Inputs, Level 2 [Member]
Contingencies
Commitments and Contingencies Disclosure [Text Block]
Sales-type Lease, Lease Income [Table Text Block]
Components of the Trustmark's Net Investment in its Sales-Type and Direct Financing Leases
Common stock, authorized (in shares)
Common Stock, Shares Authorized
Other Real Estate By Geographic Location [Table]
Other Real Estate By Geographic Location [Table]
Other real estate by geographic location.
Document Fiscal Period Focus
Document Fiscal Period Focus
Finance leases, total minimum lease payments
Finance Lease, Liability, to be Paid
Accounting Standards Update 2023-09 [Member]
Accounting Standards Update 2023-09 [Member]
Revenue from Contract with Customer [Abstract]
Entity Shell Company
Entity Shell Company
Wealth Management [Member]
Wealth Management Segment [Member]
Wealth Management [Member]
Segment provides customized solutions for customers by integrating financial services with traditional banking products and services such as money management, full-service brokerage, financial planning, personal and institutional trust and retirement services.
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff
Term Loans by Origination Year, Current Period Gross Charge-Offs, Three Years Before Latest Fiscal Year
Foreclosed Assets Remeasured After Initial Recognition Fair Value
The (re)measured fair value amount, as of the balance sheet date, of all assets obtained in full or partial satisfaction of a debt arrangement through foreclosure proceedings or defeasance; includes real and personal property; equity interests in corporations, partnerships, and joint ventures; and beneficial interests in trusts.
Foreclosed assets re-measured after initial recognition
Financing Receivable Payment Delay Modification Subsequent Default
Financing receivable payment Delay modification subsequent default.
Recorded Investment
Bank Card and Other Fees [Member]
Bankcard And Other Fees [Member]
Income earned from bank card and credit card services including late, over limit, and annual fees. This item excludes interest income earned on credit card balances and transactions. Includes interchange fees earned from bank card and credit card transactions. Also includes ATM and other banking fees.
Common Stock, Shares, Issued, Total
Common stock, issued (in shares)
Common Stock, Shares, Issued
Texas [Member]
TEXAS
Asset Class
Asset Class [Domain]
Statement [Table]
Statement [Table]
Other comprehensive income (loss) reclassification adjustment from AOCI pension and other post retirement benefit plans for net loss due to lump sum settlements net of tax.
Other Comprehensive Income Loss Reclassification Adjustment From A O C I Pension And Other Post Retirement Benefit Plans For Net Loss Due To Lump Sum Settlements Net Of Tax
Recognized net (gain) loss due to lump sum settlement
Operating right-of-use assets resulting from lease liabilities
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability
Accrued interest receivable
Interest Receivable
Miscellaneous [Member]
Miscellaneous [Member]
Miscellaneous.
Noninterest-bearing Deposit Liabilities, Total
Noninterest-bearing demand
Noninterest-bearing
Noninterest-Bearing Deposit Liabilities
Guarantor Obligations, Nature
Guarantor Obligations, Nature [Domain]
Trustmark Corporation [Member]
Trustmark Corporation [Member]
Trustmark Corporation (Trustmark) is a multi-bank holding company headquartered in Jackson, Mississippi. Through its subsidiaries, Trustmark operates as a financial services organization providing banking and financial solutions to corporate institutions and individual customers through over 150 offices in Florida, Mississippi, Tennessee and Texas.
Offsetting Assets [Table]
Offsetting Assets [Table]
Term Loans by Origination Year, Four Years Before Latest Fiscal Year
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year
Due after one year through five years
Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, after Year One through Five
Statement [Line Items]
Statement [Line Items]
Tabular disclosure of the components of the allowance for loan losses on acquired loans.
Schedule Of Components Of Allowance For Loan Losses On Acquired Loans Table [Text Block]
Components of the Allowance for Loan Losses on Acquired Loans
Actual Regulatory Capital Amount
Banking Regulation, Tier 1 Risk-Based Capital, Actual
External Credit Rating, Moody's [Domain]
External Credit Rating, Moody's
Entity Filer Category
Entity Filer Category
Investments in tax credit and other partnerships
Payments to Acquire Other Investments
Past Due 60 to 89 Days [Member]
Financial Asset, 60 to 89 Days Past Due [Member]
Amount of stock authorized for repurchase
Common Stock, Value, Outstanding
Shares [Roll Forward]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Recognized net (gain) loss due to lump sum settlements
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement
Total Liabilities and Shareholders' Equity
Liabilities and Equity
Vehicles [Member]
Vehicles [Member]
Residential Mortgage Pass-Through Securities Issued by FNMA and FHLMC [Member]
Residential Mortgage-Backed Securities [Member]
Recoveries
Financing Receivable, Allowance for Credit Loss, Recovery
Tabular disclosure of other real estate properties, excluding covered other real estate, by geographic location.
Other Real Estate Excluding Covered Other Real Estate By Geographic Location Table [Text Block]
Other Real Estate, By Geographic Location
Changes and Gains (Losses), Net on Other Real Estate
Changes And Losses Net On Other Real Estate Table [Text Block]
Changes and Losses Net on Other Real Estate [Table Text Block]
Noninterest Income
Noninterest income
Total Noninterest Income
Internal Allocations [Member]
Internal allocations.
Internal Allocations [Member]
Finance Lease, Liability, to be Paid, Year Three
Finance leases, 2029
Carrying Amounts and Estimated Fair Values of Financial Instruments
Fair Value, by Balance Sheet Grouping [Table Text Block]
Change in Net Actuarial Loss [Member]
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Including Portion Attributable to Noncontrolling Interest [Member]
Beneficiary [Member]
Beneficiary [Member]
Risk Participation Agreements in which Trustmark participates as the beneficiary.
Other Residential Mortgage-Backed Securities Issued or Guaranteed by FNMA, FHLMC or GNMA [Member]
Other Residential Mortgage Backed Securities Issued Or Guaranteed By F N M A F H L M C Or G N M A [Member]
Other securities collateralized by residential real estate mortgage considered as pass-through securities issued or guaranteed by FNMA, FHLMC or GNMA.
Mortgage Loan Sold And Serviced For Others
Total mortgage loans sold and serviced for others
Amount of loans that underlying mortgage loans sold and serviced for others on balance sheet date.
Actual Regulatory Capital Amount
Banking Regulation, Tier 1 Leverage Capital, Actual
Residential mortgage loans sold
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Cost of Mortgage Sold
Cash and short-term investments
Cash and Cash Equivalents, Fair Value Disclosure
Financial Asset, 30 to 59 Days Past Due [Member]
30 Days or More Past Due [Member]
Past Due 30 to 59 Days [Member]
Insurance commissions
Disposal Group Including Discontinued Operation Insurance Commissions
Disposal group including discontinued operation insurance commissions.
ALABAMA
Alabama [Member]
Aggregate notional amount of credit risk participation agreements
Derivative Asset, Notional Amount
Fair value and the contractual principal outstanding of the LHFS [Abstract]
Fair Value And The Contractual Principal Outstanding Of The L H F S [Abstract]
Fair value and the contractual principal outstanding of the LHFS [Abstract]
Goodwill, Ending Balance
Goodwill, Beginning Balance
Goodwill, Total
Goodwill
Goodwill
Income taxes paid
Income Taxes Paid
Finance Lease, Liability, to be Paid, Remainder of Fiscal Year
Finance Leases, 2026 (excluding the three months ended March 31, 2026)
Interest and Fee Income, Loans and Leases Held-in-portfolio, Total
Interest and fees on LHFS & LHFI
Interest and Fee Income, Loan and Lease, Held-in-Portfolio
Geographical
Geographical [Domain]
Net proceeds from bank-owned life insurance
Payments for (Proceeds from) Life Insurance Policies
Payments for (Proceeds from) Life Insurance Policies, Total
Additions
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Other Addition
PCL, LHFI
Provision for Credit Losses Expensed
Provision for credit losses expensed.
Other comprehensive income (loss), before tax amount
Other Comprehensive Income (Loss), before Tax
State and Other Political Subdivision Loans [Member]
State And Other Political Subdivision Loans [Member]
State and Other Political Subdivision Loans.
Additional Paid in Capital, Common Stock, Ending Balance
Additional Paid in Capital, Common Stock, Beginning Balance
Capital surplus
Additional Paid in Capital, Common Stock
Sales-Type and Direct Financing Leases, Payment to be Received, Fiscal Year Maturity [Abstract]
Number of key quality ratios
Number Of Key Quality Ratios
This line item represents the number of key quality ratios on which entity's loan portfolio credit quality indicators focused.
Gross Amounts Offset in the Statement of Financial Position, Offsetting of Derivative Assets
Derivative Assets Gross Amounts Offset
Gross amount of derivative assets offset in the statement of financial position.
Increase (Decrease) in Federal Funds Purchased and Securities Sold under Agreements to Repurchase, Net, Total
Net change in federal funds purchased and securities sold under repurchase agreements
Increase (Decrease) in Federal Funds Purchased and Securities Sold under Agreements to Repurchase, Net
Actual Regulatory Capital Amount
Common Equity Tier One Risk Based Capital
Common Equity Tier 1 Risk Based Capital as defined in the regulations.
Share Repurchase Program
Share Repurchase Program [Axis]
Guarantor Obligations, Nature
Guarantor Obligations, Nature [Axis]
Exposure for commercial non accrual loans to be reviewed on individual basis
Exposure For Commercial Non Accrual Loans To Be Reviewed On Individual Basis
Exposure for commercial non accrual loans to be reviewed on an individual basis.
Not Topic 606 [Member]
Calculated Under Revenue Guidance In Effect Before Topics 606 [Member]
Calculated under revenue guidance in effect before topics 606 member.
Other construction and other real estate secured member.
Other Construction and Other Real Estate Secured [Member]
Other Construction and Other Real Estate Secured [Member]
Increase (Decrease) in Other Operating Assets and Liabilities, Net, Total
Other operating activities, net
Increase (Decrease) in Other Operating Assets and Liabilities, Net
Schedule of amortized cost basis of collateral dependent loans by class of loans.
Schedule Of Amortized Cost Basis Of Collateral Dependent Loans by Class of Loans [Table Text Block]
Schedule Of Amortized Cost Basis Of Collateral Dependent Loans by Class of Loans
Special Mention - RR 7 [Member]
Special Mention [Member]
Mortgage Banking [Abstract]
Contractual Maturities of Available for Sale and Held to Maturity Securities
Investments Classified by Contractual Maturity Date [Table Text Block]
Basic EPS
Basic
Earnings Per Share, Basic
Disaggregation of Revenue [Table Text Block]
Summary of Noninterest Income (Loss) Disaggregated by Reportable Operating Segment and Revenue Stream
Securities Held to Maturity, Gross Unrealized Gains
Debt Securities, Held-to-Maturity, Accumulated Unrecognized Gain
Defined Benefit and Other Postretirement Benefits
Retirement Benefits [Text Block]
Commercial Portfolio Segment [Member]
Commercial and Industrial Loans [Member]
Commercial Portfolio Segment [Member]
Recognized Net Loss Due to Lump Sum Settlements [Member]
Accumulated Defined Benefit Plans Adjustment, Net Transition Including Portion Attributable to Noncontrolling Interest [Member]
Payments for (Proceeds from) Loans and Leases, Total
Payments for (Proceeds from) Loans and Leases
Net change in LHFI
Balance at beginning of period
Balance at end of period
Servicing Asset at Fair Value, Amount
Mortgage servicing rights (MSR)
Nonaccrual With No ACL
Financing Receivable Recorded Investment Nonaccrual With No A C L
Financing receivable recorded investment nonaccrual with no ACL.
Retirement Plan Type
Retirement Plan Type [Domain]
Financing Receivable, Modified, Accumulated
Post-Modification Outstanding Recorded Investment
Disposals
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Other Deduction
Adjustments to reconcile net income to net cash provided by operating activities:
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract]
Hedging Designation
Hedging Designation [Domain]
Tier One Leverage Capital Required To Be Well Capitalized To Average Assets1
Tier One Leverage Capital Required To Be Well Capitalized To Average Assets1
Minimum Regulatory Provision to be Well-Capitalized Ratio
Subsegments [Axis]
Share Repurchase Program
Share Repurchase Program [Domain]
Financing Receivable Allowance For Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Loss [Line Items]
Serviced GNMA loans eligible for repurchase
Loans Available For Repurchase
Loans available for repurchase.
Serviced GNMA loans eligible for repurchase
Securities Available for Sale, Estimated Fair Value [Abstract]
Debt Securities, Available-for-Sale, Fair Value, Fiscal Year Maturity [Abstract]
Change in net unrealized holding loss on securities transferred to held to maturity
Other Comprehensive Income Loss Transfers From Available For Sale To Held To Maturity Securities Net Of Tax
Other comprehensive income loss transfers from available for sale to held to maturity securities net of tax.
Net periodic benefit cost [Abstract]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Moody's, Aaa Rating [Member]
Aaa [Member]
Nonowner-occupied - All Other [Member]
Nonowner Occupied All Other [Member]
Nonowner-occupied - All Other.
Accounting Standards Update [Axis]
Accounting Standards Update
Time-Vested Awards [Member]
Time Vested Award [Member]
Share based compensation based on time.
Shareholders' Equity
Equity, Attributable to Parent [Abstract]
Changes in Level 3 Assets Measured at Fair Value on a Recurring Basis
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
Common Equity Tier 1 Capital (to Risk Weighted Assets) [Member]
Common Equity Tier1 Capital To Risk Weighted Assets [Member]
The amount of common equity tier 1 capital required as related to risk weighted assets regarding requirements for capital adequacy purposes under the regulatory framework for prompt corrective action.
Entity Small Business
Entity Small Business
Stock Repurchase Program Four [Member]
Stock Repurchase Program Four [Member]
Stock repurchase program four.
Interest Income
Interest and Dividend Income, Operating [Abstract]
1 - 4 Family Residential Properties [Member]
Family Residential14 Properties [Member]
Class of property related to 1-4 family residential properties.
Hedging Designation
Hedging Designation [Axis]
Retained Earnings (Accumulated Deficit), Ending Balance
Retained Earnings (Accumulated Deficit), Beginning Balance
Retained Earnings (Accumulated Deficit), Total
Retained earnings
Retained Earnings (Accumulated Deficit)
Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff
Financing Receivable, Revolving, Current Period Gross Charge-Offs
Reserve for securities held to maturity
Debt Securities, Held-to-maturity, Allowance for Credit Loss, Ending Balance
Debt Securities, Held-to-maturity, Allowance for Credit Loss, Beginning Balance
Debt Securities, Held-to-maturity, Allowance for Credit Loss, Total
Debt Securities, Held-to-Maturity, Allowance for Credit Loss
Securities held to maturity, net of ACL
Services and fees
Services And Fees
Expenses and fees incurred from communication, data processing, advertising, security, professional, and other service-related fees.
Gross Unrealized (Losses), 12 Months or More
Gross Unrealized Losses12 Months Or More
This item represents the excess of amortized cost basis over fair value of securities that have been in a loss position for twelve months or longer for those securities which are categorized as available-for-sale and held-to-maturity securities.
Unused Commitments on Modified Loans
Unused commitments on modified loans.
Unused commitments on modified loans
Stock and Incentive Compensation
Share-Based Payment Arrangement [Text Block]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Tier 1 Capital (to Risk Weighted Assets) [Abstract]
Banking Regulation, Tier 1 Risk-Based Capital [Abstract]
Lease Contractual Term [Axis]
Leases [Abstract]
Sales-Type and Direct Financing Leases, Payment to be Received, Maturity [Table Text Block]
Minimum Future Lease Payments for Trustmark's Leases Receivable
Net Amount, Offsetting of Derivative Assets
Derivative Asset, Including Not Subject to Master Netting Arrangement, after Offset and Deduction
Weighted Average Number Diluted Shares Outstanding Adjustment, Total
Dilutive shares
Weighted Average Number of Shares Outstanding, Diluted, Adjustment
Pension and Other Postretirement Benefit Plans [Member]
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member]
Lessee, Lease, Description [Line Items]
Amendment Flag
Amendment Flag
Taxable
Interest Income, Securities, Operating, Taxable
Commercial LHFI [Member]
Commercial Borrower [Member]
Loss Contingencies [Line Items]
Loss Contingencies [Line Items]
Other Real Estate, Foreclosed Assets, and Repossessed Assets [Abstract]
Stock Repurchase Program Three [Member]
Stock repurchase program three.
Stock Repurchase Program 3 [Member]
Federal Funds Sold and Securities Purchased under Agreements to Resell, Total
Federal Funds Sold and Securities Purchased under Agreements to Resell
Federal funds sold and securities purchased under reverse repurchase agreements
Interest on lease liabilities
Finance Lease, Interest Expense
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, Total
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff
Total LHFI, Current Period Gross Charge-Offs
Summary of Stock Plan Activity
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable [Table Text Block]
Entity Address, Postal Zip Code
Entity Address, Postal Zip Code
Net cash from operating activities
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation
Balance Sheet Information and Weighted-Average Lease Terms and Discount Rates Related to Leases
Schedule Of Balance Sheet Information And Weighted Average Lease Terms And Discount Rates Related To Leases Table [Text Block]
Schedule of balance sheet information and weighted-average lease terms and discount rates related to leases.
Substandard [Member]
Substandard - RR 8 [Member]
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description
Balance of loans remaining under some type of concession related to COVID-19
Loans Receivable Under Concession Related To C O V I D19
Loans receivable under concession related to COVID 19.
Common Stock [Member]
Common Stock [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Table]
Accounting Standards Update and Change in Accounting Principle [Table]
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff
Term Loans by Origination Year, Current Period Gross Charge-Offs, Before Latest Fiscal Year
Table of Actual Regulatory Capital Amounts and Ratios
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block]
Lessee, Operating Lease, Liability, to be Paid, Year Three
Operating leases, 2029
Fair Value of Derivative Instruments
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]
Number of days used as baseline in evaluating collateral documentation exceptions for loan policy
Term Of Past Due Used In Evaluating Collateral Exceptions
The minimum of days past due used as a baseline for the evaluation of collateral documentation under the entity's loan policy.
Portion at Fair Value Measurement [Member] [Default]
Fair Value Disclosure Item Amounts [Default]
Portion at Fair Value Measurement [Member]
Entity Address, Address Line One
Entity Address, Address Line One
Change in accounting principle, accounting standards update, immaterial effect [true false]
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false]
Fair Value Hierarchy and NAV [Axis]
Level 2 [Member]
Earnings Per Share [Abstract]
Earnings Per Share (EPS)
Consumer Loans [Member]
Consumer Portfolio Segment [Member]
Statement of cash flows specific transaction amounts [Abstract]
Supplemental Cash Flow Information [Abstract]
Nonowner-Occupied - Hotel/Motel [Member]
Nonowner Occupied Hotel Motel [Member]
Nonowner Occupied Hotel/Motel.
Tier 0ne risk based capital to risk weighted assets 1.
Tier One Risk Based Capital To Risk Weighted Assets 1
Actual Regulatory Capital Ratio
Other assets - derivatives
Net Amounts of Assets presented in the Statement of Financial Position, Offsetting of Derivative Assets
Derivative Asset
LHFS past due 90 days or more
Covered Serviced Financing Receivable Recorded Investment Equal To Greater Than90 Days Past Due
Loans held for sale eligible for repurchase that are equal to or greater than 90 days past due.
Other Liabilities [Member]
Other Liabilities [Member]
Sales-Type and Direct Financing Leases, Payment to be Received, Year Four
2030
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff
Term Loans by Origination Year, Current Period Gross Charge-Offs, Current Fiscal Year
Balance Sheet Location
Statement of Financial Position Location, Balance [Axis]
Operating lease right-of-use assets
Operating Lease, Right-of-Use Asset
Finance leases, imputed interest
Finance Lease, Liability, Undiscounted Excess Amount
Key market regions
Key Market Regions In Qualitative Reserve Allocation
Number of key market regions the entity operates that are included in the qualitative reserve allocation review process.
Information about Financial Instruments that are Eligible for Offset in the Consolidated Balance Sheets
Schedule Of Information About Financial Instruments That Are Eligible For Offset In Consolidated Balance Sheets Table [Text Block]
Tabular disclosure of derivative and other financial assets and liabilities that are subject to offsetting, including master netting arrangements.
Maximum concentration of loan as a percentage of total LHFI
Concentration Risk Credit Risk Financial Instrument Maximum Exposure Percentage
The maximum concentration for any loan concentration as a percentage of total loans held for investment.
Reclassification from accumulated other comprehensive income, current period, before tax amount
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax
Reclassification from accumulated other comprehensive income, current period, before tax amount
Purchases of securities available for sale
Purchases of securities available for sale
Payments to Acquire Debt Securities, Available-for-Sale
Other liabilities
Disposal Group, Including Discontinued Operation, Other Liabilities
Gain (Loss) on Sale of Investments
Gain (Loss) on Sale of Investments, Total
Securities gains (losses), net
Securities (gains) losses, net
Document Type
Document Type
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
OTC Written Options (Rate Locks) [Member]
O T C Written Options [Member]
An option traded over-the-counter, as opposed to a listed stock option. The OTC option has a direct link between buyer and seller, has no secondary market, and has no standardization of striking prices and expiration dates.
Trustmark Bank [Member]
Trustmark Bank.
Trustmark Bank [Member]
Individually Evaluated for Credit Loss
Financing Receivable, Individually Evaluated for Credit Loss
Total noninterest expense
Disposal Group Including Discontinued Operation Total Noninterest Expense
Disposal group including discontinued operation total noninterest expense.
General Banking [Member]
General Banking Segment [Member]
General Banking [Member]
General banking.
Nonresidential Nonowner- Occupied - Apartments [Member]
Nonresidential Nonowner Occupied Apartments [Member]
Nonresidential Nonowner- Occupied - Apartments.
Post-Modification Outstanding Recorded Investment
Financing Receivable, Modified in Period, Amount
Post-Modification Outstanding Recorded Investment
Operating leases:
Operating Lease Cost [Abstract]
Operating Lease Cost.
Entity Central Index Key
Entity Central Index Key
Assumed average prepayment speed
Assumed Average Prepayment Speed
The estimated speed of prepayments of principal on financial assets which may be one of the factors applied in estimating the fair value of servicing assets and servicing liabilities not shown as a percentage, measured in CPR (conditional prepayment rate).
Net unrealized gains (losses) on available for sale securities and transferred securities:
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax [Abstract]
Carrying amounts of assets included as part of discontinued operations:
Disposal Group, Including Discontinued Operation, Assets [Abstract]
Stockholders Equity [Table]
Stockholders Equity [Table]
Stockholders equity.
Investments, Debt and Equity Securities [Abstract]
Proceeds from disposition of business, net
Proceeds from Sales of Business, Affiliate and Productive Assets
Net change in cash and cash equivalents
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation
Operating Activities [Axis]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Weighted-average antidilutive stock awards
Guarantor [Member]
Financial Guarantee [Member]
Repurchase and retirement of common stock (in shares)
Stock Repurchased and Retired During Period, Shares
Current [Member]
Financing Receivables Current Due [Member]
Financing receivables current due.
Amount before tax and reclassification adjustments of unrealized holding gain (loss) on available-for-sale securities at date of transfer.
Net unrealized holding loss on AFS Securities at date of transfer
Other Comprehensive Income Loss Unrealized Holding Gain Loss On Securities Arising During Period Before Tax At Date Of Transfer
Due after five years through ten years
Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, after Year 5 through 10
Accounting Standards Update
Accounting Standards Update [Domain]
Other comprehensive income (loss), net of tax
Other comprehensive income (loss), net of tax
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent
Liabilities [Abstract]
Liabilities
Financing Receivable Recorded Investment [Line Items]
Financing Receivable, Credit Quality Indicator [Line Items]
Increase (Decrease) in Other Operating Liabilities, Total
Net change in other liabilities
Increase (Decrease) in Other Operating Liabilities
Securities Available for Sale, Amortized Cost
Securities available-for-sale, amortized cost
Debt Securities, Available-for-Sale, Amortized Cost
Securities available for sale
Total
Securities Available for Sale, Estimated Fair Value
Securities available for sale, at fair value (amortized cost: $1,896,135-2026 $1,842,444-2025; allowance for credit losses (ACL): $0-2026; $0-2025)
Noninterest Income [Abstract]
Noninterest Income
Nonowner-Occupied- Senior Living/ Nursing Homes [Member]
Nonowner Occupied Senior Living Nursing Homes [Member]
Nonowner Occupied Senior Living Nursing Homes.
Doubtful - RR 9 [Member]
Doubtful [Member]
Debt Disclosure [Abstract]
Defined Benefit Plans And Other Postretirement Benefit Plans Disclosures [Table]
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Table]
Other Real Estate [Table]
Other Real Estate [Table]
Other real estate.
Additions
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases
Supplemental Cash Flow Elements [Abstract]
Estimate Fair Value [Member]
Estimate of Fair Value Measurement [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]
Total notional amount
Derivative, Notional Amount
Gross Amounts Offset in the Statement of Financial Position, Offsetting of Derivative Liabilities
Derivative Liabilities Gross Amounts Offset
Gross amount of derivative liabilities offset in the statement of financial position.
Current Fiscal Year End Date
Current Fiscal Year End Date
Gains (losses), net on the sale of other real estate included in other real estate expense
Gains (Losses) on Sales of Other Real Estate
Other real estate sales, net gains (losses)
% of Total Class of Loan
Financing Receivable Modifications Percentage of Total Class of Loan Recorded Investment 2
Financing receivable modifications percentage of total class of loan recorded investment 2.
Offsetting Derivative Assets
Offsetting Derivative Assets [Abstract]
Document Quarterly Report
Document Quarterly Report
Cash Collateral Posted, Gross Amounts Not Offset in the Statement of Financial Position, Offsetting of Derivative Liabilities
Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Not Offset
Loan Portfolio [Abstract]
Receivables [Abstract]
Termination value of derivatives
Termination Value Of Derivatives
Termination value of derivatives in a net liability position, which includes accrued interest but excludes any adjustment for nonperformance risk, related to a provision from agreements with each of its derivative counterparties stating that the entity will be considered on default on its derivative obligations if the entity defaulted on payment of indebtedness, including default where repayment of the indebtedness has not been accelerated by the lender.
Entity Address, State or Province
Entity Address, State or Province
Nonvested shares, beginning of period (in shares)
Nonvested shares, end of period (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number
Collateral Posted
Collateral Already Posted, Aggregate Fair Value
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Comprehensive income
Write-downs of allowance for foreclosed assets after initial recognition
Write Down Of Allowance After Initial Recognition Of Foreclosure
The overvalued amount that is written down to reduce the carrying value of an asset, that was valued at initial recognition of foreclosure, to the fair value.
Securities Available for Sale, Gross Unrealized Gains
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax
Interest-bearing demand
Interest Bearing Demand Deposit
Amount of money in interest-bearing domestic and foreign accounts that entitle the depositor to withdraw funds at any time without prior notice, also known as demand deposits.
Discontinued Operations
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]
Geographical
Geographical [Axis]
Class of property related to construction, land development and other land.
Construction Land Development And Other Land Properties [Member]
Construction, Land Development And Other Land Properties [Member]
Other comprehensive income (loss), change in net unrealized holding loss on securities transferred to held to maturity, tax (expense) benefit
Other Comprehensive Income Change In Unrealized Holding Gain Loss On Securities Transferred To Held To Maturity Tax
Other comprehensive income change in unrealized holding gain loss on securities transferred to held to maturity tax.
Internal Credit Assessment
Internal Credit Assessment [Axis]
(Write-downs) recoveries
Write Downs On Real Estate Excluding Covered Real Estate
Write downs on other real estate due to revaluations.
Compensation Expense for Awards and Units Under Stock Plan
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]
Stock repurchase program 2.
Stock Repurchase Program Two [Member]
Stock Repurchase Program 2 [Member]
Time-Vested Units [Member]
Time based award.
Time Based Award [Member]
Gross Unrealized (Losses), Less than 12 Months
Gross Unrealized Losses Less Than12 Months
This item represents the excess of amortized cost basis over fair value of securities that have been in a loss position for less than twelve months for those securities which are categorized as available-for-sale and held-to-maturity securities.
Tier 1 Capital (to Risk Weighted Assets) [Member]
Tier1 Capital To Risk Weighted Assets [Member]
The amount of tier 1 capital required as related to risk weighted assets regarding requirements for capital adequacy purposes under the regulatory framework for prompt corrective action.
Lease term remaining on lessor's sales-type and direct financing lease.
Sales Type and Direct Financing Leases Lease Remaining Term
Remaining Lease Term
Total noninterest income
Disposal Group Including Discontinued Operation Total Noninterest Income
Disposal group including discontinued operation total noninterest income.
Reclassification from accumulated other comprehensive income, current period, net of tax amount
Amounts reclassified from accumulated other comprehensive income (loss)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax
Reclassification from accumulated other comprehensive income, current period, net of tax amount
Interest Expense, Operating
Total Interest Expense
Interest expense
Securities Financing Transaction [Table]
Security Financing Transaction [Table]
Summary of Changes in ACL on Off-Balance Sheet Credit Exposures
Schedule Of Changes In Off Balance Sheet Credit Loss Liability Table [Text Block]
Schedule of changes in off-balance sheet credit loss liability.
Sales-Type and Direct Financing Leases, Payment to be Received
Lease receivable
Net Interest Income After PCL
Interest Income (Expense), after Provision for Loan Loss
Schedule of Securities Sold Under Repurchase Agreements
Schedule Of Securities Sold Under Repurchase Agreements Table [Text Block]
Tabular disclosure of the Securities Sold Under Repurchase Agreements.
Total amortized cost, before mortgage-backed securities
Available For Sale Debt Securities Amortized Cost Before Mortgage Backed Securities
Available for sale debt securities amortized cost before mortgage backed securities.
Mortgage Banking, Net [Member]
Mortgage Banking Net [Member]
The noninterest income, net of associated expenses, derived from mortgage banking activities (fees and commissions), including fees earned from servicing third-party assets.
Securities sold under repurchase agreements by collateral pledged
Security Sold under Agreement to Repurchase, Including Not Subject to Master Netting Arrangement, after Offset and Deduction [Abstract]
Due to market changes
Asset at Fair Value, Changes in Fair Value Resulting from Changes in Assumptions
Service charges on deposit accounts
Service Charges On Deposit Accounts
Service charges on deposit accounts.
Proceeds from Sale of Debt Securities, Available-for-Sale
Proceeds from sales of securities available for sale
Minimum Regulatory Capital Required Ratio
Common Equity Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets
The minimum Common Equity Tier One Capital Ratio (Common Equity Tier one capital divided by risk-weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action.
Securities Available for Sale [Member]
Available-for-Sale Securities [Member]
Stock Repurchase Program Six [Member]
Stock Repurchase Program Six Member.
Stock Repurchase Program Six [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive (Loss) [Member]
Other liabilities - derivatives
Net Amounts of Liabilities presented in the Statement of Financial Position, Offsetting of Derivative Liabilities
Derivative Liability
Unused Commitments On Troubled Debt Restructurings
Unused commitments on TDRs
Unused commitments on troubled debt restructurings.
Weighted average amortization period
Financial Effect of Term Extension Duration
Financial effect of term extension duration.
Loans Held for Investment [Member]
Loans Held for Investment.
Financing Receivable Modifications Term Extension Recorded Investment 2
Financing receivable modifications term extension recorded investment 2.
Amortized Cost Basis
LHFS contractual principal outstanding
Loan, Held-for-Sale or Securitization or Asset-Backed Financing Arrangement, Principal Outstanding
Other Real Estate Secured [Member]
Other Real Estate Secured Financing Receivable [Member]
Class of financing receivables that are not otherwise categorized and are secured by real estate.
Other, net
Disposal Group Including Discontinued Operation Other Income Expense
Disposal group including discontinued operation other income (expense).
Summary of Disposal Groups, Including Discontinued Operations
Disposal Groups, Including Discontinued Operations [Table Text Block]
Tier One Leverage Capital To Average Assets1
Tier One Leverage Capital To Average Assets1
Actual Regulatory Capital Ratio
Mortgage-backed securities
Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Amortized Cost
Minimum [Member]
Minimum [Member]
Other commercial loans and leases financing receivable.
Other Commercial Loans and Leases Financing Receivable [Member]
Other Commercial Loans and Leases [Member]
Financial Instrument
Financial Instrument [Axis]
Gross Amounts of Recognized Assets, Offsetting of Derivative Assets
Fair value of derivative asset
Derivative Asset, Fair Value, Gross Asset, Total
Derivative Asset, Subject to Master Netting Arrangement, before Offset
Term Loans by Origination Year, Before Latest Fiscal Year
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year
Other interest expense
Interest Expense, Other
Pledged to collateralize public deposits and securities sold under repurchase agreements and for other purposes as permitted by law
Pledged Collateralize Deposits And Securities Sold Under Repurchase Agreements
Securities pledged to collateralize agreements The carrying value as of the balance sheet date of securities pledged and securities that an institution sells and agrees to repurchase (the identical or substantially the same securities) as a seller-borrower at a specified date for a specified price, also known as a repurchase agreement, or repo.
Loans Secured by Real Estate [Member]
Real Estate [Member]
Gain on sale of discontinued operations, net
Gain on Sale of Discontinued Operations Net
Gain on sale of discontinued operations, net.
Finance leases:
Finance Lease [Abstract]
Finance lease.
Percentage of outstanding principal to be repurchased under GNMA optional repurchase program
Optional Repurchase Program Principal Percentage May Be Repurchased
The amount of the outstanding principal of a loan may be repurchased under GNMA Optional repurchase Program for loans in a pool that become delinquent.
Other Comprehensive Income (Loss), Tax, Total
Other comprehensive income (loss), tax (expense) benefit
Other Comprehensive Income (Loss), Tax
Securities Sold Under Repurchase Agreements
Securities Sold Under Repurchase Agreements [Text Block]
The entire disclosure for Securities Sold Under Repurchase Agreements.
Accounting Standards Update 2014-09 [Member]
Accounting standards update 2014-09 member
Topic 606 [Member]
Premises and equipment, net
Disposal Group, Including Discontinued Operation, Property, Plant and Equipment
Level 3 [Member]
Fair Value, Inputs, Level 3 [Member]
Other comprehensive income (loss), change in net unrealized holding loss on securities transferred to held to maturity, before tax amount
Other Comprehensive Income Change In Unrealized Holding Gain Loss On Securities Transferred To Held To Maturity Before Tax And Reclassification
Other comprehensive income change in unrealized holding gain (loss) on securities transferred to held to maturity before tax and reclassification.
Proceeds from (Repayments of) Short-term Debt, Maturing in More than Three Months, Total
Net change in short-term borrowings
Proceeds from (Repayments of) Short-Term Debt, Maturing in More than Three Months
Segment Reporting [Abstract]
Revenue From Contract With Customer [Table]
Revenue From Contract With Customer [Table]
Revenue from contract with customer.
Financial Assets and Liabilities Measured at Fair Value Recurring Basis
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Cash Flow Hedge Derivatives [Member]
Funds Transfer Pricing Net
Funds transfer pricing net.
Funds transfer pricing, net
Other Real Estate Excluding Covered Other Real Estate By Type Of Property Table [Text Block]
Tabular disclosure of other real estate properties, excluding covered other real estate, by type of property.
Other Real Estate, By Type of Property
Repurchase and retirement of common stock
Stock Repurchased and Retired During Period, Value
Other Loans [Member]
Other Loans [Member]
Class of financing receivables that are not otherwise categorized and not related to real estate.
Segment Reporting, Other Segment Item, Composition, Description
Other segment items composition description
Sublease income
Sublease Income
Schedule of changes in the reserve for mortgage loan [Abstract]
Schedule Of Changes In The Reserve For Mortgage Loan Servicing Putback Expense [Abstract]
Schedule of changes in the reserve for mortgage loan [Abstract]
Total Capital (to Risk Weighted Assets) [Abstract]
Banking Regulation, Total Capital [Abstract]
Loan Portfolio Held for Investment
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
Interest Expense
Interest Expense, Operating and Nonoperating [Abstract]
Moody's, Aa1 to Aa3 rating.
Moody S Aa1 To Aa3 Rating [Member]
Aa1 to Aa3 [Member]
Credit loss expense, net
Provision Reversal For Loan Lease And Other Losses
Provision (reversal) for loan lease and other losses.
PCL
Period of extension on interest part of loans modified related to COVID-19
Period Of Extension On Interest Part Of Loans Modified Related To C O V I D19
Period of extension on interest part of loans modified related to COVID 19.
Carrying amounts of liabilities included as part of discontinued operations:
Disposal Group, Including Discontinued Operation, Liabilities [Abstract]
Amount of gain (loss) recognized in bank card and other fees
Derivative Instruments Gain Loss Classified Into Bank Card Income Net
The amount of net gain (loss) recognized as noninterest income in bank card and other fees on derivative instruments not designated as hedging instruments.
Service cost
Defined Benefit Plan, Service Cost
Nonfarm Nonresidential Properties and Other Real Estate Secured [Member]
Nonfarm nonresidential properties and other real estate secured.
Reclassification adjustments for changes realized in net income:
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, after Tax [Abstract]
Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture
Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture, Total
Common stock issued-net, long-term incentive plan (in shares)
Operating Lease, Liability, Total
Operating lease liabilities
Operating Lease, Liability
Mortgage Loan Servicing Putback Expenses
Mortgage loan servicing Ppack expenses.
Mortgage loan servicing putback expenses
Collectively Evaluated for Credit Loss
Financing Receivable, Collectively Evaluated for Credit Loss
Forecast [Member]
Forecast [Member]
Forecast
Trustmark Corporation Pension Plan for Certain Employees of Acquired Financial Institutions [Member]
Trustmark Corporation Pension Plan For Certain Employees Of Acquired Financial Institutions [Member]
Trustmark corporation pension plan for certain employees of acquired financial institutions.
Common stock, par value (in dollars per share)
Common Stock, No Par Value
Depreciation, Amortization and Accretion, Net, Total
Depreciation and amortization
Depreciation, Amortization and Accretion, Net
Financing Receivable Impaired [Line Items]
Financing Receivable, Impaired [Line Items]
Continuing Operations [Member]
Secured by Nonfarm, Nonresidential Properties [Member]
Nonresidential Properties Financing Receivables [Member]
Class of financing receivables related to nonfarm, nonresidential properties financing receivables.
Net occupancy - premises
Disposal Group Including Discontinued Operation Net Occupancy Premises
Disposal group including discontinued operation net occupancy premises.
Loss Drivers
Allowance For Credit Loss Macroeconomic Variables
Allowance for credit loss macroeconomic variables.
Lessee, Lease, Description [Table]
Securities Financing Transaction [Line Items]
Securities Financing Transaction [Line Items]
Estimated Fair Value, Less than 12 Months
Estimated Fair Value Less Than12 Months
This item represents the aggregate fair value of investments categorized as available-for-sale and held-to-maturity securities that have been in a continuous unrealized loss position for less than twelve months.
Finance leases
Finance Lease, Weighted Average Discount Rate, Percent
Interest income
Total Interest Income
Interest and Dividend Income, Operating
Forward Contracts [Member]
Forward Contracts [Member]
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year
Financing Receivable, Originated, More than Five Years before Current Fiscal Year
Net Interest Income
Net interest income
Interest Income (Expense), Operating
Stockholders equity.
Stockholders Equity [Line items]
Stockholders Equity [Line Items]
Lease Contractual Term [Domain]
Total LHFI
Loans held for investment (LHFI)
Total LHFI
Financing Receivable, before Allowance for Credit Loss
Securities Available for Sale, Amortized Cost [Abstract]
Debt Securities, Available-for-Sale, Fair Value to Amortized Cost, after Allowance for Credit Loss [Abstract]
LHFI classified as TDRs from credits with interest only payments and credits renewed at a rate that was not commensurate with that of new debt with similar risk
Troubled Debt Restructurings Comprised Of Bankruptcies Payment Concessions Interest Only Payments And Credits Renewed At Rates
Troubled Debt Restructurings Comprised Of Bankruptcies Payment Concessions Interest Only Payments And Credits Renewed At Rates
Securities held to maturity
Securities Held to Maturity, Amortized Cost
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss
Securities held to maturity, net of ACL of $0 (fair value: $1,127,076 - 2026; $1,180,569-2025)
Loans Past Due 90 Days or More Still Accruing
Financing Receivable, 90 Days or More Past Due, Still Accruing
Direct Financing Lease, Net Investment in Lease, before Allowance for Credit Loss
Total net investment
Lots and Development [Member]
Lots And Development [Member]
Lots and Development.
Loss Contingencies [Table]
Loss Contingencies [Table]
Basic shares
Weighted Average Number of Shares Outstanding, Basic, Total
Weighted Average Number of Shares Outstanding, Basic
Commercial and Industrial - Working Capital [Member]
Commercial And Industrial Working Capital [Member]
Commercial and Industrial - Working Capital.
Scenario
Scenario [Axis]
Other Construction [Member]
Other Construction [Member]
Other construction.
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff
Term Loans by Origination Year, Current Period Gross Charge-Offs, Five or More Years Before Latest Fiscal Year
Nonresidential Owner- Occupied [Member]
Nonresidential Owner Occupied [Member]
Nonresidential Owner- Occupied.
Past Due Modifications Related To Loans Held For Investment [Table Text Block]
Aging analysis of loans modified for borrowers experiencing financial difficulties.
Past Due Modifications Related To Loans Held For Investment
Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table]
Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]
Segments
Segments [Axis]
Income from discontinued operations before income taxes
Income from discontinued operations before income taxes
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax
Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets1
Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets1
Minimum Regulatory Capital Required Ratio
PCL, off-balance sheet credit exposures
Off-Balance-Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal)
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]
1 -4 Family Residential Construction [Member]
Family Residential Construction [Member]
Family Residential Construction.
Net (negative) positive ineffectiveness on MSR fair value
Net Positive Or Negative Ineffectiveness On M S R Fair Value
Amount of net positive or negative ineffectiveness from comparing the total hedge cost to the changes in fair value of Mortgage Servicing Rights derivative assets attributable to interest rate changes.
Securities Sold under Agreements to Repurchase, Total
Total securities sold under repurchase agreements
Securities Sold under Agreements to Repurchase
Accumulated other comprehensive income (loss) and other interest expense.
Accumulated Other Comprehensive Income Loss And Other Interest Expense [Member]
Accumulated Other Comprehensive Income (Loss) and Other Interest Expense [Member]
Total Shareholders' Equity
Balance
Balance
Equity, Attributable to Parent
Consumer loans.
Consumer Loans [Member]
Consumer Loans [Member]
Statement of Stockholders' Equity [Abstract]
Securities Held to Maturity, Gross Unrealized (Losses)
Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss
Other Comprehensive Income (Loss) before Reclassifications, Tax, Total
Other comprehensive income (loss), before reclassifications, tax (expense) benefit
Other Comprehensive Income (Loss) before Reclassifications, Tax
Other comprehensive income (loss), before reclassifications, tax (expense) benefit
Other Construction [Member]
Other Construction Loan Pool [Member]
Other Construction Loan Pool.
Capital Unit, Class
Capital Unit, Class [Domain]
Securities Sold under Agreements to Repurchase, Amount Offset Against Collateral, Total
Securities sold under repurchase agreements, secured by securities carrying amount
Security Sold under Agreement to Repurchase, Including Not Subject to Master Netting Arrangement, after Offset and Deduction
Internal Credit Assessment
Internal Credit Assessment [Domain]
Commercial Borrower Gross Charge-offs [Member]
Commercial Borrower Gross Charge-offs [Member]
Commercial borrower gross charge-offs.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Disclosure [Line Items]
Balance at end of period
Total
Balance at beginning of period
Financing Receivable, Allowance for Credit Loss
Less ACL, LHFI
Offsetting Derivative Liabilities
Offsetting Derivative Liabilities [Abstract]
Fair Value
Fair Value Disclosures [Text Block]
Payments to Acquire Held-to-Maturity Securities
Purchases of securities held to maturity
Purchases of securities held to maturity
Mortgage Banking
Transfers and Servicing of Financial Assets [Text Block]
State and Other Political Subdivision Loans [Member]
State And Other Political Subdivision Loans Financing Receivable [Member]
Class of financing receivables related to state and other political subdivision loan financing receivables.
Financial Effect of Term Extension
Financial effect of term extension.
Financial Effect - Term Extension
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Defined Benefit Pension Items [Member]
Other assets
Disposal Group, Including Discontinued Operation, Other Assets
Bank card and other fees
Bank Card And Other Fees
Income earned from bank card and credit card services including late, over limit, and annual fees. This item excludes interest income earned on credit card balances and transactions. Includes interchange fees earned from bank card and credit card transactions. Also includes ATM and other banking fees.
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Type [Domain]
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Type
Capital Leases, Net Investment in Direct Financing Leases [Abstract]
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Expected Credit Losses, Current
Expected credit losses, current.
Expected credit losses, current
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]
Segment Reporting, Other Segment Item, Amount
Other segment expenses
Plan Name
Plan Name [Domain]
Supplemental Retirement Plan [Member]
Other Pension, Postretirement and Supplemental Plans [Member]
Increase (Decrease) in Other Operating Assets
Increase (Decrease) in Other Operating Assets, Total
Net change in other assets
Purchases and originations of loans held for sale
Payment for Origination, Loan, Mortgage, Held-for-Sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Outstanding balances in collateral dependent related to allowance for credit losses
Collateral Dependent Financing Receivable
Financing receivable where repayment is expected to be provided substantially through the sale of the collateral.
Entity
Entity [Domain]
Loan Restructuring Modification
Loan Restructuring Modification [Axis]
Lessee operating lease liability payments due after year four.
Lessee Operating Lease Liability Payments Due After Year Four
Operating leases, Thereafter
Finance Lease, Liability, to be Paid, Year One
Finance leases, 2027
1-4 Family Mortgage Loans [Member]
Family Mortgage Loans [Member]
Family mortgage loans.
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Type
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Type [Axis]
Term Loans by Origination Year, Current Fiscal Year
Financing Receivable, Year One, Originated, Current Fiscal Year
Collateral Held
Collateral Held [Axis]
Sales-type and Direct Financing Leases, Lease Receivable
Leases receivable
Other Real Estate
Other Real Estate [Text Block]
Entire disclosure for other real estate and covered other real estate.
Pension Plan [Member]
Trustmark Capital Accumulation Plan [Member]
Cash and Due from Banks, Total
Cash and due from banks
Cash and Due from Banks
Financing Receivable, Past Due [Table Text Block]
Aging Analysis of Past Due and Nonaccrual LHFI by Loan Type
Net change in member bank stock
Decrease Increase In Member Bank Stock
The increase (decrease) during the reporting period in member bank stock.
Entity Address, City or Town
Entity Address, City or Town
Stock Repurchased During Period, Shares
Repurchase shares of common stock
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff
Term Loans by Origination Year, Current Period Gross Charge-Offs, Four Years Before Latest Fiscal Year
Number of segments in which the business operates
Number of Reportable Segments
Security Exchange Name
Security Exchange Name
Financing receivable, related allowance
Financing Receivable Post Modification Recorded Investment Related Allowance
Amount of allowance for credit losses related to financing receivable that has undergone troubled debt restructuring.
Government National Mortgage Association [Member]
Government National Mortgage Association Certificates and Obligations (GNMA) [Member]
Proceeds from (Payments for) Federal Funds Sold and Securities Purchased under Agreements to Resell, Net, Total
Net change in federal funds sold and securities purchased under reverse repurchase agreements
Proceeds from (Payments for) Federal Funds Sold and Securities Purchased under Agreements to Resell, Net
Interest Expense, Deposits, Total
Interest on deposits
Interest Expense, Deposits
Interest Income from its sales-type and direct financing leases.
Interest Income from its Sales-Type and Direct Financing Leases
Interest Income from its Sales-Type and Direct Financing Leases
Summary of Trustmark's Portfolio Segments, Loan Classes, Loan Pools and the ACL Methodology and Loss Drivers
Summary Of Portfolio Segments Loan Classes Loan Pools And A C L Methodology And Macroeconomic Variables Table [Text Block]
Summary of portfolio Segments loan classes, loan pools and ACL methodology and macroeconomic variables.
Noninterest Expense
Noninterest Expense [Abstract]
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Table Text Block]
Securities Held to Maturity by Credit Rating, as Determined by Moody's
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest
Income Before Income Taxes
Income Before Income Taxes
Collateral Held
Collateral held.
Collateral held, fair value
Savings
Deposits, Savings Deposits
Equipment expense
Disposal Group Including Discontinued Operation Equipment Expense
Disposal group including discontinued operation equipment expense.
Income from discontinued operations
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent
Schedule of Activity in the Mortgage Servicing Rights
Schedule of Servicing Assets at Fair Value [Table Text Block]
Unused commitments to extend credit
Unused Commitments to Extend Credit
Collectively Evaluated for Credit Loss
Financing Receivable, Allowance for Credit Loss, Collectively Evaluated
Interest Expense, Federal Funds Purchased and Securities Sold under Agreements to Repurchase, Total
Interest on federal funds purchased and securities sold under repurchase agreements
Interest Expense, Federal Funds Purchased and Securities Sold under Agreements to Repurchase
Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Schedule of Amount Included in Other Comprehensive Income for Derivative Instruments Designated as Hedges of Cash Flows
Net Change in Prior Service Costs [Member]
Accumulated Defined Benefit Plans Adjustment, Net Prior Service Including Portion Attributable to Noncontrolling Interest [Member]
Pre-Modification Outstanding Recorded Investment
Financing Receivable Modification Payment Delay Recorded Investment
Financing receivable modification payment delay recorded investment.
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]
Stockholders' Equity Note [Abstract]
Deposits:
Deposits [Abstract]
Credit Risk Participation Agreement [Member]
Credit Default Swap [Member]
Financial Asset, Not Past Due [Member]
Financial Asset, Not Past Due [Member]
Current Loans [Member]
Collateral-Dependent Loans
Financing Receivable Collateral Dependent Loans
Financing receivable collateral dependent loans.
Interest expense paid on deposits and borrowings
Interest Paid, Excluding Capitalized Interest, Operating Activity
Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest [Member]
Cash Flow Hedge Derivatives [Member]
Carrying Value [Member]
Measurement Basis [Axis]
Statistical Measurement
Statistical Measurement [Domain]
Total shareholder return, performance measure
T S R Performance Measure
Level of performance goal measured by total shareholder return (TSR) for a share based compensation plan.
Recognized compensation expense
Share-Based Payment Arrangement, Expense
Sales type and direct financing leases, payment to be received, after year four.
Sales-Type and Direct Financing Leases, Payment to be Received, after Year Four
Thereafter
Mortgage servicing rights [Abstract]
Servicing Asset [Abstract]
Document Period End Date
Document Period End Date
Title and Position [Axis]
Fair Value Hierarchy and NAV
Fair Value Hierarchy and NAV [Domain]
Securities Sold Under Repurchase Agreements [Abstract]
Securities Sold under Agreements to Repurchase [Abstract]
This item represents the aggregate fair value of investments in an unrealized loss position which are categorized as available-for-sale and held-to-maturity securities.
Estimated Fair Value, Total
Total Estimated Fair Value
Period of putback response
Period Of Putback Response
The period of time the company is required to provide a response to putback requests.
Tennessee [Member]
TENNESSEE
Statement of Financial Position [Abstract]
Restricted Stock Units (RSUs) [Member]
Cumulative Effect Period Of Adoption Adjustment [Member]
Cumulative Effect, Period of Adoption, Adjustment [Member]
Loss Contingency Nature
Loss Contingency Nature [Axis]
Gross realized (losses)
Debt Securities, Available-for-Sale, Realized Loss
Gross realized losses
Loss Contingency, Nature
Loss Contingency, Nature [Domain]
Interest and fees on fair value option LHFS.
Interest and Fees on Fair Value Option LHFS
Interest and fees on fair value option LHFS
Derivatives:
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract]
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Wealth management
Wealth Management Income
Gross income from services rendered by the trust department acting in any fiduciary capacity. Also include fees and commissions from securities brokerage activities, investment advisory and management services and from sales of annuities (fixed, variable, and other).
Current Period Gross Charge-offs [Member]
Financing Receivables Current Period Gross Charge-offs [Member]
Financing receivables current period gross charge-offs.
Net Change in Components of Accumulated Other Comprehensive Income (Loss) and the Related Tax Effects
Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]
Derivatives not Designated as Hedging Instruments [Member]
Not Designated as Hedging Instrument [Member]
Financial Asset, Period Past Due
Financial Asset, Aging [Domain]
Increase (Decrease) in Deposits, Total
Net change in deposits
Increase (Decrease) in Deposits
Fair Values Derivatives Balance Sheet Location By Derivative Contract Type By Hedging Designation [Table]
Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table]
Total Liabilities
Liabilities
Financial Instruments
Financial Instruments [Domain]
Consumer 1-4 Family - 1st Liens [Member]
Consumer Family First Liens [Member]
Consumer Family First Liens Member
Fair Value and the Contractual Principal Outstanding of the LHFS
Fair Value And Contractual Principal Outstanding Of Loan Held For Sale Table [Text Block]
Tabular disclosure of the fair value and contractual principal outstanding of loans held for sale accounted for under the fair value option.
Due in one year or less
Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, Year One
Sales-Type and Direct Financing Leases, Payment to be Received, Year One
2027
Due in one year or less
Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, Year One
Financing Receivable [Abstract]
Financing Receivable [Abstract]
Financing Receivable [Abstract]
Potential exposure to credit loss in the event of nonperformance
Loss Contingency, Estimate of Possible Loss
Derivative Liability, Statement of Financial Position [Extensible Enumeration]
Expected return on plan assets
Defined Benefit Plan, Expected Return (Loss) on Plan Assets
Lessee, Operating Lease, Liability, to be Paid, Year Two
Operating leases, 2028
Disposal Groups, Including Discontinued Operations [Table]
Carrying Amount of Loans by Credit Quality Indicator
Financing Receivable Credit Quality Indicators [Table Text Block]
Schedule Of Financing Receivable Troubled Debt Restructurings [Table]
Financing Receivable, Modified [Table]
Amortization of right-of-use assets
Finance Lease, Right-of-Use Asset, Amortization
Weighted Average Number of Shares Outstanding, Diluted
Diluted shares
Pledged securities providing additional contingency funding
Pledged Securities Providing Additional Contingency Funding
Pledged securities to the discount window providing additional contingency funding to collateralize agreements.
Entity File Number
Securities Act File Number
Common stock dividends
Payments of Ordinary Dividends, Common Stock
Net unrealized holding gains (losses) arising during the period
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax
Change in fair value:
Servicing Asset at Fair Value, Changes in Fair Value Resulting from Changes in Valuation Inputs or Changes in Assumptions [Abstract]
Other Assets, Total
Other assets
Other Assets
Accounting Standards Update 2023-07 [Member]
Accounting Standards Update 2023-07 [Member]
Effects of Derivative Instruments on Statements of Operations
Derivative Instruments, Gain (Loss) [Table Text Block]
Cover [Abstract]
Finance lease liability payments due after year four.
Finance Lease Liability Payments Due After Year Four
Finance Lease Thereafter
Sales-type and Direct Financing Leases, Lease Receivable, Undiscounted Excess Amount
Unearned income
Capital Units by Class
Capital Units by Class [Axis]
Capital To Risk Weighted Assets1
Capital To Risk Weighted Assets1
Actual Regulatory Capital Ratio
Cumulative Effect, Period of Adoption
Cumulative Effect, Period of Adoption [Axis]
Forfeited (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period
Reserve for mortgage loan servicing putback expenses
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Write-down or Reserve, Amount
Nonaccrual [Member]
Nonaccrual [Member]
Nonaccrual.
Financial Asset, Period Past Due
Financial Asset, Aging [Axis]
Offsetting Assets [Line Items]
Offsetting Assets [Line Items]
Reclassification from accumulated other comprehensive income, current period, tax (expense) benefit
Reclassification from AOCI, Current Period, Tax
Reclassification from AOCI, Current Period, Tax, Total
Reclassification from accumulated other comprehensive income, current period, tax (expense) benefit
Mortgage-backed securities
Debt Securities, Held-to-Maturity, Maturity, without Single Maturity Date, Fair Value
The amount of total gains (losses) for the period included in earnings that are attributable to the change in unrealized gains or losses still held, end of period
Changes In Unrealized Gains Losses Within Level3 Financial Instruments Carried At Fair Value And Still Held
This element represents unrealized gains (losses) included in net income, excluding any impact of amortization of deferred acquisition costs, value of business acquired, deferred sales inducements and deferred front-end loads and changes in future contract benefits, related to financial instruments carried at fair value and classified within Level 3 that the entity still held as of the balance sheet date.
Scenario [Domain]
Scenario
Revenue from contract with customer.
Revenue From Contract With Customer [Line Items]
Revenue From Contract With Customer [Line Items]
Foreclosed residential real estate properties recorded as a result of obtaining physical possession of property
Real Estate Acquired Through Foreclosure
Average discount rate
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Discount Rate
U.S. Treasury Securities [Member]
US Treasury Securities [Member]
Sales-Type and Direct Financing Leases, Payment to be Received, Year Two
2028
Cash Payments Included in Measurement of Lease Liabilities
Schedule Of Cash Payments Included In Measurement Of Lease Liabilities Table [Text Block]
Schedule of cash payments included in measurement of lease liabilities.
Segment Information
Segment Reporting Disclosure [Text Block]
Operating lease right-of-use assets
Disposal Group, Including Discontinued Operation, Operating Lease Right-of-Use Assets
Disposal group, including discontinued operation, operating lease right-of-use assets.
Cash Collateral Received, Gross Amounts Not Offset in the Statement of Financial Position, Offsetting of Derivative Assets
Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash, Offset Against Derivative Asset
Mortgage-Backed Securities [Member]
Collateralized Mortgage-Backed Securities [Member]
Standby Letters of Credit [Member]
Standby Letters of Credit [Member]
Consumer Borrower Gross Charge-offs [Member]
Consumer Borrower Gross Charge-offs [Member]
Consumer borrower gross charge-offs.
Proceeds from maturities, prepayments and calls of securities held to maturity
Proceeds from Maturities, Prepayments and Calls of Held-to-Maturity Securities
Origination of servicing assets
Servicing Asset at Fair Value, Additions
Number of Contracts
Financing Receivable, Modifications, Number of Contracts
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff
Term Loans by Origination Year, Current Period Gross Charge-Offs, Two Years Before Latest Fiscal Year
Servicing Asset, Fair Value, Change in Fair Value, Valuation Input, Statement of Income or Comprehensive Income [Extensible Enumeration]
Tabular disclosure of future minimum lease commitments for operating and finance lease.
Future Minimum Rental Commitments Under Finance and Operating Leases
Schedule Of Future Minimum Rental Payments For Operating And Finance Leases Table [Text Block]
Subordinated Debt, Ending Balance
Subordinated Debt, Beginning Balance
Subordinated Debt, Total
Subordinated Debt
Subordinated notes
Derivative Instruments, Gain (Loss) [Table]
Securities Held to Maturity, Amortized Cost [Abstract]
Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity [Abstract]
Provision For Loan Losses Expensed Included Acquired Loans
Provision for loan losses expensed included acquired loans.
PCL
Provision For Loan Losses Expensed Included Acquired Loans, Total
Services and fees
Disposal Group Including Discontinued Operation Services and Fees
Disposal group including discontinued operation services and fees.
Vesting period
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period
Construction, Land Development and Other Land [Member]
Construction Loans [Member]
Weighted-average discount rate:
Weighted Average Discount Rate [Abstract]
Weighted average discount rate abstract.
Unimproved Land [Member]
Unimproved Land [Member]
Unimproved Land.
Pension and other postretirement benefit plans:
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax [Abstract]
Carrying Value [Member]
Reported Value Measurement [Member]
Insurance [Member]
Insurance Segment [Member]
Insurance [Member]
Insurance.
Other Real Estate by Geographic Location [Line Items]
Other Real Estate By Geographic Location [Line Items]
Other real estate by geographic location line item.
Securities Held to Maturity [Member]
Held-to-Maturity Securities [Member]
Common stock, outstanding (in shares)
Balance (in shares)
Balance (in shares)
Common Stock, Shares, Outstanding
Inventory and Receivables [Member]
Inventory And Receivables [Member]
Inventory and receivables.
Amortization of prior service cost
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)
Document Transition Report
Document Transition Report
Residential Mortgage Pass-Through Securities Issued by FNMA and FHLMC [Member]
Residential Mortgage Pass Through Securities Issued By F N M A And F H L M C [Member]
Securities collateralized by residential real estate mortgage considered as pass-through securities issued by FNMA and FHLMC.
Securities Held to Maturity, Estimated Fair Value
Total
Securities held to maturity, fair value
Debt Securities, Held-to-Maturity, Fair Value
Overdrafts [Member]
Overdrafts [Member]
Overdrafts.
Repurchase and retirement of common stock
Payments for Repurchase of Common Stock
Mortgage Loans On Real Estate Schedule [Table]
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate Schedule [Table]
Statement of Cash Flows [Abstract]
Payments under finance lease obligations
Payments Under Financing Lease Obligations
Payments under financing lease obligations.
Accounting Standards Update 2024-03 [Member]
Accounting standards update 2024-03.
Accounting Standards Update 2024-03 [Member]
Net change in prior service costs
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, after Tax
Operating Activities [Domain]
Accounting Policies Recently Adopted
Accounting Policies Recently Adopted And Pending Accounting Pronouncements Policy [Text Block]
Disclosure of new accounting pronouncements issued that are either adopted or yet to be adopted, including effective date of pronouncement and impact to the financial statements.
Noninterest gain (losses) Mortgage banking, net for changes in fair value of LHFS
Fair Value, Option, Changes in Fair Value, Gain (Loss)
Derivative Asset, Statement of Financial Position [Extensible Enumeration]
Interest Rate Swap [Member]
Interest Rate Swap [Member]
Shareholders' Equity
Equity [Text Block]
Earnings Per Share [Text Block]
EPS
Discontinued Operations and Disposal Groups [Abstract]
Beginning Balance
Ending Balance
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value
Common Equity Tier One Risk Based Capital [Abstract]
Common Equity Tier One Risk Based Capital [Abstract]
Common Equity Tier One Risk Based Capital [Abstract]
Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration]
Net Income
Net income per consolidated statements of income (loss)
Direct Financing Lease, Unguaranteed Residual Asset
Unguaranteed lease residual
Collateral dependent related to allowance for credit losses
Collateral Dependent Financing Receivable Allowance For Credit Losses
Allowance for credit losses on financing receivable where repayment is expected to be provided substantially through the sale of the collateral.
Operating Lease, Cost
Operating lease cost
Schedule of Amortized Cost Basis of Loans on Nonaccrual Status
Schedule Of Amortized Cost Basis Of Loans On Nonaccrual Status Table [Text Block]
Schedule of amortized cost basis of loans on nonaccrual status.
Intangible Assets, Net (Excluding Goodwill), Total
Identifiable intangible assets, net
Intangible Assets, Net (Excluding Goodwill)
Operating cash flows (fixed payments) included in other operating activities, net
Operating Lease, Payments
Noninterest Income Loss Internal allocations
Noninterest income loss internal allocations.
Internal allocations
Derivatives, Fair Value [Line Items]
Derivatives, Fair Value [Line Items]
Cash received from the sale of a business
Proceeds from Divestiture of Businesses
Proceeds from divestiture of consolidated subsidiary net of tax
Assets [Abstract]
Assets
Other [Member]
Mortgage-Backed Securities, Other [Member]
Defined Benefit Plan, Actuarial Gain (Loss), Immediate Recognition as Component in Net Periodic Benefit (Cost) Credit
Recognized net actuarial (gain) loss
Document Fiscal Year Focus
Document Fiscal Year Focus
Impact of Modifications Classified as Troubled Debt Restructurings
Financing Receivable, Modified [Table Text Block]
Estimated Fair Value, 12 Months or More
Estimated Fair Value12 Months Or More
This item represents the aggregate fair value of investments categorized as available-for-sale and held-to-maturity securities that have been in a continuous unrealized loss position for twelve months or longer.
Obligations of State and Political Subdivisions [Member]
Obligations Of State And Political Subdivisions [Member]
Obligations of State and Political Subdivisions.
Summary of Changes in Balances of Accumulated Other Comprehensive Income (Loss)
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Other Assets [Member]
Other Assets [Member]
Investing Activities
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract]
Retirement Benefits [Abstract]
Proceeds from sale of 1-4 family mortgage loans
Proceeds From Sale Of Mortgage Backed Loans
Proceeds from sales of mortgage backed loans.
All Other Consumer [Member]
All Other Consumer [Member]
All Other Consumer.
Securities Available for Sale and Held to Maturity
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]
Securities Held to Maturity by Credit Rating, as Determined by Moody's
Proceeds from sales of other real estate
Proceeds from Sale of Foreclosed Assets
Minimum Regulatory Provision to be Well-Capitalized Ratio
Common Equity Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets
The Common Equity Tier 1 capital ratio (Common Equity Tier 1 capital divided by risk weighted assets) required to be categorized as "well capitalized" under the regulatory framework for prompt corrective action.
Schedule Of Fair Value Off Balance Sheet Risks [Table]
Fair Value, off-Balance-Sheet Risk [Table]
Accounting Standards Update and Change in Accounting Principle [Abstract]
Gain on sale of discontinued operations, net
Gain on disposition of business
Gain (Loss) on Disposition of Business
Common stock issued-net, long-term incentive plan
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture, Total
Other expense
Disposal Group, Including Discontinued Operation, Other Expense
Interest and fees on LHFS and LHFI reclassified as a reduction over twelve months.
Interest and Fees on LHFS and LHFI Reclassified as a Reduction Over Twelve Months
Interest and fees on LHFS and LHFI reclassified as a reduction over twelve months
Net (charge-offs) recoveries
Financing Receivable Allowance For Credit Losses Write Offs Recoveries Net
Financing receivable allowance for credit losses write offs recoveries net.
Securities with Gross Unrealized Losses, Segregated by Length of Impairment
Unrealized Gain (Loss) on Investments [Table Text Block]
Securities Available for Sale
Securities Available For Sale Policy [Text Block]
Securities available for sale.
Other Liabilities, Total
Other liabilities
Other Liabilities
Other Commercial Loans [Member]
Other Commercial Loans Financing Receivable [Member]
Other commercial loans financing receivable.
Fair Value Disclosures [Abstract]
Commitments and Contingencies Disclosure [Abstract]
Other real estate [Line Items]
Other Real Estate [Line Items]
Other real estate line items.
Lessee, Operating Lease, Liability, to be Paid, Year One
Operating leases 2027
Allowance for Credit Losses, ACL [Member]
Allowance For Credit Losses A C L [Member]
Allowance for credit losses.
Liabilities of discontinued operations
Liabilities of discontinued operations
Disposal Group, Including Discontinued Operation, Liabilities
Statements of Cash Flows
Cash Flow, Supplemental Disclosures [Text Block]
Derivative Instrument
Derivative Instrument [Axis]
Noncash transfers from loans to other real estate
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Foreclosure
Other Assets - Derivatives [Member]
Derivative Financial Instruments, Assets [Member]
Interest cost
Defined Benefit Plan, Interest Cost
Share-Based Payment Arrangement [Abstract]
Deposits
Deposit Liabilities Disclosures [Text Block]
Other Real Estate Properties [Member]
Other Real Estate Properties [Member]
Class of property related to other real estate properties.
Gain (Loss) on Sale of Loans and Leases
Gain (Loss) on Sale of Loans and Leases, Total
Gains on sales of loans, net
Derivatives, Policy [Policy Text Block]
Derivatives Designated as Hedging Instruments
Tier 1 Leverage (to Average Assets) [Abstract]
Banking Regulation, Tier 1 Leverage Capital [Abstract]
Schedule Of Compliance With Regulatory Capital Requirements Under Banking Regulations [Table]
Banking Regulation, Regulatory Capital Requirement, Compliance [Table]
Net cash from investing activities
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation
Reclassification of Securities available for sale to securities held to maturity
Reclassification Of Available For Sale To Held To Maturity Securities
This item represents the amount of securities categorized as available-for-sale being transferred to the held-to-maturity securities category.
Net gain on disposition of discontinued operations
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax, Total
Pass [Member]
Pass - RR 1 through RR 6 [Member]
Finance leases
Finance Lease, Weighted Average Remaining Lease Term
Title of 12(b) Security
Title of 12(b) Security
Schedule Of Segment Reporting Information By Segment [Table]
Schedule of Segment Reporting Information, by Segment [Table]
Derivative Financial Instruments
Derivative Instruments and Hedging Activities Disclosure [Text Block]
Mortgage-backed securities
Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, without Single Maturity Date
Term extension balance
Financing Receivable Term Extension Balance Modified Subsequent Default
Financing receivable term extension balance modified subsequent default.
Subsegments [Domain]
Due after one year through five years
Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five
Debt Securities, Available-for-sale, Allowance for Credit Loss, Ending Balance
Debt Securities, Available-for-sale, Allowance for Credit Loss, Beginning Balance
Debt Securities, Available-for-sale, Allowance for Credit Loss, Total
Credit loss recognized
Debt Securities, Available-for-Sale, Allowance for Credit Loss
Securities available-for-sale, allowance for credit Losses (ACL)
Mortgage Loans On Real Estate [Line Items]
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Payments for Software
Payments for Software, Total
Purchases of software
Credit Cards [Member]
Credit Cards [Member]
Credit Cards.
Exposure for commercial accrual loans modified to borrowers experiencing financial difficulties deemed to be reviewed on individual basis..
Exposure for Modified Commercial Accrual Loans Deemed To Be Reviewed On Individual Basis
Amount of gain (loss) reclassified from accumulated other comprehensive income (loss) and recognized in interest and fees on LHFS and LHFI
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion
Derivative instruments, gain (loss) reclassified from accumulated OCI into income, effective portion.
Trustmark's minimum required contribution to the Trustmark Corporation Pension Plan for Certain Employees of Acquired Financial Institutions
Defined Benefit Plan Previous Minimum Employer Contribution
For a defined benefit plan, the previous minimum required employer contribution for the period, prior to government enactment.
Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year
Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year, Total
Operating leases, 2026 (excluding the three months ended March 31, 2026)
Consolidated Entities [Axis]
Finance Lease, Right-of-Use Asset, after Accumulated Amortization, Total
Finance lease right-of-use assets, net of accumulated depreciation
Finance Lease, Right-of-Use Asset, after Accumulated Amortization
Legal Entity
Legal Entity [Axis]
Due after one year through five years
Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five
Long term debt weighted average amortization period.
Long Term Debt Weighted Average Amortization Period
Weighted average amortization period
Due after one year through five years
Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five
Time Deposits, Total
Time
Time Deposits
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table]
Fair Value, Recurring and Nonrecurring [Table]
Capital Surplus [Member]
Additional Paid-in Capital [Member]
Commercial Mortgage-Backed Securities Issued or Guaranteed by FNMA, FHLMC or GNMA [Member]
Commercial Mortgage-Backed Securities [Member]
Noninterest Expense Internal Allocations
Noninterest expense internal allocations.
Internal allocations
Due after five years through ten years
Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10
Measurement Frequency
Measurement Frequency [Domain]
Performance Units [Member]
Performance units.
Income Statement Location
Statement of Income Location, Balance [Axis]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Change in accounting principle, accounting standards update, adoption date
Change in Accounting Principle, Accounting Standards Update, Adoption Date
Trading Symbol
Trading Symbol
Financial Effect Of Payment Delay Description
Financial effect of payment delay description.
Financial Effect - Payment Delay
Due in one year or less
Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One
Director [Member]
Deposits Summary
Deposits Table [Text Block]
Tabular disclosure of the components of deposit liabilities.
Change in Allowance for Loan Losses
Financing Receivable, Allowance for Credit Loss [Table Text Block]
Financing Activities
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract]
Capital Required To Be Well Capitalized To Risk Weighted Assets1
Minimum Regulatory Provision to be Well-Capitalized Ratio
Capital Required To Be Well Capitalized To Risk Weighted Assets1
Recurring Basis [Member]
Fair Value, Recurring [Member]
Net unamortized, unrealized loss on transfer of securities
Accumulated Other Comprehensive Income Loss Transferred Securities Adjustment
Unamortized, unrealized gain (loss) at the end of an accounting period on available for sale securities transferred to held to maturity securities .
Net unamortized, unrealized loss on transfer of securities
Schedule Of Impaired Financing Receivable [Table]
Schedule of Impaired Financing Receivable [Table]
Operating leases, total minimum lease payments
Lessee, Operating Lease, Liability, to be Paid
Stock Repurchase Program Seven [Member]
Stock Repurchase Program Seven [Member]
Stock Repurchase Program Seven [Member]
Nonfarm, Nonresidential Properties [Member]
Nonfarm Nonresidential Properties [Member]
Class of property related to nonfarm nonresidential properties.
Accounting Standards Update 2016-13 [Member]
ASU 2016-13 [Member]
Operating leases, imputed interest
Lessee, Operating Lease, Liability, Undiscounted Excess Amount
Financing Receivable Portfolio Segment
Financing Receivable Portfolio Segment [Domain]
Securities Available for Sale and Transferred Securities [Member]
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Including Noncontrolling Interest [Member]
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Categories of Investments
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Categories of Investments [Domain]
Equity Components [Axis]
Equity Components
Actual Regulatory Capital Ratio
Common Equity Tier One Risk Based Capital To Risk Weighted Assets
Common Equity Tier 1 capital divided by risk weighted assets as defined by regulations.
Mississippi [Member]
MISSISSIPPI
Letters of credit, maturity term - maximum
Letters Of Credit Maximum Maturity
The maximum maturity (in years) of outstanding letters of credit issued by company.
MSR [Member]
Mortgage Servicing Rights [Member]
Mortgage Servicing rights measured at fair value.
Other borrowings
Other Borrowings
Troubled Debt Restructurings [Member]
Troubled Debt Restructurings [Member]
Classes of financing receivables and portfolio segments related to troubled debt restructurings in which a modification was made within the last 12 months and for which there was no payment default in the current reporting period.
Sales type and direct financing leases initial direct costs.
Sales Type and Direct Financing Leases Initial Direct Costs
Initial direct costs
Financing Receivable, Revolving Loans
Financing Receivable, Revolving
Nonoperating Income (Expense), Total
Other, net
Nonoperating Income (Expense)
Equity Component
Equity Component [Domain]
Asset Class
Asset Class [Axis]
Capital Required For Capital Adequacy To Risk Weighted Assets1
Capital Required For Capital Adequacy To Risk Weighted Assets1
Minimum Regulatory Capital Required Ratio
Other expense
Other Noninterest Expense
Other Real Estate, Ending Balance
Other Real Estate, Beginning Balance
Other Real Estate, Total
Other real estate, net
Other Real Estate
Due after five years through ten years
Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10
Equipment and Machinery [Member]
Machinery and Equipment [Member]
Other interest income
Other Interest and Dividend Income
Net LHFI
Net LHFI
Financing Receivable, after Allowance for Credit Loss
Type of Borrower
Type of Borrower [Axis]
Statement of Comprehensive Income [Abstract]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Capital conservation buffer rate
Capital Conservation Buffer Rate
Capital conservation buffer rate.
Maximum [Member]
Maximum [Member]
Derivatives in Hedging Relationships [Member]
Designated as Hedging Instrument [Member]
Statistical Measurement
Statistical Measurement [Axis]
Common Stock, Value, Issued, Ending Balance
Common Stock, Value, Issued, Beginning Balance
Common Stock, Value, Issued, Total
Common Stock, Value, Issued
Authorized: 250,000,000 shares Issued and outstanding: 58,679,730 shares - 2026; 59,012,423 shares - 2025
Financing cash flows included in payments under finance lease obligations
Finance Lease, Principal Payments
Schedule Of Financing Receivable Allowance For Credit Losses [Table]
Financing Receivable, Allowance for Credit Loss [Table]
Number of risk participation agreements
Number Of Risk Participation Agreements
The number of risk participation agreements the entity has entered into.
Operating lease liabilities
Disposal Group Including Discontinued Operation Operating Lease Liability
Disposal group including discontinued operation operating lease liability.
Schedule of Mortgage Loans Sold and Serviced for Others
Schedule Of Mortgage Loans Sold And Serviced For Others Table [Text Block]
Tabular disclosure of mortgage loans sold and serviced for others.
Equipment Finance Loans [Member]
Equipment Finance Loans [Member]
Equipment finance loans.
Financial Instruments, Gross Amounts Not Offset in the Statement of Financial Position, Offsetting of Derivative Assets
Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Security Not Offset
Financial Instruments, Gross Amounts Not Offset in the Statement of Financial Position, Offsetting of Derivative Assets
Commercial and Industrial - Non-Working Capital [Member]
Commercial And Industrial Non Working Capital [Member]
Commercial and Industrial - Non-Working Capital.
Debt Securities, Available-for-Sale, Realized Gain
Gross realized gains
Earnings on bank-owned life insurance
Bank Owned Life Insurance Income
Secured by 1-4 Family Residential Properties [Member]
Residential Financing Receivable [Member]
Class of financing receivables related to residential financing receivables for mortgages.
Residential Financing Receivable [Member]
Schedule of Available For Sale and Held to Maturity Securities [Line Items]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
Weighted-Average Shares Used to Calculate Basic and Diluted EPS
Schedule of Weighted Average Number of Shares [Table Text Block]
Troubled debt restructurings on financial effect
Troubled Debt Restructurings on Financial Effect [Table Text Block]
Troubled debt restructurings on financial effect.
Period of extension on full payment deferrals part of loans modified related to COVID-19
Period Of Extension On Full Payment Deferrals Part Of Loans Modified Related To C O V I D19
Period of extension on full payment deferrals part of loans modified related to COVID 19.
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Exchange Traded Written Options [Member]
Exchange Traded Written Options [Member]
Option traded on a regulated exchange where the terms of each option are standardized by the exchange. The contract is standardized so that underlying asset, quantity, expiration date and strike price are known in advance.
Shares withheld to pay taxes, long-term incentive plan
Payment, Tax Withholding, Share-Based Payment Arrangement
Federal National Mortgage Association [Member]
Federal National Mortgage Association Certificates and Obligations (FNMA) [Member]
Fair value less unpaid principal
Fair Value Less Unpaid Principal Net
This item represents the difference between the aggregate fair value and the unpaid principal.
Credit Rating, Moody's
Credit Rating, Moody's [Axis]
Other Residential Financing Receivable [Member]
Other Secured by 1-4 Family Residential Properties [Member]
Other residential financing receivable.
Other Residential Financing Receivable [Member]
Debt Security Category
Debt Security Category [Axis]
Interest-bearing Deposit Liabilities, Total
Interest-bearing
Interest-Bearing Deposit Liabilities
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Table]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table]
Revenue from Contracts with Customers
Revenue from Contract with Customer [Text Block]
Individually Evaluated for Credit Loss
Financing Receivable, Allowance for Credit Loss, Individually Evaluated
Nonowner-Occupied- Retail [Member]
Non Owner Occupied Retail [Member]
Non-Owner Occupied- Retail.
Entity Registrant Name
Entity Registrant Name
Future Contracts [Member]
Future [Member]
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax
Securities Available for Sale, Gross Unrealized (Losses)
Proceeds from sales of loans held for sale
Proceeds from Sale, Loan, Mortgage, Held-for-Sale
Accumulated Other Comprehensive Income Loss [Table]
Accumulated Other Comprehensive Income (Loss) [Table]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Consolidated Entities [Domain]
Income Tax Expense (Benefit), Total
Income taxes
Income Tax Expense (Benefit)
Income taxes
ACL on off-balance sheet credit exposures
Balance at beginning of period
Balance at end of period
Off-Balance-Sheet, Credit Loss, Liability
Measurement Frequency
Measurement Frequency [Axis]
Common Stock, Dividends, Per Share, Cash Paid
Common stock dividends paid (in dollars per share)
Repurchase shares of common stock, value
Stock Repurchased During Period, Value
Tier One Leverage Capital Required For Capital Adequacy To Average Assets1
Tier One Leverage Capital Required For Capital Adequacy To Average Assets1
Minimum Regulatory Capital Required Ratio
Sales-Type and Direct Financing Leases, Payment to be Received, Remainder of Fiscal Year
2026 (excluding the three months ended March 31, 2026)
Federal Home Loan Mortgage Corporation [Member]
Federal Home Loan Mortgage Corporation Certificates and Obligations (FHLMC) [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
Interest Rate Lock Commitments [Member]
Interest Rate Lock Commitments [Member]
Obligations of States and Political Subdivisions [Member]
US States and Political Subdivisions Debt Securities [Member]
Total fair value, before mortgage-backed securities
Fair Value Of Available For Sale Securities Before Mortgage Back Securities
Fair value of available for sale securities before mortgage back securities.
Sales-Type and Direct Financing Leases, Payment to be Received, Year Three
2029
Accumulated Other Comprehensive Income (Loss), Net of Tax, Total
Accumulated other comprehensive income (loss), net of tax
Accumulated Other Comprehensive Income (Loss), Net of Tax
Loans Secured by Real Estate [Member]
Commercial Real Estate Portfolio Segment [Member]
Construction Land Development And Other Financing Receivable [Member]
Class of financing receivables related to real estate construction, land development and other land operations financing receivables.
Construction, Land Development and Other Land [Member]
Marsh & McLennan Agency LLC (MMA)
Marsh and McLennan Agency LLC [Member]
Marsh and McLennan Agency LLC.
Payments to Acquire Property, Plant, and Equipment, Total
Purchases of premises and equipment
Payments to Acquire Property, Plant, and Equipment
Payment for (Proceeds from) Other Investing Activity
Other, net
Class of Financing Receivable, Type of Borrower [Domain]
Class of Financing Receivable, Type of Borrower
Granted (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period
Tier 1 Leverage (to Average Assets) [Member]
Tier1 Leverage To Average Assets [Member]
The amount of tier 1 leverage capital required as related to average assets regarding requirements for capital adequacy purposes under the regulatory framework for prompt corrective action.
Loans charged-off
Financing Receivable Allowance for Credit Losses Write Offs Net
Financing receivable allowance for credit losses write offs net.
Total Assets
Total assets
Assets
Class of Financing Receivable
Class of Financing Receivable [Domain]
Income Statement [Abstract]
Retirement Plan Name
Retirement Plan Name [Domain]
Operating cash flows included in operating activities
Finance Lease, Interest Payment on Liability
Other Real Estate, Foreclosed Assets, and Repossessed Assets, Total
Total other real estate
Balance at beginning of period
Balance at end of period
Other Real Estate, Foreclosed Assets, and Repossessed Assets
Payments on long-term FHLB advances
Payments for FHLBank Advance, Investing Activities
Deferred Income Tax Expense (Benefit), Total
Deferred income tax provision
Deferred Income Tax Expense (Benefit)
Credit amount used as baseline in evaluating loan policy
Credit Amount Used In Baseline Evaluation
Credit amount used in baseline evaluation.
Gains on sale of mortgage banking
Gain (Loss) on Sales of Loans, Net
Gain (Loss) on Sales of Loans, Net, Total
Stock and Incentive Compensation Plan [Member]
Stock And Incentive Compensation Plan [Member]
Stock and incentive compensation plan.
Total excluded components of earnings recognition
Derivative, Excluded Component, Gain (Loss), Recognized in Earnings
Derivative, Excluded Component, Gain (Loss), Recognized in Earnings, Total
Released from restriction (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period
Other Loans Secured by Real Estate [Member]
Other Loans Secured by Real Estate [Member]
Other Loans Secured By Real Estate [Member]
Other Loans Secured by Real Estate.
Mortgage Servicing Rights Hedge [Member]
Mortgage Servicing Rights Hedge [Member]
Mortgage servicing Rights Hedge
Diluted EPS
Diluted
Earnings Per Share, Diluted
Total Nonaccrual
Nonaccrual
Financing Receivable, Nonaccrual
Schedule of Segment Information
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Off-balance sheet obligations
Fair Value Disclosure, off-Balance-Sheet Risks, Face Amount, Liability
Title and Position [Domain]
Dividends, Common Stock, Total
Dividends, Common Stock
Common stock dividends paid
Mortgage-backed securities
Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Fair Value
Assets of discontinued operations
Assets of discontinued operations
Disposal Group, Including Discontinued Operation, Assets
City Area Code
City Area Code
Total fair value, before mortgage-backed securities
Fair Value Of Held To Maturity Securities Before Mortgage Back Securities
Fair value of held to maturity securities before mortgage back securities.
Other comprehensive income (loss), net of tax amount
Other Comprehensive Income (Loss), Net of Tax
Gross Unrealized (Losses), Total
Total Gross Unrealized Losses
This item represents the excess of amortized cost basis over fair value of securities in a loss position and which are categorized as available-for-sale and held-to-maturity securities.
PCL, LHFI
PCL
Financing Receivable, Credit Loss, Expense (Reversal)
Net Periodic Benefit Cost
Schedule of Defined Benefit Plans Disclosures [Table Text Block]
Total deposits
Deposits
Deposits
Income taxes from discontinued operations
Discontinued Operation, Tax Effect of Discontinued Operation
Exchange Traded Purchased Options [Member]
Exchange Traded Purchased Options [Member]
An option traded on a regulated exchange where the terms of each option are standardized by the exchange. The contract is standardized so that underlying asset, quantity, expiration date and strike price are known in advance. Over-the-counter options are not traded on exchanges and allow for the customization of the terms of the option contract.
Financial Asset, Past Due [Member]
Past Due [Member]
Schedule Of Defined Benefit Plans Disclosures [Table]
Defined Benefit Plan [Table]
Interest Rate Floor [Member]
Interest Rate Floor [Member]
Other Construction Financing Receivable [Member]
Other construction financing receivable.
Other Construction Financing Receivable [Member]
Reclassification adjustment for (gain) loss realized in net income
Reclassification adjustment for (gain) loss realized in net income
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax
Amount of gain (loss) recognized in other comprehensive income (loss), net of tax
Variable lease cost
Variable Lease, Cost
Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust, Total
Junior subordinated debt securities
Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust
Net unrealized holding losses on AFS Securities, net of tax at date of transfer
Other Comprehensive Income Loss Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax At Date Of Transfer
Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities at date of transfer.
Net unrealized holding losses on AFS Securities, net of tax at date of transfer
Fair value of LHFS
Loan, Held-for-Sale, Fair Value Disclosure
Operating Lease, Weighted Average Remaining Lease Term
Operating leases
Real Estate
Real Estate [Domain]
Segment Reporting Information [Line Items]
Segment Reporting Information [Line Items]
Net lease cost
Lease, Cost
Performance Adjustment Factor In Shares
Performance adjustment factor in shares.
Adjustment for performance factor (shares)
Equipment Finance Leases [Member]
Equipment Finance Leases [Member]
Equipment Finance Leases [Member]
Total Capital (to Risk Weighted Assets) [Member]
Capital To Risk Weighted Assets [Member]
Capital to risk weighted assets.
Retirement Plan Name
Retirement Plan Name [Axis]
Fair value of derivative liability
Gross Amounts of Recognized Liabilities, Offsetting of Derivative Liabilities
Derivative Liability, Subject to Master Netting Arrangement, before Offset
Derivative Liability, Fair Value, Gross Liability, Total
Disposal Group, Including Discontinued Operation, Unclassified Balance Sheet Disclosures [Abstract]
Compensation expense, long-term incentive plan
APIC, Share-Based Payment Arrangement, Other, Increase for Cost Recognition
Mortgage banking, net
Mortgage Banking Income
The noninterest income, net of associated expenses, derived from mortgage banking activities (fees and commissions), including fees earned from servicing third-party assets.
Property, Plant and Equipment, Net, Ending Balance
Property, Plant and Equipment, Net, Beginning Balance
Property, Plant and Equipment, Net, Total
Premises and equipment, net
Property, Plant and Equipment, Net
Schedule Of Available For Sale And Held To Maturity Securities [Table]
Schedule Of Available For Sale And Held To Maturity Securities [Table]
Information by available for sale and held to maturity securities.
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations, Total
Cash and cash equivalents at beginning of period
Cash and cash equivalents at end of period
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation
Total amortized cost, before mortgage-backed securities
Amortized Cost Held To Maturity Before Mortgage Backed Securities
Amortized cost held to maturity before mortgage backed securities.
Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets1
Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets1
Minimum Regulatory Provision to be Well-Capitalized Ratio
Stock repurchase program 1.
Stock Repurchase Program One [Member]
Stock Repurchase Program 1 [Member]
Cash and due from banks
Disposal Group, Including Discontinued Operation, Cash
Retained Earnings [Member]
Retained Earnings [Member]
Originations of mortgage servicing rights
Mortgage Servicing Rights Net
Mortgage servicing rights net.
Share-based Payment Arrangement, Noncash Expense, Total
Compensation expense, long-term incentive plan
Share-Based Payment Arrangement, Noncash Expense
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Leases of Lessee, Operating and Finance Leases.
Leases of Lessee, Operating and Finance Leases [Text Block]
Leases
LHFI classified as TDRs
Classified As Troubled Debt Restructuring L H F I
Classified as troubled debt restructuring LHFI.
Operating leases
Operating Lease, Weighted Average Discount Rate, Percent
Level 1 [Member]
Fair Value, Inputs, Level 1 [Member]
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation
Net cash from financing activities
Collateral Held
Collateral Held [Domain]
Net Amount, Offsetting of Derivative Liabilities
Derivative Liability, Including Not Subject to Master Netting Arrangement, after Offset and Deduction
Components of Net Lease Cost
Lease, Cost [Table Text Block]
Change in accounting principle, accounting standards update, adopted [true false]
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]
Term Loans by Origination Year, Three Years Before Latest Fiscal Year
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year
Secured by Nonfarm, Nonresidential Properties [Member]
Secured By Nonfarm Nonresidential Properties [Member]
Secured by nonfarm, nonresidential properties.
Due after five years through ten years
Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10
Financing receivable, related charge-offs
Financing Receivable Post Modification Recorded Investment Related Write Offs
Reduction to the allowance for credit losses related to financing receivables, excluding covered loans, that have undergone troubled debt restructuring and deemed uncollectible.
Nonowner-Occupied - Office [Member]
Nonowner Occupied Office [Member]
Nonowner Occupied Office.
Sales
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales
Amortized Cost and Estimated Fair Value of Available for Sale and Held to Maturity Securities
Marketable Securities [Table Text Block]
Derivative Contract
Derivative Contract [Domain]
Reclassification adjustment for net (gains) losses realized in net income
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
Weighted-Average Antidilutive Stock Awards Excluded from Determining Diluted EPS
Residential Mortgage Pass-Through Securities Guaranteed by GNMA [Member]
Residential Mortgage Pass Through Securities Guaranteed By G N M A [Member]
Securities collateralized by residential real estate mortgage considered as pass-through securities guaranteed by GNMA.
Financing Receivable Modifications [Line Items]
Financing Receivable, Modified [Line Items]
Entity Interactive Data Current
Entity Interactive Data Current
Income Statement Location
Statement of Income Location, Balance [Domain]
Other comprehensive income (loss), change in net unrealized holding loss on securities transferred to held to maturity, net of tax amount
Other Comprehensive Income Loss Securities Transfers To Held To Maturity Net Of Tax
Other comprehensive income loss securities transfers to held to maturity net of tax.
Fair Value Measurement
Fair Value Measurement [Domain]
Operating Activities
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract]
Loan Restructuring Modification
Loan Restructuring Modification [Domain]
Accounting Policies Recently Adopted and Pending Accounting Pronouncements
Accounting Standards Update and Change in Accounting Principle [Text Block]
Accretion (Amortization) of Discounts and Premiums, Investments
Net (accretion) amortization of securities
Real Estate, Type of Property
Real Estate, Type of Property [Axis]
Salaries and employee benefits
Disposal Group Including Discontinued Operation Salaries and Employee Benefits
Disposal group including discontinued operation salaries and employee benefits.
Accrued interest receivable
Loans And Leases Receivable Accrual Of Interest
Loans and leases receivable, accrual of interest.
Actual Regulatory Capital Amount
Banking Regulation, Total Capital, Actual
Cumulative Effect, Period of Adoption
Cumulative Effect, Period of Adoption [Domain]
Entity Tax Identification Number
Entity Tax Identification Number
Equipment expense
Equipment Expense
Repossessed Assets, Total
Consumer mortgage loans and that formal foreclosure proceedings are in process
Repossessed Assets
Methodology
Quantitative Portion Of Allowance For Credit Losses For Loan Pools Estimation Methodology
Quantitative portion of allowance for credit losses for loan pools estimation methodology.
Goodwill
Disposal Group, Including Discontinued Operation, Goodwill
Proceeds from maturities, prepayments and calls of securities available for sale
Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale
Business, Basis of Financial Statement Presentation and Principles of Consolidation
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
Net occupancy - premises
Occupancy, Net
LHFI and ACL, LHFI
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]
Total net (loss) gain included in Mortgage banking, net
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings
Local Phone Number
Local Phone Number
Management [Member]
Financing Receivable, Held-for-Sale, Not Part of Disposal Group, after Valuation Allowance, Ending Balance
Financing Receivable, Held-for-Sale, Not Part of Disposal Group, after Valuation Allowance, Beginning Balance
Loans held for sale
Loans held for sale (LHFS)
Financing Receivable, Held-for-Sale, Not Part of Disposal Group, after Valuation Allowance
Selected Financial Information
Segment Reporting Information, Additional Information [Abstract]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net periodic benefit cost
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)
Short-term lease cost
Short-Term Lease, Cost
Change in net actuarial loss
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax
Finance Lease, Liability, to be Paid, Year Two
Finance leases, 2028
Due to run-off
Servicing Asset at Fair Value, Changes in Fair Value Resulting from Changes in Valuation Inputs
Valuation Adjustment
Valuation adjustment
Amount of positive (negative) valuation adjustment on the fair value of derivative instruments, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition.
Identifiable intangible assets, net
Disposal Group, Including Discontinued Operation, Intangible Assets
Total Noninterest Expense
Noninterest Expense
Noninterest expense
Schedule Of Financing Receivable Recorded Investment Credit Quality Indicator [Table]
Financing Receivable, Credit Quality Indicator [Table]
Accounting Policies [Abstract]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax
Other comprehensive income (loss), before reclassifications, net of tax amount
Other comprehensive income (loss) before reclassification
Securities Available for Sale and Transferred Securities [Member]
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Lessee, Operating Lease, Liability, to be Paid, Year Four
Operating leases, 2030
Trustmark Mortgage [Member]
Trustmark Mortgage [Member]
Trustmark Mortgage.
Salaries and employee benefits
Labor and Related Expense
Labor and Related Expense, Total
Amount of gain (loss) recognized in mortgage banking, net
Derivative Instruments Gain Loss Classified Into Income Net
The amount of net gain (loss) recognized as noninterest income in mortgage banking, net on derivative instruments not designated as hedging instruments.
Consumer LHFI [Member]
Consumer Borrower [Member]
Entity Emerging Growth Company
Entity Emerging Growth Company