LHFI and ACL, LHFI - Summary of Trustmark's Portfolio Segments, Loan Classes, Loan Pools and the ACL Methodology and Loss Drivers (Details)
|
6 Months Ended |
12 Months Ended |
Jun. 30, 2025 |
Dec. 31, 2024 |
| Loans Secured by Real Estate [Member] | Construction, Land Development and Other Land [Member] | 1 -4 Family Residential Construction [Member] |
|
|
|
| Financing Receivable Recorded Investment [Line Items] |
|
|
|
| Methodology |
DCF
|
DCF
|
|
| Loss Drivers |
BBB 7-10 US CBI (1), National Unemployment
|
BBB 7-10 US CBI (1), National Unemployment
|
[1] |
| Loans Secured by Real Estate [Member] | Construction, Land Development and Other Land [Member] | Lots and Development [Member] |
|
|
|
| Financing Receivable Recorded Investment [Line Items] |
|
|
|
| Methodology |
DCF
|
DCF
|
|
| Loss Drivers |
National HPI, National Unemployment
|
National HPI, National Unemployment
|
|
| Loans Secured by Real Estate [Member] | Construction, Land Development and Other Land [Member] | Unimproved Land [Member] |
|
|
|
| Financing Receivable Recorded Investment [Line Items] |
|
|
|
| Methodology |
DCF
|
DCF
|
|
| Loss Drivers |
National HPI, National Unemployment
|
National HPI, National Unemployment
|
|
| Loans Secured by Real Estate [Member] | Construction, Land Development and Other Land [Member] | All Other Consumer [Member] |
|
|
|
| Financing Receivable Recorded Investment [Line Items] |
|
|
|
| Methodology |
DCF
|
DCF
|
|
| Loss Drivers |
National HPI, National Unemployment
|
National HPI, National Unemployment
|
|
| Loans Secured by Real Estate [Member] | Other Secured by 1-4 Family Residential Properties [Member] | All Other Consumer [Member] |
|
|
|
| Financing Receivable Recorded Investment [Line Items] |
|
|
|
| Methodology |
DCF
|
DCF
|
|
| Loss Drivers |
National HPI, National Unemployment
|
National HPI, National Unemployment
|
|
| Loans Secured by Real Estate [Member] | Other Secured by 1-4 Family Residential Properties [Member] | Consumer 1-4 Family - 1st Liens [Member] |
|
|
|
| Financing Receivable Recorded Investment [Line Items] |
|
|
|
| Methodology |
DCF
|
DCF
|
|
| Loss Drivers |
National HPI, Southern Unemployment
|
National HPI, Southern Unemployment
|
[2] |
| Loans Secured by Real Estate [Member] | Other Secured by 1-4 Family Residential Properties [Member] | Nonresidential Owner- Occupied [Member] |
|
|
|
| Financing Receivable Recorded Investment [Line Items] |
|
|
|
| Methodology |
DCF
|
DCF
|
|
| Loss Drivers |
Southern Unemployment, National CRE Price Index
|
Southern Unemployment, National CRE Price Index
|
|
| Loans Secured by Real Estate [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Nonresidential Owner- Occupied [Member] |
|
|
|
| Financing Receivable Recorded Investment [Line Items] |
|
|
|
| Methodology |
DCF
|
DCF
|
|
| Loss Drivers |
Southern Unemployment, National CRE Price Index
|
Southern Unemployment, National CRE Price Index
|
|
| Loans Secured by Real Estate [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Nonowner-Occupied - Hotel/Motel [Member] |
|
|
|
| Financing Receivable Recorded Investment [Line Items] |
|
|
|
| Methodology |
DCF
|
DCF
|
|
| Loss Drivers |
National CRE Price Index, Southern Unemployment
|
National CRE Price Index, Southern Unemployment
|
|
| Loans Secured by Real Estate [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Nonowner-Occupied - Office [Member] |
|
|
|
| Financing Receivable Recorded Investment [Line Items] |
|
|
|
| Methodology |
DCF
|
DCF
|
|
| Loss Drivers |
National CRE Price Index, Southern Unemployment
|
National CRE Price Index, Southern Unemployment
|
|
| Loans Secured by Real Estate [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Nonowner-Occupied- Retail [Member] |
|
|
|
| Financing Receivable Recorded Investment [Line Items] |
|
|
|
| Methodology |
DCF
|
DCF
|
|
| Loss Drivers |
National CRE Price Index, Southern Unemployment
|
National CRE Price Index, Southern Unemployment
|
|
| Loans Secured by Real Estate [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Nonowner-Occupied- Senior Living/ Nursing Homes [Member] |
|
|
|
| Financing Receivable Recorded Investment [Line Items] |
|
|
|
| Methodology |
DCF
|
DCF
|
|
| Loss Drivers |
National CRE Price Index, Southern Unemployment
|
National CRE Price Index, Southern Unemployment
|
|
| Loans Secured by Real Estate [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Nonowner-occupied - All Other [Member] |
|
|
|
| Financing Receivable Recorded Investment [Line Items] |
|
|
|
| Methodology |
DCF
|
DCF
|
|
| Loss Drivers |
National CRE Price Index, Southern Unemployment
|
National CRE Price Index, Southern Unemployment
|
|
| Loans Secured by Real Estate [Member] | Other Real Estate Secured [Member] | Nonresidential Owner- Occupied [Member] |
|
|
|
| Financing Receivable Recorded Investment [Line Items] |
|
|
|
| Methodology |
DCF
|
DCF
|
|
| Loss Drivers |
Southern Unemployment, National CRE Price Index
|
Southern Unemployment, National CRE Price Index
|
|
| Loans Secured by Real Estate [Member] | Other Real Estate Secured [Member] | Nonowner-occupied - All Other [Member] |
|
|
|
| Financing Receivable Recorded Investment [Line Items] |
|
|
|
| Methodology |
DCF
|
DCF
|
|
| Loss Drivers |
National CRE Price Index, Southern Unemployment
|
National CRE Price Index, Southern Unemployment
|
|
| Loans Secured by Real Estate [Member] | Other Real Estate Secured [Member] | Nonresidential Nonowner- Occupied - Apartments [Member] |
|
|
|
| Financing Receivable Recorded Investment [Line Items] |
|
|
|
| Methodology |
DCF
|
DCF
|
|
| Loss Drivers |
National CRE Price Index, Southern Unemployment
|
National CRE Price Index, Southern Unemployment
|
|
| Commercial and Industrial Loans [Member] | Commercial and Industrial Loans [Member] | Commercial and Industrial - Non-Working Capital [Member] |
|
|
|
| Financing Receivable Recorded Investment [Line Items] |
|
|
|
| Methodology |
DCF
|
DCF
|
|
| Loss Drivers |
Trustmark historical data
|
Trustmark historical data
|
|
| Commercial and Industrial Loans [Member] | Commercial and Industrial Loans [Member] | Commercial and Industrial - Working Capital [Member] |
|
|
|
| Financing Receivable Recorded Investment [Line Items] |
|
|
|
| Methodology |
DCF
|
DCF
|
|
| Loss Drivers |
Trustmark historical data
|
Trustmark historical data
|
|
| Commercial and Industrial Loans [Member] | Commercial and Industrial Loans [Member] | Equipment Finance Loans [Member] |
|
|
|
| Financing Receivable Recorded Investment [Line Items] |
|
|
|
| Methodology |
WARM
|
WARM
|
|
| Loss Drivers |
Southern Unemployment, National GDP
|
Southern Unemployment, National GDP
|
|
| Commercial and Industrial Loans [Member] | Commercial and Industrial Loans [Member] | Credit Cards [Member] |
|
|
|
| Financing Receivable Recorded Investment [Line Items] |
|
|
|
| Methodology |
WARM
|
WARM
|
|
| Loss Drivers |
Trustmark call report data
|
Trustmark call report data
|
|
| Other Loans Secured by Real Estate [Member] | Other Construction [Member] | Other Construction [Member] |
|
|
|
| Financing Receivable Recorded Investment [Line Items] |
|
|
|
| Methodology |
DCF
|
DCF
|
|
| Loss Drivers |
National CRE Price Index, National Unemployment, BBB 7-10 US CBI
|
National CRE Price Index, National Unemployment, BBB 7-10 US CBI
|
|
| Other Loans Secured by Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | Trustmark Mortgage [Member] |
|
|
|
| Financing Receivable Recorded Investment [Line Items] |
|
|
|
| Methodology |
WARM
|
WARM
|
|
| Loss Drivers |
Southern Unemployment
|
Southern Unemployment
|
|
| Consumer Loans [Member] | Consumer Loans [Member] | All Other Consumer [Member] |
|
|
|
| Financing Receivable Recorded Investment [Line Items] |
|
|
|
| Methodology |
DCF
|
DCF
|
|
| Loss Drivers |
National HPI, National Unemployment
|
National HPI, National Unemployment
|
|
| Consumer Loans [Member] | Consumer Loans [Member] | Credit Cards [Member] |
|
|
|
| Financing Receivable Recorded Investment [Line Items] |
|
|
|
| Methodology |
WARM
|
WARM
|
|
| Loss Drivers |
Trustmark call report data
|
Trustmark call report data
|
|
| Consumer Loans [Member] | Consumer Loans [Member] | Overdrafts [Member] |
|
|
|
| Financing Receivable Recorded Investment [Line Items] |
|
|
|
| Methodology |
Loss Rate
|
Loss Rate
|
|
| Loss Drivers |
Trustmark historical data
|
Trustmark historical data
|
|
| State and Other Political Subdivision Loans [Member] | State and Other Political Subdivision Loans [Member] | Obligations of State and Political Subdivisions [Member] |
|
|
|
| Financing Receivable Recorded Investment [Line Items] |
|
|
|
| Methodology |
DCF
|
DCF
|
|
| Loss Drivers |
Moody's Bond Default Study
|
Moody's Bond Default Study
|
|
| Other Commercial Loans and Leases [Member] | Other Commercial Loans And Leases [Member] | Commercial and Industrial - Non-Working Capital [Member] |
|
|
|
| Financing Receivable Recorded Investment [Line Items] |
|
|
|
| Methodology |
DCF
|
DCF
|
|
| Loss Drivers |
Trustmark historical data
|
Trustmark historical data
|
|
| Other Commercial Loans and Leases [Member] | Other Commercial Loans And Leases [Member] | Commercial and Industrial - Working Capital [Member] |
|
|
|
| Financing Receivable Recorded Investment [Line Items] |
|
|
|
| Methodology |
DCF
|
DCF
|
|
| Loss Drivers |
Trustmark historical data
|
Trustmark historical data
|
|
| Other Commercial Loans and Leases [Member] | Other Commercial Loans And Leases [Member] | Equipment Finance Leases [Member] |
|
|
|
| Financing Receivable Recorded Investment [Line Items] |
|
|
|
| Methodology |
WARM
|
WARM
|
|
| Loss Drivers |
Southern Unemployment, National GDP
|
Southern Unemployment, National GDP
|
|
| Other Commercial Loans and Leases [Member] | Other Commercial Loans And Leases [Member] | Other Loans [Member] |
|
|
|
| Financing Receivable Recorded Investment [Line Items] |
|
|
|
| Methodology |
DCF
|
DCF
|
|
| Loss Drivers |
BBB 7-10 US CBI, Southern Unemployment
|
BBB 7-10 US CBI, Southern Unemployment
|
|
|
|