| Line | Roll Up Total Concept | Roll Up Items Concept | Count |
|---|---|---|---|
| 1 | us-gaap:DeferredFederalIncomeTaxExpenseBenefit | trn:EffectoftaxcutsandjobsactDeferredFederalIncomeTaxExpenseBenefit | 1 |
| 2 | us-gaap:DeferredFederalIncomeTaxExpenseBenefit | trn:OtherDeferredFederalIncomeTaxExpenseBenefit | 1 |
(Note that this is a work in progress!)