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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Contractual interest rate for funds borrowed, under the debt agreement.

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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.

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Gross amount of debt extinguished.

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No definition available.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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No definition available.

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- Definition

The maximum amount of borrowing capacity under a line of credit that is available as of the balance sheet date for a specific purpose other than for financing goods acquired for inventory or imminent delivery to a customer.

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No definition available.

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Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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The effective interest rate at the end of the reporting period.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Amount of cash outflow for cost from early extinguishment and prepayment of debt. Includes, but is not limited to, third-party cost, premium paid, and other fee paid to lender directly for debt extinguishment or debt prepayment. Excludes accrued interest.

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The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

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The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

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Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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Amount of collateralized debt obligations classified as other.

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Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

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Note 9. Debt (Details) - USD ($) $ in Millions	12 Months Ended
Note 9. Debt (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Loss on extinguishment of debt	$ 0.0	$ 1.5	$ 11.7
Payment for Debt Extinguishment or Debt Prepayment Cost			3.3
Write off of Deferred Debt Issuance Cost			$ 8.4
Corporate Segment [Member] \| Senior Notes [Member] \| 4.55% Senior Notes Due October 2024 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.55%
Debt Instrument, Face Amount	$ 400.0
Corporate Segment [Member] \| Senior Notes [Member] \| 7.55% Senior Notes due 2028
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.75%
Payments of Debt Issuance Costs	$ 5.5
Debt Instrument, Face Amount	400.0
Revolving Credit Facility [Member] \| Corporate Segment [Member] \| Line of Credit [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Current Borrowing Capacity	600.0	450.0
Line of Credit Facility, Capacity Available for Specific Purpose Other than for Trade Purchases	100.0
Payments of Debt Issuance Costs	0.7
Proceeds from Lines of Credit	515.0
Repayments of Lines of Credit	740.0
Letters of Credit Outstanding, Amount	17.4
Line of Credit Facility, Remaining Borrowing Capacity	$ 582.6
Debt Instrument, Basis Spread on Variable Rate	1.75%
Debt Instrument, Interest Rate, Effective Percentage	7.17%
Line of Credit Facility, Interest Rate at Period End	0.25%
Revolving Credit Facility [Member] \| Corporate Segment [Member] \| Line of Credit [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Interest Rate at Period End	0.175%
Revolving Credit Facility [Member] \| Corporate Segment [Member] \| Line of Credit [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Interest Rate at Period End	0.40%
Wholly Owned Subsidiaries [Member] \| Railcar Leasing and Management Services Group [Member] \| 2009 Secured Railcar Equipment Notes [Member]
Debt Instrument [Line Items]
Non-Recourse Debt, Gross	$ 99.7	115.8
Wholly Owned Subsidiaries [Member] \| Railcar Leasing and Management Services Group [Member] \| 2010 Secured Railcar Equipment Notes [Member]
Debt Instrument [Line Items]
Non-Recourse Debt, Gross	181.2	204.1
Wholly Owned Subsidiaries [Member] \| Railcar Leasing and Management Services Group [Member] \| Other Equipment Financing
Debt Instrument [Line Items]
Secured Debt, Other	52.3	$ 0.0
Wholly Owned Subsidiaries [Member] \| Railcar Leasing and Management Services Group [Member] \| Line of Credit [Member] \| TRL-2023 Term Loan
Debt Instrument [Line Items]
Payments of Debt Issuance Costs	2.2
Proceeds from Lines of Credit	$ 340.0
Debt Instrument, Basis Spread on Variable Rate	1.80%
Debt Instrument, Interest Rate, Effective Percentage	7.23%
Proceeds from Issuance of Debt	$ 300.1
Wholly Owned Subsidiaries [Member] \| Railcar Leasing and Management Services Group [Member] \| Secured Debt [Member] \| 2009 Secured Railcar Equipment Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.66%
Debt Instrument, Face Amount	$ 238.3
Wholly Owned Subsidiaries [Member] \| Railcar Leasing and Management Services Group [Member] \| Secured Debt [Member] \| 2010 Secured Railcar Equipment Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.19%
Debt Instrument, Face Amount	$ 369.2
Wholly Owned Subsidiaries [Member] \| Railcar Leasing and Management Services Group [Member] \| Secured Debt [Member] \| 2018 Secured Railcar Equipment Notes [Domain]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	482.5
Wholly Owned Subsidiaries [Member] \| Railcar Leasing and Management Services Group [Member] \| Secured Debt [Member] \| 2018 Class A-1 Secured Railcar Equipment Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage				3.82%
Debt Instrument, Face Amount	$ 200.0
Extinguishment of Debt, Amount				$ 153.1
Wholly Owned Subsidiaries [Member] \| Railcar Leasing and Management Services Group [Member] \| Secured Debt [Member] \| 2018 Class A-2 Secured Railcar Equipment Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.62%
Debt Instrument, Face Amount	$ 282.5
Non-Recourse Debt, Gross	$ 282.5
Wholly Owned Subsidiaries [Member] \| Railcar Leasing and Management Services Group [Member] \| Secured Debt [Member] \| 2018 Class A 2020-1 Secured Railcar Equipment Notes [Domain]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	1.96%
Debt Instrument, Face Amount	$ 155.5
Non-Recourse Debt, Gross	$ 95.6
Wholly Owned Subsidiaries [Member] \| Railcar Leasing and Management Services Group [Member] \| Secured Debt [Member] \| 2019 Secured Railcar Equipment Notes [Domain]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.82%
Debt Instrument, Face Amount	$ 528.3
Non-Recourse Debt, Gross	425.3
Wholly Owned Subsidiaries [Member] \| Railcar Leasing and Management Services Group [Member] \| Secured Debt [Member] \| Trinity Rail Leasing 2019 [Domain]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 386.5
Wholly Owned Subsidiaries [Member] \| Railcar Leasing and Management Services Group [Member] \| Secured Debt [Member] \| 2019 Secured Railcar Equipment Notes Class A1 Notes [Domain]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.39%
Debt Instrument, Face Amount	$ 106.9
Non-Recourse Debt, Gross	$ 43.7
Wholly Owned Subsidiaries [Member] \| Railcar Leasing and Management Services Group [Member] \| Secured Debt [Member] \| 2019 Secured Railcar Equipment Notes Class A2 Notes [Domain]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.10%
Debt Instrument, Face Amount	$ 279.6
Non-Recourse Debt, Gross	$ 279.6
Wholly Owned Subsidiaries [Member] \| Railcar Leasing and Management Services Group [Member] \| Secured Debt [Member] \| 2020 Secured Railcar Equipment Notes Class A1 Notes [Domain]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	1.83%
Debt Instrument, Face Amount	$ 110.0
Non-Recourse Debt, Gross	$ 50.5
Wholly Owned Subsidiaries [Member] \| Railcar Leasing and Management Services Group [Member] \| Secured Debt [Member] \| 2020 Secured Railcar Equipment Notes Class A2 Notes [Domain]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.56%
Debt Instrument, Face Amount	$ 240.3
Non-Recourse Debt, Gross	$ 240.3
Wholly Owned Subsidiaries [Member] \| Railcar Leasing and Management Services Group [Member] \| Secured Debt [Member] \| 2020 Secured Railcar Equipment Notes Class B Notes [Domain]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.69%
Debt Instrument, Face Amount	$ 20.5
Non-Recourse Debt, Gross	$ 20.5
Wholly Owned Subsidiaries [Member] \| Railcar Leasing and Management Services Group [Member] \| Secured Debt [Member] \| TRL-2021 Series 2021-1 Class A Green Secured Railcar Equipment Notes
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.26%
Debt Instrument, Face Amount	$ 305.2
Non-Recourse Debt, Gross	$ 275.5
Wholly Owned Subsidiaries [Member] \| Railcar Leasing and Management Services Group [Member] \| Secured Debt [Member] \| TRL-2021 Series 2021-1 Class B Green Secured Railcar Equipment Notes
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.08%
Debt Instrument, Face Amount	$ 19.8
Non-Recourse Debt, Gross	$ 19.8
Wholly Owned Subsidiaries [Member] \| Railcar Leasing and Management Services Group [Member] \| Secured Debt [Member] \| TRL-2022 Series 2022-1 Class A Green Secured Railcar Equipment Notes
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.55%
Debt Instrument, Face Amount	$ 244.8
Non-Recourse Debt, Gross	$ 232.7
Wholly Owned Subsidiaries [Member] \| Railcar Leasing and Management Services Group [Member] \| Promissory Notes [Member] \| 2017 Secured Railcar Equipment Notes [Domain]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.50%
Debt Instrument, Interest Rate, Effective Percentage	6.98%
Debt Instrument, Face Amount				$ 225.0	$ 663.0	$ 302.4
Non-Recourse Debt, Gross	$ 677.2
TILC [Member] \| Revolving Credit Facility [Member] \| Railcar Leasing and Management Services Group [Member] \| Line of Credit [Member] \| TILC Warehouse Facility [Member]
Debt Instrument [Line Items]
Proceeds from Lines of Credit	354.1
Repayments of Lines of Credit	546.6
Line of Credit Facility, Remaining Borrowing Capacity	470.7
Line of Credit Facility, Maximum Borrowing Capacity	$ 218.0
Debt Instrument, Basis Spread on Variable Rate	1.85%
Debt Instrument, Interest Rate, Effective Percentage	7.31%
Debt Instrument, Face Amount	$ 1,000.0
TRIP Holdings \| Railcar Leasing and Management Services Group [Member] \| Secured Debt [Member] \| Triumph Rail Class A Secured Railcar Equipment Notes
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.15%
Debt Instrument, Face Amount	$ 535.0
Non-Recourse Debt, Gross	$ 476.4
TRIP Holdings \| Railcar Leasing and Management Services Group [Member] \| Secured Debt [Member] \| Triumph Rail Class B Secured Railcar Equipment Notes
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.08%
Debt Instrument, Face Amount	$ 25.4
Non-Recourse Debt, Gross	$ 25.4
TRIP Holdings \| Railcar Leasing and Management Services Group [Member] \| Secured Debt [Member] \| Tribute Rail Class A Secured Railcar Equipment Notes
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.76%
Debt Instrument, Face Amount	$ 290.0
Non-Recourse Debt, Gross	$ 274.0
TRIP Holdings \| Railcar Leasing and Management Services Group [Member] \| Secured Debt [Member] \| Tribute Rail Class B Secured Railcar Equipment Notes
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.75%
Debt Instrument, Face Amount	$ 37.0
Non-Recourse Debt, Gross	$ 37.0
RIV 2013 Holdings \| Railcar Leasing and Management Services Group [Member] \| Secured Debt [Member] \| TRP-2021 Class A Secured Railcar Equipment Notes
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.07%
Debt Instrument, Face Amount	$ 334.0
Non-Recourse Debt, Gross	$ 314.1
RIV 2013 Holdings \| Railcar Leasing and Management Services Group [Member] \| Secured Debt [Member] \| TRP 2021 Class B Secured Railcar Equipment Notes
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.06%
Debt Instrument, Face Amount	$ 21.0
Non-Recourse Debt, Gross	$ 21.0