75000 - Document - Cover Page
link:presentationLink
link:calculationLink
link:definitionLink
75010 - Statement - Condensed Consolidated Balance Sheets
link:presentationLink
link:calculationLink
link:definitionLink
75020 - Statement - Condensed Consolidated Balance Sheets (Parenthetical)
link:presentationLink
link:calculationLink
link:definitionLink
75030 - Statement - Condensed Consolidated Statements of Income
link:presentationLink
link:calculationLink
link:definitionLink
75040 - Statement - Condensed Consolidated Statements of Comprehensive Income
link:presentationLink
link:calculationLink
link:definitionLink
75050 - Statement - Condensed Consolidated Statements of Comprehensive Income (Parenthetical)
link:presentationLink
link:calculationLink
link:definitionLink
75060 - Statement - Condensed Consolidated Statements of Equity
link:presentationLink
link:calculationLink
link:definitionLink
75070 - Statement - Condensed Consolidated Statements of Equity (Parenthetical)
link:presentationLink
link:calculationLink
link:definitionLink
75080 - Statement - Condensed Consolidated Statements of Cash Flows
link:presentationLink
link:calculationLink
link:definitionLink
995455 - Disclosure - Interim Financial Statements
link:presentationLink
link:calculationLink
link:definitionLink
995465 - Disclosure - Revenue Recognition
link:presentationLink
link:calculationLink
link:definitionLink
995475 - Disclosure - Inventories
link:presentationLink
link:calculationLink
link:definitionLink
995485 - Disclosure - Intangibles and Other Assets, net
link:presentationLink
link:calculationLink
link:definitionLink
995495 - Disclosure - Goodwill
link:presentationLink
link:calculationLink
link:definitionLink
995505 - Disclosure - Accounts Payable and Accrued Liabilities
link:presentationLink
link:calculationLink
link:definitionLink
995515 - Disclosure - Accrued Warranty
link:presentationLink
link:calculationLink
link:definitionLink
995525 - Disclosure - Debt, net
link:presentationLink
link:calculationLink
link:definitionLink
995535 - Disclosure - Accumulated Other Comprehensive Loss
link:presentationLink
link:calculationLink
link:definitionLink
995545 - Disclosure - Earnings Per Share
link:presentationLink
link:calculationLink
link:definitionLink
995555 - Disclosure - Derivative Instruments
link:presentationLink
link:calculationLink
link:definitionLink
995565 - Disclosure - Segment Information
link:presentationLink
link:calculationLink
link:definitionLink
995575 - Disclosure - Leases
link:presentationLink
link:calculationLink
link:definitionLink
995585 - Disclosure - Commitments and Contingencies
link:presentationLink
link:calculationLink
link:definitionLink
995595 - Disclosure - Fair Value Measures
link:presentationLink
link:calculationLink
link:definitionLink
995605 - Disclosure - Related Party Transactions
link:presentationLink
link:calculationLink
link:definitionLink
995615 - Disclosure - Interim Financial Statements (Policies)
link:presentationLink
link:calculationLink
link:definitionLink
995625 - Disclosure - Revenue Recognition (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995635 - Disclosure - Inventories (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995645 - Disclosure - Intangibles and Other Assets, net (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995655 - Disclosure - Goodwill (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995665 - Disclosure - Accounts Payable and Accrued Liabilities (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995675 - Disclosure - Accrued Warranty (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995685 - Disclosure - Debt, net (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995695 - Disclosure - Accumulated Other Comprehensive Loss (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995705 - Disclosure - Earnings Per Share (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995715 - Disclosure - Derivative Instruments (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995725 - Disclosure - Segment Information (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995735 - Disclosure - Leases (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995745 - Disclosure - Fair Value Measures (Tables)
link:presentationLink
link:calculationLink
link:definitionLink
995755 - Disclosure - Interim Financial Statements - Additional Information (Detail)
link:presentationLink
link:calculationLink
link:definitionLink
995765 - Disclosure - Revenue Recognition - Summary of Revenue Disaggregated by Categories (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995775 - Disclosure - Revenue Recognition - Summary of Contract Balances (Detail)
link:presentationLink
link:calculationLink
link:definitionLink
995785 - Disclosure - Revenue Recognition - Additional information (Detail)
link:presentationLink
link:calculationLink
link:definitionLink
995795 - Disclosure - Revenue Recognition - Additional information (Detail1)
link:presentationLink
link:calculationLink
link:definitionLink
995795 - Disclosure - Revenue Recognition - Additional information (Detail1) [Default]
link:presentationLink
link:calculationLink
link:definitionLink
995805 - Disclosure - Revenue Recognition - Summary of Estimated Revenue Related to Performance Obligations (Detail)
link:presentationLink
link:calculationLink
link:definitionLink
995815 - Disclosure - Inventories - Components of Inventories (Detail)
link:presentationLink
link:calculationLink
link:definitionLink
995825 - Disclosure - Intangibles and Other Assets, Net - Identifiable Intangibles and Other Assets, Net (Detail)
link:presentationLink
link:calculationLink
link:definitionLink
995835 - Disclosure - Intangibles and Other Assets, Net - Additional Information (Detail)
link:presentationLink
link:calculationLink
link:definitionLink
995845 - Disclosure - Goodwill - Additional Information (Detail)
link:presentationLink
link:calculationLink
link:definitionLink
995855 - Disclosure - Goodwill - Schedule of Goodwill (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995865 - Disclosure - Accounts Payable and Accrued Liabilities - Accounts Payable and Accrued Liabilities (Detail)
link:presentationLink
link:calculationLink
link:definitionLink
995875 - Disclosure - Accrued Warranty - Warranty Accrual Activity (Detail)
link:presentationLink
link:calculationLink
link:definitionLink
995885 - Disclosure - Debt, Net - Summary of Debt (Detail)
link:presentationLink
link:calculationLink
link:definitionLink
995895 - Disclosure - Debt, Net - Summary of Debt (Parenthetical) (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995905 - Disclosure - Debt, Net - Additional Information (Detail)
link:presentationLink
link:calculationLink
link:definitionLink
995915 - Disclosure - Debt, Net - Summary of Net Carrying Amount of Debt and Related Assets (Details)
link:presentationLink
link:calculationLink
link:definitionLink
995925 - Disclosure - Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss (AOCL), Net of Tax (Detail)
link:presentationLink
link:calculationLink
link:definitionLink
995935 - Disclosure - Earnings Per Share - Reconciliation of Shares Used in Computation of Basic and Diluted Earnings Per Common Share (Detail)
link:presentationLink
link:calculationLink
link:definitionLink
995945 - Disclosure - Earnings Per Share - Reconciliation of Shares Used in Computation of Basic and Diluted Earnings Per Common Share (Parenthetical) (Detail)
link:presentationLink
link:calculationLink
link:definitionLink
995955 - Disclosure - Earnings Per Share - Additional Information (Detail)
link:presentationLink
link:calculationLink
link:definitionLink
995965 - Disclosure - Earnings Per Share - Approach to Calculate Diluted Earnings Per Share (Detail)
link:presentationLink
link:calculationLink
link:definitionLink
995975 - Disclosure - Derivative Instruments - Additional Information (Detail)
link:presentationLink
link:calculationLink
link:definitionLink
995985 - Disclosure - Derivative Instruments - Fair Values of Derivative Instruments (Detail)
link:presentationLink
link:calculationLink
link:definitionLink
995995 - Disclosure - Derivative Instruments - Effect of Derivative Instruments on Statements of Income (Detail)
link:presentationLink
link:calculationLink
link:definitionLink
996005 - Disclosure - Derivative Instruments - Effects of Cash Flow Hedges Included in Statements of Income (Detail)
link:presentationLink
link:calculationLink
link:definitionLink
996015 - Disclosure - Segment Information - Additional Information (Detail)
link:presentationLink
link:calculationLink
link:definitionLink
996025 - Disclosure - Segment Information - Segments Internal Financial Reports (Detail)
link:presentationLink
link:calculationLink
link:definitionLink
996035 - Disclosure - Segment Information - Reconciliation of Earnings from Operations to Earnings Before Income Tax and Earnings from Unconsolidated Affiliates (Detail)
link:presentationLink
link:calculationLink
link:definitionLink
996045 - Disclosure - Leases - Additional Information (Detail)
link:presentationLink
link:calculationLink
link:definitionLink
996055 - Disclosure - Leases - Aggregate Minimum Future Amounts Receivable Under All Non-Cancelable Operating Leases and Subleases (Detail)
link:presentationLink
link:calculationLink
link:definitionLink
996065 - Disclosure - Leases - Components of Operating Lease Costs (Detail)
link:presentationLink
link:calculationLink
link:definitionLink
996075 - Disclosure - Leases - Aggregate Minimum Future Amounts Payable Under Operating Leases (Detail)
link:presentationLink
link:calculationLink
link:definitionLink
996085 - Disclosure - Leases - Aggregate Minimum Future Amounts Payable Under Operating Leases (Detail)2
link:presentationLink
link:calculationLink
link:definitionLink
996095 - Disclosure - Leases - Additional Information Related to Company's Leases (Detail)
link:presentationLink
link:calculationLink
link:definitionLink
996105 - Disclosure - Leases - Supplemental Cash Flow Information Related to Leases (Detail)
link:presentationLink
link:calculationLink
link:definitionLink
996115 - Disclosure - Commitments and Contingencies - Additional Information (Detail)
link:presentationLink
link:calculationLink
link:definitionLink
996125 - Disclosure - Fair Value Measures - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail)
link:presentationLink
link:calculationLink
link:definitionLink
996135 - Disclosure - Related Party Transactions - Additional Information (Detail)
link:presentationLink
link:calculationLink
link:definitionLink
Proceeds from Sale of Property, Plant, and Equipment
Proceeds from sales of assets
Proceeds from Sale of Property, Plant, and Equipment, Total
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax
Unrealized gain (loss) on derivative financial instruments
Manufacturing.
Manufacturing [Member]
Manufacturing
Segments [Domain]
Segments
Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration]
Entity Incorporation, State or Country Code
Entity Incorporation, State or Country Code
Statement of Financial Position Location, Balance [Domain]
Balance Sheet Location
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Non-cash activity
Organization, Consolidation and Presentation of Financial Statements [Table]
Organization, consolidation and presentation of financial statements.
Schedule of Long-Term Debt Instruments [Table Text Block]
Summary of Debt
Equity [Abstract]
Entity Current Reporting Status
Entity Current Reporting Status
Change in contract liabilities
Increase (Decrease) in Deferred Liabilities
Change in contract liabilities
Increase (Decrease) in Deferred Liabilities, Total
Fair Value, Inputs, Level 2 [Member]
Fair Value, Inputs, Level 2
Deferred Tax Assets, Net of Valuation Allowance, Total
Deferred Tax Assets, Net of Valuation Allowance
Deferred tax assets
Commitments and Contingencies Disclosure [Text Block]
Commitments and Contingencies
Cash Flow Hedging [Member]
Cash Flow Hedging
Common Stock, Shares Authorized
Common stock, shares authorized
Finite-Lived Intangible Asset, Expected Amortization, Year Four
Future amortization expense, 2027
Accounts Receivable, after Allowance for Credit Loss
Accounts receivable, net
Accounts Receivable, after Allowance for Credit Loss, Total
O2024 H1 Dividends
O2024 H1 Dividends [Member]
O2024 H1 dividends.
Product and Service [Axis]
Product and Service
Fair Value by Liability Class [Domain]
Document Fiscal Period Focus
Document Fiscal Period Focus
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]
Debt Instrument, Interest Rate, Stated Percentage
Debt instrument, interest rate
Revenue from Contract with Customer [Abstract]
Entity Shell Company
Entity Shell Company
Asset impairment, disposal, and exit costs.
Asset Impairment, Disposal, And Exit Costs
Asset impairment, disposal, and exit costs
Transfers between Leased railcars for syndication and Inventories and Equipment on operating leases, net
Transfers between Leased Railcars for Syndication and Inventories and Equipment on operating leases, net
Transfers between leased railcars for syndication and inventories and equipment on operating leases, net.
Cash and Cash Equivalent
Cash and cash equivalents
Cash and Cash Equivalents, at Carrying Value, Total
Cash and Cash Equivalents, at Carrying Value, Beginning Balance
Cash and Cash Equivalents, at Carrying Value, Ending Balance
Goodwill Disclosure [Text Block]
Goodwill
Equipment on operating leases, net.
Equipment On Operating Leases Net
Equipment on operating leases, net
Asset Class [Domain]
Asset Class
Statement [Table]
Statement [Table]
Sublease period.
Sublease Period
Sublease period
Two Point Eight Seven Five Convertible Senior Notes Due 2024
Two Point Eight Seven Five Convertible Senior Notes Due2024 [Member]
2.875% Convertible senior notes, due 2024
2.875% Convertible Notes Due 2024
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability
Operating leases
Guarantor Obligations, Nature [Domain]
Guarantor Obligations, Nature
Statement [Line Items]
Statement [Line Items]
Entity Filer Category
Entity Filer Category
Commitments and Contingencies Disclosure [Table]
Commitments And Contingencies Disclosure [Table]
Commitments And Contingencies Disclosure [Table]
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]
Amounts reclassified from Accumulated other comprehensive loss
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent
Amounts reclassified from AOCL
Liabilities and Equity
Liabilities and Equity
Debt Instrument [Line Items]
Payables and Accruals [Abstract]
Long-Lived Tangible Asset [Axis]
Long-Lived Tangible Asset
Hedging Relationship [Axis]
Hedging Relationship
Derivative [Line Items]
Derivative [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure
Cash equivalents
Standard and Extended Product Warranty Accrual, Decrease for Payments
Payments
Standard and Extended Product Warranty Accrual, Decrease for Payments, Total
Euro Interbank Offered Rate.
Euro Interbank Offered Rate [Member]
EURIBOR
Goodwill
Goodwill
Goodwill, Total
Goodwill, Beginning Balance
Goodwill, Ending Balance
Total Goodwill
Geographical [Domain]
Inventory, Finished Goods, Gross
Finished goods
Inventory, Finished Goods, Gross, Total
O2026 Q2 Dividends
O2026 Q2 Dividends [Member]
O2026 Q2 Dividends
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block]
Reconciliation of Earnings from Operations to Earnings Before Income Tax and Earnings from Unconsolidated Affiliates
Segment, Expenditure, Addition to Long-Lived Assets
Capital expenditures
Schedule of Inventory, Current [Table Text Block]
Components of Inventories
Unallocated, including cash.
Unallocated Including Cash [Member]
Unallocated, including cash
Reduction to additional paid in capital
Additional Paid in Capital, Common Stock
Additional paid-in capital
Additional Paid in Capital, Common Stock, Beginning Balance
Additional Paid in Capital, Common Stock, Ending Balance
Debt issuance costs, net
Debt Issuance Costs, Net
Debt issuance costs, net
Debt Issuance Costs, Net, Total
Tabular disclosure of supplemental cash flow information related to operating leases.
Supplemental Cash Flow Information Related To Operating Leases Table [Text Block]
Supplemental Cash Flow Information Related to Leases
Derivative, Maturity Month and Year
Derivative Maturity Month And Year
Maturity date
Leasing Senior Term Debt [Member]
Leasing senior term debt.
Leasing Senior Term Debt
Railcar Components Member.
Railcar Components [Member]
Railcar Components
Adjustments to Additional Paid in Capital, Unamortized Restricted Stock
Adjustments To Additional Paid In Capital Unamortized Restricted Stock
Unamortized restricted stock
Guarantor Obligations, Nature [Axis]
Guarantor Obligations, Nature
Intangibles And Other Assets By Major Class [Table]
Intangibles and Other Assets by Major Class [Table]
Intangibles And Other Assets By Major Class [Table]
Disaggregation of Revenue [Table]
Maintenance Services
Maintenance Services [Member]
Maintenance services.
Investment, Name [Axis]
Earnings Per Share, Basic
Earnings Per Share, Basic, Total
Basic earnings per common share
Basic earnings per share
Summary of Revenue Disaggregated by Categories
Disaggregation of Revenue [Table Text Block]
Revolving Credit Facility [Member]
Revolving Line of Credit, 1st Component of Senior Secured Credit Facilities
Revolving Credit Facility
Operating Lease, Lease Income
Operating lease rental revenues
Operating Lease, Lease Income, Total
Increase (Decrease) in Accounts Receivable
Accounts receivable, net
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract]
Adjustments to reconcile net earnings to net cash provided by operating activities:
Hedging Designation [Domain]
Hedging Designation
Payments of Debt Issuance Costs
Debt issuance costs
Increase Decrease in Leased Railcars for Syndication
Increase Decrease In Leased Railcars For Syndication
Leased railcars for syndication
Consolidation Items [Domain]
Consolidation Items
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax
Reclassification of derivative financial instruments recognized in net earnings (loss), tax
Greenbrier
Equity, Attributable to Parent [Abstract]
Entity Small Business
Entity Small Business
Gain (Loss) from Components Excluded from Assessment of Cash Flow Hedge Effectiveness, Net
Gain (Loss) from Components Excluded from Assessment of Cash Flow Hedge Effectiveness, Net, Total
Gain (loss) amount excluded from effectiveness testing
Hedging Designation [Axis]
Hedging Designation
Retained earnings
Increase in retained earnings
Retained Earnings (Accumulated Deficit)
Retained Earnings (Accumulated Deficit), Total
Retained Earnings (Accumulated Deficit), Beginning Balance
Retained Earnings (Accumulated Deficit), Ending Balance
Redeemable Noncontrolling Interest [Member]
Redeemable Noncontrolling Interest [Member]
Contingently Redeemable Noncontrolling Interest
Derivatives Maturing From August Two Thousand Twenty Seven Through January Two Thousand Thirty Two [Member]
Derivatives maturing from august two thousand twenty seven through january two thousand thirty two.
Derivatives maturing from August 2027 through January 2032
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities
Dilutive effect of convertible notes
Incremental Common Shares Attributable to Conversion of Debt Securities, Total
Payments of Dividends
Dividends
Payments of Dividends, Total
Leases [Abstract]
Derivative Instrument Maturity
Derivative Instrument Maturity [Domain]
Derivative Instrument Maturity
Contract with Customer, Liability
Contract liabilities
Contract with Customer, Liability, Total
Amendment Flag
Amendment Flag
Product and Service [Domain]
Product and Service
Inventories
Inventory Disclosure [Text Block]
Excess and obsolete adjustment
Inventory Adjustments
Inventory Adjustments, Total
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months
Amount reclassified to manufacturing revenue and cost of revenue in the next year
Liabilities and Equity
Liabilities and Equity [Abstract]
Entity Address, Postal Zip Code
Entity Address, Postal Zip Code
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation
Net cash provided by operating activities
Information About Operating lease of Lessee and Lessor.
Leases [Text Block]
Leases
Effects of Cash Flow Hedges Included in Statements of Operations
Schedule of effects of cash flow hedges included in statement of income.
Schedule Of Effects Of Cash Flow Hedges Included In Statement Of Income Table [Text Block]
Common Stock [Member]
Common Stock Shares
Tabular disclosure of operating leases of lessor.
Operating Leases Of Lessor Table [Text Block]
Aggregate Minimum Future Amounts Receivable Under All Non-Cancelable Operating Leases and Subleases
Hedging Relationship [Domain]
Hedging Relationship
Lessee, Operating Lease, Liability, to be Paid, Year Three
2029
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment
Accumulated depreciation
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Total
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Beginning Balance
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Ending Balance
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]
Fair Values of Derivative Instruments
Entity Address, Address Line One
Entity Address, Address Line One
Fair Value Hierarchy and NAV [Axis]
Fair Value Hierarchy and NAV
Earnings Per Share [Abstract]
Commitments and Contingencies Disclosure [Line Items]
Commitments And Contingencies Disclosure [Line Items]
Commitments and Contingencies Disclosure [Line Items]
Supplemental Cash Flow Information [Abstract]
Cash paid during the period for
Derivative Asset
Asset Derivatives
Derivative financial instruments
Derivative Asset, Total
Statement of Financial Position Location, Balance [Axis]
Balance Sheet Location
Rail Cars [Member]
Railcar sales.
Railcar sales
Operating Lease, Right-of-Use Asset
Operating lease ROU assets
Net Income (Loss) Attributable to Noncontrolling Interest
Net Income (Loss) Attributable to Noncontrolling Interest, Total
Net (earnings) loss attributable to noncontrolling interest
Inventory Disclosure [Abstract]
Document Type
Document Type
Income Taxes Paid, Net
Income Taxes Paid, Net, Total
Income taxes (received) paid, net
Gross Profit
Margin
Portland Harbor Superfund Site
Location 1 [Member]
Location One [Member]
Subsidiary, Ownership Percentage, Parent
Ownership percentage by parent
Cost of Revenue [Abstract]
Cost of revenue
Entity Central Index Key
Entity Central Index Key
O2025 Q2 Dividends [Member]
O2025 Q2 Dividends
O2025 Q2 dividends.
Prime Rate [Member]
Prime Rate
Recourse Status [Domain]
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation
Decrease in Cash and cash equivalents and Restricted cash
O2026 H1 Dividends
O2026 H1 Dividends [Member]
O2026 H1 Dividends
Debt Instruments Additional Interest Rate Per Annum
Debt instruments additional interest rate per annum.
Debt instruments additional interest rate per annum
Notional covering percentage of outstanding balance
Percentage of Debt Hedged by Interest Rate Derivatives
Swap agreement interest rate
Liabilities
Liabilities [Abstract]
Goodwill [Line Items]
Common Stock Shares Issued Not Disclosed
Common stock shares issued not disclosed.
Equity Excluding Contingently Redeemable Noncontrolling Interest [Member]
Equity Excluding Contingently Redeemable Noncontrolling Interest [Member]
Equity Excluding Contingently Redeemable Noncontrolling Interest
Parent [Member]
Total Equity - Greenbrier
Leasing Asset Backed Term Notes
Leasing Asset Backed Term Notes [Member]
Leasing asset-backed term notes.
Leasing GBXL I Asset-backed Term Notes
Debt Instruments [Abstract]
Debt Disclosure [Abstract]
Derivative [Table]
Derivative [Table]
O2024 Q3 Dividends
O2024 Q3 dividends.
O2024 Q3 Dividends [Member]
Derivative, Notional Amount
Aggregate derivative notional amount
Cost of Sales [Member]
Cost of Sales
Ownership [Domain]
Current Fiscal Year End Date
Current Fiscal Year End Date
Schedule of Long-Term Debt Instruments [Table]
Senior Term Debt
Senior Term Debt [Member]
Senior Term Debt [Member]
Corporate Senior Term Debt
Schedule of Product Warranty Liability [Table Text Block]
Warranty Accrual Activity
Noncontrolling Interest Adjustments
Noncontrolling Interest Adjustments
Noncontrolling interest adjustments
Document Quarterly Report
Document Quarterly Report
Delayed Draw Facility [Member]
Delayed Draw Facility.
Delayed Draw Facility
Other Accrued Liabilities
Other accrued liabilities
Customer Relationships [Member]
Customer Relationships
Entity Address, State or Province
Entity Address, State or Province
Joint venture partner distribution declared
Joint Venture Partner Distribution Declared
Joint venture partner distribution declared
Guarantees and Product Warranties [Abstract]
Investment, Name [Domain]
Preferred Stock, Shares Outstanding
Preferred stock, outstanding
Preferred Stock, Shares Outstanding, Beginning Balance
Preferred Stock, Shares Outstanding, Ending Balance
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Comprehensive income attributable to Greenbrier
Leased Railcars for Syndication, at Carrying Value
Leased Railcars For Syndication At Carrying Value
Leased railcars for syndication
Right of use asset obtained in exchange for operating lease liabilities.
Right Of Use Asset Obtained In Exchange For Operating Lease Liabilities
ROU assets obtained in exchange for lease liabilities:
Incremental Common Shares Attributable to Share-based Payment Arrangements, Total
Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements
Dilutive effect of restricted stock units
Geographical [Axis]
Contract with Customer, Liability, Revenue Recognized
Revenue recognized from contract with customers liability
Accounts Receivable [Member]
Accounts Receivable
Equity, Attributable to Noncontrolling Interest
Noncontrolling interest
Stockholders' Equity Attributable to Noncontrolling Interest, Total
Stockholders' Equity Attributable to Noncontrolling Interest, Beginning Balance
Stockholders' Equity Attributable to Noncontrolling Interest, Ending Balance
Fleet Management [Member]
Fleet management.
Fleet management
Leasing & Management Services
Leasing and Management Services [Member]
Leasing and management services.
O 2026 Q1 Dividends [Member]
O 2026 Q1 dividends.
O2026 Q1 Dividends
GBXL I Series 2026-1 Class B Secured Railcar Equipment Notes
GBXL I Series 2026-1 Class B Secured Railcar Equipment Notes [Member]
GBXL I Series 2026-1 Class B Secured Railcar Equipment Notes
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other comprehensive income (loss)
Income Loss From Continuing Operations After Income Taxes And Before Equity In Earnings Of Unconsolidated Affiliates
Income Loss From Continuing Operations After Income Taxes And Before Equity In Earnings Of Unconsolidated Affiliates
Earnings before earnings from unconsolidated affiliates
Leasing Warehouse Credit Facility [Member]
Leasing warehouse credit facility.
Leasing Warehouse Credit Facility
Greenbrier-Astra Rail B.V.
Greenbrier Astra Rail B.V. [Member]
Greenbrier Astra Rail B.V. [Member]
Debt discount and issuance costs
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net, Total
O 2026 Q3 dividends.
O2026 Q3 Dividends [Member]
O2026 Q3 Dividends
Proceeds from Short-Term Debt, Maturing in More than Three Months
Proceeds from debt with maturities longer than 90 days
Feasibility and Evaluation Costs
Feasibility And Evaluation Costs
Remedial investigation and feasibility study
AOCI Attributable to Parent [Member]
AOCL
Derivative Liability
Liability Derivatives
Derivative financial instruments
Derivative Liability, Total
Finite-Lived Intangible Assets, Major Class Name [Domain]
Finite-Lived Intangible Assets, Major Class Name
Operating lease option to extend
Lessee, Operating Lease, Option to Extend
Preferred Stock, Value, Issued
Preferred stock - without par value; 25,000 shares authorized; none outstanding
Preferred Stock, Value, Issued, Total
Preferred Stock, Value, Issued, Beginning Balance
Preferred Stock, Value, Issued, Ending Balance
Selling, General and Administrative Expense
Selling and administrative expense
Selling, General and Administrative Expense, Total
Selling and administrative
Debt instrument, maturity date
Debt Instrument, Maturity Date
Two point eight seven five convertible senior notes due 2028.
Two Point Eight Seven Five Convertible Senior Notes Due2028 [Member]
2.875% Convertible senior notes, due 2028
2.875% Convertible Notes Due 2028
Recourse [Member]
Recourse
Minimum [Member]
Minimum
Railcar Maintenance [Member]
Railcar maintenance.
Railcar Maintenance
Amortization of Intangible Assets
Amortization expense
Amortization of Intangible Assets, Total
Fair Value, Inputs, Level 3 [Member]
Fair Value, Inputs, Level 3
Liabilities, Fair Value Disclosure [Abstract]
Liabilities:
Segment Reporting [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
Assets and Liabilities Measured at Fair Value on Recurring Basis
Related Party Transactions [Abstract]
Undiscounted costs for remedial alternatives.
Undiscounted Costs For Remedial Alternatives
Estimated undiscounted cost
Accounts Payable and Accrued Liabilities [Member]
Accounts Payable and Accrued Liabilities
Restricted Cash and Cash Equivalent
Restricted cash
Restricted cash
Restricted Cash and Cash Equivalents, Total
Commitments and Contingencies
Commitments and contingencies (Note 14)
Inventory, Work in Process, Gross
Work-in-process
Impairment of long-lived assets
Impairment Of Long Lived Assets
Impairment of long lived assets.
Operating Lease, Liability, Total
Operating Lease, Liability
Operating lease liabilities
Intangible Assets, Net And Other Assets (Excluding Goodwill)
Intangibles and other assets, net
Intangible Assets Net And Other Assets Excluding Goodwill
Total Intangibles and other assets, net
Debt Instrument, Basis Spread on Variable Rate
Debt instrument, percentage points added to the reference rate
O2024 Q2 dividends.
O2024 Q2 Dividends
O2024 Q2 Dividends [Member]
Common Stock, No Par Value
Common stock, without par value
Schedule of Goodwill
Schedule of Goodwill [Table Text Block]
Cash Flow, Operating Activities, Lessee [Abstract]
Payments for (proceeds from) interest in subsidiaries and affiliates.
Payments For Proceeds From Interest In Subsidiaries And Affiliates
Investments in and advances to / repayments from unconsolidated affiliates
Inventory, Raw Materials and Supplies, Gross
Manufacturing supplies and raw materials
Inventory, Raw Materials and Supplies, Gross, Total
Cash Provided by (Used in) Financing Activity, Continuing Operation [Abstract]
Cash flows from financing activities
Lessor and lessee lease, description.
Lessor And Lessee Lease Description [Table]
Lessor And Lessee Lease Description [Table]
Capital Expenditures Incurred but Not yet Paid
Capital expenditures accrued in Accounts payable and accrued liabilities
Net earnings
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
Net earnings
Net earnings
Accounts payable and accrued liabilities associated with cash distributions to joint venture partner
Accounts Payable And Accrued Liabilities Associated With Cash Distributions To Joint Venture Partner
Change in Accounts payable and accrued liabilities associated with cash distributions to joint venture partner
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Other Item
Other
Long-Term Debt, Type [Domain]
Basic
Weighted Average Number of Shares Outstanding, Basic
Weighted average basic common shares outstanding
Weighted Average Number of Shares Outstanding, Basic, Total
Repurchase of stock accrued in Accounts payable and accrued liabilities
Repurchase of Stock Accrued in Accounts payable and Accrued Liabilities
Repurchase of stock accrued in accounts payable and accrued liabilities.
Lessor, Operating Lease, Payment to be Received, Remainder of Fiscal Year
Remaining three months of 2026
Segments [Axis]
Segments
Long-Lived Tangible Asset [Domain]
Notes payable, net
Long-Term Debt
Debt, net
Debt, net
Related Party Transactions Disclosure [Text Block]
Related Party Transactions
O2025 Q3 Dividends
O2025 Q3 Dividends [Member]
O2025 Q3 Dividends.
European Debt
European Debt [Member]
European Debt
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition
APIC, Share-based Payment Arrangement, Increase for Cost Recognition, Total
Stock based compensation expense
Variable Rate [Domain]
Variable Rate
Beginning balance
Equity, Attributable to Parent
Ending balance
Total equity - Greenbrier
Statement of Stockholders' Equity [Abstract]
Equity Method Investments
Investment in unconsolidated affiliates
Finite-Lived Intangible Asset, Expected Amortization, Remainder of Fiscal Year
Future amortization expense, 2023
Increase (Decrease) in Operating Assets [Abstract]
Decrease (increase) in assets:
Balance Sheet Reconciliation [Abstract]
Balance Sheet Reconciliation [Abstract]
Balance sheet reconciliation
OCI, before Reclassifications, Net of Tax, Attributable to Parent
Other comprehensive income (loss) before reclassifications
Entity Address, Address Line Two
Entity Address, Address Line Two
Fair Value Disclosures [Text Block]
Fair Value Measures
Noncontrolling Interest [Member]
Noncontrolling Interest
Inventories [Member]
Inventories
Contract with customer asset and liability Line items.
Contract With Customer Asset And Liability [Line Items]
Contract With Customer Asset And Liability [Line Items]
Debt Instrument, Name [Domain]
Debt Instrument, Name
Earnings from unconsolidated affiliates
Income (Loss) from Equity Method Investments
Income (Loss) from Equity Method Investments, Total
Earnings from unconsolidated affiliates
Prepaid Expense and Other Assets
Prepaid and other assets
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Car Hire Utilization Arrangements Member.
Car Hire Utilization Arrangements [Member]
Car Hire Utilization Arrangements
Other assets
Increase (Decrease) in Other Operating Assets
Other assets
Increase (Decrease) in Other Operating Assets, Total
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]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]
Beginning balance
Temporary Equity, Including Noncontrolling Interest
Ending Balance
Temporary Equity, Carrying Amount, Including Portion Attributable to Noncontrolling Interests, Total
Credit Facility [Axis]
Credit Facility
Equity Method Investment, Ownership Percentage
Percentage of ownership in entity
Other Accumulated Other Comprehensive Income [Member]
Other Accumulated Other Comprehensive Income [Member]
Other
Lessor Operating Lease Payments To Be Received After Year Four
Thereafter
Lessor operating lease payments to be received after year four.
Lessor, Operating Lease, Payment to be Received, Year Two
2028
Lessee operating lease liability payments due after year four.
Lessee Operating Lease Liability Payments Due After Year Four
Thereafter
Accounting Standards Update [Extensible Enumeration]
Accounting Standards Update [Extensible List]
Income taxes payable
Taxes Payable
Taxes Payable, Total
Foreign Exchange Contract [Member]
Foreign Exchange Contracts
Entity Address, City or Town
Entity Address, City or Town
Approach to Calculate Diluted Earnings per Share
Schedule of Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Table Text Block]
Repurchase of stock (in shares)
Stock Repurchased During Period, Shares
Repurchase of stock (in shares)
Number of shares repurchased
Number of Reportable Segments
Number of reportable segments
Security Exchange Name
Security Exchange Name
Credit Facility [Domain]
Credit Facility
European
Europe
Europe [Member]
Intangible assets not subject to amortization
Indefinite-Lived Intangible Assets (Excluding Goodwill)
Indefinite-lived Intangible Assets (Excluding Goodwill), Total
Indefinite-lived Intangible Assets (Excluding Goodwill), Beginning Balance
Indefinite-lived Intangible Assets (Excluding Goodwill), Ending Balance
Redeemable Noncontrolling Interest, Equity, Carrying Amount
Contingently redeemable noncontrolling interest
Redeemable Noncontrolling Interest, Equity, Carrying Amount, Total
Share Repurchase Program, Current Authorization Of Shares Purchased
Share Repurchase Program, Current Authorization Of Shares Purchased
Share repurchase program, current authorization of shares purchased
Debt instrument amount outstanding
Long-Term Debt, Gross
Debt, gross
Debt, gross
Intersegment Eliminations [Member]
Intersegment Eliminations
Intangible Assets Disclosure [Text Block]
Intangibles and Other Assets, net
Monitoring Action Time Frame
Monitoring Action Time Frame
Period for monitoring
Gain (Loss) on Disposition of Other Assets
Net gain on disposition of equipment
Net gain on disposition of equipment
Line of Credit Maturity Month and Year
Line Of Credit Maturity Month And Year
Line of credit maturity date
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax
Gain (loss) recognized in AOCL on derivatives
Inventories
Inventory, Net
Inventories
Cash and cash equivalents and restricted cash, Ending balance
Cash and cash equivalents and restricted cash, Beginning balance
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation
Total Cash and cash equivalents and Restricted cash as presented above
Accounts Payable and Accrued Liabilities
Accounts payable and accrued liabilities
Accounts payable and accrued liabilities
Interest Paid, Excluding Capitalized Interest, Operating Activity
Interest
Unrealized Gain on Derivative Financial Instruments
Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest [Member]
Unrealized Gain (Loss) on Derivative Financial Instruments
Statistical Measurement [Domain]
Statistical Measurement
Mexico
MEXICO
Mexican
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block]
Summary of Estimated Revenue Related to Performance Obligations Wholly or Partially Unsatisfied
Document Period End Date
Document Period End Date
Cash distribution from unconsolidated affiliates and other
Proceeds From Unconsolidated affiliates and other.
Proceeds From Unconsolidated Affiliates And Other
Debt instrument maturity month and year.
Debt Instrument Maturity Month And Year
Debt instrument, maturity month and year
Fair Value Hierarchy and NAV [Domain]
Fair Value Hierarchy and NAV
Leasing and fleet management member.
Leasing & Fleet Management
Leasing and Fleet Management [Member]
O2025 Q1 Dividends
O2025 Q1 Dividends [Member]
O2025 Q1 dividends.
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax
Translation adjustment
Tabular disclosure of additional information relating to lease.
Additional Information Relating To Lease Table [Text Block]
Additional Information Related to Company's Leases
Statement of Financial Position [Abstract]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Cumulative Effect, Period of Adoption, Adjustment [Member]
Cumulative Effect Adjustment Due to Adoption
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation [Abstract]
Cash and cash equivalents and Restricted cash
Wheels & Parts
Wheels & Parts Reporting Unit [Member]
Wheels & parts reporting unit.
Not Designated as Hedging Instrument [Member]
Not Designated as Hedging Instrument
Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table]
Fair Values Derivatives Balance Sheet Location By Derivative Contract Type By Hedging Designation [Table]
Derivatives Maturing from August Two Thousand Twenty Seven Through March Two Thousand Thirty Two [Member]
Derivatives Maturing from August Two Thousand Twenty Seven Through March Two Thousand Thirty Two [Member]
Derivatives maturing from August 2027 through March 2032
Derivative Liability, Statement of Financial Position [Extensible Enumeration]
Lessee, Operating Lease, Liability, to be Paid, Year Two
2028
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, Gain (Loss) [Line Items]
Variable Rate [Axis]
Variable Rate
Finite-Lived Intangible Assets, Gross
Finite lived intangible assets gross
Finite-Lived Intangible Assets, Gross, Total
Earnings Per Share Disclosure [Table]
Earnings Per Share Disclosure [Table]
Earnings Per Share Disclosure [Table]
Weighted Average Number of Shares Outstanding, Diluted
Diluted
Weighted average diluted common shares outstanding
Weighted average diluted common shares outstanding
Securities Act File Number
Entity File Number
Derivative Instruments, Gain (Loss) [Table Text Block]
Effect of Derivative Instruments on Statements of Income
Cover [Abstract]
Cover
Asset impairment, disposal, and exit costs
Asset Impairment Disposal And Exit Costs Net
Asset impairment disposal and exit costs net.
Increase (Decrease) in Accounts Payable and Accrued Liabilities
Accounts payable and accrued liabilities
Increase (Decrease) in Accounts Payable and Accrued Liabilities, Total
Cumulative Effect, Period of Adoption [Axis]
Cumulative Effect, Period of Adoption
Derivative Instruments Gain (Loss) Reclassified from Accumulated OCI Into Income, Net
Derivative instruments gain (loss) reclassified from accumulated oci into income, net.
Gain (loss) reclassified from AOCL into income
Derivative, Gain (Loss) on Derivative, Net
Gain (loss) recognized in income on derivatives
Derivative, Gain (Loss) on Derivative, Net, Total
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest
Total before tax
Earnings before income tax and earnings from unconsolidated affiliates
GBXL I Series 2026-1 Class A Secured Railcar Equipment Notes [Member]
GBXL I Series 2026-1 Class A Secured Railcar Equipment Notes
GBXL I Series 2026-1 Class A Secured Railcar Equipment Notes
Segment Reporting Disclosure [Text Block]
Segment Information
Opreating lease remaining lease term
Operating Lease Remaining Lease Term.
Operating Lease Remaining Lease Term
Cash Provided by (Used in) Operating Activity, Continuing Operation [Abstract]
Cash flows from operating activities
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
Corporate, Non-Segment
Corporate
Share repurchase program expiration date
Share Repurchase Program, Expiration Date
Repurchase program expiration date
Finite-Lived Intangible Assets, Net
Finite-Lived Intangible Assets, Net, Total
Finite-Lived Intangible Assets, Net, Beginning Balance
Finite-Lived Intangible Assets, Net, Ending Balance
Cash Provided by (Used in) Investing Activity, Continuing Operation [Abstract]
Cash flows from investing activities
Product Warranty Disclosure [Text Block]
Accrued Warranty
Accounts Receivable Net.
Accounts Receivable Net [Member]
Accounts Receivable, Net
Senior Secured Credit Facility Revolving Line Of Credit Component Two [Member]
Senior Secured Credit Facility Revolving Line Of Credit Component Two [Member]
Mexican Railcar Manufacturing Operations Line of Credit 2, 3rd Component of Senior Secured Credit Facilities
Earnings Per Share Disclosure [Line Items]
Earnings Per Share Disclosure [Line Items]
Earnings Per Share Disclosure [Line Items]
Dividends Declared And Accrued In Accounts Payable And Accrued Liabilities
Dividends Declared And Accrued In Accounts Payable And Accrued Liabilities
Change in Accounts payable and accrued liabilities associated with dividends declared
Recent Accounting Pronouncements
New Accounting Pronouncements, Policy [Policy Text Block]
Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]
Aggregate Minimum Future Amounts Payable Under Operating Leases
Derivative Instruments, Gain (Loss) [Table]
Derivative Instruments Gain Loss By Hedging Relationship By Income Statement Location By Derivative Instrument Risk [Table]
Ownership [Axis]
Comprehensive Income (Loss) Note [Text Block]
Accumulated Other Comprehensive Loss
Senior Secured Credit Facility Revolving Line Of Credit Component One [Member]
Senior Secured Credit Facility Revolving Line Of Credit Component One [Member]
Mexican Railcar Manufacturing Operations Line of Credit 1, 3rd Component of Senior Secured Credit Facilities
Increase (Decrease) in Contract with Customer, Asset
Change in contract assets
Depreciation
Depreciation expense
Depreciation, Total
Brian Comstock [Member]
Brian Comstock.
Brian Comstock
Share Repurchase Program, Current Authorization Of Shares Purchased Amount
Share Repurchase Program, Current Authorization Of Shares Purchased Amount
Share repurchase program, current authorization of shares purchased amount
Common Stock, Shares, Outstanding
Ending Balance (in shares)
Beginning balance (in shares)
Common stock, shares outstanding
Depreciation, Depletion and Amortization
Depreciation and amortization
Depreciation, Depletion and Amortization, Total
Revenue, Remaining Performance Obligation, Amount
Revenue type 1
Expected revenue to be recognized
Dividends [Domain]
Document Transition Report
Document Transition Report
Lessor and lessee lease, description.
Lessor And Lessee Lease Description [Line Items]
Lessor and Lessee, Lease, Description [Line Items]
Rick Galvan [Member]
Rick Galvan.
Rick Galvan
Cost of Revenue
Cost of revenue
Cost of Revenue, Total
Repurchase of stock
Payments for Repurchase of Common Stock
Comprehensive income
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest
Statement of Cash Flows [Abstract]
Proceeds from (Repayments of) Short-Term Debt, Maturing in Three Months or Less
Proceeds from (Repayments of) Short-term Debt, Maturing in Three Months or Less, Total
Net change in debt with maturities of 90 days or less
Assets:
Assets, Fair Value Disclosure [Abstract]
Derivative Asset, Statement of Financial Position [Extensible Enumeration]
Interest Rate Swap [Member]
Interest Rate Swap Contracts
Earnings Per Share [Text Block]
Earnings Per Share
Net earnings attributable to Greenbrier
Net earnings attributable to Greenbrier
Increase (Decrease) in Inventories
Inventories
Increase (Decrease) in Inventories, Total
Inventories
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid
Balloon payment
Operating Lease, Cost
Operating lease expense
Payments of Distributions to Affiliates
Cash distribution to joint venture partner
Income tax receivable
Income Taxes Receivable, Current
Line of credit, guaranteed amount
Line of Credit, Guaranteed Amount
Line of credit, guaranteed amount.
Contract with customer asset and liability.
Contract With Customer Asset And Liability [Table]
Contract With Customer Asset And Liability [Table]
Operating Lease, Payments
Operating cash flows from operating leases
Derivatives, Fair Value [Line Items]
Derivatives Fair Value [Line Items]
Assets [Abstract]
Assets
Document Fiscal Year Focus
Document Fiscal Year Focus
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Components of Accumulated Other Comprehensive Loss (AOCL), Net of Tax
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period
Expected revenue to be recognized period
Lessor, Operating Lease, Payment to be Received, Year One
2027
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]
Summary of Contract Balances
Deferred Revenue, Total
Deferred Revenue
Deferred revenue
Finite-Lived Intangible Asset, Expected Amortization, Year One
Future amortization expense, 2024
Accuracy Of Cost Estimate
Accuracy Of Cost Estimate
Accuracy of cost estimate
Fair Value Disclosures [Abstract]
Commitments and Contingencies Disclosure [Abstract]
North America
North America [Member]
North American
2027
Lessee, Operating Lease, Liability, to be Paid, Year One
Revolving notes
Long-term Line of Credit, Total
Credit facilities
Loan agreement
Debt Instrument [Axis]
Debt Instrument
Derivative Instrument [Axis]
Derivative Instrument
Assets, Fair Value Disclosure
Assets, Fair Value Disclosure, Total
Increase (Decrease) in Operating Liabilities [Abstract]
Increase (decrease) in liabilities:
Revenues
Revenue
Total consolidated revenues
Increase (Decrease) in Income Taxes Receivable
Income tax receivable
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation
Net cash provided by (used in) investing activities
Repayments of Short-Term Debt, Maturing in More than Three Months
Repayments of debt with maturities longer than 90 days
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]
Employee-related Liabilities
Employee-related Liabilities, Total
Accrued payroll and related liabilities
Derivative Instruments and Hedging Activities Disclosure [Text Block]
Derivative Instruments
Remaining authorized repurchase amount
Share Repurchase Program, Remaining Authorized, Amount
Change in contract assets, inventories
Increase (Decrease) in Contract with Customer Asset Inventories
Increase (decrease) in contract with customer asset inventories.
Axis LLC
Axis LLC Member.
Axis Llc [Member]
Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year
Remaining three months of 2026
Lessor, Operating Lease, Payment to be Received
Operating Leases, Future Minimum Payments Receivable, Total
Derivative Instrument Maturity
Derivative Instrument Maturity [Axis]
Derivative Instrument Maturity
Letters of Credit Outstanding, Amount
Letter of credit facility outstanding amount
Fair Value, Recurring and Nonrecurring [Table]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table]
Lessor, Operating Lease, Payment to be Received, Year Four
2030
Additional Paid-in Capital [Member]
Additional Paid-in Capital
Measurement Frequency [Domain]
Measurement Frequency
Stock repurchased authorized amount
Share Repurchase Program, Authorized, Amount
Authorized amount under stock repurchase program
Standard and Extended Product Warranty Accrual, Increase (Decrease) for Preexisting Warranties
Charged to cost of revenue, net
Standard and Extended Product Warranty Accrual, Increase (Decrease) for Preexisting Warranties, Total
Statement of Income Location, Balance [Axis]
Income Statement Location
Trading Symbol
Trading Symbol
Related Party Transaction [Table]
Schedule Of Related Party Transactions By Related Party [Table]
Proceeds from Notes Payable
Proceeds from issuance of notes payable
Proceeds from Notes Payable, Total
Identifiable Intangibles and Other Assets, Net
Intangible And Other Assets
Intangible And Other Assets Table [Text Block]
Unrealized gain (loss) on derivative financial instruments, tax
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax
Related Party Transaction, Purchases from Related Party
Purchases of goods from related party
Fair Value, Measurements, Recurring
Fair Value, Recurring [Member]
Accounts Payable and Accrued Liabilities Disclosure [Text Block]
Accounts Payable and Accrued Liabilities
Lessee, Operating Lease, Liability, to be Paid
Total lease payments
Lessee, Operating Lease, Liability, Undiscounted Excess Amount
Less: Imputed interest
WIBOR [Member]
Wibor [Member]
WIBOR
O2025 H1 Dividends
O2025 H1 Dividends [Member]
O2025 H1 dividends.
Equity Components [Axis]
Equity Components
Accounts Payable
Trade payables
Accounts Payable, Total
Equity Component [Domain]
Equity Component
Asset Class [Axis]
Accounts Receivable
O2024 Q1 Dividends
O2024 Q1 Dividends [Member]
O2024 Q1 dividends.
Debt Instrument, Maturity Year
Debt instrument, maturity year.
Debt instrument, maturity year
Goodwill and Intangible Assets Disclosure [Abstract]
Standard and Extended Product Warranty Accrual
Balance at end of period
Balance at beginning of period
Accrued warranty
Standard and Extended Product Warranty Accrual, Total
Other notes payable
Other Notes Payable
Other Notes Payable, Total
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]
Operating Lease, Liability, Statement of Financial Position [Extensible List]
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures
Restricted stock awards (net of cancellations) (in shares)
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures, Total
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table]
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Table]
SOFR adjustment rate.
SOFR Adjustment Rate [Member]
SOFR Adjustment
Statement of Comprehensive Income [Abstract]
Standard and Extended Product Warranty Accrual, Foreign Currency Translation Gain (Loss)
Currency translation effect
Maximum [Member]
Maximum
Designated as Hedging Instrument [Member]
Designated as Hedging Instrument
Statistical Measurement [Axis]
Statistical Measurement
Finite-Lived Intangible Assets, Accumulated Amortization
Accumulated amortization
Common Stock, Value, Issued
Common Stock, Value, Issued, Total
Common Stock, Value, Issued, Beginning Balance
Common Stock, Value, Issued, Ending Balance
Common stock - without par value; 50,000 shares authorized; 30,939 and 30,873 shares outstanding at May 31, 2026 and August 31, 2025
Other Comprehensive Income, Other, Net of Tax
Other (net of tax effect)
Nonrecourse [Member]
Nonrecourse
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]
Amounts Reclassified out of AOCL
Dividends [Axis]
Performance Guarantee [Member]
Performance Guarantee
Total equity
Beginning balance
Equity, Including Portion Attributable to Noncontrolling Interest
Ending balance
Interest and Foreign Exchange [Member]
Interest And Foreign Exchange [Member]
Interest and Foreign Exchange
Greenbrier
Greenbrier [Member]
Greenbrier.
Schedule of Weighted Average Number of Shares [Table Text Block]
Reconciliation of Shares Used in Computation of Basic and Diluted Earnings Per Share
Preferred Stock, Shares Authorized
Preferred stock, shares authorized
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest, Total
Comprehensive loss attributable to noncontrolling interest
Comprehensive (income) loss attributable to noncontrolling interest
Finite-Lived Intangible Assets by Major Class [Axis]
Finite-Lived Intangible Assets by Major Class
Equipment on Operating Leases to Other Party [Member]
Equipment on Operating Leases to Other Party [Member]
Equipment on Operating Lease
Payment, Tax Withholding, Share-Based Payment Arrangement
Tax payments for net share settlement of restricted stock
Related Party Transaction [Line Items]
Related Party Transaction [Line Items]
Increase (Decrease) in Contract with Customer Asset Accounts Receivable, Net
Increase (decrease) in contract with customer asset accounts receivable, net
Change in contract assets, accounts receivable, net
Revenue from Contract with Customer [Text Block]
Revenue Recognition
Entity Registrant Name
Entity Registrant Name
Debt Disclosure [Text Block]
Debt, net
Debt Instrument, Periodic Payment, Principal
Periodic principal payment
Finite-Lived Intangible Asset, Expected Amortization, Year Two
Future amortization expense, 2025
Accumulated Other Comprehensive Income (Loss) [Table]
Accumulated Other Comprehensive Income Loss [Table]
Frequency of payments
Line of Credit Facility, Frequency of Payments
SOFR
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]
Finite-Lived Intangible Asset, Expected Amortization, Year Three
Future amortization expense, 2026
Intangibles and Other Assets by Major Class [Line Items]
Intangibles And Other Assets By Major Class [Line Items]
Intangibles and Other Assets by Major Class [Line Items]
Income tax (expense) benefit
Income Tax Expense (Benefit), Total
Income tax benefit
Income tax (benefit) expense
Income tax expense
Income tax expense
Measurement Frequency [Axis]
Measurement Frequency
Sales [Member]
Sales
Payments to Acquire Productive Assets
Capital expenditures
Payments to Acquire Productive Assets, Total
Capital expenditures
Interest and foreign exchange, net
Interest And Foreign Exchange Net
Interest and foreign exchange
Repurchase of stock
Stock Repurchased During Period, Value
Repurchase of stock
Number of shares repurchased amount
Subsidiary, Ownership Percentage, Noncontrolling Owner
Contingently redeemable noncontrolling interest percentage
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
Liability Class [Axis]
Accumulated Other Comprehensive Income (Loss), Net of Tax
Accumulated other comprehensive loss
Accumulated Other Comprehensive Income (Loss), Net of Tax, Total
Consolidation Items [Axis]
Consolidation Items
Payment for (Proceeds from) Other Investing Activity
Other
Other
Assets
Assets
Total assets
Income Statement [Abstract]
Preferred Stock, No Par Value
Preferred stock, without par value
Deferred Income Tax Expense (Benefit)
Deferred income taxes
Deferred Income Tax Expense (Benefit), Total
Subsegments Consolidation Items [Axis]
Earnings Per Share, Diluted, Total
Diluted earnings per common share
Diluted earnings per share
Earnings Per Share, Diluted
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Segments Internal Financial Reports
Operating Segments [Member]
Operating Segments
Disaggregation of Revenue [Abstract]
City Area Code
City Area Code
Summary of Net Carrying Amount of Debt and Related Assets [Table Text Block]
Summary of Net Carrying Amount of Debt and Related Assets
Summary of Net Carrying Amount of Debt and Related Assets
GBX Leasing Warehouse Facility [Member]
G B X Leasing Warehouse Facility [Member]
GBX Leasing Warehouse Facility
GBX Leasing
Other Comprehensive Income (Loss), Net of Tax
Other comprehensive income
Other comprehensive income (loss), net
Debt Instrument, Face Amount
Debt, Principal amount
Line of Credit Facility, Maximum Borrowing Capacity
Line of credit facility maximum capacity
Other Intangible Assets [Member]
Other Intangible Assets
Recourse Status [Axis]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax
Reclassification of derivative financial instruments recognized in net earnings
Dividends, Cash
Cash dividends
Dividends, Cash, Total
Weighted average remaining lease term (years)
Operating Lease, Weighted Average Remaining Lease Term
Segment Reporting Information [Line Items]
Segment Reporting Information [Line Items]
Lease, Cost
Total
Property, Plant and Equipment, Net
Property, plant and equipment, net
Property, Plant and Equipment, Net, Total
Property, Plant and Equipment, Net, Beginning Balance
Property, Plant and Equipment, Net, Ending Balance
Officer [Member]
Officer
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures
Restricted stock awards (net of cancellations)
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures, Total
Noncontrolling Interest, Period Increase (Decrease)
Noncontrolling interest adjustments
Noncontrolling Interest, Period Increase (Decrease), Total
Earnings from operations
Operating Income (Loss)
Earnings (loss) from operations
Earnings from operations
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred
Unrealized pre-tax gain (loss) that would be credited to interest expense in the next year
Percentage Of Joint Venture Debt Guaranteed
Percentage Of Joint Venture Debt Guaranteed
Joint venture partner each guaranteed percentage
Retained Earnings [Member]
Retained Earnings
Share-Based Payment Arrangement, Noncash Expense
Stock based compensation expense
Share-based Payment Arrangement, Noncash Expense, Total
Weighted average discount rate
Operating Lease, Weighted Average Discount Rate, Percent
Fair Value, Inputs, Level 1 [Member]
Fair Value, Inputs, Level 1
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation
Net cash used in financing activities
Notes Payable
Notes payable, net
Notes payable, net
Lessor, Operating Lease, Payment to be Received, Year Three
2029
Lease, Cost [Table Text Block]
Components of Operating Lease Costs
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member]
Foreign Currency Translation Adjustment
Deferred Income Tax Liabilities, Net
Deferred income taxes
Deferred Income Tax Liabilities, Net, Total
Investments, Fair Value Disclosure
Nonqualified savings plan investments
Investments, Fair Value Disclosure, Total
Derivative Contract [Domain]
Derivative Contract
Goodwill [Table]
Transfer of leased railcars for syndication and inventories to equipment on operating leases.
Transfer Of Leased Railcars For Syndication And Inventories To Equipment On Operating Leases
Transfer from Leased railcars for syndication and Inventories to Equipment on operating leases, net
Entity Interactive Data Current
Entity Interactive Data Current
Cost Of Revenue [Member]
Cost Of Revenue [Member]
Cost of Revenue
Increase (Decrease) in Contract with Customer, Liability
Deferred revenue
Statement of Income Location, Balance [Domain]
Income Statement Location
Remedial Action Time Frame.
Remedial Action Objective Time Frame
Period for remedial action
Contract with Customer, Asset, after Allowance for Credit Loss
Contract assets
Contract with Customer, Asset, after Allowance for Credit Loss, Total
Common Stock, Dividends, Per Share, Declared
Cash dividend per share
Cumulative Effect, Period of Adoption [Domain]
Cumulative Effect, Period of Adoption
Line of Credit Facility, Current Borrowing Capacity
Aggregate amount available to draw down
Entity Tax Identification Number
Entity Tax Identification Number
Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Equity:
Revenues [Abstract]
Revenue
Repayments of Notes Payable
Repayments of notes payable
Long-Term Debt, Type [Axis]
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Organization, consolidation and presentation of financial statements.
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
Interim Financial Statements
Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation
Effect of exchange rate changes
Local Phone Number
Local Phone Number
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Short-Term Lease, Cost
Short-term lease expense
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Weighted average common shares
Change in Contract with Customer, Asset and Liability [Abstract]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax
Revenue
Revenue from Contract with Customer, Excluding Assessed Tax, Total
Revenue
Lessee, Operating Lease, Liability, to be Paid, Year Four
2030
Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]
Accounts Payable and Accrued Liabilities
GBXL I 2026 Notes [Member]
GBXL I 2026 Notes
2026 GBXL Notes
Entity Emerging Growth Company
Entity Emerging Growth Company
Subsegments Consolidation Items [Domain]
Debt Instrument Repayment Date
Debt instrument repayment date.
Debt instrument, repayment date