The Greenbrier Companies, Inc. (GBX) 10-Q 10 Jan 25 2025 Q1 Quarterly report Financial data

Cover Page

Cover Page - shares	3 Months Ended
	Nov. 30, 2024	Jan. 03, 2025
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Nov. 30, 2024
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	Q1
Entity Registrant Name	THE GREENBRIER COMPANIES, INC.
Trading Symbol	GBX
Security Exchange Name	NYSE
Entity Central Index Key	0000923120
Current Fiscal Year End Date	--08-31
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Title of 12(b) Security	Common Stock
Entity Common Stock, Shares Outstanding		31,359,165
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	1-13146
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Shell Company	false
Entity Incorporation, State or Country Code	OR
Entity Tax Identification Number	93-0816972
Entity Address, Address Line One	One Centerpointe Drive
Entity Address, Address Line Two	Suite 200
Entity Address, City or Town	Lake Oswego
Entity Address, State or Province	OR
Entity Address, Postal Zip Code	97035
City Area Code	503
Local Phone Number	684-7000

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Nov. 30, 2024	Aug. 31, 2024
Assets
Cash and cash equivalents	$ 300	$ 351.8
Restricted cash	12.9	16.8
Accounts receivable, net	583	523.8
Income tax receivable	26.7	45.1
Inventories	753.8	770.9
Leased railcars for syndication	228.1	130.7
Equipment on operating leases, net	1,234.1	1,243.5
Property, plant and equipment, net	695.5	711.7
Investment in unconsolidated affiliates	83.9	87.3
Intangibles and other assets, net	242.1	244.4
Goodwill	127.4	128.5
Total assets	4,287.5	4,254.5
Liabilities and Equity
Revolving notes	444.9	351.6
Accounts payable and accrued liabilities	653.1	731.4
Deferred income taxes	131.4	130.1
Deferred revenue	45.5	58.9
Notes payable, net	1,394.5	1,404.2
Commitments and contingencies (Note 14)
Contingently redeemable noncontrolling interest	43.1	41.7
Greenbrier
Preferred stock - without par value; 25,000 shares authorized; none outstanding
Common stock - without par value; 50,000 shares authorized; 31,359 and 31,135 shares outstanding at November 30, 2024 and August 31, 2024
Additional paid-in capital	373.8	375.1
Retained earnings	1,080.5	1,035
Accumulated other comprehensive loss	(41.6)	(34)
Total equity – Greenbrier	1,412.7	1,376.1
Noncontrolling interest	162.3	160.5
Total equity	1,575	1,536.6
Liabilities and Equity	$ 4,287.5	$ 4,254.5

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Nov. 30, 2024	Aug. 31, 2024
Statement of Financial Position [Abstract]
Preferred stock, without par value
Preferred stock, shares authorized	25,000,000	25,000,000
Preferred stock, outstanding	0	0
Common stock, without par value
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares outstanding	31,359,000	31,135,000

Condensed Consolidated Statemen

Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Millions		3 Months Ended
		Nov. 30, 2024	Nov. 30, 2023
Revenue
Revenue		$ 875.9	$ 808.8
Cost of revenue
Cost of revenue		702.3	687.5
Margin		173.6	121.3
Selling and administrative expense		62	56.3
Net (gain) loss on disposition of equipment		(0.2)	0.1
Earnings from operations		111.8	64.9
Other costs
Interest and foreign exchange		23.4	23.2
Earnings before income tax and earnings from unconsolidated affiliates		88.4	41.7
Income tax expense		(33.4)	(10)
Earnings before earnings from unconsolidated affiliates		55	31.7
Earnings from unconsolidated affiliates		4.1	1.5
Net earnings		59.1	33.2
Net earnings attributable to noncontrolling interest		(3.8)	(2)
Net earnings attributable to Greenbrier		$ 55.3	$ 31.2
Basic earnings per common share		$ 1.77	$ 1
Diluted earnings per common share	[1]	$ 1.72	$ 0.96
Weighted average common shares:
Basic		31,246	31,025
Diluted		32,223	32,782
Manufacturing
Revenue
Revenue		$ 820.4	$ 759.7
Cost of revenue
Cost of revenue		680.4	672.5
Leasing & Fleet Management
Revenue
Revenue		55.5	49.1
Cost of revenue
Cost of revenue		$ 21.9	$ 15
[1] Diluted earnings per share was calculated as follows: Earnings before interest and debt issuance costs on the 2.875 % convertible notes due 2024 Weighted average diluted common shares outstanding

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions		3 Months Ended
		Nov. 30, 2024	Nov. 30, 2023
Statement of Comprehensive Income [Abstract]
Net earnings		$ 59.1	$ 33.2
Other comprehensive income (loss)
Translation adjustment		(11.3)	0
Reclassification of derivative financial instruments recognized in net earnings	[1]	(3.5)	(3.5)
Unrealized gain (loss) on derivative financial instruments	[2]	7.2	4.3
Other (net of tax effect)		0	0.1
Other comprehensive income		(7.6)	0.9
Comprehensive income		51.5	34.1
Comprehensive income attributable to noncontrolling interest		(3.8)	(2)
Comprehensive income attributable to Greenbrier		$ 47.7	$ 32.1
[1] Net of tax effect of $ 0.9 million for the three months ended November 30, 2024 and 2023. Net of tax effect of $( 2.0 million) and $( 1.0 million) for the three months ended November 30, 2024 and 2023, respectively.

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Nov. 30, 2024	Nov. 30, 2023
Statement of Comprehensive Income [Abstract]
Reclassification of derivative financial instruments recognized in net earnings (loss), tax	$ 0.9	$ 0.9
Unrealized gain (loss) on derivative financial instruments, tax	$ (2)	$ (1)

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Equity - USD ($) $ in Millions	Total	Common Stock Shares	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Total Equity - Greenbrier	Noncontrolling Interest	Equity Excluding Contingently Redeemable Noncontrolling Interest	Contingently Redeemable Noncontrolling Interest
Beginning balance at Aug. 31, 2023			$ 364.4	$ 897.5	$ (7.3)	$ 1,254.6	$ 155.6	$ 1,410.2
Beginning balance (in shares) at Aug. 31, 2023		30,900,000
Beginning balance at Aug. 31, 2023									$ 55.6
Net earnings	$ 33.2			31.2		31.2	1.1	32.3	0.9
Other comprehensive income (loss), net	0.9				0.9	0.9		0.9
Noncontrolling interest adjustments							0.4	0.4
Restricted stock awards (net of cancellations)			10.4			10.4		10.4
Restricted stock awards (net of cancellations) (in shares)		200,000
Unamortized restricted stock			(15.6)			(15.6)		(15.6)
Stock based compensation expense			3.4			3.4		3.4
Repurchase of stock	$ (1.3)		(1.3)			(1.3)		(1.3)
Repurchase of stock (in shares)	(38,000)
Cash dividends				(9.6)		(9.6)		(9.6)
Ending balance at Nov. 30, 2023			361.3	919.1	(6.4)	1,274	157.1	1,431.1
Ending Balance (in shares) at Nov. 30, 2023		31,100,000
Ending Balance at Nov. 30, 2023									56.5
Beginning balance at Aug. 31, 2024	$ 1,536.6		375.1	1,035	(34)	1,376.1	160.5	1,536.6
Beginning balance (in shares) at Aug. 31, 2024	31,135,000	31,100,000
Beginning balance at Aug. 31, 2024									41.7
Net earnings	$ 59.1			55.3		55.3	2.4	57.7	1.4
Other comprehensive income (loss), net	$ (7.6)				(7.6)	(7.6)		(7.6)
Noncontrolling interest adjustments							4.4	4.4
Joint venture partner distribution declared							(5)	(5)
Restricted stock awards (net of cancellations)			11.3			11.3		11.3
Restricted stock awards (net of cancellations) (in shares)		300,000
Unamortized restricted stock			(16.8)			(16.8)		(16.8)
Stock based compensation expense			4.2			4.2		4.2
Repurchase of stock (in shares)	0
Cash dividends				(9.8)		(9.8)		(9.8)
Ending balance at Nov. 30, 2024	$ 1,575		$ 373.8	$ 1,080.5	$ (41.6)	$ 1,412.7	$ 162.3	$ 1,575
Ending Balance (in shares) at Nov. 30, 2024	31,359,000	31,400,000
Ending Balance at Nov. 30, 2024									$ 43.1

Condensed Consolidated Statem_5

Condensed Consolidated Statements of Equity (Parenthetical) - $ / shares	3 Months Ended
	Nov. 30, 2024	Nov. 30, 2023
O2025 Q1 Dividends
Cash dividend per share	$ 0.3
O2024 Q1 Dividends
Cash dividend per share		$ 0.3

Condensed Consolidated Statem_6

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Nov. 30, 2024	Nov. 30, 2023
Cash flows from operating activities
Net earnings	$ 59.1	$ 33.2
Adjustments to reconcile net earnings to net cash used in operating activities:
Deferred income taxes	(1.4)	(29.3)
Depreciation and amortization	29.2	26.8
Net (gain) loss on disposition of equipment	(0.2)	0.1
Stock based compensation expense	4.2	3.4
Noncontrolling interest adjustments	4.4	0.4
Other	0.9	0.9
Decrease (increase) in assets:
Accounts receivable, net	(65.3)	72.6
Income tax receivable	18.4	31.7
Inventories	(0.4)	(61.6)
Leased railcars for syndication	(83.3)	(20)
Other assets	1.9	4.9
Increase (decrease) in liabilities:
Accounts payable and accrued liabilities	(20.8)	(103.2)
Deferred revenue	(11.8)	(4.6)
Net cash used in operating activities	(65.1)	(44.7)
Cash flows from investing activities
Proceeds from sales of assets	0.6	0.4
Capital expenditures	(59.1)	(68.3)
Cash distribution from unconsolidated affiliates and other	4.8	0.6
Net cash used in investing activities	(53.7)	(67.3)
Cash flows from financing activities
Net change in revolving notes with maturities of 90 days or less	122	31
Proceeds from revolving notes with maturities longer than 90 days	5	90.1
Repayments of revolving notes with maturities longer than 90 days	(31.2)	(139.9)
Proceeds from issuance of notes payable	0.2	178.6
Repayments of notes payable	(10.8)	(9.7)
Debt issuance costs	(0.9)	(2.5)
Repurchase of stock		(1.3)
Dividends	(10.4)	(10.3)
Cash distribution to joint venture partner	(5)
Tax payments for net share settlement of restricted stock	(5.5)	(5.2)
Net cash provided by financing activities	63.4	130.8
Effect of exchange rate changes	(0.3)	(0.2)
Increase (decrease) in Cash and cash equivalents and Restricted cash	(55.7)	18.6
Cash and cash equivalents and Restricted cash
Cash and cash equivalents and restricted cash, Beginning balance	368.6	302.7
Cash and cash equivalents and restricted cash, Ending balance	312.9	321.3
Balance sheet reconciliation
Cash and cash equivalents	300	307.3
Restricted cash	12.9	14
Total Cash and cash equivalents and Restricted cash as presented above	312.9	321.3
Cash paid during the period for
Interest	17.8	22.4
Income taxes paid, net	8.1	7.9
Non-cash activity
Transfers between Leased railcars for syndication and Inventories and Equipment on operating leases, net	14.2	50.7
Capital expenditures accrued in Accounts payable and accrued liabilities	8.5	4.5
Change in Accounts payable and accrued liabilities associated with dividends declared	$ 0.6	$ (0.7)

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Millions	3 Months Ended
	Nov. 30, 2024	Nov. 30, 2023
Pay vs Performance Disclosure
Net Income (Loss)	$ 55.3	$ 31.2

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Nov. 30, 2024
Trading Arrangements, by Individual
Material Terms of Trading Arrangement	During the three months ended November 30, 2024, no officers or directors, as defined in Rule 16a-1(f), adopted and/or terminated a “ Rule 10b5-1 trading arrangement” or a “ non-Rule 10b5-1 trading arrangement,” as defined in Item 408 of Regulation S-K.
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Interim Financial Statements

Interim Financial Statements	3 Months Ended
	Nov. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Interim Financial Statements	Note 1 – Interim Financial Statements The Condensed Consolidated Financial Statements of The Greenbrier Companies, Inc. and its subsidiaries as of November 30, 2024 and for the three months ended November 30, 2024 and 2023 have been prepared to reflect all adjustments (consisting of normal recurring accruals) that, in the opinion of management, are necessary for a fair presentation of the financial position, operating results and cash flows for the periods indicated. References in this Quarterly Report on Form 10-Q to the “Company,” “Greenbrier,” “we,” “us” and “our” refer to The Greenbrier Companies, Inc. and, where appropriate, its subsidiaries. All references to years refer to the fiscal years ended August 31st unless otherwise noted. The results of operations for the three months ended November 30, 2024 are not necessarily indicative of the results to be expected for the entire year ending August 31, 2025. Certain notes and other information have been condensed or omitted from the interim financial statements presented in this Quarterly Report on Form 10-Q. Therefore, these unaudited financial statements should be read in conjunction with the Consolidated Financial Statements contained in the Company’s Annual Report on Form 10-K for the year ended August 31, 2024. Effective September 1, 2024, the Company combined the former Maintenance Services and Manufacturing segments into a single reportable segment, Manufacturing. The combined Manufacturing reportable segment reflects a comprehensive production operation that allows the Company to streamline production processes and resources to better serve customers. Separately, the Company renamed the former Leasing & Management Services reportable segment to Leasing & Fleet Management. These changes reflect the realignment of the Company’s organizational structure and reporting regularly provided to the Company’s chief operating decision maker to assess performance and allocate resources. These changes had no impact on the Company’s consolidated results of operations or financial position. Prior period segment results have been recast to reflect the Company’s new reportable segments. See Note 12 - Segment Information to the Condensed Consolidated Financial Statements for additional information on the Company’s reportable segments. Management Estimates – The preparation of financial statements in conformity with the generally accepted accounting principles (GAAP) in the United States ( U.S.) requires judgment on the part of management to arrive at estimates and assumptions on matters that are inherently uncertain. These estimates may affect the amount of assets, liabilities, revenue and expenses reported in the financial statements and accompanying notes and disclosure of contingent assets and liabilities within the financial statements. Estimates and assumptions are periodically evaluated and may be adjusted in future periods. Actual results could differ from those estimates. Share Repurchase Program – The Board of Directors has authorized the Company to repurchase in aggregate up to $ 100.0 million of the Company’s common stock. The program may be modified, suspended, or discontinued at any time without prior notice and as of November 30, 2024 had an expiration date of January 31, 2025 . Under the share repurchase program, shares of common stock may be purchased from time to time on the open market or through privately negotiated transactions. The timing and amount of purchases is based upon market conditions, securities law limitations and other factors. There were no share repurchases during the three months ended November 30, 2024. During the three months ended November 30, 2023 , the Company purchased a total of 38 thousand shares for $ 1.3 million. As of November 30, 2024, the amount remaining for repurchase under the share repurcha se program was $ 45.1 million. On January 8, 2025, the Board of Directors authorized the extension of the existing share repurchase program from January 31, 2025 to January 31, 2027 and renewed the amount remaining for repurchase to $ 100.0 million. Recent Accounting Pronouncements Improvements to Reportable Segment Disclosures In November 2023, the Financial Accounting Standards Board (FASB) issued Accounting Standard Update (ASU) 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures (ASU 2023-07), which requires disclosure of incremental segment information on an annual and interim basis, primarily through enhanced disclosures of significant segment expenses. ASU 2023-07 is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024 and requires retrospective application to all periods presented upon adoption. The Company is currently evaluating the impact that ASU 2023-07 will have on its consolidated financial statement disclosures. Improvements to Income Tax Disclosures In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures (ASU 2023-09), which requires disclosure of incremental income tax information within the rate reconciliation and expanded disclosures of income taxes paid, among other disclosure requirements. ASU 2023-09 is effective for fiscal years beginning after December 15, 2024. Early adoption is permitted. The Company is currently evaluating the impact that ASU 2023-09 will have on its consolidated financial statement disclosures. Disaggregation of Income Statement Expenses In November 2024, the FASB issued ASU 2024-03, Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses (ASU 2024-03), which requires disclosure of incremental income statement expense information on an annual and interim basis, primarily through enhanced disclosures of specified costs and expenses. ASU 2024-03 is effective for fiscal years beginning after December 15, 2026, and interim periods within fiscal years beginning after December 15, 2027. Early adoption is permitted. The Company is currently evaluating the impact that ASU 2024-03 will have on its consolidated financial statement disclosures.

Revenue Recognition

Revenue Recognition	3 Months Ended
	Nov. 30, 2024
Revenue from Contract with Customer [Abstract]
Revenue Recognition	Note 2 – Revenue Recognition Contract balances Contract assets primarily consist of work completed for railcar maintenance but not billed at the reporting date. Contract liabilities primarily consist of customer prepayments for new railcars and other management-type services, for which the Company has not yet satisfied the related performance obligations. The contract balances are as follows: (in millions) Balance sheet classification November 30, August 31, $ Contract assets Accounts receivable, net $ 4.4 $ 6.7 $ ( 2.3 ) Contract assets Inventories $ 9.8 $ 10.8 $ ( 1.0 ) Contract liabilities (1) Deferred revenue $ 42.2 $ 54.6 $ ( 12.4 ) (1) Contract liabilities balance includes deferred revenue within the scope of Revenue from Contracts with Customers (Topic 606). For the three months ended November 30, 2024 , the Company recognized $ 12.4 million of revenue that was included in Contract liabilities as of August 31, 2024. Performance obligations As of November 30, 2024 , the Company has entered into contracts with customers for which revenue has not yet been recognized. The following table outlines estimated revenue related to performance obligations wholly or partially unsatisfied, that the Company anticipates will be recognized in future periods. (in millions) November 30, Revenue type: Manufacturing – Railcar sales $ 2,264.7 Manufacturing – Sustainable conversions $ 28.4 Fleet management $ 144.0 Other $ 12.0 Based on current production and delivery schedules and existing contracts, approximately $ 1.3 billion of Railcar sales are expected to be recognized through 2025 while the remaining amount is expected to be recognized in 2026 and beyond. Sustainable conversions represent orders to modernize existing railcars and are expected to be recognized in 2025. Fleet management includes ma nagement and maintenance service contracts of which approximately $ 88.8 million is expected to be recognized through 2029 and the remaining amount is expected to be recognized through 2037.

Inventories

Inventories	3 Months Ended
	Nov. 30, 2024
Inventory Disclosure [Abstract]
Inventories	Note 3 – Inventories The following table summarizes the Company’s Inventories balance: (in millions) November 30, August 31, Manufacturing supplies and raw materials $ 491.5 $ 532.6 Work-in-process 129.4 152.0 Finished goods 139.1 92.6 Excess and obsolete adjustment ( 6.2 ) ( 6.3 ) $ 753.8 $ 770.9

Intangibles and Other Assets, n

Intangibles and Other Assets, net	3 Months Ended
	Nov. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Intangibles and Other Assets, net	Note 4 – Intangibles and Other Assets, net The following table summarizes the Company’s identifiable Intangibles and other assets, net balance: (in millions) November 30, August 31, Intangible assets subject to amortization: Customer relationships $ 87.5 $ 87.5 Accumulated amortization ( 72.8 ) ( 72.1 ) Other intangibles 41.8 43.3 Accumulated amortization ( 26.7 ) ( 27.2 ) 29.8 31.5 Intangible assets not subject to amortization 2.3 2.3 Prepaid and other assets 41.8 51.7 Operating lease right-of-use assets 61.5 65.1 Nonqualified savings plan investments 64.4 54.5 Debt issuance costs, net 5.1 4.8 Assets held for sale 0.3 0.3 Deferred tax assets 36.9 34.2 $ 242.1 $ 244.4

Revolving Notes

Revolving Notes	3 Months Ended
	Nov. 30, 2024
Debt Disclosure [Abstract]
Revolving Notes	Note 5 – Revolving Notes Senior secured credit facilities aggregated to $ 1.3 billion as of November 30, 2024. The Company had an aggregate of $ 248.7 million available to draw down under credit facilities as of November 30, 2024 . This amount consists of $ 139.5 million available on the North American credit facility, $ 18.2 million on the European credit facilities and $ 91.0 million on the Mexican credit facilities. Nonrecourse credit facilities GBX Leasing – As of November 30, 2024 , a $ 450.0 million nonrecourse warehouse credit facility existed to support the operations of GBX Leasing. Advances under this facility bear interest at the Secured Overnight Financing Rate (SOFR) plus 1.70 %. Interest rate swap agreements cover approximately 85 % of the outstanding balance to swap the floating interest rate to a fixed rate. The warehouse credit facility converts to a term loan in September 2027 and matures in September 2029 . Other credit facilities North America – As of November 30, 2024 , a $ 600.0 million revolving line of credit, maturing August 2026 , secured by substantially all the Company’s U.S. assets not otherwise pledged as security for term loans or the warehouse credit facility, existed to provide working capital and interim financing of equipment, principally for the Company’s U.S. and Mexican operations. Advances under this North American credit facility bear interest at SOFR plus 1.50 % plus 0.10 % as a SOFR adjustment or Prime plus 0.50 % depending on the type of borrowing. Available borrowings under the credit facility are generally based on defined levels of eligible inventory, receivables, property, plant and equipment and leased equipment, as well as total debt to consolidated capitalization and fixed charges coverage ratios. Europe – As of November 30, 2024 , lines of credit totaling $ 74.5 million secured by certain of the Company’s European assets, with variable rates that range from Warsaw Interbank Offered Rate (WIBOR) plus 1.10 % to WIBOR plus 1.40 % and Euro Interbank Offered Rate (EURIBOR) plus 1.90 %, were available for working capital needs of the Company’s European manufacturing operations. The European lines of credit in clude $ 31.7 million which is guaranteed by the Company. Euro pean credit facilities are regularly renewed. Currently, these European credit facilities have maturities that range from June 2025 through September 2026 . Mexico – As of November 30, 2024 , the Company’s Mexican railcar manufacturing operations had lines of credit totaling $ 166.0 million for working capital needs, $ 66.0 million of which the Company and its joint venture partner have each guaranteed 50 %. Advances under these facilities bear interest at variable rates that range from SOFR plus 2.22 % to SOFR plus 4.25 %. The Mexican credit facilities have maturities that range from February 2025 through January 2027 . Revolving notes consisted of the following balances: (in millions) November 30, August 31, Nonrecourse credit facility balances GBX Leasing $ 193.6 $ 194.9 Other credit facility balances North America 120.0 — Europe 56.3 46.7 Mexico 75.0 110.0 Total Revolving notes $ 444.9 $ 351.6 Outstanding commitments under the North American credit facility included letters of credit which totaled $ 6.6 million and $ 5.9 million as of November 30, 2024 and August 31, 2024 , respectively.

Accounts Payable and Accrued Li

Accounts Payable and Accrued Liabilities	3 Months Ended
	Nov. 30, 2024
Payables and Accruals [Abstract]
Accounts Payable and Accrued Liabilities	Note 6 – Accounts Payable and Accrued Liabilities (in millions) November 30, August 31, Trade payables $ 301.6 $ 370.7 Accrued payroll and related liabilities 152.6 170.5 Accrued liabilities and other 113.1 100.4 Operating lease liabilities 62.0 66.0 Accrued warranty 23.8 23.8 $ 653.1 $ 731.4

Warranty Accruals

Warranty Accruals	3 Months Ended
	Nov. 30, 2024
Guarantees and Product Warranties [Abstract]
Warranty Accruals	Note 7 – Warranty Accruals Warranty accruals are included in Accounts payable and accrued liabilities on the Condensed Consolidated Balance Sheets. Warranty accrual activity consisted of the following: Three months ended (in millions) 2024 2023 Balance at beginning of period $ 23.8 $ 25.6 Charged to cost of revenue, net 1.9 3.6 Payments ( 1.6 ) ( 5.6 ) Currency translation effect ( 0.3 ) 0.4 Balance at end of period $ 23.8 $ 24.0

Notes Payable, net

Notes Payable, net	3 Months Ended
	Nov. 30, 2024
Debt Disclosure [Abstract]
Notes Payable, net	Note 8 – Notes Payable, net (In millions) November 30, August 31, Leasing nonrecourse term loans $ 785.1 $ 792.1 Senior term debt 248.1 251.7 2.875 % Convertible senior notes, due 2028 373.8 373.8 Other notes payable 3.3 3.3 $ 1,410.3 $ 1,420.9 Debt discount and issuance costs ( 15.8 ) ( 16.7 ) $ 1,394.5 $ 1,404.2 Leasing nonrecourse term loans include: • Nonrecourse senior term debt, which is secured by a pool of leased railcars. The principal balance as of November 30, 2024 was $ 317.4 million. • Asset-backed term notes secured by a portfolio of leased railcars, which includes the term notes issued by GBX Leasing 2022-1 LLC. The principal balance as of November 30, 2024 was $ 467.7 million.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	3 Months Ended
	Nov. 30, 2024
Equity [Abstract]
Accumulated Other Comprehensive Loss	Note 9 – Accumulated Other Comprehensive Loss Accumulated other comprehensive loss, net of tax effect as appropriate, consisted of the following: (in millions) Unrealized Gain (Loss) on Derivative Financial Instruments Foreign Currency Translation Adjustment Other Accumulated Other Comprehensive Loss Balance, August 31, 2024 $ 15.2 $ ( 47.0 ) $ ( 2.2 ) $ ( 34.0 ) Other comprehensive gain (loss) before reclassifications 7.2 ( 11.3 ) — ( 4.1 ) Amounts reclassified from Accumulated other comprehensive loss ( 3.5 ) — — ( 3.5 ) Balance, November 30, 2024 $ 18.9 $ ( 58.3 ) $ ( 2.2 ) $ ( 41.6 ) The amounts reclassified out of Accumulated other comprehensive loss into the Condensed Consolidated Statements of Income, with financial statement caption, were as follows: Three months ended (in millions) 2024 2023 Financial Statement Caption Gain on derivative financial instruments: Foreign exchange contracts $ ( 0.4 ) $ ( 0.1 ) Revenue and Cost of revenue Interest rate swap contracts ( 4.0 ) ( 4.3 ) Interest and foreign exchange ( 4.4 ) ( 4.4 ) 0.9 0.9 Income tax expense $ ( 3.5 ) $ ( 3.5 )

Earnings Per Share

Earnings Per Share	3 Months Ended
	Nov. 30, 2024
Earnings Per Share [Abstract]
Earnings Per Share	Note 10 – Earnings Per Share The shares used in the computation of basic and diluted earnings per common share are reconciled as follows: Three months ended (In thousands) 2024 2023 Weighted average basic common shares outstanding 31,246 31,025 Dilutive effect of 2.875 % convertible notes due 2024 (1) N/A 826 Dilutive effect of 2.875 % convertible notes due 2028 (2) 43 — Dilutive effect of restricted stock units (3) 934 931 Weighted average diluted common shares outstanding 32,223 32,782 (1) The dilutive effect of the 2.875 % Convertible notes due 2024 was included for the three months ended November 30, 2023 under the “if converted” method as further discussed below. These notes were retired on February 1, 2024. (2) The dilutive effect of the 2.875 % Convertible notes due 2028 was excluded for the three months ended November 30, 2023 as the average stock price was less than the applicable conversion price and therefore was considered anti-dilutive. As these notes require cash settlement for the principal, only a premium is potentially dilutive under the "if converted" method as further discussed below. (3) Restricted stock units and restricted stock units subject to performance criteria, for which actual levels of performance above target have been achieved, are included in weighted average diluted common shares outstanding when the Company is in a net earnings position. Basic earnings per common share (EPS) is computed by dividing Net earnings attributable to Greenbrier by weighted average basic common shares outstanding. For the three months ended November 30, 2024 and November 30, 2023 , diluted EPS was calculated using the more dilutive of two methods. The first method includes the dilutive effect, using the treasury stock method, associated with restricted stock units and performance based restricted stock units subject to performance criteria, for which actual levels of performance above target have been achieved. The second method supplements the first by also including the “if converted” effect of the 2.875 % Convertible notes due 2024, during the periods in which they were outstanding, and shares underlying the 2.875 % Convertible notes due 2028, when there is a conversion premium. Under the “if converted” method, debt issuance and interest costs, both net of tax, associated with the convertible notes due 2024 are added back to net earnings and the share count is increased by the shares underlying the convertible notes. Three months ended (in millions, except number of shares which are reflected in thousands, and per share amounts) 2024 2023 Net earnings attributable to Greenbrier $ 55.3 $ 31.2 Weighted average basic common shares outstanding 31,246 31,025 Basic earnings per share $ 1.77 $ 1.00 Net earnings attributable to Greenbrier $ 55.3 $ 31.2 Add back: Interest and debt issuance costs on the 2.875 % convertible notes due 2024, net of tax — 0.3 Earnings before interest and debt issuance costs on the 2.875 % convertible notes due 2024 $ 55.3 $ 31.5 Weighted average diluted common shares outstanding 32,223 32,782 Diluted earnings per share $ 1.72 $ 0.96 (1) (1) Diluted earnings per share was calculated as follows: Earnings before interest and debt issuance costs on the 2.875 % convertible notes due 2024 Weighted average diluted common shares outstanding

Derivative Instruments

Derivative Instruments	3 Months Ended
	Nov. 30, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	Note 11 – Derivative Instruments Foreign operations give rise to market risks from changes in foreign currency exchange rates. Foreign exchange contracts with established financial institutions are utilized to hedge a portion of that risk. Interest rate swap agreements are used to reduce the impact of changes in interest rates on certain current and probable future debt. The Company’s foreign exchange contracts and interest rate swap agreements are designated as cash flow hedges, and therefore the effective portion of unrealized gains and losses is recorded in Accumulated other comprehensive income. At November 30, 2024 exchange rates, notional amounts of foreign exchange contracts for the purchase of Polish Zlotys and the sale of Euros; and the purchase of Mexican Pesos and the sale of U.S. Dollars aggregated to $ 214.0 million. The fair value of the contracts is included on the Condensed Consolidated Balance Sheets as Accounts payable and accrued liabilities when in a loss position, or as Accounts receivable, net when in a gain position. As the contracts mature at various dates through March 2027, any such gain or loss remaining will be recognized in Manufacturing Revenue or Cost of revenue along with the related transactions. In the event that the underlying transaction does not occur or does not occur in the period designated at the inception of the hedge, the amount classified in Accumulated other comprehensive loss would be reclassified to the results of operations in Interest and foreign exchange at the time of occurrence. At November 30, 2024 exchange rates, approximately $ 1.7 million would be reclassified to Cost of revenue in the next year. At November 30, 2024 , interest rate swap agreements maturing from Au gust 2027 through January 2032 had notional amounts that aggregated to $ 667.8 million. The fair value of the contracts is included on the Condensed Consolidated Balance Sheets in Accounts payable and accrued liabilities when in a loss position, or in Accounts receivable, net when in a gain position. As interest expense on the underlying debt is recogniz ed, amounts corresponding to the interest rate swap are reclassified from Accumulated other comprehensive loss and charged or credited to interest expense. At November 30, 2024 interest rates, approximately $ 9.5 million would be credited to interest expense in the next year. Fair Values of Derivative Instruments (in millions) Asset Derivatives Liability Derivatives November 30, August 31, November 30, August 31, Balance sheet location Fair Value Fair Value Balance sheet location Fair Value Fair Value Derivatives designated as hedging instruments Foreign exchange contracts Accounts receivable, net $ 3.3 $ 4.3 Accounts payable and accrued liabilities $ 1.1 $ 0.1 Interest rate swap contracts Accounts receivable, net 25.5 19.7 Accounts payable and accrued liabilities — 1.3 $ 28.8 $ 24.0 $ 1.1 $ 1.4 The Effect of Derivative Instruments on the Statements of Income (in millions) Three months ended November 30, 2024 and 2023 Derivatives in cash flow hedging relationships Location of gain (loss) recognized in income on derivatives Gain (loss) recognized in income on derivatives three months ended November 30, 2024 2023 Foreign exchange contracts Interest and foreign exchange $ ( 0.1 ) $ 0.2 Derivatives in cash flow hedging relationships Gain (loss) recognized in OCI on derivatives three months ended November 30, Location of gain (loss) reclassified from accumulated OCI into income Gain (loss) reclassified from accumulated OCI into income three months ended November 30, Location of gain (loss) on derivatives (amount excluded from effectiveness testing) Gain recognized on derivatives (amount excluded from effectiveness testing) three months ended November 30, 2024 2023 2024 2023 2024 2023 Foreign exchange contracts $ ( 1.3 ) $ 2.4 Revenue $ 0.5 $ 0.2 Revenue $ 0.8 $ 0.6 Foreign exchange contracts ( 0.4 ) ( 0.2 ) Cost of revenue ( 0.1 ) ( 0.1 ) Cost of revenue — 0.3 Interest rate swap contracts 10.9 3.1 Interest and foreign exchange 4.0 4.3 Interest and foreign exchange — — $ 9.2 $ 5.3 $ 4.4 $ 4.4 $ 0.8 $ 0.9 The following table presents the amounts in the Condensed Consolidated Statements of Income in which the effects of the cash flow hedges are recorded and the effects of the cash flow hedge activity on these line items for the three months ended November 30, 2024 and 2023: Three months ended 2024 2023 Total Amount of gain (loss) on cash flow hedge activity Total Amount of gain (loss) on cash flow hedge activity Revenue $ 875.9 $ 0.5 $ 808.8 $ 0.2 Cost of revenue $ 702.3 $ ( 0.1 ) $ 687.5 $ ( 0.1 ) Interest and foreign exchange $ 23.4 $ 4.0 $ 23.2 $ 4.3

Segment Information

Segment Information	3 Months Ended
	Nov. 30, 2024
Segment Reporting [Abstract]
Segment Information	Note 12 – Segment Information The Company operates in two reportable segments: Manufacturing and Leasing & Fleet Management. See Note 1 - Interim Financial Statements to the Condensed Consolidated Financial Statements for additional information on the change in the Company’s reportable segments effective September 1, 2024. Prior period segment results have been recast to reflect the Company’s new reportable segments. Performance is evaluated based on Earnings (loss) from operations. Corporate includes selling and administrative costs not directly related to goods and services and certain costs that are intertwined among segments due to our integrated business model. The Company does not allocate Interest and foreign exchange or Income tax expense for either external or internal reporting purposes. Intersegment sales and transfers are valued as if the sales or transfers were to third parties. Related revenue and margin are eliminated in consolidation and therefore are not included in consolidated results in the Company’s Condensed Consolidated Financial Statements. The information in the following tables is derived directly from the segments’ internal financial reports used for corporate management purposes. For the three months ended November 30, 2024: Revenue Earnings (loss) from operations (in millions) External Intersegment Total External Intersegment Total Manufacturing $ 820.4 $ 2.8 $ 823.2 $ 116.1 $ — $ 116.1 Leasing & Fleet Management 55.5 0.2 55.7 26.7 — 26.7 Eliminations — ( 3.0 ) ( 3.0 ) — — — Corporate — — — ( 31.0 ) — ( 31.0 ) $ 875.9 $ — $ 875.9 $ 111.8 $ — $ 111.8 For the three months ended November 30, 2023: Revenue Earnings (loss) from operations (in millions) External Intersegment Total External Intersegment Total Manufacturing $ 759.7 $ 58.7 $ 818.4 $ 64.9 $ 4.7 $ 69.6 Leasing & Fleet Management 49.1 0.2 49.3 26.3 — 26.3 Eliminations — ( 58.9 ) ( 58.9 ) — ( 4.7 ) ( 4.7 ) Corporate — — — ( 26.3 ) — ( 26.3 ) $ 808.8 $ — $ 808.8 $ 64.9 $ — $ 64.9 Total assets (in millions) November 30, August 31, Manufacturing $ 2,134.7 $ 2,172.4 Leasing & Fleet Management 1,775.3 1,633.6 Unallocated, including cash 377.5 448.5 $ 4,287.5 $ 4,254.5 Reconciliation of Earnings from operations to Earnings before income tax and earnings from unconsolidated affiliates: Three months ended (in millions) 2024 2023 Earnings from operations $ 111.8 $ 64.9 Interest and foreign exchange 23.4 23.2 Earnings before income tax and earnings from unconsolidated affiliates $ 88.4 $ 41.7

Leases

Leases	3 Months Ended
	Nov. 30, 2024
Leases [Abstract]
Leases	Note 13 – Leases Lessor Equipment on operating leases is reported net of accumulated depreciation of $ 101.8 million and $ 93.4 million as of November 30, 2024 and August 31, 2024 , respectively. Depreciation expense was $ 8.6 million for the three months ended November 30, 2024 and $ 7.8 million for the three months ended November 30, 2023. In addition, certain railcar equipment leased-in by the Company on operating leases is subleased to customers under non-cancelable operating leases with lease terms ranging from one to approximately twelve years . Operating lease rental revenues included in the Company’s Condensed Consolidated Statements of Income for the three months ended November 30, 2024 was $ 32.0 million, which included $ 4.3 million of revenue as a result of daily, monthly or car hire utilization arrangements. Operating lease rental revenues included in the Company’s Condensed Consolidated Statements of Income for the three months ended November 30, 2023 was $ 27.7 million, which included $ 5.4 million of revenue as a result of daily, monthly or car hire utilization arrangements. Aggregate minimum future amounts receivable under all non-cancelable operatin g leases and subleases at November 30, 2024, will mature as follows: (in millions) Remaining nine months of 2025 $ 79.3 2026 95.8 2027 85.1 2028 67.2 2029 50.2 Thereafter 90.3 $ 467.9 Lessee The Company leases railcars, real estate, and certain equipment under operating and, to a lesser extent, finance lease arrangements. As of and for the three months ended November 30, 2024 and 2023, finance leases were not a material component of the Company's lease portfolio. The Company’s real estate and equipment leases have remaining lease terms ranging from less than one year to 74 years , with some including options to extend up to 6 years . The Company recognizes a lease liability and corresponding right-of-use (ROU) asset based on the present value of lease payments. To determine the present value of lease payments, as most of its leases do not provide a readily determinable implicit rate, the Company’s incremental borrowing rate is used to discount the lease payments based on information available at each lease commencement date. The Company considers its recent debt issuances as well as publicly available data for instruments with similar characteristics when estimating its incremental borrowing rate. The components of operating lease costs were as follows: Three months ended (in millions) 2024 2023 Operating lease expense $ 4.3 $ 4.2 Short-term lease expense 1.5 1.7 Total $ 5.8 $ 5.9 Aggregate minimum future amounts payable under operating leases having initial or remaining non-cancelable terms at November 30, 2024, will mature as follows: (in millions) Remaining nine months of 2025 $ 10.4 2026 13.5 2027 10.7 2028 9.7 2029 7.9 Thereafter 15.8 Total lease payments $ 68.0 Less: Imputed interest ( 6.0 ) Total lease obligations $ 62.0 The table below presents additional information related to the Company’s leases: Weighted average remaining lease term (years): Operating leases 10.5 Weighted average discount rate: Operating leases 2.8 % Supplemental cash flow information related to leases were as follows: (in millions) Three months ended Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 4.2 ROU assets obtained in exchange for new operating lease liabilities $ 0.2

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Nov. 30, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 14 – Commitments and Contingencies Portland Harbor Superfund Site The Company’s former Portland, Oregon manufacturing facility (the Portland Property) is located adjacent to the Willamette River. In December 2000, the U.S. Environmental Protection Agency (EPA) classified portions of the Willamette River bed known as the Portland Harbor, including the portion fronting the Portland Property, as a federal "National Priority List" or "Superfund" site due to sediment contamination (the Portland Harbor Site). The Company and more than 140 other parties have received a "General Notice" of potential liability from the EPA relating to the Portland Harbor Site. The letter advised the Company that it may be liable for the costs of investigation and remediation (which liability may be joint and several with other potentially responsible parties) as well as for natural resource damages resulting from releases of hazardous substances to the site. Ten private and public entities, including the Company (the Lower Willamette Group or LWG), signed an Administrative Order on Consent (AOC) to perform a remedial investigation/feasibility study (RI/FS) of the Portland Harbor Site under EPA oversight, and several additional entities did not sign such consent, but nevertheless contributed financially to the effort. The EPA-mandated RI/FS was produced by the LWG and cost over $ 110 million during a 17-year period. The Company bore a percentage of the total costs incurred by the LWG in connection with the investigation. The Company’s aggregate expenditure during the 17-year period was not material. Some or all of any such outlay may be recoverable from other responsible parties. The EPA issued its Record of Decision (ROD) for the Portland Harbor Site on January 6, 2017 and accordingly on October 26, 2017, the AOC was terminated. The ROD does not address responsibility for the costs of remediation/cleanup, nor does it allocate such costs among the potentially responsible parties. The EPA's January 6, 2017 ROD identifies a cleanup remedy that the EPA estimates will take 13 years of active remediation, followed by 30 years of monitoring with an estimated undiscounted cost of $ 1.7 billion. The EPA typically expects its cost estimates to be accurate within a range of - 30 % to + 50 %, but this ROD states that changes in costs are likely to occur. The EPA has identified several so-called “Sediment Decision Units” within the ROD cleanup area. One of the units, RM9W, includes the nearshore area of the river sediments offshore and downstream of the Portland Property. It also includes a portion of the Portland Property's riverbank. The ROD does not break down total remediation costs by Sediment Decision Unit. The EPA requested that potentially responsible parties enter AOCs during 2019 agreeing to conduct remedial design studies. Some parties have signed AOCs, including one party with respect to RM9W which includes the area offshore of the Portland Property. The Company has not signed an AOC in connection with remedial design, but is assisting in funding a portion of the RM9W remedial design. Separate from the process described above, which focused on the type of remediation to be performed at the Portland Harbor Site and the schedule for such remediation, 96 parties, including the State of Oregon and the federal government, are participating in a non-judicial, mediated allocation process to try to allocate costs associated with remediation of the Portland Harbor Site. The Company will continue to participate in the allocation process. Approximately 110 additional parties signed tolling agreements related to such allocations. On April 23, 2009, the Company and the other AOC signatories filed suit against 69 other parties due to a possible limitations period for some such claims; Arkema Inc. et al v. A & C Foundry Products, Inc. et al , U.S. District Court, District of Oregon, Case #3:09-cv-453-PK. All but 12 of these parties elected to sign tolling agreements and be dismissed without prejudice, and the case has been stayed by the court until January 14, 2025. On November 20, 2024, the Company, as part of a group of about 60 recipients, received a “Special Notice” letter (“SNL”) from the EPA. The EPA routinely sends SNLs when it is ready to formally start negotiations with potentially responsible parties in an effort to reach a settlement to conduct or finance the remedial action. Such letters trigger the start of an enforcement moratorium during which time the EPA agrees not to unilaterally order any potentially responsible parties to conduct the remediation. Under this process, if settlement is reached, the settlement terms will normally be set out in a consent decree that is lodged in federal court. The terms of the SNL that the Company received are confidential. The EPA has publicly stated that it issued the SNL because it wants a seamless transition from the remedial-design phase to the remediation-implementation phase, that more potentially responsible parties may receive such a letter, and that the agency expects the settlement negotiations to take up to two years. Based on the investigations to date, the Company believes that it did not contribute in any material way to contaminants of concern in the river sediments or the damage of natural resources in the Portland Harbor Site and that the damage at RM9W precedes the Company’s ownership of the Portland Property. Because environmental investigations and remedial-design work are still underway, the allocation process is ongoing, and formal settlement negotiations with the EPA have only just begun and involve a large group of parties, sufficient information is currently not available to determine the Company’s liability, if any, for the cost of any required remediation or restoration of the Portland Harbor Site or to estimate a range of potential loss. Based on the results of the pending investigations and future assessments of natural resource damages, the Company may be required to incur costs associated with additional phases of investigation or remedial action, and may be liable for damages to natural resources. On January 30, 2017 the Confederated Tribes and Bands of Yakama Nation sued 33 parties including the Company as well as the federal government and the State of Oregon for costs it incurred in assessing alleged natural resource damages to the Columbia River from contaminants deposited in Portland Harbor. Confederated Tribes and Bands of the Yakama Nation v. Air Liquide America Corp., et al., U.S. Court for the District of Oregon Case No. 3i17-CV-00164-SB. The complaint does not specify the amount of damages the plaintiff will seek. The case has been stayed until January 14, 2025. Oregon Department of Environmental Quality (DEQ) Regulation of Portland Property The Company entered into a Voluntary Cleanup Agreement with the Oregon Department of Environmental Quality (DEQ) in which the Company agreed to conduct an investigation of whether, and to what extent, past or present operations at the Portland Property may have released hazardous substances into the environment. The Company has also signed an Order on Consent with the DEQ to finalize the investigation of potential onsite sources of contamination that may have a release pathway to the Willamette River. The Company’s aggregate expenditure has not been material, however it could incur significant expenses for remediation. Some or all of any such outlay may be recoverable from other responsible parties. Sale of Portland Property The Company sold the Portland Property in May 2023, but remains potentially liable with respect to the above matters. Any of these matters could adversely affect the Company's business and Consolidated Financial Statements. However, any contamination or exacerbation of contamination that occurs after the sale of the property will be the liability of the current and future owners and operators of the Portland Property. Other Litigation, Commitments and Contingencies From time to time, the Company is involved as a defendant in litigation in the ordinary course of business, the outcomes of which cannot be predicted with certainty. While the ultimate outcome of such legal proceedings cannot be determined at this time, the Company believes that the resolution of pending litigation will not have a material adverse effect on the Company's Consolidated Financial Statements. As of November 30, 2024, the Company had outstanding letters of credit aggregating to $ 6.6 million ass ociated with performance guarantees, facility leases and workers compensation insurance.

Fair Value Measures

Fair Value Measures	3 Months Ended
	Nov. 30, 2024
Fair Value Disclosures [Abstract]
Fair Value Measures	Note 15 – Fair Value Measures Certain assets and liabilities are reported at fair value on either a recurring or nonrecurring basis. Fair value, for this disclosure, is defined as an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants, under a three-tier fair value hierarchy that prioritizes the inputs used in measuring fair value as follows: Level 1 - observable inputs such as unadjusted quoted prices in active markets for identical instruments; Level 2 - inputs, other than the quoted market prices in active markets for similar instruments, which are observable, either directly or indirectly; and Level 3 - unobservable inputs for which there is little or no market data available, which require the reporting entity to develop its own assumptions. Assets and liabilities measured at fair value on a recurring basis as of November 30, 2024 were: (in millions) Total Level 1 Level 2 (1) Level 3 Assets: Derivative financial instruments $ 28.8 $ — $ 28.8 $ — Nonqualified savings plan investments 64.4 64.4 — — Cash equivalents 151.2 151.2 — — $ 244.4 $ 215.6 $ 28.8 $ — Liabilities: Derivative financial instruments $ 1.1 $ — $ 1.1 $ — Assets and liabilities measured at fair value on a recurring basis as of August 31, 2024 were: (in millions) Total Level 1 Level 2 (1) Level 3 Assets: Derivative financial instruments $ 24.0 $ — $ 24.0 $ — Nonqualified savings plan investments 54.5 54.5 — — Cash equivalents 195.3 195.3 — — $ 273.8 $ 249.8 $ 24.0 $ — Liabilities: Derivative financial instruments $ 1.4 $ — $ 1.4 $ — (1) Level 2 assets and liabilities include derivative financial instruments that are valued based on observable inputs. See Note 11 - Derivative Instruments to the Condensed Consolidated Financial Statements for further discussion.

Related Party Transactions

Related Party Transactions	3 Months Ended
	Nov. 30, 2024
Related Party Transactions [Abstract]
Related Party Transactions	Note 16 – Related Party Transactions The Company has a 41.9 % interest in Axis, LLC (Axis), a joint venture. The Company purchase d $ 3.1 million and $ 2.3 million of railcar components from Axis for the three months ended November 30, 2024 and 2023 , respectively.

Interim Financial Statements (P

Interim Financial Statements (Policies)	3 Months Ended
	Nov. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Recent Accounting Pronouncements	Recent Accounting Pronouncements Improvements to Reportable Segment Disclosures In November 2023, the Financial Accounting Standards Board (FASB) issued Accounting Standard Update (ASU) 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures (ASU 2023-07), which requires disclosure of incremental segment information on an annual and interim basis, primarily through enhanced disclosures of significant segment expenses. ASU 2023-07 is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024 and requires retrospective application to all periods presented upon adoption. The Company is currently evaluating the impact that ASU 2023-07 will have on its consolidated financial statement disclosures. Improvements to Income Tax Disclosures In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures (ASU 2023-09), which requires disclosure of incremental income tax information within the rate reconciliation and expanded disclosures of income taxes paid, among other disclosure requirements. ASU 2023-09 is effective for fiscal years beginning after December 15, 2024. Early adoption is permitted. The Company is currently evaluating the impact that ASU 2023-09 will have on its consolidated financial statement disclosures. Disaggregation of Income Statement Expenses In November 2024, the FASB issued ASU 2024-03, Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses (ASU 2024-03), which requires disclosure of incremental income statement expense information on an annual and interim basis, primarily through enhanced disclosures of specified costs and expenses. ASU 2024-03 is effective for fiscal years beginning after December 15, 2026, and interim periods within fiscal years beginning after December 15, 2027. Early adoption is permitted. The Company is currently evaluating the impact that ASU 2024-03 will have on its consolidated financial statement disclosures.

Revenue Recognition (Tables)

Revenue Recognition (Tables)	3 Months Ended
	Nov. 30, 2024
Revenue from Contract with Customer [Abstract]
Summary of Contract Balances	The contract balances are as follows: (in millions) Balance sheet classification November 30, August 31, $ Contract assets Accounts receivable, net $ 4.4 $ 6.7 $ ( 2.3 ) Contract assets Inventories $ 9.8 $ 10.8 $ ( 1.0 ) Contract liabilities (1) Deferred revenue $ 42.2 $ 54.6 $ ( 12.4 ) (1) Contract liabilities balance includes deferred revenue within the scope of Revenue from Contracts with Customers (Topic 606).
Summary of Estimated Revenue Related to Performance Obligations Wholly or Partially Unsatisfied	The following table outlines estimated revenue related to performance obligations wholly or partially unsatisfied, that the Company anticipates will be recognized in future periods. (in millions) November 30, Revenue type: Manufacturing – Railcar sales $ 2,264.7 Manufacturing – Sustainable conversions $ 28.4 Fleet management $ 144.0 Other $ 12.0

Inventories (Tables)

Inventories (Tables)	3 Months Ended
	Nov. 30, 2024
Inventory Disclosure [Abstract]
Components of Inventories	The following table summarizes the Company’s Inventories balance: (in millions) November 30, August 31, Manufacturing supplies and raw materials $ 491.5 $ 532.6 Work-in-process 129.4 152.0 Finished goods 139.1 92.6 Excess and obsolete adjustment ( 6.2 ) ( 6.3 ) $ 753.8 $ 770.9

Intangibles and Other Assets,_2

Intangibles and Other Assets, net (Tables)	3 Months Ended
	Nov. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Identifiable Intangibles and Other Assets, Net	The following table summarizes the Company’s identifiable Intangibles and other assets, net balance: (in millions) November 30, August 31, Intangible assets subject to amortization: Customer relationships $ 87.5 $ 87.5 Accumulated amortization ( 72.8 ) ( 72.1 ) Other intangibles 41.8 43.3 Accumulated amortization ( 26.7 ) ( 27.2 ) 29.8 31.5 Intangible assets not subject to amortization 2.3 2.3 Prepaid and other assets 41.8 51.7 Operating lease right-of-use assets 61.5 65.1 Nonqualified savings plan investments 64.4 54.5 Debt issuance costs, net 5.1 4.8 Assets held for sale 0.3 0.3 Deferred tax assets 36.9 34.2 $ 242.1 $ 244.4

Revolving Notes (Tables)

Revolving Notes (Tables)	3 Months Ended
	Nov. 30, 2024
Debt Disclosure [Abstract]
Schedule of Credit Facility Balances	Revolving notes consisted of the following balances: (in millions) November 30, August 31, Nonrecourse credit facility balances GBX Leasing $ 193.6 $ 194.9 Other credit facility balances North America 120.0 — Europe 56.3 46.7 Mexico 75.0 110.0 Total Revolving notes $ 444.9 $ 351.6

Accounts Payable and Accrued _2

Accounts Payable and Accrued Liabilities (Tables)	3 Months Ended
	Nov. 30, 2024
Payables and Accruals [Abstract]
Accounts Payable and Accrued Liabilities	(in millions) November 30, August 31, Trade payables $ 301.6 $ 370.7 Accrued payroll and related liabilities 152.6 170.5 Accrued liabilities and other 113.1 100.4 Operating lease liabilities 62.0 66.0 Accrued warranty 23.8 23.8 $ 653.1 $ 731.4

Warranty Accruals (Tables)

Warranty Accruals (Tables)	3 Months Ended
	Nov. 30, 2024
Guarantees and Product Warranties [Abstract]
Warranty Accrual Activity	Warranty accrual activity consisted of the following: Three months ended (in millions) 2024 2023 Balance at beginning of period $ 23.8 $ 25.6 Charged to cost of revenue, net 1.9 3.6 Payments ( 1.6 ) ( 5.6 ) Currency translation effect ( 0.3 ) 0.4 Balance at end of period $ 23.8 $ 24.0

Notes Payable, net (Tables)

Notes Payable, net (Tables)	3 Months Ended
	Nov. 30, 2024
Debt Disclosure [Abstract]
Notes Payable, Net	(In millions) November 30, August 31, Leasing nonrecourse term loans $ 785.1 $ 792.1 Senior term debt 248.1 251.7 2.875 % Convertible senior notes, due 2028 373.8 373.8 Other notes payable 3.3 3.3 $ 1,410.3 $ 1,420.9 Debt discount and issuance costs ( 15.8 ) ( 16.7 ) $ 1,394.5 $ 1,404.2

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss (Tables)	3 Months Ended
	Nov. 30, 2024
Equity [Abstract]
Components of Accumulated Other Comprehensive Loss, Net of Tax	Accumulated other comprehensive loss, net of tax effect as appropriate, consisted of the following: (in millions) Unrealized Gain (Loss) on Derivative Financial Instruments Foreign Currency Translation Adjustment Other Accumulated Other Comprehensive Loss Balance, August 31, 2024 $ 15.2 $ ( 47.0 ) $ ( 2.2 ) $ ( 34.0 ) Other comprehensive gain (loss) before reclassifications 7.2 ( 11.3 ) — ( 4.1 ) Amounts reclassified from Accumulated other comprehensive loss ( 3.5 ) — — ( 3.5 ) Balance, November 30, 2024 $ 18.9 $ ( 58.3 ) $ ( 2.2 ) $ ( 41.6 )
Amounts Reclassified out of Accumulated Other Comprehensive Loss	The amounts reclassified out of Accumulated other comprehensive loss into the Condensed Consolidated Statements of Income, with financial statement caption, were as follows: Three months ended (in millions) 2024 2023 Financial Statement Caption Gain on derivative financial instruments: Foreign exchange contracts $ ( 0.4 ) $ ( 0.1 ) Revenue and Cost of revenue Interest rate swap contracts ( 4.0 ) ( 4.3 ) Interest and foreign exchange ( 4.4 ) ( 4.4 ) 0.9 0.9 Income tax expense $ ( 3.5 ) $ ( 3.5 )

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Nov. 30, 2024
Earnings Per Share [Abstract]
Reconciliation of Shares Used in Computation of Basic and Diluted Earnings Per Share	The shares used in the computation of basic and diluted earnings per common share are reconciled as follows: Three months ended (In thousands) 2024 2023 Weighted average basic common shares outstanding 31,246 31,025 Dilutive effect of 2.875 % convertible notes due 2024 (1) N/A 826 Dilutive effect of 2.875 % convertible notes due 2028 (2) 43 — Dilutive effect of restricted stock units (3) 934 931 Weighted average diluted common shares outstanding 32,223 32,782 (1) The dilutive effect of the 2.875 % Convertible notes due 2024 was included for the three months ended November 30, 2023 under the “if converted” method as further discussed below. These notes were retired on February 1, 2024. (2) The dilutive effect of the 2.875 % Convertible notes due 2028 was excluded for the three months ended November 30, 2023 as the average stock price was less than the applicable conversion price and therefore was considered anti-dilutive. As these notes require cash settlement for the principal, only a premium is potentially dilutive under the "if converted" method as further discussed below. (3) Restricted stock units and restricted stock units subject to performance criteria, for which actual levels of performance above target have been achieved, are included in weighted average diluted common shares outstanding when the Company is in a net earnings position.
Approach to Calculate Diluted Earnings per Share	Three months ended (in millions, except number of shares which are reflected in thousands, and per share amounts) 2024 2023 Net earnings attributable to Greenbrier $ 55.3 $ 31.2 Weighted average basic common shares outstanding 31,246 31,025 Basic earnings per share $ 1.77 $ 1.00 Net earnings attributable to Greenbrier $ 55.3 $ 31.2 Add back: Interest and debt issuance costs on the 2.875 % convertible notes due 2024, net of tax — 0.3 Earnings before interest and debt issuance costs on the 2.875 % convertible notes due 2024 $ 55.3 $ 31.5 Weighted average diluted common shares outstanding 32,223 32,782 Diluted earnings per share $ 1.72 $ 0.96 (1) (1) Diluted earnings per share was calculated as follows: Earnings before interest and debt issuance costs on the 2.875 % convertible notes due 2024 Weighted average diluted common shares outstanding

Derivative Instruments (Tables)

Derivative Instruments (Tables)	3 Months Ended
	Nov. 30, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Fair Values of Derivative Instruments	Fair Values of Derivative Instruments (in millions) Asset Derivatives Liability Derivatives November 30, August 31, November 30, August 31, Balance sheet location Fair Value Fair Value Balance sheet location Fair Value Fair Value Derivatives designated as hedging instruments Foreign exchange contracts Accounts receivable, net $ 3.3 $ 4.3 Accounts payable and accrued liabilities $ 1.1 $ 0.1 Interest rate swap contracts Accounts receivable, net 25.5 19.7 Accounts payable and accrued liabilities — 1.3 $ 28.8 $ 24.0 $ 1.1 $ 1.4
Effect of Derivative Instruments on the Statements of Operations	The Effect of Derivative Instruments on the Statements of Income (in millions) Three months ended November 30, 2024 and 2023 Derivatives in cash flow hedging relationships Location of gain (loss) recognized in income on derivatives Gain (loss) recognized in income on derivatives three months ended November 30, 2024 2023 Foreign exchange contracts Interest and foreign exchange $ ( 0.1 ) $ 0.2 Derivatives in cash flow hedging relationships Gain (loss) recognized in OCI on derivatives three months ended November 30, Location of gain (loss) reclassified from accumulated OCI into income Gain (loss) reclassified from accumulated OCI into income three months ended November 30, Location of gain (loss) on derivatives (amount excluded from effectiveness testing) Gain recognized on derivatives (amount excluded from effectiveness testing) three months ended November 30, 2024 2023 2024 2023 2024 2023 Foreign exchange contracts $ ( 1.3 ) $ 2.4 Revenue $ 0.5 $ 0.2 Revenue $ 0.8 $ 0.6 Foreign exchange contracts ( 0.4 ) ( 0.2 ) Cost of revenue ( 0.1 ) ( 0.1 ) Cost of revenue — 0.3 Interest rate swap contracts 10.9 3.1 Interest and foreign exchange 4.0 4.3 Interest and foreign exchange — — $ 9.2 $ 5.3 $ 4.4 $ 4.4 $ 0.8 $ 0.9
Effects of Cash Flow Hedges Included in Statements of Operations	The following table presents the amounts in the Condensed Consolidated Statements of Income in which the effects of the cash flow hedges are recorded and the effects of the cash flow hedge activity on these line items for the three months ended November 30, 2024 and 2023: Three months ended 2024 2023 Total Amount of gain (loss) on cash flow hedge activity Total Amount of gain (loss) on cash flow hedge activity Revenue $ 875.9 $ 0.5 $ 808.8 $ 0.2 Cost of revenue $ 702.3 $ ( 0.1 ) $ 687.5 $ ( 0.1 ) Interest and foreign exchange $ 23.4 $ 4.0 $ 23.2 $ 4.3

Segment Information (Tables)

Segment Information (Tables)	3 Months Ended
	Nov. 30, 2024
Segment Reporting [Abstract]
Segments Internal Financial Reports	The information in the following tables is derived directly from the segments’ internal financial reports used for corporate management purposes. For the three months ended November 30, 2024: Revenue Earnings (loss) from operations (in millions) External Intersegment Total External Intersegment Total Manufacturing $ 820.4 $ 2.8 $ 823.2 $ 116.1 $ — $ 116.1 Leasing & Fleet Management 55.5 0.2 55.7 26.7 — 26.7 Eliminations — ( 3.0 ) ( 3.0 ) — — — Corporate — — — ( 31.0 ) — ( 31.0 ) $ 875.9 $ — $ 875.9 $ 111.8 $ — $ 111.8 For the three months ended November 30, 2023: Revenue Earnings (loss) from operations (in millions) External Intersegment Total External Intersegment Total Manufacturing $ 759.7 $ 58.7 $ 818.4 $ 64.9 $ 4.7 $ 69.6 Leasing & Fleet Management 49.1 0.2 49.3 26.3 — 26.3 Eliminations — ( 58.9 ) ( 58.9 ) — ( 4.7 ) ( 4.7 ) Corporate — — — ( 26.3 ) — ( 26.3 ) $ 808.8 $ — $ 808.8 $ 64.9 $ — $ 64.9 Total assets (in millions) November 30, August 31, Manufacturing $ 2,134.7 $ 2,172.4 Leasing & Fleet Management 1,775.3 1,633.6 Unallocated, including cash 377.5 448.5 $ 4,287.5 $ 4,254.5
Reconciliation of Earnings from Operations to Earnings Before Income Tax and Earnings from Unconsolidated Affiliates	Reconciliation of Earnings from operations to Earnings before income tax and earnings from unconsolidated affiliates: Three months ended (in millions) 2024 2023 Earnings from operations $ 111.8 $ 64.9 Interest and foreign exchange 23.4 23.2 Earnings before income tax and earnings from unconsolidated affiliates $ 88.4 $ 41.7

Leases (Tables)

Leases (Tables)	3 Months Ended
	Nov. 30, 2024
Leases [Abstract]
Aggregate Minimum Future Amounts Receivable Under All Non-Cancelable Operating Leases and Subleases	Aggregate minimum future amounts receivable under all non-cancelable operatin g leases and subleases at November 30, 2024, will mature as follows: (in millions) Remaining nine months of 2025 $ 79.3 2026 95.8 2027 85.1 2028 67.2 2029 50.2 Thereafter 90.3 $ 467.9
Components of Operating Lease Costs	The components of operating lease costs were as follows: Three months ended (in millions) 2024 2023 Operating lease expense $ 4.3 $ 4.2 Short-term lease expense 1.5 1.7 Total $ 5.8 $ 5.9
Aggregate Minimum Future Amounts Payable Under Operating Leases	Aggregate minimum future amounts payable under operating leases having initial or remaining non-cancelable terms at November 30, 2024, will mature as follows: (in millions) Remaining nine months of 2025 $ 10.4 2026 13.5 2027 10.7 2028 9.7 2029 7.9 Thereafter 15.8 Total lease payments $ 68.0 Less: Imputed interest ( 6.0 ) Total lease obligations $ 62.0
Additional Information Related to Company's Leases	The table below presents additional information related to the Company’s leases: Weighted average remaining lease term (years): Operating leases 10.5 Weighted average discount rate: Operating leases 2.8 %
Supplemental Cash Flow Information Related to Leases	Supplemental cash flow information related to leases were as follows: (in millions) Three months ended Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 4.2 ROU assets obtained in exchange for new operating lease liabilities $ 0.2

Fair Value Measures (Tables)

Fair Value Measures (Tables)	3 Months Ended
	Nov. 30, 2024
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value on Recurring Basis	Assets and liabilities measured at fair value on a recurring basis as of November 30, 2024 were: (in millions) Total Level 1 Level 2 (1) Level 3 Assets: Derivative financial instruments $ 28.8 $ — $ 28.8 $ — Nonqualified savings plan investments 64.4 64.4 — — Cash equivalents 151.2 151.2 — — $ 244.4 $ 215.6 $ 28.8 $ — Liabilities: Derivative financial instruments $ 1.1 $ — $ 1.1 $ — Assets and liabilities measured at fair value on a recurring basis as of August 31, 2024 were: (in millions) Total Level 1 Level 2 (1) Level 3 Assets: Derivative financial instruments $ 24.0 $ — $ 24.0 $ — Nonqualified savings plan investments 54.5 54.5 — — Cash equivalents 195.3 195.3 — — $ 273.8 $ 249.8 $ 24.0 $ — Liabilities: Derivative financial instruments $ 1.4 $ — $ 1.4 $ — (1) Level 2 assets and liabilities include derivative financial instruments that are valued based on observable inputs. See Note 11 - Derivative Instruments to the Condensed Consolidated Financial Statements for further discussion.

Interim Financial Statements -

Interim Financial Statements - Additional Information (Detail)		3 Months Ended
	Jan. 08, 2025 USD ($)	Nov. 30, 2024 USD ($) Segment shares	Nov. 30, 2023 USD ($) shares
Equity Class Of Treasury Stock [Line Items]
Number of reportable segments | Segment		2
Authorized amount under stock repurchase program		$ 100,000,000
Remaining authorized repurchase amount		$ 45,100,000
Number of shares repurchased | shares		0	38,000
Number of shares repurchased amount			$ 1,300,000
Repurchase program expiration date		Jan. 31, 2025
Subsequent Events
Equity Class Of Treasury Stock [Line Items]
Remaining authorized repurchase amount	$ 100,000,000
Repurchase program expiration date	Jan. 31, 2027
Manufacturing
Equity Class Of Treasury Stock [Line Items]
Number of reportable segments | Segment		1

Revenue Recognition - Summary o

Revenue Recognition - Summary of Contract Balances (Detail) - USD ($) $ in Millions		3 Months Ended
		Nov. 30, 2024	Aug. 31, 2024
Contract With Customer Asset And Liability [Line Items]
Contract liabilities	[1]	$ 42.2	$ 54.6
Change in contract assets, accounts receivable, net		(2.3)
Change in contract assets, inventories		(1)
Change in contract liabilities	[1]	(12.4)
Accounts Receivable, Net
Contract With Customer Asset And Liability [Line Items]
Contract assets		4.4	6.7
Inventories
Contract With Customer Asset And Liability [Line Items]
Contract assets		$ 9.8	$ 10.8
[1] Contract liabilities balance includes deferred revenue within the scope of Revenue from Contracts with Customers (Topic 606).

Revenue Recognition - Additiona

Revenue Recognition - Additional information (Detail) $ in Millions	3 Months Ended
	Nov. 30, 2024 USD ($)
Revenue From Contract With Customers [Line Items]
Revenue recognized from contract with customers liability	$ 12.4

Revenue Recognition - Additio_2

Revenue Recognition - Additional information (Detail1) $ in Millions	Nov. 30, 2024 USD ($)
Rail Cars [Member] | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-12-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Expected revenue to be recognized	$ 1,300
Expected revenue to be recognized period	9 months
Fleet management
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Expected revenue to be recognized	$ 144
Fleet management | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-12-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Expected revenue to be recognized	$ 88.8
Expected revenue to be recognized period	4 years 9 months

Revenue Recognition - Summary_2

Revenue Recognition - Summary of Estimated Revenue Related to Performance Obligations (Detail) $ in Millions	Nov. 30, 2024 USD ($)
Fleet management
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Revenue type 1	$ 144
Other
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Revenue type 1	12
Manufacturing | Railcar sales
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Revenue type 1	2,264.7
Manufacturing | Sustainable conversions
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Revenue type 1	$ 28.4

Inventories - Components of Inv

Inventories - Components of Inventories (Detail) - USD ($) $ in Millions	Nov. 30, 2024	Aug. 31, 2024
Inventory Disclosure [Abstract]
Manufacturing supplies and raw materials	$ 491.5	$ 532.6
Work-in-process	129.4	152
Finished goods	139.1	92.6
Excess and obsolete adjustment	(6.2)	(6.3)
Inventories	$ 753.8	$ 770.9

Intangibles and Other Assets,_3

Intangibles and Other Assets, Net - Identifiable Intangibles and Other Assets, Net (Detail) - USD ($) $ in Millions	Nov. 30, 2024	Aug. 31, 2024
Intangibles and Other Assets by Major Class [Line Items]
Finite-Lived Intangible Assets, Net, Total	$ 29.8	$ 31.5
Intangible assets not subject to amortization	2.3	2.3
Prepaid and other assets	41.8	51.7
Operating lease ROU assets	$ 61.5	$ 65.1
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Total Intangibles and other assets, net	Total Intangibles and other assets, net
Nonqualified savings plan investments	$ 64.4	$ 54.5
Debt issuance costs, net	5.1	4.8
Assets held for sale	0.3	0.3
Deferred tax assets	36.9	34.2
Total Intangibles and other assets, net	242.1	244.4
Customer Relationships
Intangibles and Other Assets by Major Class [Line Items]
Finite lived intangible assets gross	87.5	87.5
Accumulated amortization	(72.8)	(72.1)
Other Intangible Assets
Intangibles and Other Assets by Major Class [Line Items]
Finite lived intangible assets gross	41.8	43.3
Accumulated amortization	$ (26.7)	$ (27.2)

Goodwill - Additional Informati

Goodwill - Additional Information (Detail) - USD ($) $ in Millions	Nov. 30, 2024	Aug. 31, 2024
Goodwill [Line Items]
Goodwill	$ 127.4	$ 128.5

Revolving Notes - Additional In

Revolving Notes - Additional Information (Detail) - USD ($)	3 Months Ended
	Nov. 30, 2024	Aug. 31, 2024
Line of Credit Facility [Line Items]
Long-term line of credit	$ 444,900,000	$ 351,600,000
European
Line of Credit Facility [Line Items]
Line of credit, guaranteed amount	31,700,000
Mexican
Line of Credit Facility [Line Items]
Line of credit facility maximum capacity	$ 66,000,000
Minimum | European
Line of Credit Facility [Line Items]
Line of credit maturity date	2025-06
Minimum | Mexican
Line of Credit Facility [Line Items]
Line of credit facility borrowings outstanding due period	2025-02
Maximum | European
Line of Credit Facility [Line Items]
Line of credit maturity date	2026-09
Maximum | Mexican
Line of Credit Facility [Line Items]
Line of credit facility borrowings outstanding due period	2027-01
WIBOR | Minimum | European
Line of Credit Facility [Line Items]
Debt instrument, percentage points added to the reference rate	1.10%
WIBOR | Maximum | European
Line of Credit Facility [Line Items]
Debt instrument, percentage points added to the reference rate	1.40%
EURIBOR | European
Line of Credit Facility [Line Items]
Debt instrument, percentage points added to the reference rate	1.90%
Senior Secured Credit Facilities
Line of Credit Facility [Line Items]
Line of credit facility maximum capacity	$ 1,300,000,000
Letter of credit facility outstanding amount	6,600,000	5,900,000
Senior Secured Credit Facilities | North American
Line of Credit Facility [Line Items]
Long-term line of credit	120,000,000	0
Senior Secured Credit Facilities | European
Line of Credit Facility [Line Items]
Long-term line of credit	56,300,000	46,700,000
Senior Secured Credit Facilities | Mexican
Line of Credit Facility [Line Items]
Long-term line of credit	75,000,000	110,000,000
Committed Credit Facilities
Line of Credit Facility [Line Items]
Aggregate amount available to draw down	248,700,000
Committed Credit Facilities | North American
Line of Credit Facility [Line Items]
Aggregate amount available to draw down	139,500,000
Committed Credit Facilities | European
Line of Credit Facility [Line Items]
Aggregate amount available to draw down	18,200,000
Committed Credit Facilities | Mexican
Line of Credit Facility [Line Items]
Aggregate amount available to draw down	91,000,000
Revolving Line of Credit, 1st Component of Senior Secured Credit Facilities | North American
Line of Credit Facility [Line Items]
Line of credit facility maximum capacity	$ 600,000,000
Line of credit maturity date	2026-08
Revolving Line of Credit, 1st Component of Senior Secured Credit Facilities | European
Line of Credit Facility [Line Items]
Line of credit facility maximum capacity	$ 74,500,000
Revolving Line of Credit, 1st Component of Senior Secured Credit Facilities | Prime Rate | North American
Line of Credit Facility [Line Items]
Debt instrument, percentage points added to the reference rate	0.50%
Revolving Line of Credit, 1st Component of Senior Secured Credit Facilities | SOFR | North American
Line of Credit Facility [Line Items]
Debt instrument, percentage points added to the reference rate	1.50%
Revolving Line of Credit, 1st Component of Senior Secured Credit Facilities | SOFR Adjustment | North American
Line of Credit Facility [Line Items]
Debt instrument, percentage points added to the reference rate	0.10%
GBX Leasing
Line of Credit Facility [Line Items]
Line of credit facility maximum capacity	$ 450,000,000
Line of credit maturity date	2029-09
Long-term line of credit	$ 193,600,000	$ 194,900,000
Notional covering percentage of outstanding balance	85%
GBX Leasing | SOFR
Line of Credit Facility [Line Items]
Debt instrument, percentage points added to the reference rate	1.70%
Mexican Railcar Manufacturing Joint Venture Line of Credit, 4 Component of Senior Secured Credit Facilities | Mexican
Line of Credit Facility [Line Items]
Line of credit facility maximum capacity	$ 166,000,000
Mexican Railcar Manufacturing Operations Line of Credit 1, 3rd Component of Senior Secured Credit Facilities | LIBOR | Mexican
Line of Credit Facility [Line Items]
Debt instrument, percentage points added to the reference rate	4.25%
Mexican Railcar Manufacturing Operations Line of Credit 2, 3rd Component of Senior Secured Credit Facilities | SOFR | Mexican
Line of Credit Facility [Line Items]
Debt instrument, percentage points added to the reference rate	2.22%
Mexican Railcar Manufacturing Operations Line of Credit 3, 3rd Component of Senior Secured Credit Facilities | Mexican
Line of Credit Facility [Line Items]
Joint venture partner each guaranteed percentage	50%

Revolving Notes - Schedule of C

Revolving Notes - Schedule of Credit Facility Balances (Detail) - USD ($) $ in Millions	Nov. 30, 2024	Aug. 31, 2024
Line of Credit Facility [Line Items]
Revolving notes	$ 444.9	$ 351.6
Revolving Notes | North America
Line of Credit Facility [Line Items]
Revolving notes	120	0
Revolving Notes | Europe
Line of Credit Facility [Line Items]
Revolving notes	56.3	46.7
Revolving Notes | Mexico
Line of Credit Facility [Line Items]
Revolving notes	75	110
GBX Leasing
Line of Credit Facility [Line Items]
Revolving notes	$ 193.6	$ 194.9

Accounts Payable and Accrued _3

Accounts Payable and Accrued Liabilities - Accounts Payable and Accrued Liabilities (Detail) - USD ($) $ in Millions	Nov. 30, 2024	Aug. 31, 2024	Nov. 30, 2023	Aug. 31, 2023
Payables and Accruals [Abstract]
Trade payables	$ 301.6	$ 370.7
Accrued payroll and related liabilities	152.6	170.5
Accrued liabilities and other	113.1	100.4
Operating lease liabilities	$ 62	$ 66
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Accounts payable and accrued liabilities	Accounts payable and accrued liabilities
Accrued warranty	$ 23.8	$ 23.8	$ 24	$ 25.6
Accounts payable and accrued liabilities	$ 653.1	$ 731.4

Warranty Accruals - Warranty Ac

Warranty Accruals - Warranty Accrual Activity (Detail) - USD ($) $ in Millions	3 Months Ended
	Nov. 30, 2024	Nov. 30, 2023
Guarantees and Product Warranties [Abstract]
Balance at beginning of period	$ 23.8	$ 25.6
Charged to cost of revenue, net	1.9	3.6
Payments	(1.6)	(5.6)
Currency translation effect	(0.3)	0.4
Balance at end of period	$ 23.8	$ 24

Notes Payable, Net - Notes Paya

Notes Payable, Net - Notes Payable, Net (Detail) - USD ($) $ in Millions	Nov. 30, 2024	Aug. 31, 2024
Debt Instrument [Line Items]
Other notes payable	$ 3.3	$ 3.3
Notes payable, gross	1,410.3	1,420.9
Debt discount and issuance costs	(15.8)	(16.7)
Notes payable, net	1,394.5	1,404.2
Leasing Nonrecourse Term Loans
Debt Instrument [Line Items]
Term loans	785.1	792.1
Senior Term Debt
Debt Instrument [Line Items]
Term loans	248.1	251.7
2.875% Convertible senior notes, due 2028
Debt Instrument [Line Items]
Convertible senior notes	$ 373.8	$ 373.8

Notes Payable, Net - Notes Pa_2

Notes Payable, Net - Notes Payable, Net (Parenthetical) (Details)	Nov. 30, 2024	Aug. 31, 2024	Nov. 30, 2023
2.875% Convertible senior notes, due 2028
Debt Instrument [Line Items]
Debt instrument, interest rate	2.875%	2.875%	2.875%

Notes Payable, Net - Additional

Notes Payable, Net - Additional Information (Detail) - USD ($) $ in Millions	Nov. 30, 2024	Aug. 31, 2024
Debt Instrument [Line Items]
Debt instrument amount outstanding	$ 1,410.3	$ 1,420.9
Leasing Nonrecourse Term Loans | Nonrecourse Senior Term Debt
Debt Instrument [Line Items]
Debt instrument amount outstanding	317.4
Leasing Nonrecourse Term Loans | Asset-Backed Term Notes
Debt Instrument [Line Items]
Debt instrument amount outstanding	$ 467.7

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss, Net of Tax (Detail) $ in Millions	3 Months Ended
	Nov. 30, 2024 USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 1,376.1
Ending balance	1,412.7
Unrealized Gain (Loss) on Derivative Financial Instruments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	15.2
Other comprehensive gain (loss) before reclassifications	7.2
Amounts reclassified from Accumulated other comprehensive loss	(3.5)
Ending balance	18.9
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(47)
Other comprehensive gain (loss) before reclassifications	(11.3)
Ending balance	(58.3)
Other
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(2.2)
Ending balance	(2.2)
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(34)
Other comprehensive gain (loss) before reclassifications	(4.1)
Amounts reclassified from Accumulated other comprehensive loss	(3.5)
Ending balance	$ (41.6)

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Loss - Amounts Reclassified out of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Millions	3 Months Ended
	Nov. 30, 2024	Nov. 30, 2023
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Interest and foreign exchange	$ 23.4	$ 23.2
Total before tax	(88.4)	(41.7)
Income tax expense	33.4	10
Unrealized Gain on Derivative Financial Instruments | Reclassification out of Accumulated Other Comprehensive loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Total before tax	(4.4)	(4.4)
Income tax expense	0.9	0.9
Net of tax	(3.5)	(3.5)
Unrealized Gain on Derivative Financial Instruments | Reclassification out of Accumulated Other Comprehensive loss | Foreign Exchange Contracts
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Revenue and Cost of revenue	(0.4)	(0.1)
Unrealized Gain on Derivative Financial Instruments | Reclassification out of Accumulated Other Comprehensive loss | Interest rate swap contracts
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Interest and foreign exchange	$ (4)	$ (4.3)

Earnings Per Share - Reconcilia

Earnings Per Share - Reconciliation of Shares Used in Computation of Basic and Diluted Earnings Per Common Share (Detail) - shares shares in Thousands		3 Months Ended
		Nov. 30, 2024	Nov. 30, 2023
Earnings Per Share Disclosure [Line Items]
Weighted average basic common shares outstanding		31,246	31,025
Dilutive effect of restricted stock units	[1]	934	931
Weighted average diluted common shares outstanding		32,223	32,782
2.875% Convertible senior notes, due 2024
Earnings Per Share Disclosure [Line Items]
Dilutive effect of convertible notes	[2]		826
2.875% Convertible senior notes, due 2028
Earnings Per Share Disclosure [Line Items]
Dilutive effect of convertible notes	[3]	43
[1] Restricted stock units and restricted stock units subject to performance criteria, for which actual levels of performance above target have been achieved, are included in weighted average diluted common shares outstanding when the Company is in a net earnings position. The dilutive effect of the 2.875 % Convertible notes due 2024 was included for the three months ended November 30, 2023 under the “if converted” method as further discussed below. These notes were retired on February 1, 2024. The dilutive effect of the 2.875 % Convertible notes due 2028 was excluded for the three months ended November 30, 2023 as the average stock price was less than the applicable conversion price and therefore was considered anti-dilutive. As these notes require cash settlement for the principal, only a premium is potentially dilutive under the "if converted" method as further discussed below.

Earnings Per Share - Reconcil_2

Earnings Per Share - Reconciliation of Shares Used in Computation of Basic and Diluted Earnings Per Common Share (Parenthetical) (Detail)	Nov. 30, 2024	Aug. 31, 2024	Nov. 30, 2023
2.875% Convertible senior notes, due 2024
Earnings Per Share Disclosure [Line Items]
Debt instrument, interest rate	2.875%		2.875%
2.875% Convertible senior notes, due 2028
Earnings Per Share Disclosure [Line Items]
Debt instrument, interest rate	2.875%	2.875%	2.875%

Earnings Per Share - Additional

Earnings Per Share - Additional Information (Detail)	Nov. 30, 2024	Aug. 31, 2024	Nov. 30, 2023
2.875% Convertible senior notes, due 2024
Earnings Per Share Disclosure [Line Items]
Debt instrument, interest rate	2.875%		2.875%
2.875% Convertible senior notes, due 2028
Earnings Per Share Disclosure [Line Items]
Debt instrument, interest rate	2.875%	2.875%	2.875%

Earnings Per Share - Approach t

Earnings Per Share - Approach to Calculate Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions		3 Months Ended
		Nov. 30, 2024	Nov. 30, 2023
Earnings Per Share Disclosure [Line Items]
Net Income (Loss)		$ 55.3	$ 31.2
Weighted average basic common shares outstanding		31,246	31,025
Basic earnings per share		$ 1.77	$ 1
Net earnings attributable to Greenbrier		$ 55.3	$ 31.2
Interest and debt issuance costs on the 2.875% convertible notes due 2024, net of tax			0.3
Earnings before interest and debt issuance costs on the 2.875% convertible notes due 2024		$ 55.3	$ 31.5
Weighted average diluted common shares outstanding		32,223	32,782
Diluted earnings per share	[1]	$ 1.72	$ 0.96
[1] Diluted earnings per share was calculated as follows: Earnings before interest and debt issuance costs on the 2.875 % convertible notes due 2024 Weighted average diluted common shares outstanding

Earnings Per Share - Approach_2

Earnings Per Share - Approach to Calculate Diluted Earnings Per Share (Parenthetical) (Detail)	Nov. 30, 2024	Nov. 30, 2023
2.875% Convertible senior notes, due 2024
Earnings Per Share Disclosure [Line Items]
Debt instrument, interest rate	2.875%	2.875%

Derivative Instruments - Additi

Derivative Instruments - Additional Information (Detail) $ in Millions	3 Months Ended
	Nov. 30, 2024 USD ($)
Foreign Exchange Contracts
Derivative [Line Items]
Aggregate derivative notional amount	$ 214
Amount reclassified to revenue or cost of revenue in the next year	1.7
Interest rate swap contracts
Derivative [Line Items]
Unrealized pre-tax gain (loss) that would be credited to interest expense in the next year	9.5
Interest rate swap contracts | Derivatives maturing from August 2027 through January 2032
Derivative [Line Items]
Aggregate derivative notional amount	$ 667.8
Interest rate swap contracts | Derivatives maturing from August 2027 through January 2032 | Minimum
Derivative [Line Items]
Maturity date	2027-08
Interest rate swap contracts | Derivatives maturing from August 2027 through January 2032 | Maximum
Derivative [Line Items]
Maturity date	2032-01

Derivative Instruments - Fair V

Derivative Instruments - Fair Values of Derivative Instruments (Detail) - Designated as Hedging Instrument - USD ($) $ in Millions	Nov. 30, 2024	Aug. 31, 2024
Derivatives Fair Value [Line Items]
Asset Derivatives	$ 28.8	$ 24
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Accounts Receivable, after Allowance for Credit Loss	Accounts Receivable, after Allowance for Credit Loss
Liability Derivatives	$ 1.1	$ 1.4
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Accounts Payable and Accrued Liabilities	Accounts Payable and Accrued Liabilities
Foreign Exchange Contracts
Derivatives Fair Value [Line Items]
Asset Derivatives	$ 3.3	$ 4.3
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Accounts Receivable, after Allowance for Credit Loss	Accounts Receivable, after Allowance for Credit Loss
Liability Derivatives	$ 1.1	$ 0.1
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Accounts Payable and Accrued Liabilities	Accounts Payable and Accrued Liabilities
Interest rate swap contracts
Derivatives Fair Value [Line Items]
Asset Derivatives	$ 25.5	$ 19.7
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Accounts Receivable, after Allowance for Credit Loss	Accounts Receivable, after Allowance for Credit Loss
Liability Derivatives		$ 1.3
Derivative Liability, Statement of Financial Position [Extensible Enumeration]		Accounts Payable and Accrued Liabilities

Derivative Instruments - Effect

Derivative Instruments - Effect of Derivative Instruments on Statements of Income (Detail) - Cash Flow Hedging - USD ($) $ in Millions	3 Months Ended
	Nov. 30, 2024	Nov. 30, 2023
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in OCI on derivatives	$ 9.2	$ 5.3
Gain (loss) reclassified from accumulated OCI into income	4.4	4.4
Gain (loss) recognized on derivative (amount excluded from effectiveness testing)	0.8	0.9
Foreign Exchange Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income on derivatives	$ (0.1)	$ 0.2
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Interest And Foreign Exchange Net	Interest And Foreign Exchange Net
Foreign Exchange Contracts | Sales
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in OCI on derivatives	$ (1.3)	$ 2.4
Gain (loss) reclassified from accumulated OCI into income	0.5	0.2
Gain (loss) recognized on derivative (amount excluded from effectiveness testing)	$ 0.8	$ 0.6
Derivative Instrument, Gain (Loss) Reclassified from AOCI into Income, Effective Portion, Statement of Income or Comprehensive Income [Extensible Enumeration]	Revenue from Contract with Customer, Excluding Assessed Tax	Revenue from Contract with Customer, Excluding Assessed Tax
Foreign Exchange Contracts | Cost Of Revenue
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in OCI on derivatives	$ (0.4)	$ (0.2)
Gain (loss) reclassified from accumulated OCI into income	$ (0.1)	(0.1)
Gain (loss) recognized on derivative (amount excluded from effectiveness testing)		$ 0.3
Derivative Instrument, Gain (Loss) Reclassified from AOCI into Income, Effective Portion, Statement of Income or Comprehensive Income [Extensible Enumeration]	Cost of Revenue	Cost of Revenue
Interest rate swap contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in OCI on derivatives	$ 10.9	$ 3.1
Gain (loss) reclassified from accumulated OCI into income	$ 4	$ 4.3
Derivative Instrument, Gain (Loss) Reclassified from AOCI into Income, Effective Portion, Statement of Income or Comprehensive Income [Extensible Enumeration]	Interest And Foreign Exchange Net	Interest And Foreign Exchange Net

Derivative Instruments - Effe_2

Derivative Instruments - Effects of Cash Flow Hedges Included in Statements of Income (Detail) - USD ($) $ in Millions	3 Months Ended
	Nov. 30, 2024	Nov. 30, 2023
Derivative [Line Items]
Revenue	$ 875.9	$ 808.8
Cost of revenue	702.3	687.5
Interest and foreign exchange	23.4	23.2
Sales
Derivative [Line Items]
Amount of gain (loss) on cash flow hedge activity	0.5	0.2
Cost of Sales
Derivative [Line Items]
Amount of gain (loss) on cash flow hedge activity	(0.1)	(0.1)
Interest and Foreign Exchange
Derivative [Line Items]
Amount of gain (loss) on cash flow hedge activity	$ 4	$ 4.3

Segment Information - Additiona

Segment Information - Additional Information (Detail)	3 Months Ended
	Nov. 30, 2024 Segment
Segment Reporting [Abstract]
Number of reportable segments	2

Segment Information - Segments

Segment Information - Segments Internal Financial Reports (Detail) - USD ($) $ in Millions	3 Months Ended
	Nov. 30, 2024	Nov. 30, 2023	Aug. 31, 2024
Segment Reporting Information [Line Items]
Revenue	$ 875.9	$ 808.8
Earnings (loss) from operations	111.8	64.9
Assets	4,287.5		$ 4,254.5
Manufacturing
Segment Reporting Information [Line Items]
Revenue	820.4	759.7
Leasing & Fleet Management
Segment Reporting Information [Line Items]
Revenue	55.5	49.1
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Earnings (loss) from operations	(31)	(26.3)
Intersegment Eliminations
Segment Reporting Information [Line Items]
Revenue	(3)	(58.9)
Earnings (loss) from operations	0	(4.7)
Intersegment Eliminations | Manufacturing
Segment Reporting Information [Line Items]
Revenue	2.8	58.7
Earnings (loss) from operations	0	4.7
Intersegment Eliminations | Leasing & Fleet Management
Segment Reporting Information [Line Items]
Revenue	0.2	0.2
Operating Segments | Manufacturing
Segment Reporting Information [Line Items]
Revenue	823.2	818.4
Earnings (loss) from operations	116.1	69.6
Assets	2,134.7		2,172.4
Operating Segments | Leasing & Fleet Management
Segment Reporting Information [Line Items]
Revenue	55.7	49.3
Earnings (loss) from operations	26.7	26.3
Assets	1,775.3		1,633.6
Operating Segments | Unallocated, including cash
Segment Reporting Information [Line Items]
Assets	377.5		$ 448.5
Reconciling Items | Manufacturing
Segment Reporting Information [Line Items]
Earnings (loss) from operations	116.1	64.9
Reconciling Items | Leasing & Fleet Management
Segment Reporting Information [Line Items]
Earnings (loss) from operations	$ 26.7	$ 26.3

Segment Information - Reconcili

Segment Information - Reconciliation of Earnings from Operations to Earnings Before Income Tax and Earnings from Unconsolidated Affiliates (Detail) - USD ($) $ in Millions	3 Months Ended
	Nov. 30, 2024	Nov. 30, 2023
Segment Reporting [Abstract]
Earnings from operations	$ 111.8	$ 64.9
Interest and foreign exchange	23.4	23.2
Earnings before income tax and earnings from unconsolidated affiliates	$ 88.4	$ 41.7

Leases - Additional Information

Leases - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Nov. 30, 2024	Nov. 30, 2023	Aug. 31, 2024
Lessor and Lessee, Lease, Description [Line Items]
Operating lease option to extend	options to extend up to 6 years
Leasing & Management Services
Lessor and Lessee, Lease, Description [Line Items]
Operating lease rental revenues	$ 32	$ 27.7
Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration]	Revenue from Contract with Customer, Excluding Assessed Tax	Revenue from Contract with Customer, Excluding Assessed Tax
Car Hire Utilization Arrangements
Lessor and Lessee, Lease, Description [Line Items]
Operating lease rental revenues	$ 4.3	$ 5.4
Minimum
Lessor and Lessee, Lease, Description [Line Items]
Sublease period	1 year
Opreating lease remaining lease term	1 year
Maximum
Lessor and Lessee, Lease, Description [Line Items]
Sublease period	12 years
Opreating lease remaining lease term	74 years
Equipment on Operating Lease
Lessor and Lessee, Lease, Description [Line Items]
Accumulated depreciation	$ 101.8		$ 93.4
Depreciation expense	$ 8.6	$ 7.8

Leases - Aggregate Minimum Futu

Leases - Aggregate Minimum Future Amounts Receivable Under All Non-Cancelable Operating Leases and Subleases (Detail) $ in Millions	Nov. 30, 2024 USD ($)
Leases [Abstract]
Remaining nine months of 2025	$ 79.3
2026	95.8
2027	85.1
2028	67.2
2029	50.2
Thereafter	90.3
Operating Leases, Future Minimum Payments Receivable, Total	$ 467.9

Leases - Components of Operatin

Leases - Components of Operating Lease Costs (Detail) - USD ($) $ in Millions	3 Months Ended
	Nov. 30, 2024	Nov. 30, 2023
Leases [Abstract]
Operating lease expense	$ 4.3	$ 4.2
Short-term lease expense	1.5	1.7
Total	$ 5.8	$ 5.9

Leases - Aggregate Minimum Fu_2

Leases - Aggregate Minimum Future Amounts Payable Under Operating Leases (Detail) - USD ($) $ in Millions	Nov. 30, 2024	Aug. 31, 2024
Leases [Abstract]
Remaining nine months of 2025	$ 10.4
2026	13.5
2027	10.7
2028	9.7
2029	7.9
Thereafter	15.8
Total lease payments	68
Less: Imputed interest	(6)
Operating Lease, Liability	$ 62	$ 66
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Accounts payable and accrued liabilities	Accounts payable and accrued liabilities

Leases - Additional Informati_2

Leases - Additional Information Related to Company's Leases (Detail)	Nov. 30, 2024
Leases [Abstract]
Weighted average remaining lease term (years)	10 years 6 months
Weighted average discount rate	2.80%

Leases - Supplemental Cash Flow

Leases - Supplemental Cash Flow Information Related to Leases (Detail) $ in Millions	3 Months Ended
	Nov. 30, 2024 USD ($)
Cash Flow, Operating Activities, Lessee [Abstract]
Operating cash flows from operating leases	$ 4.2
ROU assets obtained in exchange for new operating lease liabilities	$ 0.2

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($)		204 Months Ended
	Jan. 06, 2017	Dec. 31, 2016	Nov. 30, 2024
Commitments and Contingencies Disclosure [Line Items]
Remedial investigation and feasibility study		$ 110,000,000
Performance Guarantee
Commitments and Contingencies Disclosure [Line Items]
Letter of credit facility outstanding amount			$ 6,600,000
Portland Harbor Superfund Site
Commitments and Contingencies Disclosure [Line Items]
Estimated undiscounted cost	$ 1,700,000,000
Period for remedial action	13 years
Period for monitoring	30 years
Portland Harbor Superfund Site | Minimum
Commitments and Contingencies Disclosure [Line Items]
Accuracy of cost estimate	(30.00%)
Portland Harbor Superfund Site | Maximum
Commitments and Contingencies Disclosure [Line Items]
Accuracy of cost estimate	50%

Fair Value Measures - Assets an

Fair Value Measures - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Millions		Nov. 30, 2024	Aug. 31, 2024
Assets:
Nonqualified savings plan investments		$ 64.4	$ 54.5
Fair Value, Measurements, Recurring
Assets:
Derivative financial instruments		28.8	24
Nonqualified savings plan investments		64.4	54.5
Cash equivalents		151.2	195.3
Assets, Fair Value Disclosure, Total		244.4	273.8
Liabilities:
Derivative financial instruments		1.1	1.4
Fair Value, Inputs, Level 1 | Fair Value, Measurements, Recurring
Assets:
Nonqualified savings plan investments		64.4	54.5
Cash equivalents		151.2	195.3
Assets, Fair Value Disclosure, Total		215.6	249.8
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring
Assets:
Derivative financial instruments	[1]	28.8	24
Assets, Fair Value Disclosure, Total	[1]	28.8	24
Liabilities:
Derivative financial instruments	[1]	$ 1.1	$ 1.4
[1] Level 2 assets and liabilities include derivative financial instruments that are valued based on observable inputs. See Note 11 - Derivative Instruments to the Condensed Consolidated Financial Statements for further discussion.

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail) - Axis LLC - USD ($) $ in Millions	3 Months Ended
	Nov. 30, 2024	Nov. 30, 2023
Related Party Transaction [Line Items]
Percentage of ownership in entity	41.90%
Railcar Components
Related Party Transaction [Line Items]
Purchases of goods from related party	$ 3.1	$ 2.3