The Greenbrier Companies, Inc. (GBX) 10-Q 6 Jan 23 2023 Q1 Quarterly report Financial data

Cover Page

Cover Page - shares	3 Months Ended
	Nov. 30, 2022	Jan. 03, 2023
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Nov. 30, 2022
Document Fiscal Year Focus	2023
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		32,782,692
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, 2022	Aug. 31, 2022
Assets
Cash and cash equivalents	$ 263.3	$ 543
Restricted cash	17.2	16.1
Accounts receivable, net	495.6	501.2
Income tax receivable	28.9	39.8
Inventories	874.9	815.3
Leased railcars for syndication	272.5	111.1
Equipment on operating leases, net	836.2	770.9
Property, plant and equipment, net	617.6	645.2
Investment in unconsolidated affiliates	94.2	92.5
Intangibles and other assets, net	189	189.1
Goodwill	127.7	127.3
Total assets	3,817.1	3,851.5
Liabilities and Equity
Revolving notes	290.5	296.6
Accounts payable and accrued liabilities	676.5	725.1
Deferred income taxes	49.8	68.6
Deferred revenue	53.2	35.3
Notes payable, net	1,301.5	1,269.1
Commitments and contingencies (Note 15)
Contingently redeemable noncontrolling interest	27.7	27.7
Greenbrier
Preferred stock - without par value; 25,000 shares authorized; none outstanding
Common stock - without par value; 50,000 shares authorized; 32,783 and 32,603 shares outstanding at November 30, 2022 and August 31, 2022
Additional paid-in capital	425.6	424.8
Retained earnings	871.9	897.7
Accumulated other comprehensive loss	(31.7)	(45.6)
Total equity – Greenbrier	1,265.8	1,276.9
Noncontrolling interest	152.1	152.2
Total equity	1,417.9	1,429.1
Liabilities and Equity	$ 3,817.1	$ 3,851.5

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Nov. 30, 2022	Aug. 31, 2022
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	32,783,000	32,603,000

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Millions		3 Months Ended
		Nov. 30, 2022	Nov. 30, 2021
Revenue
Revenue		$ 766.5	$ 550.7
Cost of revenue
Cost of revenue		697	503.1
Margin		69.5	47.6
Selling and administrative expense		53.4	44.3
Net gain on disposition of equipment		(3.3)	(8.5)
Impairment of long-lived assets		24.2
Earnings (loss) from operations		(4.8)	11.8
Other costs
Interest and foreign exchange		19.6	12.6
Loss before income tax and earnings from unconsolidated affiliates		(24.4)	(0.8)
Income tax benefit		3.8	1.4
Earnings (loss) before earnings from unconsolidated affiliates		(20.6)	0.6
Earnings from unconsolidated affiliates		3.3	5
Net earnings (loss)		(17.3)	5.6
Net loss attributable to noncontrolling interest		0.6	5.2
Net earnings (loss) attributable to Greenbrier		$ (16.7)	$ 10.8
Basic earnings (loss) per common share		$ (0.51)	$ 0.33
Diluted earnings (loss) per common share		$ (0.51)	$ 0.32
Weighted average common shares:
Basic	[1]	32,719	32,510
Diluted		32,719	33,570
Manufacturing
Revenue
Revenue		$ 646.5	$ 452.5
Cost of revenue
Cost of revenue		604.5	421.6
Maintenance Services
Revenue
Revenue		85.5	72.4
Cost of revenue
Cost of revenue		79.6	71.2
Leasing & Management Services
Revenue
Revenue		34.5	25.8
Cost of revenue
Cost of revenue		$ 12.9	$ 10.3
[1] Restricted stock grants and restricted stock units that are considered participating securities, including some grants subject to certain performance criteria, are included in weighted average basic common shares outstanding when the Company is in a net earnings position.

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Millions		3 Months Ended
		Nov. 30, 2022	Nov. 30, 2021
Statement of Comprehensive Income [Abstract]
Net earnings (loss)		$ (17.3)	$ 5.6
Other comprehensive income (loss)
Translation adjustment		5.5	(13.9)
Reclassification of derivative financial instruments recognized in net earnings (loss)	[1]	(0.5)	1
Unrealized gain (loss) on derivative financial instruments	[2]	8.9	(3.2)
Other (net of tax effect)			(0.1)
Other comprehensive income		13.9	(16.2)
Comprehensive loss		(3.4)	(10.6)
Comprehensive loss attributable to noncontrolling interest		0.6	5.2
Comprehensive loss attributable to Greenbrier		$ (2.8)	$ (5.4)
[1] 1 Net of tax effect of $ 0.3 million and ($ 0.5 million) for the three months ended November 30, 2022 and 2021. 2 Net of tax effect of ($ 3.0 million) and $ 1.0 million for the three months ended November 30, 2022 and 2021.

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Comprehensive Loss (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Nov. 30, 2022	Nov. 30, 2021
Statement of Comprehensive Income [Abstract]
Reclassification of derivative financial instruments recognized in net earnings (loss), tax	$ 0.3	$ (0.5)
Unrealized loss on derivative financial instruments, tax	$ (3)	$ 1

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Equity - USD ($) shares in Thousands, $ in Millions	Total	Common Stock Shares	Additional Paid-in Capital	Additional Paid-in Capital Cumulative Effect Adjustment Due to Adoption	Retained Earnings	Retained Earnings Cumulative Effect Adjustment Due to Adoption	Accumulated Other Comprehensive (Loss)	Total Equity - Greenbrier	Total Equity - Greenbrier Cumulative Effect Adjustment Due to Adoption	Noncontrolling Interest	Equity Excluding Contingently Redeemable Noncontrolling Interest	Equity Excluding Contingently Redeemable Noncontrolling Interest Cumulative Effect Adjustment Due to Adoption	Contingently Redeemable Noncontrolling Interest
Beginning balance at Aug. 31, 2021			$ 469.7	$ (58.8)	$ 881.7	$ 4.9	$ (43.7)	$ 1,307.7	$ (53.9)	$ 168.7	$ 1,476.4	$ (53.9)
Beginning balance (in shares) at Aug. 31, 2021		32,400
Beginning balance at Aug. 31, 2021													$ 29.7
Accounting Standards Update [Extensible List]			us-gaap:AccountingStandardsUpdate202006Member		us-gaap:AccountingStandardsUpdate202006Member			us-gaap:AccountingStandardsUpdate202006Member			us-gaap:AccountingStandardsUpdate202006Member
Net earnings (loss)	$ 5.6				$ 10.8			$ 10.8		(5.2)	$ 5.6
Other comprehensive income, net	(16.2)						(16.2)	(16.2)			(16.2)
Noncontrolling interest adjustments										(0.2)	(0.2)
Joint venture partner distribution declared										(0.6)	(0.6)
Restricted stock awards (net of cancellations)			$ 10.5					10.5			10.5
Restricted stock awards (net of cancellations) (in shares)		100
Unamortized restricted stock			(14)					(14)			(14)
Stock based compensation expense			1.1					1.1			1.1
Cash dividends					(8.7)			(8.7)			(8.7)
Ending balance at Nov. 30, 2021			408.5		888.7		(59.9)	1,237.3		162.7	1,400
Ending Balance (in shares) at Nov. 30, 2021		32,500
Ending Balance at Nov. 30, 2021													29.7
Beginning balance at Aug. 31, 2022	$ 1,429.1		424.8		897.7		(45.6)	1,276.9		152.2	1,429.1
Beginning balance (in shares) at Aug. 31, 2022	32,603	32,600
Beginning balance at Aug. 31, 2022													27.7
Net earnings (loss)	$ (17.3)				(16.7)			(16.7)		(0.6)	(17.3)
Other comprehensive income, net	13.9						13.9	13.9			13.9
Noncontrolling interest adjustments										5.5	5.5
Joint venture partner distribution declared										(5)	(5)
Restricted stock awards (net of cancellations)			8.5					8.5			8.5
Restricted stock awards (net of cancellations) (in shares)		200
Unamortized restricted stock			(10.9)					(10.9)			(10.9)
Stock based compensation expense			3.2					3.2			3.2
Cash dividends					(9.1)			(9.1)			(9.1)
Ending balance at Nov. 30, 2022	$ 1,417.9		$ 425.6		$ 871.9		$ (31.7)	$ 1,265.8		$ 152.1	$ 1,417.9
Ending Balance (in shares) at Nov. 30, 2022	32,783	32,800
Ending Balance at Nov. 30, 2022													$ 27.7

Condensed Consolidated Statem_5

Condensed Consolidated Statements of Equity (Parenthetical) - $ / shares	3 Months Ended
	Nov. 30, 2022	Nov. 30, 2021
Equity Excluding Contingently Redeemable Noncontrolling Interest
Cash dividend per share	$ 0.27	$ 0.27

Condensed Consolidated Statem_6

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Nov. 30, 2022	Nov. 30, 2021
Cash flows from operating activities
Net earnings (loss)	$ (17.3)	$ 5.6
Adjustments to reconcile net earnings (loss) to net cash used in operating activities:
Deferred income taxes	(19)	(4.8)
Depreciation and amortization	26	25.4
Net gain on disposition of equipment	(3.3)	(8.5)
Stock based compensation expense	3.2	1.1
Impairment of long-lived assets	24.2
Noncontrolling interest adjustments	5.5	(0.3)
Other	0.9	0.7
Decrease (increase) in assets:
Accounts receivable, net	8.1	(92.8)
Income tax receivable	10.9	5.9
Inventories	(56.3)	(64.4)
Leased railcars for syndication	(195.3)	(29.5)
Other assets	(7)	(5.9)
Increase (decrease) in liabilities:
Accounts payable and accrued liabilities	(53.7)	(24.1)
Deferred revenue	17.6	(5.1)
Net cash used in operating activities	(255.5)	(196.7)
Cash flows from investing activities
Proceeds from sales of assets	13.8	28
Capital expenditures	(57)	(186.9)
Investments in and advances to / repayments from unconsolidated affiliates	0.9	0.2
Cash distribution to / from unconsolidated affiliates and other	(0.7)
Net cash used in investing activities	(43)	(158.7)
Cash flows from financing activities
Net change in revolving notes with maturities of 90 days or less	(83.4)	147.6
Proceeds from revolving notes with maturities longer than 90 days	110
Repayments of revolving notes with maturities longer than 90 days	(35)
Proceeds from issuance of notes payable	41
Repayments of notes payable	(9.2)	(2)
Debt issuance costs		(1.2)
Dividends	(9.3)	(9.3)
Cash distribution to joint venture partner	(2.5)	(1)
Tax payments for net share settlement of restricted stock	(2.3)	(3.4)
Net cash provided by financing activities	9.3	130.7
Effect of exchange rate changes	10.6	(8.8)
Decrease in cash and cash equivalents and restricted cash	(278.6)	(233.5)
Cash and cash equivalents and restricted cash
Cash and cash equivalents and restricted cash, Beginning balance	559.1	671.4
Cash and cash equivalents and restricted cash, Ending balance	280.5	437.9
Balance sheet reconciliation
Cash and cash equivalents	263.3	410.8
Restricted cash	17.2	27.1
Total cash and cash equivalents and restricted cash as presented above	280.5	437.9
Cash paid during the period for
Interest	18	10.6
Income taxes paid (received), net	7.6	(0.7)
Non-cash activity
Transfers between Leased railcars for syndication and Inventories and Equipment on operating leases, net	33.3	(13.8)
Capital expenditures accrued in Accounts payable and accrued liabilities	3.9	1.6
Change in Accounts payable and accrued liabilities associated with dividends declared	(0.2)	(0.6)
Change in Accounts payable and accrued liabilities associated with cash distributions to joint venture partner	$ 2.5	$ 0.4

Interim Financial Statements

Interim Financial Statements	3 Months Ended
	Nov. 30, 2022
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 (Greenbrier or the Company) as of November 30, 2022 and for the three months ended November 30, 2022 and 2021 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. The results of operations for the three months ended November 30, 2022 are not necessarily indicative of the results to be expected for the entire year ending August 31, 2023. 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, 2022. Management Estimates – The preparation of financial statements in conformity with accounting principles generally accepted in the U.S. (GAAP) 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. Reclassifications - Certain immaterial reclassifications have been made to the accompanying prior year Condensed Consolidated Financial Statements to conform to the current year presentation. Initial Adoption of Accounting Standards Reference Rate Reform In March 2020, the Financial Accounting Standards Board (FASB) issued Accounting Standard Update (ASU) 2020-04, Reference Rate Reform (Topic 848): Facilitation of Effects of Reference Rate Reform on Financial Reporting (ASU 2020-04), which provides practical expedients and exceptions for applying GAAP to contracts, hedging relationships, and other transactions affected by reference rate reform if certain criteria are met. The elective amendments provide expedients to contract modification, affected by reference rate reform if certain criteria are met. The expedients and exceptions provided by this guidance apply only to contracts, hedging relationships, and other transactions that reference the London interbank offered rate (LIBOR) or another reference rate expected to be discontinued as a result of reference rate reform. In December 2022, the FASB issued ASU 2022-06, Reference Rate Reform (Topic 848): Deferral of the Sunset Date of Topic 848 , to extend the temporary accounting rules under Topic 848 from December 31, 2022 to December 31, 2024. This guidance is not applicable to contract modifications made and hedging relationships entered into or evaluated after December 31, 2024. During the fourth quarter of fiscal year 2022, the Company adopted the optional relief guidance provided under ASU 2020-04 after modifying certain debt to update the reference rate from LIBOR to the Secured Overnight Financing Rate (SOFR). This caused a temporary mismatch in our interest rate swap and debt for a period of time. The application of this expedient preserves the presentation of the derivatives consistent with past presentation. The Company will continue to assess the impact of the guidance and may apply other elections as applicable going forward.

Revenue Recognition

Revenue Recognition	3 Months Ended
	Nov. 30, 2022
Revenue from Contract with Customer [Abstract]
Revenue Recognition	Note 2 – Revenue Recognition Contract balances Contract assets primarily consist of unbilled receivables related to marine vessel construction for which the respective contracts do not yet permit billing at the reporting date, and railcar maintenance inventories. Contract liabilities primarily consist of customer prepayments for manufacturing, maintenance, 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 $ 1.0 $ 13.0 $ ( 12.0 ) Contract assets Inventories $ 7.5 $ 6.0 $ 1.5 Contract liabilities 1 Deferred revenue $ 49.2 $ 30.5 $ 18.7 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, 2022 and 2021, the Company recognized $ 7.7 million and $ 9.6 million of revenue that was included in Contract liabilities as of August 31, 2022 and 2021. Performance obligations As of November 30 , 2022, 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 $ 2,721.5 Manufacturing – Marine $ 55.6 Manufacturing – Sustainable conversions $ 151.6 Management services $ 122.0 Other $ 12.3 Manufacturing – Railcars intended for syndication 1 $ 469.0 1 Not a performance obligation as defined in Topic 606. Based on current production and delivery schedules and existing contracts, approximately $ 2.0 billion of Railcar sales are expected to be recognized in the remaining nine months of 2023 while the remaining amount is expected to be recognized in 2024. The table above excludes estimated revenue to be recognized at the Company’s Brazilian manufacturing operations, as they are accounted for under the equity method . Revenue amounts reflected in Railcars intended for syndication may be syndicated to third parties or held in the Company’s fleet depending on a variety of factors. Marine revenue is expected to be recognized through 2024 as vessel construction is completed. Sustainable conversions represent orders to modernize existing railcars and are expected to be recognized through 2023. Management services includes management and maintenance services of which approximately 53 % are expected to be performed through 2027 and the remaining amount through 2037.

Inventories

Inventories	3 Months Ended
	Nov. 30, 2022
Inventory Disclosure [Abstract]
Inventories	Note 3 – Inventories Inventories are valued at the lower of cost or net realizable value using the first-in first-out method. Work-in-process includes material, labor and overhead. Finished goods includes completed wheels, parts and railcars not on lease or in transit. The following table summarizes the Company’s inventory balance: (in millions) November 30, August 31, Manufacturing supplies and raw materials $ 669.0 $ 570.2 Work-in-process 142.8 183.3 Finished goods 77.9 75.9 Excess and obsolete adjustment ( 14.8 ) ( 14.1 ) $ 874.9 $ 815.3

Gunderson Facility

Gunderson Facility	3 Months Ended
	Nov. 30, 2022
Property, Plant and Equipment [Abstract]
Gunderson Facility	Note 4 – Gunderson Facility On November 17, 2022, as part of the Company's strategic review of the global business capacity footprint, the Company decided to permanently cease rail production at the Company’s Gunderson facility during 2023 and to explore alternatives to exit marine barge production in the first part of calendar 2024 . Due to the change in future use of the facility, management assessed recoverability of Gunderson assets in accordance with the Company’s policy on impairment of long-lived assets. Based on an analysis of future undiscounted cash flows associated with these assets, management determined that the carrying value was not recoverable. The carrying amount of the Company’s long-lived assets at the Gunderson facility was $ 44.0 million and the fair value was $ 19.8 million as of the impairment date. The fair value was primarily determined based on estimated market prices of the assets and represented a Level 3 valuation in the fair value hierarchy. On January 5, 2023, the Company concluded that an impairment charge was necessary and $ 24.2 million was recorded in the Manufacturing segment as Impairment of long-lived assets within the Condensed Consolidated Statements of Operations for the quarter ended November 30, 2022. Although it is possible that costs and charges related to the cessation of production at the facility, such as exit costs, accelerated depreciation, and termination benefits may be incurred in future periods, the amount of any such costs and charges is not estimable at this time and the Company does not yet know if the amount of any such costs and charges will be material.

Intangibles and Other Assets, n

Intangibles and Other Assets, net	3 Months Ended
	Nov. 30, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Intangibles and Other Assets, net	Note 5 – Intangibles and Other Assets, net Intangible assets that are determined to have finite lives are amortized over their useful lives. Intangible assets with indefinite useful lives are not amortized and are periodically evaluated for impairment. The following table summarizes the Company’s identifiable intangible and other assets balance: (in millions) November 30, August 31, Intangible assets subject to amortization: Customer relationships $ 87.5 $ 87.5 Accumulated amortization ( 66.9 ) ( 66.1 ) Other intangibles 43.3 42.4 Accumulated amortization ( 18.0 ) ( 16.5 ) 45.9 47.3 Intangible assets not subject to amortization 2.4 2.4 Prepaid and other assets 34.9 32.4 Operating lease ROU assets 52.7 54.2 Nonqualified savings plan investments 45.0 40.3 Debt issuance costs, net 7.8 8.7 Assets held for sale 0.3 3.8 $ 189.0 $ 189.1 Amortization expense was $ 2.0 million and $ 3.1 million for the three months ended November 30, 2022 and 2021, respective ly. Amortization expense for the years ending August 31, 2023, 2024, 2025, 2026 and 2027 is expected to be $ 8.3 million, $ 7.5 million, $ 6.5 million, $ 6.1 million and $ 5.3 million, respectively.

Revolving Notes

Revolving Notes	3 Months Ended
	Nov. 30, 2022
Debt Disclosure [Abstract]
Revolving Notes	Note 6 – Revolving Notes Senior secured credit facilities, consisting of four components, aggregated to $ 1.1 billion as of November 30, 2022. We had an aggregate of $ 213.4 million available to draw down under committed credit facilities as of November 30, 2022. This amount consists of $ 158.3 million available on the North American credit facility, $ 25.1 million on the European credit facilities and $ 30 million on the Mexican credit facilities. As of November 30, 2022, 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. As of November 30, 2022, a $ 350.0 million non-recourse warehouse credit facility existed to support the operations of GBX Leasing. This facility remains undrawn at November 30, 2022. Advances under this facility bear interest at SOFR plus 1.85 % plus 0.11 % as a SOFR adjustment. The warehouse credit facility converts to a term loan in August 2025 and matures in August 2027 . As of November 30, 2022, lines of credit totaling $ 70.5 million secured by certain of the Company’s European assets, with variable rates that range from Warsaw Interbank Offered Rate (WIBOR) plus 1.2 % to WIBOR plus 1.6 % and Euro Interbank Offered Rate (EURIBOR) plus 1.1 % to EURIBOR plus 1.5 %, were available for working capital needs of the Company’s European manufacturing operations. The European lines of credit in clude $ 34.2 million which is guaranteed by the Company. Euro pean credit facilities are regularly renewed. Currently, these European credit facilities have maturities that range from February 2023 through September 2024 . As of November 30, 2022, the Company’s Mexican railcar manufacturing operations had three lines of credit totaling $ 115.0 million for working capital needs. The first line of credit provides up to $ 30.0 million, of which the Company and its joint venture partner have each guaranteed 50 %. Advances under this facility bear interest at LIBOR plus 3.75 % to 4.25 %. The Mexican railcar manufacturing joint venture will be able to draw amounts available under this facility through June 2024 . The second line of credit provides up to $ 35.0 million, of which the Company and its joint venture partner have each guaranteed 50 %. Advances under this facility bear interest at LIBOR plus 3.75 %. The Mexican railcar manufacturing joint venture will be able to draw amounts available under this facility through June 2023 . The third line of credit pro vides up to $ 50.0 million and matures in October 2024 . Advances under this facility bear interest at LIBOR plus 4.25 %. Credit facility balances: (in millions) November 30, August 31, North America $ 160.0 $ 160.0 Mexico 85.0 85.0 Europe 45.5 51.6 GBX Leasing — — Total Revolving notes $ 290.5 $ 296.6 Outstanding commitments under the North American credit facility included letters of credit which totaled $ 6.2 million and $ 6.9 million as of November 30, 2022 and August 31, 2022, respectively.

Accounts Payable and Accrued Li

Accounts Payable and Accrued Liabilities	3 Months Ended
	Nov. 30, 2022
Payables and Accruals [Abstract]
Accounts Payable and Accrued Liabilities	Note 7 – Accounts Payable and Accrued Liabilities (in millions) November 30, August 31, Trade payables $ 386.2 $ 401.5 Other accrued liabilities 95.4 102.8 Operating lease liabilities 54.7 56.4 Accrued payroll and related liabilities 116.5 140.4 Accrued warranty 23.7 24.0 $ 676.5 $ 725.1

Warranty Accruals

Warranty Accruals	3 Months Ended
	Nov. 30, 2022
Guarantees and Product Warranties [Abstract]
Warranty Accruals	Note 8 – Warranty Accruals Warranty costs are estimated and charged to operations to cover a defined warranty period. The estimated warranty cost is based on the history of warranty claims for each particular product type. For new product types without a warranty history, preliminary estimates are based on historical information for similar product types. The warranty accruals, included in Accounts payable and accrued liabilities on the Consolidated Balance Sheets, are reviewed periodically and updated based on warranty trends and expirations of warranty periods. Warranty accrual activity: Three Months Ended (in millions) 2022 2021 Balance at beginning of period $ 24.0 $ 27.9 Charged to cost of revenue, net 1.2 0.9 Payments ( 1.6 ) ( 1.0 ) Currency translation effect 0.1 ( 0.3 ) Balance at end of period $ 23.7 $ 27.5

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	3 Months Ended
	Nov. 30, 2022
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 Foreign Other Accumulated Balance, August 31, 2022 $ 13.0 $ ( 57.4 ) $ ( 1.2 ) $ ( 45.6 ) Other comprehensive gain before reclassifications 8.9 5.5 — 14.4 Amounts reclassified from Accumulated other ( 0.5 ) — — ( 0.5 ) Balance, November 30, 2022 $ 21.4 $ ( 51.9 ) $ ( 1.2 ) $ ( 31.7 ) The amounts reclassified out of Accumulated other comprehensive loss into the Consolidated Statements of Operations, with financial statement caption, were as follows: Three Months Ended (in millions) 2022 2021 Financial Statement Caption (Gain) loss on derivative financial instruments: Foreign exchange contracts $ 0.2 $ 1.3 Revenue and Cost of revenue Interest rate swap contracts ( 1.0 ) 0.2 Interest and foreign exchange ( 0.8 ) 1.5 Total before tax 0.3 ( 0.5 ) Income tax expense $ ( 0.5 ) $ 1.0 Net of tax

Earnings (Loss) Per Share

Earnings (Loss) Per Share	3 Months Ended
	Nov. 30, 2022
Earnings Per Share [Abstract]
Earnings (Loss) Per Share	Note 10 – Earnings (Loss) Per Share The shares used in the computation of basic and diluted earnings (loss) per common share are reconciled as follows: Three Months Ended (In thousands) 2022 2021 Weighted average basic common shares outstanding (1) 32,719 32,510 Dilutive effect of 2.875 % convertible notes due 2024 (3) — — Dilutive effect of 2.875 % convertible notes due 2028 (2)(4) — — Dilutive effect of restricted stock units (2) (5) — 1,060 Weighted average diluted common shares outstanding 32,719 33,570 (1) Restricted stock grants and restricted stock units that are considered participating securities, including some grants subject to certain performance criteria, are included in weighted average basic common shares outstanding when the Company is in a net earnings position. (2) The dilutive effect of common stock equivalents was excluded from the share calculation for the three months ended November 30, 2022 due to a net loss. (3) The dilutive effect of the 2.875 % Convertible notes due 2024 was excluded for the three months ended November 30, 2021 as they were considered anti-dilutive under the “if converted” method as further discussed below. (4) The dilutive effect of the 2.875 % Convertible notes due 2028 was excluded for the three months ended November 30, 2022 and 2021 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. (5) Restricted stock units that are not considered participating securities 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 (loss) per common share (EPS) is computed by dividing Net earnings (loss) attributable to Greenbrier by weighted average basic common shares outstanding, which includes restricted stock grants and restricted stock units that are considered participating securities when the Company is in a net earnings position. For the three months ended November 30, 2022 and 2021, 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 that are not considered participating securities 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 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. The dilutive effect of common stock equivalents was excluded from the share calculation for the three months ended November 30, 2022 due to a net loss. Three Months Ended (in millions, except shares which are reflected in thousands, and per share amounts) 2022 2021 Net earnings (loss) attributable to Greenbrier $ ( 16.7 ) $ 10.8 Weighted average basic common shares outstanding 32,719 32,510 Basic earnings (loss) per share $ ( 0.51 ) $ 0.33 Net earnings (loss) attributable to Greenbrier $ ( 16.7 ) $ 10.8 Add back: Interest and debt issuance costs on the 2.875 % n/a n/a Earnings before interest and debt issuance costs 2.875 % convertible notes due 2024 n/a n/a Weighted average diluted common shares outstanding 32,719 33,570 Diluted earnings (loss) per share $ ( 0.51 ) $ 0.32

Stock Based Compensation

Stock Based Compensation	3 Months Ended
	Nov. 30, 2022
Share-Based Payment Arrangement [Abstract]
Stock Based Compensation	Note 11 – Stock Based Compensation The value of stock based compensation awards is amortized as compensation expense from the date of grant through the earlier of the vesting period or in some instances the recipient’s eligible retirement date. Stock based compensation expense consists of restricted stock unit awards. Stock based compensation expense was $ 3.2 million and $ 1.1 million for the three months ended November 30, 2022 and 2021, respectively. Compensation expense is recorded in Selling and administrative expense and Cost of revenue on the Consolidated Statements of Operations.

Derivative Instruments

Derivative Instruments	3 Months Ended
	Nov. 30, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	Note 12 – Derivative Instruments Foreign operations give rise to market risks from changes in foreign currency exchange rates. Foreign currency forward 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 currency forward 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 or loss. At November 30, 2022 exchange rates, notional amounts of forward 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 $ 77.4 million. The fair value of the contracts is included on the 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 October 2023, 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, 2022 exchange rates, approximately $ 1.8 million of loss would be reclassified to revenue or cost of revenue in the next year. At November 30, 2022, interest rate swap agreements maturing from September 2023 through January 2032 had notional amounts that aggregated to $ 473.6 million. The fair value of the contracts is included on the 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 recognized, amounts corresponding to the interest rate swap are reclassified from Accumulated other comprehensive loss and charged or credited to interest expense. At November 30, 2022 interest rates, approximately $ 11.6 million of gain would be reclassified 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 Foreign forward Accounts receivable, $ 0.5 $ 0.6 Accounts payable and $ 1.1 $ 2.9 Interest rate swap Accounts receivable, 30.2 20.8 Accounts payable and — - $ 30.7 $ 21.4 $ 1.1 $ 2.9 Derivatives not Foreign forward Accounts receivable, $ — $ — Accounts payable and $ — $ 0.1 The Effect of Derivative Instruments on the Statements of Operations (in millions) Three Months Ended November 30, 2022 and 2021 Derivatives in cash flow hedging relationships Location of gain (loss) Gain (loss) recognized in income on 2022 2021 Foreign forward exchange contract Interest and foreign exchange $ — $ ( 0.3 ) Derivatives in Gain (loss) recognized Location of gain Gain (loss) reclassified Location of gain Gain (loss) recognized 2022 2021 2022 2021 2022 2021 Foreign $ 1.5 $ ( 4.6 ) Revenue $ ( 0.4 ) $ ( 0.2 ) Revenue $ 0.3 $ 0.2 Foreign 0.3 ( 1.3 ) Cost of 0.2 — Cost of 0.1 0.1 Interest rate 10.4 1.7 Interest and 1.0 ( 1.3 ) Interest and — — $ 12.2 $ ( 4.2 ) $ 0.8 $ ( 1.5 ) $ 0.4 $ 0.3 The following table presents the amounts in the Consolidated Statements of Operations 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, 2022 and 2021: For The Three Months Ended November 30, 2022 2021 Total Amount of gain Total Amount of gain Revenue $ 766.5 $ ( 0.4 ) $ 550.7 $ ( 0.2 ) Cost of revenue $ 697.0 $ 0.2 $ 503.1 $ — Interest and foreign exchange $ 19.6 $ 1.0 $ 12.6 $ ( 1.3 )

Segment Information

Segment Information	3 Months Ended
	Nov. 30, 2022
Segment Reporting [Abstract]
Segment Information	Note 13 – Segment Information The Company operates in three reportable segments: Manufacturing; Maintenance Services; and Leasing & Management Services. The accounting policies of the segments are described in the summary of significant accounting policies in the Consolidated Financial Statements contained in the Company’s Annual Report on Form 10-K for the year ended August 31, 2022. 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) benefit 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 Consolidated Financial Statements. The information in the following table is derived directly from the segments’ internal financial reports used for corporate management purposes. For the three months ended November 30, 2022: Revenue Earnings (loss) from operations (in millions) External Intersegment Total External Intersegment Total Manufacturing $ 646.5 $ 44.5 $ 691.0 $ ( 3.4 ) $ 4.0 $ 0.6 Maintenance Services 85.5 8.5 94.0 5.5 — 5.5 Leasing & Management Services 34.5 0.2 34.7 15.6 — 15.6 Eliminations — ( 53.2 ) ( 53.2 ) — ( 4.0 ) ( 4.0 ) Corporate — — — ( 22.5 ) — ( 22.5 ) $ 766.5 $ — $ 766.5 $ ( 4.8 ) $ — $ ( 4.8 ) For the three months ended November 30, 2021: Revenue Earnings (loss) from operations (in millions) External Intersegment Total External Intersegment Total Manufacturing $ 452.5 $ 39.4 $ 491.9 $ 12.3 $ 0.3 $ 12.6 Maintenance Services 72.4 2.7 75.1 ( 1.1 ) — ( 1.1 ) Leasing & Management Services 25.8 0.3 26.1 17.2 — 17.2 Eliminations — ( 42.4 ) ( 42.4 ) — ( 0.3 ) ( 0.3 ) Corporate — — — ( 16.6 ) — ( 16.6 ) $ 550.7 $ — $ 550.7 $ 11.8 $ — $ 11.8 Total assets (in millions) November 30, August 31, Manufacturing $ 1,861.7 $ 1,853.9 Maintenance Services 294.6 284.8 Leasing & Management Services 1,378.9 1,152.2 Unallocated, including cash 281.9 560.6 $ 3,817.1 $ 3,851.5 Reconciliation of Earnings (loss) from operations to Loss before income tax and earnings from unconsolidated affiliates: Three Months Ended (in millions) 2022 2021 Earnings (loss) from operations $ ( 4.8 ) $ 11.8 Interest and foreign exchange 19.6 12.6 Loss before income tax and earnings $ ( 24.4 ) $ ( 0.8 )

Leases

Leases	3 Months Ended
	Nov. 30, 2022
Leases [Abstract]
Leases	Note 14 – Leases Lessor Equipment on operating leases is reported net of accumulated depreciation of $ 54.0 million and $ 48.6 million as of November 30, 2022 and August 31, 2022, respectively. Depreciation expense was $ 6.0 million and $ 5.1 million for the three months ended November 30, 2022 and 2021, respectively. 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 thirteen years . Operating lease rental revenues included in the Company’s Statements of Operations for the three months ended November 30, 2022 and 2021 was $ 19.6 million and $ 15.0 million, respectively, which included $ 4.8 million and $ 4.5 million, respectively, of revenue as a result of daily, monthly or car hire utilization arrangements. Aggregate minimum future amounts receivable under all non-cancelable operating leases and subleases at November 30, 2022, will mature as follows: (in millions) Remaining nine months of 2023 $ 39.1 2024 45.7 2025 37.2 2026 31.9 2027 27.9 Thereafter 55.6 $ 237.4 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, 2022 and 2021, 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 76 years , with some including options to extend up to 15 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 lease commencement date. The Company gives consideration to 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) 2022 2021 Operating lease expense $ 3.1 $ 2.7 Short-term lease expense 1.9 1.2 Total $ 5.0 $ 3.9 Aggregate minimum future amounts payable under operating leases having initial or remaining non-cancelable terms at November 30, 2022 will mature as follows: (in millions) Remaining nine months of 2023 $ 9.9 2024 11.4 2025 8.6 2026 7.4 2027 4.7 Thereafter 17.7 Total lease payments $ 59.7 Less: Imputed interest ( 5.0 ) Total lease obligations $ 54.7 The table below presents additional information related to the Company’s leases: Weighted average remaining lease term: Operating leases 11.0 Weighted average discount rate: Operating leases 2.1 % Supplemental cash flow information related to leases were as follows: (in millions) Three months ended Cash paid for amounts included in the measurement Operating cash flows from operating leases $ 3.4 ROU assets obtained in exchange for new operating $ 0.8

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Nov. 30, 2022
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 15 – Commitments and Contingencies Portland Harbor Superfund Site The Company’s 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 Company’s manufacturing facility, 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. 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. 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. The EPA's January 6, 2017 ROD identifies a clean-up 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 Sediment Decision Units within the ROD cleanup area. One of the units, RM9W, includes the nearshore area of the river sediments offshore of the Portland Property as well as downstream of the facility. It also includes a portion of the Company’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. The ROD does not address responsibility for the costs of clean-up, nor does it allocate such costs among the potentially responsible parties. Responsibility for funding and implementing the EPA's selected cleanup remedy will be determined at an unspecified later date. Based on the investigation 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 in the area of the Portland Harbor Site adjacent to its property precedes the Company’s ownership of the Portland Property. Because these environmental investigations are still underway, 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. In addition, the Company may be required to perform periodic maintenance dredging in order to continue to launch vessels from its launch ways in Portland, Oregon, on the Willamette River, and the river's classification as a Superfund site could result in some limitations on future dredging and launch activities. Any of these matters could adversely affect the Company’s business and Consolidated Financial Statements, or the value of the Portland Property. 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 Manufacturing Operations 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. Interim precautionary measures are also required in the order and the Company is discussing with the DEQ potential remedial actions which may be required. 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. Other Litigation, Commitments and Contingencies From time to time, Greenbrier 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, 2022, the Company had outstanding letters of credit aggregating to $ 6.2 million assoc iated with performance guarantees, facility leases and workers compensation insurance.

Fair Value Measures

Fair Value Measures	3 Months Ended
	Nov. 30, 2022
Fair Value Disclosures [Abstract]
Fair Value Measures	Note 16 – 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, 2022 were: (in millions) Total Level 1 Level 2 (1) Level 3 Assets: Derivative financial instruments $ 30.7 $ — $ 30.7 $ — Nonqualified savings plan investments 45.0 45.0 — — Cash equivalents 59.9 59.9 — — $ 135.6 $ 104.9 $ 30.7 $ — Liabilities: Derivative financial instruments $ 1.1 $ — $ 1.1 $ — Assets and liabilities measured at fair value on a recurring basis as of August 31, 2022 were: (in millions) Total Level 1 Level 2 (1) Level 3 Assets: Derivative financial instruments $ 21.4 $ — $ 21.4 $ — Nonqualified savings plan investments 40.3 40.3 — — Cash equivalents 119.4 119.4 — — $ 181.1 $ 159.7 $ 21.4 $ — Liabilities: Derivative financial instruments $ 3.0 $ — $ 3.0 $ — (1) Level 2 assets and liabilities include derivative financial instruments that are valued based on observable inputs. See Note 12 - Derivative Instruments for further discussion.

Related Party Transactions

Related Party Transactions	3 Months Ended
	Nov. 30, 2022
Related Party Transactions [Abstract]
Related Party Transactions	Note 17 – Related Party Transactions The Company has a 41.9 % interest in Axis, LLC (Axis), a joint venture. The Company purchased $ 2.7 million and $ 2.8 million of railcar components from Axis for the three months ended November 30, 2022 and 2021, respectively.

Subsequent Events

Subsequent Events	3 Months Ended
	Nov. 30, 2022
Subsequent Events [Abstract]
Subsequent Events	Note 18 – Subsequent Events In January 2023 the Company acquired The Longwood Group's minority interest in GBX Leasing, which includes a portfolio of leased railcars, manufactured primarily by the Company. Subsequent to this transaction, GBX Leasing will operate as a wholly-owned subsidiary of the Company under our Leasing & Management Services segment. The carrying value of the noncontrolling interest in GBXL was $ 8.3 million at November 30, 2022.

Revenue Recognition (Tables)

Revenue Recognition (Tables)	3 Months Ended
	Nov. 30, 2022
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 $ 1.0 $ 13.0 $ ( 12.0 ) Contract assets Inventories $ 7.5 $ 6.0 $ 1.5 Contract liabilities 1 Deferred revenue $ 49.2 $ 30.5 $ 18.7 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 $ 2,721.5 Manufacturing – Marine $ 55.6 Manufacturing – Sustainable conversions $ 151.6 Management services $ 122.0 Other $ 12.3 Manufacturing – Railcars intended for syndication 1 $ 469.0 1 Not a performance obligation as defined in Topic 606.

Inventories (Tables)

Inventories (Tables)	3 Months Ended
	Nov. 30, 2022
Inventory Disclosure [Abstract]
Components of Inventories	The following table summarizes the Company’s inventory balance: (in millions) November 30, August 31, Manufacturing supplies and raw materials $ 669.0 $ 570.2 Work-in-process 142.8 183.3 Finished goods 77.9 75.9 Excess and obsolete adjustment ( 14.8 ) ( 14.1 ) $ 874.9 $ 815.3

Intangibles and Other Assets,_2

Intangibles and Other Assets, net (Tables)	3 Months Ended
	Nov. 30, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Identifiable Intangible and Other Assets	The following table summarizes the Company’s identifiable intangible and other assets balance: (in millions) November 30, August 31, Intangible assets subject to amortization: Customer relationships $ 87.5 $ 87.5 Accumulated amortization ( 66.9 ) ( 66.1 ) Other intangibles 43.3 42.4 Accumulated amortization ( 18.0 ) ( 16.5 ) 45.9 47.3 Intangible assets not subject to amortization 2.4 2.4 Prepaid and other assets 34.9 32.4 Operating lease ROU assets 52.7 54.2 Nonqualified savings plan investments 45.0 40.3 Debt issuance costs, net 7.8 8.7 Assets held for sale 0.3 3.8 $ 189.0 $ 189.1

Revolving Notes (Tables)

Revolving Notes (Tables)	3 Months Ended
	Nov. 30, 2022
Debt Disclosure [Abstract]
Schedule of Credit Facility Balances	Credit facility balances: (in millions) November 30, August 31, North America $ 160.0 $ 160.0 Mexico 85.0 85.0 Europe 45.5 51.6 GBX Leasing — — Total Revolving notes $ 290.5 $ 296.6

Accounts Payable and Accrued _2

Accounts Payable and Accrued Liabilities (Tables)	3 Months Ended
	Nov. 30, 2022
Payables and Accruals [Abstract]
Accounts Payable and Accrued Liabilities	(in millions) November 30, August 31, Trade payables $ 386.2 $ 401.5 Other accrued liabilities 95.4 102.8 Operating lease liabilities 54.7 56.4 Accrued payroll and related liabilities 116.5 140.4 Accrued warranty 23.7 24.0 $ 676.5 $ 725.1

Warranty Accruals (Tables)

Warranty Accruals (Tables)	3 Months Ended
	Nov. 30, 2022
Guarantees and Product Warranties [Abstract]
Warranty Accrual Activity	Warranty accrual activity: Three Months Ended (in millions) 2022 2021 Balance at beginning of period $ 24.0 $ 27.9 Charged to cost of revenue, net 1.2 0.9 Payments ( 1.6 ) ( 1.0 ) Currency translation effect 0.1 ( 0.3 ) Balance at end of period $ 23.7 $ 27.5

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss (Tables)	3 Months Ended
	Nov. 30, 2022
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 Foreign Other Accumulated Balance, August 31, 2022 $ 13.0 $ ( 57.4 ) $ ( 1.2 ) $ ( 45.6 ) Other comprehensive gain before reclassifications 8.9 5.5 — 14.4 Amounts reclassified from Accumulated other ( 0.5 ) — — ( 0.5 ) Balance, November 30, 2022 $ 21.4 $ ( 51.9 ) $ ( 1.2 ) $ ( 31.7 )
Amounts Reclassified out of Accumulated Other Comprehensive Loss	The amounts reclassified out of Accumulated other comprehensive loss into the Consolidated Statements of Operations, with financial statement caption, were as follows: Three Months Ended (in millions) 2022 2021 Financial Statement Caption (Gain) loss on derivative financial instruments: Foreign exchange contracts $ 0.2 $ 1.3 Revenue and Cost of revenue Interest rate swap contracts ( 1.0 ) 0.2 Interest and foreign exchange ( 0.8 ) 1.5 Total before tax 0.3 ( 0.5 ) Income tax expense $ ( 0.5 ) $ 1.0 Net of tax

Earnings (Loss) Per Share (Tabl

Earnings (Loss) Per Share (Tables)	3 Months Ended
	Nov. 30, 2022
Earnings Per Share [Abstract]
Reconciliation of Shares Used in Computation of Basic and Diluted Earnings (Loss) Per Common Share	The shares used in the computation of basic and diluted earnings (loss) per common share are reconciled as follows: Three Months Ended (In thousands) 2022 2021 Weighted average basic common shares outstanding (1) 32,719 32,510 Dilutive effect of 2.875 % convertible notes due 2024 (3) — — Dilutive effect of 2.875 % convertible notes due 2028 (2)(4) — — Dilutive effect of restricted stock units (2) (5) — 1,060 Weighted average diluted common shares outstanding 32,719 33,570 (1) Restricted stock grants and restricted stock units that are considered participating securities, including some grants subject to certain performance criteria, are included in weighted average basic common shares outstanding when the Company is in a net earnings position. (2) The dilutive effect of common stock equivalents was excluded from the share calculation for the three months ended November 30, 2022 due to a net loss. (3) The dilutive effect of the 2.875 % Convertible notes due 2024 was excluded for the three months ended November 30, 2021 as they were considered anti-dilutive under the “if converted” method as further discussed below. (4) The dilutive effect of the 2.875 % Convertible notes due 2028 was excluded for the three months ended November 30, 2022 and 2021 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. (5) Restricted stock units that are not considered participating securities 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 (Loss) per Share	Three Months Ended (in millions, except shares which are reflected in thousands, and per share amounts) 2022 2021 Net earnings (loss) attributable to Greenbrier $ ( 16.7 ) $ 10.8 Weighted average basic common shares outstanding 32,719 32,510 Basic earnings (loss) per share $ ( 0.51 ) $ 0.33 Net earnings (loss) attributable to Greenbrier $ ( 16.7 ) $ 10.8 Add back: Interest and debt issuance costs on the 2.875 % n/a n/a Earnings before interest and debt issuance costs 2.875 % convertible notes due 2024 n/a n/a Weighted average diluted common shares outstanding 32,719 33,570 Diluted earnings (loss) per share $ ( 0.51 ) $ 0.32

Derivative Instruments (Tables)

Derivative Instruments (Tables)	3 Months Ended
	Nov. 30, 2022
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 Foreign forward Accounts receivable, $ 0.5 $ 0.6 Accounts payable and $ 1.1 $ 2.9 Interest rate swap Accounts receivable, 30.2 20.8 Accounts payable and — - $ 30.7 $ 21.4 $ 1.1 $ 2.9 Derivatives not Foreign forward Accounts receivable, $ — $ — Accounts payable and $ — $ 0.1
Effect of Derivative Instruments on the Statements of Operations	The Effect of Derivative Instruments on the Statements of Operations (in millions) Three Months Ended November 30, 2022 and 2021 Derivatives in cash flow hedging relationships Location of gain (loss) Gain (loss) recognized in income on 2022 2021 Foreign forward exchange contract Interest and foreign exchange $ — $ ( 0.3 ) Derivatives in Gain (loss) recognized Location of gain Gain (loss) reclassified Location of gain Gain (loss) recognized 2022 2021 2022 2021 2022 2021 Foreign $ 1.5 $ ( 4.6 ) Revenue $ ( 0.4 ) $ ( 0.2 ) Revenue $ 0.3 $ 0.2 Foreign 0.3 ( 1.3 ) Cost of 0.2 — Cost of 0.1 0.1 Interest rate 10.4 1.7 Interest and 1.0 ( 1.3 ) Interest and — — $ 12.2 $ ( 4.2 ) $ 0.8 $ ( 1.5 ) $ 0.4 $ 0.3
Effects of Cash Flow Hedges Included in Statements of Income	The following table presents the amounts in the Consolidated Statements of Operations 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, 2022 and 2021: For The Three Months Ended November 30, 2022 2021 Total Amount of gain Total Amount of gain Revenue $ 766.5 $ ( 0.4 ) $ 550.7 $ ( 0.2 ) Cost of revenue $ 697.0 $ 0.2 $ 503.1 $ — Interest and foreign exchange $ 19.6 $ 1.0 $ 12.6 $ ( 1.3 )

Segment Information (Tables)

Segment Information (Tables)	3 Months Ended
	Nov. 30, 2022
Segment Reporting [Abstract]
Segments Internal Financial Reports	The information in the following table is derived directly from the segments’ internal financial reports used for corporate management purposes. For the three months ended November 30, 2022: Revenue Earnings (loss) from operations (in millions) External Intersegment Total External Intersegment Total Manufacturing $ 646.5 $ 44.5 $ 691.0 $ ( 3.4 ) $ 4.0 $ 0.6 Maintenance Services 85.5 8.5 94.0 5.5 — 5.5 Leasing & Management Services 34.5 0.2 34.7 15.6 — 15.6 Eliminations — ( 53.2 ) ( 53.2 ) — ( 4.0 ) ( 4.0 ) Corporate — — — ( 22.5 ) — ( 22.5 ) $ 766.5 $ — $ 766.5 $ ( 4.8 ) $ — $ ( 4.8 ) For the three months ended November 30, 2021: Revenue Earnings (loss) from operations (in millions) External Intersegment Total External Intersegment Total Manufacturing $ 452.5 $ 39.4 $ 491.9 $ 12.3 $ 0.3 $ 12.6 Maintenance Services 72.4 2.7 75.1 ( 1.1 ) — ( 1.1 ) Leasing & Management Services 25.8 0.3 26.1 17.2 — 17.2 Eliminations — ( 42.4 ) ( 42.4 ) — ( 0.3 ) ( 0.3 ) Corporate — — — ( 16.6 ) — ( 16.6 ) $ 550.7 $ — $ 550.7 $ 11.8 $ — $ 11.8 Total assets (in millions) November 30, August 31, Manufacturing $ 1,861.7 $ 1,853.9 Maintenance Services 294.6 284.8 Leasing & Management Services 1,378.9 1,152.2 Unallocated, including cash 281.9 560.6 $ 3,817.1 $ 3,851.5
Reconciliation of Earnings (Loss) from Operations to Earnings (Loss) Before Income Tax and Earnings from Unconsolidated Affiliates	Reconciliation of Earnings (loss) from operations to Loss before income tax and earnings from unconsolidated affiliates: Three Months Ended (in millions) 2022 2021 Earnings (loss) from operations $ ( 4.8 ) $ 11.8 Interest and foreign exchange 19.6 12.6 Loss before income tax and earnings $ ( 24.4 ) $ ( 0.8 )

Leases (Tables)

Leases (Tables)	3 Months Ended
	Nov. 30, 2022
Leases [Abstract]
Aggregate Minimum Future Amounts Receivable Under All Non-Cancelable Operating Leases and Subleases	Aggregate minimum future amounts receivable under all non-cancelable operating leases and subleases at November 30, 2022, will mature as follows: (in millions) Remaining nine months of 2023 $ 39.1 2024 45.7 2025 37.2 2026 31.9 2027 27.9 Thereafter 55.6 $ 237.4
Components of Operating Lease Costs	The components of operating lease costs were as follows: Three Months Ended (in millions) 2022 2021 Operating lease expense $ 3.1 $ 2.7 Short-term lease expense 1.9 1.2 Total $ 5.0 $ 3.9
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, 2022 will mature as follows: (in millions) Remaining nine months of 2023 $ 9.9 2024 11.4 2025 8.6 2026 7.4 2027 4.7 Thereafter 17.7 Total lease payments $ 59.7 Less: Imputed interest ( 5.0 ) Total lease obligations $ 54.7
Additional Information Related to Company's Leases	The table below presents additional information related to the Company’s leases: Weighted average remaining lease term: Operating leases 11.0 Weighted average discount rate: Operating leases 2.1 %
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 Operating cash flows from operating leases $ 3.4 ROU assets obtained in exchange for new operating $ 0.8

Fair Value Measures (Tables)

Fair Value Measures (Tables)	3 Months Ended
	Nov. 30, 2022
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, 2022 were: (in millions) Total Level 1 Level 2 (1) Level 3 Assets: Derivative financial instruments $ 30.7 $ — $ 30.7 $ — Nonqualified savings plan investments 45.0 45.0 — — Cash equivalents 59.9 59.9 — — $ 135.6 $ 104.9 $ 30.7 $ — Liabilities: Derivative financial instruments $ 1.1 $ — $ 1.1 $ — Assets and liabilities measured at fair value on a recurring basis as of August 31, 2022 were: (in millions) Total Level 1 Level 2 (1) Level 3 Assets: Derivative financial instruments $ 21.4 $ — $ 21.4 $ — Nonqualified savings plan investments 40.3 40.3 — — Cash equivalents 119.4 119.4 — — $ 181.1 $ 159.7 $ 21.4 $ — Liabilities: Derivative financial instruments $ 3.0 $ — $ 3.0 $ — (1) Level 2 assets and liabilities include derivative financial instruments that are valued based on observable inputs. See Note 12 - Derivative Instruments for further discussion.

Interim Financial Statements -

Interim Financial Statements - Additional Information (Detail) - ASU 2020-04	Nov. 30, 2022
Equity Class Of Treasury Stock [Line Items]
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]	true
Change in Accounting Principle, Accounting Standards Update, Adoption Date	Dec. 31, 2022

Asset Backed Securities - Addit

Asset Backed Securities - Additional Information (Details) - USD ($) $ in Millions	Nov. 30, 2022	Aug. 31, 2022
Debt Instrument [Line Items]
Debt issuance costs, net	$ 7.8	$ 8.7

Asset Backed Securities - Summa

Asset Backed Securities - Summary of Net Carrying Amount of Assets Transferred and Related Debt (Details) - USD ($) $ in Millions	Nov. 30, 2022	Aug. 31, 2022	Nov. 30, 2021
Assets [Abstract]
Restricted cash	$ 17.2	$ 16.1	$ 27.1
Equipment on operating leases, net	836.2	770.9
Liabilities [Abstract]
Notes payable, net	$ 1,301.5	$ 1,269.1

Revenue Recognition - Summary o

Revenue Recognition - Summary of Contract Balances (Detail) - USD ($) $ in Millions		3 Months Ended
		Nov. 30, 2022	Aug. 31, 2022
Contract With Customer Asset And Liability [Line Items]
Contract liabilities	[1]	$ 49.2	$ 30.5
Change in contract liabilities	[1]	18.7
Accounts Receivable, Net
Contract With Customer Asset And Liability [Line Items]
Contract assets		1	13
Change in contract assets		(12)
Inventories
Contract With Customer Asset And Liability [Line Items]
Contract assets		7.5	$ 6
Change in contract assets		$ 1.5
[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) - USD ($) $ in Millions	3 Months Ended
	Nov. 30, 2022	Nov. 30, 2021
Revenue From Contract With Customers [Line Items]
Revenue recognized from contract with customers liability	$ 7.7	$ 9.6
Railcar sales
Revenue From Contract With Customers [Line Items]
Expected revenue recognized in the reminder of fiscal year	2,000
Management services
Revenue From Contract With Customers [Line Items]
Expected revenue recognized in the reminder of fiscal year	$ 122
Expected performance percentage	53%

Revenue Recognition - Summary_2

Revenue Recognition - Summary of Estimated Revenue Related to Performance Obligations (Detail) $ in Millions	Nov. 30, 2022 USD ($)
Railcar sales
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Revenue type 1	$ 2,000
Management services
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Revenue type 1	122
Other
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Revenue type 1	12.3
Manufacturing | Railcar sales
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Revenue type 1	2,721.5
Manufacturing | Marine
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Revenue type 1	55.6
Manufacturing | Sustainable conversions
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Revenue type 1	151.6
Manufacturing | Railcars intended for syndication
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Revenue type 1	$ 469	[1]
[1] Not a performance obligation as defined in Topic 606.

Inventories - Components of Inv

Inventories - Components of Inventories (Detail) - USD ($) $ in Millions	Nov. 30, 2022	Aug. 31, 2022
Inventory Disclosure [Abstract]
Manufacturing supplies and raw materials	$ 669	$ 570.2
Work-in-process	142.8	183.3
Finished goods	77.9	75.9
Excess and obsolete adjustment	(14.8)	(14.1)
Inventories	$ 874.9	$ 815.3

Intangibles and Other Assets,_3

Intangibles and Other Assets, Net - Identifiable Intangible and Other Assets (Detail) - USD ($) $ in Millions	Nov. 30, 2022	Aug. 31, 2022
Intangibles and Other Assets by Major Class [Line Items]
Finite-Lived Intangible Assets, Net, Total	$ 45.9	$ 47.3
Intangible assets not subject to amortization	2.4	2.4
Prepaid and other assets	34.9	32.4
Operating lease ROU assets	$ 52.7	$ 54.2
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Total Intangible and other assets, net	Total Intangible and other assets, net
Nonqualified savings plan investments	$ 45	$ 40.3
Debt issuance costs, net	7.8	8.7
Assets held for sale	0.3	3.8
Total Intangible and other assets, net	189	189.1
Customer Relationships
Intangibles and Other Assets by Major Class [Line Items]
Finite lived intangible assets gross	87.5	87.5
Accumulated amortization	(66.9)	(66.1)
Other Intangible Assets
Intangibles and Other Assets by Major Class [Line Items]
Finite lived intangible assets gross	43.3	42.4
Accumulated amortization	$ (18)	$ (16.5)

Gunderson Facility (Details)

Gunderson Facility (Details) - USD ($) $ in Millions	3 Months Ended
	Nov. 30, 2022	Jan. 05, 2023
Manufacturing
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment of long-lived assets	$ 24.2
Subsequent Event
Impaired Long-Lived Assets Held and Used [Line Items]
Carrying value of long-lived assets		$ 44
Fair value of long-lived assets		$ 19.8

Intangibles and Other Assets,_4

Intangibles and Other Assets, Net - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Nov. 30, 2022	Nov. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense	$ 2	$ 3.1
Future amortization expense, 2023	8.3
Future amortization expense, 2024	7.5
Future amortization expense, 2025	6.5
Future amortization expense, 2026	6.1
Future amortization expense, 2027	$ 5.3

Revolving Notes - Additional In

Revolving Notes - Additional Information (Detail)	3 Months Ended
	Nov. 30, 2022 USD ($) Facility CreditFacility	Aug. 31, 2022 USD ($)
Line of Credit Facility [Line Items]
Long-term line of credit	$ 290,500,000	$ 296,600,000
Number of lines of credits | CreditFacility	3
Senior Secured Credit Facilities, Consisting of 4 Components
Line of Credit Facility [Line Items]
Number of senior secured credit facilities | Facility	4
Line of credit facility maximum capacity	$ 1,100,000
Letter of credit facility outstanding amount	6,200,000	6,900,000
Senior Secured Credit Facilities, Consisting of 4 Components | North American
Line of Credit Facility [Line Items]
Long-term line of credit	160,000,000	160,000,000
Senior Secured Credit Facilities, Consisting of 4 Components | European
Line of Credit Facility [Line Items]
Long-term line of credit	45,500,000	51,600,000
Senior Secured Credit Facilities, Consisting of 4 Components | Mexican
Line of Credit Facility [Line Items]
Long-term line of credit	85,000,000	$ 85,000,000
Committed Credit Facilities
Line of Credit Facility [Line Items]
Aggregate amount available to draw down	213,400,000
Committed Credit Facilities | North American
Line of Credit Facility [Line Items]
Aggregate amount available to draw down	158,300,000
Committed Credit Facilities | European
Line of Credit Facility [Line Items]
Aggregate amount available to draw down	25,100,000
Committed Credit Facilities | Mexican
Line of Credit Facility [Line Items]
Aggregate amount available to draw down	30,000,000
Revolving Line of Credit, 1st Component of Senior Secured Credit Facilities
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 | Prime Rate
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
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
Line of Credit Facility [Line Items]
Debt instrument, percentage points added to the reference rate	0.10%
GBX Leasing Warehouse Facility
Line of Credit Facility [Line Items]
Line of credit facility maximum capacity	$ 350,000,000
Line of credit maturity date	2027-08
GBX Leasing Warehouse Facility | SOFR
Line of Credit Facility [Line Items]
Debt instrument, percentage points added to the reference rate	1.85%
GBX Leasing Warehouse Facility | SOFR Adjustment
Line of Credit Facility [Line Items]
Debt instrument, percentage points added to the reference rate	0.11%
European Line of Credit, 2nd Component of Senior Secured Credit Facilities
Line of Credit Facility [Line Items]
Line of credit facility maximum capacity	$ 70,500,000
Long-term line of credit	$ 34,200,000
European Line of Credit, 2nd Component of Senior Secured Credit Facilities | Minimum
Line of Credit Facility [Line Items]
Line of credit maturity date	2023-02
European Line of Credit, 2nd Component of Senior Secured Credit Facilities | Maximum
Line of Credit Facility [Line Items]
Line of credit maturity date	2024-09
European Line of Credit, 2nd Component of Senior Secured Credit Facilities | WIBOR | Minimum
Line of Credit Facility [Line Items]
Debt instrument, percentage points added to the reference rate	1.20%
European Line of Credit, 2nd Component of Senior Secured Credit Facilities | WIBOR | Maximum
Line of Credit Facility [Line Items]
Debt instrument, percentage points added to the reference rate	1.60%
European Line of Credit, 2nd Component of Senior Secured Credit Facilities | EURIBOR | Minimum
Line of Credit Facility [Line Items]
Debt instrument, percentage points added to the reference rate	1.10%
European Line of Credit, 2nd Component of Senior Secured Credit Facilities | EURIBOR | Maximum
Line of Credit Facility [Line Items]
Debt instrument, percentage points added to the reference rate	1.50%
Mexican Railcar Manufacturing Operations Line of Credit, 3rd Component of Senior Secured Credit Facilities
Line of Credit Facility [Line Items]
Line of credit facility maximum capacity	$ 115,000,000
Mexican Railcar Manufacturing Operations Line of Credit 1, 3rd Component of Senior Secured Credit Facilities
Line of Credit Facility [Line Items]
Line of credit facility maximum capacity	$ 30,000,000
Joint venture partner each guaranteed percentage	50%
Line of credit facility borrowings outstanding due period	2024-06
Mexican Railcar Manufacturing Operations Line of Credit 1, 3rd Component of Senior Secured Credit Facilities | LIBOR | Minimum
Line of Credit Facility [Line Items]
Debt instrument, percentage points added to the reference rate	3.75%
Mexican Railcar Manufacturing Operations Line of Credit 1, 3rd Component of Senior Secured Credit Facilities | LIBOR | Maximum
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
Line of Credit Facility [Line Items]
Line of credit facility maximum capacity	$ 35,000,000
Joint venture partner each guaranteed percentage	50%
Line of credit facility borrowings outstanding due period	2023-06
Mexican Railcar Manufacturing Operations Line of Credit 2, 3rd Component of Senior Secured Credit Facilities | LIBOR
Line of Credit Facility [Line Items]
Debt instrument, percentage points added to the reference rate	3.75%
Mexican Railcar Manufacturing Operations Line of Credit 3, 3rd Component of Senior Secured Credit Facilities
Line of Credit Facility [Line Items]
Line of credit facility maximum capacity	$ 50,000,000
Line of credit facility borrowings outstanding due period	2024-10
Mexican Railcar Manufacturing Operations Line of Credit 3, 3rd Component of Senior Secured Credit Facilities | LIBOR
Line of Credit Facility [Line Items]
Debt instrument, percentage points added to the reference rate	4.25%

Revolving Notes - Schedule of C

Revolving Notes - Schedule of Credit Facility Balances (Detail) - USD ($) $ in Millions	Nov. 30, 2022	Aug. 31, 2022
Line of Credit Facility [Line Items]
Revolving notes	$ 290.5	$ 296.6
Revolving Notes | North America
Line of Credit Facility [Line Items]
Revolving notes	160	160
Revolving Notes | Mexico
Line of Credit Facility [Line Items]
Revolving notes	85	85
Revolving Notes | Europe
Line of Credit Facility [Line Items]
Revolving notes	$ 45.5	$ 51.6

Accounts Payable and Accrued _3

Accounts Payable and Accrued Liabilities - Accounts Payable and Accrued Liabilities (Detail) - USD ($) $ in Millions	Nov. 30, 2022	Aug. 31, 2022	Nov. 30, 2021	Aug. 31, 2021
Payables and Accruals [Abstract]
Trade payables	$ 386.2	$ 401.5
Other accrued liabilities	95.4	102.8
Operating lease liabilities	$ 54.7	$ 56.4
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Accounts payable and accrued liabilities	Accounts payable and accrued liabilities
Accrued payroll and related liabilities	$ 116.5	$ 140.4
Accrued warranty	23.7	24	$ 27.5	$ 27.9
Accounts payable and accrued liabilities	$ 676.5	$ 725.1

Warranty Accruals - Warranty Ac

Warranty Accruals - Warranty Accrual Activity (Detail) - USD ($) $ in Millions	3 Months Ended
	Nov. 30, 2022	Nov. 30, 2021
Guarantees and Product Warranties [Abstract]
Balance at beginning of period	$ 24	$ 27.9
Charged to cost of revenue, net	1.2	0.9
Payments	(1.6)	(1)
Currency translation effect	0.1	(0.3)
Balance at end of period	$ 23.7	$ 27.5

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, 2022 USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 1,276.9
Ending balance	1,265.8
Unrealized Gain (Loss) on Derivative Financial Instruments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	13
Other comprehensive gain before reclassifications	8.9
Amounts reclassified from Accumulated other comprehensive loss	(0.5)
Ending balance	21.4
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(57.4)
Other comprehensive gain before reclassifications	5.5
Ending balance	(51.9)
Other
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(1.2)
Ending balance	(1.2)
Accumulated Other Comprehensive (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(45.6)
Other comprehensive gain before reclassifications	14.4
Amounts reclassified from Accumulated other comprehensive loss	(0.5)
Ending balance	$ (31.7)

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, 2022	Nov. 30, 2021
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Interest and foreign exchange	$ 19.6	$ 12.6
Total before tax	24.4	0.8
Income tax expense	(3.8)	(1.4)
Unrealized (Gain) Loss 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	(0.8)	1.5
Income tax expense	0.3	(0.5)
Net of tax	(0.5)	1
Unrealized (Gain) Loss 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	0.2	1.3
Unrealized (Gain) Loss 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	$ (1)	$ 0.2

Earnings (Loss) Per Share - Rec

Earnings (Loss) Per Share - Reconciliation of Shares Used in Computation of Basic and Diluted Earnings (Loss) Per Common Share (Detail) - shares shares in Thousands		3 Months Ended
		Nov. 30, 2022	Nov. 30, 2021
Earnings Per Share Disclosure [Line Items]
Weighted average basic common shares outstanding	[1]	32,719	32,510
Dilutive effect of restricted stock units	[2],[3]		1,060
Weighted average diluted common shares outstanding		32,719	33,570
[1] Restricted stock grants and restricted stock units that are considered participating securities, including some grants subject to certain performance criteria, are included in weighted average basic common shares outstanding when the Company is in a net earnings position. Restricted stock units that are not considered participating securities 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 common stock equivalents was excluded from the share calculation for the three months ended November 30, 2022 due to a net loss.

Earnings (Loss) Per Share - R_2

Earnings (Loss) Per Share - Reconciliation of Shares Used in Computation of Basic and Diluted Earnings (Loss) Per Common Share (Parenthetical) (Detail)	Nov. 30, 2022	Nov. 30, 2021
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%

Earnings (Loss) Per Share - Add

Earnings (Loss) Per Share - Additional Information (Detail)	Nov. 30, 2022	Nov. 30, 2021
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%

Earnings (Loss) Per Share - App

Earnings (Loss) Per Share - Approach to Calculate Diluted Earnings (Loss) Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions		3 Months Ended
		Nov. 30, 2022	Nov. 30, 2021
Earnings Per Share Disclosure [Line Items]
Net earnings (loss) attributable to Greenbrier		$ (16.7)	$ 10.8
Weighted average basic common shares outstanding	[1]	32,719	32,510
Basic earnings (loss) per common share		$ (0.51)	$ 0.33
Net earnings (loss) attributable to Greenbrier		$ (16.7)	$ 10.8
Weighted average diluted common shares outstanding		32,719	33,570
Diluted earnings (loss) per common share		$ (0.51)	$ 0.32
[1] Restricted stock grants and restricted stock units that are considered participating securities, including some grants subject to certain performance criteria, are included in weighted average basic common shares outstanding when the Company is in a net earnings position.

Earnings (Loss) Per Share - A_2

Earnings (Loss) Per Share - Approach to Calculate Diluted Earnings (Loss) Per Share (Parenthetical) (Detail)	Nov. 30, 2022	Nov. 30, 2021
2.875% Convertible senior notes, due 2024
Earnings Per Share Disclosure [Line Items]
Debt instrument, interest rate	2.875%	2.875%

Stock Based Compensation - Addi

Stock Based Compensation - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Nov. 30, 2022	Nov. 30, 2021
Share-Based Payment Arrangement [Abstract]
Stock based compensation expense	$ 3.2	$ 1.1

Derivative Instruments - Additi

Derivative Instruments - Additional Information (Detail) $ in Millions	3 Months Ended
	Nov. 30, 2022 USD ($)
Foreign Exchange Contracts
Derivative [Line Items]
Aggregate derivative notional amount	$ 77.4
Amount reclassified to revenue or cost of revenue in the next year	1.8
Interest rate swap contracts
Derivative [Line Items]
Unrealized pre-tax gain (loss) that would be reclassified to interest expense in the next year	11.6
Interest rate swap contracts | Derivatives maturing from September 2023 through January 2032
Derivative [Line Items]
Aggregate derivative notional amount	$ 473.6
Interest rate swap contracts | Derivatives maturing from September 2023 through January 2032 | Minimum
Derivative [Line Items]
Maturity date	2023-09
Interest rate swap contracts | Derivatives maturing from September 2023 through January 2032 | Maximum
Derivative [Line Items]
Maturity date	2032-01

Derivative Instruments - Fair V

Derivative Instruments - Fair Values of Derivative Instruments (Detail) - USD ($) $ in Millions	Nov. 30, 2022	Aug. 31, 2022
Designated as Hedging Instrument
Derivatives Fair Value [Line Items]
Asset Derivatives	$ 30.7	$ 21.4
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	$ 2.9
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Accounts Payable and Accrued Liabilities	Accounts Payable and Accrued Liabilities
Designated as Hedging Instrument | Foreign Exchange Contracts
Derivatives Fair Value [Line Items]
Asset Derivatives	$ 0.5	$ 0.6
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	$ 2.9
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Accounts Payable and Accrued Liabilities	Accounts Payable and Accrued Liabilities
Designated as Hedging Instrument | Interest rate swap contracts
Derivatives Fair Value [Line Items]
Asset Derivatives	$ 30.2	$ 20.8
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Accounts Receivable, after Allowance for Credit Loss	Accounts Receivable, after Allowance for Credit Loss
Not Designated as Hedging Instrument | Foreign Exchange Contracts
Derivatives Fair Value [Line Items]
Liability Derivatives		$ 0.1
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 Operations (Detail) - Cash Flow Hedging - USD ($) $ in Millions	3 Months Ended
	Nov. 30, 2022	Nov. 30, 2021
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in OCI on derivatives	$ 12.2	$ 4.2
Gain (loss) reclassified from accumulated OCI into income	(0.8)	(1.5)
Gain (loss) recognized on derivative (amount excluded from effectiveness testing)	$ 0.4	0.3
Foreign Exchange Forward
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income on derivatives		$ 0.3
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Interest And Foreign Exchange Net	Interest And Foreign Exchange Net
Foreign Exchange Forward | Sales
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in OCI on derivatives	$ 1.5	$ 4.6
Gain (loss) reclassified from accumulated OCI into income	(0.4)	(0.2)
Gain (loss) recognized on derivative (amount excluded from effectiveness testing)	$ 0.3	$ 0.2
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 Forward | Cost Of Revenue
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in OCI on derivatives	$ 0.3	$ 1.3
Gain (loss) reclassified from accumulated OCI into income	0.2	0
Gain (loss) recognized on derivative (amount excluded from effectiveness testing)	$ 0.1	$ 0.1
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	$ 10.4	$ 1.7
Gain (loss) reclassified from accumulated OCI into income	$ 1	$ (1.3)
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, 2022	Nov. 30, 2021
Derivative [Line Items]
Revenue	$ 766.5	$ 550.7
Cost of revenue	697	503.1
Interest and foreign exchange	19.6	12.6
Sales
Derivative [Line Items]
Amount of gain (loss) on cash flow hedge activity	(0.4)	(0.2)
Cost of Sales
Derivative [Line Items]
Amount of gain (loss) on cash flow hedge activity	0.2
Interest and Foreign Exchange
Derivative [Line Items]
Amount of gain (loss) on cash flow hedge activity	$ (1)	$ (1.3)

Segment Information - Additiona

Segment Information - Additional Information (Detail)	3 Months Ended
	Nov. 30, 2022 Segment
Segment Reporting [Abstract]
Number of reportable segments	3

Segment Information - Segments

Segment Information - Segments Internal Financial Reports (Detail) - USD ($) $ in Millions	3 Months Ended
	Nov. 30, 2022	Nov. 30, 2021	Aug. 31, 2022
Segment Reporting Information [Line Items]
Revenue	$ 766.5	$ 550.7
Earnings (loss) from operations	(4.8)	11.8
Assets	3,817.1		$ 3,851.5
Manufacturing
Segment Reporting Information [Line Items]
Revenue	646.5	452.5
Maintenance Services
Segment Reporting Information [Line Items]
Revenue	85.5	72.4
Leasing & Management Services
Segment Reporting Information [Line Items]
Revenue	34.5	25.8
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Earnings (loss) from operations	(22.5)	(16.6)
Intersegment Eliminations
Segment Reporting Information [Line Items]
Revenue	(53.2)	(42.4)
Earnings (loss) from operations	(4)	(0.3)
Intersegment Eliminations | Manufacturing
Segment Reporting Information [Line Items]
Revenue	44.5	39.4
Earnings (loss) from operations	4	0.3
Intersegment Eliminations | Maintenance Services
Segment Reporting Information [Line Items]
Revenue	8.5	2.7
Intersegment Eliminations | Leasing & Management Services
Segment Reporting Information [Line Items]
Revenue	0.2
Operating Segments
Segment Reporting Information [Line Items]
Earnings (loss) from operations	(4.8)
Operating Segments | Manufacturing
Segment Reporting Information [Line Items]
Revenue	691	491.9
Earnings (loss) from operations	0.6	12.6
Assets	1,861.7		1,853.9
Operating Segments | Maintenance Services
Segment Reporting Information [Line Items]
Revenue	94	75.1
Earnings (loss) from operations	5.5	1.1
Assets	294.6		284.8
Operating Segments | Leasing & Management Services
Segment Reporting Information [Line Items]
Revenue	34.7	26.1
Earnings (loss) from operations	15.6	17.2
Assets	1,378.9		1,152.2
Operating Segments | Unallocated, including cash
Segment Reporting Information [Line Items]
Assets	281.9		$ 560.6
Reconciling Items | Manufacturing
Segment Reporting Information [Line Items]
Earnings (loss) from operations	(3.4)	12.3
Reconciling Items | Maintenance Services
Segment Reporting Information [Line Items]
Earnings (loss) from operations	5.5	1.1
Reconciling Items | Leasing & Management Services
Segment Reporting Information [Line Items]
Earnings (loss) from operations	$ 15.6	$ 17.2

Segment Information - Reconcili

Segment Information - Reconciliation of Earnings (Loss) from Operations to Earnings (Loss) Before Income Tax and Earnings from Unconsolidated Affiliates (Detail) - USD ($) $ in Millions	3 Months Ended
	Nov. 30, 2022	Nov. 30, 2021
Segment Reporting [Abstract]
Earnings (loss) from operations	$ (4.8)	$ 11.8
Interest and foreign exchange	19.6	12.6
Loss before income tax and earnings from unconsolidated affiliates	$ (24.4)	$ (0.8)

Leases - Additional Information

Leases - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Nov. 30, 2022	Nov. 30, 2021	Aug. 31, 2022
Lessor and Lessee, Lease, Description [Line Items]
Finance lease option to extend	options to extend up to 15 years
Car Hire Utilization Arrangements
Lessor and Lessee, Lease, Description [Line Items]
Operating lease rental revenues	$ 4.8	$ 4.5
Leasing & Management Services
Lessor and Lessee, Lease, Description [Line Items]
Operating lease rental revenues	$ 19.6	$ 15
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
Minimum
Lessor and Lessee, Lease, Description [Line Items]
Sublease period	1 year
Financing lease remaining lease term	1 year
Maximum
Lessor and Lessee, Lease, Description [Line Items]
Sublease period	13 years
Financing lease remaining lease term	76 years
Equipment on Operating Lease
Lessor and Lessee, Lease, Description [Line Items]
Accumulated depreciation	$ 54		$ 48.6
Depreciation expense	$ 6	$ 5.1

Leases - Aggregate Minimum Futu

Leases - Aggregate Minimum Future Amounts Receivable Under All Non-Cancelable Operating Leases and Subleases (Detail) $ in Millions	Nov. 30, 2022 USD ($)
Leases [Abstract]
Remaining nine months of 2023	$ 39.1
2024	45.7
2025	37.2
2026	31.9
2027	27.9
Thereafter	55.6
Operating Leases, Future Minimum Payments Receivable, Total	$ 237.4

Leases - Components of Operatin

Leases - Components of Operating Lease Costs (Detail) - USD ($) $ in Millions	3 Months Ended
	Nov. 30, 2022	Nov. 30, 2021
Leases [Abstract]
Operating lease expense	$ 3.1	$ 2.7
Short-term lease expense	1.9	1.2
Total	$ 5	$ 3.9

Leases - Aggregate Minimum Fu_2

Leases - Aggregate Minimum Future Amounts Payable Under Operating Leases (Detail) - USD ($) $ in Millions	Nov. 30, 2022	Aug. 31, 2022
Leases [Abstract]
Remaining nine months of 2023	$ 9.9
2024	11.4
2025	8.6
2026	7.4
2027	4.7
Thereafter	17.7
Total lease payments	59.7
Less: Imputed interest	(5)
Operating Lease, Liability	$ 54.7	$ 56.4
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, 2022
Leases [Abstract]
Weighted average remaining lease term	11 years
Weighted average discount rate	2.10%

Leases - Supplemental Cash Flow

Leases - Supplemental Cash Flow Information Related to Leases (Detail) $ in Millions	3 Months Ended
	Nov. 30, 2022 USD ($)
Cash Flow, Operating Activities, Lessee [Abstract]
Operating cash flows from operating leases	$ 3.4
ROU assets obtained in exchange for new operating lease liabilities	$ 0.8

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($)		204 Months Ended
	Jan. 06, 2017	Dec. 31, 2016	Nov. 30, 2022
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			$ 6,200,000
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, 2022	Aug. 31, 2022
Assets:
Nonqualified savings plan investments		$ 45	$ 40.3
Fair Value, Measurements, Recurring
Assets:
Derivative financial instruments		30.7	21.4
Nonqualified savings plan investments		45	40.3
Cash equivalents		59.9	119.4
Assets, Fair Value Disclosure, Total		135.6	181.1
Liabilities:
Derivative financial instruments		1.1	3
Fair Value, Inputs, Level 1 | Fair Value, Measurements, Recurring
Assets:
Nonqualified savings plan investments		45	40.3
Cash equivalents		59.9	119.4
Assets, Fair Value Disclosure, Total		104.9	159.7
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring
Assets:
Derivative financial instruments	[1]	30.7	21.4
Assets, Fair Value Disclosure, Total	[1]	30.7	21.4
Liabilities:
Derivative financial instruments	[1]	$ 1.1	$ 3
[1] Level 2 assets and liabilities include derivative financial instruments that are valued based on observable inputs. See Note 12 - Derivative Instruments for further discussion.

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail) - Axis LLC - USD ($) $ in Millions	3 Months Ended
	Nov. 30, 2022	Nov. 30, 2021
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	$ 2.7	$ 2.8

Subsequent Events - Additional

Subsequent Events - Additional Information (Detail) $ in Millions	Nov. 30, 2022 USD ($)
GBX Leasing
Subsequent Event [Line Items]
Carrying value of noncontrolling interest	$ 8.3