Line of credit, guaranteed amount.

No definition available.

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- Definition

Line of Credit Maturity Month and Year

+ References

No definition available.

+ Details

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- Definition

Percentage Of Joint Venture Debt Guaranteed

+ References

No definition available.

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- Definition

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

+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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-SubTopic 605
-Name Accounting Standards Codification
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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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+ Details

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- Definition

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

+ References

+ Details

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Namespace Prefix:	us-gaap_
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- Definition

Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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- Definition

Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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- Definition

Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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Revolving Notes - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Aug. 31, 2026	Aug. 31, 2025
Line of Credit Facility [Line Items]
Repayments of revolving notes in 2025	$ 181.7
Repayments of revolving notes in 2026	445.4
Repayments of revolving notes in 2027	41.9
European
Line of Credit Facility [Line Items]
Line of credit, guaranteed amount	59.0
Mexican
Line of Credit Facility [Line Items]
Line of credit facility maximum capacity	$ 56.0
Minimum \| European
Line of Credit Facility [Line Items]
Line of credit maturity date	2026-10
Minimum \| Mexican
Line of Credit Facility [Line Items]
Line of credit maturity date	2027-01
Maximum \| European
Line of Credit Facility [Line Items]
Line of credit maturity date	2028-09
Maximum \| Mexican
Line of Credit Facility [Line Items]
Line of credit maturity date	2029-07
WIBOR \| Minimum \| European
Line of Credit Facility [Line Items]
Debt instrument, percentage points added to the reference rate	1.20%
WIBOR \| Maximum \| European
Line of Credit Facility [Line Items]
Debt instrument, percentage points added to the reference rate	1.25%
EURIBOR \| Minimum \| European
Line of Credit Facility [Line Items]
Debt instrument, percentage points added to the reference rate	1.00%
EURIBOR \| Maximum \| European
Line of Credit Facility [Line Items]
Debt instrument, percentage points added to the reference rate	1.90%
Revolving Line of Credit, 1st Component of Senior Secured Credit Facilities \| North American
Line of Credit Facility [Line Items]
Line of credit facility maximum capacity	$ 600.0
Aggregate amount available to draw down	428.5
Letter of credit facility outstanding amount	51.1	$ 5.4
Revolving Line of Credit, 1st Component of Senior Secured Credit Facilities \| European
Line of Credit Facility [Line Items]
Line of credit facility maximum capacity	130.5
Aggregate amount available to draw down	37.7
Revolving Line of Credit, 1st Component of Senior Secured Credit Facilities \| Mexican
Line of Credit Facility [Line Items]
Line of credit facility maximum capacity	156.0
Aggregate amount available to draw down	$ 136.0
Joint venture partner each guaranteed percentage	50.00%
Revolving Line of Credit, 1st Component of Senior Secured Credit Facilities \| Maximum \| North American
Line of Credit Facility [Line Items]
Line of credit maturity date	2030-05
Revolving Line of Credit, 1st Component of Senior Secured Credit Facilities \| Prime Rate \| North American
Line of Credit Facility [Line Items]
Debt instrument, percentage points added to the reference rate	0.50%
Mexican Railcar Manufacturing Operations Line of Credit 1, 3rd Component of Senior Secured Credit Facilities \| Mexican
Line of Credit Facility [Line Items]
Debt instrument, percentage points added to the reference rate	3.80%
Mexican Railcar Manufacturing Operations Line of Credit 2, 3rd Component of Senior Secured Credit Facilities \| Mexican
Line of Credit Facility [Line Items]
Debt instrument, percentage points added to the reference rate	2.00%