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v3.22.2.2

Related Party Transactions - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Aug. 31, 2022 | Aug. 31, 2021 | Aug. 31, 2020
Related Party Transaction [Line Items] |  |  |
Carrying amount of investment in unconsolidated affiliates | $ 0.7 | $ 3.2 |
Percentage of recognized revenue and margin from sale | 60.00% |  |
Percentage of deferred revenue and margin from sale | 40.00% |  |
Revenue recognized associated with railcars sold |  |  | $ 4.7
Related party expenses | $ 0.9 | 0.2 | 0.3
Dividends paid to joint venture partner | $ 16.9 | 25.3 | 38.9
Axis LLC |  |  |
Related Party Transaction [Line Items] |  |  |
Percentage of ownership in entity | 41.90% |  |
Greenbrier |  |  |
Related Party Transaction [Line Items] |  |  |
Percentage of ownership in entity | 40.00% |  |
Amsted-Maxion Cruzeiro |  |  |
Related Party Transaction [Line Items] |  |  |
Percentage of ownership in entity | 29.50% |  |
Note receivable |  |  | 4.5
Greenbrier-Maxion |  |  |
Related Party Transaction [Line Items] |  |  |
Percentage of ownership in entity | 60.00% |  |
Note receivable |  |  | 3.8
Leasing Warehouse |  |  |
Related Party Transaction [Line Items] |  |  |
Revenue recognized associated with railcars sold | $ 9.3 |  |
Railcar Components | Axis LLC |  |  |
Related Party Transaction [Line Items] |  |  |
Purchases of goods from related party | $ 11.5 | $ 13.5 | 12.7
Joint Venture Agreement |  |  |
Related Party Transaction [Line Items] |  |  |
Dividends paid to joint venture partner |  |  | $ 22.5

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