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Divestitures - Additional Information (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Aug. 31, 2024 | Aug. 31, 2023 | Aug. 31, 2022 | Jan. 05, 2023
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |  |
Asset impairment, disposal, and exit costs, net |  | $ 46,700,000 |  |
Gunderson |  |  |  |
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |  |
Carrying value of long-lived assets |  |  |  | $ 44,000,000
Fair value of long-lived assets |  |  |  | $ 19,800,000
Rayvag |  |  |  |
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |  |
Interest in joint venture |  | 68.00% |  |
Asset impairment, disposal, and exit costs, net | $ 0 | $ 46,700,000 | $ 0 |
Manufacturing | Gunderson |  |  |  |
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |  |
Impairment of long-lived assets |  | 24,200,000 |  |
Gain (loss) on sale |  | (14,400,000) |  |
Severance |  | 2,100,000 |  |
Manufacturing | Southwest Steel |  |  |  |
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |  |
Gain (loss) on sale |  | (9,700,000) |  |
Manufacturing | Rayvag |  |  |  |
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |  |
Gain (loss) on sale |  | $ 3,700,000 |  |

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