| Fiscal period | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 |
| Period End Date | 8/31/2025 | 8/31/2024 | 8/31/2023 | 8/31/2022 | 8/31/2021 | 8/31/2020 | 8/31/2019 | 8/31/2018 | 8/31/2017 | 8/31/2016 |
| Manufacturing | 2,991.20 | 3,013.60 | 3,357.70 | 2,476.60 | 1,329.99 | 2,349.97 | 2,431.50 | 2,044.59 | 1,725.19 | 2,096.33 |
| Maintenance Services | -- | 298.80 | 406.40 | 347.70 | 298.33 | 324.67 | 444.50 | 347.02 | 312.68 | 322.40 |
| Leasing & Management Services | 249.00 | 232.30 | 179.90 | 153.40 | 119.66 | 117.55 | 157.59 | 127.86 | 131.30 | 260.80 |
| Total Revenues | 3,240.20 | 3,544.70 | 3,944.00 | 2,977.70 | 1,747.98 | 2,792.19 | 3,033.59 | 2,519.46 | 2,169.16 | 2,679.52 |
| Cost of revenue:Manufacturing | 2,556.60 | 2,648.90 | 3,083.40 | 2,300.90 | 1,189.25 | 2,065.17 | 2,137.63 | 1,727.41 | 1,373.97 | 1,630.55 |
| Cost of revenue:Maintenance Services | -- | 264.10 | 364.00 | 322.00 | 280.39 | 302.19 | 420.89 | 318.33 | 288.34 | 293.75 |
| Cost of revenue:Leasing & Management Services | 76.10 | 73.20 | 55.50 | 48.80 | 46.74 | 71.70 | 108.59 | 64.67 | 85.56 | 203.78 |
| Gross Profit | 607.50 | 558.50 | 441.10 | 306.00 | 231.61 | 353.13 | 366.49 | 409.06 | 421.30 | 551.44 |
| Goodwill impairment | -- | -- | -- | -- | -- | -- | 10.03 | -- | -- | -- |
| Selling and administrative | 263.30 | 247.10 | 235.30 | 225.20 | 191.81 | 204.71 | 213.31 | 200.44 | 170.61 | 158.68 |
| Restructuring charges | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Special charges | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Gain (loss) on disposition of equipment | 15.90 | 13.10 | 17.30 | 37.20 | 1.18 | 20.00 | 40.96 | 44.37 | 9.74 | 15.80 |
| Gain on contribution to joint venture | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Asset impairment, disposal, and exit costs, net | -- | -- | (46.70) | -- | -- | -- | -- | -- | -- | -- |
| Earnings (loss) from operations | 360.10 | 324.50 | 176.40 | 118.00 | 40.97 | 168.43 | 184.12 | 252.99 | 260.43 | 408.55 |
| Interest and foreign exchange | 75.70 | 100.80 | 85.40 | 57.40 | 43.26 | 43.62 | 30.91 | 29.37 | 24.19 | 13.50 |
| Loss (gain)on extinguishment of debt | -- | -- | -- | -- | (6.29) | -- | -- | -- | -- | -- |
| Pre-Tax Income | 284.40 | 223.70 | 91.00 | 60.60 | (8.58) | 124.81 | 153.20 | 223.62 | 236.24 | 395.05 |
| Current-State | -- | 2.20 | 2.70 | 0.90 | 1.85 | 0.79 | 4.78 | 3.24 | 0.31 | 4.60 |
| Current- Foreign | -- | 38.80 | 9.70 | 19.20 | 4.32 | 25.35 | 37.39 | 38.63 | 35.89 | 50.30 |
| Deferred- Foreign | -- | (2.00) | (3.40) | 1.60 | (3.36) | 0.50 | (8.43) | (3.69) | (2.73) | (1.64) |
| Deferred:Federal | -- | 14.60 | 7.90 | 2.20 | 54.11 | (8.29) | (8.56) | (33.46) | 9.42 | (6.20) |
| Deferred:State | -- | 0.10 | 0.60 | 1.40 | (2.35) | 0.69 | (2.54) | (0.34) | (1.47) | (1.17) |
| Change in valuation allowance | -- | 6.30 | (0.30) | (0.50) | 1.09 | 0.12 | 0.06 | -- | (0.11) | (0.01) |
| Income tax expense (benefit) | 91.40 | 62.00 | 24.60 | 18.10 | (40.22) | 40.18 | 41.59 | 32.89 | 64.01 | 112.32 |
| Current-Federal | -- | 2.00 | 7.40 | (6.70) | (95.88) | 21.04 | 18.89 | 28.36 | 22.71 | 66.46 |
| Minority interest | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Equity in earnings (loss)of unconsolidated subsidiary | 20.10 | 11.00 | 9.20 | 11.30 | 3.49 | 2.96 | (5.81) | (18.66) | (11.76) | 2.10 |
| Earnings (loss) from continuing operations | 213.10 | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Earnings (loss) from discontinued operations (net of tax) | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Net income (loss) before attributable to noncontrolling interest | 213.10 | 172.70 | 75.60 | 53.80 | 35.13 | 87.59 | 105.81 | 172.06 | 160.46 | 284.82 |
| Net (earnings) loss attributable to noncontrolling interest | 9.00 | 12.60 | 13.10 | 6.90 | 2.66 | 38.62 | 34.74 | 20.28 | 44.40 | 101.61 |
| Net Income (loss) Available to Common Shareholders | 204.10 | 160.10 | 62.50 | 46.90 | 32.48 | 48.97 | 71.08 | 151.78 | 116.07 | 183.21 |
| Net earnings (loss) attributable to Greenbrier | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Interest and debt issuance costs on the 2018 Convertible notes, net of tax | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Earnings before interest and debt issuance costs on convertible notes | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Earnings Per Share (Basic) - Cont Ops | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| EPS (Basic) : Disc Ops | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Net Earnings Per Share (Basic) | 6.55 | 5.15 | 1.95 | 1.44 | 0.99 | 1.50 | 2.18 | 4.92 | 3.97 | 6.28 |
| Earnings Per Share (Diluted) - Cont Ops | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Earnings Per Share (Diluted) - Disc Ops | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Net Earnings Per Share (Diluted) | 6.35 | 4.96 | 1.89 | 1.40 | 0.96 | 1.46 | 2.14 | 4.68 | 3.65 | 5.73 |
| Weighted Average Shares Outstanding (Basic) | 31.17 | 31.10 | 31.98 | 32.57 | 32.65 | 32.67 | 32.62 | 30.86 | 29.23 | 29.16 |
| Weighted Average Shares Outstanding (Diluted) | 32.14 | 32.36 | 33.80 | 33.63 | 33.67 | 33.44 | 33.17 | 32.84 | 32.56 | 32.47 |