v3.26.1
Segment Information - Segments Internal Financial Reports (Detail) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
May 31, 2026
May 31, 2025
May 31, 2026
May 31, 2025
Aug. 31, 2025
Segment Reporting Information [Line Items]          
Revenue $ 576.5 $ 842.7 $ 1,870.1 $ 2,480.7  
Total consolidated revenues 576.5 842.7 1,870.1 2,480.7  
Cost of Revenue 495.4 691.2 1,616.2 2,017.0  
Margin 81.1 151.5 253.9 463.7  
Selling and administrative 55.2 65.9 172.5 192.5  
Net gain on disposition of equipment (6.0) (7.0) (36.7) (16.8)  
Earnings (loss) from operations 31.9 92.6 118.1 288.0  
Assets 4,348.2   4,348.2   $ 4,360.6
Depreciation and amortization 32.1 29.7 96.1 89.3  
Capital expenditures 59.6 82.7 147.2 209.1  
Manufacturing          
Segment Reporting Information [Line Items]          
Revenue 529.1 793.4 1,727.6 2,337.2  
Cost of Revenue 476.6 672.6 1,561.9 1,964.2  
Margin 52.5 120.8 165.7 373.0  
Selling and administrative 22.4 22.7 66.4 72.7  
Net gain on disposition of equipment (0.3) (0.4) (0.4) (0.6)  
Leasing & Fleet Management          
Segment Reporting Information [Line Items]          
Revenue 47.4 49.3 142.5 143.5  
Cost of Revenue 18.8 18.6 54.3 52.8  
Margin 28.6 30.7 88.2 90.7  
Selling and administrative 5.1 6.5 15.8 19.6  
Net gain on disposition of equipment (5.7) (6.6) (36.3) (16.2)  
Intersegment Eliminations          
Segment Reporting Information [Line Items]          
Revenue (10.5) 15.2 (30.8) 71.7  
Cost of Revenue 10.5 13.7 30.8 60.5  
Margin   (1.5)   (11.2)  
Intersegment Eliminations | Manufacturing          
Segment Reporting Information [Line Items]          
Revenue 10.4 15.2 30.6 71.3  
Cost of Revenue 10.4 13.7 30.6 60.1  
Margin   (1.5)   (11.2)  
Intersegment Eliminations | Leasing & Fleet Management          
Segment Reporting Information [Line Items]          
Revenue 0.1 0.0 0.2 0.4  
Cost of Revenue 0.1 0.0 0.2 0.4  
Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 587.0 857.9 1,900.9 2,552.4  
Cost of Revenue 505.9 704.9 1,647.0 2,077.5  
Earnings (loss) from operations 59.6 129.3 208.4 388.2  
Operating Segments | Manufacturing          
Segment Reporting Information [Line Items]          
Revenue 539.5 808.6 1,758.2 2,408.5  
Cost of Revenue 487.0 686.3 1,592.5 2,024.3  
Earnings (loss) from operations 30.4 98.5 99.7 300.9  
Assets 1,948.3   1,948.3   2,085.9
Depreciation and amortization 21.5 19.0 63.7 57.1  
Capital expenditures 50.6 20.0 88.5 107.9  
Operating Segments | Leasing & Fleet Management          
Segment Reporting Information [Line Items]          
Revenue 47.5 49.3 142.7 143.9  
Cost of Revenue 18.9 18.6 54.5 53.2  
Earnings (loss) from operations 29.2 30.8 108.7 87.3  
Assets 2,015.7   2,015.7   1,858.4
Depreciation and amortization 10.6 10.7 32.4 32.2  
Capital expenditures 9.0 62.7 58.7 101.2  
Operating Segments | Unallocated, including cash          
Segment Reporting Information [Line Items]          
Assets 384.2   384.2   $ 416.3
Operating Segments | Intersegment Eliminations          
Segment Reporting Information [Line Items]          
Revenue $ (10.5) $ (15.2) $ (30.8) $ (71.7)