Inventories - Components of Inventories (Detail) - USD ($) $ in Millions |
Aug. 31, 2026 |
Aug. 31, 2025 |
|---|---|---|
| Inventory Disclosure [Abstract] | ||
| Manufacturing supplies and raw materials | $ 425.5 | $ 439.4 |
| Work-in-process | 163.4 | 158.9 |
| Finished goods | 161.0 | 97.7 |
| Excess and obsolete adjustment | (7.8) | (7.7) |
| Inventories | $ 742.1 | $ 688.3 |
| X | ||||||||||
- Definition Amount of inventory reserves for last-in first-out (LIFO) and other inventory valuation methods. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Gross amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|