Inventories - Summarization of Inventories (Detail) - USD ($) $ in Millions |
Oct. 31, 2016 |
Oct. 31, 2015 |
|---|---|---|
| Inventory Disclosure [Abstract] | ||
| Finished goods | $ 79.8 | $ 88.0 |
| Raw materials | 185.4 | 190.7 |
| Work-in process | 12.2 | 18.3 |
| Inventories, Net | $ 277.4 | $ 297.0 |