Insurance - Standby Letters of Credit, Surety Bonds and Restricted Insurance Deposits Outstanding to Collateralize Self-Insurance Obligations (Details) - USD ($) $ in Millions |
Oct. 31, 2016 |
Oct. 31, 2015 |
|---|---|---|
| Letters Of Credit [Line Items] | ||
| Total Instruments Used To Collateralize Insurance Obligations | $ 186.7 | $ 172.7 |
| Standby letters of credit | ||
| Letters Of Credit [Line Items] | ||
| Instruments Used To Collateralize Insurance Obligations | 118.3 | 105.4 |
| Surety bonds | ||
| Letters Of Credit [Line Items] | ||
| Instruments Used To Collateralize Insurance Obligations | 57.2 | 55.9 |
| Restricted insurance deposits | ||
| Letters Of Credit [Line Items] | ||
| Instruments Used To Collateralize Insurance Obligations | $ 11.2 | $ 11.4 |