Insurance - Instruments Used to Collateralize Insurance Obligations (Details) - USD ($) $ in Millions |
Apr. 30, 2020 |
Oct. 31, 2019 |
---|---|---|
Letters Of Credit [Line Items] | ||
Instruments used to collateralize insurance obligations | $ 229.7 | $ 232.6 |
Standby letters of credit | ||
Letters Of Credit [Line Items] | ||
Instruments used to collateralize insurance obligations | 143.6 | 141.0 |
Surety bonds | ||
Letters Of Credit [Line Items] | ||
Instruments used to collateralize insurance obligations | 85.4 | 90.8 |
Restricted insurance deposits | ||
Letters Of Credit [Line Items] | ||
Instruments used to collateralize insurance obligations | $ 0.7 | $ 0.8 |