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Insurance (Tables) | 12 Months Ended
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Oct. 31, 2019
Insurance [Abstract] |
Schedule of Insurance Related Balances and Activity | Insurance Related Balances and Activity
(in millions) | October 31, 2019 |  | October 31, 2018
Insurance claim reserves, excluding medical and dental | $ | 507.8 |  |  | $ | 501.4 |
Medical and dental claim reserves | 7.2 |  |  | 8.9 |
Insurance recoverables | 64.5 |  |  | 73.7 |
Schedule of Casualty Program Insurance Reserves Rollforward | Casualty Program Insurance Reserves Rollforward
|  | Years Ended October 31,
(in millions) |  | 2019 |  | 2018 |  | 2017
Net balance at beginning of year |  | $ | 427.7 |  |  | $ | 412.5 |  |  | $ | 348.2 |
Change in case reserves plus IBNR Claims — current year |  | 137.9 |  |  | 131.4 |  |  | 112.2 |
Change in case reserves plus IBNR Claims — prior years |  | (3.4 | ) |  | 10.2 |  |  | 23.1 |
Claims paid |  | (119.1 | ) |  | (126.5 | ) |  | (105.2 | )
GCA acquisition |  | — |  |  | 0.1 |  |  | 34.1 |
Net balance, October 31(1) |  | 443.3 |  |  | 427.7 |  |  | 412.5 |
Recoverables |  | 64.5 |  |  | 73.7 |  |  | 73.1 |
Gross balance, October 31 |  | $ | 507.8 |  |  | $ | 501.4 |  |  | $ | 485.6 |
(1) Includes reserves related to discontinued operations of approximately $1 million for 2019, $3 million for 2018, and $10 million for 2017.
Schedule of Instruments Used to Collateralize Insurance Obligations | Instruments Used to Collateralize Our Insurance Obligations
| As of October 31,
(in millions) | 2019 |  | 2018
Standby letters of credit | $ | 141.0 |  |  | $ | 144.1 |
Surety bonds | 90.8 |  |  | 89.2 |
Restricted insurance deposits | 0.8 |  |  | 0.6 |
Total | $ | 232.6 |  |  | $ | 233.9 |

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- Definition A tabular summary of letters of credit, surety bonds and restricted insurance deposits outstanding to collateralize self-insurance obligations. + References No definition available. + Details
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- Definition Schedule Of Insurance Related Balances And Activity [Table Text Block] + References No definition available. + Details
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- Definition Tabular disclosure of the activity in the reserve for settling insured claims and expenses incurred in the claims settlement process for the period. The estimated liability includes the amount of money that will be required for future payments of (a) claims that have been reported to the insurer, (b) claims related to insured events that have occurred but that have not been reported to the insurer as of the date the liability is estimated, and (c) claim adjustment expenses. Claim adjustment expenses include costs incurred in the claim settlement process such as legal fees; outside adjuster fees; and costs to record, process, and adjust claims. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=116884095&loc=d3e14764-158437 + Details
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