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Insurance | 12 Months Ended
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Oct. 31, 2019
Insurance [Abstract] |
Insurance | INSURANCE
We use a combination of insured and self-insurance programs to cover workers’ compensation, general liability, automobile liability, property damage, and other insurable risks. For the majority of these insurance programs, we retain the initial $1.0 million of exposure on a per-occurrence basis, either through deductibles or self-insured retentions. Beyond the retained exposures, we have varying primary policy limits ranging between $1.0 million and $5.0 million per occurrence. To cover general liability and automobile liability losses above these primary limits, we maintain commercial umbrella insurance policies that provide aggregate limits of $200.0 million. Our insurance policies generally cover workers’ compensation losses to the full extent of statutory requirements. Additionally, to cover property damage risks above our retained limits, we maintain policies that provide per occurrence limits of $75.0 million. We are also self-insured for certain employee medical and dental plans. We maintain stop-loss insurance for our self-insured medical plan under which we retain up to $0.5 million of exposure on a per-participant, per-year basis with respect to claims. The adequacy of our reserves for workers’ compensation, general liability, automobile liability, and property damage insurance claims is based upon known trends and events and the actuarial estimates of required reserves considering the most recently completed actuarial reports. We use all available information to develop our best estimate of insurance claims reserves as information is obtained. The results of actuarial reviews are used to estimate our insurance rates and insurance reserves for future periods and to adjust reserves, if appropriate, for prior years. Insurance Reserve Adjustments Actuarial Reviews and Updates Performed During 2019 We review our self-insurance liabilities on a regular basis and adjust our accruals accordingly. Actual claims activity or development may vary from our assumptions and estimates, which may result in material losses or gains. As we obtain additional information that affects the assumptions and estimates used in our reserve liability calculations, we adjust our self-insurance rates and reserves for future periods and, if appropriate, adjust our reserves for claims incurred in prior accounting periods. During the first and third quarters of 2019, we performed comprehensive actuarial reviews of the majority of our casualty insurance programs, which evaluated all changes made to claims reserves and claims payment activity for the periods of May 1, 2018 through October 31, 2018 and November 1, 2018 through April 30, 2019, respectively (the “Actuarial Reviews”). The Actuarial Reviews were comprehensive in nature and were based on loss development patterns, trend assumptions, and underlying expected loss costs during the periods analyzed. During the second and fourth quarters of 2019, we performed interim actuarial updates of the majority of our casualty insurance programs that considered changes in claims development and claims payment activity for the respective periods analyzed (the “Interim Updates”). These Interim Updates were abbreviated in nature based on actual versus expected development during the periods analyzed and relied on the key assumptions in the Actuarial Reviews (most notably loss development patterns, trend assumptions, and underlying expected loss costs). Based on the results of the Actuarial Reviews and Interim Updates, we decreased our total reserves for known claims as well as our estimate of the loss amounts associated with IBNR Claims for prior periods by $3.4 million during 2019. In 2018, we increased our total reserves related to prior year claims by $10.2 million. 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 |
At October 31, 2019 and 2018, insurance recoverables are included in both “Other current assets” and “Other noncurrent assets” on the accompanying consolidated balance sheets. 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. 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 The entire disclosure for the types of coverages and products sold, and the assets, obligations, recorded liabilities, revenues and expenses arising therefrom, and the amounts of and methodologies and assumptions used in determining the amounts of such items. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -URI http://asc.fasb.org/topic&trid=2303980 + Details
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