XML 60 R41.htm IDEA: XBRL DOCUMENT
v3.25.0.1

INSURANCE - Schedule of Insurance Related Balances and Activity (Details) - USD ($) $ in Millions | Jan. 31, 2025 | Oct. 31, 2024
--- | --- | ---
Liability for Claims and Claims Adjustment Expense [Line Items] |  |
Insurance recoverables | $ 91.0 | $ 91.0
Insurance claim reserves, excluding medical and dental |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |
Insurance claim reserves | 616.3 | 608.4
Medical and dental claim reserves |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |
Insurance claim reserves | $ 12.8 | $ 11.0

X
- Definition Carrying amount as of the balance sheet date of amounts expected to be recovered under the terms of insurance contracts. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(17)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_EstimatedInsuranceRecoveries
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpenseLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Carrying amount (including both current and noncurrent portions) of accrued known and estimated losses incurred as of the balance sheet date for which no insurance coverage exists, and for which a claim has been made or is probable of being asserted, typically arising from workmen's compensation-type of incidents and personal injury to nonemployees from accidents on the entity's property. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(24)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_SelfInsuranceReserve
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | abm_InsurancePoliciesAxis=abm_AllOtherClaimTypesExcludingMedicalAndDentalSelfInsuranceProgramMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | abm_InsurancePoliciesAxis=abm_MedicalAndDentalSelfInsuranceProgramMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |