XML 62 R43.htm IDEA: XBRL DOCUMENT
v3.19.1

Credit Facility - Narrative (Details) | Sep. 01, 2017 USD ($) | Jul. 31, 2021 | Apr. 30, 2019 | Sep. 01, 2018 USD ($) | Aug. 31, 2017 USD ($)
--- | --- | --- | --- | --- | ---
Prior Credit Facility | Revolving Credit Facility | Line of Credit |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Line of credit facility, borrowing capacity |  |  |  |  | $ 800,000,000.0
Credit Facility |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Line of credit facility, term | 5 years |  |  |  |
Weighted average interest rate |  |  | 4.64% |  |
Deferred financing costs | $ 18,700,000 |  |  |  |
Credit Facility | Line of Credit |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Deferred financing costs | 5,200,000 |  |  |  |
Credit Facility | Term Loan |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Debt instrument, face amount | 800,000,000.0 |  |  |  |
Deferred financing costs | 13,400,000 |  |  |  |
Credit Facility | Revolving Credit Facility | Line of Credit |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Line of credit facility, borrowing capacity | 900,000,000.0 |  |  |  |
Borrowing capacity after initial year of term |  |  |  | $ 800,000,000.0 |
Credit Facility | Standby Letters of Credit |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Line of credit facility, borrowing capacity | 300,000,000.0 |  |  |  |
Credit Facility | Swing Line Loan |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Line of credit facility, borrowing capacity | $ 75,000,000.0 |  |  |  |
Credit Facility | Minimum |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Fixed charge coverage ratio |  |  | 1.50 |  |
Credit Facility | Minimum | Revolving Credit Facility |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Commitment fee percentage on unused portion of the Facility | 0.20% |  |  |  |
Credit Facility | Maximum |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Leverage ratio |  |  | 4.50 |  |
Leverage ratio election option for four fiscal quarters in event of material acquisition |  |  | 3.75 |  |
Credit Facility | Maximum | Forecast |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Leverage ratio |  | 3.50 |  |  |
Credit Facility | Maximum | Revolving Credit Facility |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Commitment fee percentage on unused portion of the Facility | 0.35% |  |  |  |
Credit Facility | Eurodollar | Minimum |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Basis spread on variable rate | 1.00% |  |  |  |
Credit Facility | Eurodollar | Maximum |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Basis spread on variable rate | 2.25% |  |  |  |
Credit Facility | Base Rate | Minimum |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Basis spread on variable rate | 0.00% |  |  |  |
Credit Facility | Base Rate | Maximum |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Basis spread on variable rate | 1.25% |  |  |  |

X
- Definition Debt Instrument Covenant Fixed Charge Coverage Ratio + References No definition available. + Details
Name: | abm_DebtInstrumentCovenantFixedChargeCoverageRatio
Namespace Prefix: | abm_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition Debt Instrument Covenant Total Leverage Ratio + References No definition available. + Details
Name: | abm_DebtInstrumentCovenantTotalLeverageRatio
Namespace Prefix: | abm_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition Debt Instrument, Covenant Total Leverage Ratio, Optional Ratio For Four Fiscal Quarters In Event Of Material Acquisition + References No definition available. + Details
Name: | abm_DebtInstrumentCovenantTotalLeverageRatioOptionalRatioForFourFiscalQuartersInEventOfMaterialAcquisition
Namespace Prefix: | abm_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line Of Credit Facility, Maximum Borrowing Capacity After Initial Year Of Term + References No definition available. + Details
Name: | abm_LineOfCreditFacilityMaximumBorrowingCapacityAfterInitialYearOfTerm
Namespace Prefix: | abm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentTerm
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average interest rate of debt outstanding. + References No definition available. + Details
Name: | us-gaap_DebtWeightedAverageInterestRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28555-108399 + Details
Name: | us-gaap_DeferredFinanceCostsGross
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_LineOfCreditFacilityLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility. + References No definition available. + Details
Name: | us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DebtInstrumentAxis=abm_PriorCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=abm_CreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_LoansPayableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=us-gaap_StandbyLettersOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=abm_SwingLineLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementScenarioAxis=us-gaap_ScenarioForecastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=us-gaap_EurodollarMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=us-gaap_BaseRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |