XML 55 R32.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Basis of Presentation and Significant Accounting Policies - Management Reimbursement Revenue (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Jan. 31, 2018 | Jan. 31, 2017
Segment Reporting Information [Line Items] |  |
Parking facility management fee revenue | $ 93.4 | $ 78.9
Business & Industry |  |
Segment Reporting Information [Line Items] |  |
Parking facility management fee revenue | 63.0 | 57.8
Aviation |  |
Segment Reporting Information [Line Items] |  |
Parking facility management fee revenue | 25.5 | 16.5
Healthcare |  |
Segment Reporting Information [Line Items] |  |
Parking facility management fee revenue | $ 4.9 | $ 4.6

X
- Definition Repayment received or receivable for expenses incurred on behalf of a client or customer, other than those reimbursements received by landlords from tenants. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 45 -Section 45 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=68075638&loc=d3e60722-111653 + Details
Name: | us-gaap_ReimbursementRevenue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=abm_BusinessandIndustryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=abm_AviationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=abm_HealthcareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |