XML 52 R42.htm IDEA: XBRL DOCUMENT
v3.24.2.u1

Discontinued Operations, Goodwill, and Intangible Assets - Statement of cash flows (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Held for sale |  |  |  |
Discontinued Operations, Goodwill and Intangible Assets |  |  |  |
Payments for capital expenditures | $ (0.3) | $ (0.6) | $ (2.4) | $ (5.1)

X
- Definition Amount of capital expenditure attributable to discontinued operations, including adjustments. + References No definition available. + Details
Name: | acm_CapitalExpenditureDiscontinuedOperationsIncludingAdjustments
Namespace Prefix: | acm_
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_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DisposalGroupClassificationAxis=us-gaap_DiscontinuedOperationsHeldforsaleMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |