XML 37 R53.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Commitments and Contingencies (Details) | 0 Months Ended |  | 0 Months Ended |  | 1 Months Ended |  | 1 Months Ended | 0 Months Ended | 6 Months Ended | 12 Months Ended | 6 Months Ended | 0 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 17, 2014 AUD | Mar. 31, 2015 Standby Letters of Credit USD ($) | Oct. 17, 2014 USAID Egyptian Projects URS Corporation Washington Group International USD ($) item project | Mar. 31, 2015 DOE Deactivation Demolition And Removal Project Member URS Corporation Washington Group International USD ($) | Mar. 31, 2015 DOE Deactivation Demolition And Removal Project Member Department of Energy Member USD ($) | Dec. 31, 2014 DOE Deactivation Demolition And Removal Project Member Department of Energy Member URS Corporation Washington Group International USD ($) | Mar. 31, 2015 DOE Deactivation Demolition And Removal Project Member Department of Energy Member URS Corporation Washington Group International USD ($) | Jan. 31, 2010 Canadian Pipeline Contract Member URS Corporation Flint Energy Services Ltd Member CAD | Dec. 06, 2014 Waste Isolation Pilot Plant Environmental Incidents Member URS Corporation Nuclear Waste Partnership LLC Member USD ($) | Mar. 31, 2015 AECOM Australia item | Sep. 30, 2006 AECOM Australia AUD | Mar. 31, 2014 RCM applicants AUD | Jun. 17, 2014 Portigon AG AUD
Commitments and Contingencies |  |  |  |  |  |  |  |  |  |  |  |  |
Contingency liability of general and professional liability insurance programs and for payment and performance guarantees |  | $ 439,000,000 us-gaap_LossContingencyEstimateOfPossibleLoss / us-gaap_LossContingenciesByNatureOfContingencyAxis = us-gaap_StandbyLettersOfCreditMember |  |  |  |  |  |  |  |  |  |  |
Number of subcontractors |  |  | 2 us-gaap_LossContingencyNumberOfDefendants / us-gaap_BusinessAcquisitionAxis = acm_UrsCorporationMember / us-gaap_LossContingenciesByNatureOfContingencyAxis = acm_UsaidEgyptianProjectsMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = acm_WashingtonGroupInternationalMember |  |  |  |  |  |  |  |  |  |
Number of projects failed to comply USAID regulations |  |  | 5 acm_NumberOfProjectsFailedToComplyRegulations / us-gaap_BusinessAcquisitionAxis = acm_UrsCorporationMember / us-gaap_LossContingenciesByNatureOfContingencyAxis = acm_UsaidEgyptianProjectsMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = acm_WashingtonGroupInternationalMember |  |  |  |  |  |  |  |  |  |
Amount paid to federal government for the five completed and operational projects ( including damages and civil penalties) |  |  | 373,000,000 acm_LossContingencyPaymentsIncludingDamagesAndCivilPenalties / us-gaap_BusinessAcquisitionAxis = acm_UrsCorporationMember / us-gaap_LossContingenciesByNatureOfContingencyAxis = acm_UsaidEgyptianProjectsMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = acm_WashingtonGroupInternationalMember |  |  |  |  |  |  |  |  |  |
Projects costs, minimum |  |  |  | 146,000,000 us-gaap_LossContingencyRangeOfPossibleLossMinimum / us-gaap_BusinessAcquisitionAxis = acm_UrsCorporationMember / us-gaap_LossContingenciesByNatureOfContingencyAxis = acm_DoeDeactivationDemolitionAndRemovalProjectMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = acm_WashingtonGroupInternationalMember | 106,000,000 us-gaap_LossContingencyRangeOfPossibleLossMinimum / dei_LegalEntityAxis = acm_DepartmentOfEnergyMember / us-gaap_LossContingenciesByNatureOfContingencyAxis = acm_DoeDeactivationDemolitionAndRemovalProjectMember |  | 106,000,000 us-gaap_LossContingencyRangeOfPossibleLossMinimum / us-gaap_BusinessAcquisitionAxis = acm_UrsCorporationMember / dei_LegalEntityAxis = acm_DepartmentOfEnergyMember / us-gaap_LossContingenciesByNatureOfContingencyAxis = acm_DoeDeactivationDemolitionAndRemovalProjectMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = acm_WashingtonGroupInternationalMember |  |  |  |  |  |
Projects costs, maximum |  |  |  |  |  |  | 146,000,000 us-gaap_LossContingencyRangeOfPossibleLossMaximum / us-gaap_BusinessAcquisitionAxis = acm_UrsCorporationMember / dei_LegalEntityAxis = acm_DepartmentOfEnergyMember / us-gaap_LossContingenciesByNatureOfContingencyAxis = acm_DoeDeactivationDemolitionAndRemovalProjectMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = acm_WashingtonGroupInternationalMember |  |  |  |  |  |
Total project costs |  |  |  | 300,000,000 us-gaap_LossContingencyRangeOfPossibleLossPortionNotAccrued / us-gaap_BusinessAcquisitionAxis = acm_UrsCorporationMember / us-gaap_LossContingenciesByNatureOfContingencyAxis = acm_DoeDeactivationDemolitionAndRemovalProjectMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = acm_WashingtonGroupInternationalMember |  |  |  |  |  |  |  |  |
Amount recovery ( including additional Fees) |  |  |  |  |  | 103,000,000 acm_LossContingencyAmountEstimatedRecoveryFromThirdParty / us-gaap_BusinessAcquisitionAxis = acm_UrsCorporationMember / dei_LegalEntityAxis = acm_DepartmentOfEnergyMember / us-gaap_LossContingenciesByNatureOfContingencyAxis = acm_DoeDeactivationDemolitionAndRemovalProjectMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = acm_WashingtonGroupInternationalMember |  |  |  |  |  |  |
Minimum cost to complete the project |  |  |  |  |  | 100,000,000 acm_MinimumEstimatedCostToCompleteProjectAndPromisedAmenities / us-gaap_BusinessAcquisitionAxis = acm_UrsCorporationMember / dei_LegalEntityAxis = acm_DepartmentOfEnergyMember / us-gaap_LossContingenciesByNatureOfContingencyAxis = acm_DoeDeactivationDemolitionAndRemovalProjectMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = acm_WashingtonGroupInternationalMember |  |  |  |  |  |  |
Civil penalty Amount |  |  |  |  |  |  |  |  | 17,700,000 us-gaap_LossContingencyDamagesPaidValue / us-gaap_BusinessAcquisitionAxis = acm_UrsCorporationMember / us-gaap_LossContingenciesByNatureOfContingencyAxis = acm_WasteIsolationPilotPlantEnvironmentalIncidentsMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = acm_NuclearWastePartnershipLlcMember |  |  |  |
Proceeds from initial public offering (IPO) |  |  |  |  |  |  |  |  |  |  | 700,000,000 us-gaap_ProceedsFromIssuanceInitialPublicOffering / us-gaap_LossContingenciesByNatureOfContingencyAxis = acm_AECOMAustraliaMember |  |
Bank loan |  |  |  |  |  |  |  |  |  |  | 1,400,000,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LossContingenciesByNatureOfContingencyAxis = acm_AECOMAustraliaMember |  |
Number of initial public offering investors |  |  |  |  |  |  |  |  |  | 770 acm_NumberOfInitialPublicOfferingInvestors / us-gaap_LossContingenciesByNatureOfContingencyAxis = acm_AECOMAustraliaMember |  |  |
Damages claimed by applicants |  |  |  |  |  |  |  | 85,000,000 us-gaap_LossContingencyDamagesSoughtValue / us-gaap_BusinessAcquisitionAxis = acm_UrsCorporationMember / us-gaap_LossContingenciesByNatureOfContingencyAxis = acm_CanadianPipelineContractMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = acm_FlintEnergyServicesLtdMember |  |  |  | 1,680,000,000 us-gaap_LossContingencyDamagesSoughtValue / us-gaap_LossContingenciesByNatureOfContingencyAxis = acm_SpvAndAffiliatedSpvsMember | 76,000,000 us-gaap_LossContingencyDamagesSoughtValue / us-gaap_LossContingenciesByNatureOfContingencyAxis = acm_PortigonAgMember
Securities acquired by investors | 155,000,000 acm_SecuritiesAcquiredByInvestors |  |  |  |  |  |  |  |  |  |  |  |

X
- Definition This element represents loss contingency amount estimated recovery from third party + References No definition available. + Details
Name: | acm_LossContingencyAmountEstimatedRecoveryFromThirdParty
Namespace Prefix: | acm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition This element represents the amount paid to the federal government for completed and fully operational projects as well as damages and civil penalties (including doubling and trebling of damages) for violation of the statutes. + References No definition available. + Details
Name: | acm_LossContingencyPaymentsIncludingDamagesAndCivilPenalties
Namespace Prefix: | acm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the minimum information about estimated cost to complete the project and promised amenities + References No definition available. + Details
Name: | acm_MinimumEstimatedCostToCompleteProjectAndPromisedAmenities
Namespace Prefix: | acm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the information pertaining to number of initial public offering investors. + References No definition available. + Details
Name: | acm_NumberOfInitialPublicOfferingInvestors
Namespace Prefix: | acm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition This element represents the number of the projects failure to comply with U.S. Agency for International Development (USAID) source, origin, and nationality regulations. + References No definition available. + Details
Name: | acm_NumberOfProjectsFailedToComplyRegulations
Namespace Prefix: | acm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the amount of securities acquired by investors + References No definition available. + Details
Name: | acm_SecuritiesAcquiredByInvestors
Namespace Prefix: | acm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 + Details
Name: | us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_LossContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of damages paid to the plaintiff in the legal matter. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349 + Details
Name: | us-gaap_LossContingencyDamagesPaidValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The value (monetary amount) of the award the plaintiff seeks in the legal matter. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349 + Details
Name: | us-gaap_LossContingencyDamagesSoughtValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Reflects the estimated amount of loss from the specified contingency as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349 + Details
Name: | us-gaap_LossContingencyEstimateOfPossibleLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Number of defendants named in a legal action. + References No definition available. + Details
Name: | us-gaap_LossContingencyNumberOfDefendants
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The estimated maximum amount of possible loss from the contingency. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349 + Details
Name: | us-gaap_LossContingencyRangeOfPossibleLossMaximum
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The estimated minimum amount of possible loss from the contingency. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349 + Details
Name: | us-gaap_LossContingencyRangeOfPossibleLossMinimum
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The difference between the maximum amount of estimated loss and the amount recorded as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 05 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6395354&loc=d3e12631-108344 + Details
Name: | us-gaap_LossContingencyRangeOfPossibleLossPortionNotAccrued
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The cash inflow associated with the amount received from entity's first offering of stock to the public. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromIssuanceInitialPublicOffering
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration