XML 64 R52.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Debt - 2014 Credit Agreement (Details) $ in Millions, $ in Millions, $ in Millions |  |  |  |  |  |  | 3 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 01, 2019 | Jul. 01, 2018 | Mar. 13, 2018 USD ($) | Mar. 31, 2017 | Sep. 29, 2016 USD ($) | Oct. 17, 2014 USD ($) | Dec. 31, 2018 USD ($) | Sep. 30, 2018 USD ($) | Mar. 13, 2018 CAD ($) | Mar. 13, 2018 AUD ($) | Mar. 13, 2018 USD ($)
Term loan A |  |  |  |  |  |  |  |  |  |  |
Debt agreements |  |  |  |  |  |  |  |  |  |  |
Borrowing capacity |  |  |  |  | $ 185.0 |  |  |  |  |  |
2014 Credit Agreement | Minimum | Base Rate |  |  |  |  |  |  |  |  |  |  |
Debt agreements |  |  |  |  |  |  |  |  |  |  |
Interest rate, basis spread (as a percent) |  | 0.25% |  |  |  |  |  |  |  |  |
2014 Credit Agreement | Minimum | Euro currency rate |  |  |  |  |  |  |  |  |  |  |
Debt agreements |  |  |  |  |  |  |  |  |  |  |
Interest rate, basis spread (as a percent) |  | 1.25% |  |  |  |  |  |  |  |  |
2014 Credit Agreement | Maximum | Base Rate |  |  |  |  |  |  |  |  |  |  |
Debt agreements |  |  |  |  |  |  |  |  |  |  |
Interest rate, basis spread (as a percent) |  | 1.00% |  |  |  |  |  |  |  |  |
2014 Credit Agreement | Maximum | Euro currency rate |  |  |  |  |  |  |  |  |  |  |
Debt agreements |  |  |  |  |  |  |  |  |  |  |
Interest rate, basis spread (as a percent) |  | 2.00% |  |  |  |  |  |  |  |  |
2014 Credit Agreement | Term loan A |  |  |  |  |  |  |  |  |  |  |
Debt agreements |  |  |  |  |  |  |  |  |  |  |
Borrowing capacity |  |  |  |  |  |  |  |  | $ 500 | $ 250 | $ 510.0
2014 Credit Agreement | Term loan A | Base Rate | USD |  |  |  |  |  |  |  |  |  |  |
Debt agreements |  |  |  |  |  |  |  |  |  |  |
Interest rate, basis spread (as a percent) |  |  | 0.50% |  |  |  |  |  |  |  |
2014 Credit Agreement | Term loan A | Euro currency rate |  |  |  |  |  |  |  |  |  |  |
Debt agreements |  |  |  |  |  |  |  |  |  |  |
Interest rate, basis spread (as a percent) |  |  | 1.50% |  |  |  |  |  |  |  |
2014 Credit Agreement | Term loan B |  |  |  |  |  |  |  |  |  |  |
Debt agreements |  |  |  |  |  |  |  |  |  |  |
Borrowing capacity |  |  |  |  |  |  |  |  |  |  | $ 600.0
2014 Credit Agreement | Term loan B | Base Rate |  |  |  |  |  |  |  |  |  |  |
Debt agreements |  |  |  |  |  |  |  |  |  |  |
Interest rate, basis spread (as a percent) |  |  | 0.75% |  |  |  |  |  |  |  |
2014 Credit Agreement | Term loan B | Euro currency rate |  |  |  |  |  |  |  |  |  |  |
Debt agreements |  |  |  |  |  |  |  |  |  |  |
Interest rate, basis spread (as a percent) |  |  | 1.75% |  |  |  |  |  |  |  |
2014 Credit Agreement | Revolving credit facility |  |  |  |  |  |  |  |  |  |  |
Debt agreements |  |  |  |  |  |  |  |  |  |  |
Increase in borrowing capacity |  |  | $ 1,350.0 |  |  | $ 1,050.0 |  |  |  |  |
Outstanding letters of credit |  |  |  |  |  |  | $ 27.2 | $ 28.7 |  |  |
Remaining borrowing capacity under credit facility |  |  |  |  |  |  | $ 1,014.8 | $ 1,321.3 |  |  |
2014 Credit Agreement | Revolving credit facility | Base Rate |  |  |  |  |  |  |  |  |  |  |
Debt agreements |  |  |  |  |  |  |  |  |  |  |
Interest rate, basis spread (as a percent) |  |  | 0.75% |  |  |  |  |  |  |  |
2014 Credit Agreement | Revolving credit facility | Euro currency rate |  |  |  |  |  |  |  |  |  |  |
Debt agreements |  |  |  |  |  |  |  |  |  |  |
Interest rate, basis spread (as a percent) |  |  | 1.75% |  |  |  |  |  |  |  |
2014 Credit Agreement | Line of credit |  |  |  |  |  |  |  |  |  |  |
Debt agreements |  |  |  |  |  |  |  |  |  |  |
Borrowing capacity |  |  |  |  | $ 500.0 |  |  |  |  |  |
Consolidated leverage ratio | 4.0 |  | 4.5 | 4.75 | 5.00 |  | 4.2 |  |  |  |
Consolidated interest coverage ratio |  |  |  |  |  |  | 4.5 |  |  |  |

X
- Definition Represents the consolidated interest coverage ratio. + References No definition available. + Details
Name: | acm_ConsolidatedInterestCoverageRatio
Namespace Prefix: | acm_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition Last day of any period, the ratio of Consolidated total debt on such day to the consolidated EBITDA for such period. + References No definition available. + Details
Name: | acm_ConsolidatedLeverageRatio
Namespace Prefix: | acm_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

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
- References No definition available. + Details
Name: | us-gaap_DebtInstrumentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
Name: | us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of increase (decrease) of the credit facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
Name: | us-gaap_LineOfCreditFacilityIncreaseDecreaseForPeriodNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(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 Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Details
Name: | us-gaap_DebtInstrumentAxis=acm_CreditAgreement2014Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
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: |

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

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CurrencyAxis=currency_USD
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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