XML 29 R44.htm IDEA: XBRL DOCUMENT
v3.2.0.727

Derivative Financial Instruments (Details) BRL in Millions, AUD in Millions, $ in Millions | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2015 USD ($) | Jun. 30, 2014 USD ($) | Jun. 30, 2015 USD ($) | Jun. 30, 2014 USD ($) | Jun. 30, 2015 BRL item | Jun. 30, 2015 AUD item | Jun. 30, 2015 USD ($) item | Sep. 30, 2014 BRL item | Sep. 30, 2014 USD ($) item
Derivative financial instruments |  |  |  |  |  |  |  |  |
Effective portion of derivatives expected to be reclassified from accumulated other comprehensive loss to cost of revenue, net |  |  | $ 0.8 |  |  |  |  |  |
Cash Flow Hedging | Interest rate swap agreements |  |  |  |  |  |  |  |  |
Derivative financial instruments |  |  |  |  |  |  |  |  |
Effective portion of derivatives before tax effect |  |  | 7.5 |  |  |  |  |  |
Effective portion of derivatives expected to be reclassified from accumulated other comprehensive loss to cost of revenue, net |  |  | 6.5 |  |  |  |  |  |
Designated as Hedging Instrument | Cash Flow Hedging | Interest rate swap agreements |  |  |  |  |  |  |  |  |
Derivative financial instruments |  |  |  |  |  |  |  |  |
Effective portion of derivatives before tax effect | $ 1.7 | $ (2.9) | (8.2) | $ (3.2) |  |  |  |  |
Designated as Hedging Instrument | Cash Flow Hedging | Interest Rate Swap September 2018 |  |  |  |  |  |  |  |  |
Derivative financial instruments |  |  |  |  |  |  |  |  |
Notional Amount |  |  |  |  |  |  | $ 300.0 |  |
Fixed Rate (as a percent) |  |  |  |  | 1.54% | 1.54% | 1.54% |  |
Designated as Hedging Instrument | Cash Flow Hedging | Interest Rate Swap June 2018 |  |  |  |  |  |  |  |  |
Derivative financial instruments |  |  |  |  |  |  |  |  |
Notional Amount |  |  |  |  |  |  | $ 300.0 |  | $ 300.0
Fixed Rate (as a percent) |  |  |  |  | 1.63% | 1.63% | 1.63% | 1.63% | 1.63%
Designated as Hedging Instrument | Cash Flow Hedging | Interest Rate Swap September 2015 |  |  |  |  |  |  |  |  |
Derivative financial instruments |  |  |  |  |  |  |  |  |
Notional Amount |  |  |  |  |  |  | $ 250.0 |  | $ 250.0
Fixed Rate (as a percent) |  |  |  |  | 0.95% | 0.95% | 0.95% | 0.95% | 0.95%
Designated as Hedging Instrument | Cash Flow Hedging | Interest Rate Swap December 2014 |  |  |  |  |  |  |  |  |
Derivative financial instruments |  |  |  |  |  |  |  |  |
Notional Amount |  |  |  |  |  |  |  |  | $ 200.0
Fixed Rate (as a percent) |  |  |  |  |  |  |  | 0.68% | 0.68%
Designated as Hedging Instrument | Cash Flow Hedging | Foreign Exchange Option |  |  |  |  |  |  |  |  |
Derivative financial instruments |  |  |  |  |  |  |  |  |
Effective portion of derivatives before tax effect |  |  | 1.5 |  |  |  |  |  |
Designated as Hedging Instrument | Cash Flow Hedging | Foreign currency forward contracts |  |  |  |  |  |  |  |  |
Derivative financial instruments |  |  |  |  |  |  |  |  |
Effective portion of derivatives before tax effect | $ (1.0) |  | $ (2.4) |  |  |  |  |  |
Notional principal of derivative exchange contracts |  |  |  |  |  | AUD 102.6 | $ 77.9 |  |
Not Designated as Hedging Instrument | Foreign currency forward contracts | United States of America, Dollars | Purchase |  |  |  |  |  |  |  |  |
Derivative financial instruments |  |  |  |  |  |  |  |  |
Notional Amount |  |  |  |  |  |  | 95.6 |  | $ 69.5
Not Designated as Hedging Instrument | Foreign currency forward contracts | United States of America, Dollars | Sell |  |  |  |  |  |  |  |  |
Derivative financial instruments |  |  |  |  |  |  |  |  |
Notional Amount |  |  |  |  |  |  | $ 69.0 |  | 71.5
Not Designated as Hedging Instrument | Foreign currency forward contracts | Brazil, Brazil Real | Purchase |  |  |  |  |  |  |  |  |
Derivative financial instruments |  |  |  |  |  |  |  |  |
Notional Amount |  |  |  |  |  |  |  | BRL 1.1 | $ 0.4
Options outstanding | item |  |  |  |  | 0 | 0 | 0 |  |
Not Designated as Hedging Instrument | Foreign currency forward contracts | Brazil, Brazil Real | Sell |  |  |  |  |  |  |  |  |
Derivative financial instruments |  |  |  |  |  |  |  |  |
Notional Amount |  |  |  |  | BRL 4.0 |  | $ 1.3 |  |
Options outstanding | item |  |  |  |  |  |  |  | 0 | 0
Not Designated as Hedging Instrument | Options Held |  |  |  |  |  |  |  |  |
Derivative financial instruments |  |  |  |  |  |  |  |  |
Notional principal of derivative exchange contracts |  |  |  |  |  |  | $ 0.0 |  |

X
- Definition Aggregate notional amount of foreign currency derivatives to exchange foreign currencies. Notional amount refers to the number of currency units specified in the foreign currency derivative contract. + References No definition available. + Details
Name: | acm_NotionalAmountOfForeignCurrencyDerivativeExchangeContracts
Namespace Prefix: | acm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
Name: | invest_DerivativeNotionalAmount
Namespace Prefix: | invest_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition Fixed interest rate related to the interest rate derivative. + References No definition available. + Details
Name: | us-gaap_DerivativeFixedInterestRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The estimated value of gains (losses), net anticipated to be transferred in the future from accumulated other comprehensive income into earnings. + References No definition available. + Details
Name: | us-gaap_DerivativeInstrumentsGainLossReclassificationFromAccumulatedOCIToIncomeEstimatedNetAmountToBeTransferred
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624171-113959 + Details
Name: | us-gaap_DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet
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_DerivativeLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of derivative instruments of a particular group held by the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5579245-113959 + Details
Name: | us-gaap_DerivativeNumberOfInstrumentsHeld
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=us-gaap_CashFlowHedgingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwapMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_DesignatedAsHedgingInstrumentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=acm_InterestRateSwapSeptember2018Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=acm_InterestRateSwapJune2018Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=acm_InterestRateSwapSeptember2015Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=acm_InterestRateSwapDecember2014Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForeignExchangeOptionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForeignExchangeForwardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_NondesignatedMember
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_PositionAxis=us-gaap_LongMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PositionAxis=us-gaap_ShortMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_OptionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |