XML 16 R46.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Derivative Financial Instruments (Details) In Millions, unless otherwise specified | 3 Months Ended |  |  |  |  | 3 Months Ended |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2013 Cash flow hedges Interest rate swap agreements USD ($) | Dec. 31, 2013 Derivatives designated as hedging instruments Cash flow hedges Interest rate swap agreements USD ($) | Dec. 31, 2013 Derivatives designated as hedging instruments Cash flow hedges Interest rate swap agreements expiring in September 2015 USD ($) | Sep. 30, 2013 Derivatives designated as hedging instruments Cash flow hedges Interest rate swap agreements expiring in September 2015 USD ($) | Dec. 31, 2013 Derivatives designated as hedging instruments Cash flow hedges Interest rate swap agreements expiring in December 2014 USD ($) | Sep. 30, 2013 Derivatives designated as hedging instruments Cash flow hedges Interest rate swap agreements expiring in December 2014 USD ($) | Sep. 30, 2013 Derivatives designated as hedging instruments Cash flow hedges Interest rate swap agreements expiring in December 2013 USD ($) | Dec. 31, 2013 Derivatives designated as hedging instruments Cash flow hedges Foreign currency options USD ($) | Dec. 31, 2013 Derivatives designated as hedging instruments Cash flow hedges Foreign currency options BRL | Sep. 30, 2013 Derivatives designated as hedging instruments Cash flow hedges Foreign currency options USD ($) | Sep. 30, 2013 Derivatives designated as hedging instruments Cash flow hedges Foreign currency options BRL | Dec. 31, 2013 Derivatives not designated as hedging instruments Foreign currency forward contracts USD for foreign currencies Purchase USD ($) | Sep. 30, 2013 Derivatives not designated as hedging instruments Foreign currency forward contracts USD for foreign currencies Purchase USD ($) | Dec. 31, 2013 Derivatives not designated as hedging instruments Foreign currency forward contracts USD for foreign currencies Sell USD ($) | Sep. 30, 2013 Derivatives not designated as hedging instruments Foreign currency forward contracts USD for foreign currencies Sell USD ($) | Dec. 31, 2013 Derivatives not designated as hedging instruments Foreign currency forward contracts GBP for BRL Purchase USD ($) | Dec. 31, 2013 Derivatives not designated as hedging instruments Foreign currency forward contracts GBP for BRL Purchase BRL | Sep. 30, 2013 Derivatives not designated as hedging instruments Foreign currency forward contracts GBP for BRL Purchase USD ($) | Sep. 30, 2013 Derivatives not designated as hedging instruments Foreign currency forward contracts GBP for BRL Purchase BRL | Dec. 31, 2013 Derivatives not designated as hedging instruments Foreign currency forward contracts GBP for BRL Sell USD ($) | Dec. 31, 2013 Derivatives not designated as hedging instruments Foreign currency forward contracts GBP for BRL Sell BRL | Sep. 30, 2013 Derivatives not designated as hedging instruments Foreign currency forward contracts GBP for BRL Sell USD ($) | Sep. 30, 2013 Derivatives not designated as hedging instruments Foreign currency forward contracts GBP for BRL Sell BRL
Derivative financial instruments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective portion of derivatives before tax effect | $ 3.2 | $ (0.3) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective portion of derivatives expected to be reclassified from accumulated other comprehensive loss to interest expense, net | 2.4 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional Amount |  |  | 250.0 | 250.0 | 200.0 | 200.0 | 150.0 |  |  |  |  | 230.2 | 171.8 | 172.0 | 174.2 | 1.1 | 2.5 | 1.8 | 4.0 | 2.0 | 4.7 | 3.6 | 8.2
Fixed Rate (as a percent) |  |  | 0.95% | 0.95% | 0.68% | 0.68% | 0.55% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional principal of derivative exchange contracts |  |  |  |  |  |  |  | $ 0.4 | 1.0 | $ 0.9 | 2.1 |  |  |  |  |  |  |  |  |  |  |  |
Maximum maturity term |  |  |  |  |  |  |  | 24 months | 24 months |  |  |  |  |  |  |  |  |  |  |  |  |  |

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 High end period remaining until maturity for the derivative contract, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_DerivativeHigherRemainingMaturityRange1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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=7476318&loc=SL5624171-113959 + Details
Name: | us-gaap_DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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