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Derivatives Narrative (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | ||
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Nov. 30, 2014
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Nov. 30, 2013
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Aug. 31, 2014
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| Derivative [Line Items] | |||
| Net foreign currency gain (loss) | $ (2.1)atu_GainLossOnForeignCurrencyFairValueHedgeDerivativesAndNotDesignatedAsHedgingInstrumentsAtFairValue | $ (8.7)atu_GainLossOnForeignCurrencyFairValueHedgeDerivativesAndNotDesignatedAsHedgingInstrumentsAtFairValue | |
| Fair Value Hedging [Member] | |||
| Derivative [Line Items] | |||
| Derivative, Notional Amount |
$ 192.7invest_DerivativeNotionalAmount / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_FairValueHedgingMember |
$ 219.9invest_DerivativeNotionalAmount / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_FairValueHedgingMember |
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- Definition
Gain (Loss) on Foreign Currency Fair Value Hedge Derivatives and Not Designated as Hedging Instruments at Fair Value No definition available.
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- Definition
Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Details
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