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Derivatives Narrative (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Aug. 31, 2014
Derivative Instruments, Gain (Loss) [Line Items]  
Debt, Weighted Average Interest Rate 5.60%
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value $ 2.5
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value 2.2
Designated as Hedging Instrument [Member]
 
Derivative Instruments, Gain (Loss) [Line Items]  
Interest Rate Derivative Assets, at Fair Value 4.2
Interest Rate Contracts, Expiring At Various Times Through Fiscal 2018 [Member]
 
Derivative Instruments, Gain (Loss) [Line Items]  
Derivative, Notional Amount 5.0
Interest Rate Contracts, Expiring During Fiscal 2015
 
Derivative Instruments, Gain (Loss) [Line Items]  
Derivative, Notional Amount 0.4
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
 
Derivative Instruments, Gain (Loss) [Line Items]  
Gain on Discontinuation of Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring $ 13.5