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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Details 3) (Net Investment Hedging [Member], USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
Apr. 30, 2015
Apr. 30, 2014
Apr. 30, 2015
Apr. 30, 2014
Net Investment Hedging [Member]
        
Nonderivatives designated as hedging relationships        
Nonderivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion $ 459pll_NonderivativeInstrumentsGainLossRecognizedinOtherComprehensiveIncomeLossEffectivePortion
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_NetInvestmentHedgingMember		 $ 63pll_NonderivativeInstrumentsGainLossRecognizedinOtherComprehensiveIncomeLossEffectivePortion
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_NetInvestmentHedgingMember		 $ 11,943pll_NonderivativeInstrumentsGainLossRecognizedinOtherComprehensiveIncomeLossEffectivePortion
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_NetInvestmentHedgingMember		 $ (4,113)pll_NonderivativeInstrumentsGainLossRecognizedinOtherComprehensiveIncomeLossEffectivePortion
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_NetInvestmentHedgingMember
Nonderivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion $ 0pll_NonderivativeInstrumentsGainLossReclassifiedfromAccumulatedOCIintoIncomeEffectivePortion
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_NetInvestmentHedgingMember		 [1] $ 0pll_NonderivativeInstrumentsGainLossReclassifiedfromAccumulatedOCIintoIncomeEffectivePortion
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_NetInvestmentHedgingMember		 [1] $ 0pll_NonderivativeInstrumentsGainLossReclassifiedfromAccumulatedOCIintoIncomeEffectivePortion
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_NetInvestmentHedgingMember		 [1] $ 0pll_NonderivativeInstrumentsGainLossReclassifiedfromAccumulatedOCIintoIncomeEffectivePortion
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_NetInvestmentHedgingMember		 [1]
[1] There were no gains or losses recognized in earnings related to the ineffective portion of the hedging relationship or related to the amount excluded from the assessment of hedge effectiveness for the three and nine months ended April 30, 2015 and April 30, 2014.