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Income Taxes (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended 12 Months Ended
Dec. 27, 2014
Dec. 28, 2013
Dec. 27, 2014
Dec. 28, 2013
Jun. 28, 2014
Jun. 29, 2013
Jun. 30, 2012
Jun. 25, 2011
Income Taxes [Line Items]                
Effective tax rate on income from continuing operations 17.10%us-gaap_EffectiveIncomeTaxRateContinuingOperations 23.90%us-gaap_EffectiveIncomeTaxRateContinuingOperations 13.90%us-gaap_EffectiveIncomeTaxRateContinuingOperations 42.70%us-gaap_EffectiveIncomeTaxRateContinuingOperations        
Unrecognized Tax Benefits, Including Income Tax Penalties And Interest Accrued $ 301.6prgo_UnrecognizedTaxBenefitsIncludingIncomeTaxPenaltiesAndInterestAccrued   $ 301.6prgo_UnrecognizedTaxBenefitsIncludingIncomeTaxPenaltiesAndInterestAccrued   205.4prgo_UnrecognizedTaxBenefitsIncludingIncomeTaxPenaltiesAndInterestAccrued      
Unrecognized tax benefits liability, interest and penalties accrued 44.8us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued   44.8us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued   45.3us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued      
Income Tax Examination, Penalties and Interest Expense 8.0us-gaap_IncomeTaxExaminationPenaltiesAndInterestExpense              
Israeli Holding Company Subsidiary [Member]                
Income Taxes [Line Items]                
Foreign Statutory Corporate Tax Rate, Prior To Change, Prior Year         7.00%prgo_ForeignStatutoryCorporateTaxRatePriorToChangePriorYear
/ dei_LegalEntityAxis
= prgo_IsraeliHoldingCompanySubsidiaryMember
7.00%prgo_ForeignStatutoryCorporateTaxRatePriorToChangePriorYear
/ dei_LegalEntityAxis
= prgo_IsraeliHoldingCompanySubsidiaryMember
10.00%prgo_ForeignStatutoryCorporateTaxRatePriorToChangePriorYear
/ dei_LegalEntityAxis
= prgo_IsraeliHoldingCompanySubsidiaryMember
10.00%prgo_ForeignStatutoryCorporateTaxRatePriorToChangePriorYear
/ dei_LegalEntityAxis
= prgo_IsraeliHoldingCompanySubsidiaryMember
Foreign Statutory Corporate Tax Rate, Thereafter     6.00%prgo_ForeignStatutoryCorporateTaxRateThereafter
/ dei_LegalEntityAxis
= prgo_IsraeliHoldingCompanySubsidiaryMember
         
Foreign Statutory Corporate Tax Rate, Year One     9.00%prgo_ForeignStatutoryCorporateTaxRateYearOne
/ dei_LegalEntityAxis
= prgo_IsraeliHoldingCompanySubsidiaryMember
         
All Other Israel Entities [Member]                
Income Taxes [Line Items]                
Foreign Statutory Corporate Tax Rate, Current Year 25.00%prgo_ForeignStatutoryCorporateTaxRateCurrentYear
/ dei_LegalEntityAxis
= prgo_AllOtherIsraelEntitiesMember
             
Foreign Statutory Corporate Tax Rate, Year One 26.50%prgo_ForeignStatutoryCorporateTaxRateYearOne
/ dei_LegalEntityAxis
= prgo_AllOtherIsraelEntitiesMember
             
All Other Entities [Member]                
Income Taxes [Line Items]                
Income Tax Examination, Estimate of Possible Loss 69.2us-gaap_IncomeTaxExaminationEstimateOfPossibleLoss
/ dei_LegalEntityAxis
= prgo_AllOtherEntitiesMember
             
ISRAEL                
Income Taxes [Line Items]                
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount       (1.8)us-gaap_IncomeTaxReconciliationOtherAdjustments
/ us-gaap_IncomeTaxAuthorityAxis
= country_IL
       
UNITED KINGDOM                
Income Taxes [Line Items]                
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount       4.7us-gaap_IncomeTaxReconciliationOtherAdjustments
/ us-gaap_IncomeTaxAuthorityAxis
= country_GB
       
Foreign Statutory Corporate Tax Rate, Current Year 21.00%prgo_ForeignStatutoryCorporateTaxRateCurrentYear
/ us-gaap_IncomeTaxAuthorityAxis
= country_GB
             
Foreign Statutory Corporate Tax Rate, Year One 20.00%prgo_ForeignStatutoryCorporateTaxRateYearOne
/ us-gaap_IncomeTaxAuthorityAxis
= country_GB
             
MEXICO                
Income Taxes [Line Items]                
Foreign Statutory Corporate Tax Rate, Current Year 30.00%prgo_ForeignStatutoryCorporateTaxRateCurrentYear
/ us-gaap_IncomeTaxAuthorityAxis
= country_MX