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Collaborative Arrangements (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Dec. 27, 2014
Dec. 28, 2013
Dec. 27, 2014
Dec. 28, 2013
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]        
Collaborative Agreement Transaction $ 53.2us-gaap_ResearchAndDevelopmentExpense $ 37.5us-gaap_ResearchAndDevelopmentExpense $ 89.8us-gaap_ResearchAndDevelopmentExpense $ 69.8us-gaap_ResearchAndDevelopmentExpense
Biotech [Member]        
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]        
Collaborative Agreement Transaction 10.0us-gaap_ResearchAndDevelopmentExpense
/ prgo_CollaborativePartnerAxis
= prgo_BiotechMember
     
Potential Contingent Milestone Payments 50.0prgo_PotentialContingentMilestonePayments
/ prgo_CollaborativePartnerAxis
= prgo_BiotechMember
     
Phase Three [Member] | Biotech [Member]        
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]        
Collaborative Agreement Transaction 5.0us-gaap_ResearchAndDevelopmentExpense
/ prgo_CollaborativePartnerAxis
= prgo_BiotechMember
/ prgo_ResearchDevelopmentStageAxis
= prgo_PhaseThreeMember
     
Final Phase [Member] | Biotech [Member]        
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]        
Collaborative Agreement Transaction $ 10.0us-gaap_ResearchAndDevelopmentExpense
/ prgo_CollaborativePartnerAxis
= prgo_BiotechMember
/ prgo_ResearchDevelopmentStageAxis
= prgo_FinalPhaseMember