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Variable Interest Entities (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Dec. 31, 2014
Variable Interest Entity [Line Items]    
Total assets 8,067.9us-gaap_Assets $ 4,557.6us-gaap_Assets
Minority Shareholder Of SPIA [Member]    
Variable Interest Entity [Line Items]    
Interest in entity 50.90%us-gaap_MinorityInterestOwnershipPercentageByParent
/ dei_LegalEntityAxis
= pah_MinorityShareholderOfSPIAMember
 
Subsidiaries [Member]    
Variable Interest Entity [Line Items]    
Interest in entity 45.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
 
SPIA [Member]    
Variable Interest Entity [Line Items]    
Total assets 7.2us-gaap_Assets
/ dei_LegalEntityAxis
= pah_SPIAMember
 
Sale Of Platform Products [Member] | Product Concentration Risk [Member] | Saphyto S.A. [Member]    
Variable Interest Entity [Line Items]    
Percentage of sales that are Platform products 94.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_ProductConcentrationRiskMember
/ dei_LegalEntityAxis
= pah_SaphytoS.A.Member
/ us-gaap_RelatedPartyTransactionAxis
= pah_SaleOfPlatformProductsMember
 
SPIA [Member]    
Variable Interest Entity [Line Items]    
Equity Method Investment, Ownership Percentage 31.95%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= pah_SPIAMember