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Goodwill And Intangible Assets (Carrying Value And Accumulated Amortization Of Intangible Assets) (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]    
Acquisition Cost $ 432.5us-gaap_FiniteLivedIntangibleAssetsGross $ 415.5us-gaap_FiniteLivedIntangibleAssetsGross
Accumulated Amortization (67.9)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization (49.9)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Currency Translation (0.1)pol_FiniteLivedIntangibleAssetsCurrencyTranslationDTC 0.2pol_FiniteLivedIntangibleAssetsCurrencyTranslationDTC
Impairment (1.8)pol_FiniteLivedIntangibleAssetsImpairment  
Net 362.7us-gaap_FiniteLivedIntangibleAssetsNet 365.8us-gaap_FiniteLivedIntangibleAssetsNet
Customer relationships    
Finite-Lived Intangible Assets [Line Items]    
Acquisition Cost 199.4us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember
181.5us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember
Accumulated Amortization (32.6)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember
(24.1)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember
Currency Translation 0pol_FiniteLivedIntangibleAssetsCurrencyTranslationDTC
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember
0.1pol_FiniteLivedIntangibleAssetsCurrencyTranslationDTC
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember
Impairment (1.3)pol_FiniteLivedIntangibleAssetsImpairment
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember
 
Net 165.5us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember
157.5us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember
Patents, technology and other    
Finite-Lived Intangible Assets [Line Items]    
Acquisition Cost 133.4us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= pol_PatentsTechnologyAndOtherMember
134.3us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= pol_PatentsTechnologyAndOtherMember
Accumulated Amortization (35.3)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= pol_PatentsTechnologyAndOtherMember
(25.8)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= pol_PatentsTechnologyAndOtherMember
Currency Translation (0.1)pol_FiniteLivedIntangibleAssetsCurrencyTranslationDTC
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= pol_PatentsTechnologyAndOtherMember
0.1pol_FiniteLivedIntangibleAssetsCurrencyTranslationDTC
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= pol_PatentsTechnologyAndOtherMember
Impairment (0.5)pol_FiniteLivedIntangibleAssetsImpairment
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= pol_PatentsTechnologyAndOtherMember
 
Net 97.5us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= pol_PatentsTechnologyAndOtherMember
108.6us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= pol_PatentsTechnologyAndOtherMember
Indefinite-lived trade names    
Finite-Lived Intangible Assets [Line Items]    
Acquisition Cost 96.3us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_TradeNamesMember
96.3us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_TradeNamesMember
Accumulated Amortization 0us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_TradeNamesMember
0us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_TradeNamesMember
Currency Translation 0pol_FiniteLivedIntangibleAssetsCurrencyTranslationDTC
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_TradeNamesMember
0pol_FiniteLivedIntangibleAssetsCurrencyTranslationDTC
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_TradeNamesMember
Impairment 0pol_FiniteLivedIntangibleAssetsImpairment
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_TradeNamesMember
 
Net 96.3us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_TradeNamesMember
96.3us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_TradeNamesMember
In-process research and development    
Finite-Lived Intangible Assets [Line Items]    
Acquisition Cost 3.4us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_InProcessResearchAndDevelopmentMember
3.4us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_InProcessResearchAndDevelopmentMember
Accumulated Amortization 0us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_InProcessResearchAndDevelopmentMember
0us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_InProcessResearchAndDevelopmentMember
Currency Translation 0pol_FiniteLivedIntangibleAssetsCurrencyTranslationDTC
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_InProcessResearchAndDevelopmentMember
0pol_FiniteLivedIntangibleAssetsCurrencyTranslationDTC
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_InProcessResearchAndDevelopmentMember
Impairment 0pol_FiniteLivedIntangibleAssetsImpairment
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_InProcessResearchAndDevelopmentMember
 
Net $ 3.4us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_InProcessResearchAndDevelopmentMember
$ 3.4us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_InProcessResearchAndDevelopmentMember