XML 41 R50.htm IDEA: XBRL DOCUMENT v2.4.1.9
Goodwill and Intangible Assets (Goodwill) (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Goodwill [Roll Forward]    
Balance, beginning $ 114.2us-gaap_Goodwill $ 112.5us-gaap_Goodwill
Disposition (0.5)us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit  
Foreign currency translation (5.1)us-gaap_GoodwillTranslationAdjustments 1.7us-gaap_GoodwillTranslationAdjustments
Balance, ending 108.6us-gaap_Goodwill 114.2us-gaap_Goodwill
Packaging Systems [Member]    
Goodwill [Roll Forward]    
Balance, beginning 38.0us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= wst_PackagingSystemsMember
36.7us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= wst_PackagingSystemsMember
Disposition 0us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit
/ us-gaap_StatementBusinessSegmentsAxis
= wst_PackagingSystemsMember
 
Foreign currency translation (3.9)us-gaap_GoodwillTranslationAdjustments
/ us-gaap_StatementBusinessSegmentsAxis
= wst_PackagingSystemsMember
1.3us-gaap_GoodwillTranslationAdjustments
/ us-gaap_StatementBusinessSegmentsAxis
= wst_PackagingSystemsMember
Balance, ending 34.1us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= wst_PackagingSystemsMember
38.0us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= wst_PackagingSystemsMember
Delivery Systems [Member]    
Goodwill [Roll Forward]    
Balance, beginning 76.2us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= wst_DeliverySystemsMember
75.8us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= wst_DeliverySystemsMember
Disposition (0.5)us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit
/ us-gaap_StatementBusinessSegmentsAxis
= wst_DeliverySystemsMember
 
Foreign currency translation (1.2)us-gaap_GoodwillTranslationAdjustments
/ us-gaap_StatementBusinessSegmentsAxis
= wst_DeliverySystemsMember
0.4us-gaap_GoodwillTranslationAdjustments
/ us-gaap_StatementBusinessSegmentsAxis
= wst_DeliverySystemsMember
Balance, ending $ 74.5us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= wst_DeliverySystemsMember
$ 76.2us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= wst_DeliverySystemsMember