XML 94 R85.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Segment Information (Textuals) (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 segment | Dec. 31, 2013 | Dec. 31, 2012
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |
Segment Reporting, Disclosure of Major Customers | 0.1 |  |
Net sales | $ 1,421.4 us-gaap_SalesRevenueNet | $ 1,368.4 us-gaap_SalesRevenueNet | $ 1,266.4 us-gaap_SalesRevenueNet
Gains (Losses) on extinguishment of debt, less than | 0.1 wst_GainsLossesonextinguishmentofdebtlessthan |  |
Number of reportable segments | 2 us-gaap_NumberOfReportableSegments |  |
Packaging Systems [Member] |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |
Net sales | 1,019.7 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = wst_PackagingSystemsMember | 996.0 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = wst_PackagingSystemsMember | 915.1 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = wst_PackagingSystemsMember
Number of operating segments | 3 us-gaap_NumberOfOperatingSegments / us-gaap_StatementBusinessSegmentsAxis = wst_PackagingSystemsMember |  |
Delivery Systems [Member] |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |
Net sales | 402.5 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = wst_DeliverySystemsMember | 374.1 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = wst_DeliverySystemsMember | 352.1 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = wst_DeliverySystemsMember
Corporate and Eliminations [Member] |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |
Net sales | $ (0.8)us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = wst_CorporateAndEliminationsMember | $ (1.7)us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = wst_CorporateAndEliminationsMember | $ (0.8)us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = wst_CorporateAndEliminationsMember

X
- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References No definition available. + Details
Name: | us-gaap_NumberOfOperatingSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
Name: | us-gaap_NumberOfReportableSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
Name: | us-gaap_SalesRevenueNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Disclosure of the extent of enterprise reliance on its major customers. For example, includes revenues from transactions with a single external customer amounting to 10 percent or more of the entity's revenues, the total amount of revenues from each such customer, and the identity of the segment or segments reporting the revenues. A group of entities that the entity knows to be under common control generally will be considered a single customer for inclusion in this item. The federal government, a state government, a local government (for example, a county or municipality), or a foreign government each will generally be considered as a single customer for inclusion in this item. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9054-108599 + Details
Name: | us-gaap_SegmentReportingDisclosureOfMajorCustomers
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Gains (Losses) on extinguishment of debt, less than + References No definition available. + Details
Name: | wst_GainsLossesonextinguishmentofdebtlessthan
Namespace Prefix: | wst_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=wst_CorporateAndEliminationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=wst_DeliverySystemsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=wst_PackagingSystemsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |