XML 49 R39.htm IDEA: XBRL DOCUMENT
v3.22.2.2

Revenue - Revenue Recognition (Details) - Revenue Benchmark | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Customer Concentration Risk |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Percentage of net sales | 100.00% | 100.00% | 100.00% | 100.00%
Customer Concentration Risk | Biologics |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Percentage of net sales | 41.00% | 40.00% | 42.00% | 40.00%
Customer Concentration Risk | Generics |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Percentage of net sales | 18.00% | 18.00% | 18.00% | 17.00%
Customer Concentration Risk | Pharma |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Percentage of net sales | 24.00% | 24.00% | 24.00% | 24.00%
Customer Concentration Risk | Contract-Manufactured Products |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Percentage of net sales | 17.00% | 18.00% | 16.00% | 19.00%
Product Concentration Risk |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Percentage of net sales | 100.00% | 100.00% | 100.00% | 100.00%
Product Concentration Risk | High-Value Product Components |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Percentage of net sales | 54.00% | 55.00% | 56.00% | 54.00%
Product Concentration Risk | High-Value Product Delivery Devices |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Percentage of net sales | 6.00% | 5.00% | 5.00% | 4.00%
Product Concentration Risk | Standard Packaging |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Percentage of net sales | 23.00% | 22.00% | 23.00% | 23.00%
Product Concentration Risk | Contract-Manufactured Products |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Percentage of net sales | 17.00% | 18.00% | 16.00% | 19.00%
Geographic Concentration Risk |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Percentage of net sales | 100.00% | 100.00% | 100.00% | 100.00%
Geographic Concentration Risk | Americas |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Percentage of net sales | 53.00% | 45.00% | 48.00% | 45.00%
Geographic Concentration Risk | Europe, Middle East, Africa |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Percentage of net sales | 38.00% | 45.00% | 43.00% | 45.00%
Geographic Concentration Risk | Asia Pacific |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Percentage of net sales | 9.00% | 10.00% | 9.00% | 10.00%

X
- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9054-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI https://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13531-108611 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13537-108611 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI https://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592 + Details
Name: | us-gaap_ConcentrationRiskPercentage1
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DisaggregationOfRevenueLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_SalesRevenueNetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CustomerConcentrationRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MajorCustomersAxis=wst_BiologicsCustomersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MajorCustomersAxis=wst_GenericsCustomersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MajorCustomersAxis=wst_PharmaCustomersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MajorCustomersAxis=wst_ContractManufacturedCustomersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByTypeAxis=us-gaap_ProductConcentrationRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=wst_HighValueComponentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=wst_StandardPackagingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=wst_DeliveryDevicesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=wst_ContractManufacturedProductsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByTypeAxis=us-gaap_GeographicConcentrationRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=srt_AmericasMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=us-gaap_EMEAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=srt_AsiaPacificMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |