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(Daikyo) [Member] Daikyo Seiko, Ltd. (Daikyo) [Member] Statement [Line Items] Statement [Line Items] SEC Schedule, 12-09, Valuation Allowances and Reserves [Domain] SEC Schedule, 12-09, Valuation Allowances and Reserves [Domain] Line of credit, noncurrent Long-term Line of Credit, Noncurrent Stock Options, Weighted Average Exercise Price [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Employee Stock Purchase Plan (ESPP) Employee Stock Purchase Plan (ESPP) [Member] Employee Stock Purchase Plan (ESPP) [Member] Activity related to stock-based compensation Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture Retirement Plan Type [Domain] Retirement Plan Type [Domain] Royalty acceleration Deferred Tax Assets, Royalty Acceleration Deferred Tax Assets, Royalty Acceleration Debt Disclosure [Abstract] Debt Disclosure [Abstract] Revenue recognized during the period Contract With Customer, Liability, Revenue Recognized During The Period Contract With Customer, Liability, Revenue Recognized During The Period Percentage of current market price for sales to eligible employees Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent Property, Plant and Equipment, Type [Axis] Long-Lived Tangible Asset [Axis] Valuation allowance Deferred Tax Assets, Valuation Allowance Corporate and Unallocated Corporate, Non-Segment [Member] Customer [Axis] Customer [Axis] Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Benefit Plans Retirement Benefits [Text Block] Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Document Annual Report Document Annual Report Forecast Forecast [Member] Prior service cost arising during period, net of tax of $0.5 Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), after Tax Type of Deferred Compensation [Axis] Equity-Based Arrangements, Individual Contracts, Type of Deferred Compensation [Axis] Total Assets Assets Assets Non-Employee Directors Director [Member] Adjustments above/(below) target (in dollars per share) Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Adjustments Above (Below) Target, Weighted Average Grant Date Fair Value Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Adjustments Above (Below) Target, Weighted Average Grant Date Fair Value Interest paid, net of amounts capitalized Interest Paid, Excluding Capitalized Interest, Operating Activities Restructuring and related cost, expected cost Restructuring and Related Cost, Expected Cost Geographical [Domain] Geographical [Domain] The West Company Mexico, S.A. de C.V. The West Company Mexico, S.A. de C.V. [Member] The West Company Mexico, S.A. de C.V. 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No documentation exists for this element. -- Schedule of Effective Income Tax Rate Reconciliation Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Accounts payable Accounts Payable, Current Depreciation and Amortization Depreciation, Depletion and Amortization Schedule of Assets and Liabilities Measured at Fair Value Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Accumulated other comprehensive loss Total AOCI Attributable to Parent [Member] Increase in inventories Increase (Decrease) in Inventories Contract assets, December 31, 2020 Contract assets, December 31, 2021 Contract with Customer, Asset, after Allowance for Credit Loss Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Other items Other Operating Income (Expense), Net Financial Instruments [Domain] Financial Instruments [Domain] Gain on restructuring-related sale of assets Gain (Loss) on Sale of Assets and Asset Impairment Charges Expiration Period [Domain] Expiration Period [Domain] [Domain] for Expiration Period [Axis] Long Long [Member] Other expense (income) Total other expense Other Income (Expense) The total amount of other income and expense items that are associated with the entity's normal revenue producing operation. 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Interest Payable, Current Proprietary Products Proprietary Products [Member] Proprietary Products [Member] Percentage of global plan assets Defined Benefit Plan, Assumptions Used in Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets, Percentage of Total Plan Assets Defined Benefit Plan, Assumptions Used in Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets, Percentage of Total Plan Assets Derivative (gain) loss recognized in income, fair value hedges Gain (Loss) on Fair Value Hedges Recognized in Earnings Reduction for expiration of statute of limitations/audits Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations Estimated annual amortization expense, 2026 Finite-Lived Intangible Asset, Expected Amortization, Year Five Auditor Firm ID Auditor Firm ID Cross-currency swap Currency Swap [Member] Accrued retirement plans (excluding pension) Liability, Other Retirement Benefits Net cash used in 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Assets, Current Rate of compensation increase Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase Restructuring and related cost, cumulative cost incurred Restructuring and Related Cost, Cost Incurred to Date Type of Deferred Compensation, All Types [Domain] Equity-Based Arrangements, Individual Contracts, Type of Deferred Compensation [Domain] Balance at beginning of period Balance at end of period SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount Cost of goods and services sold Cost of Sales [Member] Income taxes payable Accrued Income Taxes, Current Development and licensing income Development and licensing income Development And Licensing Income The amount of consideration recognized during the period under a development, licensing and supply agreement entered into with a customer. 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