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Hedging Instruments (Narrative) (Details) |  |  |  | 3 Months Ended | 9 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2028 USD ($) | Mar. 31, 2028 USD ($) | Jun. 18, 2025 USD ($) | Sep. 30, 2023 USD ($) | Jun. 30, 2023 USD ($) | Sep. 30, 2022 USD ($) | Sep. 30, 2023 USD ($) | Sep. 30, 2022 USD ($) | Sep. 30, 2023 EUR (€) | Jun. 30, 2023 EUR (€) | Mar. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Jun. 30, 2015 EUR (€)
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Credit facility |  |  |  | $ 250,000,000 |  |  | $ 250,000,000 |  |  |  |  | $ 579,000,000 |
Unrealized gain on Euro-denominated notes, net of tax |  |  |  | 2,331,000 |  | $ 5,495,000 | 488,000 | $ 11,028,000 |  |  |  |  |
Proceeds from net investment hedges |  |  |  |  |  |  | 6,256,000 | 0 |  |  |  |  |
Unrealized gain (losses) on cross currency swaps, net of tax |  |  |  | 1,858,000 |  | 5,319,000 | (1,158,000) | 10,597,000 |  |  |  |  |
Excluded component recognized as reduction of interest |  |  |  | 300,000 |  | $ 700,000 | 1,800,000 | $ 2,100,000 |  |  |  |  |
Euro-Denominated Notes |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount | € |  |  |  |  |  |  |  |  |  |  |  |  | € 88,900,000
Stated interest rate (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  | 1.785%
Interest Rate Swap |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated net amount of gain expected to be reclassified out of accumulated other comprehensive income and into earnings within next 12 months |  |  |  |  |  |  | 2,900,000 |  |  |  |  |  |
Derivative, fixed interest rate (as a percent) |  |  |  |  |  |  |  |  |  |  | 3.90% |  |
Foreign Currency Exchange Contracts |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated net amount of gain expected to be reclassified out of accumulated other comprehensive income and into earnings within next 12 months |  |  |  |  |  |  | $ 5,600,000 |  |  |  |  |  |
General duration of foreign currency exchange contracts (in months) |  |  |  |  |  |  | 24 months |  |  |  |  |  |
Derivative, notional amount |  |  |  | 256,800,000 |  |  | $ 256,800,000 |  |  |  |  | 258,200,000 |
Cross Currency Swaps | Derivatives and non-derivatives designated as hedging instruments |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, notional amount | € |  |  |  |  |  |  |  |  |  | € 90,000,000 |  |  |
Proceeds from net investment hedges |  |  |  |  | $ 6,300,000 |  |  |  |  |  |  |  |
Cross Currency Swaps | Derivatives and non-derivatives designated as hedging instruments |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, notional amount | € |  |  |  |  |  |  |  |  | € 15,000,000 |  |  |  |
Cross Currency Swaps | Forecast | Derivatives and non-derivatives designated as hedging instruments |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from net investment hedges |  |  | $ 17,500,000 |  |  |  |  |  |  |  |  |  |
Cross Currency Swaps | Derivatives and non-derivatives designated as hedging instruments |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, notional amount | € |  |  |  |  |  |  |  |  | 35,000,000 |  |  |  |
Cross Currency Swaps | Forecast | Derivatives and non-derivatives designated as hedging instruments |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from net investment hedges |  | $ 37,800,000 |  |  |  |  |  |  |  |  |  |  |
Cross Currency Swaps | Derivatives and non-derivatives designated as hedging instruments |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, notional amount | € |  |  |  |  |  |  |  |  | € 90,000,000 |  |  |  |
Cross Currency Swaps | Forecast | Derivatives and non-derivatives designated as hedging instruments |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from net investment hedges | $ 98,200,000 |  |  |  |  |  |  |  |  |  |  |  |
Minimum | Foreign Currency Exchange Contracts |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Cash flow hedge, hedge percentage of estimated exposure from intercompany products purchases and sales (as a percent) |  |  |  |  |  |  | 75.00% |  |  |  |  |  |
Maximum | Foreign Currency Exchange Contracts |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Cash flow hedge, hedge percentage of estimated exposure from intercompany products purchases and sales (as a percent) |  |  |  |  |  |  | 85.00% |  |  |  |  |  |
Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Credit facility |  |  |  | $ 250,000,000 |  |  | $ 250,000,000 |  |  |  |  | $ 250,000,000 |
Debt instrument, face amount |  |  |  |  |  |  |  |  |  |  | $ 250,000,000 |  |
Term Loan | Interest Rate Swap |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Credit facility |  |  |  |  |  |  |  |  |  |  | $ 250,000,000 |  |

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- Definition The carrying value as of the balance sheet date of the current portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(13)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 + Details
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- Definition Maximum period of time the entity is hedging its exposure to variability in future cash flows for forecasted transactions, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Excludes forecasted transactions related to payment of variable interest on existing financial instruments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -SubTopic 30 -Topic 815 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480870/815-30-50-1 + Details
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