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Debt (Details) € in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025 USD ($) Rate	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($) Rate	Sep. 30, 2024 USD ($)	Sep. 30, 2025 EUR (€) Rate	Dec. 31, 2024 USD ($)
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Senior Notes	$ 1,263,541		$ 1,263,541
Unamortized Debt Issuance Expense	(3,948)		(3,948)
Line of Credit Facility, Fair Value of Amount Outstanding	873,071		873,071
Total debt	2,209,858		2,209,858
Debt, Current	(63,609)		(63,609)
Long-term Debt	2,146,249		2,146,249
Line of Credit Facility, Remaining Borrowing Capacity	472,400		472,400
Cash and Cash Equivalent	69,065		69,065			$ 59,362
Gain (Loss) on Derivative Used in Net Investment Hedge, after Tax	(100)	$ 17,900	63,700	$ 4,600
Cumulative (gain) loss in other other comprehensive income related to the change in a net investment hedge.	21,400		21,400
Us Dollar Amounts Member
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Senior Notes	697,859		697,859
Unamortized Debt Issuance Expense	(2,141)		(2,141)
Line of Credit Facility, Fair Value of Amount Outstanding	491,556		491,556
Total debt	1,202,515		1,202,515
Debt, Current	(3,898)		(3,898)
Long-term Debt	1,198,617		1,198,617
Other Principal Trading Currencies [Member]
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Senior Notes	565,682		565,682
Unamortized Debt Issuance Expense	(1,807)		(1,807)
Line of Credit Facility, Fair Value of Amount Outstanding	381,515		381,515
Total debt	1,007,343		1,007,343
Debt, Current	(59,711)		(59,711)
Long-term Debt	$ 947,632		$ 947,632
3.67% Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage | Rate	3.67%		3.67%		3.67%
Debt Instrument, Maturity Date			Dec. 17, 2022
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Senior Notes	$ 50,000		$ 50,000
Debt Instrument, Term			10 years
4.10% Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage | Rate	4.10%		4.10%		4.10%
Debt Instrument, Maturity Date			Sep. 19, 2023
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Senior Notes	$ 50,000		$ 50,000
Debt Instrument, Term			10 years
3.84% Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage | Rate	3.84%		3.84%		3.84%
Debt Instrument, Maturity Date			Sep. 19, 2024
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Senior Notes	$ 125,000		$ 125,000
Debt Instrument, Term			10 years
4.24% Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage | Rate	4.24%		4.24%		4.24%
Debt Instrument, Maturity Date			Jun. 25, 2025
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Senior Notes	$ 125,000		$ 125,000
Debt Instrument, Term			10 years
3.91% Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage | Rate	3.91%		3.91%		3.91%
Debt Instrument, Maturity Date			Jun. 25, 2029
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Senior Notes	$ 75,000		$ 75,000
Debt Instrument, Term			10 years
3.91% Senior Notes [Member] | Us Dollar Amounts Member
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Senior Notes	75,000		$ 75,000
3.91% Senior Notes [Member] | Other Principal Trading Currencies [Member]
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Senior Notes	$ 0		$ 0
3.19% Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage | Rate	3.19%		3.19%		3.19%
Debt Instrument, Maturity Date			Jan. 24, 2035
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Senior Notes	$ 50,000		$ 50,000
Debt Instrument, Term			15 years
3.19% Senior Notes [Member] | Us Dollar Amounts Member
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Senior Notes	50,000		$ 50,000
3.19% Senior Notes [Member] | Other Principal Trading Currencies [Member]
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Senior Notes	$ 0		$ 0
1.47% EURO Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage | Rate	1.47%		1.47%		1.47%
Euro Notes - USD Amount	$ 146,260		$ 146,260
Debt Instrument, Maturity Date			Jun. 17, 2030
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Senior Notes | €					€ 125,000
Debt Instrument, Term			15 years
1.47% EURO Senior Notes [Member] | Us Dollar Amounts Member
Debt Instrument [Line Items]
Euro Notes - USD Amount	0		$ 0
1.47% EURO Senior Notes [Member] | Other Principal Trading Currencies [Member]
Debt Instrument [Line Items]
Euro Notes - USD Amount	$ 146,260		$ 146,260
1.30% Euro-Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage | Rate	1.30%		1.30%		1.30%
Euro Notes - USD Amount	$ 157,961		$ 157,961
Debt Instrument, Maturity Date			Nov. 06, 2034
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Senior Notes | €					€ 135
Debt Instrument, Term			15 years
1.30% Euro-Senior Notes [Member] | Us Dollar Amounts Member
Debt Instrument [Line Items]
Euro Notes - USD Amount	0		$ 0
1.30% Euro-Senior Notes [Member] | Other Principal Trading Currencies [Member]
Debt Instrument [Line Items]
Euro Notes - USD Amount	$ 157,961		$ 157,961
Credit facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage | Rate	0.975%		0.975%		0.975%
Debt Instrument, Maturity Date			Jun. 15, 2023
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Senior Notes	$ 1,250,000		$ 1,250,000
Other local arrangements [Member]
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Other Borrowings	73,246		73,246
Other local arrangements [Member] | Us Dollar Amounts Member
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Other Borrowings	13,100		13,100
Other local arrangements [Member] | Other Principal Trading Currencies [Member]
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Other Borrowings	$ 60,146		$ 60,146
Swiss Pension Loans [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage | Rate	0.85%		0.85%		0.85%
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Loan from Swiss Pension Plan USD Amount	$ 39,600		$ 39,600
Swiss Pension Loans (local currency)	38,000		38,000
1.06% Euro-Senior Notes
Debt Instrument [Line Items]
Euro Notes - USD Amount	146,260		146,260
1.06% Euro-Senior Notes | Us Dollar Amounts Member
Debt Instrument [Line Items]
Euro Notes - USD Amount	0		0
1.06% Euro-Senior Notes | Other Principal Trading Currencies [Member]
Debt Instrument [Line Items]
Euro Notes - USD Amount	$ 146,260		$ 146,260
2.83% Senior Notes
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage | Rate	2.83%		2.83%		2.83%
Debt Instrument, Maturity Date			Jul. 22, 2033
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Senior Notes	$ 125,000		$ 125,000
Debt Instrument, Term			12 years
2.83% Senior Notes | Us Dollar Amounts Member
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Senior Notes	125,000		$ 125,000
2.83% Senior Notes | Other Principal Trading Currencies [Member]
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Senior Notes	$ 0		$ 0
2.81% Senior Note
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage | Rate	2.81%		2.81%		2.81%
Debt Instrument, Maturity Date			Mar. 27, 2037
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Senior Notes	$ 150,000		$ 150,000
Debt Instrument, Term			15 years
2.81% Senior Note | Us Dollar Amounts Member
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Senior Notes	150,000		$ 150,000
2.81% Senior Note | Other Principal Trading Currencies [Member]
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Senior Notes	$ 0		$ 0
2.91% Senior Note
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage | Rate	2.91%		2.91%		2.91%
Debt Instrument, Maturity Date			Sep. 01, 2037
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Senior Notes	$ 150,000		$ 150,000
Debt Instrument, Term			15 years
2.91% Senior Note | Us Dollar Amounts Member
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Senior Notes	150,000		$ 150,000
5.45% Senior Note
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Senior Notes	150,000		150,000
5.45% Senior Note | Us Dollar Amounts Member
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Senior Notes	$ 150,000		$ 150,000

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