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Debt (Details) € in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
Debt (Details) € in Thousands, $ in Thousands	Jun. 30, 2022 USD ($) Rate	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) Rate	Jun. 30, 2021 USD ($)	Jun. 30, 2022 EUR (€) Rate	Dec. 31, 2021 USD ($)
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Senior Notes	$ 1,152,466		$ 1,152,466
Unamortized Debt Issuance Expense	(3,887)		(3,887)
Line of Credit Facility, Fair Value of Amount Outstanding	716,000		716,000
Total debt	1,928,032		1,928,032
Debt, Current	(106,574)		(106,574)
Long-term Debt	1,821,458		1,821,458
Line of Credit Facility, Remaining Borrowing Capacity	528,000		528,000
Cash and Cash Equivalents, at Carrying Value	109,449		109,449			$ 98,564
Gain (Loss) on Derivative Used in Net Investment Hedge, after Tax	19,100	$ 5,800	30,400	$ 11,800
Cumulative (gain) loss in other other comprehensive income related to the change in a net investment hedge.	35,900		35,900
Us Dollar Amounts Member
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Senior Notes	747,666		747,666
Unamortized Debt Issuance Expense	(2,334)		(2,334)
Line of Credit Facility, Fair Value of Amount Outstanding	514,491		514,491
Total debt	1,265,386		1,265,386
Debt, Current	(50,358)		(50,358)
Long-term Debt	1,215,028		1,215,028
Other Principal Trading Currencies [Member]
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Senior Notes	404,800		404,800
Unamortized Debt Issuance Expense	(1,553)		(1,553)
Line of Credit Facility, Fair Value of Amount Outstanding	201,509		201,509
Total debt	662,646		662,646
Debt, Current	(56,216)		(56,216)
Long-term Debt	$ 606,430		$ 606,430
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
3.67% Senior Notes [Member] \| Us Dollar Amounts Member
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Senior Notes	50,000		$ 50,000
3.67% Senior Notes [Member] \| Other Principal Trading Currencies [Member]
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Senior Notes	$ 0		$ 0
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
4.10% Senior Notes [Member] \| Us Dollar Amounts Member
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Senior Notes	50,000		$ 50,000
4.10% Senior Notes [Member] \| Other Principal Trading Currencies [Member]
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Senior Notes	$ 0		$ 0
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
3.84% Senior Notes [Member] \| Us Dollar Amounts Member
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Senior Notes	125,000		$ 125,000
3.84% Senior Notes [Member] \| Other Principal Trading Currencies [Member]
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Senior Notes	$ 0		$ 0
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
4.24% Senior Notes [Member] \| Us Dollar Amounts Member
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Senior Notes	125,000		$ 125,000
4.24% Senior Notes [Member] \| Other Principal Trading Currencies [Member]
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Senior Notes	$ 0		$ 0
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	$ 131,933		$ 131,933
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	$ 131,933		$ 131,933
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	$ 142,487		$ 142,487
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	$ 142,487		$ 142,487
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	59,566		59,566
Other local arrangements [Member] \| Us Dollar Amounts Member
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Other Borrowings	3,229		3,229
Other local arrangements [Member] \| Other Principal Trading Currencies [Member]
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt
Other Borrowings	$ 56,337		$ 56,337
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	131,933		131,933
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	$ 131,933		$ 131,933
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