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Debt (Tables)
 12 Months Ended
Dec. 31, 2021
Debt Disclosure [Abstract]  
Schedule of Debt .    DEBT
Debt consisted of the following at December 31:
20212020
3.67% $50 million 10-year Senior Notes due December 17, 2022$50,000 $50,000 
4.10% $50 million 10-year Senior Notes due September 19, 202350,000 50,000 
3.84% $125 million 10-year Senior Notes due September 19, 2024125,000 125,000 
4.24% $125 million 10-year Senior Notes due June 25, 2025125,000 125,000 
3.91% $75 million 10-year Senior Notes due June 25, 202975,000 75,000 
2.83% $125 million 12-year Senior Notes due July 22, 2033125,000 — 
3.19% $50 million 15-year Senior Notes due January 24, 203550,000 50,000 
1.47% EUR 125 million 15-year Senior Notes due June 17, 2030141,789 153,299 
1.30% EUR 135 million 15-year Senior Notes due November 6, 2034153,132 165,563 
1.06% EUR 125 million 15-year Senior Notes due March 19, 2036141,789 — 
Senior Notes debt issuance costs, net(4,115)(2,760)
Total Senior Notes1,032,595 791,102 
$1.25 billion Credit Agreement, interest at LIBOR plus 87.5 basis points(1)
595,041 491,419 
Other local arrangements54,306 51,970 
Total debt1,681,942 1,334,491 
Less: current portion(101,134)(50,317)
Total long-term debt$1,580,808 $1,284,174