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Debt (Tables)
 3 Months Ended
Mar. 31, 2022
Debt Disclosure [Abstract]  
Debt Debt consisted of the following at March 31, 2022:
U.S. DollarOther Principal
Trading
Currencies		Total
3.67% $50 million ten-year Senior Notes due December 17, 2022$50,000 $— $50,000 
4.10% $50 million ten-year Senior Notes due September 19, 202350,000 — 50,000 
3.84% $125 million ten-year Senior Notes due September 19, 2024125,000 — 125,000 
4.24% $125 million ten-year Senior Notes due June 25, 2025125,000 — 125,000 
3.91% $75 million ten-year Senior Notes due June 25, 202975,000 — 75,000 
2.83% $125 million twelve-year Senior Notes due July 22. 2033125,000 — 125,000 
3.19% $50 million fifteen-year Senior Notes due January 24, 203550,000 — 50,000 
2.81% $150 million fifteen-year Senior Note due March 17, 2037150,000 — 150,000 
1.47% Euro 125 million fifteen-year Senior Notes due June 17, 2030— 138,120 138,120 
1.30% Euro 135 million fifteen-year Senior Notes due November 6, 2034— 149,170 149,170 
1.06% Euro 125 million fifteen-year Senior Notes due March 19, 2036— 138,120 138,120 
Senior notes debt issuance costs, net(2,426)(1,586)(4,012)
Total Senior Notes
747,574 423,824 1,171,398 
$1.25 billion Credit Agreement, interest at LIBOR plus 87.5 basis points540,346 102,002 642,348 
Other local arrangements3,311 55,037 58,348 
Total debt1,291,231 580,863 1,872,094 
Less: current portion(50,356)(54,906)(105,262)
Total long-term debt$1,240,875 $525,957 $1,766,832