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Long-Term Debt (Tables)
12 Months Ended
Dec. 31, 2020
Debt Disclosure [Abstract]  
Long-Term Debt
Long-term debt consisted of the following at December 31, 2020 and 2019 (in thousands):
December 31,
20202019
1.125% Notes
$610,800 $554,900 
1.625% Notes
610,800 554,900 
1.875% Senior notes
480,007 436,073 
3.45% Senior notes
300,000 300,000 
4.15% Senior notes
425,000 425,000 
5.45% Senior notes
350,000 350,000 
Floating rate notes200,000 200,000 
Credit facilities223,900 — 
Commercial paper notes325,000 186,700 
Variable-rate foreign bank loans7,702 7,296 
Finance lease obligations59,181 59,524 
Unamortized discount and debt issuance costs(20,332)(24,136)
Total long-term debt3,572,058 3,050,257 
Less amounts due within one year804,677 187,336 
Long-term debt, less current portion$2,767,381 $2,862,921