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Borrowings (Tables)
3 Months Ended
Mar. 31, 2021
Debt Disclosure [Abstract]  
Schedule of Borrowings
Borrowings at March 31, 2021 and December 31, 2020 consisted of the following: 
March 31,
2021
December 31,
2020
4.20% Senior Notes, due December 2021
350,000 350,000 
3.20% Senior Notes, due June 2023
100,000 100,000 
3.37% Senior Notes, due June 2025
100,000 100,000 
3.00% Senior Notes, due May 2030
500,000 500,000 
Other borrowings159 215 
Total borrowings1,050,159 1,050,215 
Less current portion46 88 
Less deferred debt issuance costs4,621 4,824 
Less unaccreted debt discount903 949 
Total long-term borrowings$1,044,589 $1,044,354