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Long-Term Debt - Schedule of Long-Term Debt (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Debt Instrument [Line Items]    
Total current portion of long-term debt $ 42,500 $ 70,000
Total notes 1,548,495 1,548,208
Long-term credit agreements 444,375 490,000
Debt issuance costs (contra) (12,433) (12,302)
Total long-term debt less unamortized discount and debt issuance costs 1,980,437 2,025,906
Current portion of long-term debt 42,500 70,000
Total debt 2,022,937 2,095,906
5-year Term-Loan Facility Expires in 2026    
Debt Instrument [Line Items]    
Total current portion of long-term debt 12,500 0
Long-term credit agreements 234,375 0
5-year Term-Loan Facility Expires in 2022    
Debt Instrument [Line Items]    
Total current portion of long-term debt 0 40,000
Long-term credit agreements 0 250,000
5-year Term-Loan Facility Expires in 2023    
Debt Instrument [Line Items]    
Total current portion of long-term debt 30,000 30,000
Long-term credit agreements 210,000 240,000
4.200% Senior Notes, Semi-Annual Interest Payments, Balloon Due 2024    
Debt Instrument [Line Items]    
Total notes 499,574 499,416
4.500% Senior Notes, Semi-Annual Interest Payments, Balloon Due 2029    
Debt Instrument [Line Items]    
Total notes 349,596 349,540
2.375% Senior Note due 2031, Semi-Annual Interest Payments, Balloon Due 2031    
Debt Instrument [Line Items]    
Total notes 699,325 699,252
5-year Revolving-Loan Facility, Periodic Interest Payments, LIBOR Plus up to 1.500%, Plus Commitment Fees up to 0.225%, Expires October 27, 2026    
Debt Instrument [Line Items]    
Long-term credit agreements 0 0
5-year Revolving-Loan Facility, Periodic Interest Payments, LIBOR Plus up to 1.500%, Plus Commitment Fees up to 0.250%, Expires June 28, 2022    
Debt Instrument [Line Items]    
Long-term credit agreements $ 0 $ 0