Long-Term Debt - Schedule of Long-term Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
Debt Instrument [Line Items]
Total debt - principal	$ 3,382,561	$ 3,271,969	$ 3,051,150
Less unamortized debt issuance costs and debt discount	24,147	20,716	21,926
Debt long term and short term less unamortized debt issuance costs combined amount	3,358,414	3,251,253	3,029,224
Less current portion	195,122	28,036	854,653
Long-term debt	3,163,292	3,223,217	2,174,571
Bank debt
Debt Instrument [Line Items]
Total debt - principal	597,030	930,407	856,239
Finance Leases
Debt Instrument [Line Items]
Total debt - principal	33,936	34,480	32,582
Bank Revolving Loans | Bank debt
Debt Instrument [Line Items]
Total debt - principal	137,000	0	827,000
Less current portion	137,000
U S Term Loans | Bank debt
Debt Instrument [Line Items]
Total debt - principal	400,000	900,000	0
Other Foreign Bank Revolving and Term Loans | Bank debt
Debt Instrument [Line Items]
Total debt - principal	60,030	30,407	29,239
Less current portion	56,200
Senior Notes | 4¾% Notes
Debt Instrument [Line Items]
Total debt - principal	300,000	300,000	300,000
Senior Notes | 3¼% Notes
Debt Instrument [Line Items]
Total debt - principal	763,945	795,307	713,490
Senior Notes | 4⅛% Notes
Debt Instrument [Line Items]
Total debt - principal	600,000	600,000	600,000
Senior Notes | 2¼% Notes
Debt Instrument [Line Items]
Total debt - principal	587,650	611,775	548,839
Senior Notes | 1.4% Notes
Debt Instrument [Line Items]
Total debt - principal	500,000	$ 0	$ 0
Finance Leases
Debt Instrument [Line Items]
Less current portion	$ 1,900