Long-Term Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Total long-term Debt	$ 3,140,840	$ 3,050,257
Current portion of long-term debt	35,615	187,336
Long-term debt	3,105,225	2,862,921
Unsecured debt \| 1.125% Notes
Debt Instrument [Line Items]
Total long-term Debt	547,156	549,241
Unsecured debt \| 1.625% Notes
Debt Instrument [Line Items]
Total long-term Debt	545,560	549,204
Unsecured debt \| Floating Rate Notes
Debt Instrument [Line Items]
Total long-term Debt	199,037	198,831
Senior notes \| 1.875% Senior Notes
Debt Instrument [Line Items]
Total long-term Debt	431,820	434,241
Senior notes \| 3.45% Senior Notes
Debt Instrument [Line Items]
Total long-term Debt	296,725	296,467
Senior notes \| 4.15% Senior Notes
Debt Instrument [Line Items]
Total long-term Debt	422,724	422,603
Senior notes \| 5.45% Senior Notes
Debt Instrument [Line Items]
Total long-term Debt	346,189	346,150
Revolving credit facility
Debt Instrument [Line Items]
Total long-term Debt	250,000	0
Commercial paper notes
Debt Instrument [Line Items]
Total long-term Debt	35,000	186,700
Variable-rate foreign bank loans
Debt Instrument [Line Items]
Total long-term Debt	7,300	7,296
Finance lease obligations
Debt Instrument [Line Items]
Total long-term Debt	$ 59,329	$ 59,524

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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