Debt Facilities - Summary of Senior Notes (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Nov. 18, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Long term debt, gross	$ 1,370,118		$ 1,388,524
Add amount representing unamortized debt premium	1,768		1,882
Total long term debt	10,401,097
Senior Notes
Debt Instrument [Line Items]
Long term debt, gross	9,029,211		8,500,125
Less amount representing unamortized debt discount and debt issuance cost	(78,030)		(75,372)
Add amount representing unamortized debt premium	1,716		5,031
Total long term debt	8,952,897		8,429,784
Less current portion	(643,224)		(300,999)
Long term debt, excluding current maturities	$ 8,309,673		8,128,785
Senior Notes \| 5.000% Infomart Senior Notes
Debt Instrument [Line Items]
Interest rate (percent)	5.00%
Long term debt, gross	$ 450,000		$ 750,000
Effective interest rate (percent)	4.46%		4.40%
Senior Notes \| 5.375% Senior Notes due 2022
Debt Instrument [Line Items]
Interest rate (percent)	5.375%
Long term debt, gross	$ 343,711		$ 750,000
Effective interest rate (percent)	5.56%		5.56%
Senior Notes \| 5.375% Senior Notes due 2023
Debt Instrument [Line Items]
Interest rate (percent)	5.375%
Long term debt, gross	$ 0		$ 1,000,000
Effective interest rate (percent)	0.00%		5.51%
Senior Notes \| 2.625% Senior Notes due 2024
Debt Instrument [Line Items]
Interest rate (percent)	2.625%	2.625%
Long term debt, gross	$ 1,000,000		$ 0
Effective interest rate (percent)	2.79%		0.00%
Less amount representing unamortized debt discount and debt issuance cost		$ (8,100)
Senior Notes \| 2.875% Euro Senior Notes due 2024
Debt Instrument [Line Items]
Interest rate (percent)	2.875%
Long term debt, gross	$ 841,500		$ 859,125
Effective interest rate (percent)	3.08%		3.08%
Senior Notes \| 5.750% Senior Notes due 2025
Debt Instrument [Line Items]
Interest rate (percent)	5.75%
Long term debt, gross	$ 0		$ 500,000
Effective interest rate (percent)	0.00%		5.88%
Senior Notes \| 2.875% Euro Senior Notes due 2025
Debt Instrument [Line Items]
Interest rate (percent)	2.875%
Long term debt, gross	$ 1,122,000		$ 1,145,500
Effective interest rate (percent)	3.04%		3.04%
Senior Notes \| 2.900% Senior Notes due 2026
Debt Instrument [Line Items]
Interest rate (percent)	2.90%	2.90%
Long term debt, gross	$ 600,000		$ 0
Effective interest rate (percent)	3.04%		0.00%
Less amount representing unamortized debt discount and debt issuance cost		$ (5,900)
Senior Notes \| 5.875% Senior Notes due 2026
Debt Instrument [Line Items]
Interest rate (percent)	5.875%
Long term debt, gross	$ 1,100,000		$ 1,100,000
Effective interest rate (percent)	6.03%		6.03%
Senior Notes \| 2.875% Euro Senior Notes due 2026
Debt Instrument [Line Items]
Interest rate (percent)	2.875%
Long term debt, gross	$ 1,122,000		$ 1,145,500
Effective interest rate (percent)	3.04%		3.04%
Senior Notes \| 5.375% Senior Notes due 2027
Debt Instrument [Line Items]
Interest rate (percent)	5.375%
Long term debt, gross	$ 1,250,000		$ 1,250,000
Effective interest rate (percent)	5.51%		5.51%
Senior Notes \| 3.200% Senior Notes due 2029
Debt Instrument [Line Items]
Interest rate (percent)	3.20%	3.20%
Long term debt, gross	$ 1,200,000		$ 0
Effective interest rate (percent)	3.30%		0.00%
Less amount representing unamortized debt discount and debt issuance cost		$ (11,500)

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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