Stockholders' Equity - Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019		Mar. 31, 2019	Dec. 31, 2018
Summary of accumulated other comprehensive income/(loss) [Line Items]
Total accumulated other comprehensive loss	$ 17,066,337	$ 16,506,627	[1]	$ 16,047,831	$ 15,586,599
Foreign currency translation
Summary of accumulated other comprehensive income/(loss) [Line Items]
Total accumulated other comprehensive loss	(962,982)	(719,814)
Derivative and financial instruments designated as hedges
Summary of accumulated other comprehensive income/(loss) [Line Items]
Total accumulated other comprehensive loss	866,769	607,657
Total accumulated other comprehensive loss
Summary of accumulated other comprehensive income/(loss) [Line Items]
Total accumulated other comprehensive loss	$ (96,213)	$ (112,157)		$ (144,618)	$ (129,769)

[1] The consolidated balance sheet at December 31, 2019 has been derived from the audited financial statements at that date but does not include all of the information and footnotes required by U.S. generally accepted accounting principles for complete financial statements.