Stockholders' Equity - Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018
Summary of accumulated other comprehensive income/(loss) [Line Items]
Total accumulated other comprehensive income (loss)	$ 16,961,102	$ 16,936,527	$ 17,066,337	$ 16,506,627	$ 16,225,729	$ 15,969,572	$ 16,047,831	$ 15,586,599
Foreign currency translation
Summary of accumulated other comprehensive income/(loss) [Line Items]
Total accumulated other comprehensive income (loss)	(820,555)			(719,814)
Derivative and financial instruments designated as hedges
Summary of accumulated other comprehensive income/(loss) [Line Items]
Total accumulated other comprehensive income (loss)	694,086			607,657
Total accumulated other comprehensive income (loss)
Summary of accumulated other comprehensive income/(loss) [Line Items]
Total accumulated other comprehensive income (loss)	$ (126,469)	$ (116,856)	$ (96,213)	$ (112,157)	$ (117,676)	$ (100,622)	$ (144,618)	$ (129,769)