Income Taxes - Summary of Provision for Income Taxes and U.S. Federal Tax Rate (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount [Abstract]
Computed “expected” tax expense	$ 36,182	$ 48,141
Foreign income tax differential	(8,112)	(4,692)
Excess tax benefit related to stock-based compensation	(17,098)	(6,385)
State taxes net of federal benefits	774	3,550
Foreign-sourced nontaxable income	14	(56)
Foreign withholding	4,585	5,275
GILTI, net of foreign tax credits	2,426	2,433
Change in valuation allowance and remeasurement of related deferred tax asset	7,651	3,289
Other	(1,183)	5,579
Provision for income taxes	$ 25,239	$ 57,134
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Computed “expected” tax expense	21.00%	21.00%
Foreign income tax differential	(4.70%)	(2.00%)
Excess tax benefit related to stock-based compensation	(9.90%)	(2.80%)
State taxes net of federal benefits	0.40%	1.50%
Foreign-sourced nontaxable income	0.00%	0.00%
Foreign withholding	2.70%	2.30%
GILTI, net of foreign tax credits	1.40%	1.10%
Change in valuation allowance and remeasurement of related deferred tax asset	4.40%	1.40%
Other	(0.70%)	2.40%
Provision for income taxes	14.60%	24.90%