Income Taxes - Summary of Provision for Income Taxes and U.S. Federal Tax Rate (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount [Abstract]
Computed “expected” tax expense	$ 44,443	$ 54,025
Foreign income tax differential	(4,155)	(3,185)
Excess tax benefit related to stock-based compensation	(12,720)	(8,097)
State taxes net of federal benefits	3,902	2,982
Foreign-sourced nontaxable income	13	145
Foreign withholding	3,515	5,098
GILTI, net of foreign tax credits	2,402	3,284
Change in valuation allowance and remeasurement of related deferred tax asset	0	(64,880)
Change in taxes for federal uncertain tax positions	12,261	155
Other	3,479	6,082
Provision for (benefit from) income taxes	$ 53,140	$ (4,391)	$ 78,379	$ 52,743
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Computed “expected” tax expense	21.00%	21.00%
Foreign income tax differential	(2.00%)	(1.20%)
Excess tax benefit related to stock-based compensation	(6.00%)	(3.20%)
State taxes net of federal benefits	1.80%	1.20%
Foreign-sourced nontaxable income	0.00%	0.10%
Foreign withholding	1.70%	1.90%
GILTI, net of foreign tax credits	1.10%	1.30%
Change in valuation allowance and remeasurement of related deferred tax asset	0.00%	(25.20%)
Change in taxes for federal uncertain tax positions	5.80%	0.10%
Other	1.70%	2.30%
Provision for (benefit from) income taxes	25.10%	(1.70%)