Income Taxes - Effective Income Tax Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income before provision for (benefit from) income taxes	$ 888,623	$ 745,871	$ 824,770	$ 657,534	$ 676,950	$ 70,666	$ 327,138	$ 320,165	$ 3,116,798	$ 1,394,919	$ 600,241
Expected provision for income taxes									654,528	292,933	126,051
State taxes, net of federal benefit									18,596	8,478	8,680
Foreign income tax rate differential									5,433	6,178	23,427
Tax credits									(55,824)	(59,459)	(52,629)
Benefit from income taxes attributable to valuation allowances									17,384	(2,672)	(1,563,169)
Tax rate change									(37,688)	0	0
Stock compensation (benefit), shortfalls and cancellations									(70,628)	(56,324)	(49,044)
Officer’s compensation									13,079	10,666	8,310
Long-term intercompany receivable write-off									(53,821)	0	0
Deconsolidation of VIE									0	0	(9,390)
Uncertain tax positions									39,808	14,070	15,431
Inter-entity transfer of intellectual property rights									(209,000)	0	0
U.S. deemed dividend									71,727	79	64
Other									11,557	4,160	5,407
Provision for (benefit from) income taxes	$ 284,433	$ 78,437	$ (12,500)	$ 54,781	$ 93,716	$ 13,148	$ 59,711	$ 51,534	$ 405,151	$ 218,109	$ (1,486,862)