Income Taxes - Components of Income and Provision for (Benefit from) Income Taxes (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
Components of income (loss) before provision for (benefit from) income taxes
United States									$ 2,885,423	$ 1,263,379	$ 812,086
Foreign									231,375	131,540	(211,845)
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
Current taxes:
Federal									71,377	0	772
Foreign									37,582	37,194	15,600
State									18,851	13,528	9,018
Total current taxes									127,810	50,722	25,390
Deferred taxes:
Federal									510,220	184,312	(1,105,053)
Foreign									(239,579)	(24,797)	(364,919)
State									6,700	7,872	(42,280)
Total deferred taxes			(209,000)						277,341	167,387	(1,512,252)
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)