Income Taxes - Components of Income and Provision for (Benefit from) Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Components of income (loss) before provision for (benefit from) income taxes
United States									$ 1,263,379	$ 812,086	$ 330,340
Foreign									131,540	(211,845)	(346,029)
Income (loss) before provision for (benefit from) income taxes	$ 676,950	$ 70,666	$ 327,138	$ 320,165	$ 32,497	$ 136,511	$ 216,591	$ 214,642	1,394,919	600,241	(15,689)
Current taxes:
Federal									0	772	11,559
Foreign									37,194	15,600	3,576
State									13,528	9,018	5,025
Total current taxes									50,722	25,390	20,160
Deferred taxes:
Federal									184,312	(1,105,053)	(113,805)
Foreign									(24,797)	(364,919)	(3,222)
State									7,872	(42,280)	(10,457)
Total deferred taxes									167,387	(1,512,252)	(127,484)
Provision for (benefit from) income taxes	$ 93,716	$ 13,148	$ 59,711	$ 51,534	$ (1,492,599)	$ 8,055	$ 10,341	$ (12,659)	$ 218,109	$ (1,486,862)	$ (107,324)