Stock-based Compensation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			9 Months Ended		12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred tax assets (noncurrent)	$ 346,243	$ 269,237		$ 346,243		$ 269,237
Total assets	5,182,915	3,837,672		5,182,915		3,837,672
Additional paid-in-capital	2,880,109	2,450,782		2,880,109		2,450,782
Retained earnings	697,706	216,644		697,706		216,644
Total stockholders' equity	3,296,867	2,550,251		3,296,867		2,550,251
Total liabilities and stockholders' equity	5,182,915	3,837,672		5,182,915		3,837,672
Selling, general, and administrative	209,993	175,307	$ 144,003	543,572	$ 343,960	519,267
Total operating expenses	745,000	586,526	537,324	1,984,817	1,409,112	1,995,638
Income from operations	392,422	215,803	188,464	1,020,834	608,116	823,919
Income before income taxes	393,289	189,723	181,823	997,808	571,512	761,235
Income tax expense	182,891	99,628	98,448	516,746	323,481	423,109
Net Income (Loss) Attributable to Parent	$ 210,398	$ 90,095	$ 83,375	$ 481,062	$ 248,031	$ 338,126
Net income per share - basic	$ 2.04	$ 0.89	$ 0.83	$ 4.68	$ 2.47	$ 3.36
Net income per share - diluted	$ 1.82	$ 0.78	$ 0.73	$ 4.18	$ 2.19	$ 2.98
Non-cash compensation expense	$ 102,600		$ 68,100	$ 300,657	$ 208,732
Deferred taxes					(43,547)
Previously Reported
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred tax assets (noncurrent)		$ 266,869				$ 266,869
Total assets		3,871,827				3,871,827
Additional paid-in-capital		2,404,118				2,404,118
Retained earnings		255,382				255,382
Total stockholders' equity		2,542,325				2,542,325
Total liabilities and stockholders' equity		3,871,827				3,871,827
Selling, general, and administrative		143,743	149,748		361,012	504,755
Total operating expenses		554,962	543,069		1,426,164	1,981,126
Income from operations		247,367	182,719		591,064	838,431
Income before income taxes		221,287	176,078		554,460	775,747
Income tax expense		111,111	96,358		316,562	427,673
Net Income (Loss) Attributable to Parent		$ 110,176	$ 79,720		$ 237,898	$ 348,074
Net income per share - basic		$ 1.09	$ 0.79		$ 2.37	$ 3.46
Net income per share - diluted		$ 0.96	$ 0.70		$ 2.10	$ 3.07
Non-cash compensation expense					$ 225,784
Deferred taxes					(50,466)
Revision Adjustment
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred tax assets (noncurrent)		$ 22,152				$ 22,152
Total assets		22,152				22,152
Additional paid-in-capital		60,890				60,890
Retained earnings		(38,738)				(38,738)
Total stockholders' equity		22,152				22,152
Total liabilities and stockholders' equity		22,152				22,152
Selling, general, and administrative		31,564	$ (5,745)		(17,052)	14,512
Total operating expenses		31,564	(5,745)		(17,052)	14,512
Income from operations		(31,564)	5,745		17,052	(14,512)
Income before income taxes		(31,564)	5,745		17,052	(14,512)
Income tax expense		(11,483)	2,090		6,919	(4,564)
Net Income (Loss) Attributable to Parent		$ (20,081)	$ 3,655		$ 10,133	$ (9,948)
Net income per share - basic		$ (0.20)	$ 0.04		$ 0.10	$ (0.10)
Net income per share - diluted		$ (0.18)	$ 0.03		$ 0.09	$ (0.09)
Non-cash compensation expense					$ (17,052)
Deferred taxes					$ 6,919
Revised
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred tax assets (noncurrent)		$ 289,021				$ 289,021
Total assets		3,893,979				3,893,979
Additional paid-in-capital		2,465,008				2,465,008
Retained earnings		216,644				216,644
Total stockholders' equity		2,564,477				2,564,477
Total liabilities and stockholders' equity		$ 3,893,979				$ 3,893,979