Quarterly Results of Operations - Schedule of Selected Quarterly Results of Operations (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Quarterly Financial Data [Abstract]
Total revenues	$ 1,214,379	$ 936,789	$ 954,976	$ 939,880	$ 956,661	$ 851,804	$ 769,349	$ 620,542	$ 4,046,025	$ 3,198,356	$ 2,013,496
Gross profit	218,564	231,496	213,370	260,073	261,697	251,851	212,995	155,128	923,503	881,671	456,262
Net loss	$ (320,397)	$ (229,858)	$ (184,227)	$ (154,181)	$ (107,630)	$ (74,708)	$ (61,900)	$ (49,800)	$ (888,663)	$ (294,040)	$ (74,014)
Net loss per share, basic	$ (2.44)	$ (1.78)	$ (1.45)	$ (1.22)	$ (0.86)	$ (0.60)	$ (0.50)	$ (0.40)
Net income (loss) per share, diluted	$ (2.44)	$ (1.78)	$ (1.45)	$ (1.22)	$ (0.86)	$ (0.60)	$ (0.50)	$ (0.40)