Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash flows from operating activities:
Net loss	$ (513,512)	$ (561,899)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization expense	46,596	46,921
Stock-based compensation expense	186,379	135,160
Deferred income taxes	7,793	0
Impairment of property and equipment	23	978
Other non-cash items, net	(2,899)	7
Changes in operating assets and liabilities:
Accounts receivable, net	(88,735)	(7,315)
Inventories	(16,127)	(4,901)
Prepaid expenses and other assets	(23,737)	(19,110)
Accounts payable	6,283	(5,544)
Accrued expenses and other liabilities	90,320	12,210
Accrued restructuring expense	(28,051)	27,249
Deferred revenues	(13,751)	(15,085)
Net cash used in operating activities	(349,418)	(391,329)
Cash flows from investing activities:
Purchases of marketable securities	(292,135)	(1,066,772)
Maturities of marketable securities	804,588	1,203,400
Payment for acquisition of variable interest entity	(80,000)	0
Expenditures for property and equipment	(32,775)	(36,525)
(Increase) decrease in restricted cash and cash equivalents	(21,980)	9
Decrease in restricted cash and cash equivalents (VIE)	14,830	0
Decrease (increase) in other assets	(982)	(92)
Net cash provided by investing activities	391,546	100,020
Cash flows from financing activities:
Issuances of common stock under benefit plans	139,689	201,274
Payments on capital lease obligations	(16,515)	(17,215)
Proceeds from capital lease financing	13,386	0
Payments on Fan Pier lease obligation	(45,438)	(45,438)
Proceeds from senior secured term loan	0	294,383
Payments returned related to Fan Pier lease obligation	0	8,050
Net cash provided by financing activities	91,122	441,054
Effect of changes in exchange rates on cash	(2,259)	(481)
Net increase in cash and cash equivalents	130,991	149,264
Cash and cash equivalents—beginning of period	625,259	569,299
Cash and cash equivalents—end of period	756,250	718,563
Supplemental disclosure of cash flow information:
Cash paid for interest	19,074	2,817
Cash paid for income taxes	1,261	798
Capitalization of costs related to Fan Pier lease obligation	0	25,564
Assets acquired under capital lease	0	8,985
Issuances of common stock exercises from employee benefit plans receivable	$ (236)	$ 23,035