Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities:
Net loss	$ (742,745)us-gaap_ProfitLoss	$ (687,550)us-gaap_ProfitLoss	$ (51,135)us-gaap_ProfitLoss
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Depreciation and amortization expense	63,257	48,365	38,191
Stock-based compensation expense	177,542us-gaap_ShareBasedCompensation	127,303us-gaap_ShareBasedCompensation	114,285us-gaap_ShareBasedCompensation
Other non-cash based compensation expense	0us-gaap_OtherNoncashExpense	5,860us-gaap_OtherNoncashExpense	10,261us-gaap_OtherNoncashExpense
Intangible asset impairment charges	0	663,500	0
Deferred income taxes	281	(285,053)	36,660
Impairment of property and equipment	1,689us-gaap_AssetImpairmentCharges	7,594us-gaap_AssetImpairmentCharges	0us-gaap_AssetImpairmentCharges
Deconsolidation of variable interest entity	0us-gaap_GainLossOnSaleOfInvestments	55,110us-gaap_GainLossOnSaleOfInvestments	0us-gaap_GainLossOnSaleOfInvestments
Write-downs of inventories to net realizable value	0us-gaap_InventoryWriteDown	10,358us-gaap_InventoryWriteDown	133,189us-gaap_InventoryWriteDown
Excess tax benefit from share-based payment arrangements	(2,160)	1,252	(1,971)
Other non-cash items, net	0us-gaap_OtherNoncashIncomeExpense	6,742us-gaap_OtherNoncashIncomeExpense	178us-gaap_OtherNoncashIncomeExpense
Changes in operating assets and liabilities, excluding the effects of the acquisition and deconsolidation of variable interest entities:
Accounts receivable, net	7,428	53,363	39,912
Inventories	(16,469)us-gaap_IncreaseDecreaseInInventories	7,142us-gaap_IncreaseDecreaseInInventories	(29,925)us-gaap_IncreaseDecreaseInInventories
Prepaid expenses and other assets	(15,771)	(12,061)	(23,619)
Accounts payable	25,048	(49,234)	14,892
Accrued expenses and other liabilities	(3,270)	43,725	29,232
Accrued restructuring expense	17,502	5,025	(2,985)
Deferred revenues	(25,531)	(53,011)	(39,324)
Net cash (used in) provided by operating activities	(513,199)	(51,570)	267,841
Cash flows from investing activities:
Purchases of marketable securities	(1,424,172)	(2,412,418)	(1,705,829)
Sales and maturities of marketable securities	1,557,938	2,348,295	1,367,927
Payment for acquisition of variable interest entity	(10,000)	0	0
Expenditures for property and equipment	(51,201)	(51,393)	(71,140)
Decrease in restricted cash and cash equivalents	0	31,804	2,156
Decrease (increase) in restricted cash and cash equivalents (VIE)	1,638	27,884	(18,105)
(Increase) decrease in other assets	(244)	1,698	(826)
Net cash provided by (used in) investing activities	73,959	(54,130)	(425,817)
Cash flows from financing activities:
Excess tax benefit from share-based payment arrangements	2,160	(1,252)	1,971
Issuances of common stock under benefit plans	274,615	265,878	191,721
Payments to redeem secured notes	0us-gaap_RepaymentsOfDebt	(158)us-gaap_RepaymentsOfDebt	0us-gaap_RepaymentsOfDebt
Payments on capital lease obligations	(21,443)	(16,057)	(2,615)
Payments on construction financing lease obligation	(60,249)	(67,527)	(18,873)
Proceeds from senior secured term loan	294,243	0	0
Payments returned related to construction financing lease obligation	8,050us-gaap_PaymentsOfFinancingCosts	0us-gaap_PaymentsOfFinancingCosts	0us-gaap_PaymentsOfFinancingCosts
Net cash provided by financing activities	497,376	180,884	172,204
Effect of changes in exchange rates on cash	(2,176)	4,708	(141)
Net increase in cash and cash equivalents	55,960	79,892	14,087
Cash and cash equivalents—beginning of period	569,299	489,407	475,320
Cash and cash equivalents—end of period	625,259	569,299	489,407
Supplemental disclosure of cash flow information:
Cash paid for interest	8,714us-gaap_InterestPaid	11,015us-gaap_InterestPaid	13,400us-gaap_InterestPaid
Cash paid for income taxes	1,210us-gaap_IncomeTaxesPaidNet	2,840us-gaap_IncomeTaxesPaidNet	9,318us-gaap_IncomeTaxesPaidNet
Conversion of convertible senior subordinated notes (due 2015) for common stock	0	399,842	0
Unamortized deferred debt issuance costs exchanged	0	4,230	0
Capitalization of construction in-process related to construction financing lease obligation	25,564	215,013	235,594
Assets acquired under capital lease obligations	9,188us-gaap_CapitalLeaseObligationsIncurred	50,972us-gaap_CapitalLeaseObligationsIncurred	31,101us-gaap_CapitalLeaseObligationsIncurred
Issuances of common stock exercises from employee benefit plans receivable	$ 637us-gaap_ConversionOfStockAmountIssued1	$ 0us-gaap_ConversionOfStockAmountIssued1	$ 0us-gaap_ConversionOfStockAmountIssued1

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The net cash outflow or inflow from other investing activities. This element is used when there is not a more specific and appropriate element in the taxonomy.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 8

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 9

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3098-108585

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- Definition

The cash outflow for loan and debt issuance costs.

+ References

+ Details

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- Definition

The cash outflow to acquire debt and equity securities not classified as either held-to-maturity securities or trading securities which would be classified as available-for-sale securities and reported at fair value, with unrealized gains and losses excluded from earnings and reported in a separate component of shareholders' equity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 45

-Paragraph 11

-URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26853-111562

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (a),(b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585

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- Definition

The cash outflow to acquire asset without physical form usually arising from contractual or other legal rights, excluding goodwill.

+ References

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- Definition

The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

+ References

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- Definition

The total cash inflow associated with the amount received from holders to acquire the entity's shares under incentive and share awards, including stock option exercises. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

+ References

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- Definition

The net cash inflow or outflow from other financing activities. This element is used when there is not a more specific and appropriate element in the taxonomy.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

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-Publisher FASB

-Name Accounting Standards Codification

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-Section 45

-Paragraph 9

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- Definition

Amount of cash inflow (outflow) from long-term debt wholly or partially secured by collateral. Excludes tax exempt secured debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

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- Definition

The cash inflow associated with the sale or maturity (principal being due) of securities not classified as either held-to-maturity securities or trading securities which are classified as available-for-sale securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

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-SubTopic 10

-Section 45

-Paragraph 12

-Subparagraph (a),(b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585

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- Definition

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

-SubTopic 10

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-Paragraph 4K

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

-SubTopic 10

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-Paragraph 19

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-Name Accounting Standards Codification

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-Topic 810

-SubTopic 10

-Section 55

-Paragraph 4J

-URI http://asc.fasb.org/extlink&oid=35736750&loc=SL4591551-111686

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- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

+ References

No definition available.

+ Details

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- Definition

The cash outflow for the obligation for a lease meeting the criteria for capitalization (with maturities exceeding one year or beyond the operating cycle of the entity, if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585

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- Definition

Net total Increase or Decrease in the accrual for restructuring costs during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SAB TOPIC 5.P.4(b))

-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section P

-Subsection 3, 4

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- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ References

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- Definition

Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

+ References

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- Definition

The value of the financial instrument(s) that the original debt is being converted or exchanged into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

No definition available.

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- Definition

Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill), Including Effect of Discontinued Operations

+ References

No definition available.

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