VeriSign (VRSN) 10-Q 23 Oct 14 2014 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information Document	9 Months Ended
	Sep. 30, 2014	Oct. 17, 2014
Document And Entity Information [Abstract]	'	'
Entity Registrant Name	'VERISIGN INC/CA	'
Entity Central Index Key	'0001014473	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Large Accelerated Filer	'
Document Type	'10-Q	'
Document Period End Date	30-Sep-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q3	'
Amendment Flag	'false	'
Entity Common Stock, Shares Outstanding	'	121,090,105

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$233,949	$339,223
Marketable securities	1,240,769	1,384,062
Accounts receivable, net	16,081	13,631
Other Assets, Current	32,188	66,283
Total current assets	1,522,987	1,803,199
Property and equipment, net	318,808	339,653
Goodwill	52,527	52,527
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent	286,429	437,643
Other long-term assets	26,671	27,745
Total long-term assets	684,435	857,568
Total assets	2,207,422	2,660,767
Current liabilities:	'	'
Accounts payable and accrued liabilities	133,542	149,276
Deferred revenues	625,007	595,221
Convertible Debentures, including contingent interest derivative	627,068	624,056
Deferred Tax Liabilities, Net, Current	463,649	660,633
Total current liabilities	1,849,266	2,029,186
Long-term deferred revenues	268,066	260,615
Senior Notes	750,000	750,000
Other long-term liabilities	88,844	44,524
Total long-term liabilities	1,106,910	1,055,139
Total liabilities	2,956,176	3,084,325
Commitments and contingencies	'	'
Stockholders' deficit:	'	'
Preferred stock-par value $.001 per share; Authorized shares: 5,000; Issued and outstanding shares: none	0	0
Common stock-par value $.001 per share; Authorized shares: 1,000,000; Issued shares: 321,608 at September 30, 2014 and 320,358 at December 31, 2013; Outstanding shares: 122,026 at September 30, 2014 and 133,724 at December 31, 2013	322	320
Additional paid-in capital	18,320,280	18,935,302
Accumulated deficit	-19,066,307	-19,356,095
Accumulated other comprehensive loss	-3,049	-3,085
Total stockholders' deficit	-748,754	-423,558
Total liabilities and stockholders' deficit	$2,207,422	$2,660,767

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, except Per Share data, unless otherwise specified
Statement of Financial Position [Abstract]	'	'
Preferred stock, par value	$0.00	$0.00
Preferred stock, authorized shares	5,000	5,000
Preferred stock, issued shares	0	0
Preferred stock, outstanding shares	0	0
Common stock, par value	$0.00	$0.00
Common stock, authorized shares	1,000,000	1,000,000
Common Stock, Shares, Issued	321,608	320,358
Common stock, outstanding shares	122,026	133,724

Condensed_Consolidated_Stateme

Condensed Consolidated Statements Of Comprehensive Income (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Statement [Abstract]	'	'	'	'
Revenues	$255,022	$243,678	$754,200	$719,457
Costs and expenses:	'	'	'	'
Cost of revenues	46,933	46,554	140,948	140,438
Sales and marketing	24,304	22,900	68,244	64,273
Research and development	16,320	17,456	50,453	52,531
General and administrative	27,965	24,055	72,349	64,157
Total costs and expenses	115,522	110,965	331,994	321,399
Operating income	139,500	132,713	422,206	398,058
Interest expense	-21,533	-21,119	-64,408	-53,524
Non-operating income (loss), net	-6,473	-4,592	5,037	-4,208
Income before income taxes	111,494	107,002	362,835	340,326
Income tax expense	-16,305	-26,104	-73,047	-88,025
Net Income	95,189	80,898	289,788	252,301
Change in unrealized gain on investments, net of tax	59	85	34	-341
Realized gain on investments, net of tax, included in net income	-1	1	2	-2,478
Other comprehensive income (loss)	58	86	36	-2,819
Comprehensive Income	$95,247	$80,984	$289,824	$249,482
Basic income (loss) per share	'	'	'	'
Continuing operations	$0.77	$0.57	$2.25	$1.71
Diluted income (loss) per share	'	'	'	'
Continuing operations	$0.69	$0.53	$2.03	$1.60
Shares used to compute net income per share	'	'	'	'
Basic	124,109	141,701	128,924	147,567
Diluted	138,112	152,951	142,584	157,606

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements Of Cash Flows (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities:	'	'
Net income	$289,788	$252,301
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation of property and equipment and amortization of other intangible assets	47,924	45,415
Stock-based compensation	34,281	27,006
Excess tax benefit associated with stock-based compensation	-8,566	-30,095
Deferred Income Taxes	-1,331	29,000
Unrealized Gain (Loss) on Derivatives	-3,953	9,723
Other, net	8,837	7,854
Changes in operating assets and liabilities	'	'
Accounts receivable	-2,550	-3,525
Prepaid expenses and other assets	31,349	1,679
Accounts payable and accrued liabilities	-2,540	47,185
Deferred revenues	37,237	45,414
Net cash provided by operating activities	430,476	431,957
Cash flows from investing activities:	'	'
Proceeds from maturities and sales of marketable securities	2,425,259	2,253,776
Purchases of marketable securities	-2,281,523	-2,516,714
Purchases of property and equipment	-30,058	-50,201
Other investing activities	351	-3,946
Net cash used in investing activities	114,029	-317,085
Cash flows from financing activities:	'	'
Proceeds from issuance of common stock from option exercises and employee stock purchase plans	15,816	16,661
Repurchases of common stock	-673,540	-810,067
Repayments of Long-term Lines of Credit	0	-100,000
Proceeds from Issuance of Senior Long-term Debt	0	738,297
Excess tax benefit associated with stock-based compensation	8,566	30,095
Net cash used in financing activities	-649,158	-125,014
Effect of exchange rate changes on cash and cash equivalents	-621	-3,003
Net decrease in cash and cash equivalents	-105,274	-13,145
Cash and cash equivalents at beginning of period	339,223	130,736
Cash and cash equivalents at end of period	233,949	117,591
Supplemental cash flow disclosures:	'	'
Cash paid for interest, net of capitalized interest	57,767	40,435
Cash paid for income taxes, net of refunds received	$34,937	$17,055

Basis_Of_Presentation

Basis Of Presentation	9 Months Ended
	Sep. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Basis Of Presentation	'
	Basis of Presentation
	Interim Financial Statements
	The accompanying unaudited Condensed Consolidated Financial Statements have been prepared by VeriSign, Inc. (“Verisign” or the “Company”) in accordance with the instructions to Form 10-Q pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”) and, therefore, do not include all information and notes normally provided in audited financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals and other adjustments) considered necessary for a fair presentation have been included. The results of operations for any interim period are not necessarily indicative of, nor comparable to, the results of operations for any other interim period or for a full fiscal year. These unaudited Condensed Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements and related notes contained in Verisign’s fiscal 2013 Annual Report on Form 10-K (the “2013 Form 10-K”) filed with the SEC on February 21, 2014.
	Reclassifications
	Certain reclassifications have been made to prior period amounts to conform to current period presentation. Such reclassifications have no effect on net income as previously reported.
	Recent Accounting Pronouncements
	On May 28, 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers, which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The ASU will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective. The new standard will become effective for the Company on January 1, 2017. Early application is not permitted. The standard permits the use of either the retrospective or cumulative effect transition method. The Company is evaluating the effect that ASU 2014-09 will have on its consolidated financial statements and related disclosures. The Company has not yet selected a transition method nor has it determined the effect of the standard on its ongoing financial reporting.

Cash_Cash_Equivalents_And_Mark

Cash, Cash Equivalents, And Marketable Securities	9 Months Ended
	Sep. 30, 2014
Cash, Cash Equivalents And Marketable Securities [Abstract]	'
Cash, Cash Equivalents, And Marketable Securities	'
	Cash, Cash Equivalents, and Marketable Securities
	The following table summarizes the Company’s cash, cash equivalents, and marketable securities:
		September 30,		December 31,
		2014		2013
		(In thousands)
	Cash	$	68,413	$	72,232
	Money market funds	161,942		246,492
	Time deposits	3,522		3,978
	Debt securities issued by the U.S. Treasury	1,248,969		1,409,062
	Total	$	1,482,846	$	1,731,764
	Included in Cash and cash equivalents	$	233,949	$	339,223
	Included in Marketable securities	$	1,240,769	$	1,384,062
	Included in Other long-term assets (Restricted cash)	$	8,128	$	8,479
	The fair value of the debt securities held as of September 30, 2014 was $1.2 billion, including less than $0.1 million of gross and net unrealized losses. All of the debt securities held as of September 30, 2014 are scheduled to mature in less than one year.

Fair_Value_Of_Financial_Instru

Fair Value Of Financial Instruments	9 Months Ended
	Sep. 30, 2014
Fair Value Disclosures [Abstract]	'
Fair Value Of Financial Instruments	'
	Fair Value of Financial Instruments
	Assets and Liabilities Measured at Fair Value on a Recurring Basis
	The following table summarizes the Company’s financial assets and liabilities measured at fair value on a recurring basis as of September 30, 2014 and December 31, 2013:
				Fair Value Measurement Using
		Total Fair Value		(Level 1)		(Level 2)			(Level 3)
		(In thousands)
	As of September 30, 2014:
	Assets:
	Investments in money market funds	$	161,942	$	161,942	$	—		$	—
	Debt securities issued by the U.S. Treasury	1,248,969		1,248,969		—			—
	Foreign currency forward contracts (1)	229		—		229			—
	Total	$	1,411,140	$	1,410,911	$	229		$	—
	Liabilities:
	Contingent interest derivative on the Subordinated Convertible Debentures	$	25,051	$	—	$	—		$	25,051
	Foreign currency forward contracts (2)	333		—		333			—
	Total	$	25,384	$	—	$	333		$	25,051
	As of December 31, 2013:
	Assets:
	Investments in money market funds	$	246,492	$	246,492	$	—		$	—
	Debt securities issued by the U.S. Treasury	1,409,062		1,409,062		—			—
	Foreign currency forward contracts (1)	141		—		141			—
	Total	$	1,655,695	$	1,655,554	$	141		$	—
	Liabilities:
	Contingent interest derivative on the Subordinated Convertible Debentures	$	29,004	$	—	$	—		$	29,004
	Foreign currency forward contracts (2)	131		—		131			—
	Total	$	29,135	$	—	$	131		$	29,004
	-1	Included in Income taxes receivable and other current assets
	-2	Included in Accounts payable and accrued liabilities
	The fair value of the Company’s investments in money market funds approximates their face value. Such instruments are classified as Level 1 and are included in Cash and cash equivalents.
	The fair value of the debt securities consisting of U.S. Treasury bills is based on their quoted market prices and are classified as Level 1. Debt securities purchased with original maturities in excess of three months are included in Marketable securities.
	The fair value of the Company’s foreign currency forward contracts is based on foreign currency rates quoted by banks or foreign currency dealers and other public data sources.
	The Company utilizes a valuation model to estimate the fair value of the contingent interest derivative on the subordinated convertible debentures due 2037 (“the Subordinated Convertible Debentures”). The inputs to the model include stock price, bond price, risk free interest rates, volatility, and credit spread observations. As several significant inputs are not observable, the overall fair value measurement of the derivative is classified as Level 3. The volatility and credit spread assumptions used in the calculation are the most significant unobservable inputs. As of September 30, 2014, the valuation of the contingent interest derivative assumed a volatility rate of approximately 32%. A hypothetical 5% increase or decrease in the volatility rate would not significantly change the fair value of the contingent interest derivative. The credit spread assumed in the valuation was approximately 4% at September 30, 2014. A hypothetical 1% increase or decrease in the credit spread would not significantly change the fair value of the contingent interest derivative.
	The following table summarizes the change in the fair value of the Company’s contingent interest derivative on the Subordinated Convertible Debentures during the three and nine months ended September 30, 2014 and 2013:
		Three Months Ended September 30,				Nine Months Ended September 30,
		2014		2013		2014			2013
		(In thousands)
	Beginning balance	$	18,489	$	15,640	$	29,004		$	11,203
	Unrealized loss (gain)	6,562		5,286		(3,953		)	9,723
	Ending balance	$	25,051	$	20,926	$	25,051		$	20,926
	On August 14, 2014, the upside trigger on the Subordinated Convertible Debentures was met for the six month interest period from August 15, 2014 through February 14, 2015. On February 15, 2015, the Company will pay contingent interest of $5.2 million in addition to the normal coupon interest to holders of record of the Subordinated Convertible Debentures as of February 1, 2015. The value of the contingent interest payable in February 2015 is included in the balance of the contingent interest derivative on the Subordinated Convertible Debentures as of September 30, 2014.
	Other
	The Company’s other financial instruments include cash, accounts receivable, restricted cash, and accounts payable. As of September 30, 2014, the carrying value of these financial instruments approximated their fair value. The fair values of the Company’s Subordinated Convertible Debentures and the senior notes due 2023 (the “Senior Notes”) as of September 30, 2014, are $2.1 billion and $742.5 million, respectively, and are based on available market information from public data sources. These fair value measurements are classified as Level 2.

Other_Balance_Sheet_Items

Other Balance Sheet Items	9 Months Ended
	Sep. 30, 2014
Balance Sheet Related Disclosures [Abstract]	'
Other Balance Sheet Items	'
	Other Balance Sheet Items
	Income Taxes Receivable and Other Current Assets
	Income taxes receivable and other current assets consist of the following:
		September 30,		December 31,
		2014		2013
		(In thousands)
	Income tax and other receivables	$	8,033	$	39,884
	Prepaid expenses	12,789		13,502
	Debt issuance costs	10,605		10,705
	Deferred tax assets	257		1,743
	Other	504		449
	Total income taxes receivable and other current assets	$	32,188	$	66,283
	Income tax and other receivables primarily relates to a federal income tax receivable recognized during the fourth quarter of 2013 in connection with a worthless stock deduction for the Company’s 2013 federal income tax return as discussed in Note 13, “Income Taxes,” of our 2013 Form 10-K.
	Accounts Payable and Accrued Liabilities
	Accounts payable and accrued liabilities consist of the following:
		September 30,		December 31,
		2014		2013
		(In thousands)
	Accounts payable	$	21,314	$	24,843
	Accrued employee compensation	39,029		49,974
	Customer deposits	26,287		20,869
	Income taxes payable and other tax liabilities	18,064		19,853
	Other accrued liabilities	28,848		33,737
	Total accounts payable and accrued liabilities	$	133,542	$	149,276
	Accrued employee compensation primarily consists of liabilities for employee leave, salaries, payroll taxes, employee contributions to the employee stock purchase plan, and incentive compensation. Accrued employee incentive compensation as of December 31, 2013, was paid during the nine months ended September 30, 2014. Other accrued liabilities include miscellaneous vendor payables, coupon interest on the Subordinated Convertible Debentures which is paid semi-annually in arrears on August 15 and February 15, and interest on the Senior Notes which is paid semi-annually in arrears on May 1 and November 1.

Stockholders_Deficit

Stockholders' Deficit	9 Months Ended
	Sep. 30, 2014
Stockholders' Equity Note [Abstract]	'
Stockholders' (Deficit) Equity	'
	Stockholders’ Deficit
	On July 23, 2014, the Board of Directors approved an additional authorization for share repurchases of approximately $490.6 million of common stock in addition to the $509.4 million remaining available for repurchases of common stock under the previous share buyback program for a total repurchase authorization of up to $1.0 billion of its common stock. The share buyback program has no expiration date. Purchases made under the program could be effected through open market transactions, block purchases, accelerated share repurchase agreements or other negotiated transactions. During the three and nine months ended September 30, 2014 the Company repurchased 4.2 million and 12.7 million shares of its common stock, respectively, at an average stock price of $53.99 and $51.96, respectively. The aggregate cost of the repurchases in the three and nine months ended September 30, 2014 was $226.3 million and $657.9 million, respectively. As of September 30, 2014, $832.7 million remained available for further repurchases under the share buyback program.
	During the nine months ended September 30, 2014, the Company placed 0.3 million shares, at an average stock price of $54.64 and for an aggregate cost of $15.6 million, into treasury stock for purposes related to tax withholding upon vesting of Restricted Stock Units (“RSUs”).
	Since inception the Company has repurchased 199.6 million shares of its common stock for an aggregate cost of $6.6 billion, which is presented as a reduction of Additional paid-in capital.

Calculation_Of_Net_Income_Per_

Calculation Of Net Income Per Share	9 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Calculation Of Net Income Per Share Attributable To Verisign Stockholders	'
	Calculation of Net Income per Share
	The Company computes basic net income per share by dividing net income by the weighted-average number of common shares outstanding during the period. Diluted net income per share gives effect to dilutive potential common shares, including the conversion spread relating to the Subordinated Convertible Debentures, unvested RSUs, outstanding stock options, and employee stock purchases, using the treasury stock method. The following table presents the weighted-average number of shares used in the calculation of basic and diluted net income per share:
		Three Months Ended September 30,		Nine Months Ended September 30,
		2014	2013	2014	2013
		(In thousands)
	Weighted-average shares of common stock outstanding	124,109	141,701	128,924	147,567
	Weighted-average potential shares of common stock outstanding:
	Conversion spread related to the Subordinated Convertible Debentures	13,228	10,480	12,935	9,258
	Unvested RSUs	730	669	670	664
	Stock options	25	94	30	98
	Employee stock purchase plan	20	7	25	19
	Shares used to compute diluted net income per share	138,112	152,951	142,584	157,606
	The calculation of diluted weighted average shares outstanding, excludes potentially dilutive securities, the effect of which would have been anti-dilutive, as well as performance based RSUs granted by the Company for which the relevant performance criteria have not been achieved. The number of potential shares excluded from the calculation was not significant in any period presented.

StockBased_Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2014
Share-based Compensation [Abstract]	'
Stock-Based Compensation	'
	Stock-based Compensation
	Stock-based compensation is classified in the Condensed Consolidated Statements of Comprehensive Income in the same expense line items as cash compensation. The following table presents the classification of stock-based compensation:
		Three Months Ended September 30,						Nine Months Ended September 30,
		2014			2013			2014			2013
		(In thousands)
	Cost of revenues	$	1,618		$	1,524		$	4,748		$	4,639
	Sales and marketing	2,234			1,442			5,902			4,656
	Research and development	1,678			1,674			5,189			5,314
	General and administrative	9,386			5,937			18,442			12,397
	Total stock-based compensation expense	$	14,916		$	10,577		$	34,281		$	27,006
	The following table presents the nature of the Company’s total stock-based compensation:
		Three Months Ended September 30,						Nine Months Ended September 30,
		2014			2013			2014			2013
		(In thousands)
	RSUs	$	9,669		$	8,267		$	24,450		$	21,810
	Performance-based RSUs	4,897			1,935			8,795			3,082
	Employee stock purchase plan	1,046			1,130			3,124			4,262
	Stock options	—			—			—			180
	Capitalization (Included in Property and equipment, net)	(696		)	(755		)	(2,088		)	(2,328		)
	Total stock-based compensation expense	$	14,916		$	10,577		$	34,281		$	27,006

Interest_Expense

Interest Expense	9 Months Ended
	Sep. 30, 2014
Interest Expense [Abstract]	'
Interest Expense	'
	Interest Expense
	The following table presents the components of the Company’s interest expense:
		Three Months Ended September 30,						Nine Months Ended September 30,
		2014			2013			2014			2013
		(In thousands)
	Contractual interest on the Subordinated Convertible Debentures	$	10,156		$	10,156		$	30,469		$	30,469
	Contractual interest on Senior Notes	8,672			8,672			26,015			15,899
	Amortization of debt discount on the Subordinated Convertible Debentures	2,375			2,189			6,986			6,435
	Credit facility and amortization of debt issuance costs	497			443			1,482			1,623
	Interest capitalized to Property and equipment, net	(167		)	(341		)	(544		)	(902		)
	Total interest expense	$	21,533		$	21,119		$	64,408		$	53,524

Nonoperating_loss_income

Non-operating (loss) income	9 Months Ended
	Sep. 30, 2014
Non-operating (loss) income, net [Abstract]	'
Other Income and Other Expense Disclosure [Text Block]	'
	Non-operating (Loss) Income, Net
	The following table presents the components of Non-operating (loss) income, net:
		Three Months Ended September 30,						Nine Months Ended September 30,
		2014			2013			2014		2013
		(In thousands)
	Unrealized (loss) gain on contingent interest derivative on Subordinated Convertible Debentures	$	(6,562	)	$	(5,286	)	$	3,953	$	(9,723	)
	Interest income	197			320			708		1,583
	Other, net	(108		)	374			376		3,932
	Total non-operating (loss) income, net	$	(6,473	)	$	(4,592	)	$	5,037	$	(4,208	)
	Unrealized losses and gains on the contingent interest derivative on the Subordinated Convertible Debentures reflect the change in value of the derivative that results primarily from changes in the Company’s stock price. Interest income is earned principally from the Company’s surplus cash balances and marketable securities. Other, net in the nine months ended September 30, 2013 includes a $3.0 million gain on the sale of an investment in the equity securities of a public company.

Income_Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	Income Taxes
	The following table presents income tax expense and the effective tax rate:
		Three Months Ended September 30,						Nine Months Ended September 30,
		2014			2013			2014			2013
		(Dollars in thousands)
	Income tax expense	$	16,305		$	26,104		$	73,047		$	88,025
	Effective tax rate	15		%	24		%	20		%	26		%
	The effective tax rate for the three and nine months ended September 30, 2014 and 2013 is lower than the statutory federal rate of 35% primarily due to tax benefits from foreign income taxed at lower rates, partially offset by state income taxes and non-deductible stock-based compensation. The effective tax rate for the three and nine months ended September 30, 2014 was also reduced by discrete income tax benefits recognized as a result of changes in estimated income tax expenses relating to the repatriation of funds held by foreign subsidiaries.
	During the nine months ended September 30, 2014, the Company completed the previously disclosed repatriation of $740.9 million of cash held by foreign subsidiaries, net of $28.1 million of foreign withholding taxes which were accrued during 2013. The Company utilized the majority of the remaining deferred tax asset for net operating loss carryforwards generated from the 2013 worthless stock deduction to offset the income tax resulting from current year income and the repatriation. The repatriation generated foreign source income in the U.S. which allows the Company to claim eligible foreign taxes amounting to $191.4 million paid in the current year and prior years as foreign tax credits instead of as deductions. The benefit from these foreign tax credits was included in the computation of the deferred tax liability on unremitted foreign earnings as of December 31, 2013. The majority of these foreign tax credits will expire in 2024. The Company believes it is more likely than not that it will realize the benefit from these foreign tax credits before they expire, and accordingly has recognized a deferred tax asset as of September 30, 2014. The Company recognized a discrete tax benefit of $5.2 million in the second quarter of 2014 and an additional $11.4 million during the third quarter of 2014, as a result of changes in estimated income tax expenses related to the repatriation.
	In 2014, the Company adopted Accounting Standards Update (ASU) 2013-11, “Income Taxes - Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, Or a Tax Credit Carryforward Exists.” This ASU generally requires that unrecognized tax benefits be presented as a reduction to a deferred tax asset for a net operating loss, similar tax loss or a tax credit carryforward that is available to settle additional income taxes that would result from the disallowance of a tax position, presuming disallowance at the reporting date. As noted previously, the Company utilized a substantial portion of the remaining deferred tax asset for net operating loss carryforwards to offset the income tax resulting from current year income and the repatriation, and also recognized a deferred tax asset for foreign tax credits. As a result of the adoption of this ASU, and the utilization of the deferred tax asset for net operating loss carryforwards, partially offset by recognized deferred tax asset for foreign tax credits, approximately $22.2 million of unrecognized tax benefits, which had previously been offset against deferred tax assets, have been reclassified to Other long-term tax liabilities as of September 30, 2014.
	Long-term deferred tax assets as of September 30, 2014 reflects the recognition of deferred tax asset for foreign tax and alternative minimum tax credits, the effect of the re-allocation of valuation allowances between current and long-term deferred tax assets and the reclassification of unrecognized tax benefits. Current deferred tax liabilities as of September 30, 2014 reflects the release of the deferred tax liability related to unremitted foreign earnings, as actual tax liability was determined upon the completion of the repatriation, the use of deferred tax asset for net operating loss carryforwards, the recognition of deferred tax asset for foreign tax credits, the reclassification of unrecognized tax benefits, the effect of the re-allocation of valuation allowances between current and long-term deferred tax assets, and an increase in the deferred tax liability related to the Subordinated Convertible Debentures.

Contingencies

Contingencies	9 Months Ended
	Sep. 30, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Contingencies	'
	Contingencies
	Legal Proceedings
	Verisign is involved in various investigations, claims and lawsuits arising in the normal conduct of its business, none of which, in its opinion, will have a material adverse effect on its financial condition, results of operations, or cash flows. The Company cannot assure you that it will prevail in any litigation. Regardless of the outcome, any litigation may require the Company to incur significant litigation expense and may result in significant diversion of management attention.
	While certain legal proceedings and related indemnification obligations to which the Company is a party specify the amounts claimed, such claims may not represent reasonably possible losses. Given the inherent uncertainties of the litigation, the ultimate outcome of these matters cannot be predicted at this time, nor can the amount of possible loss or range of loss, if any, be reasonably estimated, except in circumstances where an aggregate litigation accrual has been recorded for probable and reasonably estimable loss contingencies. A determination of the amount of accrual required, if any, for these contingencies is made after careful analysis of each matter. The required accrual may change in the future due to new developments in each matter or changes in approach such as a change in settlement strategy in dealing with these matters. The Company does not believe that any such matter currently being reviewed will have a material adverse effect on its financial condition, results of operations, or cash flows.
	Indemnifications
	In connection with the sale of the Authentication Services business to Symantec in August 2010, the Company has agreed to indemnify Symantec for certain potential legal claims arising from the operation of the Authentication Services business for a period of sixty months after the closing of the sale transaction. The Company’s indemnification obligations in this regard are triggered only when indemnifiable claims exceed in the aggregate $4.0 million. Thereafter, the Company is obligated to indemnify Symantec for 50% of all indemnifiable claims. The Company’s maximum indemnification obligation with respect to these claims is capped at $50.0 million.

Cash_Cash_Equivalents_And_Mark1

Cash, Cash Equivalents, And Marketable Securities (Tables)	9 Months Ended
	Sep. 30, 2014
Cash, Cash Equivalents And Marketable Securities [Abstract]	'
Cash, Cash Equivalents, And Marketable Securities	'
	The following table summarizes the Company’s cash, cash equivalents, and marketable securities:
		September 30,		December 31,
		2014		2013
		(In thousands)
	Cash	$	68,413	$	72,232
	Money market funds	161,942		246,492
	Time deposits	3,522		3,978
	Debt securities issued by the U.S. Treasury	1,248,969		1,409,062
	Total	$	1,482,846	$	1,731,764
	Included in Cash and cash equivalents	$	233,949	$	339,223
	Included in Marketable securities	$	1,240,769	$	1,384,062
	Included in Other long-term assets (Restricted cash)	$	8,128	$	8,479

Fair_Value_Of_Financial_Instru1

Fair Value Of Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2014
Fair Value Disclosures [Abstract]	'
Fair Value, Assets And Liabilities Measured On Recurring Basis	'
	The following table summarizes the Company’s financial assets and liabilities measured at fair value on a recurring basis as of September 30, 2014 and December 31, 2013:
				Fair Value Measurement Using
		Total Fair Value		(Level 1)		(Level 2)			(Level 3)
		(In thousands)
	As of September 30, 2014:
	Assets:
	Investments in money market funds	$	161,942	$	161,942	$	—		$	—
	Debt securities issued by the U.S. Treasury	1,248,969		1,248,969		—			—
	Foreign currency forward contracts (1)	229		—		229			—
	Total	$	1,411,140	$	1,410,911	$	229		$	—
	Liabilities:
	Contingent interest derivative on the Subordinated Convertible Debentures	$	25,051	$	—	$	—		$	25,051
	Foreign currency forward contracts (2)	333		—		333			—
	Total	$	25,384	$	—	$	333		$	25,051
	As of December 31, 2013:
	Assets:
	Investments in money market funds	$	246,492	$	246,492	$	—		$	—
	Debt securities issued by the U.S. Treasury	1,409,062		1,409,062		—			—
	Foreign currency forward contracts (1)	141		—		141			—
	Total	$	1,655,695	$	1,655,554	$	141		$	—
	Liabilities:
	Contingent interest derivative on the Subordinated Convertible Debentures	$	29,004	$	—	$	—		$	29,004
	Foreign currency forward contracts (2)	131		—		131			—
	Total	$	29,135	$	—	$	131		$	29,004
	-1	Included in Income taxes receivable and other current assets
	-2	Included in Accounts payable and accrued liabilities
Changes In Fair Value Measurement Of Level 3 Items	'
	The following table summarizes the change in the fair value of the Company’s contingent interest derivative on the Subordinated Convertible Debentures during the three and nine months ended September 30, 2014 and 2013:
		Three Months Ended September 30,				Nine Months Ended September 30,
		2014		2013		2014			2013
		(In thousands)
	Beginning balance	$	18,489	$	15,640	$	29,004		$	11,203
	Unrealized loss (gain)	6,562		5,286		(3,953		)	9,723
	Ending balance	$	25,051	$	20,926	$	25,051		$	20,926

Other_Balance_Sheet_Items_Tabl

Other Balance Sheet Items (Tables)	9 Months Ended
	Sep. 30, 2014
Balance Sheet Related Disclosures [Abstract]	'
Income Tax Receivables And Other Current Assets	'
	Income taxes receivable and other current assets consist of the following:
		September 30,		December 31,
		2014		2013
		(In thousands)
	Income tax and other receivables	$	8,033	$	39,884
	Prepaid expenses	12,789		13,502
	Debt issuance costs	10,605		10,705
	Deferred tax assets	257		1,743
	Other	504		449
	Total income taxes receivable and other current assets	$	32,188	$	66,283
Components Of Accounts Payable And Accrued Liabilities	'
	Accounts payable and accrued liabilities consist of the following:
		September 30,		December 31,
		2014		2013
		(In thousands)
	Accounts payable	$	21,314	$	24,843
	Accrued employee compensation	39,029		49,974
	Customer deposits	26,287		20,869
	Income taxes payable and other tax liabilities	18,064		19,853
	Other accrued liabilities	28,848		33,737
	Total accounts payable and accrued liabilities	$	133,542	$	149,276

Calculation_Of_Net_Income_Per_1

Calculation Of Net Income Per Share (Tables)	9 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Schedule of Weighted Average Number of Shares [Table Text Block]	'
	The following table presents the weighted-average number of shares used in the calculation of basic and diluted net income per share:
		Three Months Ended September 30,		Nine Months Ended September 30,
		2014	2013	2014	2013
		(In thousands)
	Weighted-average shares of common stock outstanding	124,109	141,701	128,924	147,567
	Weighted-average potential shares of common stock outstanding:
	Conversion spread related to the Subordinated Convertible Debentures	13,228	10,480	12,935	9,258
	Unvested RSUs	730	669	670	664
	Stock options	25	94	30	98
	Employee stock purchase plan	20	7	25	19
	Shares used to compute diluted net income per share	138,112	152,951	142,584	157,606

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2014
Share-based Compensation [Abstract]	'
Classification Of Stock-Based Compensation	'
	The following table presents the classification of stock-based compensation:
		Three Months Ended September 30,						Nine Months Ended September 30,
		2014			2013			2014			2013
		(In thousands)
	Cost of revenues	$	1,618		$	1,524		$	4,748		$	4,639
	Sales and marketing	2,234			1,442			5,902			4,656
	Research and development	1,678			1,674			5,189			5,314
	General and administrative	9,386			5,937			18,442			12,397
	Total stock-based compensation expense	$	14,916		$	10,577		$	34,281		$	27,006
Nature Of Total Stock-Based Compensation	'
	The following table presents the nature of the Company’s total stock-based compensation:
		Three Months Ended September 30,						Nine Months Ended September 30,
		2014			2013			2014			2013
		(In thousands)
	RSUs	$	9,669		$	8,267		$	24,450		$	21,810
	Performance-based RSUs	4,897			1,935			8,795			3,082
	Employee stock purchase plan	1,046			1,130			3,124			4,262
	Stock options	—			—			—			180
	Capitalization (Included in Property and equipment, net)	(696		)	(755		)	(2,088		)	(2,328		)
	Total stock-based compensation expense	$	14,916		$	10,577		$	34,281		$	27,006

Interest_Expense_Tables

Interest Expense (Tables)	9 Months Ended
	Sep. 30, 2014
Interest Expense [Abstract]	'
Interest Expense Schedule	'
	The following table presents the components of the Company’s interest expense:
		Three Months Ended September 30,						Nine Months Ended September 30,
		2014			2013			2014			2013
		(In thousands)
	Contractual interest on the Subordinated Convertible Debentures	$	10,156		$	10,156		$	30,469		$	30,469
	Contractual interest on Senior Notes	8,672			8,672			26,015			15,899
	Amortization of debt discount on the Subordinated Convertible Debentures	2,375			2,189			6,986			6,435
	Credit facility and amortization of debt issuance costs	497			443			1,482			1,623
	Interest capitalized to Property and equipment, net	(167		)	(341		)	(544		)	(902		)
	Total interest expense	$	21,533		$	21,119		$	64,408		$	53,524

Nonoperating_loss_income_Table

Non-operating (loss) income (Tables)	9 Months Ended
	Sep. 30, 2014
Non-operating (loss) income, net [Abstract]	'
Schedule of Other Nonoperating Income (Expense) [Table Text Block]	'
	The following table presents the components of Non-operating (loss) income, net:
		Three Months Ended September 30,						Nine Months Ended September 30,
		2014			2013			2014		2013
		(In thousands)
	Unrealized (loss) gain on contingent interest derivative on Subordinated Convertible Debentures	$	(6,562	)	$	(5,286	)	$	3,953	$	(9,723	)
	Interest income	197			320			708		1,583
	Other, net	(108		)	374			376		3,932
	Total non-operating (loss) income, net	$	(6,473	)	$	(4,592	)	$	5,037	$	(4,208	)

Income_Taxes_Tables

Income Taxes (Tables)	9 Months Ended
	Sep. 30, 2014
Income Tax Disclosure [Abstract]	'
Income Tax Expense From Continuing Operations And The Effective Tax Rate	'
	The following table presents income tax expense and the effective tax rate:
		Three Months Ended September 30,						Nine Months Ended September 30,
		2014			2013			2014			2013
		(Dollars in thousands)
	Income tax expense	$	16,305		$	26,104		$	73,047		$	88,025
	Effective tax rate	15		%	24		%	20		%	26		%

Cash_Cash_Equivalents_And_Mark2

Cash, Cash Equivalents, And Marketable Securities (Cash, Cash Equivalents, And Marketable Securities) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'	'	'
Cash	$68,413	$72,232	'	'
Money market funds	161,942	246,492	'	'
Time deposits	3,522	3,978	'	'
Financial Instruments, Owned, US Government and Agency Obligations, at Fair Value	1,248,969	1,409,062	'	'
Total	1,482,846	1,731,764	'	'
Included in Cash and cash equivalents	233,949	339,223	117,591	130,736
Included in Marketable securities	1,240,769	1,384,062	'	'
Included in Other assets (Restricted cash)	$8,128	$8,479	'	'

Cash_Cash_Equivalents_And_Mark3

Cash, Cash Equivalents, And Marketable Securities Cash, Cash Equivalents, And Marketable Securities narrative (Details) (USD $)	9 Months Ended
	Sep. 30, 2014
Cash, Cash Equivalents And Marketable Securities [Abstract]	'
Available-for-sale Securities	$1,200,000,000
Debt securities gross unrealized gains	$100,000

Fair_Value_Of_Financial_Instru2

Fair Value Of Financial Instruments (Fair Value, Assets And Liabilities Measured On Recurring Basis) (Details) (Measured On A Recurring Basis [Member], USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Total Fair Value [Member]	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'
Total fair value of assets	$1,411,140	$1,655,695
Total fair of value of liabilities	25,384	29,135
Total Fair Value [Member] | Embedded Derivative Financial Instruments [Member]	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'
Derivative Financial Instruments, Liabilities, Fair Value Disclosure	25,051	29,004
Total Fair Value [Member] | Money Market Funds [Member]	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'
Investments in money market funds	161,942	246,492
Total Fair Value [Member] | Debt Securities Issued By The U.S. Treasury And Other U.S. Government Corporations And Agencies [Member]	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'
Investments, Fair Value Disclosure	1,248,969	1,409,062
Total Fair Value [Member] | Forward Contracts [Member]	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'
Foreign currency forward contracts assets	229	141
Foreign currency forward contracts liabilities	333	131
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'
Total fair value of assets	1,410,911	1,655,554
Total fair of value of liabilities	0	0
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Embedded Derivative Financial Instruments [Member]	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'
Derivative Financial Instruments, Liabilities, Fair Value Disclosure	0	0
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Money Market Funds [Member]	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'
Investments in money market funds	161,942	246,492
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Debt Securities Issued By The U.S. Treasury And Other U.S. Government Corporations And Agencies [Member]	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'
Investments, Fair Value Disclosure	1,248,969	1,409,062
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Forward Contracts [Member]	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'
Foreign currency forward contracts assets	0	0
Foreign currency forward contracts liabilities	0	0
Significant Other Observable Inputs (Level 2) [Member]	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'
Total fair value of assets	229	141
Total fair of value of liabilities	333	131
Significant Other Observable Inputs (Level 2) [Member] | Embedded Derivative Financial Instruments [Member]	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'
Derivative Financial Instruments, Liabilities, Fair Value Disclosure	0	0
Significant Other Observable Inputs (Level 2) [Member] | Money Market Funds [Member]	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'
Investments in money market funds	0	0
Significant Other Observable Inputs (Level 2) [Member] | Debt Securities Issued By The U.S. Treasury And Other U.S. Government Corporations And Agencies [Member]	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'
Investments, Fair Value Disclosure	0	0
Significant Other Observable Inputs (Level 2) [Member] | Forward Contracts [Member]	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'
Foreign currency forward contracts assets	229	141
Foreign currency forward contracts liabilities	333	131
Significant Unobservable Inputs (Level 3) [Member]	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'
Total fair value of assets	0	0
Total fair of value of liabilities	25,051	29,004
Significant Unobservable Inputs (Level 3) [Member] | Embedded Derivative Financial Instruments [Member]	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'
Derivative Financial Instruments, Liabilities, Fair Value Disclosure	25,051	29,004
Significant Unobservable Inputs (Level 3) [Member] | Money Market Funds [Member]	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'
Investments in money market funds	0	0
Significant Unobservable Inputs (Level 3) [Member] | Debt Securities Issued By The U.S. Treasury And Other U.S. Government Corporations And Agencies [Member]	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'
Investments, Fair Value Disclosure	0	0
Significant Unobservable Inputs (Level 3) [Member] | Forward Contracts [Member]	'	'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'
Foreign currency forward contracts assets	0	0
Foreign currency forward contracts liabilities	$0	$0

Fair_Value_Of_Financial_Instru3

Fair Value Of Financial Instruments (Changes In Fair Value Measurement Of Level 3 Items) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'	'	'
Beginning balance	$18,489	$15,640	$29,004	$11,203
Unrealized (gain) loss on contingent interest derivative on Convertible Debentures	6,562	5,286	-3,953	9,723
Ending balance	$25,051	$20,926	$25,051	$20,926

Fair_Value_Of_Financial_Instru4

Fair Value Of Financial Instruments (Narrative) (Details) (USD $)	3 Months Ended	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2014
contingent interest payment for debenture	$5,200,000	'
Fair value assumptions expected volatility rate	'	32.00%
fair value hypothetical increase decrease in volatility rate	'	5.00%
fair value assumptions credit spread	'	4.00%
fair value hypothetical increase decrease in credit spread	'	1.00%
Convertible Debt, Fair Value Disclosures	2,100,000,000	2,100,000,000
Debt Instrument, Fair Value Disclosure	$742,500,000	$742,500,000

Other_Balance_Sheet_Items_Inco

Other Balance Sheet Items (Income Tax Receivables And Other Current Assets) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Balance Sheet Related Disclosures [Abstract]	'	'
Income tax and other receivables	$8,033	$39,884
Prepaid expenses	12,789	13,502
Deferred Finance Costs, Current, Net	10,605	10,705
Deferred Tax Assets, Net of Valuation Allowance, Current	257	1,743
Other Assets, Miscellaneous, Current	504	449
Other Assets, Current	$32,188	$66,283

Other_Balance_Sheet_Items_Comp

Other Balance Sheet Items (Components Of Accounts Payable And Accrued Liabilities) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Balance Sheet Related Disclosures [Abstract]	'	'
Accounts payable	$21,314	$24,843
Accrued employee compensation	39,029	49,974
Customer deposits, net	26,287	20,869
Taxes payable and other tax liabilities	18,064	19,853
Other accrued liabilities	28,848	33,737
Total accounts payable and accrued liabilities	$133,542	$149,276

Stockholders_Deficit_Narrative

Stockholders' Deficit (Narrative) (Details) (USD $)	1 Months Ended		3 Months Ended	9 Months Ended
Share data in Millions, except Per Share data, unless otherwise specified	Jul. 23, 2014	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2014
			Share Buyback Program [Member]	Share Buyback Program [Member]	Restricted Stock Units [Member]
Treasury Stock Repurchase Programs [Line Items]	'	'	'	'	'
Additional share repurchase amount authorized	$490,600,000	'	'	'	'
Common stock authorized to repurchase	'	'	1,000,000,000	1,000,000,000	'
Remaining common stock available for repurchase	509,400,000	832,700,000	'	'	'
Common stock repurchase, share	'	'	4.2	12.7	0.3
Average stock price	'	'	$53.99	$51.96	$54.64
Aggregate cost of share	'	'	226,300,000	657,900,000	15,600,000
Common stock, held in treasury	'	199.6	'	'	'
Common stock repurchased	'	$6,600,000,000	'	'	'

Calculation_Of_Net_Income_Per_2

Calculation Of Net Income Per Share (Weighted-Average Shares Used In Calculation Of Basic And Diluted EPS) (Details)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Earnings Per Share [Abstract]	'	'	'	'
Weighted-average number of common shares outstanding	124,109	141,701	128,924	147,567
Conversion spread related to Convertible Debentures	13,228	10,480	12,935	9,258
Unvested restricted stock units	730	669	670	664
Stock options	25	94	30	98
Employee stock purchase plan	20	7	25	19
Shares used to compute diluted net income per share	138,112	152,951	142,584	157,606

StockBased_Compensation_Classi

Stock-Based Compensation (Classification Of Stock-Based Compensation) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation	$14,916	$10,577	$34,281	$27,006
Cost Of Revenues [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation	1,618	1,524	4,748	4,639
Sales And Marketing [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation	2,234	1,442	5,902	4,656
Research And Development [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation	1,678	1,674	5,189	5,314
General And Administrative [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation	$9,386	$5,937	$18,442	$12,397

StockBased_Compensation_Nature

Stock-Based Compensation (Nature Of Total Stock-Based Compensation) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Capitalized Amount	($696)	($755)	($2,088)	($2,328)
Stock-based compensation	14,916	10,577	34,281	27,006
Restricted Stock Units [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Stock-based compensation	9,669	8,267	24,450	21,810
Performance Shares [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Stock-based compensation	4,897	1,935	8,795	3,082
Employee Stock Purchase Plan [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Stock-based compensation	1,046	1,130	3,124	4,262
Stock Options [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Stock-based compensation	$0	$0	$0	$180

Interest_Expense_Interest_Expe

Interest Expense (Interest Expense Schedule) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Interest Expense [Abstract]	'	'	'	'
Contractual interest on Convertible Debentures	$10,156	$10,156	$30,469	$30,469
Contractual interest on Notes	8,672	8,672	26,015	15,899
Amortization of debt discount on the Convertible Debentures	2,375	2,189	6,986	6,435
Credit facility and other interest expense	497	443	1,482	1,623
Interest capitalized to Property and equipment, net	-167	-341	-544	-902
Total interest expense	$21,533	$21,119	$64,408	$53,524

Nonoperating_loss_income_Detai

Non-operating (loss) income (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Non-operating (loss) income, net [Abstract]	'	'	'	'
Unrealized Gain (Loss) on Derivatives	($6,562)	($5,286)	$3,953	($9,723)
Interest and Dividend Income, Securities	197	320	708	1,583
Other Nonoperating Income (Expense)	-108	374	376	3,932
Nonoperating (loss) Income	($6,473)	($4,592)	$5,037	($4,208)

Nonoperating_loss_income_NonOp

Non-operating (loss) income Non-Operating Income, Net (Narrative) (Details) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013
Non-Operating Income, Net [Abstract]	'
Realized Gain On Equity Security	$3

Income_Taxes_Narrative_Details

Income Taxes (Narrative) (Details) (USD $)	3 Months Ended			9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Jun. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
	Rate		Rate	Rate	Rate
Income Tax Disclosure [Abstract]	'	'	'	'	'
Statutory federal rate	35.00%	'	35.00%	35.00%	35.00%
Foreign Earnings Repatriated	'	'	'	$740.90	'
Foreign Withholding Tax Accrued	'	'	'	28.1	'
Tax Credit Carryforward, Amount	191.4	'	'	191.4	'
Other Tax Expense (Benefit)	11.4	5.2	'	'	'
Unrecognized Tax Benefits	$22.20	'	'	$22.20	'

Income_Taxes_Income_Tax_Expens

Income Taxes (Income Tax Expense From Continuing Operations And Effective Tax Rate) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
	Rate	Rate	Rate	Rate
Income Tax Disclosure [Abstract]	'	'	'	'
Income tax expense from continuing operations	$16,305	$26,104	$73,047	$88,025
Effective tax rate	15.00%	24.00%	20.00%	26.00%

Contingencies_Details

Contingencies (Details) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Indemnification period (months)	60
Claims threshold amount to trigger indemnification obligation	$4
Percentage of claims to be indemnified	50.00%
Maximum indemnification obligation	$50