VeriSign (VRSN) 10-Q 23 Apr 15 2015 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information Document	3 Months Ended
	Mar. 31, 2015	Apr. 17, 2015
Document And Entity Information [Abstract]
Entity Registrant Name	VERISIGN INC/CA
Entity Central Index Key	1014473
Current Fiscal Year End Date	-19
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	31-Mar-15
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Amendment Flag	FALSE
Entity Common Stock, Shares Outstanding		116,434,450

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Current assets:
Cash and cash equivalents	$705,879	$191,608
Marketable securities	1,165,443	1,233,076
Accounts receivable, net	14,656	13,448
Other Assets, Current	54,006	52,475
Total current assets	1,939,984	1,490,607
Property and equipment, net	311,870	319,028
Goodwill	52,527	52,527
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent	266,508	266,954
Other long-term assets	36,821	25,743
Total long-term assets	667,726	664,252
Total assets	2,607,710	2,154,859
Current liabilities:
Accounts payable and accrued liabilities	150,482	190,278
Deferred revenues	648,439	621,307
Convertible Debentures, including contingent interest derivative	635,453	631,190
Deferred Tax Liabilities, Net, Current	487,817	477,781
Total current liabilities	1,922,191	1,920,556
Long-term deferred revenues	276,497	269,047
Senior Notes	1,250,000	750,000
Other long-term liabilities	106,899	98,722
Total long-term liabilities	1,633,396	1,117,769
Total liabilities	3,555,587	3,038,325
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: 322,707 at March 31, 2015 and 321,699 at December 31, 2014; Outstanding shares: 116,429 at March 31, 2015 and 118,452 at December 31, 2014	323	322
Additional paid-in capital	17,967,312	18,120,045
Accumulated deficit	-18,912,597	-19,000,835
Accumulated other comprehensive loss	-2,915	-2,998
Total stockholders' deficit	-947,877	-883,466
Total liabilities and stockholders' deficit	$2,607,710	$2,154,859

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014
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	322,707	321,699
Common stock, outstanding shares	116,429	118,452

Condensed_Consolidated_Stateme

Condensed Consolidated Statements Of Comprehensive Income (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Income Statement [Abstract]
Revenues	$258,422	$248,796
Costs and expenses:
Cost of revenues	48,353	48,026
Sales and marketing	22,382	20,289
Research and development	17,152	18,439
General and administrative	26,298	22,457
Total costs and expenses	114,185	109,211
Operating income	144,237	139,585
Interest expense	-22,017	-21,385
Non-operating income (loss), net	-5,555	6,516
Income before income taxes	116,665	124,716
Income tax expense	-28,427	-30,293
Net Income	88,238	94,423
Change in unrealized gain on investments, net of tax	87	8
Realized gain on investments, net of tax, included in net income	-4	5
Other comprehensive income (loss)	83	13
Comprehensive Income	$88,321	$94,436
Basic income (loss) per share
Continuing operations	$0.75	$0.71
Diluted income (loss) per share
Continuing operations	$0.66	$0.64
Shares used to compute net income per share
Basic	117,139	133,417
Diluted	133,850	148,600

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements Of Cash Flows (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities:
Net income	$88,238	$94,423
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of property and equipment and amortization of other intangible assets	15,747	16,008
Stock-based compensation	10,128	9,993
Excess tax benefit associated with stock-based compensation	-5,993	0
Unrealized Gain (Loss) on Derivatives	7,019	-5,269
contingent interest payment for debenture	-5,225	0
Other, net	2,701	1,004
Changes in operating assets and liabilities
Accounts receivable	-1,282	-1,806
Prepaid expenses and other assets	-3,084	7,925
Accounts payable and accrued liabilities	-28,816	-34,579
Deferred revenues	34,582	30,384
Deferred Income Taxes	18,654	23,546
Net cash provided by operating activities	132,669	141,629
Cash flows from investing activities:
Proceeds from maturities and sales of marketable securities	325,399	718,177
Purchases of marketable securities	-257,415	-784,090
Purchases of property and equipment	-13,042	-11,262
Other investing activities	-3,787	34
Net cash used in investing activities	51,155	-77,141
Cash flows from financing activities:
Proceeds from issuance of common stock from option exercises and employee stock purchase plans	8,776	8,668
Repurchases of common stock	-178,330	-145,556
Proceeds from Issuance of Senior Long-term Debt	493,824	0
Excess tax benefit associated with stock-based compensation	5,993	0
Net cash used in financing activities	330,263	-136,888
Effect of exchange rate changes on cash and cash equivalents	184	230
Net decrease in cash and cash equivalents	514,271	-72,170
Cash and cash equivalents at beginning of period	191,608	339,223
Cash and cash equivalents at end of period	705,879	267,053
Supplemental cash flow disclosures:
Cash paid for interest, net of capitalized interest	25,494	20,209
Cash paid for income taxes, net of refunds received	$12,970	$7,651

Basis_Of_Presentation

Basis Of Presentation	3 Months Ended
	Mar. 31, 2015
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 2014 Annual Report on Form 10-K (the “2014 Form 10-K”) filed with the SEC on February 13, 2015.
	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 is expected to 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	3 Months Ended
	Mar. 31, 2015
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:
		March 31,		December 31,
		2015		2014
		(In thousands)
	Cash	$	108,021	$	110,799
	Money market funds	605,413		85,453
	Time deposits	4,259		3,384
	Debt securities issued by the U.S. Treasury	1,165,235		1,233,076
	Equity securities of public companies	209		—
	Total	$	1,883,137	$	1,432,712
	Included in Cash and cash equivalents	$	705,879	$	191,608
	Included in Marketable securities	$	1,165,443	$	1,233,076
	Included in Other long-term assets (Restricted cash)	$	11,815	$	8,028
	The fair value of the debt securities held as of March 31, 2015 was $1.2 billion, including less than $0.1 million of gross and net unrealized losses. All of the debt securities held as of March 31, 2015 are scheduled to mature in less than one year.

Fair_Value_Of_Financial_Instru

Fair Value Of Financial Instruments	3 Months Ended
	Mar. 31, 2015
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 March 31, 2015 and December 31, 2014:
					Fair Value Measurement Using
		Total Fair Value			(Level 1)			(Level 2)		(Level 3)
		(In thousands)
	As of March 31, 2015:
	Assets:
	Investments in money market funds	$	605,413		$	605,413		$	—	$	—
	Debt securities issued by the U.S. Treasury	1,165,235			1,165,235			—		—
	Equity securities of public companies	209			209			—		—
	Foreign currency forward contracts (1)	729			—			729		—
	Total	$	1,771,586		$	1,770,857		$	729	$	—
	Liabilities:
	Contingent interest derivative on the Subordinated Convertible Debentures	$	28,549		$	—		$	—	$	28,549
	Foreign currency forward contracts (2)	112			—			112		—
	Total	$	28,661		$	—		$	112	$	28,549
	As of December 31, 2014:
	Assets:
	Investments in money market funds	$	85,453		$	85,453		$	—	$	—
	Debt securities issued by the U.S. Treasury	1,233,076			1,233,076			—		—
	Foreign currency forward contracts (1)	330			—			330		—
	Total	$	1,318,859		$	1,318,529		$	330	$	—
	Liabilities:
	Contingent interest derivative on the Subordinated Convertible Debentures	$	26,755		$	—		$	—	$	26,755
	Foreign currency forward contracts (2)	169			—			169		—
	Total	$	26,924		$	—		$	169	$	26,755
	-1	Included in 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 equity securities of public companies is based on quoted market prices and are classified as Level 1. Investments in equity securities of public companies 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 March 31, 2015, the valuation of the contingent interest derivative assumed a volatility rate of approximately 24%. 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 March 31, 2015. 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 months ended March 31, 2015 and 2014:
		Three Months Ended March 31,
		2015			2014
		(In thousands)
	Beginning balance	$	26,755		$	29,004
	Payment of contingent interest	(5,225		)	—
	Unrealized loss (gain)	7,019			(5,269		)
	Ending balance	$	28,549		$	23,735
	On February 15, 2015, the Company paid 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. In February 2015, the upside trigger on the Subordinated Convertible Debentures was met for the six month interest period from February 15, 2015 through August 15, 2015. The $5.5 million contingent interest payable in August 2015 is included in the balance of the contingent interest derivative on the Subordinated Convertible Debentures as of March 31, 2015.
	Other
	The Company’s other financial instruments include cash, accounts receivable, restricted cash, and accounts payable. As of March 31, 2015, the carrying value of these financial instruments approximated their fair value. The fair value of the Company’s Subordinated Convertible Debentures was $2.5 billion as of March 31, 2015. The fair values of the senior notes due 2023 (the “2023 Senior Notes”) and the senior notes due 2025 (the “2025 Senior Notes”) were $750.0 million and $512.5 million, respectively, as of March 31, 2015. The fair values of these debt instruments are based on available market information from public data sources and are classified as Level 2.

Other_Balance_Sheet_Items

Other Balance Sheet Items	3 Months Ended
	Mar. 31, 2015
Balance Sheet Related Disclosures [Abstract]
Other Balance Sheet Items	Other Balance Sheet Items
	Other Current Assets
	Other current assets consist of the following:
		March 31,		December 31,
		2015		2014
		(In thousands)
	Income tax and other receivables	$	20,839	$	24,821
	Prepaid expenses	21,401		16,190
	Debt issuance costs	10,534		10,570
	Deferred tax assets	252		247
	Other	980		647
	Total other current assets	$	54,006	$	52,475
	Other Long-Term Assets
	Other long-term assets consist of the following:
		March 31,		December 31,
		2015		2014
		(In thousands)
	Debt issuance costs	17,631		10,160
	Long-term restricted cash	11,815		8,028
	Other tax receivable	5,673		5,673
	Long-term prepaid expenses and other assets	1,702		1,882
	Total other long-term assets	$	36,821	$	25,743
	The Company recorded $6.5 million of debt issuance costs in connection with the offering of the 2025 Senior Notes and $1.3 million of debt issuance costs related to the new unsecured revolving credit facility during the three months ended March 31, 2015. The 2025 Senior Notes and the new credit facility are discussed in Note 8 “Debt and Interest Expense.”
	Accounts Payable and Accrued Liabilities
	Accounts payable and accrued liabilities consist of the following:
		March 31,		December 31,
		2015		2014
		(In thousands)
	Accounts payable	$	22,778	$	29,335
	Accrued employee compensation	28,193		49,470
	Customer deposits	28,654		30,103
	Income taxes payable and other tax liabilities	33,792		47,079
	Other accrued liabilities	37,065		34,291
	Total accounts payable and accrued liabilities	$	150,482	$	190,278
	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, 2014, was paid during the three months ended March 31, 2015. Income taxes payable and other tax liabilities as of March 31, 2015, reflects payments made during the first quarter of 2015 for income taxes in certain non-U.S. jurisdictions. 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 2023 Senior Notes which is paid semi-annually in arrears on May 1 and November 1.

Stockholders_Deficit

Stockholders' Deficit	3 Months Ended
	Mar. 31, 2015
Stockholders' Equity Note [Abstract]
Stockholders' (Deficit) Equity	Stockholders’ Deficit
	On January 30, 2015, the Company’s Board of Directors approved an additional authorization for share repurchases of approximately $452.9 million of its common stock in addition to the $547.1 million remaining available for repurchases of its 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 months ended March 31, 2015 the Company repurchased 2.7 million shares of its common stock, at an average stock price of $58.32 for an aggregate cost of $159.8 million. As of March 31, 2015, $916.6 million remained available for further repurchases under the share buyback program.
	During three months ended March 31, 2015, the Company placed 0.3 million shares, at an average stock price of $63.55, and for an aggregate cost of $18.5 million, into treasury stock for purposes related to tax withholding upon vesting of Restricted Stock Units (“RSUs”).
	Since inception the Company has repurchased 206.3 million shares of its common stock for an aggregate cost of $7.0 billion, which is presented as a reduction of Additional paid-in capital.

Calculation_Of_Net_Income_Per_

Calculation Of Net Income Per Share	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Calculation Of Net Income Per Share Attributable To Verisign Stockholders	Calculation of Net Income per Share
	The following table presents the computation of weighted-average shares used in the calculation of basic and diluted net income per share:
		Three Months Ended March 31,
		2015	2014
		(In thousands)
	Weighted-average shares of common stock outstanding	117,139	133,417
	Weighted-average potential shares of common stock outstanding:
	Conversion spread related to the Subordinated Convertible Debentures	15,812	14,286
	Unvested RSUs	869	817
	Stock options	8	37
	Employee stock purchase plan	22	43
	Shares used to compute diluted net income per share	133,850	148,600
	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	3 Months Ended
	Mar. 31, 2015
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 March 31,
		2015			2014
		(In thousands)
	Cost of revenues	$	1,739		$	1,598
	Sales and marketing	1,299			1,848
	Research and development	1,721			1,872
	General and administrative	5,369			4,675
	Total stock-based compensation expense	$	10,128		$	9,993
	The following table presents the nature of the Company’s total stock-based compensation:
		Three Months Ended March 31,
		2015			2014
		(In thousands)
	RSUs	$	8,294		$	7,715
	Performance-based RSUs	1,453			1,868
	Employee stock purchase plan	1,081			1,040
	Capitalization (Included in Property and equipment, net)	(700		)	(630		)
	Total stock-based compensation expense	$	10,128		$	9,993

Interest_Expense

Interest Expense	3 Months Ended
	Mar. 31, 2015
Interest Expense [Abstract]
Interest Expense	Interest Expense
	Senior Notes due 2025
	On March 27, 2015, the Company issued $500.0 million principal amount of 5.25% senior unsecured notes due April 1, 2025. The Company intends to use the proceeds for general corporate purposes, including, but not limited to, the repurchase of shares of its common stock under its share buyback program. In connection with the offering the Company incurred $6.5 million of issuance costs which were deferred and included in Other long-term assets. The issuance costs will be amortized to Interest expense over the 10 year term of the notes. The Company will pay interest on the notes semi-annually on April 1 and October 1, commencing on October 1, 2015.
	The Company may redeem the 2025 Senior Notes, in whole or in part, at any time at the Company’s option at specified redemption prices. The Company entered into a registration rights agreement (the “Registration Rights Agreement”) with the initial purchasers that provides holders of the notes certain rights relating to registration of the notes under the Securities Act of 1933, as amended. If the Company does not complete the registration of the 2025 Senior Notes pursuant to the terms of the Registration Rights Agreement (a “Registration Default”), the annual interest rate of the notes will be increased by 0.25% per annum during the 90-day period immediately following such Registration Default and will increase by 0.25% per annum at the end of each subsequent 90-day period, but in no event shall such increase exceed 1.0% per annum.
	2015 Credit Facility
	On March 31, 2015, the Company entered into a new credit agreement for a $200.0 million committed senior unsecured revolving credit facility (the “2015 Credit Facility”), The 2015 Credit Facility replaces the Company’s 2011 Credit Facility which was set to expire in November 2016. The terms of the 2015 Credit Facility are substantially similar to the terms of the previous 2011 Credit Facility. The 2015 Credit Facility includes financial covenants requiring that the Company’s interest coverage ratio not be less than 3.0 to 1.0 for any period of four consecutive quarters and the Company’s leverage ratio not exceed 2.5 to 1.0. As of March 31, 2015, there were no borrowings outstanding under the facility and the Company was in compliance with the financial covenants. The 2015 Credit Facility expires on April 1, 2020 at which time any outstanding borrowings are due.
	The following table presents the components of the Company’s interest expense:
		Three Months Ended March 31,
		2015			2014
		(In thousands)
	Contractual interest on the Subordinated Convertible Debentures	$	10,156		$	10,156
	Contractual interest on 2023 Senior Notes	8,672			8,672
	Contractual interest on 2025 Senior Notes	365			—
	Amortization of debt discount on the Subordinated Convertible Debentures	2,477			2,282
	Credit facility fees and amortization of debt issuance costs	504			491
	Interest capitalized to Property and equipment, net	(157		)	(216		)
	Total interest expense	$	22,017		$	21,385

Nonoperating_loss_income

Non-operating (loss) income	3 Months Ended
	Mar. 31, 2015
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 March 31,
		2015			2014
		(In thousands)
	Unrealized (loss) gain on contingent interest derivative on Subordinated Convertible Debentures	$	(7,019	)	$	5,269
	Interest income	259			316
	Other, net	1,205			931
	Total non-operating (loss) income, net	$	(5,555	)	$	6,516
	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.

Income_Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes
	The following table presents income tax expense and the effective tax rate:
		Three Months Ended March 31,
		2015			2014
		(Dollars in thousands)
	Income tax expense	$	28,427		$	30,293
	Effective tax rate	24		%	24		%
	The effective tax rate for the three months ended March 31, 2015 and 2014 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.
	Current deferred tax liabilities and Other long-term tax liabilities as of March 31, 2015 reflect the use of a portion of U.S. foreign tax credits during the first quarter of 2015, an increase in the deferred tax liability related to the Subordinated Convertible Debentures, and the reclassification of unrecognized tax benefits.

Contingencies

Contingencies	3 Months Ended
	Mar. 31, 2015
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)	3 Months Ended
	Mar. 31, 2015
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:
		March 31,		December 31,
		2015		2014
		(In thousands)
	Cash	$	108,021	$	110,799
	Money market funds	605,413		85,453
	Time deposits	4,259		3,384
	Debt securities issued by the U.S. Treasury	1,165,235		1,233,076
	Equity securities of public companies	209		—
	Total	$	1,883,137	$	1,432,712
	Included in Cash and cash equivalents	$	705,879	$	191,608
	Included in Marketable securities	$	1,165,443	$	1,233,076
	Included in Other long-term assets (Restricted cash)	$	11,815	$	8,028

Fair_Value_Of_Financial_Instru1

Fair Value Of Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2015
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 March 31, 2015 and December 31, 2014:
					Fair Value Measurement Using
		Total Fair Value			(Level 1)			(Level 2)		(Level 3)
		(In thousands)
	As of March 31, 2015:
	Assets:
	Investments in money market funds	$	605,413		$	605,413		$	—	$	—
	Debt securities issued by the U.S. Treasury	1,165,235			1,165,235			—		—
	Equity securities of public companies	209			209			—		—
	Foreign currency forward contracts (1)	729			—			729		—
	Total	$	1,771,586		$	1,770,857		$	729	$	—
	Liabilities:
	Contingent interest derivative on the Subordinated Convertible Debentures	$	28,549		$	—		$	—	$	28,549
	Foreign currency forward contracts (2)	112			—			112		—
	Total	$	28,661		$	—		$	112	$	28,549
	As of December 31, 2014:
	Assets:
	Investments in money market funds	$	85,453		$	85,453		$	—	$	—
	Debt securities issued by the U.S. Treasury	1,233,076			1,233,076			—		—
	Foreign currency forward contracts (1)	330			—			330		—
	Total	$	1,318,859		$	1,318,529		$	330	$	—
	Liabilities:
	Contingent interest derivative on the Subordinated Convertible Debentures	$	26,755		$	—		$	—	$	26,755
	Foreign currency forward contracts (2)	169			—			169		—
	Total	$	26,924		$	—		$	169	$	26,755
	-1	Included in 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 months ended March 31, 2015 and 2014:
		Three Months Ended March 31,
		2015			2014
		(In thousands)
	Beginning balance	$	26,755		$	29,004
	Payment of contingent interest	(5,225		)	—
	Unrealized loss (gain)	7,019			(5,269		)
	Ending balance	$	28,549		$	23,735

Other_Balance_Sheet_Items_Tabl

Other Balance Sheet Items (Tables)	3 Months Ended
	Mar. 31, 2015
Balance Sheet Related Disclosures [Abstract]
Income Tax Receivables And Other Current Assets	Other current assets consist of the following:
		March 31,		December 31,
		2015		2014
		(In thousands)
	Income tax and other receivables	$	20,839	$	24,821
	Prepaid expenses	21,401		16,190
	Debt issuance costs	10,534		10,570
	Deferred tax assets	252		247
	Other	980		647
	Total other current assets	$	54,006	$	52,475
Schedule of Other Assets, Noncurrent [Table Text Block]	Other long-term assets consist of the following:
		March 31,		December 31,
		2015		2014
		(In thousands)
	Debt issuance costs	17,631		10,160
	Long-term restricted cash	11,815		8,028
	Other tax receivable	5,673		5,673
	Long-term prepaid expenses and other assets	1,702		1,882
	Total other long-term assets	$	36,821	$	25,743
Components Of Accounts Payable And Accrued Liabilities	Accounts payable and accrued liabilities consist of the following:
		March 31,		December 31,
		2015		2014
		(In thousands)
	Accounts payable	$	22,778	$	29,335
	Accrued employee compensation	28,193		49,470
	Customer deposits	28,654		30,103
	Income taxes payable and other tax liabilities	33,792		47,079
	Other accrued liabilities	37,065		34,291
	Total accounts payable and accrued liabilities	$	150,482	$	190,278

Calculation_Of_Net_Income_Per_1

Calculation Of Net Income Per Share (Tables)	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Schedule of Weighted Average Number of Shares [Table Text Block]	The following table presents the computation of weighted-average shares used in the calculation of basic and diluted net income per share:
		Three Months Ended March 31,
		2015	2014
		(In thousands)
	Weighted-average shares of common stock outstanding	117,139	133,417
	Weighted-average potential shares of common stock outstanding:
	Conversion spread related to the Subordinated Convertible Debentures	15,812	14,286
	Unvested RSUs	869	817
	Stock options	8	37
	Employee stock purchase plan	22	43
	Shares used to compute diluted net income per share	133,850	148,600

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2015
Share-based Compensation [Abstract]
Classification Of Stock-Based Compensation	The following table presents the classification of stock-based compensation:
		Three Months Ended March 31,
		2015			2014
		(In thousands)
	Cost of revenues	$	1,739		$	1,598
	Sales and marketing	1,299			1,848
	Research and development	1,721			1,872
	General and administrative	5,369			4,675
	Total stock-based compensation expense	$	10,128		$	9,993
Nature Of Total Stock-Based Compensation	The following table presents the nature of the Company’s total stock-based compensation:
		Three Months Ended March 31,
		2015			2014
		(In thousands)
	RSUs	$	8,294		$	7,715
	Performance-based RSUs	1,453			1,868
	Employee stock purchase plan	1,081			1,040
	Capitalization (Included in Property and equipment, net)	(700		)	(630		)
	Total stock-based compensation expense	$	10,128		$	9,993

Interest_Expense_Tables

Interest Expense (Tables)	3 Months Ended
	Mar. 31, 2015
Interest Expense [Abstract]
Interest Expense Schedule	The following table presents the components of the Company’s interest expense:
		Three Months Ended March 31,
		2015			2014
		(In thousands)
	Contractual interest on the Subordinated Convertible Debentures	$	10,156		$	10,156
	Contractual interest on 2023 Senior Notes	8,672			8,672
	Contractual interest on 2025 Senior Notes	365			—
	Amortization of debt discount on the Subordinated Convertible Debentures	2,477			2,282
	Credit facility fees and amortization of debt issuance costs	504			491
	Interest capitalized to Property and equipment, net	(157		)	(216		)
	Total interest expense	$	22,017		$	21,385

Nonoperating_loss_income_Table

Non-operating (loss) income (Tables)	3 Months Ended
	Mar. 31, 2015
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 March 31,
		2015			2014
		(In thousands)
	Unrealized (loss) gain on contingent interest derivative on Subordinated Convertible Debentures	$	(7,019	)	$	5,269
	Interest income	259			316
	Other, net	1,205			931
	Total non-operating (loss) income, net	$	(5,555	)	$	6,516

Income_Taxes_Tables

Income Taxes (Tables)	3 Months Ended
	Mar. 31, 2015
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 March 31,
		2015			2014
		(Dollars in thousands)
	Income tax expense	$	28,427		$	30,293
	Effective tax rate	24		%	24		%

Cash_Cash_Equivalents_And_Mark2

Cash, Cash Equivalents, And Marketable Securities (Cash, Cash Equivalents, And Marketable Securities) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]
Cash	$108,021	$110,799
Money market funds	605,413	85,453
Time deposits	4,259	3,384
Financial Instruments, Owned, US Government and Agency Obligations, at Fair Value	1,165,235	1,233,076
Available-for-sale Securities, Equity Securities	209	0
Total	1,883,137	1,432,712
Included in Cash and cash equivalents	705,879	191,608	267,053	339,223
Included in Marketable securities	1,165,443	1,233,076
Included in Other assets (Restricted cash)	$11,815	$8,028

Cash_Cash_Equivalents_And_Mark3

Cash, Cash Equivalents, And Marketable Securities Cash, Cash Equivalents, And Marketable Securities narrative (Details) (USD $)	Mar. 31, 2015
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 $)	Mar. 31, 2015	Dec. 31, 2014
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	$1,771,586	$1,318,859
Total fair of value of liabilities	28,661	26,924
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	28,549	26,755
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	605,413	85,453
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	1,165,235	1,233,076
Total Fair Value [Member] | Equity Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments, Fair Value Disclosure	209
Total Fair Value [Member] | Forward Contracts [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Foreign currency forward contracts assets	729	330
Foreign currency forward contracts liabilities	112	169
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	1,770,857	1,318,529
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	605,413	85,453
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	1,165,235	1,233,076
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Equity Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments, Fair Value Disclosure	209
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	729	330
Total fair of value of liabilities	112	169
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] | Equity Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments, Fair Value Disclosure	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	729	330
Foreign currency forward contracts liabilities	112	169
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	28,549	26,755
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	28,549	26,755
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] | Equity Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments, Fair Value Disclosure	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
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	$26,755	$29,004
contingent interest payment for debenture	-5,225	0
Unrealized (gain) loss on contingent interest derivative on Convertible Debentures	7,019	-5,269
Ending balance	$28,549	$23,735

Fair_Value_Of_Financial_Instru4

Fair Value Of Financial Instruments (Narrative) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
contingent interest payment for debenture	($5,225,000)	$0
Fair value assumptions expected volatility rate	24.00%
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	2,500,000,000
Debt instrument fair value senior notes 2023	750,000,000
Debt instrument fair value senior notes 2025	$512,500,000

Other_Balance_Sheet_Items_Inco

Other Balance Sheet Items (Income Tax Receivables And Other Current Assets) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Balance Sheet Related Disclosures [Abstract]
Income tax and other receivables	$20,839	$24,821
Prepaid expenses	21,401	16,190
Deferred Finance Costs, Current, Net	10,534	10,570
Deferred Tax Assets, Net of Valuation Allowance, Current	252	247
Other Assets, Miscellaneous, Current	980	647
Other Assets, Current	$54,006	$52,475

Other_Balance_Sheet_Items_Comp

Other Balance Sheet Items (Components Of Accounts Payable And Accrued Liabilities) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Balance Sheet Related Disclosures [Abstract]
Accounts payable	$22,778	$29,335
Accrued employee compensation	28,193	49,470
Customer deposits, net	28,654	30,103
Taxes payable and other tax liabilities	33,792	47,079
Other accrued liabilities	37,065	34,291
Total accounts payable and accrued liabilities	$150,482	$190,278

Other_Balance_Sheet_Items_Othe

Other Balance Sheet Items Other Balance Sheet Items (Other long-term assets) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Balance Sheet Related Disclosures [Abstract]
Debt issuance costs	$17,631	$10,160
Long-term restricted cash	11,815	8,028
Other tax receivable	5,673	5,673
Long-term prepaid expenses and other assets	1,702	1,882
Total other long-term assets	$36,821	$25,743

Other_Balance_Sheet_Items_Othe1

Other Balance Sheet Items Other Balance Sheet (Narrative) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015
Senior Notes [Member]
Senior notes [Line Items]
Debt Issuance Cost	$6,500
Revolving Credit Facility [Member]
Senior notes [Line Items]
Debt Issuance Cost	$1,300

Stockholders_Deficit_Narrative

Stockholders' Deficit (Narrative) (Details) (USD $)	1 Months Ended	3 Months Ended
Share data in Millions, except Per Share data, unless otherwise specified	Jul. 23, 2014	Mar. 31, 2015
Treasury Stock Repurchase Programs [Line Items]
Additional share repurchase amount authorized	$452,900,000
Remaining common stock available for repurchase	547,100,000	916,600,000
Common stock, held in treasury		206.3
Common stock repurchased		7,000,000,000
Share Buyback Program [Member]
Treasury Stock Repurchase Programs [Line Items]
Common stock authorized to repurchase		1,000,000,000
Common stock repurchase, share		2.7
Average stock price		$58.32
Aggregate cost of share		159,800,000
Restricted Stock Units [Member]
Treasury Stock Repurchase Programs [Line Items]
Common stock repurchase, share		0.3
Average stock price		$63.55
Aggregate cost of share		$18,500,000

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
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Earnings Per Share [Abstract]
Weighted-average number of common shares outstanding	117,139	133,417
Conversion spread related to Convertible Debentures	15,812	14,286
Unvested restricted stock units	869	817
Stock options	8	37
Employee stock purchase plan	22	43
Shares used to compute diluted net income per share	133,850	148,600

StockBased_Compensation_Classi

Stock-Based Compensation (Classification Of Stock-Based Compensation) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	$10,128	$9,993
Cost Of Revenues [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	1,739	1,598
Sales And Marketing [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	1,299	1,848
Research And Development [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	1,721	1,872
General And Administrative [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	$5,369	$4,675

StockBased_Compensation_Nature

Stock-Based Compensation (Nature Of Total Stock-Based Compensation) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Capitalized Amount	($700)	($630)
Stock-based compensation	10,128	9,993
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	8,294	7,715
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	1,453	1,868
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$1,081	$1,040

Interest_Expense_Interest_Expe

Interest Expense (Interest Expense Schedule) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Contractual interest on Convertible Debentures	$10,156	$10,156
Amortization of debt discount on the Convertible Debentures	2,477	2,282
Credit facility and other interest expense	504	491
Interest capitalized to Property and equipment, net	-157	-216
Total interest expense	22,017	21,385
Due 2023 [Member]
Contractual interest on Notes	8,672	8,672
Due 2025 [Member]
Contractual interest on Notes	$365	$0

Debt_and_Interest_Expense_Debt

Debt and Interest Expense Debt and Interest Expense (Narrative) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 27, 2015
	Rate	Rate
Debt Instrument [Line Items]
Debt Instrument, Offering Date	27-Mar-15
Debt Instrument, Face Amount		$500
Debt Instrument, Interest Rate, Stated Percentage		5.25%
Debt Instrument, Maturity Date	1-Apr-25
issuance cost on senior note	6.5
Debt Instrument, Term Length	10 years
increase in note interest rate	0.25%
maximum increase in rate	1.00%
Line of Credit Facility [Abstract]
Debt Instrument, Unused Borrowing Capacity, Amount	$200
Minimum [Member]
Debt Instrument [Line Items]
Interest Coverage Ratio	3
Maximum [Member]
Debt Instrument [Line Items]
Interest Coverage Ratio	2.5

Nonoperating_loss_income_Detai

Non-operating (loss) income (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Non-operating (loss) income, net [Abstract]
Unrealized Gain (Loss) on Derivatives	($7,019)	$5,269
Interest and Dividend Income, Securities	259	316
Other Nonoperating Income (Expense)	1,205	931
Nonoperating (loss) Income	($5,555)	$6,516

Income_Taxes_Narrative_Details

Income Taxes (Narrative) (Details)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
	Rate	Rate
Income Tax Disclosure [Abstract]
Statutory federal rate	35.00%	35.00%

Income_Taxes_Income_Tax_Expens

Income Taxes (Income Tax Expense From Continuing Operations And Effective Tax Rate) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
	Rate	Rate
Income Tax Disclosure [Abstract]
Income tax expense from continuing operations	$28,427	$30,293
Effective tax rate	24.00%	24.00%

Contingencies_Details

Contingencies (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015
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