Citrix Systems (CTXS) 8-K 3 Nov 17 Other Events Financial data

Document and Entity Information

Document and Entity Information	12 Months Ended
	Dec. 31, 2016
Document And Entity Information [Abstract]
Document Type	8-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2016
Document Fiscal Year Focus	2,016
Trading Symbol	CTXS
Entity Registrant Name	CITRIX SYSTEMS INC
Entity Central Index Key	877,890

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 836,095	$ 310,756
Short-term investments, available-for-sale	726,923	502,852
Accounts receivable, net of allowances of $5,883 and $7,679 at December 31, 2016 and 2015, respectively	681,206	623,426
Inventories, net	12,522	10,521
Prepaid expenses and other current assets	124,842	119,669
Current assets of discontinued operations	179,689	116,727
Total current assets	2,561,277	1,683,951
Long-term investments, available-for-sale	980,142	891,814
Property and equipment, net	261,954	282,102
Goodwill	1,585,893	1,585,621
Other intangible assets, net	173,681	210,337
Deferred tax assets, net	233,900	207,194
Other assets	54,449	52,841
Long-term assets of discontinued operations	538,931	553,657
Total assets	6,390,227	5,467,517
Current liabilities:
Accounts payable	72,724	79,437
Accrued expenses and other current liabilities	256,799	281,881
Income taxes payable	39,771	17,807
Current portion of deferred revenues	1,208,229	1,139,543
Convertible notes, short-term	1,348,156
Current liabilities of discontinued operations	172,670	162,301
Total current liabilities	3,098,349	1,680,969
Long-term portion of deferred revenues	476,135	407,110
Convertible notes, long-term		1,311,071
Other liabilities	119,813	83,543
Long-term liabilities of discontinued operations	7,708	11,378
Commitments and contingencies
Temporary equity from Convertible notes	79,495
Stockholders' equity:
Preferred stock at $.01 par value: 5,000 shares authorized, none issued and outstanding	0	0
Common stock at $.001 par value: 1,000,000 shares authorized; 302,851 and 299,113 shares issued and outstanding at December 31, 2016 and 2015, respectively	303	299
Additional paid-in capital	4,761,588	4,566,919
Retained earnings	4,010,737	3,474,625
Accumulated other comprehensive loss	(28,704)	(28,527)
Stockholders' equity before treasury stock	8,743,924	8,013,316
Less-common stock in treasury, at cost (146,552 and 145,296 shares at December 31, 2016 and 2015, respectively)	(6,135,197)	(6,039,870)
Total stockholders' equity	2,608,727	1,973,446
Total liabilities, temporary equity and stockholders' equity	$ 6,390,227	$ 5,467,517

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Accounts receivable, allowance	$ 5,883	$ 7,679
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	1,000,000,000	1,000,000,000
Common stock, shares issued	302,851,000	299,113,000
Common stock, shares outstanding	302,851,000	299,113,000
Common stock in treasury, shares	146,552,000	145,296,000

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenues:
Product and licenses	$ 882,898	$ 873,808	$ 896,011
Software as a service	134,682	103,851	75,495
License updates and maintenance	1,587,271	1,521,007	1,416,017
Professional services	131,229	147,488	175,541
Total net revenues	2,736,080	2,646,154	2,563,064
Cost of net revenues:
Cost of product and license revenues	121,391	118,265	124,110
Cost of services and maintenance revenues	228,080	228,503	227,371
Amortization of product related intangible assets	54,290	71,001	89,230
Impairment of product related intangible assets	1,128	56,271	52,995
Total cost of net revenues	404,889	474,040	493,706
Gross margin	2,331,191	2,172,114	2,069,358
Operating expenses:
Research and development	395,373	480,957	486,919
Sales, marketing and services	976,339	1,005,802	1,074,958
General and administrative	314,298	286,245	276,565
Amortization of other intangible assets	15,076	30,341	35,583
Impairment of other intangible assets		67,137	6,321
Restructuring	67,401	98,661	14,092
Separation	2,540	179
Total operating expenses	1,771,027	1,969,322	1,894,438
Income from continuing operations	560,164	202,792	174,920
Interest income	16,686	11,675	9,421
Interest expense	(44,949)	(44,153)	(28,332)
Other expense, net	(4,131)	(5,730)	(7,694)
Income from continuing operations before income taxes	527,770	164,584	148,315
Income tax expense (benefit)	57,915	(50,549)	(18,904)
Income from continuing operations	469,855	215,133	167,219
Income from discontinued operations, net of income tax expense of $22,737, $43,065 and $42,887, respectively	66,257	104,228	84,504
Net income	$ 536,112	$ 319,361	$ 251,723
Basic earnings per share
Income from continuing operations	$ 3.03	$ 1.35	$ 0.98
Income from discontinued operations	0.43	0.66	0.50
Basic earnings per share	3.46	2.01	1.48
Diluted earnings per share:
Income from continuing operations	2.99	1.34	0.98
Income from discontinued operations	0.42	0.65	0.49
Diluted earnings per share	$ 3.41	$ 1.99	$ 1.47
Weighted average shares outstanding:
Basic	155,134	158,874	169,879
Diluted	157,084	160,362	171,270

Consolidated Statements of Inc5

Consolidated Statements of Income (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Statement [Abstract]
Discontinued operations, income tax expense	$ 22,737	$ 43,065	$ 42,887

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 536,112	$ 319,361	$ 251,723
Change in foreign currency translation adjustment			(21,804)
Available for sale securities:
Change in net unrealized gains (losses)	996	(2,080)	(911)
Less: reclassification adjustment for net (gains) losses included in net income	(1,204)	170	(1,317)
Net change (net of tax effect)	(208)	(1,910)	(2,228)
Gain (loss) on pension liability	906	4,083	(6,512)
Cash flow hedges:
Change in unrealized losses	(2,638)	(6,937)	(9,074)
Less: reclassification adjustment for net losses (gains) included in net income	1,763	13,027	(2,123)
Net change (net of tax effect)	(875)	6,090	(11,197)
Other comprehensive (loss) income	(177)	8,263	(41,741)
Comprehensive income	$ 535,935	$ 327,624	$ 209,982

Consolidated Statements of Equi

Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Common Stock in Treasury [Member]
Beginning balance at Dec. 31, 2013	$ 3,319,807	$ 291	$ 3,974,297	$ 2,903,541	$ 4,951	$ (3,563,273)
Beginning balance, shares at Dec. 31, 2013		291,078,000
Beginning balance, treasury shares at Dec. 31, 2013						(107,789,000)
Shares issued under stock-based compensation plans	46,621	$ 3	46,618
Shares issued under stock-based compensation plans, shares		3,031,000
Stock-based compensation expense	164,040		164,040
Common stock issued under employee stock purchase plan	33,909	$ 1	33,908
Common stock issued under employee stock purchase plan, shares		565,000
Tax deficiency from employer stock plans, net	(14,679)		(14,679)
Stock repurchases, net	(1,640,885)					$ (1,640,885)
Stock repurchases, shares						(25,549,000)
Restricted shares turned in for tax withholding	$ (33,672)					$ (33,672)
Restricted shares turned in for tax withholding, shares	(560,239)					(560,000)
Other comprehensive income (loss), net of tax	$ (41,741)				(41,741)
Convertible note tax impact	8,166		8,166
Equity component of convertible note issuance	162,869		162,869
Purchase of convertible note hedges	(184,288)		(184,288)
Issuance of warrants	101,775		101,775
Net income	251,723			251,723
Ending balance at Dec. 31, 2014	2,173,645	$ 295	4,292,706	3,155,264	(36,790)	$ (5,237,830)
Ending balance, shares at Dec. 31, 2014		294,674,000
Ending balance, treasury shares at Dec. 31, 2014						(133,898,000)
Shares issued under stock-based compensation plans	112,285	$ 3	112,282
Shares issued under stock-based compensation plans, shares		3,878,000
Stock-based compensation expense	139,816		139,816
Common stock issued under employee stock purchase plan	37,229	$ 1	37,228
Common stock issued under employee stock purchase plan, shares		561,000
Tax deficiency from employer stock plans, net	(15,013)		(15,013)
Stock repurchases, net	(755,704)					$ (755,704)
Stock repurchases, shares						(10,717,000)
Restricted shares turned in for tax withholding	$ (46,336)					$ (46,336)
Restricted shares turned in for tax withholding, shares	(679,694)					(681,000)
Other	$ (100)		(100)
Other comprehensive income (loss), net of tax	8,263				8,263
Net income	319,361			319,361
Ending balance at Dec. 31, 2015	$ 1,973,446	$ 299	4,566,919	3,474,625	(28,527)	$ (6,039,870)
Ending balance, shares at Dec. 31, 2015		299,113,000
Ending balance, treasury shares at Dec. 31, 2015	(145,296,000)					(145,296,000)
Shares issued under stock-based compensation plans	$ 41,247	$ 3	41,244
Shares issued under stock-based compensation plans, shares		3,009,000
Stock-based compensation expense	175,980		175,980
Common stock issued under employee stock purchase plan	57,515	$ 1	57,514
Common stock issued under employee stock purchase plan, shares		729,000
Tax deficiency from employer stock plans, net	(574)		(574)
Stock repurchases, net	(28,689)					$ (28,689)
Stock repurchases, shares						(426,000)
Restricted shares turned in for tax withholding	$ (66,638)					$ (66,638)
Restricted shares turned in for tax withholding, shares	(830,155)					(830,000)
Other comprehensive income (loss), net of tax	$ (177)				(177)
Equity component of convertible note issuance	(79,495)		(79,495)
Net income	536,112			536,112
Ending balance at Dec. 31, 2016	$ 2,608,727	$ 303	$ 4,761,588	$ 4,010,737	$ (28,704)	$ (6,135,197)
Ending balance, shares at Dec. 31, 2016		302,851,000
Ending balance, treasury shares at Dec. 31, 2016	(146,552,000)					(146,552,000)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating Activities
Net income	$ 536,112	$ 319,361	$ 251,723
Income from discontinued operations	(66,257)	(104,228)	(84,504)
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization and impairment of intangible assets	70,494	224,750	184,129
Depreciation and amortization of property and equipment	107,954	102,207	92,151
Amortization of debt discount and transaction costs	37,085	36,013	23,293
Stock-based compensation expense	152,739	128,262	153,942
Deferred income tax benefit	(21,654)	(85,235)	(39,056)
Excess tax benefit from stock-based compensation	(16,049)	(5,873)	(6,132)
Effects of exchange rate changes on monetary assets and liabilities denominated in foreign currencies	5,189	13,815	5,233
Other non-cash items	8,618	6,767	12,066
Total adjustments to reconcile net income to net cash provided by operating activities	344,376	420,706	425,626
Changes in operating assets and liabilities, net of the effects of acquisitions:
Accounts receivable	(61,662)	(8,866)	(28,142)
Inventories	(4,133)	703	(1,167)
Prepaid expenses and other current assets	(12,077)	(10,257)	(4,621)
Other assets	(2,747)	(1,487)	1,650
Income taxes, net	42,431	48,675	(84,629)
Accounts payable	(16,365)	6,408	1,338
Accrued expenses and other current liabilities	22,650	49,662	66,674
Deferred revenues	142,381	102,330	144,644
Other liabilities	22,459	8,900	5,827
Total changes in operating assets and liabilities, net of the effects of acquisitions	132,937	196,068	101,574
Net cash provided by operating activities of continuing operations	947,168	831,907	694,419
Net cash provided by operating activities of discontinued operations	168,662	202,641	151,562
Net cash provided by operating activities	1,115,830	1,034,548	845,981
Investing Activities
Purchases of available-for-sale investments	(2,238,784)	(2,182,681)	(2,389,950)
Proceeds from sales of available-for-sale investments	1,294,636	1,745,290	1,694,886
Proceeds from maturities of available-for-sale investments	632,517	637,052	406,334
Proceeds from cost method investments, net	920	6,476	425
Purchases of property and equipment	(85,035)	(97,566)	(124,610)
Cash paid for acquisitions, net of cash acquired	(13,242)	(95,331)	(101,059)
Cash paid for licensing agreements and product related intangible assets	(25,940)	(10,795)	(13,419)
Other	261	(1,267)
Net cash (used in) provided by investing activities of continuing operations	(434,667)	1,178	(527,393)
Net cash used in investing activities of discontinued operations	(49,537)	(225,593)	(42,064)
Net cash used in investing activities	(484,204)	(224,415)	(569,457)
Financing Activities
Proceeds from issuance of common stock under stock-based compensation plans	41,247	112,285	46,618
Proceeds from issuance of convertible notes, net of issuance costs			1,415,717
Purchase of convertible note hedges			(184,288)
Proceeds from issuance of warrants			101,775
Proceeds from revolving credit facility		95,000
Repayments on credit facility		(95,000)
Repayment of acquired debt		(3,175)	(4,065)
Excess tax benefit from stock-based compensation	16,049	5,873	6,132
Stock repurchases, net	(28,689)	(755,704)	(1,640,885)
Cash paid for tax withholding on vested stock awards	(66,638)	(46,336)	(33,672)
Net cash used in financing activities of continuing operations	(38,031)	(687,057)	(292,668)
Net cash used in financing activities of discontinued operations		(4,394)
Net cash used in financing activities	(38,031)	(691,451)	(292,668)
Effect of exchange rate changes on cash and cash equivalents	(5,157)	(10,313)	(4,447)
Change in cash and cash equivalents	588,438	108,369	(20,591)
Cash and cash equivalents at beginning of period, including cash of discontinued operations of $57,762, $34,651 and $56,091, respectively	368,518	260,149	280,740
Cash and cash equivalents at end of period	956,956	368,518	260,149
Less cash of discontinued operations	(120,861)	(57,762)	(34,651)
Cash and cash equivalents at end of period	836,095	310,756	225,498
Supplemental Cash Flow Information
Cash paid for income taxes	64,361	45,827	130,502
Cash paid for interest	$ 7,847	$ 8,215	$ 5,027

Consolidated Statements of Cas9

Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Cash Flows [Abstract]
Cash of discontinued operations	$ 57,762	$ 34,651	$ 56,091

Organization

Organization	12 Months Ended
	Dec. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	1. ORGANIZATION Citrix Systems, Inc. (“Citrix” or the “Company”), is a Delaware corporation founded on April 17, 1989. Citrix delivers solutions to make applications secure and easy to access, anywhere, anytime and on any device or network. Citrix markets and licenses its products directly to customers, over the Web, and through systems integrators (“SIs”), in addition to indirectly through value-added resellers (“VARs”), value-added distributors (“VADs”), original equipment manufacturers (“OEMs”), and service providers. On January 31, 2017, Citrix Systems, Inc. (the “Company”) completed the spin-off “Spin-off”) The Company’s revenues are derived from sales of its Workspace Services products, Delivery Networking products, Cloud Services offerings and related License updates and maintenance and Professional services. Prior to the Spin-off, Spin-off, In these consolidated financial statements, unless otherwise indicated, references to Citrix and the Company, refer to Citrix Systems, Inc. and its consolidated subsidiaries after giving effect to the Spin-off. Spin-off, Spin-off

Significant Accounting Policies

Significant Accounting Policies	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Significant Accounting Policies	2. SIGNIFICANT ACCOUNTING POLICIES Consolidation Policy The consolidated financial statements of the Company include the accounts of its wholly-owned subsidiaries in the Americas, Europe, the Middle East and Africa (“EMEA”) and Asia-Pacific. All significant transactions and balances between the Company and its subsidiaries have been eliminated in consolidation. Cash and Cash Equivalents Cash and cash equivalents at December 31, 2016 and 2015 include marketable securities, which are primarily money market funds, commercial paper, agency, and government securities, municipal securities and corporate securities with initial or remaining contractual maturities when purchased of three months or less. Available-for-sale Short-term and long-term investments at December 31, 2016 and 2015 primarily consist of agency securities, corporate securities, municipal securities and government securities. Investments classified as available-for-sale available-for-sale non-current available-for-sale The Company’s investment policy is designed to limit exposure to any one issuer depending on credit quality. The Company uses information provided by third parties to adjust the carrying value of certain of its investments to fair value at the end of each period. Fair values are based on a variety of inputs and may include interest rates, known historical trades, yield curve information, benchmark data, prepayment speeds, credit quality and broker/dealer quotes. See Note 4 for investment information. Accounts Receivable The Company’s accounts receivable are attributable primarily to direct sales to end customers via the Web or through independent software vendors, or ISVs, in addition to indirectly through value-added resellers, or VARs, value-added distributors, or VADs, systems integrators, or SIs, original equipment manufacturers, or OEMs and service providers. Collateral is generally not required. The Company also maintains allowances for doubtful accounts for estimated losses resulting from the inability of the Company’s customers to make payments which includes both general and specific reserves. The Company periodically reviews these estimated allowances by conducting an analysis of the customer’s payment history and credit worthiness, the age of the trade receivable balances and current economic conditions that may affect a customer’s ability to make payments. Based on this review, the Company specifically reserves for those accounts deemed uncollectible. When receivables are determined to be uncollectible, principal amounts of such receivables outstanding are deducted from the allowance. The allowance for doubtful accounts was $3.9 million and $6.2 million as of December 31, 2016 and 2015, respectively. If the financial condition of a significant distributor or customer were to deteriorate, the Company’s operating results could be adversely affected. As of December 31, 2016, two distributors, the Arrow Group and Ingram Micro, accounted for 14% and 10% of gross accounts receivable, respectively. As of December 31, 2015, there was no individual customer that accounted for over 10% of gross accounts receivable. Inventory Inventories are stated at the lower of cost or market on a standard cost basis, which approximates actual cost. The Company’s inventories primarily consist of finished goods as of December 31, 2016 and 2015. Property and Equipment Property and equipment is stated at cost. Depreciation is computed using the straight-line method over the estimated useful lives of the assets, which is generally three years for computer equipment and software, the lesser of the lease term or ten years for leasehold improvements, which is the estimated useful life, seven years for office equipment and furniture and the Company’s enterprise resource planning system and 40 years for buildings. During 2016 and 2015, the Company retired $118.0 million and $18.3 million, respectively, in property and equipment that were no longer in use. At the time of retirement, the remaining net book value of the assets retired was not material and no material asset retirement obligations were associated with them. Property and equipment consist of the following: December 31, 2016 2015 (In thousands) Buildings $ 76,152 $ 76,152 Computer equipment 170,252 227,079 Software 350,195 309,583 Equipment and furniture 71,182 78,201 Leasehold improvements 164,090 178,228 831,871 869,243 Less: accumulated depreciation and amortization (602,433 ) (613,796 ) Assets under construction 15,747 9,886 Land 16,769 16,769 Total $ 261,954 $ 282,102 Long-Lived Assets The Company reviews for impairment of long-lived assets and certain identifiable intangible assets to be held and used whenever events or changes in circumstances indicate that the carrying amount of such assets may not be fully recoverable. Determination of recoverability is based on an estimate of undiscounted future cash flows resulting from the use of the asset and its eventual disposition. Measurement of an impairment loss is based on the fair value of the asset compared to its carrying value. Long-lived assets and certain identifiable intangible assets to be disposed of are reported at the lower of carrying amount or fair value less costs to sell. For the year ended December 31, 2015, the Company identified certain intangible assets that were impaired and recorded non-cash non-recurring Goodwill The Company accounts for goodwill in accordance with the authoritative guidance, which requires that goodwill and certain intangible assets are not amortized, but are subject to an annual impairment test. As part of its continued transformation, effective January 1, 2016, the Company reorganized a part of its business by creating a new Cloud product grouping. In connection with this change, during the fourth quarter of 2016, the Company performed an assessment of its goodwill reporting units and determined that the reorganization resulted in the identification of two goodwill reporting units (excluding the GoTo Business). There was no impairment of goodwill or indefinite lived intangible assets as a result of the annual impairment analysis completed during the fourth quarters of 2016 and 2015, respectively. The authoritative guidance provides entities with an option to perform a qualitative assessment to determine whether further quantitative impairment testing is necessary. The Company performed the qualitative assessment when it performed its goodwill impairment test in the fourth quarter of 2016. As a result of the qualitative analysis, no further quantitative impairment test was deemed necessary. See Note 3 for more information regarding the Company’s acquisitions and Note 11 for more information regarding the Company’s segments. On January 31, 2017, Citrix completed the separation of the GoTo Business. As a result, the Company re-evaluated The following table presents the change in goodwill during 2016 and 2015 (in thousands): Balance at Additions Other Balance at Balance at Additions Other Balance at Goodwill $ 1,585,621 $ 897 (1 ) $ (625 ) (2) $ 1,585,893 $ 1,519,436 $ 66,925 (3) $ (740 ) (4) $ 1,585,621 (1) Amount relates to preliminary purchase price allocation of goodwill associated with the 2016 business combination. See Note 3 for more information regarding the Company’s acquisitions. (2) Amount relates to goodwill associated with the sale of the Company’s CloudPlatform and CloudPortal Business Manager products and to adjustments to the preliminary purchase price allocation associated with 2015 acquisitions. See Note 3 for more information regarding the Company’s acquisitions and divestitures. (3) Amount primarily relates to 2015 acquisitions. See Note 3 for more information regarding the Company’s acquisitions. (4) Amount primarily relates to adjustments to purchase price allocations for certain acquisitions. Intangible Assets The Company has intangible assets which were primarily acquired in conjunction with business combinations and technology purchases. Intangible assets with finite lives are recorded at cost, less accumulated amortization. Amortization is computed over the estimated useful lives of the respective assets, generally three to seven years, except for patents, which are amortized over the lesser of their remaining life or ten years. In-process in-process Intangible assets consist of the following (in thousands): December 31, 2016 Gross Accumulated Weighted- Product related intangible assets $ 647,594 $ 520,746 6.12 Other 223,692 176,859 6.54 Total $ 871,286 $ 697,605 6.23 December 31, 2015 Gross Carrying Accumulated Weighted- Product related intangible assets $ 518,499 $ 428,832 5.58 Other 337,979 217,309 5.37 Total $ 856,478 $ 646,141 5.64 Amortization and impairment of product related intangible assets, which consists primarily of product-related technologies and patents, was $55.4 million and $127.3 million for the year ended December 31, 2016 and 2015, respectively, and is classified as a component of Cost of net revenues in the accompanying consolidated statements of income. Amortization and impairment of other intangible assets, which consist primarily of customer relationships, trade names and covenants not to compete was $15.1 million and $97.5 million for the year ended December 31, 2016 and 2015, respectively, and is classified as a component of Operating expenses in the accompanying consolidated statements of income. The Company monitors its intangible assets for indicators of impairment. If the Company determines that an impairment has occurred, it will write-down the intangible asset to its fair value. For certain intangible assets where the unamortized balances exceed the undiscounted future net cash flows, the Company measures the amount of the impairment by calculating the amount by which the carrying values exceed the estimated fair values, which are based on projected discounted future net cash flows. During the year ended December 31, 2015, the Company tested certain intangible assets for recoverability due to changes in facts and circumstances associated with the shift in strategic focus and reduced profitability expectations. As a result, due to disruptions in the business as a result of the announced plan to explore strategic alternatives, the Company identified certain definite-lived intangible assets, primarily customer relationships from the acquisition of ByteMobile, that were impaired and recorded non-cash non-recurring Estimated future amortization expense of intangible assets with finite lives as of December 31, 2016 is as follows (in thousands): Year ending December 31, 2017 $ 53,848 2018 48,455 2019 27,829 2020 14,061 2021 7,923 Thereafter 21,565 Total $ 173,681 Software Development Costs The authoritative guidance requires certain internal software development costs related to software to be sold to be capitalized upon the establishment of technological feasibility. The Company’s software development costs incurred subsequent to achieving technological feasibility have not been significant and substantially all software development costs have been expensed as incurred. Internal Use Software In accordance with the authoritative guidance, the Company capitalizes external direct costs of materials and services and internal costs such as payroll and benefits of those employees directly associated with the development of new functionality in internal use software. The amount of costs capitalized in 2016 and 2015 relating to internal use software was $29.2 million and $32.4 million, respectively. These costs are being amortized over the estimated useful life of the software, which is generally three to seven years, and are included in property and equipment in the accompanying consolidated balance sheets. The total amounts charged to expense relating to internal use software was approximately $37.8 million, $36.1 million and $30.9 million, during the years ended December 31, 2016, 2015 and 2014, respectively. The Company capitalized costs related to internally developed computer software to be sold as a service related to its Cloud Services products, incurred during the application development stage, of $18.2 million and $16.3 million, during the years ended December 31, 2016 and December 31, 2015, respectively, and is amortizing these costs over the expected lives of the related services, which is generally two years, and are included in property and equipment in the accompanying consolidated balance sheets. The total amounts charged to expense relating to internally developed computer software to be sold as a service was approximately $16.8 million, $9.2 million and $5.5 million, during the years ended December 31, 2016, 2015 and 2014, respectively. Revenue Recognition Net revenues include the following categories: Product and licenses, SaaS, License updates and maintenance and Professional services. Product and licenses revenues primarily represent fees related to the licensing of the Company’s software and hardware appliances. These revenues are reflected net of sales allowances, cooperative advertising agreements, partner incentive programs and provisions for returns. SaaS revenues consist primarily of fees related to online service agreements, which are recognized ratably over the contract term, which is typically 12 months. In addition, SaaS revenues may also include set-up add-on The Company recognizes revenue when it is earned and when all of the following criteria are met: (1) persuasive evidence of the arrangement exists; (2) delivery has occurred or the service has been provided and the Company has no remaining obligations; (3) the fee is fixed or determinable; and (4) collectability is probable. The majority of the Company’s product and license revenue consists of revenue from the sale of software products. Software sales generally include a perpetual license to the Company’s software and is subject to the industry specific software revenue recognition guidance. In accordance with this guidance, the Company allocates revenue to license updates related to its stand-alone software and any other undelivered elements of the arrangement based on vendor specific objective evidence (“VSOE”) of fair value of each element and such amounts are deferred until the applicable delivery criteria and other revenue recognition criteria described above have been met. The balance of the revenues, net of any discounts inherent in the arrangement, is recognized at the outset of the arrangement using the residual method as the product licenses are delivered. If management cannot objectively determine the fair value of each undelivered element based on VSOE of fair value, revenue recognition is deferred until all elements are delivered, all services have been performed, or until fair value can be objectively determined. For hardware appliance and software transactions, the arrangement consideration is allocated to stand-alone software deliverables as a group and the non-software The Citrix Service Provider (“CSP”) program provides subscription-based services in which the CSP partners host software services to their end users. The fees from the CSP program are recognized based on usage and as the CSP services are provided to their end users. For the Company’s non-software The Company’s Cloud Services offerings are considered hosted service arrangements per the authoritative guidance, or SaaS. In the normal course of business, the Company is not obligated to accept product returns from its distributors under any conditions, unless the product item is defective in manufacture. The Company establishes provisions for estimated returns, as well as other sales allowances, concurrently with the recognition of revenue. The provisions are established based upon consideration of a variety of factors, including, among other things, recent and historical return rates for both specific products and distributors and the impact of any new product releases and projected economic conditions. Product returns are provided for in the consolidated financial statements and have historically been within management’s expectations. Allowances for estimated product returns amounted to approximately $2.0 million and $1.4 million at December 31, 2016 and December 31, 2015, respectively. The Company also records estimated reductions to revenue for customer programs and incentive offerings including volume-based incentives. The Company could take actions to increase its customer incentive offerings, which could result in an incremental reduction to revenue at the time the incentive is offered. Product Concentration The Company derives a substantial portion of its revenues from its Workspace Services solutions, which include its XenDesktop and XenApp products and related services, and anticipates that these products and future derivative products and product lines based upon this technology will continue to constitute a majority of its revenue. The Company could experience declines in demand for its Workspace Services solutions and other products, whether as a result of general economic conditions, the delay or reduction in technology purchases, new competitive product releases, price competition, lack of success of its strategic partners, technological change or other factors. Additionally, the Company’s Delivery Networking products generate revenues from a limited number of customers. As a result, if the Delivery Networking product grouping loses certain customers or one or more such customers significantly decreases its orders, the Company’s business, results of operations and financial condition could be adversely affected. Cost of Net Revenues Cost of product and license revenues consists primarily of hardware, shipping expense, royalties, product media and duplication, manuals and packaging materials. In addition, the Company is a party to licensing agreements with various entities, which give the Company the right to use certain software code in its products or in the development of future products in exchange for the payment of fixed fees or amounts based upon the sales of the related product. The licensing agreements generally have terms ranging from one to five years, and generally include renewal options. However, some agreements are perpetual unless expressly terminated. Royalties and other costs related to these agreements are also included in Cost of net revenues. Cost of services and maintenance revenues consists primarily of compensation and other personnel-related costs of providing technical support and consulting, as well as the costs related to providing the Company’s software as a service offerings. Also included in Cost of net revenues is amortization of product related intangible assets and impairment of product related intangible assets. Foreign Currency The functional currency for all of the Company’s wholly-owned foreign subsidiaries is the U.S. dollar. Monetary assets and liabilities of such subsidiaries are remeasured into U.S. dollars at exchange rates in effect at the balance sheet date, and revenues and expenses are remeasured at average rates prevailing during the year. Effective January 1, 2015, the functional currency of the Company’s wholly-owned foreign subsidiaries became the U.S. dollar as a result of a reorganization in the foreign subsidiaries’ operations. Prior to January 1, 2015, the functional currency of the Company’s wholly-owned foreign subsidiaries was the currency of the country in which each subsidiary is located. The Company translated assets and liabilities of these foreign subsidiaries at exchange rates in effect at the balance sheet date and included accumulated net translation adjustments in equity as a component of Accumulated other comprehensive loss. The change in functional currency is applied on a prospective basis, therefore any gains and losses that were previously recorded in Accumulated other comprehensive loss remain unchanged from January 1, 2015. Foreign currency transaction gains and losses are the result of exchange rate changes on transactions denominated in currencies other than the functional currency, including U.S. dollars. The remeasurement of those foreign currency transactions is included in determining net income or loss for the period of exchange. Derivatives and Hedging Activities In accordance with the authoritative guidance, the Company records derivatives at fair value as either assets or liabilities on the balance sheet. For derivatives that are designated as and qualify as effective cash flow hedges, the portion of gain or loss on the derivative instrument effective at offsetting changes in the hedged item is reported as a component of Accumulated other comprehensive loss and reclassified into earnings as operating expense, net, when the hedged transaction affects earnings. Derivatives not designated as hedging instruments are adjusted to fair value through earnings as Other expense, net, in the period during which changes in fair value occur. The application of the authoritative guidance could impact the volatility of earnings. The Company formally documents all relationships between hedging instruments and hedged items, as well as its risk-management objective and strategy for undertaking various hedge transactions. This process includes attributing all derivatives that are designated as cash flow hedges to floating rate assets or liabilities or forecasted transactions. The Company also formally assesses, both at the inception of the hedge and on an ongoing basis, whether each derivative is highly effective in offsetting changes in cash flows of the hedged item. Fluctuations in the value of the derivative instruments are generally offset by changes in the hedged item; however, if it is determined that a derivative is not highly effective as a hedge or if a derivative ceases to be a highly effective hedge, the Company will discontinue hedge accounting prospectively for the affected derivative. The Company is exposed to risk of default by its hedging counterparties. Although this risk is concentrated among a limited number of counterparties, the Company’s foreign exchange hedging policy attempts to minimize this risk by placing limits on the amount of exposure that may exist with any single financial institution at a time. Pension Liability The Company provides retirement benefits to certain employees who are not U.S. based. Generally, benefits under these programs are based on an employee’s length of service and level of compensation. The majority of these programs are commonly referred to as termination indemnities, which provide retirement benefits in accordance with programs mandated by the governments of the countries in which such employees work. The Company had accrued $13.2 million and $13.8 million for these pension liabilities at December 31, 2016 and 2015, respectively. Expenses for the programs for 2016, 2015 and 2014 amounted to $2.5 million, $3.8 million and $3.2 million, respectively. Advertising Costs The Company expenses advertising costs as incurred. The Company has advertising agreements with, and purchases advertising from, online media providers to advertise its products. The Company also has cooperative advertising agreements with certain distributors and resellers whereby the Company will reimburse distributors and resellers for qualified advertising of Company products. Reimbursement is made once the distributor, reseller or provider provides substantiation of qualified expenses. The Company estimates the impact of these expenses and recognizes them at the time of product sales as a reduction of net revenue in the accompanying consolidated statements of income. The total costs the Company recognized related to advertising were approximately $72.8 million, $70.7 million and $63.6 million, during the years ended December 31, 2016, 2015 and 2014, respectively. Income Taxes The Company and one or more of its subsidiaries is subject to United States federal income taxes, as well as income taxes of multiple state and foreign jurisdictions. The Company is currently not subject to a U.S. federal income tax examination. With few exceptions, the Company is no longer subject to U.S., federal, state and local, or non-U.S. In the ordinary course of global business, there are transactions for which the ultimate tax outcome is uncertain; thus, judgment is required in determining the worldwide provision for income taxes. The Company provides for income taxes on transactions based on its estimate of the probable liability. The Company adjusts its provision as appropriate for changes that impact its underlying judgments. Changes that impact provision estimates include such items as jurisdictional interpretations on tax filing positions based on the results of tax audits and general tax authority rulings. Due to the evolving nature of tax rules combined with the large number of jurisdictions in which the Company operates, estimates of its tax liability and the realizability of its deferred tax assets could change in the future, which may result in additional tax liabilities and adversely affect the Company’s results of operations, financial condition and cash flows. The Company is required to estimate its income taxes in each of the jurisdictions in which it operates as part of the process of preparing its consolidated financial statements. The authoritative guidance requires a valuation allowance to reduce the deferred tax assets reported if, based on the weight of the evidence, it is more likely than not that some portion or all of the deferred tax assets will not be realized. The Company reviews deferred tax assets periodically for recoverability and makes estimates and judgments regarding the expected geographic sources of taxable income and gains from investments, as well as tax planning strategies in assessing the need for a valuation allowance. Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Significant estimates made by management include the provision for doubtful accounts receivable, the provision to reduce obsolete or excess inventory to market, the provision for estimated returns, as well as sales allowances, the assumptions used in the valuation of stock-based awards, the assumptions used in the discounted cash flows to mark certain of its investments to market, the valuation of the Company’s goodwill, net realizable value of product related and other intangible assets, the fair value of convertible senior notes, the provision for lease losses, the provision for income taxes and the amortization and depreciation periods for intangible and long-lived assets. While the Company believes that such estimates are fair when considered in conjunction with the consolidated financial position and results of operations taken as a whole, the actual amounts of such items, when known, will vary from these estimates. Accounting for Stock-Based Compensation Plans The Company has various stock-based compensation plans for its employees and outside directors and accounts for stock-based compensation arrangements in accordance with the authoritative guidance, which requires the Company to measure and record compensation expense in its consolidated financial statements using a fair value method. See Note 7 for further information regarding the Company’s stock-based compensation plans. Earnings per Share Basic earnings per share is calculated by dividing income available to stockholders by the weighted-average number of common shares outstanding during each period. Diluted earnings per share is computed using the weighted average number of common and dilutive common share equivalents outstanding during the period. Dilutive common share equivalents consist of shares issuable upon the vesting or exercise of stock awards (calculated using the treasury stock method) during the period they were outstanding. Certain shares under the Company’s stock-based compensation programs were excluded from the computation of diluted earnings per share due to their anti-dilutive effect for the respective periods in which they were outstanding. Additionally, the computation of diluted earnings per share does not include the effect of the potential outstanding common stock from the Company’s convertible senior notes and warrants because the effect would have been anti-dilutive. The reconciliation of the numerator and denominator of the earnings per share calculation is presented in Note 15. Reclassifications Certain reclassifications of the prior years’ amounts have been made to conform to the current year’s presentation.

Acquisitions and Divestitures

Acquisitions and Divestitures	12 Months Ended
	Dec. 31, 2016
Business Combinations [Abstract]
Acquisitions and Divestitures	3. ACQUISITIONS AND DIVESTITURES 2016 Business Combination On September 7, 2016, the Company acquired all of the issued and outstanding securities of a privately held company. The acquisition provides a software solution that cuts the cost of desktop and application virtualization and delivers workspace performance by accelerating desktop logon and application response times for any Microsoft Windows-based environment. The total cash consideration for this transaction was approximately $11.5 million, net of $0.8 million cash acquired. Transaction costs of $0.4 million are presented within General and administrative expense in the accompanying consolidated statements of income. The assets related to this acquisition relate primarily to $8.2 million of product technology identifiable intangible assets with a 4 year life and goodwill of $4.7 million. 2016 Asset Acquisition On January 8, 2016, the Company acquired certain monitoring technology assets from a privately-held company for total cash consideration of $23.6 million. The acquisition provides a monitoring solution for Citrix’s products as it relates to Microsoft Windows applications and desktop delivery. The identifiable intangible assets acquired related primarily to product technologies. 2016 Divestiture On February 29, 2016, the Company sold its CloudPlatform and CloudPortal Business Manager products to Persistent Telecom Solutions, Inc. The agreement included contingent consideration in the form of an earnout provision based on revenue for a period of five years following the closing date. Any income associated with the contingent consideration will be recognized if the earnout provisions are met. No earnout provisions were met during the year ended December 31, 2016. 2015 Acquisitions Sanbolic On January 8, 2015, the Company acquired all of the issued and outstanding securities of Sanbolic, Inc. (“Sanbolic”). The Company expected the Sanbolic technology would reduce the complexity of Microsoft Windows application delivery and desktop virtualization deployments. The total cash consideration for this transaction was approximately $89.4 million, net of $0.2 million cash acquired. Transaction costs associated with the acquisition were $0.5 million, of which the Company expensed $0.3 million during the year ended December 31, 2015, and are included in General and administrative expense in the accompanying consolidated statements of income. In addition, in connection with the acquisition, the Company assumed non-vested non-core

Investments

Investments	12 Months Ended
	Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Investments	4. INVESTMENTS Available-for-sale Investments in available-for-sale December 31, 2016 December 31, 2015 Description of the Securities Amortized Gross Gross Fair Value Amortized Gross Gross Fair Value Agency securities $ 411,963 $ 699 $ (1,169 ) $ 411,493 $ 530,981 $ 757 $ (1,216 ) $ 530,522 Corporate securities 842,887 193 (2,114 ) 840,966 699,060 90 (1,929 ) 697,221 Municipal securities 9,989 3 (4 ) 9,988 14,872 14 (8 ) 14,878 Government securities 445,083 135 (600 ) 444,618 152,376 9 (340 ) 152,045 Total $ 1,709,922 $ 1,030 $ (3,887 ) $ 1,707,065 $ 1,397,289 $ 870 $ (3,493 ) $ 1,394,666 The change in net unrealized (losses) gains on available-for-sale available-for-sale The average remaining maturities of the Company’s short-term and long-term available-for-sale Realized Gains and Losses on Available-for-sale For the years ended December 31, 2016 and 2015, the Company had realized gains on the sales of available-for-sale available-for-sale available-for-sale The Company continues to monitor its overall investment portfolio and if the credit ratings of the issuers of its investments deteriorate or if the issuers experience financial difficulty, including bankruptcy, the Company may be required to make adjustments to the carrying value of the securities in its investment portfolio and recognize impairment charges for declines in fair value that are determined to be other-than-temporary. Unrealized Losses on Available-for-Sale The gross unrealized losses on the Company’s available-for-sale Cost Method Investments The Company held direct investments in privately-held companies of approximately $19.2 million and $19.4 million as of December 31, 2016 and 2015, respectively, which are accounted for based on the cost method and are included in Other assets in the accompanying consolidated balance sheets. The Company periodically reviews these investments for impairment. If the Company determines that an other-than-temporary impairment has occurred, it will write-down the investment to its fair value. The Company determined that certain cost method investments were impaired during 2016, 2015 and 2014 and recorded a total charge of $1.1 million, $3.3 million, and $8.3 million, respectively, which is included in Other expense, net in the accompanying consolidated statements of income. During 2016, 2015 and 2014, certain companies in which the Company held direct investments were acquired by third parties and as a result of these sales transactions the Company recorded gains of $1.7 million, $8.7 million and 2.9 million, respectively, which was included in Other expense, net in the accompanying consolidated statements of income. See Note 5 for more information.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2016
Fair Value Disclosures [Abstract]
Fair Value Measurements	5. FAIR VALUE MEASUREMENTS The authoritative guidance defines fair value as an exit price, representing the amount that would either be received to sell an asset or be paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability. As a basis for considering such assumptions, the guidance establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value as follows: • Level 1. • Level 2 • Level 3 Available-for-sale available-for-sale Available-for-sale The Company’s assessment of the significance of a particular input to the fair value measurement requires judgment and may affect the classification of assets and liabilities within the fair value hierarchy. In certain instances, the inputs used to measure fair value may meet the definition of more than one level of the fair value hierarchy. The input with the lowest level priority is used to determine the applicable level in the fair value hierarchy. Assets and Liabilities Measured at Fair Value on a Recurring Basis As of December 31, Quoted Prices In Significant Significant (in thousands) Assets: Cash and cash equivalents: Cash $ 528,637 $ 528,637 $ — $ — Money market funds 224,765 224,765 — — Corporate securities 82,693 — 82,693 — Available-for-sale Agency securities 411,493 — 411,493 — Corporate securities 840,966 — 839,968 998 Municipal securities 9,988 — 9,988 — Government securities 444,618 — 444,618 — Prepaid expenses and other current assets: Foreign currency derivatives 2,506 — 2,506 — Total assets $ 2,545,666 $ 753,402 $ 1,791,266 $ 998 Accrued expenses and other current liabilities: Foreign currency derivatives 4,435 — 4,435 — Total liabilities $ 4,435 $ — $ 4,435 $ — As of December 31, Quoted Prices In Significant Significant (in thousands) Assets: Cash and cash equivalents: Cash $ 204,200 $ 204,200 $ — $ — Money market funds 102,968 102,968 — — Corporate securities 3,588 — 3,588 — Available-for-sale Agency securities 530,522 — 530,522 — Corporate securities 697,221 — 695,809 1,412 Municipal securities 14,878 — 14,878 — Government securities 152,045 — 152,045 — Prepaid expenses and other current assets: Foreign currency derivatives 1,063 — 1,063 — Total assets $ 1,706,485 $ 307,168 $ 1,397,905 $ 1,412 Accrued expenses and other current liabilities: Foreign currency derivatives 3,678 — 3,678 — Total liabilities $ 3,678 $ — $ 3,678 $ — The Company’s fixed income available-for-sale A-/A3 AA-/Aa3. available-for-sale The Company measures its cash flow hedges, which are classified as Prepaid expenses and other current assets and Accrued expenses and other current liabilities, at fair value based on indicative prices in active markets (Level 2 inputs). Assets Measured at Fair Value on a Non-recurring During 2016, certain cost method investments with a combined carrying value of $1.2 million were determined to be impaired and written down to their fair values of $0.1 million, resulting in impairment charges of $1.1 million. During 2015, certain cost method investments with a combined carrying value of $3.4 million were determined to be impaired and have been written down to their fair values of $0.1 million resulting in impairment charges of $3.3 million. The impairment charges are included in Other expense, net in the accompanying consolidated statements of income for the years ended December 31, 2016 and 2015. In determining the fair value of cost method investments, the Company considers many factors including but not limited to operating performance of the investee, the amount of cash that the investee has on-hand, For certain intangible assets where the unamortized balances exceeded the undiscounted future net cash flows, the Company measures the amount of the impairment by calculating the amount by which the carrying values exceed the estimated fair values, which are based on projected discounted future net cash flows. These non-recurring Additional Disclosures Regarding Fair Value Measurements The carrying value of accounts receivable, accounts payable and accrued expenses approximate their fair value due to the short maturity of these items. As of December 31, 2016, the fair value of the Convertible Notes, which was determined based on inputs that are observable in the market (Level 2) based on the closing trading price per $100 as of the last day of trading for the year ended December 31, 2016, and carrying value of debt instruments (carrying value excludes the equity component of the Company’s Convertible Notes classified in equity) was as follows (in thousands): Fair Value Carrying Value Convertible Senior Notes $ 1,674,688 $ 1,348,156 See Note 12 for more information on the Convertible Notes.

Accrued Expenses and Other Curr

Accrued Expenses and Other Current Liabilities	12 Months Ended
	Dec. 31, 2016
Payables and Accruals [Abstract]
Accrued Expenses and Other Current Liabilities	6. ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES Accrued expenses consist of the following: December 31, 2016 2015 (In thousands) Accrued compensation and employee benefits $ 143,666 $ 161,411 Other accrued expenses 113,133 120,470 Total $ 256,799 $ 281,881

Employee Stock-based Compensati

Employee Stock-based Compensation and Benefit Plans	12 Months Ended
	Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Employee Stock-based Compensation and Benefit Plans	7. EMPLOYEE STOCK-BASED COMPENSATION AND BENEFIT PLANS Plans The Company’s stock-based compensation program is a long-term retention program that is intended to attract and reward talented employees and align stockholder and employee interests. As of December 31, 2016, the Company had one stock-based compensation plan under which it was granting equity awards. The Company is currently granting stock-based awards from its 2014 Equity Incentive Plan (the “2014 Plan”). In December 2014, the Company’s Board of Directors approved the 2015 Employee Stock Purchase Plan (the “2015 ESPP”), which was approved by stockholders at the Company’s Annual Meeting of Stockholders held on May 28, 2015. The 2015 ESPP has replaced the Company’s Amended and Restated 2005 Employee Stock Purchase Plan (as amended, the “2005 ESPP”). In connection with certain of the Company’s acquisitions, the Company has assumed certain plans from acquired companies. The Company’s Board of Directors has provided that no new awards will be granted under the Company’s acquired stock plans. The Company’s superseded and expired stock plans include the Amended and Restated 2005 Equity Incentive Plan and the 2005 ESPP. Under the terms of the 2014 Plan, the Company is authorized to grant incentive stock options (“ISOs”), non-qualified non-vested non-vested non-employee Non-vested Under the 2015 ESPP, all full-time and certain part-time employees of the Company are eligible to purchase common stock of the Company twice per year at the end of a six-month The Company used the Black-Scholes model to estimate the fair value of its Employee Stock Purchase Plan awards with the following weighted-average assumptions: Year Ended Year Ended December 31, 2016 December 31, 2015 Expected volatility factor 0.27-0.41 0.35 Risk free interest rate 0.25%-0.42 % 0.25 % Expected dividend yield 0 % 0 % Expected life (in years) 0.5 0.5 The Company determined the expected volatility factor by considering the implied volatility in six-month Expense Information under the Authoritative Guidance As required by the authoritative guidance, the Company estimates forfeitures of stock awards and recognizes compensation costs only for those awards expected to vest. Forfeiture rates are determined based on historical experience. The Company also considers whether there have been any significant changes in facts and circumstances that would affect its forfeiture rate quarterly. Estimated forfeitures are adjusted to actual forfeiture experience as needed. The Company recorded stock-based compensation costs, related deferred tax assets and tax benefits of $152.7 million, $53.5 million and $64.7 million, respectively, in 2016, $128.3 million, $40.2 million and $50.5 million, respectively, in 2015 and $153.9 million, $34.7 million and $39.8 million, respectively, in 2014. The detail of the total stock-based compensation recognized by income statement classification is as follows (in thousands): Income Statement Classifications 2016 2015 2014 Cost of services and maintenance revenues $ 2,179 $ 1,924 $ 1,890 Research and development 38,578 38,910 49,026 Sales, marketing and services 48,514 45,041 57,550 General and administrative 63,468 42,387 45,476 Total $ 152,739 $ 128,262 $ 153,942 Non-vested Performance, Market Performance and Service Condition Stock Units In January 2016, the Company granted its Chief Executive Officer 220,235 non-vested non-vested non-vested non-vested non-vested In March 2015 and 2014, the Company granted senior level employees non-vested non-vested non-vested non-vested non-vested non-vested non-vested non-vested non-vested The market condition requirements are reflected in the grant date fair value of the award, and the compensation expense for the award will be recognized assuming that the requisite service is rendered regardless of whether the market conditions are achieved. The grant date fair value of the non-vested March 2016 January 2016 March 2015 March 2014 Expected volatility factor 0.29 - 0.39 0.29 - 0.37 0.14 - 0.29 0.19 - 0.38 Risk free interest rate 0.91 % 1.10 % 0.85 % 0.81 % Expected dividend yield 0 % 0 % 0 % 0 % For the March 2016 and January 2016 grants, the range of expected volatilities utilized was based on the historical volatilities of the Company’s common stock and the average of its peer group. The Company chose to use historical volatility to value these awards because historical stock prices were used to develop the correlation coefficients between the Company and its peer group in order to model the stock price movements. The volatilities used were calculated over a 3.00 year period, which is commensurate with the awards’ performance period at the date of grant. The risk free interest rate was based on the implied yield available on U.S. Treasury zero-coupon For the March 2015 and March 2014 grants, the range of expected volatilities utilized was based on the historical volatilities of the Company’s common stock and the XCMP. The Company chose to use historical volatility to value these awards because historical stock prices were used to develop the correlation coefficients between the Company and the XCMP in order to model the stock price movements. The volatilities used were calculated over the most recent 2.76 year period, which is commensurate with the awards’ performance period at the date of grant. The risk free interest rate was based on the implied yield available on U.S. Treasury zero-coupon Service Based Stock Units The Company also awards senior level employees, certain other employees and new non-employee non-vested non-vested non-vested non-vested non-vested non-employee Performance Stock Units During 2015, the Company awarded certain senior level employees non-vested non-vested one-year non-vested non-vested non-vested non-vested non-vested The following table summarizes the Company’s non-vested Number Weighted-Average Non-vested 5,147,926 $ 65.00 Granted 2,538,589 76.27 Vested (2,472,217 ) 66.25 Forfeited (822,462 ) 65.59 Non-vested 4,391,836 70.67 For the years ended December 31, 2016, 2015 and 2014, the Company recognized stock-based compensation expense of $135.7 million, $117.9 million and $128.5 million, respectively, related to non-vested non-vested non-vested Non-vested During 2016 and 2015, the Company granted non-vested Non-vested Benefit Plan The Company maintains a 401(k) benefit plan allowing eligible U.S.-based employees to contribute up to 90% of their annual eligible earnings to the plan on a pretax and after-tax

Capital Stock

Capital Stock	12 Months Ended
	Dec. 31, 2016
Equity [Abstract]
Capital Stock	8. CAPITAL STOCK Stock Repurchase Programs The Company’s Board of Directors authorized an ongoing stock repurchase program with a total repurchase authority granted to the Company of $6.8 billion, of which $500.0 million was approved in January 2017. The Company may use the approved dollar authority to repurchase stock at any time until the approved amount is exhausted. The objective of the Company’s stock repurchase program is to improve stockholders’ returns. At December 31, 2016, approximately $404.0 million was available to repurchase common stock pursuant to the stock repurchase program. All shares repurchased are recorded as treasury stock. A portion of the funds used to repurchase stock over the course of the program was provided by net proceeds from the Convertible Notes offering, as well as proceeds from employee stock option exercises and the related tax benefit. The Company is authorized to make open market purchases of its common stock using general corporate funds through open market purchases, pursuant to a Rule 10b5-1 During the year ended December 31, 2016, the Company expended approximately $28.7 million on open market purchases under the stock repurchase program, repurchasing 426,300 shares of outstanding common stock at an average price of $67.30. During the year ended December 31, 2015, the Company expended approximately $755.7 million on open market purchases under the stock repurchase program, repurchasing 10,716,850 shares of outstanding common stock at an average price of $70.52. During the second quarter of 2014, the Company used a portion of the net proceeds from the Convertible Notes offering and existing cash and investments to repurchase an aggregate of approximately $1.5 billion of its common stock as authorized under the stock repurchase program. Of this $1.5 billion, the Company used approximately $101.0 million to purchase 1.7 million shares from certain purchasers of the Convertible Notes in privately negotiated transactions concurrently with the closing of the offering, and the remaining $1.4 billion to purchase additional shares of common stock under an Accelerated Share Repurchase (“ASR”) which the Company entered into with Citibank, N.A. (“Citibank”) on April 25, 2014 (the “ASR Agreement”). Under the ASR agreement, the Company paid $1.4 billion to Citibank upon consummation of the ASR and received, in the aggregate, approximately 21.8 million shares of its common stock from Citibank, including approximately 2.6 million shares delivered in October 2014 in final settlement in connection with Citibank’s election to accelerate the ASR. The total number of shares of common stock that the Company repurchased under the ASR Agreement was based on the average of the daily volume-weighted average prices of the common stock during the term of the ASR Agreement, less a discount. In addition to the repurchases described above, during the year ended December 31, 2014, the Company expended approximately $139.9 million on open market purchases under the stock repurchase program, repurchasing 2,046,400 shares of outstanding common stock at an average price of $68.36. Shares for Tax Withholding During the years ended December 31, 2016, 2015 and 2014, the Company withheld 830,155 shares, 679,694 shares and 560,239 shares, respectively, from equity awards that vested. Amounts withheld to satisfy minimum tax withholding obligations that arose on the vesting of equity awards was $66.6 million, $46.3 million and $33.7 million, for 2016, 2015 and 2014, respectively. These shares are reflected as treasury stock in the Company’s consolidated balance sheets and the related cash outlays do not reduce the Company’s total stock repurchase authority. Preferred Stock The Company is authorized to issue 5,000,000 shares of preferred stock, $0.01 par value per share. No shares of such preferred stock were issued and outstanding at December 31, 2016 or 2015.

Commitment and Contingencies

Commitment and Contingencies	12 Months Ended
	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitment and Contingencies	9. COMMITMENTS AND CONTINGENCIES Leases The Company leases certain office space and equipment under various operating leases. In addition to rent, the leases require the Company to pay for taxes, insurance, maintenance and other operating expenses. Certain of these leases contain stated escalation clauses while others contain renewal options. The Company recognizes rent expense on a straight-line basis over the term of the lease, excluding renewal periods, unless renewal of the lease is reasonably assured. Rental expense for the year ended December 31, 2016 totaled approximately $84.6 million, of which $28.9 million related to charges for the consolidation of leased facilities related to restructuring activities. Rental expense for the year ended December 31, 2015 totaled approximately $89.9 million, of which $22.1 million related to charges for the consolidation of leased facilities related to restructuring activities. Rental expense for the year ended December 31, 2014 totaled approximately $69.9 million. Sublease income for the years ended December 31, 2016, 2015 and 2014 was approximately $0.2 million, $0.2 million and $0.0 million, respectively. Lease commitments under non-cancelable non-cancelable Operating Sublease (In thousands) Years ending December 31, 2017 $ 55,097 $ 218 2018 48,952 204 2019 46,934 — 2020 39,959 — 2021 35,035 — Thereafter 141,659 — Total $ 367,636 $ 422 * Citrix will remain liable to the lessor for the duration of certain GoTo Business leases of approximately $6.8 million. The future operating lease obligation in the table above excludes approximately $16.6 million related to the GoTo Business, since Citrix completed the separation of the GoTo Business on January 31, 2017. Liabilities for Loss on Lease Obligations The Company recognizes liabilities for costs that will continue to be incurred under operating lease obligations for their remaining terms without economic benefit to the Company. The liabilities are measured and recorded at their fair values as of the cease-use The fair values of the liabilities are determined by discounting certain future cash flows related to the leases using a credit-adjusted risk-free interest rate as of the cease-use As of December 31, 2016, the Company’s liabilities for loss on lease obligations total approximately $37.6 million, of which approximately $33.2 million relates to the Company’s Santa Clara Office. The calculation of these liabilities requires judgment in estimating the timing of securing subleases for the vacant space, as well as the terms of possible subleases, including the length of the sublease periods, sublease rentals, rent concessions and other tenant incentives. While the Company believes that the assumptions used in the calculation of these liabilities are reasonable, due to the inherent uncertainties related to such assumptions, there can be no assurance that the Company will be able to secure such subleases within the timing assumed in its calculations, or at all, and with terms consistent with the assumptions used. In the Company’s Santa Clara office, if the price per square foot assumption were to change by $0.50, it would impact the estimate of sublease rentals, which would result in a change of $8.6 million to the liabilities for loss on lease obligation. Legal Matters The Company accrues a liability for legal contingencies when it believes that it is both probable that a liability has been incurred and that it can reasonably estimate the amount of the loss. The Company reviews these accruals and adjusts them to reflect ongoing negotiations, settlements, rulings, advice of legal counsel and other relevant information. To the extent new information is obtained and the Company’s views on the probable outcomes of claims, suits, assessments, investigations or legal proceedings change, changes in the Company’s accrued liabilities would be recorded in the period in which such determination is made. For the Other Matters referenced below, the amount of liability is not probable or the amount cannot be reasonably estimated; and, therefore, accruals have not been made. In addition, in accordance with the relevant authoritative guidance, for matters in which the likelihood of material loss is at least reasonably possible, the Company provides disclosure of the possible loss or range of loss. If a reasonable estimate cannot be made, however, the Company will provide disclosure to that effect. Due to the nature of the Company’s business, the Company is subject to patent infringement claims, including current suits against it or one or more of its wholly-owned subsidiaries alleging infringement by various Company products and services. The Company believes that it has meritorious defenses to the allegations made in its pending cases and intends to vigorously defend these lawsuits; however, it is unable currently to determine the ultimate outcome of these or similar matters or the potential exposure to loss, if any. In addition, the Company is a defendant in various litigation matters generally arising out of the normal course of business. Although it is difficult to predict the ultimate outcomes of these cases, the Company believes that it is not reasonably possible that the ultimate outcomes will materially and adversely affect its business, financial position, results of operations or cash flows. Guarantees The authoritative guidance requires certain guarantees to be recorded at fair value and requires a guarantor to make disclosures, even when the likelihood of making any payments under the guarantee is remote. For those guarantees and indemnifications that do not fall within the initial recognition and measurement requirements of the authoritative guidance, the Company must continue to monitor the conditions that are subject to the guarantees and indemnifications, as required under existing generally accepted accounting principles, to identify if a loss has been incurred. If the Company determines that it is probable that a loss has been incurred, any such estimable loss would be recognized. The initial recognition and measurement requirements do not apply to the provisions contained in the majority of the Company’s software license agreements that indemnify licensees of the Company’s software from damages and costs resulting from claims alleging that the Company’s software infringes the intellectual property rights of a third party. The Company has not made material payments pursuant to these provisions as of December 31, 2016. The Company has not identified any losses that are probable under these provisions and, accordingly, the Company has not recorded a liability related to these indemnification provisions. Purchase Obligations The Company has agreements with suppliers to purchase inventory and estimates its non-cancelable

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income Taxes	10. INCOME TAXES The United States and foreign components of income before income taxes are as follows: 2016 2015 2014 (In thousands) United States $ 59,344 $ (135,978 ) $ (39,323 ) Foreign 468,426 300,562 187,638 Total $ 527,770 $ 164,584 $ 148,315 The components of the provision for income taxes are as follows: 2016 2015 2014 (In thousands) Current: Federal $ 18,832 $ (12,450 ) $ (11,778 ) Foreign 52,978 40,613 28,126 State 7,759 6,523 3,804 Total current 79,569 34,686 20,152 Deferred: Federal (7,688 ) (69,104 ) (27,493 ) Foreign (3,139 ) (2,991 ) (1,298 ) State (10,827 ) (13,140 ) (10,265 ) Total deferred (21,654 ) (85,235 ) (39,056 ) Total provision $ 57,915 $ (50,549 ) $ (18,904 ) The following table presents the breakdown of net deferred tax assets: December 31, 2016 2015 (In thousands) Deferred tax assets $ 233,900 $ 207,194 Deferred tax liabilities (1,472 ) (2,240 ) Total net deferred tax assets $ 232,428 $ 204,954 The significant components of the Company’s deferred tax assets and liabilities consisted of the following: December 31, 2016 2015 (In thousands) Deferred tax assets: Accruals and reserves $ 41,094 $ 33,407 Deferred revenue 95,969 82,378 Tax credits 50,072 41,444 Net operating losses 41,986 50,143 Other 267 4,296 Stock based compensation 34,349 40,660 Transaction costs 557 511 Valuation allowance (14,156 ) (16,673 ) Total deferred tax assets 250,138 236,166 Deferred tax liabilities: Depreciation and amortization 1,933 (7,626 ) Acquired technology (8,524 ) (17,778 ) Prepaid expenses (11,119 ) (5,808 ) Total deferred tax liabilities (17,710 ) (31,212 ) Total net deferred tax assets $ 232,428 $ 204,954 The authoritative guidance requires a valuation allowance to reduce the deferred tax assets reported if it is not more likely than not that some portion or all of the deferred tax assets will be realized. At December 31, 2016, the Company determined a $14.2 million valuation allowance was necessary. The amount disclosed in the table above relates to deferred tax assets for net operating losses and tax credits that may not be realized. At December 31, 2016, the Company retained $92.1 million of remaining net operating loss carry forwards in the United States from acquisitions. The utilization of these net operating loss carry forwards are limited in any one year pursuant to Internal Revenue Code Section 382 and begin to expire in 2020. At December 31, 2016, the Company held $58.9 million of remaining net operating loss carry forwards in foreign jurisdictions that do not expire. At December 31, 2016, the Company had research and development tax credit carry forwards of $6.1 million that begin to expire in 2018. The Company does not expect to remit earnings from its foreign subsidiaries. All income earned abroad, except for previously taxed income for U.S. tax purposes is considered indefinitely reinvested in the Company’s non-U.S. A reconciliation of the Company’s effective tax rate to the statutory federal rate is as follows: Year Ended December 31, 2016 2015 2014 Federal statutory taxes 35.0 % 35.0 % 35.0 % State income taxes, net of federal tax benefit 0.8 (1.0 ) — Foreign operations (21.6 ) (41.1 ) (26.2 ) Permanent differences 3.2 13.9 8.0 Change in deferred tax liability related to acquired intangibles (0.8 ) (12.6 ) (10.9 ) Tax credits (7.9 ) (20.7 ) (21.4 ) Stock option compensation 0.3 0.8 3.4 Change in accruals for uncertain tax positions 2.2 (5.9 ) (1.8 ) Other (0.2 ) 0.9 1.2 11.0 % (30.7 )% (12.7 )% The Company’s effective tax rate generally differs from the U.S. federal statutory rate of 35% due primarily to lower tax rates on earnings generated by the Company’s foreign operations that are taxed primarily in Switzerland. The Company’s effective tax rate was approximately 11.0% and (30.7)% for the year ended December 31, 2016 and 2015, respectively. The increase in the effective tax rate when comparing the year ended December 31, 2016 to the year ended December 31, 2015 was primarily due to a change in the combination of income between the Company’s U.S. and foreign operations, the impact of discrete tax benefits related to the extension of the 2015 federal research and development tax credit and the impact of settling the Internal Revenue Service (“IRS”) examination for tax years 2011 and 2012 that closed during 2015. Specifically, during the quarter ended June 30, 2015, the IRS concluded its field examination, finalized tax adjustments primarily related to transfer pricing and the research and development tax credit, and formally closed the audit for the 2011 and 2012 tax years. Subsequently, during 2015 the Company recognized a net tax benefit of $20.3 million related to the IRS examination settlement. The decrease in the effective tax rate when comparing the year ended December 31, 2015 to the year ended December 31, 2014 was primarily due to a change in the combination of income between the Company’s U.S. and foreign operations, the decline in reserve for uncertain tax positions, the impact of discrete tax benefits related to the extension of the 2015 federal research and development tax credit, and the impairment of certain intangible assets. A reconciliation of the beginning and ending amount of unrecognized tax benefits for the years ended December 31, 2016 and 2015 is as follows (in thousands): Balance at January 1, 2015 $ 66,918 Additions based on tax positions related to the current year 6,613 Additions for tax positions of prior years 4,675 Reductions related to the expiration of statutes of limitations (9,521 ) Settlements (14,064 ) Balance at December 31, 2015 54,621 Additions based on tax positions related to the current year $ 11,588 Additions for tax positions of prior years 4,759 Reductions related to the expiration of statutes of limitations (1,167 ) Balance at December 31, 2016 $ 69,801 As of December 31, 2016 the Company is offsetting unrecognized tax benefits of $25.1 million against long-term deferred tax assets. All amounts included in this balance affect the annual effective tax rate. The Company recognizes interest accrued related to uncertain tax positions and penalties in income tax expense. As of the year ended December 31, 2016, the Company accrued $2.8 million for the payment of interest and penalties. The Company and one or more of its subsidiaries are subject to U.S. federal income taxes in the United States, as well as income taxes of multiple state and foreign jurisdictions. The Company is currently no longer subject to U.S. federal income tax examination. With some exceptions, the Company is generally not under examination for state and local income tax, or non-U.S.

Segment Information

Segment Information	12 Months Ended
	Dec. 31, 2016
Segment Reporting [Abstract]
Segment Information	11. SEGMENT INFORMATION The Company previously organized its operations into two reportable segments. As a result of the Spin-Off re-evaluated International revenues (sales outside of the United States) accounted for approximately 46.3%, 48.7% and 50.7% of the Company’s net revenues for the year ended December 31, 2016, 2015, and 2014, respectively. Long-lived assets consist of property and equipment, net, and are shown below. December 31, 2016 2015 (In thousands) Property and equipment, net: United States $ 197,077 $ 214,580 United Kingdom 25,321 28,851 Other countries 39,556 38,671 Total property and equipment, net $ 261,954 $ 282,102 In fiscal year 2016 , two distributors, Ingram Micro and Arrow, accounted for 13% and 12%, respectively, of the Company’s total net revenues. In fiscal year 2015 , two distributors, Ingram Micro and Arrow, accounted for 13% and 11%, respectively, of the Company’s total net revenues. In fiscal year 2014, one distributor, Ingram Micro, accounted for 14% of the Company’s total net revenues. The Company’s distributor arrangements with Ingram Micro and Arrow consist of several non-exclusive, Revenues by product grouping were as follows for the years ended: December 31, 2016 2015 2014 (In thousands) Net revenues: Workspace Services revenues (1) $ 1,690,783 $ 1,639,072 $ 1,600,581 Delivery Networking revenues (2) 782,875 749,910 702,028 Cloud Services Revenues (3) 130,955 101,403 75,569 Professional services (4) 131,229 147,488 175,541 Other 238 8,281 9,345 Total net revenue $ 2,736,080 $ 2,646,154 $ 2,563,064 (1) Workspace Services revenues are primarily comprised of sales from XenDesktop, XenApp, XenMobile and related license updates and maintenance and support. (2) Delivery Networking revenues are primarily comprised of NetScaler ADC and NetScaler SD-WAN, (3) Cloud Services revenues primarily include ShareFile, Podio and Citrix Cloud products. (4) Professional services revenues are primarily comprised of revenues from consulting services and product training and certification services. Revenues by Geographic Location The following table presents revenues by segment and geographic location, for the years ended: December 31, 2016 2015 2014 (In thousands) Net revenues: Americas $ 1,598,896 $ 1,487,364 $ 1,394,112 EMEA 863,517 873,620 863,179 Asia-Pacific 273,667 285,170 305,773 Total net revenues $ 2,736,080 $ 2,646,154 $ 2,563,064 Export revenue represents shipments of finished goods and services from the United States to international customers, primarily in Latin America and Canada. Shipments from the United States to international customers for 2016, 2015 and 2014 were $160.5 million, $178.7 million and $176.1 million, respectively.

Convertible Senior Notes

Convertible Senior Notes	12 Months Ended
	Dec. 31, 2016
Debt Disclosure [Abstract]
Convertible Senior Notes	12. CONVERTIBLE SENIOR NOTES Convertible Notes Offering During 2014, the Company completed a private placement of approximately $1.44 billion principal amount of 0.500% Convertible Notes due 2019. The net proceeds from this offering were approximately $1.42 billion, after deducting the initial purchasers’ discounts and commissions and the estimated offering expenses payable by the Company. The Company used approximately $82.6 million of the net proceeds to pay the cost of the Bond Hedges described below (after such cost was partially offset by the proceeds to the Company from the Warrant Transactions described below). The Company used the remainder of the net proceeds from the offering and a portion of its existing cash and investments to purchase an aggregate of approximately $1.5 billion of its common stock, as authorized under its share repurchase program. The Company used approximately $101.0 million to purchase shares of common stock from certain purchasers of the Convertible Notes in privately negotiated transactions concurrently with the closing of the offering, and the remaining $1.4 billion to purchase additional shares of common stock through an Accelerated Share Repurchase (“ASR”) which the Company entered into with Citibank, N.A. (the “ASR Counterparty”) on April 25, 2014 (the “ASR Agreement”). The Convertible Notes are governed by the terms of an indenture, dated as of April 30, 2014 (the “Indenture”), between the Company and Wilmington Trust, National Association, as trustee (the “Trustee”). The Convertible Notes are the senior unsecured obligations of the Company and bear interest at a rate of 0.500% per annum, payable semi-annually in arrears on April 15 and October 15 of each year. The Convertible Notes will mature on April 15, 2019, unless earlier repurchased or converted. Upon conversion, the Company will pay cash up to the aggregate principal amount of the Convertible Notes to be converted and pay or deliver, as the case may be, cash, shares of common stock or a combination of cash and shares of common stock, at the Company’s election, in respect of the remainder, if any, of the Company’s conversion obligation in excess of the aggregate principal amount of the Convertible Notes being converted. The conversion rate for the Convertible Notes is 11.1111 shares of common stock per $1,000 principal amount of Convertible Notes, which corresponds to a conversion price of approximately $90.00 per share of common stock. The conversion rate is subject to adjustment from time to time upon the occurrence of certain events, including, but not limited to, the issuance of certain stock dividends on common stock, the issuance of certain rights or warrants, subdivisions, combinations, distributions of capital stock, indebtedness, or assets, the payment of cash dividends and certain issuer tender or exchange offers. The Company may not redeem the Convertible Notes prior to the maturity date and no “sinking fund” is provided for the Convertible Notes, which means that the Company is not required to periodically redeem or retire the Convertible Notes. Upon the occurrence of certain fundamental changes involving the Company, holders of the Convertible Notes may require the Company to repurchase for cash all or part of their Convertible Notes in principal amounts of $1,000 or an integral multiple thereof at a repurchase price equal to 100% of the principal amount of the Convertible Notes to be repurchased, plus accrued and unpaid interest to, but excluding, the fundamental change repurchase date. In accounting for the issuance of the Convertible Notes, the Company separated the Convertible Notes into liability and equity components. The carrying amount of the liability component was calculated by measuring the estimated fair value of a similar liability that does not have an associated convertible feature. The carrying amount of the equity component representing the conversion option was determined by deducting the fair value of the liability component from the face value of the Convertible Notes as a whole. The excess of the principal amount of the liability component over its carrying amount (“debt discount”) is amortized to interest expense over the term of the Convertible Notes using the effective interest method with an effective interest rate of 3.0 percent per annum. The equity component is not remeasured as long as it continues to meet the conditions for equity classification. In accounting for the transaction costs related to the Convertible Note issuance, the Company allocated the total amount incurred to the liability and equity components based on their relative values. Issuance costs attributable to the $1.3 billion liability component are being amortized to expense over the term of the Convertible Notes, and issuance costs attributable to the equity component are included along with the equity component in stockholders’ equity. Additionally, a deferred tax liability of $8.2 million related to a portion of the equity component transaction costs which are deductible for tax purposes is included in Other liabilities in the accompanying consolidated balance sheets. As a result of the structure of the Reverse Morris Trust (RMT) transaction with LogMeIn, Inc., and the notification on October 10, 2016 to noteholders in accordance with the Indenture, the Convertible Notes became convertible until the earlier of (1) the close of business on the business day immediately preceding the ex-dividend ex-dividend The Convertible Notes consist of the following (in thousands): December 31, December 31, Liability component Principal $ 1,437,500 $ 1,437,500 Less: note discount and issuance costs (89,344 ) (112,508 ) Net carrying amount $ 1,348,156 $ 1,324,992 Equity component Temporary Equity $ 79,495 $ — Additional paid-in-capital 83,374 162,869 Total equity (including temporary equity) $ 162,869 $ 162,869 The following table includes total interest expense recognized related to the Convertible Notes (in thousands): Year Ended December 31, 2016 2015 2014 Contractual interest expense $ 7,187 $ 7,188 $ 4,792 Amortization of debt issuance costs 3,863 3,974 2,461 Amortization of debt discount 33,014 32,039 20,832 $ 44,064 $ 43,201 $ 28,085 See Note 5 to the Company’s consolidated financial statements for fair value disclosures related to the Company’s Convertible Notes. Convertible Note Hedge and Warrant Transactions In connection with the pricing of the Convertible Notes, the Company entered into convertible note hedge transactions relating to approximately 16.0 million shares of common stock (the “Bond Hedges”), with JPMorgan Chase Bank, National Association, London Branch; Goldman, Sachs & Co. (now Goldman Sachs & Co. LLC); Bank of America, N.A.; and Royal Bank of Canada (the “Option Counterparties”) and also entered into separate warrant transactions (the “Initial Warrant Transactions”) with each of the Option Counterparties relating to approximately 16.0 million shares of common stock. The Bond Hedges are generally expected to reduce the potential dilution upon conversion of the Convertible Notes and/or offset any payments in cash, shares of common stock or a combination of cash and shares of common stock, at the Company’s election, that the Company is required to make in excess of the principal amount of the Convertible Notes upon conversion of any Convertible Notes, as the case may be, in the event that the market price per share of common stock, as measured under the terms of the Bond Hedges, is greater than the strike price of the Bond Hedges, which initially corresponds to the conversion price of the Convertible Notes and is subject to anti-dilution adjustments substantially similar to those applicable to the conversion rate of the Convertible Notes. The Warrant Transactions will separately have a dilutive effect to the extent that the market value per share of common stock, as measured under the terms of the Warrant Transactions, exceeds the applicable strike price of the warrants issued pursuant to the Warrant Transactions (the “Warrants”). The initial strike price of the Warrants is $120.00 per share. The Warrants will expire in ratable portions on a series of expiration dates commencing after the maturity of the Convertible Notes. The Bond Hedges and Warrants are not marked to market. The value of the Bond Hedges and Warrants were initially recorded in stockholders’ equity and continue to be classified within stockholders’ equity. As of December 31, 2016, no warrants have been exercised. Aside from the initial payment of a premium to the Option Counterparties under the Bond Hedges, which amount is partially offset by the receipt of a premium under the Warrant Transactions, the Company is not required to make any cash payments to the Option Counterparties under the Bond Hedges and will not receive any proceeds if the Warrants are exercised.

Credit Facility

Credit Facility	12 Months Ended
	Dec. 31, 2016
Text Block [Abstract]
Credit Facility	13. CREDIT FACILITY Effective January 7, 2015, the Company entered into a Credit Facility with a group of financial institutions (the “Lenders”). The Credit Facility provides for a five year revolving line of credit in the aggregate amount of $250.0 million, subject to continued covenant compliance. The Company may elect to increase the revolving credit facility by up to $250.0 million if existing or new lenders provide additional revolving commitments in accordance with the terms of the Credit Agreement. A portion of the revolving line of credit (i) in the aggregate amount of $25.0 million may be available for issuances of letters of credit and (ii) in the aggregate amount of $10.0 million may be available for swing line loans, as part of, not in addition to, the aggregate revolving commitments. The Credit Facility bears interest at the LIBOR plus 1.10% and adjusts in the range of 1.00% to 1.30% above LIBOR based on the ratio of the Company’s total debt to its adjusted earnings before interest, taxes, depreciation, amortization and certain other items (“EBITDA”) as defined in the agreement. In addition, the Company is required to pay a quarterly facility fee ranging from 0.125% to 0.20% of the aggregate revolving commitments under the Credit Facility and based on the ratio of the Company’s total debt to the Company’s consolidated EBITDA. As of December 31, 2016, there were no amounts outstanding under the Credit Facility. The Credit Agreement contains certain financial covenants that require the Company to maintain a consolidated leverage ratio of not more than 3.5:1.0 and a consolidated interest coverage ratio of not less than 3.0:1.0. In addition, the Credit Agreement contains customary affirmative and negative covenants, including covenants that limit or restrict the ability of the Company to grant liens, merge, dissolve or consolidate, dispose of all or substantially all of its assets, pay dividends during the existence of a default under the Credit Agreement, change its business and incur subsidiary indebtedness, in each case subject to customary exceptions for a credit facility of this size and type. The Company was in compliance with these covenants as of December 31, 2016.

Derivative Financial Instrument

Derivative Financial Instruments	12 Months Ended
	Dec. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	14. DERIVATIVE FINANCIAL INSTRUMENTS Derivatives Designated as Hedging Instruments As of December 31, 2016, the Company’s derivative assets and liabilities primarily resulted from cash flow hedges related to its forecasted operating expenses transacted in local currencies. A substantial portion of the Company’s overseas expenses are and will continue to be transacted in local currencies. To protect against fluctuations in operating expenses and the volatility of future cash flows caused by changes in currency exchange rates, the Company has established a program that uses foreign exchange forward contracts to hedge its exposure to these potential changes. The terms of these instruments, and the hedged transactions to which they relate, generally do not exceed twelve months. Generally, when the dollar is weak, foreign currency denominated expenses will be higher, and these higher expenses will be partially offset by the gains realized from the Company’s hedging contracts. Conversely, if the dollar is strong, foreign currency denominated expenses will be lower. These lower expenses will in turn be partially offset by the losses incurred from the Company’s hedging contracts. The change in the derivative component in Accumulated other comprehensive loss includes unrealized gains or losses that arose from changes in market value of the effective portion of derivatives that were held during the period, and gains or losses that were previously unrealized but have been recognized in the same line item as the forecasted transaction in current period net income due to termination or maturities of derivative contracts. This reclassification has no effect on total comprehensive income or equity. The total cumulative unrealized loss on cash flow derivative instruments was $3.1 million at December 31, 2016 and $2.3 million at December 31, 2015, and is included in Accumulated other comprehensive loss in the accompanying consolidated balance sheets. See Note 16 for more information related to comprehensive income. The net unrealized loss as of December 31, 2016 is expected to be recognized in income over the next 12 months at the same time the hedged items are recognized in income. Derivatives not Designated as Hedging Instruments A substantial portion of the Company’s overseas assets and liabilities are and will continue to be denominated in local currencies. To protect against fluctuations in earnings caused by changes in currency exchange rates when remeasuring the Company’s balance sheet, it utilizes foreign exchange forward contracts to hedge its exposure to this potential volatility. These contracts are not designated for hedge accounting treatment under the authoritative guidance. Accordingly, changes in the fair value of these contracts are recorded in Other expense, net. Fair Values of Derivative Instruments Asset Derivatives Liability Derivatives (In thousands) December 31, 2016 December 31, 2015 December 31, 2016 December 31, 2015 Derivatives Designated as Hedging Balance Sheet Fair Balance Sheet Fair Balance Sheet Fair Balance Sheet Fair Value Foreign currency forward contracts Prepaid $ 460 Prepaid $ 436 Accrued $ 3,816 Accrued $ 2,895 Asset Derivatives Liability Derivatives (In thousands) December 31, 2016 December 31, 2015 December 31, 2016 December 31, 2015 Derivatives Not Designated as Hedging Balance Sheet Fair Balance Sheet Fair Balance Sheet Fair Balance Sheet Fair Value Foreign currency forward contracts Prepaid $ 2,046 Prepaid $ 627 Accrued $ 619 Accrued $ 783 The Effect of Derivative Instruments on Financial Performance For the Year ended December 31, (In thousands) Derivatives in Cash Flow Hedging Relationships Amount of (Loss) Gain Location of Loss Reclassified Amount of Loss Reclassified from 2016 2015 2016 2015 Foreign currency forward contracts $ (875 ) $ 6,090 Operating expenses $ (1,763 ) $ (13,027 ) There was no material ineffectiveness in the Company’s foreign currency hedging program in the periods presented. For the Year ended December 31, (In thousands) Derivatives Not Designated as Hedging Instruments Location of (Loss) Gain Recognized Amount of (Loss) Gain Recognized 2016 2015 Foreign currency forward contracts Other expense, net $ (1,030 ) $ 1,669 Outstanding Foreign Currency Forward Contracts As of December 31, 2016, the Company had the following net notional foreign currency forward contracts outstanding (in thousands): Foreign Currency Currency Australian dollars AUD 8,200 Brazilian Real BRL 8,300 British pounds sterling GBP 283 Canadian dollars CAD 2,850 Chinese renminbi CNY 48,300 Danish krone DKK 21,735 Euro EUR 8,307 Hong Kong dollars HKD 32,500 Indian rupees INR 3,875 Japanese yen JPY 685,319 Singapore dollars SGD 9,967 Swiss francs CHF 37,700

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2016
Earnings Per Share [Abstract]
Earnings Per Share	15. EARNINGS PER SHARE The following table sets forth the computation of basic and diluted net income per share (in thousands, except per share information): Year Ended December 31, 2016 2015 2014 Numerator: Income from continuing operations $ 469,855 $ 215,133 $ 167,219 Income from discontinued operations, net of income taxes 66,257 104,228 84,504 Net income $ 536,112 $ 319,361 $ 251,723 Denominator: Denominator for basic earnings per share—weighted-average shares outstanding 155,134 158,874 169,879 Effect of dilutive employee stock awards: Employee stock awards 1,950 1,488 1,391 Denominator for diluted earnings per share—weighted-average shares outstanding 157,084 160,362 171,270 Basic earnings per share: Income from continuing operations $ 3.03 $ 1.35 $ 0.98 Income from discontinued operations, net of income taxes 0.43 0.66 0.50 Basic earnings per share $ 3.46 $ 2.01 $ 1.48 Diluted earnings per share Income from continuing operations $ 2.99 $ 1.34 $ 0.98 Income from discontinued operations, net of income taxes 0.42 0.65 0.49 Diluted earnings per share $ 3.41 $ 1.99 $ 1.47 Anti-dilutive weighted-average shares from stock awards 322 2,151 3,026 The weighted-average number of shares outstanding used in the computation of basic and diluted earnings per share does not include the effect of the potential outstanding common stock from the Company’s Convertible Senior Notes (the “Convertible Notes”) and warrants. The effects of these potentially outstanding shares were not included in the calculation of diluted earnings per share because the effect would have been anti-dilutive. The Company uses the treasury stock method for calculating any potential dilutive effect of the conversion spread on its Convertible Notes on diluted earnings per share, if applicable, as upon conversion, the Company will pay cash up to the aggregate principal amount of the Convertible Notes to be converted and pay or deliver, as the case may be, cash, shares of common stock or a combination of cash and shares of common stock, at the Company’s election, in respect of the remainder, if any, of the Company’s conversion obligation in excess of the aggregate principal amount of the Convertible Notes being converted. The conversion spread will have a dilutive impact on diluted earnings per share when the average market price of the Company’s common shares for a given period exceeds the conversion price of $90.00 per share. For the years ended December 31, 2016, 2015 and 2014, the Convertible Notes have been excluded from the computation of diluted earnings per share as the effect would be anti-dilutive since the conversion price of the Convertible Notes exceeded the average market price of the Company’s common stock. In addition, the Company uses the treasury stock method for calculating any potential dilutive effect related to the warrants. See Note 12 to the Company’s consolidated financial statements for detailed information on the Convertible Notes offering.

Comprehensive Income

Comprehensive Income	12 Months Ended
	Dec. 31, 2016
Equity [Abstract]
Comprehensive Income	16. COMPREHENSIVE INCOME The changes in Accumulated other comprehensive loss by component, net of tax, are as follows: Foreign currency Unrealized available-for- sale securities Unrealized Other Total (In thousands) Balance at December 31, 2015 $ (16,346 ) $ (2,900 ) $ (2,255 ) $ (7,026 ) $ (28,527 ) Other comprehensive income (loss) before reclassifications — 996 (2,638 ) 906 (736 ) Amounts reclassified from accumulated other comprehensive loss — (1,204 ) 1,763 — 559 Net current period other comprehensive (loss) income — (208 ) (875 ) 906 (177 ) Balance at December 31, 2016 $ (16,346 ) $ (3,108 ) $ (3,130 ) $ (6,120 ) $ (28,704 ) Income tax expense or benefit allocated to each component of other comprehensive loss is not material. Reclassifications out of Accumulated other comprehensive loss are as follows: For the Twelve Months Ended December 31, 2016 (In thousands) Details about accumulated other Amount reclassified from Affected line item in the Unrealized net gains on available-for-sale $ (1,204 ) Other expense, net Unrealized net losses on cash flow hedges 1,763 Operating expenses * $ 559 * Operating expenses amounts allocated to Research and development, Sales, marketing and services, and General and administrative are not individually significant.

Restructuring

Restructuring	12 Months Ended
	Dec. 31, 2016
Restructuring and Related Activities [Abstract]
Restructuring	17. RESTRUCTURING The Company has implemented multiple restructuring plans to reduce its cost structure, align resources with its product strategy and improve efficiency, which has resulted in workforce reductions and the consolidation of certain leased facilities. For the years ended December 31, 2016, 2015 and 2014, restructuring charges were comprised of the following (in thousands): Year Ended December 31, 2016 2015 2014 Employee severance and related costs $ 41,054 $ 74,879 $ 14,092 Consolidation of leased facilities 28,857 22,100 — Reversal of previous charges (2,510 ) (286 ) — Other — 1,968 — Total Restructuring charges $ 67,401 $ 98,661 $ 14,092 During the years ended December 31, 2016 and 2015, the Company incurred costs of $44.5 million and $29.4 million primarily related to its announced plan in November 2015 to simplify the Company’s enterprise go-to-market During the years ended December 31, 2016 and 2015, the Company also recorded charges of $24.0 million and $67.5 million related to its announced plan in January 2015 to increase strategic focus and operational efficiency. The charges primarily related to the severance and other costs directly related to the reduction of the Company’s workforce and consolidation of leased facilities. The majority of the activities related to this program were substantially completed by the end of 2015. As of December 31, 2016, total charges related to this program incurred since inception were $91.5 million. The amounts recorded during the year ended December 31, 2014 were primarily related to severance and other costs directly related to the reduction of the Company’s workforce pursuant to a restructuring plan initiated in 2014 to better align resources to strategic initiatives. Restructuring accruals The activity in the Company’s restructuring accruals for the year ended December 31, 2016 is summarized as follows (in thousands): Total Balance at January 1, 2016 $ 40,396 Restructuring charges 67,401 Payments (69,012 ) Other 1,158 Balance at December 31, 2016 $ 39,943 As of December 31, 2016, the $39.9 million in outstanding restructuring accruals primarily relate to future payments for leased facilities.

Separation

Separation	12 Months Ended
	Dec. 31, 2016
Text Block [Abstract]
Separation	18. SEPARATION On July 26, 2016, the Company entered into definitive agreements with GetGo, Inc., its wholly-owned subsidiary, and LogMeIn, Inc., with respect to a Reverse Morris Trust transaction. Subject to the terms and conditions of those agreements, the Company transferred its GoTo Business to GetGo, and after the close of business on January 31, 2017, the Company distributed approximately 26.9 million shares of GetGo common stock to the Company’s stockholders of record as of the close of business on January 20, 2017. Immediately following the Distribution, Lithium Merger Sub, Inc., a wholly-owned subsidiary of LogMeIn, merged with and into GetGo, with GetGo as the surviving corporation. In connection with the Merger, GetGo became a wholly-owned subsidiary of LogMeIn, and each share of GetGo common stock was converted into the right to receive one share of LogMeIn common stock. As a result of these transactions, the Company’s stockholders received approximately 26.9 million shares of LogMeIn common stock in the aggregate, or 0.171844291 of a share of LogMeIn common stock for each share of the Company’s common stock held of record by such stockholders on the Record Date. No fractional shares of LogMeIn were issued, and the Company’s stockholders instead received cash in lieu of any fractional shares. The conversion period for the Convertible Notes that commenced on October 10, 2016 in connection with the Distribution terminated as of the close of business on January 31, 2017. As a result, the Convertible Notes were reclassified to Other liabilities from Current liabilities and the amount previously recorded as Temporary equity was reclassified to permanent equity as of January 31, 2017. The Distribution also resulted in an adjustment to the conversion rate for the Convertible Notes under the terms of the Indenture. As a result of this adjustment, the conversion rate for the Convertible Notes in effect as of the opening of business on February 1, 2017 is 13.9061 shares of the Company’s common stock per $1,000 principal amount of Convertible Notes, which corresponds to a conversion price of approximately $71.91 per share of common stock. Corresponding adjustments were made to the conversion rates for the Convertible Note Hedge and Warrant Transactions as of the opening of business on February 1, 2017. In connection with the Distribution, the Company made certain adjustments to outstanding restricted stock unit and stock option awards with the intention of preserving the intrinsic value of the awards prior to the Distribution. There was no change to the vesting terms of these awards. As a result of these adjustments, the Company currently expects to incur incremental expense in the first quarter of 2017. As a result of the separation of the GoTo Business, the Company has evaluated its existing tax attributes to reflect the continuing operations of the Company. The Company expects to record a $45.2 million charge to income tax expense in the first quarter of 2017 as a result of changes in its expectations of realizability of state R&D credits due directly to the separation of the GoTo Business. The Company will have less income subject to taxation in California, and therefore, the R&D credits will not be able to be utilized. The Company has incurred incremental costs in connection with the separation of the GoTo Business. These costs relate primarily to third-party advisory and consulting services, retention payments to certain employees, incremental stock-based compensation and other costs directly related to the separation of the GoTo Business. Costs related to employee retention or stock-based compensation are classified on a basis consistent with their regular compensation charges and included within Cost of net revenues, Research and development, Sales, marketing and services, or General and administrative expense in the consolidated statements of income as applicable. Costs other than those related to employees are included within Separation expense in the consolidated statements of income. During the years ended December 31, 2016 and December 31, 2015, the Company incurred approximately $2.5 million and $0.2 million related to separation costs, respectively. As a result of the separation, the results of the GoTo Business are accounted for as discontinued operations for all periods presented. For additional information on discontinued operations, see Note 21.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	12 Months Ended
	Dec. 31, 2016
Accounting Changes and Error Corrections [Abstract]
Recent Accounting Pronouncements	19. RECENT ACCOUNTING PRONOUNCEMENTS In January 2017, the Financial Accounting Standards Board issued an accounting standard update on the accounting for business combinations by clarifying the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions or disposals of assets or businesses. The new guidance is effective for annual and interim periods beginning after December 15, 2017. The Company is currently evaluating the potential impact of this standard on its financial position and results of operations. In October 2016, the Financial Accounting Standards Board issued an accounting standard update on the accounting for income taxes, which requires entities to recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transaction occurs as opposed to deferring tax consequences and amortizing them into future periods. This update is effective for annual and interim periods beginning after December 15, 2017, with early adoption permitted. A modified retrospective approach with a cumulative-effect adjustment directly to retained earnings at the beginning of the period of adoption is required. The Company does not expect the adoption of this standard to have a material impact on its consolidated financial position or results of operations. In March 2016, the Financial Accounting Standards Board issued an accounting standard update on the accounting of stock-based compensation. The guidance requires the recognition of the income tax effects of awards in the income statement when the awards vest or are settled, thus eliminating additional paid in capital pools. The guidance also allows for the employer to repurchase more of an employee’s shares for tax withholding purposes without triggering liability accounting. In addition, the guidance allows for a policy election to account for forfeitures as they occur rather than on an estimated basis. The new guidance is effective for annual reporting periods beginning after December 15, 2016. Early adoption is permitted. The Company is currently evaluating the potential impact of this standard on its financial position and results of operations. In February 2016, the Financial Accounting Standards Board issued an accounting standard update on the accounting of leases. The new guidance requires that lessees in a leasing arrangement recognize a right-of-use In April 2015, the Financial Accounting Standards Board issued an accounting standard update on the presentation of debt issuance costs. The new guidance requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The Company adopted this standard effective January 1, 2016 and retroactively adjusted the long-term debt liability presented as of December 31, 2015 by reducing the long-term debt liability by the amount of the deferred financing costs of $13.9 million and reducing the deferred financing costs asset included in other assets on the consolidated balance sheets by a corresponding amount. The adoption of this standard did not have a material impact on the Company’s consolidated financial position, results of operations and cash flows. In April 2015, Financial Accounting Standards Board issued an accounting standard update on customer’s accounting for fees paid in a cloud computing arrangement. The amendments in this update provide guidance about whether a cloud computing arrangement includes a software license. If a cloud computing arrangement includes a software license, the customer should account for the software license element of the arrangement consistent with other software licenses. If a cloud computing arrangement does not include a software license, the customer should account for the arrangement as a service contract. The Company adopted this standard effective January 1, 2016 on a prospective basis. Adoption of this standard did not have a material impact on the Company’s financial position and results of operations. In May 2014, the Financial Accounting Standards Board issued an accounting standard update on revenue recognition. The new guidance creates a single, principle-based model for revenue recognition and expands and improves disclosures about revenue. In July 2015, the Financial Accounting Standards Board issued an accounting standard update that defers the effective date of the new revenue recognition standard by one year. The new guidance is effective for annual reporting periods beginning on or after December 15, 2017, and must be adopted using either a full retrospective approach for all periods presented in the period of adoption or a modified retrospective approach. The Company has completed its assessment of its information technology systems, data and processes related to the implementation of this accounting standard. Additionally, the Company has substantially completed its information technology system design and solution development, and will commence implementation of the solution in the first quarter of fiscal 2017. The Company expects to adopt the accounting standard update on a modified retrospective basis in the first quarter of fiscal 2018, and is currently evaluating the potential impact of this standard on its financial position and results of operations. Under the new standard the Company expects to capitalize and amortize certain commissions over the expected customer life rather than expensing them as incurred. Additionally, under the new standard, the Company would be required to recognize term license revenues upfront at time of delivery rather than ratably over the related contract period. The Company expects revenue recognition related to perpetual software, hardware, cloud offerings and professional services to remain substantially unchanged.

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2016
Subsequent Events [Abstract]
Subsequent Events	20. SUBSEQUENT EVENTS 2017 Acquisition On January 3, 2017, the Company acquired all of the issued and outstanding securities of Unidesk Corporation (“Unidesk”). Unidesk is the inventor of the Microsoft Windows application packaging and management technology known as layering. Citrix acquired Unidesk to enhance and provide a demonstrable difference in application management and delivery. By incorporating the Unidesk technology into XenApp and XenDesktop, Citrix will advance its industry leadership by offering the most powerful and easy to deploy application layering solution available for delivering and managing applications and desktops in the cloud, on-premises

Discontinued Operations

Discontinued Operations	12 Months Ended
	Dec. 31, 2016
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations	21. DISCONTINUED OPERATIONS On January 31, 2017, the Company completed the Spin-off Spin-off. Spin-off Major classes of line items constituting Income from discontinued operations related to the GoTo Business: Year Ended December 31, 2016 2015 2014 (in thousands) Net revenues $ 682,185 $ 629,440 $ 579,792 Cost of net revenues 154,652 140,324 126,513 Gross margin 527,533 489,116 453,279 Operating expenses: Research and development 93,892 83,018 66,898 Sales, marketing and services 209,475 189,560 205,307 General and administrative 63,270 50,068 43,357 Amortization of other intangible assets 14,097 11,254 3,994 Restructuring 3,721 1,750 6,332 Separation 54,084 6,173 — Total operating expenses 438,539 341,823 325,888 Income from discontinued operations before income taxes 88,994 147,293 127,391 Income tax expense 22,737 43,065 42,887 Income from discontinued operations, net of income tax $ 66,257 $ 104,228 $ 84,504 The assets and liabilities of the GoTo Business have been classified as discontinued operations as of December 31, 2016. Carrying amounts of major classes of assets and liabilities included as part of discontinued operations related to the GoTo Business: December 31, December 31, (in thousands) Assets Current assets: Cash $ 120,861 $ 57,762 Accounts receivable, net 44,734 45,850 Prepaid expenses and other current assets 14,094 13,115 Total current assets of discontinued operations 179,689 116,727 Property and equipment, net 81,866 91,715 Goodwill 380,917 377,101 Other intangible assets, net 54,312 73,081 Deferred tax assets, net 18,496 8,002 Other assets 3,340 3,758 Long-term assets of discontinued operations $ 538,931 $ 553,657 Total major classes of assets of discontinued operations $ 718,620 $ 670,384 Liabilities Current liabilities: Accounts payable $ 11,333 $ 15,959 Accrued expenses and other current liabilities 46,088 36,131 Current portion of deferred revenues 115,249 110,211 Total current liabilities of discontinued operations 172,670 162,301 Long-term portion of deferred revenues 4,224 7,204 Other liabilities 3,484 4,174 Long-term liabilities of discontinued operations $ 7,708 $ 11,378 Total major classes of liabilities of discontinued operations $ 180,378 $ 173,679 Citrix and GetGo entered into several agreements in connection with the Spin-off,

Schedule II - Valuation and Qua

Schedule II - Valuation and Qualifying Accounts	12 Months Ended
	Dec. 31, 2016
Valuation and Qualifying Accounts [Abstract]
Schedule II - Valuation and Qualifying Accounts	CITRIX SYSTEMS, INC. SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS Beginning Charged to Charged Deductions Balance (In thousands) 2016 Deducted from asset accounts: Allowance for doubtful accounts $ 6,241 $ 954 $ — $ 3,306 (2) $ 3,889 Allowance for returns 1,438 — 2,088 (1) 1,532 (4) 1,994 Valuation allowance for deferred tax assets 16,673 — (2,517 ) (5) — 14,156 2015 Deducted from asset accounts: Allowance for doubtful accounts $ 3,750 $ 5,578 $ — $ 3,087 (2) $ 6,241 Allowance for returns 2,185 — 3,276 (1) 4,023 (4) 1,438 Valuation allowance for deferred tax assets 15,167 — 1,506 (5) — 16,673 2014 Deducted from asset accounts: Allowance for doubtful accounts $ 3,217 $ 2,815 $ 76 (3) $ 2,358 (2) $ 3,750 Allowance for returns 2,062 — 5,049 (1) 4,926 (4) 2,185 Valuation allowance for deferred tax assets 26,465 — (11,298 ) (5) — 15,167 (1) Charged against revenues. (2) Uncollectible accounts written off, net of recoveries. (3) Adjustments from acquisitions. (4) Credits issued for returns. (5) Related to deferred tax assets on foreign tax credits, net operating loss carryforwards, and depreciation.

Significant Accounting Polici32

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2016
Accounting Changes and Error Corrections [Abstract]
Consolidation Policy	Consolidation Policy The consolidated financial statements of the Company include the accounts of its wholly-owned subsidiaries in the Americas, Europe, the Middle East and Africa (“EMEA”) and Asia-Pacific. All significant transactions and balances between the Company and its subsidiaries have been eliminated in consolidation.
Cash and Cash Equivalents	Cash and Cash Equivalents Cash and cash equivalents at December 31, 2016 and 2015 include marketable securities, which are primarily money market funds, commercial paper, agency, and government securities, municipal securities and corporate securities with initial or remaining contractual maturities when purchased of three months or less.
Available-for-sale Investments	Available-for-sale Short-term and long-term investments at December 31, 2016 and 2015 primarily consist of agency securities, corporate securities, municipal securities and government securities. Investments classified as available-for-sale available-for-sale non-current available-for-sale The Company’s investment policy is designed to limit exposure to any one issuer depending on credit quality. The Company uses information provided by third parties to adjust the carrying value of certain of its investments to fair value at the end of each period. Fair values are based on a variety of inputs and may include interest rates, known historical trades, yield curve information, benchmark data, prepayment speeds, credit quality and broker/dealer quotes. See Note 4 for investment information.
Accounts Receivable	Accounts Receivable The Company’s accounts receivable are attributable primarily to direct sales to end customers via the Web or through independent software vendors, or ISVs, in addition to indirectly through value-added resellers, or VARs, value-added distributors, or VADs, systems integrators, or SIs, original equipment manufacturers, or OEMs and service providers. Collateral is generally not required. The Company also maintains allowances for doubtful accounts for estimated losses resulting from the inability of the Company’s customers to make payments which includes both general and specific reserves. The Company periodically reviews these estimated allowances by conducting an analysis of the customer’s payment history and credit worthiness, the age of the trade receivable balances and current economic conditions that may affect a customer’s ability to make payments. Based on this review, the Company specifically reserves for those accounts deemed uncollectible. When receivables are determined to be uncollectible, principal amounts of such receivables outstanding are deducted from the allowance. The allowance for doubtful accounts was $3.9 million and $6.2 million as of December 31, 2016 and 2015, respectively. If the financial condition of a significant distributor or customer were to deteriorate, the Company’s operating results could be adversely affected. As of December 31, 2016, two distributors, the Arrow Group and Ingram Micro, accounted for 14% and 10% of gross accounts receivable, respectively. As of December 31, 2015, there was no individual customer that accounted for over 10% of gross accounts receivable.
Inventory	Inventory Inventories are stated at the lower of cost or market on a standard cost basis, which approximates actual cost. The Company’s inventories primarily consist of finished goods as of December 31, 2016 and 2015.
Property and Equipment	Property and Equipment Property and equipment is stated at cost. Depreciation is computed using the straight-line method over the estimated useful lives of the assets, which is generally three years for computer equipment and software, the lesser of the lease term or ten years for leasehold improvements, which is the estimated useful life, seven years for office equipment and furniture and the Company’s enterprise resource planning system and 40 years for buildings. During 2016 and 2015, the Company retired $118.0 million and $18.3 million, respectively, in property and equipment that were no longer in use. At the time of retirement, the remaining net book value of the assets retired was not material and no material asset retirement obligations were associated with them. Property and equipment consist of the following: December 31, 2016 2015 (In thousands) Buildings $ 76,152 $ 76,152 Computer equipment 170,252 227,079 Software 350,195 309,583 Equipment and furniture 71,182 78,201 Leasehold improvements 164,090 178,228 831,871 869,243 Less: accumulated depreciation and amortization (602,433 ) (613,796 ) Assets under construction 15,747 9,886 Land 16,769 16,769 Total $ 261,954 $ 282,102
Long-Lived Assets	Long-Lived Assets The Company reviews for impairment of long-lived assets and certain identifiable intangible assets to be held and used whenever events or changes in circumstances indicate that the carrying amount of such assets may not be fully recoverable. Determination of recoverability is based on an estimate of undiscounted future cash flows resulting from the use of the asset and its eventual disposition. Measurement of an impairment loss is based on the fair value of the asset compared to its carrying value. Long-lived assets and certain identifiable intangible assets to be disposed of are reported at the lower of carrying amount or fair value less costs to sell. For the year ended December 31, 2015, the Company identified certain intangible assets that were impaired and recorded non-cash non-recurring
Goodwill	Goodwill The Company accounts for goodwill in accordance with the authoritative guidance, which requires that goodwill and certain intangible assets are not amortized, but are subject to an annual impairment test. As part of its continued transformation, effective January 1, 2016, the Company reorganized a part of its business by creating a new Cloud product grouping. In connection with this change, during the fourth quarter of 2016, the Company performed an assessment of its goodwill reporting units and determined that the reorganization resulted in the identification of two goodwill reporting units (excluding the GoTo Business). There was no impairment of goodwill or indefinite lived intangible assets as a result of the annual impairment analysis completed during the fourth quarters of 2016 and 2015, respectively. The authoritative guidance provides entities with an option to perform a qualitative assessment to determine whether further quantitative impairment testing is necessary. The Company performed the qualitative assessment when it performed its goodwill impairment test in the fourth quarter of 2016. As a result of the qualitative analysis, no further quantitative impairment test was deemed necessary. See Note 3 for more information regarding the Company’s acquisitions and Note 11 for more information regarding the Company’s segments. On January 31, 2017, Citrix completed the separation of the GoTo Business. As a result, the Company re-evaluated The following table presents the change in goodwill during 2016 and 2015 (in thousands): Balance at Additions Other Balance at Balance at Additions Other Balance at Goodwill $ 1,585,621 $ 897 (1 ) $ (625 ) (2) $ 1,585,893 $ 1,519,436 $ 66,925 (3) $ (740 ) (4) $ 1,585,621 (1) Amount relates to preliminary purchase price allocation of goodwill associated with the 2016 business combination. See Note 3 for more information regarding the Company’s acquisitions. (2) Amount relates to goodwill associated with the sale of the Company’s CloudPlatform and CloudPortal Business Manager products and to adjustments to the preliminary purchase price allocation associated with 2015 acquisitions. See Note 3 for more information regarding the Company’s acquisitions and divestitures. (3) Amount primarily relates to 2015 acquisitions. See Note 3 for more information regarding the Company’s acquisitions. (4) Amount primarily relates to adjustments to purchase price allocations for certain acquisitions.
Intangible Assets	Intangible Assets The Company has intangible assets which were primarily acquired in conjunction with business combinations and technology purchases. Intangible assets with finite lives are recorded at cost, less accumulated amortization. Amortization is computed over the estimated useful lives of the respective assets, generally three to seven years, except for patents, which are amortized over the lesser of their remaining life or ten years. In-process in-process Intangible assets consist of the following (in thousands): December 31, 2016 Gross Accumulated Weighted- Product related intangible assets $ 647,594 $ 520,746 6.12 Other 223,692 176,859 6.54 Total $ 871,286 $ 697,605 6.23 December 31, 2015 Gross Carrying Accumulated Weighted- Product related intangible assets $ 518,499 $ 428,832 5.58 Other 337,979 217,309 5.37 Total $ 856,478 $ 646,141 5.64 Amortization and impairment of product related intangible assets, which consists primarily of product-related technologies and patents, was $55.4 million and $127.3 million for the year ended December 31, 2016 and 2015, respectively, and is classified as a component of Cost of net revenues in the accompanying consolidated statements of income. Amortization and impairment of other intangible assets, which consist primarily of customer relationships, trade names and covenants not to compete was $15.1 million and $97.5 million for the year ended December 31, 2016 and 2015, respectively, and is classified as a component of Operating expenses in the accompanying consolidated statements of income. The Company monitors its intangible assets for indicators of impairment. If the Company determines that an impairment has occurred, it will write-down the intangible asset to its fair value. For certain intangible assets where the unamortized balances exceed the undiscounted future net cash flows, the Company measures the amount of the impairment by calculating the amount by which the carrying values exceed the estimated fair values, which are based on projected discounted future net cash flows. During the year ended December 31, 2015, the Company tested certain intangible assets for recoverability due to changes in facts and circumstances associated with the shift in strategic focus and reduced profitability expectations. As a result, due to disruptions in the business as a result of the announced plan to explore strategic alternatives, the Company identified certain definite-lived intangible assets, primarily customer relationships from the acquisition of ByteMobile, that were impaired and recorded non-cash non-recurring Estimated future amortization expense of intangible assets with finite lives as of December 31, 2016 is as follows (in thousands): Year ending December 31, 2017 $ 53,848 2018 48,455 2019 27,829 2020 14,061 2021 7,923 Thereafter 21,565 Total $ 173,681
Software Development Costs	Software Development Costs The authoritative guidance requires certain internal software development costs related to software to be sold to be capitalized upon the establishment of technological feasibility. The Company’s software development costs incurred subsequent to achieving technological feasibility have not been significant and substantially all software development costs have been expensed as incurred.
Internal Use Software	Internal Use Software In accordance with the authoritative guidance, the Company capitalizes external direct costs of materials and services and internal costs such as payroll and benefits of those employees directly associated with the development of new functionality in internal use software. The amount of costs capitalized in 2016 and 2015 relating to internal use software was $29.2 million and $32.4 million, respectively. These costs are being amortized over the estimated useful life of the software, which is generally three to seven years, and are included in property and equipment in the accompanying consolidated balance sheets. The total amounts charged to expense relating to internal use software was approximately $37.8 million, $36.1 million and $30.9 million, during the years ended December 31, 2016, 2015 and 2014, respectively. The Company capitalized costs related to internally developed computer software to be sold as a service related to its Cloud Services products, incurred during the application development stage, of $18.2 million and $16.3 million, during the years ended December 31, 2016 and December 31, 2015, respectively, and is amortizing these costs over the expected lives of the related services, which is generally two years, and are included in property and equipment in the accompanying consolidated balance sheets. The total amounts charged to expense relating to internally developed computer software to be sold as a service was approximately $16.8 million, $9.2 million and $5.5 million, during the years ended December 31, 2016, 2015 and 2014, respectively.
Revenue Recognition	Revenue Recognition Net revenues include the following categories: Product and licenses, SaaS, License updates and maintenance and Professional services. Product and licenses revenues primarily represent fees related to the licensing of the Company’s software and hardware appliances. These revenues are reflected net of sales allowances, cooperative advertising agreements, partner incentive programs and provisions for returns. SaaS revenues consist primarily of fees related to online service agreements, which are recognized ratably over the contract term, which is typically 12 months. In addition, SaaS revenues may also include set-up add-on The Company recognizes revenue when it is earned and when all of the following criteria are met: (1) persuasive evidence of the arrangement exists; (2) delivery has occurred or the service has been provided and the Company has no remaining obligations; (3) the fee is fixed or determinable; and (4) collectability is probable. The majority of the Company’s product and license revenue consists of revenue from the sale of software products. Software sales generally include a perpetual license to the Company’s software and is subject to the industry specific software revenue recognition guidance. In accordance with this guidance, the Company allocates revenue to license updates related to its stand-alone software and any other undelivered elements of the arrangement based on vendor specific objective evidence (“VSOE”) of fair value of each element and such amounts are deferred until the applicable delivery criteria and other revenue recognition criteria described above have been met. The balance of the revenues, net of any discounts inherent in the arrangement, is recognized at the outset of the arrangement using the residual method as the product licenses are delivered. If management cannot objectively determine the fair value of each undelivered element based on VSOE of fair value, revenue recognition is deferred until all elements are delivered, all services have been performed, or until fair value can be objectively determined. For hardware appliance and software transactions, the arrangement consideration is allocated to stand-alone software deliverables as a group and the non-software The Citrix Service Provider (“CSP”) program provides subscription-based services in which the CSP partners host software services to their end users. The fees from the CSP program are recognized based on usage and as the CSP services are provided to their end users. For the Company’s non-software The Company’s Cloud Services offerings are considered hosted service arrangements per the authoritative guidance, or SaaS. In the normal course of business, the Company is not obligated to accept product returns from its distributors under any conditions, unless the product item is defective in manufacture. The Company establishes provisions for estimated returns, as well as other sales allowances, concurrently with the recognition of revenue. The provisions are established based upon consideration of a variety of factors, including, among other things, recent and historical return rates for both specific products and distributors and the impact of any new product releases and projected economic conditions. Product returns are provided for in the consolidated financial statements and have historically been within management’s expectations. Allowances for estimated product returns amounted to approximately $2.0 million and $1.4 million at December 31, 2016 and December 31, 2015, respectively. The Company also records estimated reductions to revenue for customer programs and incentive offerings including volume-based incentives. The Company could take actions to increase its customer incentive offerings, which could result in an incremental reduction to revenue at the time the incentive is offered.
Product Concentration	Product Concentration The Company derives a substantial portion of its revenues from its Workspace Services solutions, which include its XenDesktop and XenApp products and related services, and anticipates that these products and future derivative products and product lines based upon this technology will continue to constitute a majority of its revenue. The Company could experience declines in demand for its Workspace Services solutions and other products, whether as a result of general economic conditions, the delay or reduction in technology purchases, new competitive product releases, price competition, lack of success of its strategic partners, technological change or other factors. Additionally, the Company’s Delivery Networking products generate revenues from a limited number of customers. As a result, if the Delivery Networking product grouping loses certain customers or one or more such customers significantly decreases its orders, the Company’s business, results of operations and financial condition could be adversely affected.
Cost of Net Revenues	Cost of Net Revenues Cost of product and license revenues consists primarily of hardware, shipping expense, royalties, product media and duplication, manuals and packaging materials. In addition, the Company is a party to licensing agreements with various entities, which give the Company the right to use certain software code in its products or in the development of future products in exchange for the payment of fixed fees or amounts based upon the sales of the related product. The licensing agreements generally have terms ranging from one to five years, and generally include renewal options. However, some agreements are perpetual unless expressly terminated. Royalties and other costs related to these agreements are also included in Cost of net revenues. Cost of services and maintenance revenues consists primarily of compensation and other personnel-related costs of providing technical support and consulting, as well as the costs related to providing the Company’s software as a service offerings. Also included in Cost of net revenues is amortization of product related intangible assets and impairment of product related intangible assets.
Foreign Currency	Foreign Currency The functional currency for all of the Company’s wholly-owned foreign subsidiaries is the U.S. dollar. Monetary assets and liabilities of such subsidiaries are remeasured into U.S. dollars at exchange rates in effect at the balance sheet date, and revenues and expenses are remeasured at average rates prevailing during the year. Effective January 1, 2015, the functional currency of the Company’s wholly-owned foreign subsidiaries became the U.S. dollar as a result of a reorganization in the foreign subsidiaries’ operations. Prior to January 1, 2015, the functional currency of the Company’s wholly-owned foreign subsidiaries was the currency of the country in which each subsidiary is located. The Company translated assets and liabilities of these foreign subsidiaries at exchange rates in effect at the balance sheet date and included accumulated net translation adjustments in equity as a component of Accumulated other comprehensive loss. The change in functional currency is applied on a prospective basis, therefore any gains and losses that were previously recorded in Accumulated other comprehensive loss remain unchanged from January 1, 2015. Foreign currency transaction gains and losses are the result of exchange rate changes on transactions denominated in currencies other than the functional currency, including U.S. dollars. The remeasurement of those foreign currency transactions is included in determining net income or loss for the period of exchange.
Derivatives and Hedging Activities	Derivatives and Hedging Activities In accordance with the authoritative guidance, the Company records derivatives at fair value as either assets or liabilities on the balance sheet. For derivatives that are designated as and qualify as effective cash flow hedges, the portion of gain or loss on the derivative instrument effective at offsetting changes in the hedged item is reported as a component of Accumulated other comprehensive loss and reclassified into earnings as operating expense, net, when the hedged transaction affects earnings. Derivatives not designated as hedging instruments are adjusted to fair value through earnings as Other expense, net, in the period during which changes in fair value occur. The application of the authoritative guidance could impact the volatility of earnings. The Company formally documents all relationships between hedging instruments and hedged items, as well as its risk-management objective and strategy for undertaking various hedge transactions. This process includes attributing all derivatives that are designated as cash flow hedges to floating rate assets or liabilities or forecasted transactions. The Company also formally assesses, both at the inception of the hedge and on an ongoing basis, whether each derivative is highly effective in offsetting changes in cash flows of the hedged item. Fluctuations in the value of the derivative instruments are generally offset by changes in the hedged item; however, if it is determined that a derivative is not highly effective as a hedge or if a derivative ceases to be a highly effective hedge, the Company will discontinue hedge accounting prospectively for the affected derivative. The Company is exposed to risk of default by its hedging counterparties. Although this risk is concentrated among a limited number of counterparties, the Company’s foreign exchange hedging policy attempts to minimize this risk by placing limits on the amount of exposure that may exist with any single financial institution at a time.
Pension Liability	Pension Liability The Company provides retirement benefits to certain employees who are not U.S. based. Generally, benefits under these programs are based on an employee’s length of service and level of compensation. The majority of these programs are commonly referred to as termination indemnities, which provide retirement benefits in accordance with programs mandated by the governments of the countries in which such employees work. The Company had accrued $13.2 million and $13.8 million for these pension liabilities at December 31, 2016 and 2015, respectively. Expenses for the programs for 2016, 2015 and 2014 amounted to $2.5 million, $3.8 million and $3.2 million, respectively.
Advertising Costs	Advertising Costs The Company expenses advertising costs as incurred. The Company has advertising agreements with, and purchases advertising from, online media providers to advertise its products. The Company also has cooperative advertising agreements with certain distributors and resellers whereby the Company will reimburse distributors and resellers for qualified advertising of Company products. Reimbursement is made once the distributor, reseller or provider provides substantiation of qualified expenses. The Company estimates the impact of these expenses and recognizes them at the time of product sales as a reduction of net revenue in the accompanying consolidated statements of income. The total costs the Company recognized related to advertising were approximately $72.8 million, $70.7 million and $63.6 million, during the years ended December 31, 2016, 2015 and 2014, respectively.
Income Taxes	Income Taxes The Company and one or more of its subsidiaries is subject to United States federal income taxes, as well as income taxes of multiple state and foreign jurisdictions. The Company is currently not subject to a U.S. federal income tax examination. With few exceptions, the Company is no longer subject to U.S., federal, state and local, or non-U.S. In the ordinary course of global business, there are transactions for which the ultimate tax outcome is uncertain; thus, judgment is required in determining the worldwide provision for income taxes. The Company provides for income taxes on transactions based on its estimate of the probable liability. The Company adjusts its provision as appropriate for changes that impact its underlying judgments. Changes that impact provision estimates include such items as jurisdictional interpretations on tax filing positions based on the results of tax audits and general tax authority rulings. Due to the evolving nature of tax rules combined with the large number of jurisdictions in which the Company operates, estimates of its tax liability and the realizability of its deferred tax assets could change in the future, which may result in additional tax liabilities and adversely affect the Company’s results of operations, financial condition and cash flows. The Company is required to estimate its income taxes in each of the jurisdictions in which it operates as part of the process of preparing its consolidated financial statements. The authoritative guidance requires a valuation allowance to reduce the deferred tax assets reported if, based on the weight of the evidence, it is more likely than not that some portion or all of the deferred tax assets will not be realized. The Company reviews deferred tax assets periodically for recoverability and makes estimates and judgments regarding the expected geographic sources of taxable income and gains from investments, as well as tax planning strategies in assessing the need for a valuation allowance.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Significant estimates made by management include the provision for doubtful accounts receivable, the provision to reduce obsolete or excess inventory to market, the provision for estimated returns, as well as sales allowances, the assumptions used in the valuation of stock-based awards, the assumptions used in the discounted cash flows to mark certain of its investments to market, the valuation of the Company’s goodwill, net realizable value of product related and other intangible assets, the fair value of convertible senior notes, the provision for lease losses, the provision for income taxes and the amortization and depreciation periods for intangible and long-lived assets. While the Company believes that such estimates are fair when considered in conjunction with the consolidated financial position and results of operations taken as a whole, the actual amounts of such items, when known, will vary from these estimates.
Accounting for Stock-Based Compensation Plans	Accounting for Stock-Based Compensation Plans The Company has various stock-based compensation plans for its employees and outside directors and accounts for stock-based compensation arrangements in accordance with the authoritative guidance, which requires the Company to measure and record compensation expense in its consolidated financial statements using a fair value method. See Note 7 for further information regarding the Company’s stock-based compensation plans.
Earnings per Share	Earnings per Share Basic earnings per share is calculated by dividing income available to stockholders by the weighted-average number of common shares outstanding during each period. Diluted earnings per share is computed using the weighted average number of common and dilutive common share equivalents outstanding during the period. Dilutive common share equivalents consist of shares issuable upon the vesting or exercise of stock awards (calculated using the treasury stock method) during the period they were outstanding. Certain shares under the Company’s stock-based compensation programs were excluded from the computation of diluted earnings per share due to their anti-dilutive effect for the respective periods in which they were outstanding. Additionally, the computation of diluted earnings per share does not include the effect of the potential outstanding common stock from the Company’s convertible senior notes and warrants because the effect would have been anti-dilutive. The reconciliation of the numerator and denominator of the earnings per share calculation is presented in Note 15.
Reclassifications	Reclassifications Certain reclassifications of the prior years’ amounts have been made to conform to the current year’s presentation.
New Accounting Pronouncements	RECENT ACCOUNTING PRONOUNCEMENTS In January 2017, the Financial Accounting Standards Board issued an accounting standard update on the accounting for business combinations by clarifying the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions or disposals of assets or businesses. The new guidance is effective for annual and interim periods beginning after December 15, 2017. The Company is currently evaluating the potential impact of this standard on its financial position and results of operations. In October 2016, the Financial Accounting Standards Board issued an accounting standard update on the accounting for income taxes, which requires entities to recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transaction occurs as opposed to deferring tax consequences and amortizing them into future periods. This update is effective for annual and interim periods beginning after December 15, 2017, with early adoption permitted. A modified retrospective approach with a cumulative-effect adjustment directly to retained earnings at the beginning of the period of adoption is required. The Company does not expect the adoption of this standard to have a material impact on its consolidated financial position or results of operations. In March 2016, the Financial Accounting Standards Board issued an accounting standard update on the accounting of stock-based compensation. The guidance requires the recognition of the income tax effects of awards in the income statement when the awards vest or are settled, thus eliminating additional paid in capital pools. The guidance also allows for the employer to repurchase more of an employee’s shares for tax withholding purposes without triggering liability accounting. In addition, the guidance allows for a policy election to account for forfeitures as they occur rather than on an estimated basis. The new guidance is effective for annual reporting periods beginning after December 15, 2016. Early adoption is permitted. The Company is currently evaluating the potential impact of this standard on its financial position and results of operations. In February 2016, the Financial Accounting Standards Board issued an accounting standard update on the accounting of leases. The new guidance requires that lessees in a leasing arrangement recognize a right-of-use In April 2015, the Financial Accounting Standards Board issued an accounting standard update on the presentation of debt issuance costs. The new guidance requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The Company adopted this standard effective January 1, 2016 and retroactively adjusted the long-term debt liability presented as of December 31, 2015 by reducing the long-term debt liability by the amount of the deferred financing costs of $13.9 million and reducing the deferred financing costs asset included in other assets on the consolidated balance sheets by a corresponding amount. The adoption of this standard did not have a material impact on the Company’s consolidated financial position, results of operations and cash flows. In April 2015, Financial Accounting Standards Board issued an accounting standard update on customer’s accounting for fees paid in a cloud computing arrangement. The amendments in this update provide guidance about whether a cloud computing arrangement includes a software license. If a cloud computing arrangement includes a software license, the customer should account for the software license element of the arrangement consistent with other software licenses. If a cloud computing arrangement does not include a software license, the customer should account for the arrangement as a service contract. The Company adopted this standard effective January 1, 2016 on a prospective basis. Adoption of this standard did not have a material impact on the Company’s financial position and results of operations. In May 2014, the Financial Accounting Standards Board issued an accounting standard update on revenue recognition. The new guidance creates a single, principle-based model for revenue recognition and expands and improves disclosures about revenue. In July 2015, the Financial Accounting Standards Board issued an accounting standard update that defers the effective date of the new revenue recognition standard by one year. The new guidance is effective for annual reporting periods beginning on or after December 15, 2017, and must be adopted using either a full retrospective approach for all periods presented in the period of adoption or a modified retrospective approach. The Company has completed its assessment of its information technology systems, data and processes related to the implementation of this accounting standard. Additionally, the Company has substantially completed its information technology system design and solution development, and will commence implementation of the solution in the first quarter of fiscal 2017. The Company expects to adopt the accounting standard update on a modified retrospective basis in the first quarter of fiscal 2018, and is currently evaluating the potential impact of this standard on its financial position and results of operations. Under the new standard the Company expects to capitalize and amortize certain commissions over the expected customer life rather than expensing them as incurred. Additionally, under the new standard, the Company would be required to recognize term license revenues upfront at time of delivery rather than ratably over the related contract period. The Company expects revenue recognition related to perpetual software, hardware, cloud offerings and professional services to remain substantially unchanged.

Significant Accounting Polici33

Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Summary of Property and Equipment	Property and equipment consist of the following: December 31, 2016 2015 (In thousands) Buildings $ 76,152 $ 76,152 Computer equipment 170,252 227,079 Software 350,195 309,583 Equipment and furniture 71,182 78,201 Leasehold improvements 164,090 178,228 831,871 869,243 Less: accumulated depreciation and amortization (602,433 ) (613,796 ) Assets under construction 15,747 9,886 Land 16,769 16,769 Total $ 261,954 $ 282,102
Schedule of Change in Goodwill	The following table presents the change in goodwill during 2016 and 2015 (in thousands): Balance at Additions Other Balance at Balance at Additions Other Balance at Goodwill $ 1,585,621 $ 897 (1 ) $ (625 ) (2) $ 1,585,893 $ 1,519,436 $ 66,925 (3) $ (740 ) (4) $ 1,585,621 (1) Amount relates to preliminary purchase price allocation of goodwill associated with the 2016 business combination. See Note 3 for more information regarding the Company’s acquisitions. (2) Amount relates to goodwill associated with the sale of the Company’s CloudPlatform and CloudPortal Business Manager products and to adjustments to the preliminary purchase price allocation associated with 2015 acquisitions. See Note 3 for more information regarding the Company’s acquisitions and divestitures. (3) Amount primarily relates to 2015 acquisitions. See Note 3 for more information regarding the Company’s acquisitions. (4) Amount primarily relates to adjustments to purchase price allocations for certain acquisitions.
Schedule of Intangible Assets	Intangible assets consist of the following (in thousands): December 31, 2016 Gross Accumulated Weighted- Product related intangible assets $ 647,594 $ 520,746 6.12 Other 223,692 176,859 6.54 Total $ 871,286 $ 697,605 6.23 December 31, 2015 Gross Carrying Accumulated Weighted- Product related intangible assets $ 518,499 $ 428,832 5.58 Other 337,979 217,309 5.37 Total $ 856,478 $ 646,141 5.64
Schedule of Estimated Future Amortization Expense	Estimated future amortization expense of intangible assets with finite lives as of December 31, 2016 is as follows (in thousands): Year ending December 31, 2017 $ 53,848 2018 48,455 2019 27,829 2020 14,061 2021 7,923 Thereafter 21,565 Total $ 173,681

Investments (Tables)

Investments (Tables)	12 Months Ended
	Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Schedule of Investments in Available-for-sale Securities at Fair Values	Investments in available-for-sale December 31, 2016 December 31, 2015 Description of the Securities Amortized Gross Gross Fair Value Amortized Gross Gross Fair Value Agency securities $ 411,963 $ 699 $ (1,169 ) $ 411,493 $ 530,981 $ 757 $ (1,216 ) $ 530,522 Corporate securities 842,887 193 (2,114 ) 840,966 699,060 90 (1,929 ) 697,221 Municipal securities 9,989 3 (4 ) 9,988 14,872 14 (8 ) 14,878 Government securities 445,083 135 (600 ) 444,618 152,376 9 (340 ) 152,045 Total $ 1,709,922 $ 1,030 $ (3,887 ) $ 1,707,065 $ 1,397,289 $ 870 $ (3,493 ) $ 1,394,666

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2016
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value on a Recurring Basis	Assets and Liabilities Measured at Fair Value on a Recurring Basis As of December 31, Quoted Prices In Significant Significant (in thousands) Assets: Cash and cash equivalents: Cash $ 528,637 $ 528,637 $ — $ — Money market funds 224,765 224,765 — — Corporate securities 82,693 — 82,693 — Available-for-sale Agency securities 411,493 — 411,493 — Corporate securities 840,966 — 839,968 998 Municipal securities 9,988 — 9,988 — Government securities 444,618 — 444,618 — Prepaid expenses and other current assets: Foreign currency derivatives 2,506 — 2,506 — Total assets $ 2,545,666 $ 753,402 $ 1,791,266 $ 998 Accrued expenses and other current liabilities: Foreign currency derivatives 4,435 — 4,435 — Total liabilities $ 4,435 $ — $ 4,435 $ — As of December 31, Quoted Prices In Significant Significant (in thousands) Assets: Cash and cash equivalents: Cash $ 204,200 $ 204,200 $ — $ — Money market funds 102,968 102,968 — — Corporate securities 3,588 — 3,588 — Available-for-sale Agency securities 530,522 — 530,522 — Corporate securities 697,221 — 695,809 1,412 Municipal securities 14,878 — 14,878 — Government securities 152,045 — 152,045 — Prepaid expenses and other current assets: Foreign currency derivatives 1,063 — 1,063 — Total assets $ 1,706,485 $ 307,168 $ 1,397,905 $ 1,412 Accrued expenses and other current liabilities: Foreign currency derivatives 3,678 — 3,678 — Total liabilities $ 3,678 $ — $ 3,678 $ —
Fair Value, by Balance Sheet Grouping	As of December 31, 2016, the fair value of the Convertible Notes, which was determined based on inputs that are observable in the market (Level 2) based on the closing trading price per $100 as of the last day of trading for the year ended December 31, 2016, and carrying value of debt instruments (carrying value excludes the equity component of the Company’s Convertible Notes classified in equity) was as follows (in thousands): Fair Value Carrying Value Convertible Senior Notes $ 1,674,688 $ 1,348,156

Accrued Expenses and Other Cu36

Accrued Expenses and Other Current Liabilities (Tables)	12 Months Ended
	Dec. 31, 2016
Payables and Accruals [Abstract]
Schedule of Accrued Expenses and Other Current Liabilities	Accrued expenses consist of the following: December 31, 2016 2015 (In thousands) Accrued compensation and employee benefits $ 143,666 $ 161,411 Other accrued expenses 113,133 120,470 Total $ 256,799 $ 281,881

Employee Stock-based Compensa37

Employee Stock-based Compensation and Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions	The Company used the Black-Scholes model to estimate the fair value of its Employee Stock Purchase Plan awards with the following weighted-average assumptions: Year Ended Year Ended December 31, 2016 December 31, 2015 Expected volatility factor 0.27-0.41 0.35 Risk free interest rate 0.25%-0.42 % 0.25 % Expected dividend yield 0 % 0 % Expected life (in years) 0.5 0.5
Schedule of Total Stock-based Compensation Recognized by Income Statement Classification	The detail of the total stock-based compensation recognized by income statement classification is as follows (in thousands): Income Statement Classifications 2016 2015 2014 Cost of services and maintenance revenues $ 2,179 $ 1,924 $ 1,890 Research and development 38,578 38,910 49,026 Sales, marketing and services 48,514 45,041 57,550 General and administrative 63,468 42,387 45,476 Total $ 152,739 $ 128,262 $ 153,942
Schedule of Assumptions Used to Value Nonvested Share Grants	The grant date fair value of the non-vested March 2016 January 2016 March 2015 March 2014 Expected volatility factor 0.29 - 0.39 0.29 - 0.37 0.14 - 0.29 0.19 - 0.38 Risk free interest rate 0.91 % 1.10 % 0.85 % 0.81 % Expected dividend yield 0 % 0 % 0 % 0 %
Schedule of Nonvested Stock Unit Activity	The following table summarizes the Company’s non-vested Number Weighted-Average Non-vested 5,147,926 $ 65.00 Granted 2,538,589 76.27 Vested (2,472,217 ) 66.25 Forfeited (822,462 ) 65.59 Non-vested 4,391,836 70.67

Commitment and Contingencies (T

Commitment and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Schedule of Lease Commitments	Lease commitments under non-cancelable non-cancelable Operating Sublease (In thousands) Years ending December 31, 2017 $ 55,097 $ 218 2018 48,952 204 2019 46,934 — 2020 39,959 — 2021 35,035 — Thereafter 141,659 — Total $ 367,636 $ 422 * Citrix will remain liable to the lessor for the duration of certain GoTo Business leases of approximately $6.8 million.

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2016
Income Tax Disclosure [Abstract]
United States and Foreign Components of Income Before Income Taxes	The United States and foreign components of income before income taxes are as follows: 2016 2015 2014 (In thousands) United States $ 59,344 $ (135,978 ) $ (39,323 ) Foreign 468,426 300,562 187,638 Total $ 527,770 $ 164,584 $ 148,315
Components of the Provision for Income Taxes	The components of the provision for income taxes are as follows: 2016 2015 2014 (In thousands) Current: Federal $ 18,832 $ (12,450 ) $ (11,778 ) Foreign 52,978 40,613 28,126 State 7,759 6,523 3,804 Total current 79,569 34,686 20,152 Deferred: Federal (7,688 ) (69,104 ) (27,493 ) Foreign (3,139 ) (2,991 ) (1,298 ) State (10,827 ) (13,140 ) (10,265 ) Total deferred (21,654 ) (85,235 ) (39,056 ) Total provision $ 57,915 $ (50,549 ) $ (18,904 )
Components of Deferred Tax Assets and Liabilities	The following table presents the breakdown of net deferred tax assets: December 31, 2016 2015 (In thousands) Deferred tax assets $ 233,900 $ 207,194 Deferred tax liabilities (1,472 ) (2,240 ) Total net deferred tax assets $ 232,428 $ 204,954 The significant components of the Company’s deferred tax assets and liabilities consisted of the following: December 31, 2016 2015 (In thousands) Deferred tax assets: Accruals and reserves $ 41,094 $ 33,407 Deferred revenue 95,969 82,378 Tax credits 50,072 41,444 Net operating losses 41,986 50,143 Other 267 4,296 Stock based compensation 34,349 40,660 Transaction costs 557 511 Valuation allowance (14,156 ) (16,673 ) Total deferred tax assets 250,138 236,166 Deferred tax liabilities: Depreciation and amortization 1,933 (7,626 ) Acquired technology (8,524 ) (17,778 ) Prepaid expenses (11,119 ) (5,808 ) Total deferred tax liabilities (17,710 ) (31,212 ) Total net deferred tax assets $ 232,428 $ 204,954
Reconciliation of the Company's Effective Tax Rate to the Statutory Federal Rate	A reconciliation of the Company’s effective tax rate to the statutory federal rate is as follows: Year Ended December 31, 2016 2015 2014 Federal statutory taxes 35.0 % 35.0 % 35.0 % State income taxes, net of federal tax benefit 0.8 (1.0 ) — Foreign operations (21.6 ) (41.1 ) (26.2 ) Permanent differences 3.2 13.9 8.0 Change in deferred tax liability related to acquired intangibles (0.8 ) (12.6 ) (10.9 ) Tax credits (7.9 ) (20.7 ) (21.4 ) Stock option compensation 0.3 0.8 3.4 Change in accruals for uncertain tax positions 2.2 (5.9 ) (1.8 ) Other (0.2 ) 0.9 1.2 11.0 % (30.7 )% (12.7 )%
Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits	A reconciliation of the beginning and ending amount of unrecognized tax benefits for the years ended December 31, 2016 and 2015 is as follows (in thousands): Balance at January 1, 2015 $ 66,918 Additions based on tax positions related to the current year 6,613 Additions for tax positions of prior years 4,675 Reductions related to the expiration of statutes of limitations (9,521 ) Settlements (14,064 ) Balance at December 31, 2015 54,621 Additions based on tax positions related to the current year $ 11,588 Additions for tax positions of prior years 4,759 Reductions related to the expiration of statutes of limitations (1,167 ) Balance at December 31, 2016 $ 69,801

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2016
Segment Reporting [Abstract]
Identifiable and Long-Lived Assets by Product Grouping and Countries	Long-lived assets consist of property and equipment, net, and are shown below. December 31, 2016 2015 (In thousands) Property and equipment, net: United States $ 197,077 $ 214,580 United Kingdom 25,321 28,851 Other countries 39,556 38,671 Total property and equipment, net $ 261,954 $ 282,102
Revenues by Product Grouping	The following table presents revenues by segment and geographic location, for the years ended: December 31, 2016 2015 2014 (In thousands) Net revenues: Americas $ 1,598,896 $ 1,487,364 $ 1,394,112 EMEA 863,517 873,620 863,179 Asia-Pacific 273,667 285,170 305,773 Total net revenues $ 2,736,080 $ 2,646,154 $ 2,563,064
Revenues by Geographic Location	The following table presents revenues by segment and geographic location, for the years ended: December 31, 2016 2015 2014 (In thousands) Net revenues: Americas $ 1,598,896 $ 1,487,364 $ 1,394,112 EMEA 863,517 873,620 863,179 Asia-Pacific 273,667 285,170 305,773 Total net revenues $ 2,736,080 $ 2,646,154 $ 2,563,064

Convertible Senior Notes (Table

Convertible Senior Notes (Tables)	12 Months Ended
	Dec. 31, 2016
Debt Disclosure [Abstract]
Convertible Debt	The Convertible Notes consist of the following (in thousands): December 31, December 31, Liability component Principal $ 1,437,500 $ 1,437,500 Less: note discount and issuance costs (89,344 ) (112,508 ) Net carrying amount $ 1,348,156 $ 1,324,992 Equity component Temporary Equity $ 79,495 $ — Additional paid-in-capital 83,374 162,869 Total equity (including temporary equity) $ 162,869 $ 162,869
Schedule of Interest Expense Recognized Related to Convertible Notes	The following table includes total interest expense recognized related to the Convertible Notes (in thousands): Year Ended December 31, 2016 2015 2014 Contractual interest expense $ 7,187 $ 7,188 $ 4,792 Amortization of debt issuance costs 3,863 3,974 2,461 Amortization of debt discount 33,014 32,039 20,832 $ 44,064 $ 43,201 $ 28,085

Derivative Financial Instrume42

Derivative Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of the Fair Values of Derivative Instruments	Fair Values of Derivative Instruments Asset Derivatives Liability Derivatives (In thousands) December 31, 2016 December 31, 2015 December 31, 2016 December 31, 2015 Derivatives Designated as Hedging Balance Sheet Fair Balance Sheet Fair Balance Sheet Fair Balance Sheet Fair Value Foreign currency forward contracts Prepaid $ 460 Prepaid $ 436 Accrued $ 3,816 Accrued $ 2,895 Asset Derivatives Liability Derivatives (In thousands) December 31, 2016 December 31, 2015 December 31, 2016 December 31, 2015 Derivatives Not Designated as Hedging Balance Sheet Fair Balance Sheet Fair Balance Sheet Fair Balance Sheet Fair Value Foreign currency forward contracts Prepaid $ 2,046 Prepaid $ 627 Accrued $ 619 Accrued $ 783
Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss)	The Effect of Derivative Instruments on Financial Performance For the Year ended December 31, (In thousands) Derivatives in Cash Flow Hedging Relationships Amount of (Loss) Gain Location of Loss Reclassified Amount of Loss Reclassified from 2016 2015 2016 2015 Foreign currency forward contracts $ (875 ) $ 6,090 Operating expenses $ (1,763 ) $ (13,027 )
Schedule of Effect of Derivative Instruments on Financial Performance	For the Year ended December 31, (In thousands) Derivatives Not Designated as Hedging Instruments Location of (Loss) Gain Recognized Amount of (Loss) Gain Recognized 2016 2015 Foreign currency forward contracts Other expense, net $ (1,030 ) $ 1,669
Schedule of Net Notional Foreign Currency Forward Contracts Outstanding	As of December 31, 2016, the Company had the following net notional foreign currency forward contracts outstanding (in thousands): Foreign Currency Currency Australian dollars AUD 8,200 Brazilian Real BRL 8,300 British pounds sterling GBP 283 Canadian dollars CAD 2,850 Chinese renminbi CNY 48,300 Danish krone DKK 21,735 Euro EUR 8,307 Hong Kong dollars HKD 32,500 Indian rupees INR 3,875 Japanese yen JPY 685,319 Singapore dollars SGD 9,967 Swiss francs CHF 37,700

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2016
Earnings Per Share [Abstract]
Net Income per Share Basic and Diluted	The following table sets forth the computation of basic and diluted net income per share (in thousands, except per share information): Year Ended December 31, 2016 2015 2014 Numerator: Income from continuing operations $ 469,855 $ 215,133 $ 167,219 Income from discontinued operations, net of income taxes 66,257 104,228 84,504 Net income $ 536,112 $ 319,361 $ 251,723 Denominator: Denominator for basic earnings per share—weighted-average shares outstanding 155,134 158,874 169,879 Effect of dilutive employee stock awards: Employee stock awards 1,950 1,488 1,391 Denominator for diluted earnings per share—weighted-average shares outstanding 157,084 160,362 171,270 Basic earnings per share: Income from continuing operations $ 3.03 $ 1.35 $ 0.98 Income from discontinued operations, net of income taxes 0.43 0.66 0.50 Basic earnings per share $ 3.46 $ 2.01 $ 1.48 Diluted earnings per share Income from continuing operations $ 2.99 $ 1.34 $ 0.98 Income from discontinued operations, net of income taxes 0.42 0.65 0.49 Diluted earnings per share $ 3.41 $ 1.99 $ 1.47 Anti-dilutive weighted-average shares from stock awards 322 2,151 3,026

Comprehensive Income (Tables)

Comprehensive Income (Tables)	12 Months Ended
	Dec. 31, 2016
Equity [Abstract]
Schedule of Changes in Accumulated Other Comprehensive Income by Component	The changes in Accumulated other comprehensive loss by component, net of tax, are as follows: Foreign currency Unrealized available-for- sale securities Unrealized Other Total (In thousands) Balance at December 31, 2015 $ (16,346 ) $ (2,900 ) $ (2,255 ) $ (7,026 ) $ (28,527 ) Other comprehensive income (loss) before reclassifications — 996 (2,638 ) 906 (736 ) Amounts reclassified from accumulated other comprehensive loss — (1,204 ) 1,763 — 559 Net current period other comprehensive (loss) income — (208 ) (875 ) 906 (177 ) Balance at December 31, 2016 $ (16,346 ) $ (3,108 ) $ (3,130 ) $ (6,120 ) $ (28,704 )
Schedule of Reclassification out of Accumulated Other Comprehensive Income	Reclassifications out of Accumulated other comprehensive loss are as follows: For the Twelve Months Ended December 31, 2016 (In thousands) Details about accumulated other Amount reclassified from Affected line item in the Unrealized net gains on available-for-sale $ (1,204 ) Other expense, net Unrealized net losses on cash flow hedges 1,763 Operating expenses * $ 559 * Operating expenses amounts allocated to Research and development, Sales, marketing and services, and General and administrative are not individually significant.

Restructuring (Tables)

Restructuring (Tables)	12 Months Ended
	Dec. 31, 2016
Restructuring and Related Activities [Abstract]
Schedule of Restructuring Charges by Segment	For the years ended December 31, 2016, 2015 and 2014, restructuring charges were comprised of the following (in thousands): Year Ended December 31, 2016 2015 2014 Employee severance and related costs $ 41,054 $ 74,879 $ 14,092 Consolidation of leased facilities 28,857 22,100 — Reversal of previous charges (2,510 ) (286 ) — Other — 1,968 — Total Restructuring charges $ 67,401 $ 98,661 $ 14,092
Schedule of Restructuring Accruals	The activity in the Company’s restructuring accruals for the year ended December 31, 2016 is summarized as follows (in thousands): Total Balance at January 1, 2016 $ 40,396 Restructuring charges 67,401 Payments (69,012 ) Other 1,158 Balance at December 31, 2016 $ 39,943

Discontinued Operations (Tables

Discontinued Operations (Tables)	12 Months Ended
	Dec. 31, 2016
Discontinued Operations and Disposal Groups [Abstract]
Schedule of Discontinued Operations	Major classes of line items constituting Income from discontinued operations related to the GoTo Business: Year Ended December 31, 2016 2015 2014 (in thousands) Net revenues $ 682,185 $ 629,440 $ 579,792 Cost of net revenues 154,652 140,324 126,513 Gross margin 527,533 489,116 453,279 Operating expenses: Research and development 93,892 83,018 66,898 Sales, marketing and services 209,475 189,560 205,307 General and administrative 63,270 50,068 43,357 Amortization of other intangible assets 14,097 11,254 3,994 Restructuring 3,721 1,750 6,332 Separation 54,084 6,173 — Total operating expenses 438,539 341,823 325,888 Income from discontinued operations before income taxes 88,994 147,293 127,391 Income tax expense 22,737 43,065 42,887 Income from discontinued operations, net of income tax $ 66,257 $ 104,228 $ 84,504 Carrying amounts of major classes of assets and liabilities included as part of discontinued operations related to the GoTo Business: December 31, December 31, (in thousands) Assets Current assets: Cash $ 120,861 $ 57,762 Accounts receivable, net 44,734 45,850 Prepaid expenses and other current assets 14,094 13,115 Total current assets of discontinued operations 179,689 116,727 Property and equipment, net 81,866 91,715 Goodwill 380,917 377,101 Other intangible assets, net 54,312 73,081 Deferred tax assets, net 18,496 8,002 Other assets 3,340 3,758 Long-term assets of discontinued operations $ 538,931 $ 553,657 Total major classes of assets of discontinued operations $ 718,620 $ 670,384 Liabilities Current liabilities: Accounts payable $ 11,333 $ 15,959 Accrued expenses and other current liabilities 46,088 36,131 Current portion of deferred revenues 115,249 110,211 Total current liabilities of discontinued operations 172,670 162,301 Long-term portion of deferred revenues 4,224 7,204 Other liabilities 3,484 4,174 Long-term liabilities of discontinued operations $ 7,708 $ 11,378 Total major classes of liabilities of discontinued operations $ 180,378 $ 173,679

Organization - Additional Infor

Organization - Additional Information (Detail)	Jul. 26, 2016shares	Jan. 31, 2017Segmentshares	Dec. 31, 2016Segment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Common stock conversion ratio	1
LogMeIn shares received in disposal of GetGo	26,900,000
LogMeIn shares received in disposal as percent of Comany share outstanding	0.171844291
Fractional shares of LogMeIn received	0
Number of reportable segments | Segment			1
Subsequent Event [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of reportable segments | Segment		1
Subsequent Event [Member] | GetGo, Inc [Member] | Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations, Spinoff [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Pro rata distribution of the common stock of GetGo to stockholders		100.00%
Share issued in acquisitions		26,900,000
Common stock conversion ratio		1
LogMeIn shares received in disposal of GetGo		26,900,000
LogMeIn shares received in disposal as percent of Comany share outstanding		0.171844291
Fractional shares of LogMeIn received		0

Significant Accounting Polici48

Significant Accounting Policies - Additional Information (Detail)	1 Months Ended	3 Months Ended		12 Months Ended
	Jan. 31, 2017Segment	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2016USD ($)Segment	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Significant Accounting Policies [Line Items]
Allowance for doubtful accounts		$ 3,900,000	$ 6,200,000	$ 3,900,000	$ 6,200,000
Retirement of property and equipment				$ 118,000,000	18,300,000
Impairment of Intangible Assets, Finite-lived					$ 123,000,000
Impairment of goodwill and intangible assets		0	0
Number of reportable segments | Segment				1
Estimated useful lives of intangible assets				6 years 2 months 23 days	5 years 7 months 21 days
Finite-Lived Intangible Assets, Net			26,800,000		$ 26,800,000
Amount capitalized related to internal use software				$ 29,200,000	32,400,000
Amount expensed related to internal use software				37,800,000	36,100,000	$ 30,900,000
Capitalized costs for internally developed software to be sold as a service		18,200,000	16,300,000	18,200,000	16,300,000
Internally developed software cost charged to expense				16,800,000	9,200,000	5,500,000
Allowance for estimated product returns				2,000,000	1,400,000
Advertising costs				72,800,000	70,700,000	63,600,000
Foreign Postretirement Benefit Plan [Member]
Significant Accounting Policies [Line Items]
Accrued pension liabilities		$ 13,200,000	$ 13,800,000	13,200,000	13,800,000
Retirement benefits expense				$ 2,500,000	3,800,000	$ 3,200,000
Online Service Agreements [Member]
Significant Accounting Policies [Line Items]
Revenue recognition, period for recognition				12 months
Software Development [Member]
Significant Accounting Policies [Line Items]
Estimated useful lives of intangible assets				2 years
Minimum [Member]
Significant Accounting Policies [Line Items]
Estimated useful lives of intangible assets				3 years
Licensing agreement term				1 year
Minimum [Member] | License Update [Member]
Significant Accounting Policies [Line Items]
Revenue recognition, period for recognition				12 months
Minimum [Member] | Software Development [Member]
Significant Accounting Policies [Line Items]
Estimated useful lives of intangible assets				3 years
Maximum [Member]
Significant Accounting Policies [Line Items]
Estimated useful lives of intangible assets				7 years
Licensing agreement term				5 years
Maximum [Member] | License Update [Member]
Significant Accounting Policies [Line Items]
Revenue recognition, period for recognition				24 months
Maximum [Member] | Patents [Member]
Significant Accounting Policies [Line Items]
Estimated useful lives of intangible assets				10 years
Maximum [Member] | Software Development [Member]
Significant Accounting Policies [Line Items]
Estimated useful lives of intangible assets				7 years
Subsequent Event [Member]
Significant Accounting Policies [Line Items]
Number of reportable segments | Segment	1
Cost of Services and Maintenance Revenues [Member]
Significant Accounting Policies [Line Items]
Amortization expense				$ 55,400,000	127,300,000
Operating Expense [Member]
Significant Accounting Policies [Line Items]
Amortization expense				$ 15,100,000	97,500,000
Amortization and Impairment of Other Intangible Assets [Member]
Significant Accounting Policies [Line Items]
Impairment of Intangible Assets, Finite-lived					67,100,000
Amortization of Product Related Intangibles [Member]
Significant Accounting Policies [Line Items]
Impairment of Intangible Assets, Finite-lived					$ 55,900,000
Computer Equipment [Member]
Significant Accounting Policies [Line Items]
Estimated useful lives of property and equipment				3 years
Software [Member]
Significant Accounting Policies [Line Items]
Estimated useful lives of property and equipment				3 years
Leasehold Improvements [Member]
Significant Accounting Policies [Line Items]
Estimated useful lives of property and equipment				10 years
Equipment and Furniture [Member]
Significant Accounting Policies [Line Items]
Estimated useful lives of property and equipment				7 years
Buildings [Member]
Significant Accounting Policies [Line Items]
Estimated useful lives of property and equipment				40 years
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Arrow Group [Member]
Significant Accounting Policies [Line Items]
Concentration risk percentage				14.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Ingram Micro [Member]
Significant Accounting Policies [Line Items]
Concentration risk percentage				10.00%

Significant Accounting Polici49

Significant Accounting Policies - Summary of Property and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 831,871	$ 869,243
Less: accumulated depreciation and amortization	(602,433)	(613,796)
Total property and equipment, net	261,954	282,102
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	76,152	76,152
Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	170,252	227,079
Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	350,195	309,583
Equipment and Furniture [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	71,182	78,201
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	164,090	178,228
Asset under Construction [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	15,747	9,886
Land [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 16,769	$ 16,769

Significant Accounting Polici50

Significant Accounting Policies - Schedule of Change in Goodwill (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Beginning balance	$ 1,585,621	$ 1,519,436
Additions	897	66,925
Other	(625)	(740)
Ending balance	$ 1,585,893	$ 1,585,621

Significant Accounting Polici51

Significant Accounting Policies - Schedule of Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 871,286	$ 856,478
Accumulated Amortization	$ 697,605	$ 646,141
Weighted-Average Life Average Life	6 years 2 months 23 days	5 years 7 months 21 days
Product Related Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 647,594	$ 518,499
Accumulated Amortization	$ 520,746	$ 428,832
Weighted-Average Life Average Life	6 years 1 month 13 days	5 years 6 months 29 days
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 223,692	$ 337,979
Accumulated Amortization	$ 176,859	$ 217,309
Weighted-Average Life Average Life	6 years 6 months 14 days	5 years 4 months 13 days

Significant Accounting Polici52

Significant Accounting Policies - Schedule of Estimated Future Amortization Expense (Detail) $ in Thousands	Dec. 31, 2016USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
2,017	$ 53,848
2,018	48,455
2,019	27,829
2,020	14,061
2,021	7,923
Thereafter	21,565
Total	$ 173,681

Acquisitions and Divestitures -

Acquisitions and Divestitures - Additional Information (Detail) - USD ($) $ in Thousands, shares in Millions	Sep. 07, 2016	Jan. 08, 2016	Jan. 08, 2015	Feb. 29, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Goodwill					$ 1,585,893	$ 1,585,621	$ 1,519,436
Revenue period for earnout provision				5 years
General and Administrative Expense [Member]
Finite-Lived Intangible Assets [Line Items]
Acquisition related costs					$ 300
Norskale [Member]
Finite-Lived Intangible Assets [Line Items]
Preliminary consideration	$ 11,500
Cash acquired from the acquisition	800
Goodwill	4,700
Norskale [Member] | General and Administrative Expense [Member]
Finite-Lived Intangible Assets [Line Items]
Acquisition related costs	400
2016 Asset Acquisition [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired		$ 23,600
Sanbolic Inc [Member]
Finite-Lived Intangible Assets [Line Items]
Preliminary consideration			$ 89,400
Cash acquired from the acquisition			200
Acquisition transaction costs			$ 500
Stock options converted and assumed			37,057
Sanbolic Inc [Member] | General and Administrative Expense [Member]
Finite-Lived Intangible Assets [Line Items]
Acquisition related costs						$ 300
Core and Product Technologies [Member] | Norskale [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired	$ 8,200
Weighted average useful life	4 years

Investments - Schedule of Inves

Investments - Schedule of Investments in Available-for-sale Securities at Fair Values (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Investment [Line Items]
Amortized Cost	$ 1,709,922	$ 1,397,289
Gross Unrealized Gains	1,030	870
Gross Unrealized Losses	(3,887)	(3,493)
Fair Value	1,707,065	1,394,666
Agency Securities [Member]
Investment [Line Items]
Amortized Cost	411,963	530,981
Gross Unrealized Gains	699	757
Gross Unrealized Losses	(1,169)	(1,216)
Fair Value	411,493	530,522
Corporate Securities [Member]
Investment [Line Items]
Amortized Cost	842,887	699,060
Gross Unrealized Gains	193	90
Gross Unrealized Losses	(2,114)	(1,929)
Fair Value	840,966	697,221
Municipal Securities [Member]
Investment [Line Items]
Amortized Cost	9,989	14,872
Gross Unrealized Gains	3	14
Gross Unrealized Losses	(4)	(8)
Fair Value	9,988	14,878
Government Securities [Member]
Investment [Line Items]
Amortized Cost	445,083	152,376
Gross Unrealized Gains	135	9
Gross Unrealized Losses	(600)	(340)
Fair Value	$ 444,618	$ 152,045

Investments - Additional Inform

Investments - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Investment [Line Items]
Average remaining maturities for short-term available for sale investments	6 months
Average remaining maturities for long-term available for sale investments	2 years
Gross unrealized losses on available-for-sale investments, before tax	$ 3,887	$ 3,493
Gain on cost-method investments acquired by third parties	1,700	8,700	$ 2,900
Other Assets [Member]
Investment [Line Items]
Cost method investments	19,200	19,400
Other Income (Expense) [Member]
Investment [Line Items]
Realized gains on the sales of available-for-sale investments	1,700	800
Realized losses on the sales of available-for-sale investments	500	1,000
Cost-method Investments, Other than Temporary Impairment	$ 1,100	$ 3,300	$ 8,300

Fair Value Measurements - Asset

Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Detail) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Assets, Fair Value Disclosure [Abstract]
Total assets	$ 2,545,666	$ 1,706,485
Liabilities, Fair Value Disclosure [Abstract]
Total liabilities	4,435	3,678
Cash [Member] | Cash and Cash Equivalents [Member]
Assets, Fair Value Disclosure [Abstract]
Cash and cash equivalents	528,637	204,200
Money Market Funds [Member] | Cash and Cash Equivalents [Member]
Assets, Fair Value Disclosure [Abstract]
Cash and cash equivalents	224,765	102,968
Corporate Securities [Member] | Cash and Cash Equivalents [Member]
Assets, Fair Value Disclosure [Abstract]
Cash and cash equivalents	82,693	3,588
Corporate Securities [Member] | Available-for-sale Securities [Member]
Assets, Fair Value Disclosure [Abstract]
Available-for-sale securities	840,966	697,221
Agency Securities [Member] | Available-for-sale Securities [Member]
Assets, Fair Value Disclosure [Abstract]
Available-for-sale securities	411,493	530,522
Municipal Securities [Member] | Available-for-sale Securities [Member]
Assets, Fair Value Disclosure [Abstract]
Available-for-sale securities	9,988	14,878
Government Securities [Member] | Available-for-sale Securities [Member]
Assets, Fair Value Disclosure [Abstract]
Available-for-sale securities	444,618	152,045
Level 1 [Member]
Assets, Fair Value Disclosure [Abstract]
Total assets	753,402	307,168
Level 1 [Member] | Cash [Member] | Cash and Cash Equivalents [Member]
Assets, Fair Value Disclosure [Abstract]
Cash and cash equivalents	528,637	204,200
Level 1 [Member] | Money Market Funds [Member] | Cash and Cash Equivalents [Member]
Assets, Fair Value Disclosure [Abstract]
Cash and cash equivalents	224,765	102,968
Level 2 [Member]
Assets, Fair Value Disclosure [Abstract]
Total assets	1,791,266	1,397,905
Liabilities, Fair Value Disclosure [Abstract]
Total liabilities	4,435	3,678
Level 2 [Member] | Corporate Securities [Member] | Cash and Cash Equivalents [Member]
Assets, Fair Value Disclosure [Abstract]
Cash and cash equivalents	82,693	3,588
Level 2 [Member] | Corporate Securities [Member] | Available-for-sale Securities [Member]
Assets, Fair Value Disclosure [Abstract]
Available-for-sale securities	839,968	695,809
Level 2 [Member] | Agency Securities [Member] | Available-for-sale Securities [Member]
Assets, Fair Value Disclosure [Abstract]
Available-for-sale securities	411,493	530,522
Level 2 [Member] | Municipal Securities [Member] | Available-for-sale Securities [Member]
Assets, Fair Value Disclosure [Abstract]
Available-for-sale securities	9,988	14,878
Level 2 [Member] | Government Securities [Member] | Available-for-sale Securities [Member]
Assets, Fair Value Disclosure [Abstract]
Available-for-sale securities	444,618	152,045
Level 3 [Member]
Assets, Fair Value Disclosure [Abstract]
Total assets	998	1,412
Level 3 [Member] | Corporate Securities [Member] | Available-for-sale Securities [Member]
Assets, Fair Value Disclosure [Abstract]
Available-for-sale securities	998	1,412
Foreign Currency Derivatives [Member] | Prepaid Expenses and Other Current Assets [Member]
Assets, Fair Value Disclosure [Abstract]
Prepaid expenses and other current assets	2,506	1,063
Foreign Currency Derivatives [Member] | Accrued Expenses and Other Current Liabilities [Member]
Liabilities, Fair Value Disclosure [Abstract]
Foreign currency derivatives	4,435	3,678
Foreign Currency Derivatives [Member] | Level 2 [Member] | Prepaid Expenses and Other Current Assets [Member]
Assets, Fair Value Disclosure [Abstract]
Prepaid expenses and other current assets	2,506	1,063
Foreign Currency Derivatives [Member] | Level 2 [Member] | Accrued Expenses and Other Current Liabilities [Member]
Liabilities, Fair Value Disclosure [Abstract]
Foreign currency derivatives	$ 4,435	$ 3,678

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Other Income (Expense) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cost method investment, impairment charge	$ 1,100,000	$ 3,300,000	$ 8,300,000
Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cost-method investments, aggregate carrying amount, evaluated for impairment during the period	1,200,000	3,400,000
Cost method investments, fair value after impairment	100,000	100,000
Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member] | Other Income (Expense) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cost method investment, impairment charge	1,100,000	$ 3,300,000
Level 2 [Member] | Senior Notes Due 2019 [Member] | Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Closing trading price per $100 as of the last day of trading for the year	$ 100

Fair Value Measurements - Fair

Fair Value Measurements - Fair Value, by Balance Sheet Grouping (Detail) $ in Thousands	Dec. 31, 2016USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Convertible Senior Notes	$ 1,348,156
Senior Notes Due 2019 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Convertible Senior Notes	1,300,000
Fair Value [Member] | Senior Notes Due 2019 [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Convertible Senior Notes	1,674,688
Carrying Value [Member] | Senior Notes Due 2019 [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Convertible Senior Notes	$ 1,348,156

Accrued Expenses and Other Cu59

Accrued Expenses and Other Current Liabilities - Schedule of Accrued Expenses and Other Current Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Accounts Payable and Accrued Liabilities, Current [Abstract]
Accrued compensation and employee benefits	$ 143,666	$ 161,411
Other accrued expenses	113,133	120,470
Total	$ 256,799	$ 281,881

Employee Stock-based Compensa60

Employee Stock-based Compensation and Benefit Plans - Additional Information (Detail) $ / shares in Units, $ in Thousands	1 Months Ended				12 Months Ended
	Mar. 31, 2016$ / sharesshares	Jan. 31, 2016$ / sharesshares	Mar. 31, 2015$ / sharesshares	Mar. 31, 2014$ / sharesshares	Dec. 31, 2016USD ($)PlanInstallment$ / sharesshares	Dec. 31, 2015USD ($)shares	Dec. 31, 2014USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock-based compensation plans offered | Plan					1
Stock-based compensation | $					$ 152,739	$ 128,262	$ 153,942
Share based compensation, dividend yield					0.00%
Deferred tax asset related to stock-based compensation | $					$ 53,500	40,200	34,700
Tax benefit from compensation expense | $					$ 64,700	50,500	39,800
Maximum annual contribution per employee (as a percent)					90.00%
Contribution per dollar of employee contribution					0.50%
Matching percent					3.00%
Defined Contribution Plan, Cost Recognized | $					$ 14,000	12,100	11,100
Employer contributions, vesting period					4 years
Employer contributions, annual vesting rate					25.00%
Market Performance and Service Condition Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested stock unit awards granted to senior level employees	234,816		393,464	378,022
Performance period		3 years	3 years
Maximum percentage of market and service condition stock units that will ultimately vest			200.00%
Period to determine actual stock grant following end of performance period			60 days
Minimum overperformance against benchmark index return for maximum stock issuance, percentage			40.00%
Maximum underperformance against benchmark index return before company discontinues issuance of stock, percentage (more than 20%)			20.00%
Percent of award issued if return is negative but benchmark index is met			75.00%
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation | $					$ 135,700	$ 117,900	128,500
Share based compensation, dividend yield					0.00%	0.00%
Performance period			2 years 9 months 3 days		3 years	1 year
Maximum non-vested stock units issuable as percent of base number set forth in award agreement		100.00%
Maximum target shareholder return		10.00%
Minimum target shareholder return		5.00%
Maximum percentage of market and service condition stock units that will ultimately vest		200.00%
Target shareholder return maximum to attain 200% (percent)		30.00%
Period to determine actual stock grant following end of performance period		60 days
Interim measurement period		18 months
Share cap based on interim measurement period		33.00%
Period to determine actual stock grant following end of interim measurement period						60 days
Maximum share cap based on target shareholder return						100.00%
Fair value of awards released | $					$ 163,800	$ 132,900	118,300
Total unrecognized compensation cost related to stock-based compensation | $					$ 223,400
Total unrecognized compensation cost recognition period					2 years 22 days
Non-Vested Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation, dividend yield	0.00%	0.00%	0.00%	0.00%
Non-vested stock unit awards granted to senior level employees					2,538,589
The estimated fair value of each award | $ / shares	$ 66.18	$ 49.68	$ 61.01	$ 56.94	$ 76.27
2014 Plan [Member] | Non-Vested Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation award vesting period, number of monthly installments | Installment					12
2014 Plan [Member] | Annual Vesting on Each Anniversary [Member] | Non-Vested Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage					33.33%
2015 ESPP Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized for issuance under the Plan					16,000,000
Employee Stock Purchase Plan, maximum number of shares per period that employees can purchase					12,000
Employee Stock Purchase Plan, purchase price as a percentage of fair market value					85.00%
Employee Stock Purchase Plan, employee disqualification, ownership percent of outstanding stock					5.00%
Employee Stock Purchase Plan, total shares issued under plan (shares)					974,830
Stock-based compensation | $					$ 7,500	$ 6,500	$ 4,500
Share based compensation, dividend yield					0.00%	0.00%
2015 ESPP Plan [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Stock Purchase Plan, option to purchase shares through payroll deduction, payroll deduction amount per pay period per employee, as a percentage of base pay					1.00%
2015 ESPP Plan [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Stock Purchase Plan, option to purchase shares through payroll deduction, payroll deduction amount per pay period per employee, as a percentage of base pay					10.00%
2005 ESPP Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Stock Purchase Plan, total shares issued under plan (shares)					3,872,661
Common Stock [Member] | 2014 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized for issuance under the Plan					29,000,000
Shares reserved for issuance under the stock-based compensation plans					20,068,672
Shares available for grant under the Plan					15,584,300
Executive Officer [Member] | Non-Vested Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested stock unit awards granted to senior level employees					118,588	102,851
Total unrecognized compensation cost related to stock-based compensation | $					$ 5,300
Total unrecognized compensation cost recognition period					2 years
Total unrecognized compensation cost | $					$ 9,600	$ 1,400
Executive Officer [Member] | Minimum [Member] | Non-Vested Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period					1 year
Executive Officer [Member] | Maximum [Member] | Non-Vested Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period					3 years
Chief Executive Officer [Member] | Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested stock unit awards granted to senior level employees		220,235

Employee Stock-based Compensa61

Employee Stock-based Compensation and Benefit Plans - Assumptions Used to Value Option Grants, Stock Awards and ESPP Shares (Detail)	1 Months Ended				12 Months Ended
	Mar. 31, 2016	Jan. 31, 2016	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividend yield					0.00%
Non-Vested Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk free interest rate	0.91%	1.10%	0.85%	0.81%
Expected dividend yield	0.00%	0.00%	0.00%	0.00%
Minimum [Member] | Non-Vested Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility factor	29.00%	29.00%	14.00%	19.00%
Maximum [Member] | Non-Vested Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility factor	39.00%	37.00%	29.00%	38.00%
2015 ESPP Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility factor						0.35%
Risk free interest rate						0.25%
Expected dividend yield					0.00%	0.00%
Expected life (in years)					6 months	6 months
2015 ESPP Plan [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility factor					0.27%
Risk free interest rate					0.25%
2015 ESPP Plan [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility factor					0.41%
Risk free interest rate					0.42%

Employee Stock-based Compensa62

Employee Stock-based Compensation and Benefit Plans - Schedule of Total Stock-based Compensation Recognized by Income Statement Classification (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense	$ 152,739	$ 128,262	$ 153,942
Cost of Services and Maintenance Revenues [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense	2,179	1,924	1,890
Research and Development [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense	38,578	38,910	49,026
Sales, Marketing and Services [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense	48,514	45,041	57,550
General and Administrative Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense	$ 63,468	$ 42,387	$ 45,476

Employee Stock-based Compensa63

Employee Stock-based Compensation and Benefit Plans - Schedule of Nonvested Stock Unit Activity (Detail) - Non-Vested Stock Units [Member] - $ / shares	1 Months Ended				12 Months Ended
	Mar. 31, 2016	Jan. 31, 2016	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2016
Number of Shares
Non-vested stock units at December 31, 2015		5,147,926			5,147,926
Granted					2,538,589
Vested					(2,472,217)
Forfeited					(822,462)
Non-vested stock units at December 31, 2016					4,391,836
Weighted- Average Fair Value at Grant Date
Non-vested stock units at December 31, 2015		$ 65			$ 65
Granted	$ 66.18	$ 49.68	$ 61.01	$ 56.94	76.27
Vested					66.25
Forfeited					65.59
Non-vested stock units at December 31, 2016					$ 70.67

Capital Stock - Additional Info

Capital Stock - Additional Information (Detail) - USD ($)	1 Months Ended	3 Months Ended	12 Months Ended
	Oct. 31, 2014	Jun. 30, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Jan. 31, 2017
Class of Stock [Line Items]
Stock repurchase program, authorized amount			$ 6,800,000,000
Available to repurchase common stock			404,000,000
Amount expended on share repurchases in open market transactions			28,689,000	$ 755,704,000	$ 1,640,885,000
Shares repurchased		$ 1,500,000,000
Payments for repurchase of common stock			$ 28,689,000	$ 755,704,000	$ 1,640,885,000
Total tax withholdings for share-based compensation			830,155	679,694	560,239
Total tax withholdings for share-based compensation			$ 66,638,000	$ 46,336,000	$ 33,672,000
Preferred stock, shares authorized			5,000,000	5,000,000
Preferred stock, par value			$ 0.01	$ 0.01
Preferred stock, shares issued			0	0
Preferred stock, shares outstanding			0	0
Privately Negotiated Transaction [Member]
Class of Stock [Line Items]
Number of shares repurchased		1,700,000
Payments for repurchase of common stock		$ 101,000,000			101,000,000
Purchase from Accelerated Share Repurchase [Member]
Class of Stock [Line Items]
Number of shares repurchased	2,600,000	21,800,000
Shares repurchased		$ 1,400,000,000
Open Market Purchases [Member]
Class of Stock [Line Items]
Amount expended on share repurchases in open market transactions			$ 28,700,000	$ 755,700,000	$ 139,900,000
Number of shares repurchased			426,300	10,716,850	2,046,400
Average per share price on share repurchases in open market transactions			$ 67.30	$ 70.52	$ 68.36
Subsequent Event [Member]
Class of Stock [Line Items]
Stock repurchase program, authorized amount						$ 500,000,000

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2017
Loss Contingencies [Line Items]
Rental expense	$ 84,600,000	$ 89,900,000	$ 69,900,000
Restructuring	67,401,000	98,661,000	14,092,000
Sublease income	200,000	200,000	$ 0
Liability for loss on lease obligation	37,600,000
Purchase obligations anticipated for 2015	18,300,000
Contingent obligations to purchase inventory	24,500,000
Santa Clara Office [Member]
Loss Contingencies [Line Items]
Liability for loss on lease obligation	33,200,000
Impact on liabilities for loss on lease obligation if price per square foot assumption changed by $0.50	8,600,000
Facility Closing [Member] | 2015 Restructuring Program [Member]
Loss Contingencies [Line Items]
Restructuring	28,900,000	$ 22,100,000
GoTo Business Division [Member]
Loss Contingencies [Line Items]
Future operating lease obligation excluded due to spin-off	$ 16,600,000
Scenario, Forecast [Member]
Loss Contingencies [Line Items]
Purchase obligations beyond December 31, 2017				$ 0

Commitments and Contingencies66

Commitments and Contingencies - Schedule of Lease Commitments (Detail) $ in Thousands	Dec. 31, 2016USD ($)
Operating Leases
2,017	$ 55,097
2,018	48,952
2,019	46,934
2,020	39,959
2,021	35,035
Thereafter	141,659
Total	367,636
Sublease Income
2,017	218
2,018	204
2,019	0
2,020	0
2,021	0
Thereafter	0
Total	$ 422

Commitments and Contingencies67

Commitments and Contingencies - Schedule of Lease Commitments (Parenthetical) (Detail) $ in Thousands	Dec. 31, 2016USD ($)
Loss Contingencies [Line Items]
GoTo Business leases for which the Company remains liable	$ 367,636
GoTo Business Division [Member]
Loss Contingencies [Line Items]
GoTo Business leases for which the Company remains liable	$ 6,800

Income Taxes - United States an

Income Taxes - United States and Foreign Components of Income Before Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Expense (Benefit), Continuing Operations, by Jurisdiction [Abstract]
United States	$ 59,344	$ (135,978)	$ (39,323)
Foreign	468,426	300,562	187,638
Income from continuing operations before income taxes	$ 527,770	$ 164,584	$ 148,315

Income Taxes - Components of th

Income Taxes - Components of the Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current:
Federal	$ 18,832	$ (12,450)	$ (11,778)
Foreign	52,978	40,613	28,126
State	7,759	6,523	3,804
Total current	79,569	34,686	20,152
Deferred:
Federal	(7,688)	(69,104)	(27,493)
Foreign	(3,139)	(2,991)	(1,298)
State	(10,827)	(13,140)	(10,265)
Total deferred	(21,654)	(85,235)	(39,056)
Total provision	$ 57,915	$ (50,549)	$ (18,904)

Income Taxes - Deferred Tax Ass

Income Taxes - Deferred Tax Assets and Liabilities by Balance Sheet Classification (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred Tax Assets, Net, Classification [Abstract]
Deferred tax assets	$ 233,900	$ 207,194
Deferred tax liabilities	(1,472)	(2,240)
Total net deferred tax assets	$ 232,428	$ 204,954

Income Taxes - Components of De

Income Taxes - Components of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets:
Accruals and reserves	$ 41,094	$ 33,407
Deferred revenue	95,969	82,378
Tax credits	50,072	41,444
Net operating losses	41,986	50,143
Other	267	4,296
Stock based compensation	34,349	40,660
Transaction costs	557	511
Valuation allowance	(14,156)	(16,673)
Total deferred tax assets	250,138	236,166
Deferred tax liabilities:
Depreciation and amortization	1,933	(7,626)
Acquired technology	(8,524)	(17,778)
Prepaid expenses	(11,119)	(5,808)
Total deferred tax liabilities	(17,710)	(31,212)
Total net deferred tax assets	$ 232,428	$ 204,954

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating Loss Carryforwards [Line Items]
Valuation allowance	$ 14,156	$ 16,673
Federal statutory taxes	35.00%	35.00%	35.00%
Effective income tax rate	11.00%	(30.70%)	(12.70%)
Decrease in unrecognized tax benefits for closed tax years		$ 20,300
Unrecognized tax benefits	$ 69,801	$ 54,621	$ 66,918
Accrued interest and penalties	2,800
Long-term Deferred Tax Assets [Member]
Operating Loss Carryforwards [Line Items]
Unrecognized tax benefits	25,100
Research [Member]
Operating Loss Carryforwards [Line Items]
Tax credit carry forwards	6,100
Undistributed earnings from foreign subsidiaries	2,690,000
United States [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carry forwards	92,100
Foreign Jurisdictions [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carry forwards	$ 58,900

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of the Company's Effective Tax Rate to the Statutory Federal Rate (Detail)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Federal statutory taxes	35.00%	35.00%	35.00%
State income taxes, net of federal tax benefit	0.80%	(1.00%)
Foreign operations	(21.60%)	(41.10%)	(26.20%)
Permanent differences	3.20%	13.90%	8.00%
Change in deferred tax liability related to acquired intangibles	(0.80%)	(12.60%)	(10.90%)
Tax credits	(7.90%)	(20.70%)	(21.40%)
Stock option compensation	0.30%	0.80%	3.40%
Change in accruals for uncertain tax positions	2.20%	(5.90%)	(1.80%)
Other	(0.20%)	0.90%	1.20%
Effective income tax rate	11.00%	(30.70%)	(12.70%)

Income Taxes - Reconciliation74

Income Taxes - Reconciliation of the Beginning and Ending Amount of Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning balance	$ 54,621	$ 66,918
Additions based on tax positions related to the current year	11,588	6,613
Additions for tax positions of prior years	4,759	4,675
Reductions related to the expiration of statutes of limitations	(1,167)	(9,521)
Settlements		(14,064)
Ending balance	$ 69,801	$ 54,621

Segment Information - Additiona

Segment Information - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)Segment	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | Segment	1
Percentage of international revenues accounting for the Company's net revenues	46.30%	48.70%	50.70%
Net revenues	$ 2,736,080	$ 2,646,154	$ 2,563,064
U S to International Revenues [Member]
Segment Reporting Information [Line Items]
Net revenues	$ 160,500	$ 178,700	$ 176,100
Net Revenue [Member] | Customer Concentration Risk [Member]
Segment Reporting Information [Line Items]
Concentration risk, customer/distributors	2
Ingram Micro [Member] | Net Revenue [Member] | Customer Concentration Risk [Member]
Segment Reporting Information [Line Items]
Concentration risk, customer/distributors			1
Concentration risk, customer/distributors	13.00%	13.00%	14.00%
Arrow [Member] | Net Revenue [Member] | Customer Concentration Risk [Member]
Segment Reporting Information [Line Items]
Concentration risk, customer/distributors	12.00%	11.00%

Segment Information - Summary o

Segment Information - Summary of Long-lived Assets Consist of Property and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Property and equipment, net:
Property and equipment, net	$ 261,954	$ 282,102
United States [Member]
Property and equipment, net:
Property and equipment, net	197,077	214,580
United Kingdom [Member]
Property and equipment, net:
Property and equipment, net	25,321	28,851
Others Countries [Member]
Property and equipment, net:
Property and equipment, net	$ 39,556	$ 38,671

Segment Information - Revenues

Segment Information - Revenues by Product Grouping (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Net revenues	$ 2,736,080	$ 2,646,154	$ 2,563,064
Workspace Services Revenues [Member]
Segment Reporting Information [Line Items]
Net revenues	1,690,783	1,639,072	1,600,581
Delivery Networking Revenues [Member]
Segment Reporting Information [Line Items]
Net revenues	782,875	749,910	702,028
Cloud Services Revenues [Member]
Segment Reporting Information [Line Items]
Net revenues	130,955	101,403	75,569
Professional Services [Member]
Segment Reporting Information [Line Items]
Net revenues	131,229	147,488	175,541
Other [Member]
Segment Reporting Information [Line Items]
Net revenues	$ 238	$ 8,281	$ 9,345

Segment Information - Revenue b

Segment Information - Revenue by Geographic Location (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	$ 2,736,080	$ 2,646,154	$ 2,563,064
Operating Segments [Member] | Americas [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	1,598,896	1,487,364	1,394,112
Operating Segments [Member] | EMEA [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	863,517	873,620	863,179
Operating Segments [Member] | Asia-Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	$ 273,667	$ 285,170	$ 305,773

Convertible Senior Notes - Addi

Convertible Senior Notes - Additional Information (Detail)	1 Months Ended		3 Months Ended	12 Months Ended
	Apr. 30, 2014shares	Jan. 31, 2014$ / shares	Jun. 30, 2014USD ($)	Dec. 31, 2016USD ($)$ / sharesshares	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Debt Instrument [Line Items]
Proceeds from convertible debt						$ 1,415,717,000
Stock repurchased during period, value			$ 1,500,000,000
Amount used to repurchase stock				$ 28,689,000	$ 755,704,000	1,640,885,000
Convertible notes				1,348,156,000
Temporary equity				79,495,000
Purchase from Accelerated Share Repurchase [Member]
Debt Instrument [Line Items]
Stock repurchased during period, value						1,400,000,000
Senior Notes Due 2019 [Member]
Debt Instrument [Line Items]
Convertible debt				$ 1,348,156,000	$ 1,324,992,000	$ 1,440,000,000
Stated interest rate percentage						0.50%
Proceeds from convertible debt						$ 1,420,000,000
Payments for (proceeds from) hedge, investing activities						82,600,000
Stock repurchased during period, value						1,500,000,000
Convertible debt, conversion ratio		11.1111
Debt instrument, face amount						$ 1,000,000,000
Convertible debt, conversion price | $ / shares		$ 90		$ 90
Repurchase price as a percent of principal amount						100.00%
Amortization of debt discount, effective interest method, percent						3.00%
Convertible notes				$ 1,300,000,000
Deferred tax liability, equity component				8,200,000
Temporary equity				$ 79,495,000
Shares of common stock covered by note hedges | shares				16,000,000
Warrant transaction | shares	16,000,000
Strike price of warrants | $ / shares				$ 120
Warrants exercised | shares				0
Privately Negotiated Transaction [Member]
Debt Instrument [Line Items]
Amount used to repurchase stock			$ 101,000,000			$ 101,000,000

Convertible Senior Notes - Conv

Convertible Senior Notes - Convertible Debt (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Temporary equity	$ 79,495
Additional paid-in-capital	4,761,588	$ 4,566,919
Senior Notes Due 2019 [Member]
Debt Instrument [Line Items]
Principal	1,437,500	1,437,500
Less: note discount and issuance costs	(89,344)	(112,508)
Net carrying amount	1,348,156	1,324,992	$ 1,440,000
Temporary equity	79,495
Additional paid-in-capital	83,374	162,869
Total equity (including temporary equity)	$ 162,869	$ 162,869

Convertible Senior Notes - Sche

Convertible Senior Notes - Schedule of Interest Expense Recognized Related to Convertible Notes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Amortization of debt discount	$ 37,085	$ 36,013	$ 23,293
Senior Notes Due 2019 [Member]
Debt Instrument [Line Items]
Contractual interest expense	7,187	7,188	4,792
Amortization of debt issuance costs	3,863	3,974	2,461
Amortization of debt discount	33,014	32,039	20,832
Debt instrument, Interest Expense, Total	$ 44,064	$ 43,201	$ 28,085

Credit Facility - Additional In

Credit Facility - Additional Information (Detail)	Jan. 07, 2015USD ($)	Dec. 31, 2016USD ($)
Line of Credit Facility [Line Items]
Aggregate amount	$ 25,000,000
Letter of Credit [Member]
Line of Credit Facility [Line Items]
Term of credit facility	5 years
Aggregate amount	$ 250,000,000
Additional borrowing capacity	$ 250,000,000
Amount outstanding		$ 0
Consolidated leverage ratio	3.5
Consolidated interest coverage ratio	3
Letter of Credit [Member] | Swing Line Loans [Member]
Line of Credit Facility [Line Items]
Aggregate amount	$ 10,000,000
Letter of Credit [Member] | LIBOR [Member]
Line of Credit Facility [Line Items]
Basis spread on LIBOR (percent)		1.10%
Minimum [Member] | Letter of Credit [Member]
Line of Credit Facility [Line Items]
Quarterly facility fee (percent)		0.125%
Minimum [Member] | Letter of Credit [Member] | LIBOR [Member]
Line of Credit Facility [Line Items]
Basis spread on LIBOR (percent)		1.00%
Maximum [Member] | Letter of Credit [Member]
Line of Credit Facility [Line Items]
Quarterly facility fee (percent)		0.20%
Maximum [Member] | Letter of Credit [Member] | LIBOR [Member]
Line of Credit Facility [Line Items]
Basis spread on LIBOR (percent)		1.30%

Derivative Financial Instrume83

Derivative Financial Instruments - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Cash flow hedge instrument term, maximum	12 months
Cumulative unrealized gain (loss) on cash flow derivative instruments in accumulated other comprehensive loss	$ (3.1)	$ (2.3)

Derivative Financial Instrume84

Derivative Financial Instruments - Schedule of the Fair Values of Derivative Instruments (Detail) - Cash Flow Hedging [Member] - Foreign Currency Derivatives [Member] - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Derivatives Designated as Hedging Instruments [Member] | Prepaid Expenses and Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Asset derivatives	$ 460	$ 436
Derivatives Designated as Hedging Instruments [Member] | Accrued Expenses and Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability derivatives	3,816	2,895
Derivatives Not Designated as Hedging Instruments [Member] | Prepaid Expenses and Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Asset derivatives	2,046	627
Derivatives Not Designated as Hedging Instruments [Member] | Accrued Expenses and Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability derivatives	$ 619	$ 783

Derivative Financial Instrume85

Derivative Financial Instruments - Schedule of Effect of Derivative Instruments on Financial Performance (Detail) - Cash Flow Hedging [Member] - Foreign Currency Derivatives [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Derivatives Designated as Hedging Instruments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) Gain Recognized in Other Comprehensive (Loss) Income (Effective Portion)	$ (875)	$ 6,090
Derivatives Designated as Hedging Instruments [Member] | Operating Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Loss Reclassified from Accumulated Other Comprehensive Loss (Effective Portion)	(1,763)	(13,027)
Derivatives Not Designated as Hedging Instruments [Member] | Other Income (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) Gain Recognized in Income on Derivative	$ (1,030)	$ 1,669

Derivative Financial Instrume86

Derivative Financial Instruments - Schedule of Net Notional Foreign Currency Forward Contracts Outstanding (Detail) - Dec. 31, 2016

AUD

BRL

CAD

CHF (SFr)

CNY (¥)

DKK

EUR (€)

GBP (£)

HKD

INR (₨)

JPY (¥)

SGD

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Net notional foreign currency forward contracts outstanding

AUD 8,200,000

BRL 8,300,000

CAD 2,850,000

SFr 37,700,000

¥ 48,300,000

DKK 21,735,000

€ 8,307,000

£ 283,000

HKD 32,500,000

₨ 3,875,000

¥ 685,319,000

SGD 9,967,000

Earnings Per Share - Net Income

Earnings Per Share - Net Income Per Share Basic and Diluted (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Numerator:
Income from continuing operations	$ 469,855	$ 215,133	$ 167,219
Income from discontinued operations, net of income taxes	66,257	104,228	84,504
Net income	$ 536,112	$ 319,361	$ 251,723
Denominator:
Denominator for basic earnings per share-weighted-average shares outstanding	155,134	158,874	169,879
Effect of dilutive employee stock awards:
Employee stock awards	1,950	1,488	1,391
Denominator for diluted earnings per share-weighted-average shares outstanding	157,084	160,362	171,270
Basic earnings per share:
Income from continuing operations	$ 3.03	$ 1.35	$ 0.98
Income from discontinued operations, net of income taxes	0.43	0.66	0.50
Basic earnings per share	3.46	2.01	1.48
Diluted earnings per share
Income from continuing operations	2.99	1.34	0.98
Income from discontinued operations, net of income taxes	0.42	0.65	0.49
Diluted earnings per share	$ 3.41	$ 1.99	$ 1.47
Anti-dilutive weighted-average shares from stock awards	322	2,151	3,026

Earnings Per Share - Additional

Earnings Per Share - Additional Information (Detail) - $ / shares	Dec. 31, 2016	Jan. 31, 2014
Senior Notes Due 2019 [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Convertible debt, conversion price	$ 90	$ 90

Comprehensive Income - Schedule

Comprehensive Income - Schedule of Changes in Accumulated Other Comprehensive Income by Component (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at December 31, 2015	$ (28,527)
Other comprehensive income (loss) before reclassifications	(736)
Amounts reclassified from accumulated other comprehensive loss	559
Other comprehensive (loss) income	(177)	$ 8,263	$ (41,741)
Balance at December 31, 2016	(28,704)	(28,527)
Foreign Currency [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at December 31, 2015	(16,346)
Balance at December 31, 2016	(16,346)	(16,346)
Unrealized (Loss) Gain on Available-for-sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at December 31, 2015	(2,900)
Other comprehensive income (loss) before reclassifications	996
Amounts reclassified from accumulated other comprehensive loss	(1,204)
Other comprehensive (loss) income	(208)
Balance at December 31, 2016	(3,108)	(2,900)
Unrealized (Loss) Gain on Derivative Instruments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at December 31, 2015	(2,255)
Other comprehensive income (loss) before reclassifications	(2,638)
Amounts reclassified from accumulated other comprehensive loss	1,763
Other comprehensive (loss) income	(875)
Balance at December 31, 2016	(3,130)	(2,255)
Other Comprehensive Loss on Pension Liability [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at December 31, 2015	(7,026)
Other comprehensive income (loss) before reclassifications	906
Other comprehensive (loss) income	906
Balance at December 31, 2016	$ (6,120)	$ (7,026)

Comprehensive Income - Schedu90

Comprehensive Income - Schedule of Reclassification out of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Unrealized net gains on available-for-sale securities	$ (4,131)	$ (5,730)	$ (7,694)
Unrealized net losses on cash flow hedges	(1,771,027)	(1,969,322)	(1,894,438)
Net income	536,112	$ 319,361	$ 251,723
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income	559
Unrealized (Loss) Gain on Available-for-sale Securities [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Unrealized net gains on available-for-sale securities	(1,204)
Unrealized (Loss) Gain on Derivative Instruments [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Unrealized net losses on cash flow hedges	$ 1,763

Restructuring - Schedule of Res

Restructuring - Schedule of Restructuring Charges by Segment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Restructuring and Related Activities [Abstract]
Employee severance and related costs	$ 41,054	$ 74,879	$ 14,092
Consolidation of leased facilities	28,857	22,100
Reversal of previous charges	(2,510)	(286)
Other		1,968
Total Restructuring charges	$ 67,401	$ 98,661	$ 14,092

Restructuring - Additional Info

Restructuring - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring	$ 67,401	$ 98,661	$ 14,092
Restructuring	39,943	40,396
Operational Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring	44,500	29,400
Restructuring costs incurred since inception	73,900
January 2015 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring	24,000	$ 67,500
Total expected cost	$ 91,500

Restructuring - Schedule of R93

Restructuring - Schedule of Restructuring Accruals (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Restructuring Reserve [Roll Forward]
Beginning balance	$ 40,396
Restructuring charges	67,401	$ 98,661	$ 14,092
Payments	(69,012)
Other	1,158
Ending balance	$ 39,943	$ 40,396

Separation - Additional Informa

Separation - Additional Information (Detail) $ / shares in Units, $ in Thousands	Feb. 01, 2017$ / shares	Jul. 26, 2016shares	Mar. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Restructuring Cost and Reserve [Line Items]
Share issued in acquisitions | shares		26,900,000
Common stock conversion ratio		1
LogMeIn shares received in disposal of GetGo | shares		26,900,000
LogMeIn shares received in disposal as percent of Comany share outstanding		0.171844291
Fractional shares of LogMeIn received | shares		0
Income tax expense benefit | $				$ 57,915	$ (50,549)	$ (18,904)
Separation costs, spin off transaction | $				$ 2,540	$ 179
Scenario, Forecast [Member]
Restructuring Cost and Reserve [Line Items]
Income tax expense benefit | $			$ 45,200
GetGo, Inc [Member] | Subsequent Event [Member]
Restructuring Cost and Reserve [Line Items]
Convertible debt, conversion price | $ / shares	$ 71.91
Convertible debt, conversion ratio	13.9061

Recent Accounting Pronounceme95

Recent Accounting Pronouncements - Additional Information (Detail) - Accounting Standards Update 2015-03 [Member] $ in Millions	Dec. 31, 2016USD ($)
Short-term Debt [Line Items]
Debt issuance costs, net	$ 13.9
Long-term debt	$ (13.9)

Subsequent Events - Additional

Subsequent Events - Additional Information (Detail) - USD ($) $ in Millions	Jan. 03, 2017	Dec. 31, 2016
General and Administrative Expense [Member]
Subsequent Event [Line Items]
Acquisition related costs		$ 0.3
Unidesk Corporation [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Total consideration in business acquisitions	$ 60.5
Cash acquired from the acquisition	2.7
Acquisition transaction costs	$ 0.3

Discontinued Operations - Incom

Discontinued Operations - Income Statement Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income tax expense	$ 22,737	$ 43,065	$ 42,887
Income from discontinued operations, net of income tax	66,257	104,228	84,504
GoTo Business Division [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net revenues	682,185	629,440	579,792
Cost of net revenues	154,652	140,324	126,513
Gross margin	527,533	489,116	453,279
Research and development	93,892	83,018	66,898
Sales, marketing and services	209,475	189,560	205,307
General and administrative	63,270	50,068	43,357
Amortization of other intangible assets	14,097	11,254	3,994
Restructuring	3,721	1,750	6,332
Separation	54,084	6,173
Total operating expenses	438,539	341,823	325,888
Income from discontinued operations before income taxes	88,994	147,293	127,391
Income tax expense	22,737	43,065	42,887
Income from discontinued operations, net of income tax	$ 66,257	$ 104,228	$ 84,504

Discontinued Operations - Balan

Discontinued Operations - Balance Sheet Information (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash	$ 120,861	$ 57,762	$ 34,651
Total current assets of discontinued operations	179,689	116,727
Long-term assets of discontinued operations	538,931	553,657
Total current liabilities of discontinued operations	172,670	162,301
Long-term liabilities of discontinued operations	7,708	11,378
GoTo Business Division [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash	120,861	57,762
Accounts receivable, net	44,734	45,850
Prepaid expenses and other current assets	14,094	13,115
Total current assets of discontinued operations	179,689	116,727
Property and equipment, net	81,866	91,715
Goodwill	380,917	377,101
Other intangible assets, net	54,312	73,081
Deferred tax assets, net	18,496	8,002
Other assets	3,340	3,758
Long-term assets of discontinued operations	538,931	553,657
Total major classes of assets of discontinued operations	718,620	670,384
Accounts payable	11,333	15,959
Accrued expenses and other current liabilities	46,088	36,131
Current portion of deferred revenues	115,249	110,211
Total current liabilities of discontinued operations	172,670	162,301
Long-term portion of deferred revenues	4,224	7,204
Other liabilities	3,484	4,174
Long-term liabilities of discontinued operations	7,708	11,378
Total major classes of liabilities of discontinued operations	$ 180,378	$ 173,679

Valuation and Qualifying Accoun

Valuation and Qualifying Accounts (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Allowance for Doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Beginning of Period	$ 6,241	$ 3,750	$ 3,217
Charged to Expense	954	5,578	2,815
Charged to Other Accounts			76
Deductions	3,306	3,087	2,358
Balance at End of Period	3,889	6,241	3,750
Allowance for Returns [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Beginning of Period	1,438	2,185	2,062
Charged to Other Accounts	2,088	3,276	5,049
Deductions	1,532	4,023	4,926
Balance at End of Period	1,994	1,438	2,185
Valuation Allowance of Deferred Tax Assets [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Beginning of Period	16,673	15,167	26,465
Charged to Other Accounts	(2,517)	1,506	(11,298)
Balance at End of Period	$ 14,156	$ 16,673	$ 15,167