Nuance Communications (NUAN) 10-Q 9 Aug 17 2017 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Jun. 30, 2017	Jul. 31, 2017
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3
Trading Symbol	NUAN
Entity Registrant Name	Nuance Communications, Inc.
Entity Central Index Key	1,002,517
Current Fiscal Year End Date	--09-30
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		288,599,317

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Document Period End Date			Jun. 30, 2017
Revenues:
Professional services and hosting	$ 251,488	$ 242,331	$ 763,595	$ 709,662
Product and licensing	154,228	153,015	465,238	490,687
Maintenance and support	80,505	82,505	244,619	242,350
Total revenues	486,221	477,851	1,473,452	1,442,699
Cost of revenues:
Professional services and hosting	169,439	158,412	498,501	466,383
Product and licensing	17,637	20,785	54,805	65,020
Maintenance and support	13,410	13,574	40,248	40,496
Amortization of intangible assets	15,727	15,107	48,487	47,077
Total cost of revenues	216,213	207,878	642,041	618,976
Gross profit	270,008	269,973	831,411	823,723
Operating expenses:
Research and development	66,565	67,761	199,119	205,512
Sales and marketing	97,011	96,012	292,201	289,439
General and administrative	42,329	40,328	123,637	126,769
Amortization of intangible assets	29,160	26,748	84,931	80,229
Acquisition-related costs, net	7,646	4,721	22,051	8,426
Restructuring and other charges, net	13,035	5,717	39,649	20,257
Total operating expenses	255,746	241,287	761,588	730,632
Income from operations	14,262	28,686	69,823	93,091
Other (expense) income:
Interest income	1,952	1,012	4,255	3,511
Interest expense	(40,422)	(33,184)	(116,296)	(95,392)
Other expense, net	(1,019)	(489)	(21,251)	(7,284)
Loss before income taxes	(25,227)	(3,975)	(63,469)	(6,074)
Provision for income taxes	2,609	7,846	22,103	24,858
Net loss	$ (27,836)	$ (11,821)	$ (85,572)	$ (30,932)
Net loss per share:
Basic (in dollars per share)	$ (0.10)	$ (0.04)	$ (0.30)	$ (0.10)
Diluted (in dollars per share)	$ (0.10)	$ (0.04)	$ (0.30)	$ (0.10)
Weighted average common shares outstanding:
Basic (in shares)	287,856	279,373	289,269	295,319
Diluted (in shares)	287,856	279,373	289,269	295,319

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Net loss	$ (27,836)	$ (11,821)	$ (85,572)	$ (30,932)
Other comprehensive income (loss):
Foreign currency translation adjustment	13,185	(9,614)	566	(951)
Pension Adjustments	(250)	81	(14)	231
Unrealized (loss) gain on marketable securities	(15)	73	(19)	106
Total other comprehensive income (loss), net	12,920	(9,460)	533	(614)
Comprehensive loss	$ (14,916)	$ (21,281)	$ (85,039)	$ (31,546)

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2017	Sep. 30, 2016
Current assets:
Cash and cash equivalents	$ 693,594	$ 481,620
Marketable securities	175,615	98,840
Accounts receivable, less allowances for doubtful accounts of $12,681 and $11,038	359,497	380,004
Prepaid expenses and other current assets	90,794	78,126
Total current assets	1,319,500	1,038,590
Marketable Securities, Noncurrent	31,926	27,632
Land, building and equipment, net	161,826	185,169
Goodwill	3,578,689	3,508,879
Intangible assets, net	708,077	762,220
Other assets	137,475	138,980
Total assets	5,937,493	5,661,470
Current liabilities:
Current portion of long-term debt	371,321	0
Contingent And Deferred Acquisition Payments	31,561	9,468
Accounts payable	107,560	94,599
Accrued expenses and other current liabilities	218,155	237,659
Deferred revenue	374,033	349,173
Total current liabilities	1,102,630	690,899
Long-term portion of debt	2,229,336	2,433,152
Deferred revenue, net of current portion	424,635	386,960
Deferred tax liabilities	130,152	115,435
Other liabilities	96,200	103,694
Total liabilities	3,982,953	3,730,140
Commitments and contingencies
Stockholders’ equity:
Common stock, $0.001 par value per share; 560,000 shares authorized; 292,217 and 291,384 shares issued and 288,467 and 287,633 shares outstanding, respectively	292	291
Additional paid-in capital	2,601,239	2,492,992
Treasury stock, at cost (3,751 shares)	(16,788)	(16,788)
Accumulated other comprehensive loss	(115,601)	(116,134)
Accumulated deficit	(514,602)	(429,031)
Total stockholders’ equity	1,954,540	1,931,330
Total liabilities and stockholders’ equity	$ 5,937,493	$ 5,661,470

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Jun. 30, 2017	Sep. 30, 2016
Accounts receivable, allowances for doubtful accounts	$ 12,681	$ 11,038
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	560,000	560,000
Common stock, shares issued	292,217	291,384
Common stock, shares outstanding	288,467	287,633
Treasury stock, shares	3,751	3,751

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities:
Net loss	$ (85,572)	$ (30,932)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	174,955	173,093
Stock-based compensation	121,809	122,957
Non-cash interest expense	42,912	34,044
Deferred tax provision	6,762	6,480
Loss on extinguishment of debt	(18,565)	(4,851)
Other	20,610	12
Changes in operating assets and liabilities, net of effects from acquisitions:
Accounts receivable	28,132	23,374
Prepaid expenses and other assets	(14,531)	(12,526)
Accounts payable	12,209	25,041
Accrued expenses and other liabilities	(4,040)	18,549
Deferred revenue	60,552	61,984
Net cash provided by operating activities	382,363	426,927
Cash flows from investing activities:
Capital expenditures	(34,033)	(41,423)
Payments for business and asset acquisitions, net of cash acquired	(110,220)	(28,194)
Purchase of marketable securities and other investments	(192,062)	(36,251)
Proceeds from sales and maturities of marketable securities and other investments	106,444	66,254
Net cash used in investing activities	(229,871)	(39,614)
Cash flows from financing activities:
Payments of debt	(634,055)	(511,844)
Proceeds from Issuance of Long-term Debt	838,081	959,860
Payments for repurchase of common stock	(99,077)	(699,472)
Payments of other long-term liabilities	(424)	(1,320)
Proceeds from issuance of common stock from employee stock plans	8,682	8,461
Cash used to net share settle employee equity awards	(52,523)	(67,047)
Net cash provided by (used in) financing activities	60,684	(311,362)
Effects of exchange rate changes on cash and cash equivalents	(1,202)	3,655
Net increase in cash and cash equivalents	211,974	79,606
Cash and cash equivalents at beginning of period	481,620	479,449
Cash and cash equivalents at end of period	$ 693,594	$ 559,055

Organization and Presentation

Organization and Presentation	9 Months Ended
	Jun. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Presentation	Organization and Presentation The consolidated financial statements include the accounts of Nuance Communications, Inc. (“Nuance”, “we”, "our", or “the Company”) and our wholly-owned subsidiaries. We prepared these unaudited interim consolidated financial statements in accordance with accounting principles generally accepted in the United States of America (the “U.S.” or the "United States") and pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). The condensed consolidated financial statements reflect all adjustments that, in our opinion, are necessary to present fairly our financial position, results of operations and cash flows for the periods indicated. The preparation of financial statements in conformity with U.S. Generally Accepted Accounting Principles (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts and classifications of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Although we believe the disclosures in these financial statements are adequate to make the information presented not misleading, certain information in the footnote disclosures of the financial statements has been condensed or omitted where it substantially duplicates information provided in our latest audited consolidated financial statements, in accordance with the rules and regulations of the SEC. Accordingly, these financial statements should be read in conjunction with the audited financial statements and the notes thereto included in our Annual Report on Form 10-K for the fiscal year ended September 30, 2016 . The results of operations for the three and nine months ended June 30, 2017 and 2016, are not necessarily indicative of the results for the entire fiscal year or any future period.

Malware Incident and Subsequent

Malware Incident and Subsequent Events (Notes)	9 Months Ended
	Jun. 30, 2017
Subsequent Event [Line Items]
Subsequent Events [Text Block]	2. Malware Incident and Subsequent Events On June 27, 2017, Nuance was a victim of the global NotPetya malware incident (the “Malware Incident”). The NotPetya malware affected certain Nuance systems, including systems used by our healthcare customers primarily for transcription services as well as systems used by our imaging division to receive and process orders. We have evaluated subsequent events from June 30, 2017 through the date of the issuance of these consolidated financial statements and have determined that other than the effects of the Malware Incident, no material subsequent events have occurred that would affect the information presented in these consolidated financial statements.

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Jun. 30, 2017
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Recently Adopted Accounting Standards During January 2017, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2017-04, "Intangibles - Goodwill and Other: Simplifying the Test for Goodwill Impairment" ("ASU 2017-04"), which simplifies the subsequent measurement of goodwill by eliminating Step 2 from the goodwill impairment test. The standard is effective for annual or interim impairment tests in fiscal years beginning after December 15, 2019. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. Effective June 2017, we early adopted this standard and the adoption had no material impact on our consolidated financial statements. See Note 5, Goodwill and Intangibles Assets, for further information. In January 2017, the FASB issued ASU No. 2017-01, “Clarifying the Definition of a Business” (“ASU 2017-01”), which provides guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. ASU 2017-01 requires entities to use a screen test to determine when an integrated set of assets and activities is not a business or if the integrated set of assets and activities needs to be further evaluated against the framework. ASU 2017-01 is effective for fiscal years beginning after December 15, 2017, including interim periods within those years, with early adoption permitted. Effective January 2017, we early adopted the guidance and the adoption had no material impact on our consolidated financial statements. Effective October 1, 2016, we implemented ASU No. 2015-02, “Amendments to the Consolidation Analysis” ("ASU 2015-02"). The amendments in ASU 2015-02 provide guidance on evaluating whether a company should consolidate certain legal entities. In accordance with the guidance, all legal entities are subject to reevaluation under the revised consolidation model. The implementation of ASU 2015-02 had no impact on our consolidated financial statements. Effective October 1, 2016, we implemented ASU No. 2014-15, "Disclosure of Uncertainties about an Entity's Ability to Continue as a Going Concern" ("ASU 2014-15"), to provide guidance on management's responsibility in evaluating whether there is substantial doubt about a company's ability to continue as a going concern and to provide related footnote disclosures. The implementation of ASU 2014-15 had no impact on our consolidated financial statements. Effective October 1, 2016, we implemented ASU No. 2014-12, " Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period" ("ASU 2014-12"). ASU 2014-12 requires that a performance target that affects vesting and could be achieved after the requisite service period be treated as a performance condition. The implementation of ASU 2014-12 had no impact on our consolidated financial statements. Recently Issued Accounting Standards From time to time, new accounting pronouncements are issued by the FASB and are adopted by us as of the specified effective dates. Unless otherwise discussed, such pronouncements did not have or will not have a significant impact on our consolidated financial position, results of operations or cash flows, or do not apply to our operations. In August 2016, the FASB issued ASU 2016-15, "Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments" ("ASU 2016-15"), which provides guidance on the classification of certain specific cash flow issues including debt prepayment or extinguishment costs, settlement of certain debt instruments, contingent consideration payments made after a business combination, proceeds from the settlement of certain insurance claims and distributions received from equity method investees. The standard requires the use of a retrospective approach to all periods presented, but may be applied prospectively if retrospective application would be impracticable. ASU 2016-15 is effective for us in the first quarter of fiscal year 2019, and early application is permitted. We are currently evaluating the impact of our pending adoption of ASU 2016-15 on our statement of cash flows, but do not expect it to have a material impact. In March 2016, the FASB issued ASU No. 2016-09, "Improvements to Employee Share-Based Payment Accounting" ("ASU 2016-09"), which is intended to simplify several aspects of the accounting for share-based payment transactions, including the income tax effects, statutory withholding requirements, forfeitures, and classification on the statement of cash flows. ASU 2016-09 is effective for us in the first quarter of fiscal year 2018, and early application is permitted. We are currently evaluating the impact of our pending adoption of ASU 2016-09 on our consolidated financial statements but do not expect it to have a material impact. In February 2016, the FASB issued ASU No. 2016-02, "Leases" ("ASU 2016-02"). ASU 2016-02 requires lessees to recognize on the balance sheet a right-of-use asset, representing its right to use the underlying asset for the lease term, and a lease liability for all leases with terms greater than 12 months. The guidance also requires qualitative and quantitative disclosures designed to assess the amount, timing, and uncertainty of cash flows arising from leases. The standard requires the use of a modified retrospective transition approach, which includes a number of optional practical expedients that entities may elect to apply. ASU 2016-02 is effective for us in the first quarter of fiscal year 2020, and early application is permitted. We are currently evaluating the impact of our pending adoption of ASU 2016-02 on our consolidated financial statements and we currently expect that most of our operating lease commitments will be subject to the new standard and recognized as operating lease liabilities and right-of-use assets upon our adoption of ASU 2016-02, which will increase our total assets and total liabilities that we report relative to such amounts prior to adoption. In January 2016, the FASB issued ASU No. 2016-01, "Recognition and Measurement of Financial Assets and Financial Liabilities" ("ASU 2016-01"). ASU 2016-01 amends the guidance on the classification and measurement of financial instruments. Although ASU 2016-01 retains many current requirements, it significantly revises accounting related to the classification and measurement of investments in equity securities and the presentation of certain fair value changes for financial liabilities measured at fair value. ASU 2016-01 also amends certain disclosure requirements associated with the fair value of financial instruments and is effective for us in the first quarter of fiscal year 2019. Based on the composition of our investment portfolio, we do not believe the adoption of ASU 2016-01 will have a material impact on our consolidated financial statements. In May 2014, the FASB issued ASU No. 2014-09, "Revenue from Contracts with Customers: Topic 606" ("ASU 2014-09"), to supersede nearly all existing revenue recognition guidance under U.S. GAAP. The core principle of ASU 2014-09 is to recognize revenues when promised goods or services are transferred to customers in an amount that reflects the consideration that is expected to be received for those goods or services. ASU 2014-09 defines a five-step process to achieve this core principle and, in doing so, it is possible more judgment and estimates may be required within the revenue recognition process than required under existing U.S. GAAP including identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. ASU 2014-09 permits two methods of adoption: (i) retrospective to each prior reporting period presented; or (ii) retrospective with the cumulative effect of initially applying the guidance recognized at the date of initial application. In August 2015, the FASB issued ASU No. 2015-14, Revenue from Contracts with Customers: Deferral of the Effective Date, which deferred the effective date of the new revenue standard for periods beginning after December 15, 2016 to December 15, 2017, with early adoption permitted but not earlier than the original effective date. Accordingly, the updated standard is effective for us in the first quarter of fiscal 2019 and we do not plan to early adopt. In the first quarter of fiscal 2017, we commenced a project to assess the potential impact of the new standard on our consolidated financial statements and related disclosures. This project also includes the assessment and enhancement of our internal processes and systems to address the new standard. We have not yet selected a transition method.

Business Acquisitions

Business Acquisitions	9 Months Ended
	Jun. 30, 2017
Business Combinations [Abstract]
Business Acquisitions	Business Acquisitions As part of our business strategy, we have acquired, and may acquire in the future, certain businesses and technologies primarily to expand our products and service offerings. Fiscal Year 2017 Acquisitions In fiscal year 2017, we acquired several businesses in our Enterprise, Healthcare and Mobile segments that were not significant individually or in the aggregate. The total aggregate consideration for these acquisitions was $97.2 million , including the issuance of 0.8 million shares of our common stock valued at $13.4 million and an $8.3 million estimated fair value for future contingent payments. The results of operations of these acquisitions have been included in our financial results since their respective acquisition dates. The fair value estimates for the assets acquired and liabilities assumed for acquisitions completed during fiscal year 2017 were based upon preliminary calculations and valuations, and our estimates and assumptions for each of these acquisitions are subject to change as we obtain additional information during the respective measurement periods (up to one year from the respective acquisition dates). The primary areas of preliminary estimates that were not yet finalized related to certain assets and liabilities acquired. There were no significant changes to the fair value estimates during the current year. We have not furnished pro forma financial information related to our current year acquisitions because such information is not material, individually or in the aggregate, to our financial results. We have also not presented revenue or the results of operations for each of these business combinations, from the date of acquisition, as they were similarly neither material nor significant to our consolidated financial results. Fiscal Year 2016 Acquisitions Acquisition of TouchCommerce, Inc. In August 2016, we acquired all of the outstanding stock of TouchCommerce. TouchCommerce is a provider of omni-channel solutions to engage their customers on any device through online chat, guides, personalized content, and other automated tools, resulting in enhanced customer experience, increased revenue and reduced support costs. We expect this acquisition to expand our customer care solutions with a range of new digital offerings, including live chat, customer analytics and personalization solutions within our Enterprise segment. We expect to be able to provide an end-to-end engagement platform that merges intelligent self-service with assisted service to increase customer satisfaction, strengthen customer loyalty and improve business results. The aggregate consideration for this transaction was $217.5 million , and included $113.0 million paid in cash and $85.0 million paid in our common stock. The remaining $19.5 million is expected to be paid in November 2017 at the conclusion of an indemnity period in either cash or our common stock, at our election. The acquisition was a stock purchase and the goodwill resulting from this acquisition is not deductible for tax purposes. The results of operations for this acquisition have been included in our Enterprise segment from the acquisition date. A summary of the preliminary allocation of the purchase consideration for our TouchCommerce acquisition is as follows (dollars in thousands): Touch-Commerce Purchase consideration: Cash $ 113,008 Common stock (a) 85,000 Deferred acquisition payment 19,458 Total purchase consideration $ 217,466 Allocation of the purchase consideration: Cash $ 137 Accounts receivable (b) 14,897 Goodwill 117,178 Identifiable intangible assets (c) 110,800 Other assets 1,521 Total assets acquired 244,533 Current liabilities (4,134 ) Deferred tax liability (19,515 ) Deferred revenue (2,784 ) Other long term liabilities (634 ) Total liabilities assumed (27,067 ) Net assets acquired $ 217,466 (a) 5,749,807 shares of our common stock valued at $14.78 per share were issued at closing. (b) Accounts receivable have been recorded at their estimated fair values and the fair value reserve was not material. (c) The following are the identifiable intangible assets acquired and their respective weighted average useful lives, as determined based on preliminary valuations (dollars in thousands): TouchCommerce Amount Weighted Average Life (Years) Core and completed technology $ 26,000 6.0 Customer relationships 81,600 10.0 Trade names 3,200 5.0 Total $ 110,800 Other Fiscal Year 2016 Acquisitions During fiscal year 2016, we acquired several other businesses in our Healthcare segment that were not significant individually or in the aggregate. The total aggregate cash consideration for these acquisitions was $50.4 million including an estimated fair value for future contingent payments. The results of operations of these acquisitions have been included in our financial results since their respective acquisition dates. Acquisition-Related Costs, net Acquisition-related costs include costs related to business and other acquisitions, including potential acquisitions. These costs consist of (i) transition and integration costs, including retention payments, transitional employee costs and earn-out payments treated as compensation expense, as well as the costs of integration-related activities, including services provided by third-parties; (ii) professional service fees and expenses, including financial advisory, legal, accounting, and other outside services incurred in connection with acquisition activities, and disputes and regulatory matters related to acquired entities; and (iii) adjustments to acquisition-related items that are required to be marked to fair value each reporting period, such as contingent consideration, and other items related to acquisitions for which the measurement period has ended, such as gains or losses on settlements of pre-acquisition contingencies. The components of acquisition-related costs, net are as follows (dollars in thousands): Three Months Ended June 30, Nine Months Ended June 30, 2017 2016 2017 2016 Transition and integration costs $ 3,722 $ 1,332 $ 11,044 $ 3,367 Professional service fees 3,905 3,531 11,896 6,131 Acquisition-related adjustments 19 (142 ) (889 ) (1,072 ) Total $ 7,646 $ 4,721 $ 22,051 $ 8,426

Goodwill and Intangible Assets

Goodwill and Intangible Assets	9 Months Ended
	Jun. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Intangible Assets The changes in the carrying amount of goodwill and intangible assets for the nine months ended June 30, 2017 , are as follows (dollars in thousands): Goodwill Intangible Assets Balance at September 30, 2016 $ 3,508,879 $ 762,220 Acquisitions 61,823 78,403 Purchase accounting adjustments (321 ) — Amortization — (133,418 ) Effect of foreign currency translation 8,308 872 Balance at June 30, 2017 $ 3,578,689 $ 708,077 During the first quarter of fiscal year 2017, we acquired a speech patent portfolio for total cash consideration of $35.0 million which was paid in January 2017. We determined that the recent service interruption resulting from the Malware Incident represents a triggering event which may require an impairment test. Our Healthcare and Imaging reporting units were predominantly impacted by the Malware Incident, resulting in the inaccessibility of certain Healthcare transcription platforms and the inability to fulfill certain Imaging orders. The goodwill associated with our Healthcare and Imaging reporting units totaled approximately $1.4 billion and $0.3 billion , respectively, as of both June 30, 2017 and September 30, 2016. Based on our annual goodwill impairment analysis performed as of July 1, 2016, the fair values exceeded the carrying values of these reporting units by approximately 160% and 170% , respectively. To the extent that revenues do not meet the projected growth used in our fiscal 2016 annual goodwill impairment analysis, there may be a negative impact on the future cash flow assumptions which would negatively impact the reporting units’ fair values. We will complete our assessment as part of our annual impairment test as of July 1, 2017, in the fourth quarter, as we finalize the evaluation of impact of this event on our projected revenues.

Financial Instruments and Hedgi

Financial Instruments and Hedging Activities	9 Months Ended
	Jun. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Financial Instruments and Hedging Activities	Financial Instruments and Hedging Activities Derivatives Not Designated as Hedges Forward Currency Contracts We operate our business in countries throughout the world and transact business in various foreign currencies. Our foreign currency exposures typically arise from transactions denominated in currencies other than the functional currency of our operations. We have a program that primarily utilizes foreign currency forward contracts to offset the risks associated with the effect of certain foreign currency exposures. Our program is designed so that increases or decreases in our foreign currency exposures are offset by gains or losses on the foreign currency forward contracts in order to mitigate the risks and volatility associated with our foreign currency transactions. Generally, we enter into such contracts for less than 90 days and have no cash requirements until maturity. At June 30, 2017 and September 30, 2016 , we had outstanding contracts with a total notional value of $99.4 million and $215.2 million , respectively. We have not designated these forward contracts as hedging instruments pursuant to the authoritative guidance for derivatives and hedging, and accordingly, we record the fair value of these contracts at the end of each reporting period in our consolidated balance sheet, with the unrealized gains and losses recognized immediately in earnings as other expense, net in our consolidated statements of operations. The cash flows related to the settlement of these contracts are included in cash flows from investing activities within our consolidated statement of cash flows. The following table provides a quantitative summary of the fair value of our derivative instruments as of June 30, 2017 and September 30, 2016 (dollars in thousands): Derivatives Not Designated as Hedges: Balance Sheet Classification Fair Value June 30, 2017 September 30, 2016 Foreign currency contracts Prepaid expenses and other current assets $ 202 $ 335 The following tables summarize the activity of derivative instruments for the nine months ended June 30, 2017 and 2016 (dollars in thousands): Three Months Ended June 30, Nine Months Ended June 30, Derivatives Not Designated as Hedges Location of Gain (Loss) Recognized in Income 2017 2016 2017 2016 Foreign currency contracts Other expense, net $ 175 $ (2,261 ) $ (7,885 ) $ (27 ) Other Financial Instruments Financial instruments including cash equivalents, accounts receivable and accounts payable are carried in the consolidated financial statements at amounts that approximate their fair value based on the short maturities of those instruments. Marketable securities and derivative instruments are carried at fair value.

Fair Value Measures

Fair Value Measures	9 Months Ended
	Jun. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value Measures	Fair Value Measures Fair value is defined as the price that would be received for an asset, or paid to transfer a liability, in an orderly transaction between market participants at the measurement date. Valuation techniques must maximize the use of observable inputs and minimize the use of unobservable inputs. When determining the fair value measurements for assets and liabilities required to be recorded at fair value, we consider the principal or most advantageous market in which we would transact and consider assumptions that market participants would use when pricing the asset or liability, such as inherent risk, transfer restrictions, and risk of nonperformance. The following summarizes the three levels of inputs required to measure fair value, of which the first two are considered observable and the third is considered unobservable: • Level 1. Quoted prices for identical assets or liabilities in active markets which we can access. • Level 2. Observable inputs other than those described as Level 1. • Level 3. Unobservable inputs based on the best information available, including management’s estimates and assumptions. Assets and liabilities measured at fair value on a recurring basis at June 30, 2017 and September 30, 2016 consisted of the following (dollars in thousands): June 30, 2017 Level 1 Level 2 Level 3 Total Assets: Money market funds (a) $ 556,549 $ — $ — $ 556,549 US government agency securities (a) 1,005 — — 1,005 Time deposits (b) — 87,190 — 87,190 Commercial paper, $51,116 at cost (b) — 51,147 — 51,147 Corporate notes and bonds, $69,154 at cost (b) — 69,204 — 69,204 Foreign currency exchange contracts (b) — 202 — 202 Total assets at fair value $ 557,554 $ 207,743 $ — $ 765,297 Liabilities: Contingent acquisition payments (c) $ — $ — $ (11,351 ) $ (11,351 ) Total liabilities at fair value $ — $ — $ (11,351 ) $ (11,351 ) September 30, 2016 Level 1 Level 2 Level 3 Total Assets: Money market funds (a) $ 331,419 $ — $ — $ 331,419 US government agency securities (a) 1,002 — — 1,002 Time deposits (b) — 33,794 — 33,794 Commercial paper, $38,108 at cost (b) — 38,142 — 38,142 Corporate notes and bonds, $54,484 at cost (b) — 54,536 — 54,536 Foreign currency exchange contracts (b) — 335 — 335 Total assets at fair value $ 332,421 $ 126,807 $ — $ 459,228 Liabilities: Contingent acquisition payments (c) $ — $ — $ (8,240 ) $ (8,240 ) Total liabilities at fair value $ — $ — $ (8,240 ) $ (8,240 ) (a) Money market funds and U.S. government agency securities, included in cash and cash equivalents in the accompanying balance sheets, are valued at quoted market prices in active markets. (b) The fair values of our time deposits, commercial paper, corporate notes and bonds, and foreign currency exchange contracts are based on the most recent observable inputs for similar instruments in active markets or quoted prices for identical or similar instruments in markets that are not active or are directly or indirectly observable. Time deposits are generally for terms of one year or less. The time deposits, commercial paper and corporate notes and bonds mature within three years and have a weighted average maturity of 0.75 years as of June 30, 2017 . (c) The fair values of our contingent consideration arrangements are determined based on our evaluation as to the probability and amount of any earn-out that will be achieved based on expected future performance by the acquired entity. The following table provides a summary of changes in fair value of our Level 3 financial instruments for the three and nine months ended June 30, 2017 and 2016 (dollars in thousands): Three Months Ended June 30, Nine Months Ended June 30, 2017 2016 2017 2016 Balance at beginning of period $ 6,377 $ 20,825 $ 8,240 $ 15,961 Earn-out liabilities established at time of acquisition 5,000 1,455 8,253 3,955 Payments and foreign currency translation (26 ) 1,538 (4,283 ) 2,910 Adjustments to fair value included in acquisition-related costs, net — 333 (859 ) 1,325 Balance at end of period $ 11,351 $ 24,151 $ 11,351 $ 24,151 Our financial liabilities valued based upon Level 3 inputs are composed of contingent consideration arrangements relating to our acquisitions. We are contractually obligated to pay contingent consideration to the selling shareholders upon the achievement of specified objectives, including the achievement of future bookings and sales targets related to the products of the acquired entities and therefore we record contingent consideration liabilities at the time of the acquisitions. We update our assumptions each reporting period based on new developments and record such amounts at fair value based on the revised assumptions until the consideration is paid upon the achievement of the specified objectives or eliminated upon failure to achieve the specified objectives. Contingent acquisition payment liabilities are scheduled to be paid in periods through fiscal year 2019 . As of June 30, 2017 , we could be required to pay up to $27.7 million for contingent consideration arrangements if the specified objectives are achieved. We have determined the fair value of the liabilities for the contingent consideration based on a probability-weighted discounted cash flow analysis. This fair value measurement is based on significant inputs not observable in the market and thus represents a Level 3 measurement within the fair value hierarchy. The fair value of the contingent consideration liability associated with future payments was based on several factors, the most significant of which are the estimated cash flows projected from future product sales and the risk adjusted discount rate for the fair value measurement.

Accrued Expenses and Other Curr

Accrued Expenses and Other Current Liabilities	9 Months Ended
	Jun. 30, 2017
Payables and Accruals [Abstract]
Accrued Expenses and Other Current Liabilities	Accrued Expenses and Other Current Liabilities Accrued expenses and other current liabilities consisted of the following (dollars in thousands): June 30, 2017 September 30, 2016 Compensation $ 132,572 $ 154,028 Accrued interest payable 23,429 20,409 Cost of revenue related liabilities 16,875 19,351 Consulting and professional fees 16,062 18,001 Facilities related liabilities 8,248 7,382 Sales and other taxes payable 3,792 2,708 Sales and marketing incentives 3,334 6,508 Other 13,843 9,272 Total $ 218,155 $ 237,659

Deferred Revenue

Deferred Revenue	9 Months Ended
	Jun. 30, 2017
Deferred Revenue [Abstract]
Deferred Revenue	Deferred Revenue Deferred maintenance revenue consists of prepaid fees received for post-contract customer support for our products, including telephone support and the right to receive unspecified upgrades/updates on a when-and-if-available basis. Unearned revenue includes fees for up-front set-up of the service environment; fees charged for on-demand service; certain software arrangements for which we do not have fair value of post-contract customer support, resulting in ratable revenue recognition for the entire arrangement on a straight-line basis; and fees in excess of estimated earnings on percentage-of-completion service contracts. Deferred revenue consisted of the following (dollars in thousands): June 30, 2017 September 30, 2016 Current liabilities: Deferred maintenance revenue $ 158,939 $ 165,902 Unearned revenue 215,094 183,271 Total current deferred revenue $ 374,033 $ 349,173 Long-term liabilities: Deferred maintenance revenue $ 59,604 $ 59,955 Unearned revenue 365,031 327,005 Total long-term deferred revenue $ 424,635 $ 386,960

Restructuring and Other Charges

Restructuring and Other Charges, net	9 Months Ended
	Jun. 30, 2017
Restructuring and Related Activities [Abstract]
Restructuring and Related Activities Disclosure [Text Block]	Restructuring and Other Charges, net Restructuring and other charges, net include restructuring expenses together with other charges that are unusual in nature, are the result of unplanned events, and arise outside of the ordinary course of continuing operations. Restructuring expenses consist of employee severance costs and may also include charges for excess facility space and other contract termination costs. Other charges may include litigation contingency reserves, costs related to a transition agreement for our Chief Executive Officer, asset impairment charges, expenses associated with the Malware Incident and gains or losses on the sale or disposition of certain non-strategic assets or product lines. The following table sets forth accrual activity relating to restructuring reserves for the nine months ended June 30, 2017 (dollars in thousands): Personnel Facilities Total Balance at September 30, 2016 $ 2,661 $ 11,132 $ 13,793 Restructuring charges, net 12,279 5,708 17,987 Non-cash adjustment — (1,433 ) (1,433 ) Cash payments (11,747 ) (5,104 ) (16,851 ) Balance at June 30, 2017 $ 3,193 $ 10,303 $ 13,496 While restructuring and other charges, net are excluded from our calculation of segment profit, the table below presents the restructuring and other charges, net associated with each segment (dollars in thousands): Three Months Ended June 30, 2017 2016 Personnel Facilities Total Restructuring Other Charges Total Personnel Facilities Total Restructuring Other Charges Total Healthcare $ 993 $ — $ 993 $ 4,065 $ 5,058 $ 49 $ 1,344 $ 1,393 $ — $ 1,393 Mobile 866 (511 ) 355 — 355 62 1,222 1,284 — 1,284 Enterprise 1,910 2,040 3,950 — 3,950 (8 ) 494 486 — 486 Imaging 43 — 43 — 43 7 294 301 — 301 Corporate 241 25 266 3,363 3,629 (249 ) 2,502 2,253 — 2,253 Total $ 4,053 $ 1,554 $ 5,607 $ 7,428 $ 13,035 $ (139 ) $ 5,856 $ 5,717 $ — $ 5,717 Nine Months Ended June 30, 2017 2016 Personnel Facilities Total Restructuring Other Charges Total Personnel Facilities Total Restructuring Other Charges Total Healthcare $ 3,554 $ 870 $ 4,424 $ 4,065 $ 8,489 $ 1,363 $ 1,352 $ 2,715 $ — $ 2,715 Mobile 4,133 (460 ) 3,673 10,773 14,446 4,973 1,172 6,145 46 6,191 Enterprise 2,722 2,904 5,626 — 5,626 1,035 2,528 3,563 — 3,563 Imaging 629 387 1,016 — 1,016 219 478 697 — 697 Corporate 1,241 2,007 3,248 6,824 10,072 1,820 5,210 7,030 61 7,091 Total $ 12,279 $ 5,708 $ 17,987 $ 21,662 $ 39,649 $ 9,410 $ 10,740 $ 20,150 $ 107 $ 20,257 Fiscal Year 2017 During the three and nine months ended June 30, 2017 , we recorded restructuring charges of $5.6 million and $18.0 million , respectively. The restructuring charges for the nine months ended June 30, 2017 included $12.3 million for severance costs related to approximately 300 terminated employees and $5.7 million charge for the closure of certain excess facility space including adjustment to sublease assumptions associated with prior abandoned facilities. These actions are part of our initiatives to reduce costs and optimize processes. We expect the remaining outstanding severance payments of $3.2 million will be substantially paid by the end of fiscal year 2017 . We expect the remaining payments of $10.3 million for the closure of excess facility space will be paid through fiscal year 2027 , in accordance with the terms of the applicable leases. In addition to the restructuring charges, during the three and nine months ended June 30, 2017 , we recorded $2.3 million and $5.8 million , respectively, for costs related to a transition agreement for our Chief Executive Officer as communicated on our Form 8-K filed on November 17, 2016. The cash payments associated with the transition agreement are expected to be made during fiscal years 2018 and 2019. During the three and nine months ended June 30, 2017, we also included $5.2 million in other charges related to professional services fees and fixed asset impairment as a result of the Malware Incident. A non-cash impairment charge of $10.8 million resulting from our decision to cease use of a capitalized internally developed software is included in the results for the nine months ended June 30, 2017 . Fiscal Year 2016 During the three and nine months ended June 30, 2016 , we recorded restructuring charges of $5.7 million and $20.2 million , respectively. The restructuring charges for the nine months ended June 30, 2016 included $9.4 million for severance costs related to approximately 200 terminated employees as part of our initiatives to reduce costs and optimize processes. The restructuring charges also included a $10.7 million charge for the closure of certain excess facility space.

Debt and Credit Facilities

Debt and Credit Facilities	9 Months Ended
	Jun. 30, 2017
Debt Disclosure [Abstract]
Debt and Credit Facilities	Debt and Credit Facilities At June 30, 2017 and September 30, 2016 , we had the following long-term borrowing obligations (dollars in thousands): June 30, 2017 September 30, 2016 5.625% Senior Notes due 2026, net of deferred issuance costs of $6.2 million. Effective interest rate 5.625%. $ 493,797 $ — 5.375% Senior Notes due 2020, net of unamortized premium of $1.0 million and $3.0 million, respectively, and deferred issuance costs of $2.5 million and $7.3 million, respectively. Effective interest rate 5.375%. 448,511 1,046,851 6.000% Senior Notes due 2024, net of deferred issuance costs of $2.2 million and $2.4 million, respectively. Effective interest rate 6.000%. 297,833 297,601 1.00% Convertible Debentures due 2035, net of unamortized discount of $146.7 million and $163.5 million, respectively, and deferred issuance costs of $7.2 million and $8.2 million, respectively. Effective interest rate 5.622%. 522,576 504,712 2.75% Convertible Debentures due 2031, net of unamortized discount of $6.1 million and $19.2 million, respectively, and deferred issuance costs of $0.3 million and $1.1 million, respectively. Effective interest rate 7.432%. 371,321 375,208 1.25% Convertible Debentures due 2025, net of unamortized discount of $95.1 million, and deferred issuance costs of $4.4 million. Effective interest rate 5.578%. 250,439 — 1.50% Convertible Debentures due 2035, net of unamortized discount of $44.9 million and $51.7 million, respectively, and deferred issuance costs of $1.6 million and $1.9 million, respectively. Effective interest rate 5.394%. 217,437 210,286 Deferred issuance costs related to our Revolving Credit Facility (1,257 ) (1,506 ) Total long-term debt 2,600,657 2,433,152 Less: current portion 371,321 — Non-current portion of long-term debt $ 2,229,336 $ 2,433,152 The following table summarizes the maturities of our borrowing obligations as of June 30, 2017 (dollars in thousands): Fiscal Year Convertible Debentures (1) Senior Notes Total 2017 $ — $ — $ — 2018 377,740 — 377,740 2019 — — — 2020 — 450,000 450,000 2021 — — — Thereafter 1,290,383 800,000 2,090,383 Total before unamortized discount 1,668,123 1,250,000 2,918,123 Less: unamortized discount and issuance costs (306,350 ) (11,116 ) (317,466 ) Total long-term debt $ 1,361,773 $ 1,238,884 $ 2,600,657 (1) Holders of the 1.0% 2035 Debentures have the right to require us to redeem the debentures on December 15, 2022, 2027 and 2032. Holders of the 2031 Debentures have the right to require us to redeem the debentures on November 1, 2017, 2021, and 2026. Holders of the 1.5% 2035 Debentures have the right to require us to redeem the debentures on November 1, 2021, 2026, and 2031. The estimated fair value of our current and non-current debt approximated $2,966.4 million (face value $2,918.1 million ) and $2,630.3 million (face value $2,687.1 million ) at June 30, 2017 and September 30, 2016 , respectively. These fair value amounts represent the value at which our lenders could trade our debt within the financial markets and do not represent the settlement value of these long-term debt liabilities to us at each reporting date. The fair value of the long-term debt will continue to vary each period based on fluctuations in market interest rates, as well as changes to our credit ratings. The Senior Notes and the Convertible Debentures are traded, and the fair values of each borrowing was estimated using the averages of the bid and ask trading quotes at each respective reporting date. We had no outstanding balance on the Revolving Credit Facility at June 30, 2017 or September 30, 2016 . 5.625% Senior Notes due 2026 In December 2016 , we issued $500.0 million aggregate principal amount of 5.625% Senior Notes due on December 15, 2026 (the "2026 Senior Notes") in a private placement. The proceeds from the 2026 Senior Notes were approximately $495.0 million , net of issuance costs, and we used the proceeds to repurchase a portion of our 2020 Senior Notes. The 2026 Senior Notes bear interest at 5.625% per year, payable in cash semi-annually in arrears, beginning on June 15, 2017. The 2026 Senior Notes are unsecured senior obligations and are guaranteed on an unsecured senior basis by certain of our domestic subsidiaries ("Subsidiary Guarantors"). The 2026 Senior Notes and the guarantees rank equally in right of payment with all of our and the Subsidiary Guarantors’ existing and future unsecured senior debt and rank senior in right of payment to all of our and the Subsidiary Guarantors’ future unsecured subordinated debt. The 2026 Senior Notes and guarantees effectively rank junior to all our secured debt and that of the Subsidiary Guarantors to the extent of the value of the collateral securing such debt and to all liabilities, including trade payables, of our subsidiaries that have not guaranteed the 2026 Senior Notes. At any time before December 15, 2021 , we may redeem all or a portion of the 2026 Senior Notes at a redemption price equal to 100% of the aggregate principal amount of the 2026 Senior Notes to be redeemed, plus a “make-whole” premium and accrued and unpaid interest to, but excluding, the redemption date. At any time on or after December 15, 2021 , we may redeem all or a portion of the 2026 Senior Notes at certain redemption prices expressed as percentages of the principal amount, plus accrued and unpaid interest to, but excluding, the redemption date. At any time and from time to time before December 15, 2021 , we may redeem up to 35% of the aggregate outstanding principal amount of the 2026 Senior Notes with the net cash proceeds received by us from certain equity offerings at a price equal to 105.625% of the aggregate principal amount, plus accrued and unpaid interest to, but excluding, the redemption date, provided that the redemption occurs no later than 120 days after the closing of the related equity offering, and at least 50% of the original aggregate principal amount of the 2026 Senior Notes remains outstanding immediately thereafter. Upon the occurrence of certain asset sales or a change in control, we must offer to repurchase the 2026 Senior Notes at a price equal to 100% in the case of an asset sale, or 101% in the case of a change of control, of the principal amount plus accrued and unpaid interest to, but excluding, the repurchase date. 5.375% Senior Notes due 2020 In August 2012, we issued $700.0 million aggregate principal amount of 5.375% Senior Notes due on August 15, 2020 in a private placement. In October 2012, we issued an additional $350.0 million aggregate principal amount of our 5.375% Senior Notes (collectively the “2020 Senior Notes”). The 2020 Senior Notes bear interest at 5.375% per year, payable in cash semi-annually in arrears. The 2020 Senior Notes are our unsecured senior obligations and are guaranteed on an unsecured senior basis by certain of our domestic subsidiaries, ("the Subsidiary Guarantors"). The 2020 Senior Notes and guarantees rank equally in right of payment with all of our and the Subsidiary Guarantors' existing and future unsecured senior debt and rank senior in right of payment to all of our and the Subsidiary Guarantors' future unsecured subordinated debt. The 2020 Senior Notes and guarantees effectively rank junior to all secured debt of our and the Subsidiary Guarantors to the extent of the value of the collateral securing such debt and to all liabilities, including trade payables, of our subsidiaries that have not guaranteed the 2020 Senior Notes. In January 2017, we repurchased $600.0 million in aggregate principal amount of our 2020 Senior Notes using cash and cash equivalents and the net proceeds from our 2026 Senior Notes issued in December 2016. In January 2017, we recorded an extinguishment loss of $18.4 million . In accordance with the authoritative guidance for debt instruments, a loss on extinguishment is equal to the difference between the reacquisition price and the net carrying amount of the extinguished debt, including any unamortized debt discount or issuance costs. Following this activity, $450.0 million in aggregate principal amount of our 2020 Senior Notes remains outstanding. 6.0% Senior Notes due 2024 In June 2016 , we issued $300.0 million aggregate principal amount of 6.0% Senior Notes due on July 1, 2024 (the "2024 Senior Notes") in a private placement. The proceeds from the 2024 Senior Notes were approximately $297.5 million , net of issuance costs. The 2024 Senior Notes bear interest at 6.0% per year, payable in cash semi-annually in arrears. The 2024 Senior Notes are unsecured senior obligations and are guaranteed on an unsecured senior basis by our Subsidiary Guarantors. The 2024 Senior Notes and the guarantees rank equally in right of payment with all of our and the Subsidiary Guarantors’ existing and future unsecured senior debt, and rank senior in right of payment to all of our and the Subsidiary Guarantors’ future unsecured subordinated debt. The 2024 Senior Notes and guarantees effectively rank junior to all our secured debt and that of the Subsidiary Guarantors to the extent of the value of the collateral securing such debt and to all liabilities, including trade payables, of our subsidiaries that have not guaranteed the 2024 Senior Notes. 1.0% Convertible Debentures due 2035 In December 2015, we issued $676.5 million in aggregate principal amount of 1.0% Senior Convertible Debentures due in 2035 (the “1.0% 2035 Debentures”) in a private placement. We used a portion of the proceeds to repurchase $38.3 million in aggregate principal on our 2.75% Senior Convertible Debentures due in 2031 and to repay the aggregate principal balance of $472.5 million on the term loan. Upon the repurchase and repayment of debts in December 2015, we recorded an extinguishment loss of $4.9 million in other expense, net , in the accompanying consolidated statements of operations. The 1.0% 2035 Debentures bear interest at 1.0% per year, payable in cash semi-annually in arrears. The 1.0% 2035 Debentures mature on December 15, 2035 , subject to the right of the holders to require us to redeem the 1.0% 2035 Debentures on December 15, 2022, 2027, or 2032 . The 1.0% 2035 Debentures are general senior unsecured obligations and rank equally in right of payment with all of our existing and future unsecured, unsubordinated indebtedness and senior in right of payment to any indebtedness that is contractually subordinated to the 1.0% 2035 Debentures. The 1.0% 2035 Debentures will be effectively subordinated to indebtedness and other liabilities of our subsidiaries. The initial conversion price is approximately $27.22 per share. At issuance, we allocated $495.4 million to long-term debt, and $181.1 million has been recorded as additional paid-in capital, which is being amortized to interest expense using the effective interest rate method through December 2022 . As of June 30, 2017 and September 30, 2016 , none of the conversion criteria were met for the 1.0% 2035 Debentures. If the conversion criteria were met, we could be required to repay all or some of the aggregate principal amount in cash prior to the maturity date. 2.75% Convertible Debentures due 2031 In October 2011 , we issued $690.0 million in aggregate principal amount of 2.75% Senior Convertible Debentures due in 2031 (the “2031 Debentures”) in a private placement. The 2031 Debentures bear interest at 2.75% per year, payable in cash semi-annually in arrears. The 2031 Debentures mature on November 1, 2031 , subject to the right of the holders to require us to redeem the 2031 Debentures on November 1, 2017, 2021, and 2026 . The 2031 Debentures are general senior unsecured obligations and rank equally in right of payment with all of our existing and future unsecured, unsubordinated indebtedness and senior in right of payment to any indebtedness that is contractually subordinated to the 2031 Debentures. The 2031 Debentures will be effectively subordinated to indebtedness and other liabilities of our subsidiaries. The initial conversion price is approximately $32.30 per share. At issuance, we allocated $533.6 million to long-term debt, and $156.4 million has been recorded as additional paid-in capital, which is being amortized to interest expense using the effective interest rate method through November 2017 . In June 2015, we entered into separate privately negotiated agreements with certain holders of our 2031 Debentures to exchange, in a private placement, $256.2 million in aggregate principal amount of our 2031 Debentures for approximately $263.9 million in aggregate principal amount of our 1.5% 2035 Debentures. In December 2015, we entered into separate privately negotiated agreements with certain holders of our 2031 Debentures to repurchase $38.3 million in aggregate principal with proceeds received from the issuance of our 1.0% 2035 Debentures. In March 2017, we entered into separate privately negotiated agreements with certain holders of our 2031 Debentures to repurchase $17.8 million in aggregate principal with proceeds received from the issuance of our 1.25% Senior Convertible Debentures issued in March 2017. Following these activities, $377.7 million in aggregate principal amount of our 2031 Debentures remain outstanding. As of June 30, 2017 , the remaining aggregate outstanding principal balance has been classified as current portion of long-term debt on the consolidated balance sheet as the holders have the right to require us to redeem on November 1, 2017. As of June 30, 2017 and September 30, 2016 , none of the conversion criteria were met for the 2031 Debentures. If the conversion criteria were met, we could be required to repay all or some of the aggregate principal amount in cash prior to the maturity date. 1.25% Convertible Debentures due 2025 In March 2017, we issued $350.0 million in aggregate principal amount of 1.25% Senior Convertible Debentures due in 2025 (the “1.25% 2025 Debentures”) in a private placement. The proceeds were approximately $343.6 million , net of issuance costs. We used a portion of the proceeds to repurchase 5.8 million shares of our common stock for $99.1 million and $17.8 million in aggregate principal on our 2031 Debentures. We intend to use the remaining net proceeds, together with cash on hand, to repurchase, redeem, retire or otherwise repay all of our remaining outstanding 2031 Debentures in November 2017. The 1.25% 2025 Debentures bear interest at 1.25% per year, payable in cash semi-annually in arrears, beginning on October 1, 2017. The 1.25% 2025 Debentures mature on April 1, 2025. The 1.25% 2025 Debentures are general senior unsecured obligations and rank equally in right of payment with all of our existing and future unsecured, unsubordinated indebtedness and senior in right of payment to any indebtedness that is contractually subordinated to the 1.25% 2025 Debentures. The 1.25% 2025 Debentures will be effectively subordinated to indebtedness and other liabilities of our subsidiaries. We account separately for the liability and equity components of the 1.25% 2025 Debentures in accordance with authoritative guidance for convertible debt instruments that may be settled in cash upon conversion. The guidance requires the carrying amount of the liability component to be estimated by measuring the fair value of a similar liability that does not have an associated conversion feature and record the remainder in stockholders’ equity. At issuance, we allocated $252.1 million to long-term debt, and $97.9 million has been recorded as additional paid-in capital, which is being amortized to interest expense using the effective interest rate method through April 1, 2025. If converted, the principal amount of the 1.25% 2025 Debentures is payable in cash and any amounts payable in excess of the principal amount will (based on an initial conversion rate, which represents an initial conversion price of approximately $22.22 per share, subject to adjustment under certain circumstances) be paid in cash or shares of our common stock, at our election, only in the following circumstances and to the following extent: (i) prior to October 1, 2024, on any date during any fiscal quarter beginning after June 30, 2017 (and only during such fiscal quarter) if the closing sale price of our common stock was more than 130% of the then current conversion price for at least 20 trading days in the period of the 30 consecutive trading days ending on the last trading day of the previous fiscal quarter; (ii) at any time on or after October 1, 2024, (iii) during the five consecutive business-day period immediately following any five consecutive trading-day period in which the trading price for $1,000 principal amount of the 1.25% 2025 Debentures for each day during such five trading-day period was less than 98% of the closing sale price of our common stock multiplied by the then current conversion rate; or (iv) upon the occurrence of specified corporate transactions, as described in the indenture for the 1.25% 2025 Debentures. We may not redeem the 1.25% 2025 Debentures prior to the maturity date. If we undergo a fundamental change or non-stock change of control (as described in the indenture for the 1.25% 2025 Debentures) prior to maturity, holders will have the option to require us to repurchase all or any portion of their debentures for cash at a price equal to 100% of the principal amount of the 1.25% 2025 Debentures to be purchased plus any accrued and unpaid interest, including any additional interest to, but excluding, the repurchase date. As of June 30, 2017 , none of the conversion criteria were met for the 1.25% 2025 Debentures. If the conversion criteria were met, we could be required to repay all or some of the aggregate principal amount in cash prior to the maturity date. 1.50% Convertible Debentures due 2035 In June 2015, we issued $263.9 million in aggregate principal amount of 1.50% Senior Convertible Debentures due in 2035 (the “1.5% 2035 Debentures”) in exchange for $256.2 million in aggregate principal amount of our 2031 Debentures. The 1.5% 2035 Debentures were issued at 97.09% of the principal amount, which resulted in a discount of $7.7 million . The 1.5% 2035 Debentures bear interest at 1.50% per year, payable in cash semi-annually in arrears. The 1.5% 2035 Debentures mature on November 1, 2035, subject to the right of the holders to require us to redeem the 1.5% 2035 Debentures on November 1, 2021, 2026, or 2031. The 1.5% 2035 Debentures are general senior unsecured obligations and rank equally in right of payment with all of our existing and future unsecured, unsubordinated indebtedness and senior in right of payment to any indebtedness that is contractually subordinated to the 1.5% 2035 Debentures. The 1.5% 2035 Debentures will be effectively subordinated to indebtedness and other liabilities of our subsidiaries. The initial conversion price is approximately $23.26 per share. At issuance, we allocated $208.6 million to long-term debt, and $55.3 million has been recorded as additional paid-in capital, which is being amortized to interest expense using the effective interest rate method through November 2021. As of June 30, 2017 and September 30, 2016 , none of the conversion criteria were met for the 1.5% 2035 Debentures. If the conversion criteria were met, we could be required to repay all or some of the aggregate principal amount in cash prior to the maturity date. Revolving Credit Facility In April 2016, we entered into a credit agreement that provides for a $242.5 million revolving credit line, including letters of credit (together, the “Revolving Credit Facility”). The Revolving Credit Facility matures on April 15, 2021. As of June 30, 2017 , issued letters of credit in the aggregate amount of $4.6 million were treated as issued and outstanding when calculating the borrowing availability under the Revolving Credit Facility. As of June 30, 2017 , we had $237.9 million available for additional borrowing under the Revolving Credit Facility. Any amounts outstanding under the Revolving Credit Facility will bear interest, at either (i) LIBOR plus an applicable margin of 1.50% or 1.75% , or (ii) the alternative base rate plus an applicable margin of 0.50% or 0.75% . The Revolving Credit Facility is secured by substantially all assets of ours and our Subsidiary Guarantors. The Revolving Credit Facility contains customary affirmative and negative covenants and conditions to borrowing, as well as customary events of default.

Stockholders' Equity (Notes)

Stockholders' Equity (Notes)	9 Months Ended
	Jun. 30, 2017
Stockholders' Equity Attributable to Parent [Abstract]
Stockholders' Equity Note Disclosure [Text Block]	Stockholders' Equity Share Repurchases On April 29, 2013 , our Board of Directors approved a share repurchase program for up to $500.0 million of our outstanding shares of common stock. On April 29, 2015, our Board of Directors approved an additional $500.0 million under our share repurchase program. In March 2017, in connection with the issuance of our 1.25% 2025 Debentures, we used a portion of the net proceeds to repurchase 5.8 million shares of our common stock for $99.1 million under the approved program. Since the commencement of the program, we have repurchased 46.5 million shares for $806.6 million . These shares were retired upon repurchase. Approximately $193.4 million remained available for share repurchases as of June 30, 2017 pursuant to our share repurchase program. Under the terms of the share repurchase program, we have the ability to repurchase shares from time to time through a variety of methods, which may include open market purchases, privately negotiated transactions, block trades, accelerated stock repurchase transactions, or any combination of such methods. The share repurchase program does not require us to acquire any specific number of shares and may be modified, suspended, extended or terminated by us at any time without prior notice. The timing and the amount of any purchases will be determined by management based on an evaluation of market conditions, capital allocation alternatives, and other factors. Stock Issuances During the nine months ended June 30, 2017 , we issued 844,108 shares of our common stock valued at $13.4 million in connection with a business acquisition, which is discussed in Note 4.

Net Loss Per Share

Net Loss Per Share	9 Months Ended
	Jun. 30, 2017
Earnings Per Share, Basic and Diluted [Abstract]
Net (Loss) Income Per Share	Net Loss Per Share As of June 30, 2017 and 2016 , diluted weighted average common shares outstanding is equal to basic weighted average common shares due to our net loss position. Common equivalent shares are excluded from the computation of diluted net loss per share if their effect is anti-dilutive. Potentially dilutive common equivalent shares aggregating to 7.5 million and 7.4 million shares for the three months ended June 30, 2017 and 2016 , respectively, and 7.6 million and 8.4 million shares for the nine months ended June 30, 2017 and 2016 , respectively, have been excluded from the computation of diluted net loss per share because their inclusion would be anti-dilutive.

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended
	Jun. 30, 2017
Share-based Compensation [Abstract]
Stock-Based Compensation	Stock-Based Compensation We recognize stock-based compensation expense over the requisite service period. Our share-based awards are accounted for as equity instruments. The amounts included in the consolidated statements of operations relating to stock-based compensation are as follows (dollars in thousands): Three Months Ended June 30, Nine Months Ended June 30, 2017 2016 2017 2016 Cost of professional services and hosting $ 8,385 $ 8,112 $ 24,875 $ 23,626 Cost of product and licensing 104 42 298 286 Cost of maintenance and support 1,130 1,083 3,117 3,074 Research and development 9,610 9,157 26,498 27,056 Selling and marketing 11,981 13,726 34,968 37,023 General and administrative 11,121 10,327 32,053 31,892 Total $ 42,331 $ 42,447 $ 121,809 $ 122,957 Stock Options The table below summarizes activity relating to stock options for the nine months ended June 30, 2017 : Number of Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term Aggregate Intrinsic Value (a) Outstanding at September 30, 2016 1,965,826 $ 15.01 Exercised (1,932,286 ) $ 14.98 Expired (7,595 ) $ 20.01 Outstanding at June 30, 2017 25,945 $ 15.77 2.8 years $ 0.1 million Exercisable at June 30, 2017 25,936 $ 15.78 2.8 years $ 0.1 million Exercisable at June 30, 2016 1,975,656 $ 14.97 1.0 year $ 2.2 million (a) The aggregate intrinsic value in this table was calculated based on the positive difference, if any, between the closing market price of our common stock on June 30, 2017 ( $17.41 ) and the exercise price of the underlying options. The weighted-average intrinsic value of stock options exercised during the nine months ended June 30, 2017 and 2016 was $3.6 million and $8.5 million , respectively. Restricted Units Restricted units are not included in issued and outstanding common stock until the shares are vested and released. The purchase price for vested restricted units is $0.001 per share. The table below summarizes activity relating to restricted units for the nine months ended June 30, 2017 : Number of Shares Underlying Restricted Units — Contingent Awards Number of Shares Underlying Restricted Units — Time-Based Awards Outstanding at September 30, 2016 4,224,488 5,884,023 Granted 3,108,321 6,267,257 Earned/released (1,788,014 ) (5,454,085 ) Forfeited (455,176 ) (476,398 ) Outstanding at June 30, 2017 5,089,619 6,220,797 Weighted average remaining recognition period of outstanding restricted units 1.4 years 1.7 years Unearned stock-based compensation expense of outstanding restricted units $56.5 million $68.1 million Aggregate intrinsic value of outstanding restricted units (a) $88.6 million $108.4 million (a) The aggregate intrinsic value in this table was calculated based on the positive difference between the closing market price of our common stock on June 30, 2017 ( $17.41 ) and the purchase price of the underlying restricted units. A summary of weighted-average grant-date fair value for awards granted and intrinsic value of all restricted units vested during the periods noted is as follows: Nine Months Ended June 30, 2017 2016 Weighted-average grant-date fair value per share $ 16.10 $ 19.20 Total intrinsic value of shares vested (in millions) $ 119.2 $ 150.7 Restricted Stock Awards Restricted stock awards are included in the issued and outstanding common stock at the date of grant. The table below summarizes activity related to restricted stock awards for the nine months ended June 30, 2017 : Number of Shares Underlying Restricted Stock Weighted Average Grant Date Fair Value Outstanding at September 30, 2016 — $ — Granted 250,000 $ 15.55 Outstanding at June 30, 2017 250,000 $ 15.55 Weighted average remaining recognition period of outstanding restricted stock awards 0.3 years Unearned stock-based compensation expense of outstanding restricted stock awards $1.1 million Aggregate intrinsic value of outstanding restricted stock awards (a) $4.4 million (a) The aggregate intrinsic value in this table was calculated based on the positive difference between the closing market price of our common stock on June 30, 2017 ( $17.41 ) and the purchase price of the underlying restricted stock awards. No restricted stock awards vested during the nine months ended June 30, 2017 . The weighted-average intrinsic value of restricted stock awards vested during the nine months ended June 30, 2016 was $4.3 million .

Income Taxes

Income Taxes	9 Months Ended
	Jun. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The components of loss before income taxes are as follows (dollars in thousands): Three Months Ended June 30, Nine Months Ended June 30, 2017 2016 2017 2016 Domestic $ (58,871 ) $ (39,615 ) $ (148,257 ) $ (102,308 ) Foreign 33,644 35,640 84,788 96,234 Loss before income taxes $ (25,227 ) $ (3,975 ) $ (63,469 ) $ (6,074 ) The components of provision from income taxes are as follows (dollars in thousands): Three Months Ended June 30, Nine Months Ended June 30, 2017 2016 2017 2016 Domestic $ (3,029 ) $ 3,411 $ 5,952 $ 12,970 Foreign 5,638 4,435 16,151 11,888 Provision for income taxes $ 2,609 $ 7,846 $ 22,103 $ 24,858 Effective tax rate (10.3 )% (197.4 )% (34.8 )% (409.3 )% The effective income tax rate was (10.3)% and (197.4)% for the three months ended June 30, 2017 and 2016, respectively. The effective income tax rate was (34.8)% and (409.3)% for the nine months ended June 30, 2017 and 2016 , respectively. Our current effective income tax rate differs from the U.S. federal statutory rate of 35% primarily due to current period losses in the United States that require an additional valuation allowance and accordingly provide no benefit to the provision as well as an increase to indefinite lived deferred tax liabilities. This is partially offset by our earnings in foreign operations that are subject to a significantly lower tax rate than the U.S. statutory tax rate, driven primarily by our subsidiaries in Ireland. The effective income tax rate is based upon the income for the year, the composition of the income in different countries, changes relating to valuation allowances for certain countries if and as necessary, and adjustments, if any, for the potential tax consequences, benefits or resolutions of audits or other tax contingencies. Our aggregate income tax rate in foreign jurisdictions is lower than our income tax rate in the United States. The majority of our income before provision for income taxes from foreign operations has been earned by subsidiaries in Ireland. Our effective tax rate may be adversely affected by earnings being lower than anticipated in countries where we have lower statutory tax rates and higher than anticipated in countries where we have higher statutory tax rates. At June 30, 2017 and September 30, 2016 , we had gross tax effected unrecognized tax benefits of $29.2 million and $27.3 million , respectively, which are included in other long-term liabilities. If these benefits were recognized, they would impact our effective tax rate. We do no t expect a significant change in the amount of unrecognized tax benefits within the next 12 months.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Jun. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Litigation and Other Claims Similar to many companies in the software industry, we are involved in a variety of claims, demands, suits, investigations and proceedings that arise from time to time relating to matters incidental to the ordinary course of our business, including actions with respect to contracts, intellectual property, employment, benefits and securities matters. We have estimated the amount of probable losses that may result from all currently pending matters, and such amounts are reflected in our consolidated financial statements. These recorded amounts are not material to our consolidated financial position or results of operations and no additional material losses related to these pending matters are reasonably possible. While it is not possible to predict the outcome of these matters with certainty, we do not expect the results of any of these actions to have a material adverse effect on our results of operations or financial position. However, each of these matters is subject to uncertainties, the actual losses may prove to be larger or smaller than the accruals reflected in our consolidated financial statements, and we could incur judgments or enter into settlements of claims that could adversely affect our financial position, results of operations or cash flows. Guarantees and Other We often include indemnification provisions in the customer and business partner contracts. Generally, these provisions require us to defend claims arising out of our products’ infringement of third-party intellectual property rights, breach of contractual obligations and/or unlawful or otherwise culpable conduct. The indemnity obligations generally cover damages, costs and attorneys’ fees arising out of such claims. In most, but not all cases, our total liability under such provisions is limited to either the value of the contract or a specified, agreed upon amount. In some cases our total liability under such provisions is unlimited. In many, but not all cases, the term of the indemnity provision is perpetual. While the maximum potential amount of future payments we could be required to make under all the indemnification provisions is unlimited, we believe the estimated fair value of these provisions is minimal due to the low frequency with which these provisions have been triggered. We indemnify our directors and officers to the fullest extent permitted by Delaware law, which provides among other things, indemnification to directors and officers for expenses, judgments, fines, penalties and settlement amounts incurred by such persons in their capacity as a director or officer of the company, regardless of whether the individual is serving in any such capacity at the time the liability or expense is incurred. Additionally, in connection with certain acquisitions we have agreed to indemnify the former officers and members of the boards of directors of those companies, on similar terms as described above, for a period of six years from the acquisition date. In certain cases we purchase director and officer insurance policies related to these obligations, which fully cover the six year period. To the extent that we do not purchase a director and officer insurance policy for the full period of any contractual indemnification, and such directors and officers do not have coverage under separate insurance policies, we would be required to pay for costs incurred, if any, as described above.

Segment and Geographic Informat

Segment and Geographic Information and Significant Customers	9 Months Ended
	Jun. 30, 2017
Segment Reporting [Abstract]
Segment and Geographic Information and Significant Customers	Segment and Geographic Information We operate in, and report financial information for, the following four reportable segments: Healthcare, Mobile, Enterprise, and Imaging. Segment profit is an important measure used for evaluating performance and for decision-making purposes and reflects the direct controllable costs of each segment together with an allocation of sales and corporate marketing expenses, and certain research and development project costs that benefit multiple product offerings. Segment profit represents income from operations excluding stock-based compensation, amortization of intangible assets, acquisition-related costs, net, restructuring and other charges, net, costs associated with intellectual property collaboration agreements, other expense, net and certain unallocated corporate expenses. We believe that these adjustments allow for more complete comparisons to the financial results of the historical operations. The Healthcare segment is primarily engaged in clinical speech and clinical language understanding solutions that improve the clinical documentation process - from capturing the complete patient record to improving clinical documentation and quality measures for reimbursement. The Mobile segment is primarily engaged in providing a broad portfolio of specialized virtual assistants and connected services built on voice recognition, text-to-speech, natural language understanding, dialog, and text input technologies. Our Enterprise segment is primarily engaged in using speech, natural language understanding, and artificial intelligence to provide automated and assisted customer solutions and services for voice, mobile, web and messaging channels, in native and secure modes. The Imaging segment is primarily engaged in software solutions and expertise that help professionals and organizations to gain optimal control of their document and information processes through scanning and print management. We do not track our assets by operating segment. Consequently, it is not practical to show assets or depreciation by operating segment. The following table presents segment results along with a reconciliation of segment profit to loss before income taxes (dollars in thousands): Three Months Ended Nine Months Ended June 30, June 30, 2017 2016 2017 2016 Segment revenues (a) : Healthcare $ 232,641 $ 240,986 $ 710,315 $ 733,461 Mobile 101,515 91,778 293,525 280,017 Enterprise 112,064 95,249 344,359 278,467 Imaging 49,404 56,848 154,541 175,199 Total segment revenues 495,624 484,861 1,502,740 1,467,144 Less: acquisition-related revenues adjustments (9,403 ) (7,010 ) (29,288 ) (24,445 ) Total consolidated revenues 486,221 477,851 1,473,452 1,442,699 Segment profit: Healthcare 70,457 78,129 232,353 237,740 Mobile 41,428 30,983 115,336 98,196 Enterprise 34,419 31,065 108,149 91,336 Imaging 16,943 20,597 53,029 69,774 Total segment profit 163,247 160,774 508,867 497,046 Corporate expenses and other, net (31,683 ) (30,888 ) (92,829 ) (97,489 ) Acquisition-related revenues and cost of revenues adjustments (9,403 ) (6,460 ) (29,288 ) (23,520 ) Stock-based compensation (42,331 ) (42,447 ) (121,809 ) (122,957 ) Amortization of intangible assets (44,887 ) (41,855 ) (133,418 ) (127,306 ) Acquisition-related costs, net (7,646 ) (4,721 ) (22,051 ) (8,426 ) Restructuring and other charges, net (13,035 ) (5,717 ) (39,649 ) (20,257 ) Costs associated with IP collaboration agreements — — — (4,000 ) Other expense, net (39,489 ) (32,661 ) (133,292 ) (99,165 ) Loss before income taxes $ (25,227 ) $ (3,975 ) $ (63,469 ) $ (6,074 ) (a) Segment revenues differ from reported revenues due to certain revenue adjustments related to acquisitions that would otherwise have been recognized but for the purchase accounting treatment of the business combinations. These revenues are included to allow for more complete comparisons to the financial results of historical operations and in evaluating management performance. No country outside of the United States provided greater than 10% of our total revenues. Revenues, classified by the major geographic areas in which our customers are located, were as follows (dollars in thousands): Three Months Ended Nine Months Ended June 30, June 30, 2017 2016 2017 2016 United States $ 341,826 $ 341,252 $ 1,043,933 $ 1,035,776 International 144,395 136,599 429,519 406,923 Total revenues $ 486,221 $ 477,851 $ 1,473,452 $ 1,442,699

Summary of Significant Accoun24

Summary of Significant Accounting Policies Recently Issued Accounting Pronouncements (Tables)	9 Months Ended
	Jun. 30, 2017
Recently Issued Accounting Pronouncements [Abstract]
New Accounting Pronouncements, Policy [Policy Text Block]	Recently Issued Accounting Standards From time to time, new accounting pronouncements are issued by the FASB and are adopted by us as of the specified effective dates. Unless otherwise discussed, such pronouncements did not have or will not have a significant impact on our consolidated financial position, results of operations or cash flows, or do not apply to our operations. In August 2016, the FASB issued ASU 2016-15, "Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments" ("ASU 2016-15"), which provides guidance on the classification of certain specific cash flow issues including debt prepayment or extinguishment costs, settlement of certain debt instruments, contingent consideration payments made after a business combination, proceeds from the settlement of certain insurance claims and distributions received from equity method investees. The standard requires the use of a retrospective approach to all periods presented, but may be applied prospectively if retrospective application would be impracticable. ASU 2016-15 is effective for us in the first quarter of fiscal year 2019, and early application is permitted. We are currently evaluating the impact of our pending adoption of ASU 2016-15 on our statement of cash flows, but do not expect it to have a material impact. In March 2016, the FASB issued ASU No. 2016-09, "Improvements to Employee Share-Based Payment Accounting" ("ASU 2016-09"), which is intended to simplify several aspects of the accounting for share-based payment transactions, including the income tax effects, statutory withholding requirements, forfeitures, and classification on the statement of cash flows. ASU 2016-09 is effective for us in the first quarter of fiscal year 2018, and early application is permitted. We are currently evaluating the impact of our pending adoption of ASU 2016-09 on our consolidated financial statements but do not expect it to have a material impact. In February 2016, the FASB issued ASU No. 2016-02, "Leases" ("ASU 2016-02"). ASU 2016-02 requires lessees to recognize on the balance sheet a right-of-use asset, representing its right to use the underlying asset for the lease term, and a lease liability for all leases with terms greater than 12 months. The guidance also requires qualitative and quantitative disclosures designed to assess the amount, timing, and uncertainty of cash flows arising from leases. The standard requires the use of a modified retrospective transition approach, which includes a number of optional practical expedients that entities may elect to apply. ASU 2016-02 is effective for us in the first quarter of fiscal year 2020, and early application is permitted. We are currently evaluating the impact of our pending adoption of ASU 2016-02 on our consolidated financial statements and we currently expect that most of our operating lease commitments will be subject to the new standard and recognized as operating lease liabilities and right-of-use assets upon our adoption of ASU 2016-02, which will increase our total assets and total liabilities that we report relative to such amounts prior to adoption. In January 2016, the FASB issued ASU No. 2016-01, "Recognition and Measurement of Financial Assets and Financial Liabilities" ("ASU 2016-01"). ASU 2016-01 amends the guidance on the classification and measurement of financial instruments. Although ASU 2016-01 retains many current requirements, it significantly revises accounting related to the classification and measurement of investments in equity securities and the presentation of certain fair value changes for financial liabilities measured at fair value. ASU 2016-01 also amends certain disclosure requirements associated with the fair value of financial instruments and is effective for us in the first quarter of fiscal year 2019. Based on the composition of our investment portfolio, we do not believe the adoption of ASU 2016-01 will have a material impact on our consolidated financial statements. In May 2014, the FASB issued ASU No. 2014-09, "Revenue from Contracts with Customers: Topic 606" ("ASU 2014-09"), to supersede nearly all existing revenue recognition guidance under U.S. GAAP. The core principle of ASU 2014-09 is to recognize revenues when promised goods or services are transferred to customers in an amount that reflects the consideration that is expected to be received for those goods or services. ASU 2014-09 defines a five-step process to achieve this core principle and, in doing so, it is possible more judgment and estimates may be required within the revenue recognition process than required under existing U.S. GAAP including identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. ASU 2014-09 permits two methods of adoption: (i) retrospective to each prior reporting period presented; or (ii) retrospective with the cumulative effect of initially applying the guidance recognized at the date of initial application. In August 2015, the FASB issued ASU No. 2015-14, Revenue from Contracts with Customers: Deferral of the Effective Date, which deferred the effective date of the new revenue standard for periods beginning after December 15, 2016 to December 15, 2017, with early adoption permitted but not earlier than the original effective date. Accordingly, the updated standard is effective for us in the first quarter of fiscal 2019 and we do not plan to early adopt. In the first quarter of fiscal 2017, we commenced a project to assess the potential impact of the new standard on our consolidated financial statements and related disclosures. This project also includes the assessment and enhancement of our internal processes and systems to address the new standard. We have not yet selected a transition method.

Business Acquisitions Business

Business Acquisitions Business Acquisitions (Tables)	9 Months Ended
	Jun. 30, 2017
Business Acquisition [Line Items]
Business Acquisitions Components Of Acquisition Related Costs Table [Text Block]	The components of acquisition-related costs, net are as follows (dollars in thousands): Three Months Ended June 30, Nine Months Ended June 30, 2017 2016 2017 2016 Transition and integration costs $ 3,722 $ 1,332 $ 11,044 $ 3,367 Professional service fees 3,905 3,531 11,896 6,131 Acquisition-related adjustments 19 (142 ) (889 ) (1,072 ) Total $ 7,646 $ 4,721 $ 22,051 $ 8,426
TouchCommerce, Inc. [Member]
Business Acquisition [Line Items]
Schedule of Business Acquisitions, by Acquisition [Table Text Block]	A summary of the preliminary allocation of the purchase consideration for our TouchCommerce acquisition is as follows (dollars in thousands): Touch-Commerce Purchase consideration: Cash $ 113,008 Common stock (a) 85,000 Deferred acquisition payment 19,458 Total purchase consideration $ 217,466 Allocation of the purchase consideration: Cash $ 137 Accounts receivable (b) 14,897 Goodwill 117,178 Identifiable intangible assets (c) 110,800 Other assets 1,521 Total assets acquired 244,533 Current liabilities (4,134 ) Deferred tax liability (19,515 ) Deferred revenue (2,784 ) Other long term liabilities (634 ) Total liabilities assumed (27,067 ) Net assets acquired $ 217,466 (a) 5,749,807 shares of our common stock valued at $14.78 per share were issued at closing. (b) Accounts receivable have been recorded at their estimated fair values and the fair value reserve was not material. (c) The following are the identifiable intangible assets acquired and their respective weighted average useful lives, as determined based on preliminary valuations (dollars in thousands): TouchCommerce Amount Weighted Average Life (Years) Core and completed technology $ 26,000 6.0 Customer relationships 81,600 10.0 Trade names 3,200 5.0 Total $ 110,800

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	9 Months Ended
	Jun. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Changes in Carrying Amount of Goodwill and Intangible Assets	The changes in the carrying amount of goodwill and intangible assets for the nine months ended June 30, 2017 , are as follows (dollars in thousands): Goodwill Intangible Assets Balance at September 30, 2016 $ 3,508,879 $ 762,220 Acquisitions 61,823 78,403 Purchase accounting adjustments (321 ) — Amortization — (133,418 ) Effect of foreign currency translation 8,308 872 Balance at June 30, 2017 $ 3,578,689 $ 708,077

Financial Instruments and Hed27

Financial Instruments and Hedging Activities (Tables)	9 Months Ended
	Jun. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Quantitative Summary of Fair Value of Derivative Instruments	The following table provides a quantitative summary of the fair value of our derivative instruments as of June 30, 2017 and September 30, 2016 (dollars in thousands): Derivatives Not Designated as Hedges: Balance Sheet Classification Fair Value June 30, 2017 September 30, 2016 Foreign currency contracts Prepaid expenses and other current assets $ 202 $ 335
Summarized Activity of Derivative Instruments	The following tables summarize the activity of derivative instruments for the nine months ended June 30, 2017 and 2016 (dollars in thousands): Three Months Ended June 30, Nine Months Ended June 30, Derivatives Not Designated as Hedges Location of Gain (Loss) Recognized in Income 2017 2016 2017 2016 Foreign currency contracts Other expense, net $ 175 $ (2,261 ) $ (7,885 ) $ (27 )

Fair Value Measures (Tables)

Fair Value Measures (Tables)	9 Months Ended
	Jun. 30, 2017
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value on Recurring Basis	Assets and liabilities measured at fair value on a recurring basis at June 30, 2017 and September 30, 2016 consisted of the following (dollars in thousands): June 30, 2017 Level 1 Level 2 Level 3 Total Assets: Money market funds (a) $ 556,549 $ — $ — $ 556,549 US government agency securities (a) 1,005 — — 1,005 Time deposits (b) — 87,190 — 87,190 Commercial paper, $51,116 at cost (b) — 51,147 — 51,147 Corporate notes and bonds, $69,154 at cost (b) — 69,204 — 69,204 Foreign currency exchange contracts (b) — 202 — 202 Total assets at fair value $ 557,554 $ 207,743 $ — $ 765,297 Liabilities: Contingent acquisition payments (c) $ — $ — $ (11,351 ) $ (11,351 ) Total liabilities at fair value $ — $ — $ (11,351 ) $ (11,351 ) September 30, 2016 Level 1 Level 2 Level 3 Total Assets: Money market funds (a) $ 331,419 $ — $ — $ 331,419 US government agency securities (a) 1,002 — — 1,002 Time deposits (b) — 33,794 — 33,794 Commercial paper, $38,108 at cost (b) — 38,142 — 38,142 Corporate notes and bonds, $54,484 at cost (b) — 54,536 — 54,536 Foreign currency exchange contracts (b) — 335 — 335 Total assets at fair value $ 332,421 $ 126,807 $ — $ 459,228 Liabilities: Contingent acquisition payments (c) $ — $ — $ (8,240 ) $ (8,240 ) Total liabilities at fair value $ — $ — $ (8,240 ) $ (8,240 ) (a) Money market funds and U.S. government agency securities, included in cash and cash equivalents in the accompanying balance sheets, are valued at quoted market prices in active markets. (b) The fair values of our time deposits, commercial paper, corporate notes and bonds, and foreign currency exchange contracts are based on the most recent observable inputs for similar instruments in active markets or quoted prices for identical or similar instruments in markets that are not active or are directly or indirectly observable. Time deposits are generally for terms of one year or less. The time deposits, commercial paper and corporate notes and bonds mature within three years and have a weighted average maturity of 0.75 years as of June 30, 2017 . (c) The fair values of our contingent consideration arrangements are determined based on our evaluation as to the probability and amount of any earn-out that will be achieved based on expected future performance by the acquired entity.
Changes in Fair Value of Contingent Earn-Out Liabilities	The following table provides a summary of changes in fair value of our Level 3 financial instruments for the three and nine months ended June 30, 2017 and 2016 (dollars in thousands): Three Months Ended June 30, Nine Months Ended June 30, 2017 2016 2017 2016 Balance at beginning of period $ 6,377 $ 20,825 $ 8,240 $ 15,961 Earn-out liabilities established at time of acquisition 5,000 1,455 8,253 3,955 Payments and foreign currency translation (26 ) 1,538 (4,283 ) 2,910 Adjustments to fair value included in acquisition-related costs, net — 333 (859 ) 1,325 Balance at end of period $ 11,351 $ 24,151 $ 11,351 $ 24,151

Accrued Expenses and Other Cu29

Accrued Expenses and Other Current Liabilities (Tables)	9 Months Ended
	Jun. 30, 2017
Payables and Accruals [Abstract]
Accrued Expenses and Other Current Liabilities	Accrued expenses and other current liabilities consisted of the following (dollars in thousands): June 30, 2017 September 30, 2016 Compensation $ 132,572 $ 154,028 Accrued interest payable 23,429 20,409 Cost of revenue related liabilities 16,875 19,351 Consulting and professional fees 16,062 18,001 Facilities related liabilities 8,248 7,382 Sales and other taxes payable 3,792 2,708 Sales and marketing incentives 3,334 6,508 Other 13,843 9,272 Total $ 218,155 $ 237,659

Deferred Revenue (Tables)

Deferred Revenue (Tables)	9 Months Ended
	Jun. 30, 2017
Deferred Revenue [Abstract]
Deferred Revenue	Deferred revenue consisted of the following (dollars in thousands): June 30, 2017 September 30, 2016 Current liabilities: Deferred maintenance revenue $ 158,939 $ 165,902 Unearned revenue 215,094 183,271 Total current deferred revenue $ 374,033 $ 349,173 Long-term liabilities: Deferred maintenance revenue $ 59,604 $ 59,955 Unearned revenue 365,031 327,005 Total long-term deferred revenue $ 424,635 $ 386,960

Restructuring and Other Charg31

Restructuring and Other Charges, net (Tables)	9 Months Ended
	Jun. 30, 2017
Restructuring and Related Activities [Abstract]
Accrual Activity Relating to Restructuring and Other Charges	The following table sets forth accrual activity relating to restructuring reserves for the nine months ended June 30, 2017 (dollars in thousands): Personnel Facilities Total Balance at September 30, 2016 $ 2,661 $ 11,132 $ 13,793 Restructuring charges, net 12,279 5,708 17,987 Non-cash adjustment — (1,433 ) (1,433 ) Cash payments (11,747 ) (5,104 ) (16,851 ) Balance at June 30, 2017 $ 3,193 $ 10,303 $ 13,496
Restructuring and Other Charges, Net by Segment	While restructuring and other charges, net are excluded from our calculation of segment profit, the table below presents the restructuring and other charges, net associated with each segment (dollars in thousands): Three Months Ended June 30, 2017 2016 Personnel Facilities Total Restructuring Other Charges Total Personnel Facilities Total Restructuring Other Charges Total Healthcare $ 993 $ — $ 993 $ 4,065 $ 5,058 $ 49 $ 1,344 $ 1,393 $ — $ 1,393 Mobile 866 (511 ) 355 — 355 62 1,222 1,284 — 1,284 Enterprise 1,910 2,040 3,950 — 3,950 (8 ) 494 486 — 486 Imaging 43 — 43 — 43 7 294 301 — 301 Corporate 241 25 266 3,363 3,629 (249 ) 2,502 2,253 — 2,253 Total $ 4,053 $ 1,554 $ 5,607 $ 7,428 $ 13,035 $ (139 ) $ 5,856 $ 5,717 $ — $ 5,717 Nine Months Ended June 30, 2017 2016 Personnel Facilities Total Restructuring Other Charges Total Personnel Facilities Total Restructuring Other Charges Total Healthcare $ 3,554 $ 870 $ 4,424 $ 4,065 $ 8,489 $ 1,363 $ 1,352 $ 2,715 $ — $ 2,715 Mobile 4,133 (460 ) 3,673 10,773 14,446 4,973 1,172 6,145 46 6,191 Enterprise 2,722 2,904 5,626 — 5,626 1,035 2,528 3,563 — 3,563 Imaging 629 387 1,016 — 1,016 219 478 697 — 697 Corporate 1,241 2,007 3,248 6,824 10,072 1,820 5,210 7,030 61 7,091 Total $ 12,279 $ 5,708 $ 17,987 $ 21,662 $ 39,649 $ 9,410 $ 10,740 $ 20,150 $ 107 $ 20,257

Debt and Credit Facilities (Tab

Debt and Credit Facilities (Tables)	9 Months Ended
	Jun. 30, 2017
Debt Disclosure [Abstract]
Schedule of Maturities of Long-term Debt [Table Text Block]	The following table summarizes the maturities of our borrowing obligations as of June 30, 2017 (dollars in thousands): Fiscal Year Convertible Debentures (1) Senior Notes Total 2017 $ — $ — $ — 2018 377,740 — 377,740 2019 — — — 2020 — 450,000 450,000 2021 — — — Thereafter 1,290,383 800,000 2,090,383 Total before unamortized discount 1,668,123 1,250,000 2,918,123 Less: unamortized discount and issuance costs (306,350 ) (11,116 ) (317,466 ) Total long-term debt $ 1,361,773 $ 1,238,884 $ 2,600,657 (1) Holders of the 1.0% 2035 Debentures have the right to require us to redeem the debentures on December 15, 2022, 2027 and 2032. Holders of the 2031 Debentures have the right to require us to redeem the debentures on November 1, 2017, 2021, and 2026. Holders of the 1.5% 2035 Debentures have the right to require us to redeem the debentures on November 1, 2021, 2026, and 2031.
Borrowing Obligations and Applicable Margin for Borrowings	At June 30, 2017 and September 30, 2016 , we had the following long-term borrowing obligations (dollars in thousands): June 30, 2017 September 30, 2016 5.625% Senior Notes due 2026, net of deferred issuance costs of $6.2 million. Effective interest rate 5.625%. $ 493,797 $ — 5.375% Senior Notes due 2020, net of unamortized premium of $1.0 million and $3.0 million, respectively, and deferred issuance costs of $2.5 million and $7.3 million, respectively. Effective interest rate 5.375%. 448,511 1,046,851 6.000% Senior Notes due 2024, net of deferred issuance costs of $2.2 million and $2.4 million, respectively. Effective interest rate 6.000%. 297,833 297,601 1.00% Convertible Debentures due 2035, net of unamortized discount of $146.7 million and $163.5 million, respectively, and deferred issuance costs of $7.2 million and $8.2 million, respectively. Effective interest rate 5.622%. 522,576 504,712 2.75% Convertible Debentures due 2031, net of unamortized discount of $6.1 million and $19.2 million, respectively, and deferred issuance costs of $0.3 million and $1.1 million, respectively. Effective interest rate 7.432%. 371,321 375,208 1.25% Convertible Debentures due 2025, net of unamortized discount of $95.1 million, and deferred issuance costs of $4.4 million. Effective interest rate 5.578%. 250,439 — 1.50% Convertible Debentures due 2035, net of unamortized discount of $44.9 million and $51.7 million, respectively, and deferred issuance costs of $1.6 million and $1.9 million, respectively. Effective interest rate 5.394%. 217,437 210,286 Deferred issuance costs related to our Revolving Credit Facility (1,257 ) (1,506 ) Total long-term debt 2,600,657 2,433,152 Less: current portion 371,321 — Non-current portion of long-term debt $ 2,229,336 $ 2,433,152

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	9 Months Ended
	Jun. 30, 2017
Share-based Compensation [Abstract]
Stock Based Compensation Included in Consolidated Statements of Operations	The amounts included in the consolidated statements of operations relating to stock-based compensation are as follows (dollars in thousands): Three Months Ended June 30, Nine Months Ended June 30, 2017 2016 2017 2016 Cost of professional services and hosting $ 8,385 $ 8,112 $ 24,875 $ 23,626 Cost of product and licensing 104 42 298 286 Cost of maintenance and support 1,130 1,083 3,117 3,074 Research and development 9,610 9,157 26,498 27,056 Selling and marketing 11,981 13,726 34,968 37,023 General and administrative 11,121 10,327 32,053 31,892 Total $ 42,331 $ 42,447 $ 121,809 $ 122,957
Summary of Stock Options Activity	The table below summarizes activity relating to stock options for the nine months ended June 30, 2017 : Number of Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term Aggregate Intrinsic Value (a) Outstanding at September 30, 2016 1,965,826 $ 15.01 Exercised (1,932,286 ) $ 14.98 Expired (7,595 ) $ 20.01 Outstanding at June 30, 2017 25,945 $ 15.77 2.8 years $ 0.1 million Exercisable at June 30, 2017 25,936 $ 15.78 2.8 years $ 0.1 million Exercisable at June 30, 2016 1,975,656 $ 14.97 1.0 year $ 2.2 million (a) The aggregate intrinsic value in this table was calculated based on the positive difference, if any, between the closing market price of our common stock on June 30, 2017 ( $17.41 ) and the exercise price of the underlying options.
Summary of Activity Relating to Restricted Units and Restricted Stock Awards	The table below summarizes activity relating to restricted units for the nine months ended June 30, 2017 : Number of Shares Underlying Restricted Units — Contingent Awards Number of Shares Underlying Restricted Units — Time-Based Awards Outstanding at September 30, 2016 4,224,488 5,884,023 Granted 3,108,321 6,267,257 Earned/released (1,788,014 ) (5,454,085 ) Forfeited (455,176 ) (476,398 ) Outstanding at June 30, 2017 5,089,619 6,220,797 Weighted average remaining recognition period of outstanding restricted units 1.4 years 1.7 years Unearned stock-based compensation expense of outstanding restricted units $56.5 million $68.1 million Aggregate intrinsic value of outstanding restricted units (a) $88.6 million $108.4 million (a) The aggregate intrinsic value in this table was calculated based on the positive difference between the closing market price of our common stock on June 30, 2017 ( $17.41 ) and the purchase price of the underlying restricted units. Restricted stock awards are included in the issued and outstanding common stock at the date of grant. The table below summarizes activity related to restricted stock awards for the nine months ended June 30, 2017 : Number of Shares Underlying Restricted Stock Weighted Average Grant Date Fair Value Outstanding at September 30, 2016 — $ — Granted 250,000 $ 15.55 Outstanding at June 30, 2017 250,000 $ 15.55 Weighted average remaining recognition period of outstanding restricted stock awards 0.3 years Unearned stock-based compensation expense of outstanding restricted stock awards $1.1 million Aggregate intrinsic value of outstanding restricted stock awards (a) $4.4 million
Summary of Weighted-Average Grant-Date Fair Value and Intrinsic Value of Restricted Units and Restricted Stock Awards Vested	A summary of weighted-average grant-date fair value for awards granted and intrinsic value of all restricted units vested during the periods noted is as follows: Nine Months Ended June 30, 2017 2016 Weighted-average grant-date fair value per share $ 16.10 $ 19.20 Total intrinsic value of shares vested (in millions) $ 119.2 $ 150.7

Income Taxes (Tables)

Income Taxes (Tables)	9 Months Ended
	Jun. 30, 2017
Income Tax Disclosure [Abstract]
Components of Benefit from Income Taxes	The components of loss before income taxes are as follows (dollars in thousands): Three Months Ended June 30, Nine Months Ended June 30, 2017 2016 2017 2016 Domestic $ (58,871 ) $ (39,615 ) $ (148,257 ) $ (102,308 ) Foreign 33,644 35,640 84,788 96,234 Loss before income taxes $ (25,227 ) $ (3,975 ) $ (63,469 ) $ (6,074 ) The components of provision from income taxes are as follows (dollars in thousands): Three Months Ended June 30, Nine Months Ended June 30, 2017 2016 2017 2016 Domestic $ (3,029 ) $ 3,411 $ 5,952 $ 12,970 Foreign 5,638 4,435 16,151 11,888 Provision for income taxes $ 2,609 $ 7,846 $ 22,103 $ 24,858 Effective tax rate (10.3 )% (197.4 )% (34.8 )% (409.3 )%

Segment and Geographic Inform35

Segment and Geographic Information and Significant Customers (Tables)	9 Months Ended
	Jun. 30, 2017
Segment Reporting [Abstract]
Segment Results Along with Reconciliation of Segment Profit to Income Before Income Taxes	The following table presents segment results along with a reconciliation of segment profit to loss before income taxes (dollars in thousands): Three Months Ended Nine Months Ended June 30, June 30, 2017 2016 2017 2016 Segment revenues (a) : Healthcare $ 232,641 $ 240,986 $ 710,315 $ 733,461 Mobile 101,515 91,778 293,525 280,017 Enterprise 112,064 95,249 344,359 278,467 Imaging 49,404 56,848 154,541 175,199 Total segment revenues 495,624 484,861 1,502,740 1,467,144 Less: acquisition-related revenues adjustments (9,403 ) (7,010 ) (29,288 ) (24,445 ) Total consolidated revenues 486,221 477,851 1,473,452 1,442,699 Segment profit: Healthcare 70,457 78,129 232,353 237,740 Mobile 41,428 30,983 115,336 98,196 Enterprise 34,419 31,065 108,149 91,336 Imaging 16,943 20,597 53,029 69,774 Total segment profit 163,247 160,774 508,867 497,046 Corporate expenses and other, net (31,683 ) (30,888 ) (92,829 ) (97,489 ) Acquisition-related revenues and cost of revenues adjustments (9,403 ) (6,460 ) (29,288 ) (23,520 ) Stock-based compensation (42,331 ) (42,447 ) (121,809 ) (122,957 ) Amortization of intangible assets (44,887 ) (41,855 ) (133,418 ) (127,306 ) Acquisition-related costs, net (7,646 ) (4,721 ) (22,051 ) (8,426 ) Restructuring and other charges, net (13,035 ) (5,717 ) (39,649 ) (20,257 ) Costs associated with IP collaboration agreements — — — (4,000 ) Other expense, net (39,489 ) (32,661 ) (133,292 ) (99,165 ) Loss before income taxes $ (25,227 ) $ (3,975 ) $ (63,469 ) $ (6,074 ) (a) Segment revenues differ from reported revenues due to certain revenue adjustments related to acquisitions that would otherwise have been recognized but for the purchase accounting treatment of the business combinations. These revenues are included to allow for more complete comparisons to the financial results of historical operations and in evaluating management performance.
Classification of Revenue By Major Geographic Areas	Revenues, classified by the major geographic areas in which our customers are located, were as follows (dollars in thousands): Three Months Ended Nine Months Ended June 30, June 30, 2017 2016 2017 2016 United States $ 341,826 $ 341,252 $ 1,043,933 $ 1,035,776 International 144,395 136,599 429,519 406,923 Total revenues $ 486,221 $ 477,851 $ 1,473,452 $ 1,442,699

Business Acquisitions (Summary

Business Acquisitions (Summary of Preliminary Allocation of Purchase Consideration) (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2016	Jun. 30, 2017	Sep. 30, 2016	Aug. 16, 2016
Business Acquisition [Line Items]
Number of Years in Measurement Period from Acquisition Date to Change Underlying Assumptions		1 year
Allocation of the purchase consideration:
Cash				$ 137
Accounts receivable(b)				14,897
Goodwill				117,178
Identifiable intangible assets(c)				110,800
Other assets				1,521
Total assets acquired				244,533
Current liabilities				4,134
Deferred tax liability				19,515
Deferred revenue				2,784
Other long term liabilities				634
Total liabilities assumed				27,067
Net assets acquired				217,466
Closing market value of common stock		$ 17.41
Intangible Assets Acquired				$ 110,800
TouchCommerce, Inc. [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross	$ 217,466
Allocation of the purchase consideration:
Stock Issued During Period, Shares, Acquisitions	5,749,807
Closing market value of common stock				$ 14.78
TouchCommerce, Inc. [Member] | Cash Distribution [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross	$ 113,008
TouchCommerce, Inc. [Member] | Share Distribution [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross	85,000
TouchCommerce, Inc. [Member] | Contingent and deferred acquisition payment [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross	$ 19,458
Other Acquisitions [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross		$ 97,200	$ 50,400
Allocation of the purchase consideration:
Stock Issued During Period, Shares, Acquisitions		844,108
Other Acquisitions [Member] | Share Distribution [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross		$ 13,400
Other Acquisitions [Member] | Contingent Consideration Payments [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross		$ 8,300
Technology-Based Intangible Assets [Member]
Allocation of the purchase consideration:
Intangible Assets Acquired				$ 26,000
Weighted Average Useful Life, Intangible Assets Acquired	6 years
Customer Relationships [Member]
Allocation of the purchase consideration:
Intangible Assets Acquired				81,600
Weighted Average Useful Life, Intangible Assets Acquired	10 years
Trade Names [Member]
Allocation of the purchase consideration:
Intangible Assets Acquired				$ 3,200
Weighted Average Useful Life, Intangible Assets Acquired	5 years

Business Acquisitions (Componen

Business Acquisitions (Components of Acquisition-Related Costs, Net) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Business Acquisition [Line Items]
Transition and integration costs	$ 3,722	$ 1,332	$ 11,044	$ 3,367
Professional service fees	3,905	3,531	11,896	6,131
Acquisition-related adjustments	19	(142)	(889)	(1,072)
Total	$ 7,646	$ 4,721	$ 22,051	$ 8,426

Changes in Carrying Amount of G

Changes in Carrying Amount of Goodwill and Intangible Assets (Detail) $ in Thousands	9 Months Ended
	Jun. 30, 2017USD ($)
Goodwill [Roll Forward]
Balance at September 30, 2016	$ 3,508,879
Goodwill, Acquired During Period	61,823
Goodwill, Purchase Accounting Adjustments	(321)
Amortization	0
Effect of foreign currency translation	8,308
Balance at June 30, 2017	3,578,689
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Balance at September 30, 2016	762,220
Finite-lived Intangible Assets Acquired	78,403
Finite-Lived Intangible Assets, Purchase Accounting Adjustments	0
Amortization	(133,418)
Effect of foreign currency translation	872
Balance at June 30, 2017	$ 708,077

Goodwill and Intangible Asset39

Goodwill and Intangible Assets Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2017	Sep. 30, 2016	Jul. 01, 2016
Finite-Lived Intangible Assets [Line Items]
Document Period End Date	Jun. 30, 2017
Finite-lived Intangible Assets Acquired	$ 78,403
Finite-Lived Intangible Assets, Purchase Accounting Adjustments	0
Goodwill	3,578,689	$ 3,508,879
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired	35,000
Healthcare [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill	1,400,000
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount			160.00%
Imaging [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 300,000
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount			170.00%

Financial Instruments and Hed40

Financial Instruments and Hedging Activities (Additional Information) (Detail) - Derivatives Not Designated as Hedges - USD ($) $ in Millions	9 Months Ended
	Jun. 30, 2017	Sep. 30, 2016
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative, Notional Amount	$ 99.4	$ 215.2
Maximum
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Term of foreign currency forward contracts	90 days

Financial Instruments and Hed41

Financial Instruments and Hedging Activities (Quantitative Summary of Fair Value of Derivative Instruments) (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Sep. 30, 2016
Foreign currency contracts | Prepaid Expenses and Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	$ 202	$ 335

Financial Instruments and Hed42

Financial Instruments and Hedging Activities (Summarized Activity of Derivative Instruments) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Derivative Instruments, Gain (Loss) [Line Items]
Document Period End Date			Jun. 30, 2017
Derivatives Not Designated as Hedges | Foreign currency contracts | Other expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income	$ 175	$ (2,261)	$ (7,885)	$ (27)

Fair Value Measures (Assets and

Fair Value Measures (Assets and Liabilities Measured at Fair Value on Recurring Basis) (Detail) - USD ($)		9 Months Ended
		Jun. 30, 2017	Sep. 30, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Document Period End Date		Jun. 30, 2017
Fair Value, Measurements, Recurring
Assets:
Money market funds	[1]	$ 556,549,000	$ 331,419,000
US government agency securities	[1]	1,005,000	1,002,000
Bank Time Deposits, Fair Value Disclosure		87,190,000	33,794,000
Commercial Paper, Fair value		51,147,000	38,142,000
Corporate notes and bonds, Fair Value		69,204,000	54,536,000
Foreign Currency Contract, Asset, Fair Value Disclosure	[2]	202,000	335,000
Total assets at fair value		765,297,000	459,228,000
Liabilities:
Contingent earn-out		(11,351,000)	(8,240,000)
Total liabilities at fair value		(11,351,000)	(8,240,000)
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1
Assets:
Money market funds		556,549,000	331,419,000
US government agency securities		1,005,000	1,002,000
Bank Time Deposits, Fair Value Disclosure		0	0
Commercial Paper, Fair value		0	0
Corporate notes and bonds, Fair Value		0	0
Foreign Currency Contract, Asset, Fair Value Disclosure		0	0
Total assets at fair value		557,554,000	332,421,000
Liabilities:
Contingent earn-out		0	0
Total liabilities at fair value		0	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Assets:
Money market funds		0	0
US government agency securities		0	0
Bank Time Deposits, Fair Value Disclosure		87,190,000	33,794,000
Commercial Paper, Fair value		51,147,000	38,142,000
Corporate notes and bonds, Fair Value		69,204,000	54,536,000
Foreign Currency Contract, Asset, Fair Value Disclosure		202,000	335,000
Total assets at fair value		207,743,000	126,807,000
Liabilities:
Contingent earn-out		0	0
Total liabilities at fair value		0	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3
Assets:
Money market funds		0	0
US government agency securities		0	0
Bank Time Deposits, Fair Value Disclosure		0	0
Commercial Paper, Fair value		0	0
Corporate notes and bonds, Fair Value		0	0
Foreign Currency Contract, Asset, Fair Value Disclosure		0	0
Total assets at fair value		0	0
Liabilities:
Contingent earn-out		(11,351,000)	(8,240,000)
Total liabilities at fair value		(11,351,000)	(8,240,000)
Corporate Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Amortized Cost Basis		69,154,000	54,484,000
Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Amortized Cost Basis		$ 51,116,000	$ 38,108,000
Commercial paper, corporate notes and bonds [Member]
Liabilities:
Available for sale Securities, Weighted Average Maturity		9 months
[1]	Money market funds and U.S. government agency securities, included in cash and cash equivalents in the accompanying balance sheets, are valued at quoted market prices in active markets.
[2]	The fair values of our time deposits, commercial paper, corporate notes and bonds, and foreign currency exchange contracts are based on the most recent observable inputs for similar instruments in active markets or quoted prices for identical or similar instruments in markets that are not active or are directly or indirectly observable. Time deposits are generally for terms of one year or less. The time deposits, commercial paper and corporate notes and bonds mature within three years and have a weighted average maturity of 0.75 years as of June 30, 2017.

Fair Value Measures (Changes in

Fair Value Measures (Changes in Fair Value of Contingent Earn-Out Liabilities) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Document Period End Date			Jun. 30, 2017
Balance at beginning of period	$ 6,377	$ 20,825	$ 8,240	$ 15,961
Earn-out liabilities established at time of acquisition	5,000	1,455	8,253	3,955
Payments and foreign currency translation	(26)	(1,538)	(4,283)	(2,910)
Adjustments to fair value included in acquisition-related costs, net	0	333	(859)	1,325
Balance at end of period	11,351	$ 24,151	11,351	$ 24,151
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	$ 27,700		$ 27,700

Accrued Expenses and Other Cu45

Accrued Expenses and Other Current Liabilities (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Sep. 30, 2016
Payables and Accruals [Abstract]
Compensation	$ 132,572	$ 154,028
Accrued interest payable	23,429	20,409
Cost of revenue related liabilities	16,875	19,351
Consulting and professional fees	16,062	18,001
Facilities related liabilities	8,248	7,382
Sales and marketing incentives	3,334	6,508
Sales and other taxes payable	3,792	2,708
Other	13,843	9,272
Total	$ 218,155	$ 237,659

Deferred Revenue (Detail)

Deferred Revenue (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Sep. 30, 2016
Total current deferred revenue	$ 374,033	$ 349,173
Total long-term deferred revenue	424,635	386,960
Deferred maintenance revenue
Total current deferred revenue	158,939	165,902
Total long-term deferred revenue	59,604	59,955
Unearned revenue
Total current deferred revenue	215,094	183,271
Total long-term deferred revenue	$ 365,031	$ 327,005

Restructuring and Other Charg47

Restructuring and Other Charges, net (Accrual Activity Relating to Restructuring and Other Charges) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Restructuring [Roll Forward]
Balance at September 30, 2016			$ 13,793
Restructuring charges	$ 5,607	$ 5,717	17,987	$ 20,150
Restructuring Reserve, Accrual Adjustment			(1,433)
Cash payments			(16,851)
Balance at June 30, 2017	13,496		13,496
Personnel
Restructuring [Roll Forward]
Balance at September 30, 2016			2,661
Restructuring charges			12,279
Restructuring Reserve, Accrual Adjustment			0
Cash payments			(11,747)
Balance at June 30, 2017	3,193		3,193
Facilities
Restructuring [Roll Forward]
Balance at September 30, 2016			11,132
Restructuring charges			5,708
Restructuring Reserve, Accrual Adjustment			(1,433)
Cash payments			(5,104)
Balance at June 30, 2017	$ 10,303		$ 10,303

Restructuring and Other Charg48

Restructuring and Other Charges, net (By Segment) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Restructuring Cost and Reserve [Line Items]
Document Period End Date			Jun. 30, 2017
Restructuring and other charges, net	$ 13,035	$ 5,717	$ 39,649	$ 20,257
Restructuring charges	5,607	5,717	17,987	20,150
Healthcare
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	5,058	1,393	8,489	2,715
Restructuring charges	993	1,393	4,424	2,715
Mobile
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	355	1,284	14,446	6,191
Restructuring charges	355	1,284	3,673	6,145
Enterprise
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	3,950	486	5,626	3,563
Restructuring charges	3,950	486	5,626	3,563
Imaging
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	43	301	1,016	697
Restructuring charges	43	301	1,016	697
Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	3,629	2,253	10,072	7,091
Restructuring charges	266	2,253	3,248	7,030
Personnel
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	4,053	(139)		9,410
Restructuring charges			12,279
Personnel | Healthcare
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	993	49	3,554	1,363
Personnel | Mobile
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	866	62	4,133	4,973
Personnel | Enterprise
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	1,910	8	2,722	1,035
Personnel | Imaging
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	43	(7)	629	219
Personnel | Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	241	(249)	1,241	1,820
Facilities
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	1,554	5,856		10,740
Restructuring charges			5,708
Facilities | Healthcare
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	0	1,344	870	1,352
Facilities | Mobile
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	(511)	(1,222)	(460)	(1,172)
Facilities | Enterprise
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	2,040	494	2,904	2,528
Facilities | Imaging
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	0	294	387	478
Facilities | Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	25	2,502	2,007	5,210
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	7,428	0	21,662	107
Other Restructuring [Member] | Healthcare
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	4,065	0	4,065	0
Other Restructuring [Member] | Mobile
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	0	0	10,773	46
Other Restructuring [Member] | Enterprise
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	0	0	0	0
Other Restructuring [Member] | Imaging
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	0	0	0	0
Other Restructuring [Member] | Corporate
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	$ 3,363	$ 0	$ 6,824	$ 61

Restructuring and Other Charg49

Restructuring and Other Charges, net (Additional Information) (Detail) $ in Thousands	3 Months Ended			9 Months Ended
	Jun. 30, 2017USD ($)	Dec. 31, 2016USD ($)	Jun. 30, 2016USD ($)	Jun. 30, 2017USD ($)	Jun. 30, 2016USD ($)	Sep. 30, 2016USD ($)
Restructuring Cost and Reserve [Line Items]
Document Period End Date				Jun. 30, 2017
Restructuring Reserve	$ 13,496			$ 13,496		$ 13,793
Tangible Asset Impairment Charges		$ 10,800
Restructuring charges	5,607		$ 5,717	$ 17,987	$ 20,150
Number of personnel eliminated				300	200
Payments for Restructuring				$ 16,851
Personnel
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	4,053		(139)		$ 9,410
Restructuring Reserve	3,193			3,193		2,661
Restructuring charges				12,279
Payments for Restructuring				11,747
Facilities
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	1,554		5,856		10,740
Restructuring Reserve	10,303			10,303		$ 11,132
Restructuring charges				5,708
Payments for Restructuring				5,104
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	7,428		0	21,662	107
Malware Incident - Other Charges [Member]
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs				5,200
Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring charges	266		2,253	3,248	7,030
Corporate | Personnel
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	241		(249)	1,241	1,820
Corporate | Facilities
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	25		2,502	2,007	5,210
Corporate | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	3,363		$ 0	6,824	$ 61
Corporate | Chief Executive Officer [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	$ 2,300			$ 5,800

Debt and Credit Facilities (Bor

Debt and Credit Facilities (Borrowing Obligations) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Dec. 22, 2016	Sep. 30, 2016	Jun. 21, 2016	Oct. 22, 2012	Aug. 14, 2012
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	$ 0
Long-term Debt, Maturities, Repayments of Principal in Year Two	377,740
Long-term Debt, Maturities, Repayments of Principal in Year Three	0
Long-term Debt, Maturities, Repayments of Principal in Year Four	450,000
Long-term Debt, Maturities, Repayments of Principal in Year Five	0
Long-term Debt, Maturities, Repayments of Principal in Rolling after Year Five	2,090,383
Total long-term debt	2,600,657			$ 2,433,152
Less: current portion	371,321			0
Non-current portion of long-term debt	2,229,336			2,433,152
Debt Issuance Costs, Noncurrent, Net	(1,257)			(1,506)
Long-term Debt, Gross	2,918,123
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net	(317,466)
5.625% Senior Notes due 2026 [Member]
Debt Instrument [Line Items]
Senior Notes, net of unamortized premium	493,797		$ 500,000	0
5.375% Senior Notes due August 15, 2020
Debt Instrument [Line Items]
Senior Notes, net of unamortized premium	448,511			1,046,851		$ 350,000	$ 700,000
Repayments of Debt	600,000
6.0% Senior Notes due 2024 [Member]
Debt Instrument [Line Items]
Senior Notes, net of unamortized premium	297,833			297,601	$ 300,000
Convertible Debentures One Percent Due Twenty Thirty Five [Member]
Debt Instrument [Line Items]
Senior Notes, net of unamortized premium	522,576			504,712
Convertible Debentures Two Point Seven Five Percent Due November One Twenty Thirty One [Member]
Debt Instrument [Line Items]
Convertible Debentures, net of unamortized discount	371,321			375,208
1.25% Convertible Debentures due 2025 [Member]
Debt Instrument [Line Items]
Convertible Debentures, net of unamortized discount	250,439			0
Convertible Debentures One Point Five Percent Due November One Twenty Thirty Five [Member] [Member]
Debt Instrument [Line Items]
Convertible Debentures, net of unamortized discount	217,437			$ 210,286
Term Loan Facility Due August Seventh Twenty Ninteen [Member]
Debt Instrument [Line Items]
Repayments of Debt		$ 472,500
Senior Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	0
Long-term Debt, Maturities, Repayments of Principal in Year Two	0
Long-term Debt, Maturities, Repayments of Principal in Year Three	0
Long-term Debt, Maturities, Repayments of Principal in Year Four	450,000
Long-term Debt, Maturities, Repayments of Principal in Year Five	0
Long-term Debt, Maturities, Repayments of Principal in Rolling after Year Five	800,000
Total long-term debt	1,238,884
Long-term Debt, Gross	1,250,000
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net	(11,116)
Convertible Debt [Member]
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	0
Long-term Debt, Maturities, Repayments of Principal in Year Two	377,740
Long-term Debt, Maturities, Repayments of Principal in Year Three	0
Long-term Debt, Maturities, Repayments of Principal in Year Four	0
Long-term Debt, Maturities, Repayments of Principal in Year Five	0
Long-term Debt, Maturities, Repayments of Principal in Rolling after Year Five	1,290,383
Total long-term debt	1,361,773
Long-term Debt, Gross	1,668,123
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net	$ (306,350)

Debt and Credit Facilities Borr

Debt and Credit Facilities Borrowing Obligations Detail (Details) - USD ($) $ in Millions	Jun. 30, 2017	Sep. 30, 2016
Borrowing Obligations Detail [Abstract]
Long-term Debt, Fair Value	$ 2,966.4	$ 2,630.3
Long-term debt, face value	$ 2,918.1	$ 2,687.1

Debt and Credit Facilities 5.37

Debt and Credit Facilities 5.375% Senior Notes due 2020 (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Jun. 30, 2017	Jun. 30, 2017	Jun. 30, 2016	Jan. 09, 2017	Sep. 30, 2016	Oct. 22, 2012	Aug. 14, 2012
Debt Instrument [Line Items]
Long-term debt, face value	$ 2,918,100	$ 2,918,100			$ 2,687,100
Document Period End Date		Jun. 30, 2017
Loss on extinguishment of debt		$ (18,565)	$ (4,851)
5.375% Senior Notes due August 15, 2020
Debt Instrument [Line Items]
Long-term debt, face value				$ 450,000
Senior Notes, Noncurrent	448,511	448,511			1,046,851	$ 350,000	$ 700,000
Unamortized Debt Issuance Expense	2,500	$ 2,500			$ 7,300
Repayments of Debt	600,000
Loss on extinguishment of debt	$ 18,400

Debt and Credit Facilities 6.0%

Debt and Credit Facilities 6.0% Senior Notes due 2024 (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Sep. 30, 2016	Jun. 21, 2016
Debt Instrument [Line Items]
Proceeds from Issuance of Long-term Debt		$ 838,081	$ 959,860
6.0% Senior Notes due 2024 [Member]
Debt Instrument [Line Items]
Senior Notes, Noncurrent		297,833		$ 297,601	$ 300,000
Proceeds from Issuance of Long-term Debt	$ 297,500
Unamortized Debt Issuance Expense		$ 2,200

Debt and Credit Facilities 1.0%

Debt and Credit Facilities 1.0% Convertible Debentures due 2035 (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Sep. 30, 2016	Dec. 07, 2015
Debt Instrument [Line Items]
Long-term debt, face value	$ 2,918,100		$ 2,687,100
Proceeds from Issuance of Long-term Debt	838,081	$ 959,860
Debt Issuance Costs, Noncurrent, Net	$ 1,257		$ 1,506
Convertible Debentures One Percent Due Twenty Thirty Five [Member]
Debt Instrument [Line Items]
Long-term debt, face value				$ 676,500
Debt Instrument, Convertible, Carrying Amount of Equity Component				$ 181,100
Debt Instrument, Convertible, Conversion Price				$ 27.22
Debt instrument, stated interest rate	1.00%		1.00%	1.00%
Convertible Debt, Noncurrent				$ 495,400

Debt and Credit Facilities 2.75

Debt and Credit Facilities 2.75% Convertible Debentures due 2031 (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2017	Jun. 30, 2016	Sep. 30, 2016	Dec. 07, 2015	Oct. 24, 2011
Debt Instrument [Line Items]
Loss on extinguishment of debt			$ (18,565)	$ (4,851)
Long-term debt, face value			2,918,100		$ 2,687,100
Debt Issuance Costs, Noncurrent, Net			1,257		1,506
Convertible Debentures Two Point Seven Five Percent Due November One Twenty Thirty One [Member]
Debt Instrument [Line Items]
Repayments of Convertible Debt	$ 38,300	$ 256,200	17,800
Long-term debt, face value						$ 377,700	$ 690,000
Debt Instrument, Convertible, Conversion Price							$ 32.30
Debt Instrument, Unamortized Discount			$ 6,100		$ 19,200
Convertible Debt, Noncurrent							$ 533,600
Debt Instrument, Convertible, Carrying Amount of Equity Component							$ 156,400

Debt and Credit Facilities 1.5%

Debt and Credit Facilities 1.5% Convertible Debentures due 2035 (Details) - USD ($) $ / shares in Units, $ in Thousands	Jun. 30, 2017	Sep. 30, 2016	Jun. 01, 2015
Debt Instrument [Line Items]
Long-term debt, face value	$ 2,918,100	$ 2,687,100
Debt Issuance Costs, Noncurrent, Net	$ 1,257	$ 1,506
Convertible Debentures One Point Five Percent Due November One Twenty Thirty Five [Member] [Member]
Debt Instrument [Line Items]
Long-term debt, face value			$ 263,900
Debt instrument, stated interest rate	1.50%	1.50%	1.50%
Debt Instrument, Convertible, Conversion Price			$ 23.26
Debt issuance Percentage of Principal Amount			97.09%
Debt Instrument, Unamortized Discount (Premium), Net			$ 7,700
Debt Instrument, Unamortized Discount	$ 44,900
Convertible Debt, Noncurrent			208,600
Debt Instrument, Convertible, Carrying Amount of Equity Component			$ 55,300

Debt and Credit Facilities Cred

Debt and Credit Facilities Credit Facility (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Sep. 30, 2016	Apr. 15, 2016
Line of Credit Facility [Line Items]
Debt Issuance Costs, Noncurrent, Net		$ 1,257		$ 1,506
Loss on extinguishment of debt		(18,565)	$ (4,851)
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		237,900			$ 242,500
Letters of Credit Outstanding, Amount		$ 4,600
Term Loan Facility Due August Seventh Twenty Ninteen [Member]
Line of Credit Facility [Line Items]
Repayments of Debt	$ 472,500

Debt and Credit Facilities Appl

Debt and Credit Facilities Applicable Borrowing Rates and Additional Detail (Details) - USD ($) $ in Millions	9 Months Ended
	Jun. 30, 2017	Dec. 22, 2016	Sep. 30, 2016	Jun. 21, 2016	Dec. 07, 2015	Jun. 01, 2015	Aug. 14, 2012	Oct. 24, 2011
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Unamortized Discount	$ 0		$ 0
5.625% Senior Notes due 2026 [Member]
Debt Instrument [Line Items]
Debt instrument, stated interest rate	5.625%	5.625%
Debt Instrument, Interest Rate, Effective Percentage	5.625%
nuan_DebtInstrumentMaturityYear	2,026
Unamortized Debt Issuance Expense	$ 6.2
6.0% Senior Notes due 2024 [Member]
Debt Instrument [Line Items]
Debt instrument, stated interest rate	6.00%		6.00%	6.00%
Debt Instrument, Interest Rate, Effective Percentage	6.00%		6.00%
nuan_DebtInstrumentMaturityYear	2,024
Unamortized Debt Issuance Expense	$ 2.2
Debt Instrument, Unamortized Premium	$ 0		$ 0
5.375% Senior Notes due August 15, 2020
Debt Instrument [Line Items]
Debt instrument, stated interest rate	5.375%		5.375%				5.375%
Debt Instrument, Interest Rate, Effective Percentage	5.28%		5.28%
nuan_DebtInstrumentMaturityYear	2,020
Unamortized Debt Issuance Expense	$ 2.5		$ 7.3
Debt Instrument, Unamortized Premium	$ (1)		$ (3)
Convertible Debentures Two Point Seven Five Percent Due November One Twenty Thirty One [Member]
Debt Instrument [Line Items]
Debt instrument, stated interest rate	2.75%		2.75%					2.75%
Debt Instrument, Interest Rate, Effective Percentage	7.432%		7.43%
nuan_DebtInstrumentMaturityYear	2,031
Unamortized Debt Issuance Expense	$ 0.3		$ 1.1
Debt Instrument, Unamortized Discount	$ 6.1		$ 19.2
Convertible Debentures One Point Five Percent Due November One Twenty Thirty Five [Member] [Member]
Debt Instrument [Line Items]
Debt instrument, stated interest rate	1.50%		1.50%			1.50%
Debt Instrument, Interest Rate, Effective Percentage	5.394%		5.39%
nuan_DebtInstrumentMaturityYear	2,035
Unamortized Debt Issuance Expense	$ 1.6		$ 1.9
Debt Instrument, Unamortized Discount	$ 44.9
Convertible Debentures One Percent Due Twenty Thirty Five [Member]
Debt Instrument [Line Items]
Debt instrument, stated interest rate	1.00%		1.00%		1.00%
Debt Instrument, Interest Rate, Effective Percentage	5.622%		5.62%
nuan_DebtInstrumentMaturityYear	2,035
Unamortized Debt Issuance Expense	$ 7.2		$ 8.2
Debt Instrument, Unamortized Discount	$ 146.7		$ 163.5
Convertible Debentures 1.25% Due 2025 [Member]
Debt Instrument [Line Items]
Debt instrument, stated interest rate	1.25%
Debt Instrument, Interest Rate, Effective Percentage	5.578%
nuan_DebtInstrumentMaturityYear	2,025
Unamortized Debt Issuance Expense	$ 4.4
Debt Instrument, Unamortized Discount	$ 95.1
Minimum [Member] | Revolving Credit Facility Due April Fifteenth Twenty Twenty One [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.50%
Minimum [Member] | Revolving Credit Facility Due April Fifteenth Twenty Twenty One [Member] | London Interbank Offered Rate [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.50%
Maximum | Revolving Credit Facility Due April Fifteenth Twenty Twenty One [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.75%
Maximum | Revolving Credit Facility Due April Fifteenth Twenty Twenty One [Member] | London Interbank Offered Rate [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.75%

Debt and Credit Facilities Shor

Debt and Credit Facilities Short-term Related Party Note Payable (Details) - USD ($) $ in Thousands	9 Months Ended		50 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017
Related Party Transaction [Line Items]
Stock Repurchased During Period, Value	$ 99,100		$ 806,600
Payments for Repurchase of Common Stock	$ 99,077	$ 699,472

Debt and Credit Facilities 5.62

Debt and Credit Facilities 5.625% Senior Notes due December 2026 (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Jun. 30, 2017	Jun. 30, 2017	Dec. 22, 2016
Debt Instrument [Line Items]
Document Period End Date		Jun. 30, 2017
5.625% Senior Notes due 2026 [Member]
Debt Instrument [Line Items]
Debt instrument, stated interest rate	5.625%	5.625%	5.625%
Proceeds from Issuance of Senior Long-term Debt	$ 495
Change of Control [Member] | 5.625% Senior Notes due 2026 [Member]
Debt Instrument [Line Items]
Aggregate Principal Amount of Senior Notes, Redemption Price, Percentage		101.00%
Before December 15, 2021 [Member] | 5.625% Senior Notes due 2026 [Member]
Debt Instrument [Line Items]
Aggregate Principal Amount of Senior Notes, Redemption Price, Percentage		100.00%
Aggregate Principal Amount of Senior Notes, Redemption of Principal Amount, Percentage		35.00%
Before December 15, 2021 [Member] | 5.625% Senior Notes due 2026 [Member] | Minimum [Member]
Debt Instrument [Line Items]
Aggregate Principal Amount of Senior Notes, Redemption of Principal Amount, Percentage		50.00%
Asset Sale [Member] | 5.625% Senior Notes due 2026 [Member]
Debt Instrument [Line Items]
Aggregate Principal Amount of Senior Notes, Redemption Price, Percentage		100.00%
At any time and from time to time before December 15, 2021 [Member] | 5.625% Senior Notes due 2026 [Member]
Debt Instrument [Line Items]
Aggregate Principal Amount of Senior Notes, Redemption Price, Percentage		105.625%

Debt and Credit Facilities 1.25

Debt and Credit Facilities 1.25% Convertible Debentures due 2025 (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions	9 Months Ended		50 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Mar. 13, 2017	Sep. 30, 2016
Debt Instrument [Line Items]
Document Period End Date	Jun. 30, 2017
Long-term debt, face value	$ 2,918,100		$ 2,918,100		$ 2,687,100
Proceeds from Issuance of Long-term Debt	$ 838,081	$ 959,860
Stock Repurchased and Retired During Period, Shares	5.8		46.5
Stock Repurchased During Period, Value	$ 99,100		$ 806,600
Convertible Debentures 1.25% Due 2025 [Member]
Debt Instrument [Line Items]
Convertible Debt, Noncurrent				$ 252,100
Long-term debt, face value				350,000
Proceeds from Issuance of Long-term Debt	$ 343,600
Debt Instrument, Convertible, Carrying Amount of Equity Component				$ 97,900
Debt Instrument, Convertible, Conversion Price				$ 22.22

Stockholders' Equity (Details)

Stockholders' Equity (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended	50 Months Ended
	Jun. 30, 2017	Sep. 30, 2016	Jun. 30, 2017	Apr. 29, 2015	Apr. 29, 2013
Stockholders Equity Note [Line Items]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased, Value				$ 500	$ 500
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased	$ 193.4		$ 193.4
Stock Repurchased and Retired During Period, Shares	5,800,000		46,500,000
Stock Repurchased During Period, Value	$ 99.1		$ 806.6
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	1,932,286
Other Acquisitions [Member]
Stockholders Equity Note [Line Items]
Stock Issued During Period, Shares, Acquisitions	844,108
Payments to Acquire Businesses, Gross	$ 97.2	$ 50.4

Net Loss Per Share (Additional

Net Loss Per Share (Additional Information) (Detail) - shares shares in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive common equivalent shares excluded from computation of diluted net income (loss) per share	7.5	7.4	7.6	8.4

Stock-Based Compensation (Inclu

Stock-Based Compensation (Included in Consolidated Statements of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock based compensation	$ 42,331	$ 42,447	$ 121,809	$ 122,957
Cost of professional services and hosting
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock based compensation	8,385	8,112	24,875	23,626
Cost of product and licensing
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock based compensation	104	42	298	286
Cost of maintenance and support
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock based compensation	1,130	1,083	3,117	3,074
Research and development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock based compensation	9,610	9,157	26,498	27,056
Selling and marketing
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock based compensation	11,981	13,726	34,968	37,023
General and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock based compensation	$ 11,121	$ 10,327	$ 32,053	$ 31,892

Stock-Based Compensation (Summa

Stock-Based Compensation (Summary of Stock Options Activity) (Detail) - USD ($) $ / shares in Units, $ in Millions	9 Months Ended		50 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017
Share-based Compensation [Abstract]
Closing market value of common stock	$ 17.41		$ 17.41
Stock Repurchased and Retired During Period, Shares	5,800,000		46,500,000
Number of Shares
Outstanding at September 30, 2016	1,965,826
Exercised	(1,932,286)
Expired	(7,595)
Outstanding at June 30, 2017	25,945		25,945
Exercisable	25,936	1,975,656	25,936
Weighted Average Exercise Price
Outstanding at September 30, 2016	$ 15.01
Exercised	14.98
Expired	20.01
Outstanding at June 30, 2017	15.77		$ 15.77
Exercisable	$ 15.78	$ 14.97	$ 15.78
Weighted Average Remaining Contractual Term
Outstanding at June 30, 2017	2 years 9 months
Exercisable	2 years 9 months	1 year
Aggregate Intrinsic Value
Outstanding at June 30, 2017	$ 0.1		$ 0.1
Exercisable	0.1	$ 2.2	0.1
Intrinsic Value Options Exercised	3.6	$ 8.5
Stock Repurchased During Period, Value	$ 99.1		$ 806.6

Stock-Based Compensation (Sum66

Stock-Based Compensation (Summary of Activity Relating to Restricted Units) (Detail) $ / shares in Units, $ in Millions	9 Months Ended
	Jun. 30, 2017USD ($)$ / sharesshares
Restricted Units, Outstanding [Roll Forward]
Closing market value of common stock | $ / shares	$ 17.41
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Purchase price for restricted units, vested | $ / shares	$ 0.001
Number of Shares Underlying Restricted Units — Contingent Awards
Restricted Units, Outstanding [Roll Forward]
Outstanding at September 30, 2016 | shares	5,089,619
Weighted average remaining recognition period of outstanding restricted units	1 year 5 months
Unearned stock-based compensation expense of outstanding restricted units	$ 56.5
Aggregate intrinsic value of outstanding restricted units(a)	$ 88.6
Number of Shares Underlying Restricted Units — Time-Based Awards
Restricted Units, Outstanding [Roll Forward]
Outstanding at September 30, 2016 | shares	6,220,797
Weighted average remaining recognition period of outstanding restricted units	1 year 8 months
Unearned stock-based compensation expense of outstanding restricted units	$ 68.1
Aggregate intrinsic value of outstanding restricted units(a)	$ 108.4

Stock-Based Compensation (Sum67

Stock-Based Compensation (Summary of Weighted-Average Grant-Date Fair Value and Intrinsic Value of Restricted Units Vested) (Detail) - USD ($) $ / shares in Units, $ in Millions	9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant-date fair value per share	$ 16.10	$ 19.20
Total intrinsic value of shares vested (in millions)	$ 119.2	$ 150.7
Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total intrinsic value of shares vested (in millions)		$ 4.3

Stock-Based Compensation Stock-

Stock-Based Compensation Stock-Based Compensation (Restricted Stock Awards) (Details) - USD ($) $ / shares in Units, $ in Millions	9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Sep. 30, 2016
Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at September 30, 2016	0
Outstanding at June 30, 2017	250,000
Weighted Average Grant Date Fair Value, Outstanding	$ 15.55		$ 0
Total Intrinsic Value of shares vested		$ 4.3
Weighted average remaining recognition period of outstanding restricted units	3 months
Unearned stock-based compensation expense of outstanding restricted units	$ 1.1
Aggregate intrinsic value of outstanding restricted units(a)	$ 4.4
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	250,000
Weighted-average grant-date fair value per share	$ 15.55

Income Taxes Components of Inco

Income Taxes Components of Income (Loss) Before Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Components of Income (Loss) before Income Taxes [Abstract]
Domestic	$ (58,871)	$ (39,615)	$ (148,257)	$ (102,308)
Foreign	33,644	35,640	84,788	96,234
Loss before income taxes	$ (25,227)	$ (3,975)	$ (63,469)	$ (6,074)

Income Taxes (Components of Ben

Income Taxes (Components of Benefit from Income Taxes) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Tax Disclosure [Abstract]
Domestic	$ (3,029)	$ 3,411	$ 5,952	$ 12,970
Foreign	5,638	4,435	16,151	11,888
Provision for income taxes	$ 2,609	$ 7,846	$ 22,103	$ 24,858
Effective tax rate	(10.30%)	(197.40%)	(34.80%)	(409.30%)

Income Taxes (Additional Inform

Income Taxes (Additional Information) (Detail) - USD ($)	9 Months Ended
	Jun. 30, 2017	Sep. 30, 2016
Business Acquisition [Line Items]
Unrecognized Tax Benefits	$ 29,200,000	$ 27,300,000
U.S. federal statutory income tax rate	35.00%
Unrecognized Tax Benefits Expected To Be Resolved With In A Year	$ 0

Commitments and Contingencies (

Commitments and Contingencies (Details)	9 Months Ended
	Jun. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Indemnification term for former officers and directors	6 years

Segment and Geographic Inform73

Segment and Geographic Information and Significant Customers (Additional Information) (Detail)	9 Months Ended
	Jun. 30, 2017Segment
Segment Reporting [Abstract]
Number of reportable business segments	4

Segment and Geographic Inform74

Segment and Geographic Information and Significant Customers (Segment Results Along with Reconciliation of Segment Profit to Income Before Income Taxes) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Segment Reporting Information [Line Items]
Segment Revenues	$ 495,624	$ 484,861	$ 1,502,740	$ 1,467,144
Revenues	486,221	477,851	1,473,452	1,442,699
Segment profit	163,247	160,774	508,867	497,046
Corporate expenses and other, net	(31,683)	(30,888)	(92,829)	(97,489)
Acquisition-related revenues and cost of revenues adjustments	(9,403)	(6,460)	(29,288)	(23,520)
Stock-based compensation	(42,331)	(42,447)	(121,809)	(122,957)
Amortization of intangible assets	(44,887)	(41,855)	(133,418)	(127,306)
Acquisition-related costs, net	(7,646)	(4,721)	(22,051)	(8,426)
Restructuring and other charges, net	(13,035)	(5,717)	(39,649)	(20,257)
Costs associated with IP collaboration agreements	0	0	0	(4,000)
Other expense, net	(39,489)	(32,661)	(133,292)	(99,165)
Loss before income taxes	(25,227)	(3,975)	(63,469)	(6,074)
Healthcare
Segment Reporting Information [Line Items]
Segment Revenues	232,641	240,986	710,315	733,461
Segment profit	70,457	78,129	232,353	237,740
Restructuring and other charges, net	(5,058)	(1,393)	(8,489)	(2,715)
Mobile
Segment Reporting Information [Line Items]
Segment Revenues	101,515	91,778	293,525	280,017
Segment profit	41,428	30,983	115,336	98,196
Restructuring and other charges, net	(355)	(1,284)	(14,446)	(6,191)
Enterprise
Segment Reporting Information [Line Items]
Segment Revenues	112,064	95,249	344,359	278,467
Segment profit	34,419	31,065	108,149	91,336
Restructuring and other charges, net	(3,950)	(486)	(5,626)	(3,563)
Imaging
Segment Reporting Information [Line Items]
Segment Revenues	49,404	56,848	154,541	175,199
Segment profit	16,943	20,597	53,029	69,774
Restructuring and other charges, net	(43)	(301)	(1,016)	(697)
Less: acquisition-related revenues adjustments
Segment Reporting Information [Line Items]
Revenues	$ 9,403	$ 7,010	$ 29,288	$ 24,445

Segment and Geographic Inform75

Segment and Geographic Information and Significant Customers (Classification of Revenue by Major Geographic Areas) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Segment Revenues	$ 495,624	$ 484,861	$ 1,502,740	$ 1,467,144
Total revenues	486,221	477,851	1,473,452	1,442,699
UNITED STATES
Revenues from External Customers and Long-Lived Assets [Line Items]
Segment Revenues	341,826	341,252	1,043,933	1,035,776
International [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Segment Revenues	$ 144,395	$ 136,599	$ 429,519	$ 406,923