10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

 _____________________________________________

Form 10-Q

 _____________________________________________

(Mark One)

ý QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2018

Or

¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Commission file number 000-27038

 _____________________________________________

NUANCE COMMUNICATIONS, INC.

(Exact name of registrant as specified in its charter)

 _____________________________________________

Delaware	94-3156479
(State or Other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
1 Wayside Road Burlington, Massachusetts	01803
(Address of principal executive offices)	(Zip Code)

Registrant’s telephone number, including area code:

(781) 565-5000

 _____________________________________________

Indicate by check mark whether the Registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  ý    No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  ý    No  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and "emerging growth company" in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer	ý	Accelerated filer	¨	Emerging growth company	¨
Non-accelerated filer	¨	(Do not check if a smaller reporting company)		Smaller reporting company	¨

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.      ¨

Indicate by check mark whether the Registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes  ¨    No  ý

The number of shares of the Registrant’s Common Stock, outstanding as of May 3, 2018 was 295,432,178.

NUANCE COMMUNICATIONS, INC.

TABLE OF CONTENTS

		Page
PART I: FINANCIAL INFORMATION
Item 1.	Condensed Consolidated Financial Statements (unaudited):
	Consolidated Statements of Operations for the three and six months ended March 31, 2018 and 2017	1
	Consolidated Statements of Comprehensive Loss for the three and six months ended March 31, 2018 and 2017	2
	Consolidated Balance Sheets at March 31, 2018 and September 30, 2017	3
	Consolidated Statements of Cash Flows for the six months ended March 31, 2018 and 2017	4
	Notes to Condensed Consolidated Financial Statements	5
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	24
Item 3.	Quantitative and Qualitative Disclosures about Market Risk	39
Item 4.	Controls and Procedures	40
PART II: OTHER INFORMATION
Item 1.	Legal Proceedings	40
Item 1A.	Risk Factors	40
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	50
Item 3.	Defaults Upon Senior Securities	50
Item 4.	Mine Safety Disclosures	50
Item 5.	Other Information	50
Item 6.	Exhibits	51
Exhibit Index		51
Signatures		52
Certifications

NUANCE COMMUNICATIONS, INC.

CONSOLIDATED STATEMENTS OF OPERATIONS

	Three Months Ended March 31,						Six Months Ended March 31,
	2018			2017			2018			2017
	(Unaudited) (In thousands, except per share amounts)
Revenues:
Professional services and hosting	$	274,574		$	258,690		$	533,601		$	512,107
Product and licensing	161,284			159,258			323,094			311,010
Maintenance and support	78,366			81,625			159,174			164,114
Total revenues	514,224			499,573			1,015,869			987,231
Cost of revenues:
Professional services and hosting	181,051			164,170			353,579			329,062
Product and licensing	18,966			18,790			38,035			37,168
Maintenance and support	14,191			13,240			28,432			26,838
Amortization of intangible assets	14,780			17,218			30,136			32,760
Total cost of revenues	228,988			213,418			450,182			425,828
Gross profit	285,236			286,155			565,687			561,403
Operating expenses:
Research and development	74,185			66,232			147,551			132,554
Sales and marketing	94,187			93,674			196,147			195,190
General and administrative	74,288			41,518			127,180			81,308
Amortization of intangible assets	22,670			27,912			45,734			55,771
Acquisition-related costs, net	2,360			5,379			7,921			14,405
Restructuring and other charges, net	8,948			19,911			23,749			26,614
Impairment of goodwill	137,907			—			137,907			—
Total operating expenses	414,545			254,626			686,189			505,842
(Loss) income from operations	(129,309		)	31,529			(120,502		)	55,561
Other (expense) income:
Interest income	2,236			1,280			4,428			2,303
Interest expense	(33,866		)	(37,853		)	(69,936		)	(75,874		)
Other expense, net	(570		)	(19,623		)	(792		)	(20,232		)
Loss before income taxes	(161,509		)	(24,667		)	(186,802		)	(38,242		)
Provision (benefit) for income taxes	2,544			9,141			(75,977		)	19,494
Net loss	$	(164,053	)	$	(33,808	)	$	(110,825	)	$	(57,736	)
Net loss per share:
Basic	$	(0.56	)	$	(0.12	)	$	(0.38	)	$	(0.20	)
Diluted	$	(0.56	)	$	(0.12	)	$	(0.38	)	$	(0.20	)
Weighted average common shares outstanding:
Basic	294,103			291,021			292,720			289,976
Diluted	294,103			291,021			292,720			289,976

See accompanying notes.

1

NUANCE COMMUNICATIONS, INC.

CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS

	Three Months Ended March 31,						Six Months Ended March 31,
	2018			2017			2018			2017
	(Unaudited)
	(In thousands)
Net loss	$	(164,053	)	$	(33,808	)	$	(110,825	)	$	(57,736	)
Other comprehensive income (loss):
Foreign currency translation adjustment	4,096			17,947			5,611			(12,619		)
Pension adjustments	—			118			116			236
Unrealized (loss) gain on marketable securities	(71		)	27			(348		)	(4		)
Total other comprehensive income (loss), net	4,025			18,092			5,379			(12,387		)
Comprehensive loss	$	(160,028	)	$	(15,716	)	$	(105,446	)	$	(70,123	)

See accompanying notes.

2

NUANCE COMMUNICATIONS, INC.

CONSOLIDATED BALANCE SHEETS

	March 31, 2018			September 30, 2017
	(Unaudited)
	(In thousands, except per share amounts)
ASSETS
Current assets:
Cash and cash equivalents	$	468,642		$	592,299
Marketable securities	153,008			251,981
Accounts receivable, less allowances for doubtful accounts of $12,458 and $14,333	411,648			395,392
Prepaid expenses and other current assets	107,929			88,269
Total current assets	1,141,227			1,327,941
Marketable securities	27,087			29,844
Land, building and equipment, net	172,521			176,548
Goodwill	3,472,849			3,590,608
Intangible assets, net	596,060			664,474
Other assets	147,016			142,508
Total assets	$	5,556,760		$	5,931,923
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Current portion of long-term debt	$	—		$	376,121
Contingent and deferred acquisition payments (including $1.5 million due to a related party as of March 31, 2018, as more fully described in Note 16)	20,926			28,860
Accounts payable	92,767			94,604
Accrued expenses and other current liabilities	214,680			245,901
Deferred revenue	413,126			366,042
Total current liabilities	741,499			1,111,528
Long-term debt	2,311,484			2,241,283
Deferred revenue, net of current portion	469,575			423,929
Deferred tax liabilities	42,344			131,320
Other liabilities	98,176			92,481
Total liabilities	3,663,078			4,000,541
Commitments and contingencies (Note 15)
Stockholders’ equity:
Common stock, $0.001 par value per share; 560,000 shares authorized; 298,330 and 293,938 shares issued and 294,580 and 290,187 shares outstanding, respectively	298			294
Additional paid-in capital	2,697,869			2,629,245
Treasury stock, at cost (3,751 shares)	(16,788		)	(16,788		)
Accumulated other comprehensive loss	(95,963		)	(101,342		)
Accumulated deficit	(691,734		)	(580,027		)
Total stockholders’ equity	1,893,682			1,931,382
Total liabilities and stockholders’ equity	$	5,556,760		$	5,931,923

See accompanying notes.

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NUANCE COMMUNICATIONS, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS

	Six Months Ended March 31,
	2018			2017
	(Unaudited) (In thousands)
Cash flows from operating activities:
Net loss	$	(110,825	)	$	(57,736	)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	107,055			116,644
Stock-based compensation	71,735			79,478
Non-cash interest expense	25,195			26,771
Deferred tax (benefit) provision	(90,331		)	5,643
Loss on extinguishment of debt	—			18,565
Impairment of goodwill	137,907			—
Impairment of fixed asset	1,780			10,944
Other	579			2,342
Changes in operating assets and liabilities, excluding effects of acquisitions:
Accounts receivable	(12,415		)	(1,431		)
Prepaid expenses and other assets	(22,059		)	(12,295		)
Accounts payable	(3,773		)	(1,000		)
Accrued expenses and other liabilities	5,230			(10,579		)
Deferred revenue	85,287			72,988
Net cash provided by operating activities	195,365			250,334
Cash flows from investing activities:
Capital expenditures	(25,326		)	(18,787		)
Payments for business and asset acquisitions, net of cash acquired (including cash payments of $3.5 million to a related party for fiscal 2018, see Note 16)	(12,768		)	(72,990		)
Purchases of marketable securities and other investments	(92,994		)	(153,851		)
Proceeds from sales and maturities of marketable securities and other investments	195,273			69,658
Net cash provided by (used in) investing activities	64,185			(175,970		)
Cash flows from financing activities:
Repayment and redemption of debt	(331,172		)	(634,055		)
Proceeds from issuance of long-term debt, net of issuance costs	—			838,959
Payments for repurchase of common stock	—			(99,077		)
Acquisition payments with extended payment terms	(16,927		)	—
Proceeds from issuance of common stock from employee stock plans	9,360			8,598
Payments for taxes related to net share settlement of equity awards	(44,006		)	(43,353		)
Other financing activities	(647		)	(206		)
Net cash (used in) provided by financing activities	(383,392		)	70,866
Effects of exchange rate changes on cash and cash equivalents	185			(1,210		)
Net (decrease) increase in cash and cash equivalents	(123,657		)	144,020
Cash and cash equivalents at beginning of period	592,299			481,620
Cash and cash equivalents at end of period	$	468,642		$	625,640

See accompanying notes.

4

NUANCE COMMUNICATIONS, INC.

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

1. Organization and Presentation

The condensed consolidated financial statements include the accounts of Nuance Communications, Inc. (“Nuance”, “we”, "our", or “the Company”) and our wholly-owned subsidiaries. We prepared the unaudited interim condensed 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 normal and recurring adjustments that, in our opinion, are necessary to present fairly our financial position, results of operations and cash flows for the periods presented. 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, disclosure of contingent assets and liabilities, and the reported amounts of revenues and expenses during the reporting period.

Although we believe the disclosures included herein are adequate to ensure that the condensed consolidated financial statements are fairly presented, certain information and footnote disclosures to the financial statements have been condensed or omitted in accordance with the rules and regulations of the SEC. Accordingly, the condensed consolidated financial statements and the footnotes included herein should be read in conjunction with the audited financial statements and the footnotes included in our Annual Report on Form 10-K for the fiscal year ended September 30, 2017. The results of operations for the interim periods presented are not necessarily indicative of the results for the entire fiscal year or any future period.

2. Summary of Significant Accounting Policies

Recently Adopted Accounting Standards

In October 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2016-16, "Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory" ("ASU 2016-16"), which requires income tax consequences of inter-company transfers of assets other than inventory to be recognized when the transfer occurs. ASU 2016-16 is effective for fiscal years beginning after December 15, 2017, with early adoption permitted. We early adopted the guidance during the first quarter of fiscal year 2018. As a result, deferred tax liabilities of $0.9 million arising from inter-company transfers in prior years were recognized and recorded against the beginning balance of accumulated deficit in the first quarter of fiscal year 2018. The adoption of the guidance did not have a material impact on our consolidated financial statements for any period presented.

Recently Issued Accounting Standards

In January 2018, the FASB issued ASU 2018-02, "Income Statement — Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income ("AOCI"), which is effective for fiscal years beginning after December 15, 2018 and interim periods therein, with early adoption permitted. The guidance gives entities the option to reclassify to retained earnings the tax effects resulting from the Tax Cuts and Jobs Act ("TCJA") related to items in AOCI. The new guidance may be applied retrospectively to each period in which the effect of the Act is recognized in the period of adoption. We do not expect the implementation to have a material impact on our consolidated financial statements.

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 is effective for fiscal years beginning after December 15, 2017 and the interim periods therein, with early adoption permitted. The guidance requires cash flows with multiple characteristics to be classified using a three-step process, including (i) determining whether explicit guidance is applicable, (ii) separating each identifiable source or use of cash flows, and (iii) determining the predominant source or use of cash flows when the source or use of cash flows cannot be separately identifiable. The guidance will be applied retrospectively to each period presented. We do not expect the implementation to have a material impact on our consolidated financial statements.

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.

5

NUANCE COMMUNICATIONS, INC.

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

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. While we are continuing to assess all potential impacts of the new standard, we currently believe the most significant impact relates to our accounting for arrangements that include term-based software licenses bundled with maintenance and support. Under current GAAP, the revenue attributable to these software licenses is recognized ratably over the term of the arrangement because vendor-specific objective evidence ("VSOE") does not exist for the undelivered maintenance and support element as it is not sold separately. The requirement to have VSOE for undelivered elements to enable the separation of revenue for the delivered software licenses is eliminated under the new standard. Accordingly, under the new standard we will be required to recognize as revenue a portion of the arrangement fee upon delivery of the software license. While we currently expect revenue related to our professional services and cloud offerings to remain substantially unchanged, we are still in the process of evaluating the impact of the new standard on these arrangements. We plan to adopt this guidance beginning on October 1, 2018 and apply the cumulative catch-up transition method, with a cumulative adjustment to retained earnings as opposed to retrospectively adjusting prior periods.

3. Business Acquisitions

We continue to expand our solutions and integrate our technologies in new offerings through acquisitions. A summary of our acquisition activities is as follows:

Fiscal Year 2018

For the six months endedMarch 31, 2018, we completed an acquisition in our Healthcare segment for a total cash consideration of $8.7 million and contingent payments with a fair value of $0.5 million. As a result, we recognized goodwill of $6.8 million, and other intangible assets of $2.0 million, with a weighted average life of 2.0 years. The acquisition did not have a material impact on our condensed consolidated financial statements for the period.

In April 2018, we completed an acquisition in our Automotive segment for a total cash consideration of approximately $82 million, net of cash acquired. We are currently in the process of determining the total consideration transferred and the fair values of assets acquired and liabilities assumed, but do not expect this acquisition to have a material impact on our condensed consolidated financial statements.

Fiscal Year 2017

For the six months endedMarch 31, 2017, we completed several acquisitions in our Enterprise, Healthcare and Mobile segments for a total cash consideration of $34.4 million, 0.8 million shares of common stock valued at $13.4 million and contingent payments with a fair value of $2.0 million. As a result, we recognized goodwill of $27.0 million, and other intangible assets of $22.5 million, with a weighted average life of 6.2 years. Such acquisitions were not significant individually or in the aggregate.

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NUANCE COMMUNICATIONS, INC.

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Acquisition-Related Costs, net

Acquisition-related costs include costs related to business acquisitions. These costs consist of (i) transition and integration costs, including retention payments, transitional employee costs and earn-out payments, and other costs related to integration activities; (ii) professional service fees, 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) fair value adjustments to acquisition-related contingencies.

A summary of acquisition-related costs, net is as follows (dollars in thousands):

	Three Months Ended March 31,						Six Months Ended March 31,
	2018			2017			2018			2017
Transition and integration costs	$	3,367		$	3,612		$	7,429		$	7,322
Professional service fees	940			2,974			1,451			7,991
Acquisition-related adjustments	(1,947		)	(1,207		)	(959		)	(908		)
Total	$	2,360		$	5,379		$	7,921		$	14,405

4. Goodwill and Intangible Assets

The changes in the carrying amount of goodwill by reportable segment for the six months endedMarch 31, 2018 are as follows (dollars in thousands):

Goodwill

	Healthcare			Enterprise		Imaging		Mobile			Automotive		Other			Total
Balance as of September 30, 2017	$	1,418,334		$	673,472	$	257,792	$	1,241,010		$	—	$	—		$	3,590,608
Acquisitions	6,775			—		—		—			—		—			6,775
Purchase accounting adjustments	(336		)	—		—		2,697			—		—			2,361
Effect of foreign currency translation	1,725			3,536		407		5,344			—		—			11,012
Reorganization (Note 17)	—			11,991		—		(1,249,051		)	1,080,453		156,607			—
Impairment charge (a)	—			—		—		—			—		(137,907		)	(137,907		)
Balance as of March 31, 2018	$	1,426,498		$	688,999	$	258,199	$	—		$	1,080,453	$	18,700		$	3,472,849

^(a)Represents accumulated impairment charge as of March 31, 2018.

Other Intangible Assets

The changes in the carrying amount of intangible assets for the six months endedMarch 31, 2018 are as follows (dollars in thousands):

	Intangible Assets
Balance at September 30, 2017	$	664,474
Acquisitions	2,620
Acquisition from a related party (Note 16)	5,000
Amortization	(75,870		)
Effect of foreign currency translation	(164		)
Balance at March 31, 2018	$	596,060

Interim Impairment Analysis

As more fully described in Note 17, effective the second quarter of fiscal year 2018, our Automotive business, which was previously included within our Mobile segment, became a standalone operating segment. In addition, we moved our Dragon TV business from our Mobile operating segment into our Enterprise operating segment.

As a result of the reorganization, the original Mobile reporting unit was separated into three discrete lines of business comprised of Automotive, Dragon TV, and Devices. We assigned $1,080.5 million, $12.0 million, and $36.0 million of goodwill to Automotive, Dragon TV and Devices, respectively, based on their relative fair values as of March 31, 2018, and assessed the assigned goodwill

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NUANCE COMMUNICATIONS, INC.

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

for impairment by comparing each component’s fair value to its carrying amount. The fair values of Automotive and Dragon TV significantly exceeded their carrying amounts. However, the carrying value of Devices exceeded its fair value by $35.1 million. The standalone multi-year operating plan reflects the ongoing consolidation of our handset manufacturer customer base and continued erosion of our penetration of the remaining market. As a result, we recorded a $35.1 million goodwill impairment for the second quarter of fiscal 2018. After the impairment charge, the goodwill assigned to Devices as of March 31, 2018 was immaterial. The reorganization did not result in any impairment charge of other intangible assets for the second quarter of fiscal 2018.

Also during the second quarter of fiscal 2018, our Subscriber Revenue Services ("SRS") reporting unit, originally included within our Mobile operating segment, recorded significantly lower revenue and profitability due to recent market disruptions in certain markets that we serve. Our SRS business provides value-added services to mobile operators in emerging markets, primarily in India and Brazil. These markets have experienced recent and dramatic disruption as a result of accelerated change in competition and business models for our mobile operator customers. Specifically, the rapid shift away from a model where voice, data and text are offered separately toward unlimited bundled services at considerably lower costs has significantly reduced mobile operators’ demand for our services. This reduced demand materially impacts our future expectations for SRS revenues. As a result, executive management performed an updated strategic assessment and reduced the long-term growth rates and profitability contemplated in SRS's multi-year operating plan. We concluded that these financial results coupled with the rapid market shifts being experienced in the industry were factors that represented impairment indicators, triggering a review of goodwill and indefinite-lived intangible assets for impairment during the second quarter of fiscal 2018. Based on the result of the impairment assessment, the carrying value of SRS exceeded its fair value by $94.3 million. In addition, we recorded an $8.5 million deferred tax benefit related to SRS’s goodwill, which is amortized over time for tax purposes, and therefore increased the impairment charge by the same amount. As a result, we recorded a goodwill impairment charge of $102.8 million related to SRS for the second quarter of fiscal 2018. After the impairment charge, goodwill assigned to SRS was $17.8 million as of March 31, 2018. The assessment did not result in any impairment charge of other intangible assets for the second quarter of fiscal 2018.

For the purpose of the goodwill impairment analysis, the carrying value of each reporting unit is determined based on the allocation of assets and liabilities to the reporting unit based on the reporting unit’s revenue and operating expenses as a percentage of our consolidated revenue and operating expenses. Certain corporate assets and liabilities that are not directly attributable to the reporting unit’s operations and would not be transferred to a hypothetical purchaser of the reporting unit are excluded from the reporting unit’s carrying amount.

The fair value of a reporting unit is generally determined using a combination of the income approach and the market approach, where the income approach is weighted 50% and the market approach 50%. The fair values of Devices and Dragon TV, however, were determined solely based upon the income approach due to the lack of comparable public companies or comparable acquisitions. For the income approach, fair value is determined based on the present value of estimated future after-tax cash flows, discounted at an appropriate risk-adjusted rate. We use our internal forecasts to estimate future after-tax cash flows and estimate the long-term growth rates based on our most recent views of the long-term outlook for each reporting unit. Actual results may differ from those assumed in our forecasts. We derive our discount rates using a capital asset pricing model and analyzing published rates for industries relevant to our reporting units to estimate the weighted average cost of capital. We use discount rates that are commensurate with the risks and uncertainty inherent in the respective businesses and in our internally developed forecasts. For the market approach, we use a valuation technique in which values are derived based on valuation multiples of comparable publicly traded companies. We assess each valuation methodology based upon the relevance and availability of the data at the time we perform the valuation and weight the methodologies appropriately.

Determining the fair value of a reporting unit involves the use of significant estimates and assumptions, all of which we believe are reasonable but nevertheless inherently uncertain. These estimates and assumptions include revenue growth rates and operating margins used to estimate future cash flows, risk-adjusted discount rates, future economic and market conditions, and the use of market comparables. Additionally, if we continue to experience lower-than-expected growth in a reporting unit or fail to sustain our profitability due to changing market dynamics, competition or technological obsolescence, it could adversely impact the long-term assumptions used in our goodwill impairment analysis. Such changes in assumptions and estimates may result in additional impairment of our goodwill and/or other long-lived assets, which could materially impact our future results of operations and financial conditions. Finally, as we continue to identify and assess other initiatives to better align our segment reporting structure with our long-term strategies, any additional changes in our organizational and segment reporting structure may result in additional impairment charges of goodwill and other intangible assets.

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5. Financial Instruments and Hedging Activities

Derivatives Not Designated as Hedges

Forward Currency Contracts

We utilize foreign currency forward contracts to mitigate the risks associated with changes in foreign currency exchange rates. Generally, we enter into such contracts for less than 90 days and have no cash requirements until maturity. At March 31, 2018 and September 30, 2017, we had outstanding contracts with a total notional value of $78.0 million and $69.0 million, respectively.

We did not designate any forward contracts as hedging instruments for the six months endedMarch 31, 2018 or 2017. Therefore, changes in fair value of foreign currency forward contracts were recognized within other expense, net in our condensed consolidated statements of operations. The cash flows related to the settlement of forward contracts not designated as hedging instruments are included in cash flows from investing activities within our condensed consolidated statement of cash flows.

A summary of the derivative instruments as of March 31, 2018 and September 30, 2017 is as follows (dollars in thousands):

Derivatives Not Designated as Hedges	Balance Sheet Classification	Fair Value
		March 31, 2018			September 30, 2017
Foreign currency forward contracts	Prepaid expenses and other current assets	$	325		$	220
Foreign currency forward contracts	Accrued expenses and other current liabilities	(374		)	(373		)

A summary of loss related to the derivative instruments for the six months endedMarch 31, 2018 and 2017 is as follows (dollars in thousands):

	Income Statement Classification	Three Months Ended March 31,					Six Months Ended March 31,
Derivatives Not Designated as Hedges	Income (loss) recognized	2018			2017		2018			2017
Foreign currency forward contracts	Other expense, net	$	(785	)	$	3,555	$	(1,182	)	$	(8,060	)

6. Fair Value Measurements

Fair value is defined as the price that would be received to sell 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 determination of the applicable level within the hierarchy of a particular financial asset or liability depends on the lowest level of inputs that are significant to the fair value measurement as of the measurement date as follows:

• Level 1: Quoted prices for identical assets or liabilities in active markets.

• Level 2: Observable inputs other than those described as Level 1.

• Level 3: Unobservable inputs that are supportable by little or no market activities and are based on significant assumptions and estimates.

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Assets and liabilities measured at fair value on a recurring basis at March 31, 2018 and September 30, 2017 consisted of the following (dollars in thousands):

	March 31, 2018
	Level 1		Level 2			Level 3			Total
Assets:
Money market funds(a)	$	342,877	$	—		$	—		$	342,877
Time deposits(b)	—		97,421			—			97,421
Commercial paper, $42,987 at cost(b)	—		43,084			—			43,084
Corporate notes and bonds, $79,574 at cost(b)	—		79,116			—			79,116
Foreign currency exchange contracts(b)	—		325			—			325
Total assets at fair value	$	342,877	$	219,946		$	—		$	562,823
Liabilities:
Foreign currency exchange contracts(b)	$	—	$	(374	)	$	—		$	(374	)
Contingent acquisition payments(c)	—		—			(11,752		)	(11,752		)
Total liabilities at fair value	$	—	$	(374	)	$	(11,752	)	$	(12,126	)

	September 30, 2017
	Level 1		Level 2			Level 3			Total
Assets:
Money market funds(a)	$	381,899	$	—		$	—		$	381,899
Time deposits(b)	—		85,570			—			85,570
Commercial paper, $41,805 at cost(b)	—		41,968			—			41,968
Corporate notes and bonds, $74,150 at cost(b)	—		74,067			—			74,067
Foreign currency exchange contracts(b)	—		220			—			220
Total assets at fair value	$	381,899	$	201,825		$	—		$	583,724
Liabilities:
Foreign currency exchange contracts(b)	$	—	$	(373	)	$	—		$	(373	)
Contingent acquisition payments(c)	—		—			(8,648		)	(8,648		)
Total liabilities at fair value	$	—	$	(373	)	$	(8,648	)	$	(9,021	)

^(a)  Money market funds and time deposits with original maturity of 90 days or less are included within cash and cash equivalents in the consolidated balance sheets and are valued at quoted market prices in active markets.

^(b)  Time deposits, commercial paper, corporate notes and bonds, and foreign currency exchange contracts are recorded at fair market values, which are determined 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. Commercial paper and corporate notes and bonds generally mature within three years and had a weighted average maturity of 0.68 years as of March 31, 2018 and 0.72 years as of September 30, 2017.

^(c)  The fair values of our contingent consideration arrangements were determined using either the option pricing model with Monte Carlo simulation or the probability-weighted discounted cash flow method.

As of September 30, 2017, $80.2 million of debt securities included within marketable securities were designated as held-to-maturity investments, which had a weighted average maturity of 0.27 years and an estimated fair value of $80.4 million based on Level 2 measurements. No debt securities were designated as held-to-maturity investments as of March 31, 2018.

The estimated fair value of our long-term debt approximated $2,558.6 million (face value $2,587.0 million) and $2,930.9 million (face value $2,918.1 million) as of March 31, 2018 and September 30, 2017, respectively, based on Level 2 measurements. The fair value of each borrowing was estimated using the averages of the bid and ask trading quotes at each respective reporting date. There was no balance outstanding under our revolving credit agreement as of March 31, 2018 or September 30, 2017.

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Additionally, contingent acquisition payments are recorded at fair values upon the acquisition, and remeasured in subsequent reporting periods with the changes in fair values recorded within acquisition-related costs, net. Such payments are contingent upon the achievement of specified performance targets and are valued using the option pricing model with Monte Carlo simulation or the probability-weighted discounted cash flow model.

The following table provides a summary of changes in the aggregate fair value of the contingent acquisition payments for all periods presented (dollars in thousands):

	Three Months Ended March 31,						Six Months Ended March 31,
	2018			2017			2018			2017
Balance at beginning of period	$	10,431		$	8,961		$	8,648		$	8,240
Earn-out liabilities established at time of acquisition	—			1,600			500			3,253
Payments and foreign currency translation	(79		)	(2,759		)	(96		)	(4,257		)
Adjustments to fair value included in acquisition-related costs, net	1,400			(1,425		)	2,700			(859		)
Balance at end of period	$	11,752		$	6,377		$	11,752		$	6,377

Contingent acquisition payments are to be made in periods through fiscal year 2019. As of March 31, 2018, the maximum amount payable based on the agreements was $19.6 million if the specified performance targets are achieved.

7. Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following (dollars in thousands):

	March 31, 2018		September 30, 2017
Compensation	$	119,683	$	159,951
Cost of revenue related liabilities	26,036		20,124
Consulting and professional fees	24,741		12,649
Accrued interest payable	22,318		26,285
Facility-related liabilities	5,006		7,158
Sales and marketing incentives	4,508		3,655
Sales and other taxes payable	1,537		3,125
Other	10,851		12,954
Total	$	214,680	$	245,901

8. 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 setup 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):

	March 31, 2018		September 30, 2017
Current liabilities:
Deferred maintenance revenue	$	170,849	$	162,958
Unearned revenue	242,277		203,084
Total current deferred revenue	$	413,126	$	366,042
Long-term liabilities:
Deferred maintenance revenue	$	62,744	$	60,298
Unearned revenue	406,831		363,631
Total long-term deferred revenue	$	469,575	$	423,929

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9. 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, or arise outside of the ordinary course of our business.

The following table sets forth accrual activity relating to restructuring reserves for the six months endedMarch 31, 2018 (dollars in thousands):

	Personnel			Facilities			Total
Balance at September 30, 2017	$	1,546		$	9,159		$	10,705
Restructuring charges, net	8,670			3,012			11,682
Non-cash adjustment	—			(754		)	(754		)
Cash payments	(8,862		)	(2,897		)	(11,759		)
Balance at March 31, 2018	$	1,354		$	8,520		$	9,874

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 March 31,
	2018											2017
	Personnel		Facilities			Total Restructuring		Other Charges		Total		Personnel		Facilities		Total Restructuring		Other Charges		Total
Healthcare	$	788	$	—		$	788	$	—	$	788	$	577	$	593	$	1,170	$	—	$	1,170
Enterprise	265		7			272		—		272		388		257		645		—		645
Automotive	849		—			849		—		849		1,247		—		1,247		—		1,247
Imaging	83		(16		)	67		—		67		225		36		261		—		261
Other	1,095		558			1,653		—		1,653		1,806		51		1,857		10,773		12,630
Corporate	707		798			1,505		3,814		5,319		332		1,318		1,650		2,308		3,958
Total	$	3,787	$	1,347		$	5,134	$	3,814	$	8,948	$	4,575	$	2,255	$	6,830	$	13,081	$	19,911

	Six Months Ended March 31,
	2018											2017
	Personnel		Facilities			Total Restructuring		Other Charges		Total		Personnel		Facilities		Total Restructuring		Other Charges		Total
Healthcare	$	3,301	$	25		$	3,326	$	—	$	3,326	$	2,561	$	870	$	3,431	$	—	$	3,431
Enterprise	527		2,367			2,894		—		2,894		812		864		1,676		—		1,676
Automotive	1,000		—			1,000		—		1,000		1,415		—		1,415		—		1,415
Imaging	1,306		(7		)	1,299		—		1,299		586		387		973		—		973
Other	1,344		569			1,913		—		1,913		1,850		51		1,901		10,773		12,674
Corporate	1,192		58			1,250		12,067		13,317		1,000		1,982		2,982		3,463		6,445
Total	$	8,670	$	3,012		$	11,682	$	12,067	$	23,749	$	8,224	$	4,154	$	12,378	$	14,236	$	26,614

FiscalYear2018

For the six months endedMarch 31, 2018, we recorded restructuring charges of $11.7 million, which included $8.7 million related to the termination of approximately 400 employees and $3.0 million related to certain excess facilities. Of these amounts, $5.1 million was recorded for the three months ended March 31, 2018, including $3.8 million related to employee termination and $1.3 million related to certain excess facilities. These actions were part of our strategic initiatives focused on investment rationalization, process optimization and cost reduction. We expect the remaining outstanding severance of $1.4 million to be substantially paid during fiscal year 2018, and the remaining balance of $8.5 million related to excess facilities to be paid through fiscal year 2025, in accordance with the terms of the applicable leases.

Additionally, for the six months endedMarch 31, 2018, we recorded $4.6 million related to the transition agreement of our former CEO and $7.5 million related to our remediation and restoration efforts after the malware incident that occurred in the third quarter of fiscal year 2017 (the "2017 Malware Incident"). Of these amounts, $2.3 million related to the CEO transition and $1.5 million related to the 2017 Malware Incident were recorded for the three months ended March 31, 2018. The cash payments associated with the CEO transition agreement are expected to be made through fiscal year 2020.

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FiscalYear2017

For the six months endedMarch 31, 2017, we recorded restructuring charges of $12.4 million, which included $8.2 million related to the termination of approximately 220 employees and $4.2 million related to certain excess facilities. Of these amounts, $6.8 million was recorded for the three months ended March 31, 2017, including $4.6 million related to employee termination and $2.3 million related to certain excess facilities. These actions were part of our strategic initiatives focused on process optimization and cost reduction.

Additionally, for the six months endedMarch 31, 2017, we recorded $3.5 million related to the transition agreement of our former CEO and $10.8 million of non-cash impairment charge related to an internally developed software. Of these amounts, $2.3 million related to the CEO transition and $10.8 million of non-cash impairment charge were recorded for the three months ended March 31, 2017.

10. Debt

At March 31, 2018 and September 30, 2017, we had the following borrowing obligations (dollars in thousands):

	March 31, 2018			September 30, 2017
5.625% Senior Notes due 2026, net of deferred issuance costs of $5.4 million and $5.7 million, respectively. Effective interest rate 5.625%.	$	494,607		$	494,298
5.375% Senior Notes due 2020, net of unamortized premium of $0.8 million and $1.0 million, respectively, and deferred issuance costs of $1.9 million and $2.3 million, respectively. Effective interest rate 5.375%.	448,868			448,630
6.000% Senior Notes due 2024, net of deferred issuance costs of $1.9 million and $2.1 million, respectively. Effective interest rate 6.000%.	298,065			297,910
1.00% Convertible Debentures due 2035, net of unamortized discount of $129.1 million and $140.9 million, respectively, and deferred issuance costs of $6.3 million and $6.9 million, respectively. Effective interest rate 5.622%.	541,164			528,690
2.75% Convertible Debentures due 2031, net of unamortized discount of $1.5 million and deferred issuance costs of $0.1 million as of September 30, 2017. Effective interest rate 7.432%.	46,568			376,121
1.25% Convertible Debentures due 2025, net of unamortized discount of $87.6 million and $92.7 million, respectively, and deferred issuance costs of $4.0 million and $4.3 million, respectively. Effective interest rate 5.578%.	258,387			253,054
1.50% Convertible Debentures due 2035, net of unamortized discount of $37.7 million and $42.5 million, respectively, and deferred issuance costs of $1.3 million and $1.5 million, respectively. Effective interest rate 5.394%.	224,833			219,875
Deferred issuance costs related to our Revolving Credit Facility	(1,008		)	(1,174		)
Total debt	2,311,484			2,617,404
Less: current portion	—			376,121
Total long-term debt	$	2,311,484		$	2,241,283

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The following table summarizes the maturities of our borrowing obligations as of March 31, 2018 (dollars in thousands):

Fiscal Year	Convertible Debentures(1)			Senior Notes			Total
2018	$	—		$	—		$	—
2019	—			—			—
2020	—			450,000			450,000
2021	—			—			—
2022	310,463			—			310,463
Thereafter	1,026,488			800,000			1,826,488
Total before unamortized discount	1,336,951			1,250,000			2,586,951
Less: unamortized discount and issuance costs	(265,999		)	(9,468		)	(275,467		)
Total long-term debt	$	1,070,952		$	1,240,532		$	2,311,484

⁽¹⁾  Pursuant to the terms of each convertible instrument, holders have the right to redeem the debt on specific dates prior to maturity. The repayment schedule above assumes that payment is due on the next redemption date after March 31, 2018.

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.

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.

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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 $18.6 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.

At any time on or after August 15, 2018, we may redeem any or all or a portion of the 2020 Senior Notes at a redemption price equal to 100% of the aggregate principal amount, plus any accrued and unpaid interest to, but excluding, the redemption date.

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.

At any time before July 1, 2019, we may redeem all or a portion of the 2024 Senior Notes at a redemption price equal to100% of the aggregate principal amount of the 2024 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 July 1, 2019, we may redeem all or a portion of the 2024 Senior Notes at certain redemption prices expressed as percentages of the principal amount, plus accrued and unpaid interest to, but excluding, the redemption date.

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 March 31, 2018, 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

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NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

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 remained outstanding as of September 30, 2017, which was included within the total current liabilities.

In November 2017, holders of approximately $331.2 million in aggregate principal amount of the outstanding 2031 Debentures exercised their right to require us to repurchase such debentures. Following the repurchase, $46.6 million in aggregate principal amount of the 2031 Debentures remains outstanding. On or after November 6, 2017, we have the right to call for redemption of some or all of the remaining outstanding 2031 Debentures.

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 used the remaining net proceeds, together with cash on hand to redeem and retire $331.2 million of our 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 March 31, 2018, 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

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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 March 31, 2018, 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

Our revolving credit agreement (the “Revolving Credit Facility”), which expires on April 15, 2021, provides for aggregate borrowing commitments of $242.5 million, including the revolving facility loans, the swingline loans and issuance of letters of credit. As of March 31, 2018, after taking into account the outstanding letters of credit of $4.1 million, we had $238.4 million available for borrowing under the Revolving Credit Facility. The borrowing outstanding under the Revolving Credit Facility bears 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 our assets. The Revolving Credit Facility contains customary affirmative and negative covenants and conditions to borrowing, as well as customary events of default. As of March 31, 2018, we are in compliance with all the debt covenants.

11. Stockholders' Equity

Share Repurchases

On April 29, 2013, our Board of Directors approved a share repurchase program for up to $500.0 million. On April 29, 2015, our Board of Directors approved an additional $500.0 million under our share repurchase program. Under the terms of the share repurchase program, we have the ability to repurchase shares 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.

There were no share repurchases for the six months endedMarch 31, 2018. For the six months endedMarch 31, 2017, we repurchased 5.8 million shares of our common stock for $99.1 million under the program. Since the commencement of the program, we have repurchased an aggregate of 46.5 million shares for $806.6 million. The amount paid in excess of par value is recognized in additional paid in capital. Shares were retired upon repurchase. As of March 31, 2018, approximately $193.4 million remained available for future repurchases under the program.

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NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

12. Net Loss Per Share

The following table sets forth the computation for basic and diluted net loss per share (dollars in thousands, except per share amounts):

	Three Months Ended March 31,						Six Months Ended March 31,
	2018			2017			2018			2017
Numerator:
Net loss	$	(164,053	)	$	(33,808	)	$	(110,825	)	$	(57,736	)
Denominator:
Weighted average common shares outstanding — Basic	294,103			291,021			292,720			289,976
Dilutive effect of employee stock compensation plans (a)	—			—			—			—
Weighted average common shares outstanding — Diluted	294,103			291,021			292,720			289,976
Net loss per share:
Basic	$	(0.56	)	$	(0.12	)	$	(0.38	)	$	(0.20	)
Diluted	$	(0.56	)	$	(0.12	)	$	(0.38	)	$	(0.20	)
Anti-dilutive equity instruments excluded from the calculation	2,679			3,875			4,178			5,126
Contingently issuable awards excluded from the calculation (b)	2,836			4,334			2,387			3,478

^(a) For all periods presented, there is no dilutive effect of equity instruments as the impact of these items is anti-dilutive due to the net loss incurred.

^(b) Contingently issuable awards were excluded from the determination of dilutive net income per share as the conditions were not met at the end of the reporting period.

13. Stock-Based Compensation

As of March 31, 2018, we had 13.5 million shares available for future grants under the amended and restated 2000 stock plan. We recognize stock-based compensation expenses over the requisite service periods. Our share-based awards are classified within equity. The amounts included in the condensed consolidated statements of operations related to stock-based compensation are as follows (dollars in thousands):

	Three Months Ended March 31,				Six Months Ended March 31,
	2018		2017		2018		2017
Cost of professional services and hosting	$	6,322	$	8,080	$	13,729	$	16,490
Cost of product and licensing	112		102		378		194
Cost of maintenance and support	885		1,010		2,089		1,987
Research and development	8,396		8,398		18,092		16,888
Sales and marketing	8,366		11,018		19,042		22,987
General and administrative	9,668		11,740		18,405		20,932
Total	$	33,749	$	40,348	$	71,735	$	79,478

Stock Options

The table below summarizes activities related to stock options for the six months endedMarch 31, 2018:

	Number of Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term	Aggregate Intrinsic Value(a)
Outstanding at September 30, 2017	23,807		$	15.39
Exercised	(1,859	)	$	3.41
Outstanding at March 31, 2018	21,948		$	16.40	2.6 years	$	0.1	million
Exercisable at March 31, 2018	21,939		$	16.41	2.6 years	$	0.1	million
Exercisable at March 31, 2017	1,042,671		$	16.36	0.7 years	$	1.0	million

^(a)  The aggregate intrinsic value in this table represents any excess of the closing market price of our common stock as of March 31, 2018 ($15.75) over the exercise price of the underlying options.

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NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

The aggregate intrinsic value of stock options exercised during the six months endedMarch 31, 2018 and 2017 was $0.02 million and $0.8 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 activities relating to restricted units for the six months endedMarch 31, 2018:

	Number of Shares Underlying Restricted Units — Contingent Awards		Number of Shares Underlying Restricted Units — Time-Based Awards
Outstanding at September 30, 2017	5,043,931		6,477,164
Granted	1,784,982		6,005,863
Earned/released	(1,687,862	)	(4,176,917	)
Forfeited	(1,236,037	)	(457,533	)
Outstanding at March 31, 2018	3,905,014		7,848,577
Weighted average remaining recognition period of outstanding restricted units	1.1 years		1.8 years
Unrecognized stock-based compensation expense of outstanding restricted units	$48.3 million		$86.0 million
Aggregate intrinsic value of outstanding restricted units(a)	$61.5 million		$123.7 million

^(a)  The aggregate intrinsic value in this table represents any excess of the closing market price of our common stock as of March 31, 2018 ($15.75) over the purchase price of the underlying restricted units.

A summary of the weighted-average grant-date fair value of restricted units granted, and the aggregate intrinsic value of restricted units vested during the periods noted is as follows:

	Six Months Ended March 31,
	2018		2017
Weighted-average grant-date fair value per share	$	15.67	$	16.05
Total intrinsic value of shares vested (in millions)	$	94.0	$	99.5

14. Income Taxes

The components of loss before income taxes are as follows (dollars in thousands):

	Three Months Ended March 31,						Six Months Ended March 31,
	2018			2017			2018			2017
Domestic	$	(79,921	)	$	(41,803	)	$	(119,952	)	$	(89,386	)
Foreign	(81,588		)	17,136			(66,850		)	51,144
Loss before income taxes	$	(161,509	)	$	(24,667	)	$	(186,802	)	$	(38,242	)

The components of provision (benefit) for income taxes are as follows (dollars in thousands):

	Three Months Ended March 31,						Six Months Ended March 31,
	2018			2017			2018			2017
Domestic	$	5,197		$	4,822		$	(75,669	)	$	8,981
Foreign	(2,653		)	4,319			(308		)	10,513
Provision (benefit) for income taxes	$	2,544		$	9,141		$	(75,977	)	$	19,494
Effective tax rate	(1.6		)%	(37.1		)%	40.7		%	(51.0		)%

On December 22, 2017, the Tax Cuts and Jobs Act ("TCJA") was signed into law. The TCJA significantly revises the U.S. corporate income tax by, among other things, lowering corporate income tax rates, implementing a hybrid territorial tax system, and imposing a mandatory one-time repatriation tax on foreign cash and earnings.

As a result of the TCJA, we remeasured certain deferred tax assets and liabilities at the lower rates and recorded approximately $87.0 million of tax benefits for the six months ended March 31, 2018, which also reflected an expense of $10.0 million for the

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three months ended March 31, 2018 as we revised our estimates of the timing and amounts of the temporary differences. Additionally, we recorded a $2.0 million provision for the deemed repatriation of foreign cash and earnings for the six months ended March 31, 2018, which also reflected a benefit of $12.0 million for the three months ended March 31, 2018 as we revised our estimates of foreign earnings and profits related to the mandatory repatriation tax.

The provisional amounts above were based upon the estimates of (i) temporary differences at the end of the upcoming tax year, (ii) the timing the temporary differences are expected to reverse, (iii) foreign earnings and profits, and (iv) foreign income taxes. The assessment is incomplete as of March 31, 2018. As our assessment is ongoing, these amounts may materially change as we revise our assumptions and estimates based on new information available to us, changes in our interpretations, additional guidance to be issued, and actions we may take as a result of the TCJA. We are still evaluating the full impact of other provisions of the TCJA, which may materially increase or decrease our income tax provision. The assessment is expected to be completed no later than the first quarter of fiscal year 2019.

In addition, as more fully described in Note 4, in connection with the impairment charge of SRS's goodwill, we recognized a tax benefit of $8.5 million related to the portion of deductible goodwill in Brazil for the three and six months ended March 31, 2018.

15. 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 at times actions with respect to contracts, intellectual property, employment, benefits and securities matters. At each balance sheet date we evaluate contingent liabilities associated with these matters in accordance with ASC 450 “Contingencies.” If the potential loss from any claim or legal proceeding is considered probable and the amount can be reasonably estimated, we accrue a liability for the estimated loss. Significant judgments are required for the determination of probability and the range of the outcomes, and estimates are based only on the best information available at the time. Due to the inherent uncertainties involved in claims and legal proceedings and in estimating losses that may arise, actual outcomes may differ from our estimates. Contingencies deemed not probable or for which losses were not estimable in one period may become probable, or losses may become estimable in later periods, which may have a material impact on our results of operations and financial position. As of March 31, 2018, accrued losses were not material to our condensed consolidated financial statements, and we do not expect any pending matter to have a material impact on our condensed consolidated financial statements.

Guarantees and Other

We include indemnification provisions in the contracts we enter with customers and business partners. 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 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.

16. Related Party Transaction

In January 2018, we entered into a software and license agreement (the "License Agreement") with Magnet Systems, Inc. ("Magnet"). A member of the Magnet board of directors also served on our board of directors at the time of the transaction. Pursuant to the License Agreement, Magnet granted Nuance a perpetual software license to certain technology for a one-time payment of

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$5.0 million in cash, with $3.5 million paid immediately upon the effective date of the License Agreement and $1.5 million payable upon the earlier of (i) the 120-day period following the effective date of the License Agreement or (ii) signature of a statement of work for the engineering services described below.

Additionally, we entered into a service agreement (the "Service Agreement") with Magnet, pursuant to which, Magnet will provide engineering services to assist in integrating the licensed technology into certain of our Enterprise solutions. The fees under the Service Agreement total $2.0 million, payable in six equal monthly installments upon the signature of the statement of work, which is to be finalized within 90 days following the effective date of the License Agreement.

As of March 31, 2018, $1.5 million related to the software license was included within Contingent and Deferred acquisition payments.

17. Segment and Geographic Information

During the first quarter of fiscal year 2018, we commenced a reorganization of our segment reporting structure to allow our Chief Operating Decision Maker ("CODM") greater focus on implementing strategic initiatives and identifying future investment opportunities. During the second quarter of fiscal year 2018, we established our Automotive business as a separate operating segment. Additionally, we moved our Dragon TV business from our Mobile operating segment into our Enterprise operating segment to consolidate our telecommunications market resources. Finally, our SRS business and our Devices business, originally included within our Mobile operating segment, are now presented within our Other segment. As a result, segment information for the three and six months ended March 31, 2018 and 2017 has been recast to reflect the new segment reporting structure.

Our CODM regularly reviews segment revenues and segment profits for performance evaluation and resources allocation. Segment revenues include certain acquisition-related adjustments for revenues that would otherwise have been recognized without the acquisition. Segment profits reflect controllable costs directly related to each segment and the allocation of certain corporate expenses such as, corporate sales and marketing expenses and research and development project costs that benefit multiple segments. Certain items such as stock-based compensation, amortization of intangible assets, acquisition-related costs, net, restructuring and other charges, net, other expenses, net and certain unallocated corporate expenses are excluded from segment profits, which allow for more meaningful comparisons to the financial results of the historical operations for performance evaluation and resources allocation by our CODM.

• The Healthcare segment is primarily engaged in providing 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 Enterprise segment is primarily engaged in using speech, natural language understanding, and artificial intelligence to provide automated customer solutions and services for voice, mobile, web and messaging channels.

• The Automotive segment is primarily engaged in providing automotive manufacturers and their suppliers branded and personalized virtual assistants and connected car services built on our voice recognition and natural language understanding technologies.

• 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.

• The Other segment includes our SRS business and our Devices business. Our SRS business provides value-added services to mobile operators in emerging markets, primarily in India and Brazil. Our Devices business provides speech recognition solutions and predictive text technologies to handset devices.

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We do not track our assets by segment. Consequently, it is not practical to show assets or depreciation by 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						Six Months Ended
	March 31,						March 31,
	2018			2017			2018			2017
Segment revenues:
Healthcare	$	261,239		$	238,466		$	506,775		$	477,673
Enterprise	112,668			122,126			233,266			237,504
Automotive	68,950			61,725			130,448			120,600
Imaging	48,933			53,048			104,563			105,137
Other	26,524			35,732			52,087			66,201
Total segment revenues	518,314			511,097			1,027,139			1,007,115
Less: acquisition-related revenues adjustments	(4,090		)	(11,524		)	(11,270		)	(19,884		)
Total revenues	514,224			499,573			1,015,869			987,231
Segment profit:
Healthcare	87,350			83,328			164,769			161,896
Enterprise	25,722			40,349			63,451			70,267
Automotive	28,875			29,312			52,082			56,942
Imaging	12,257			18,470			27,900			36,086
Other	6,084			12,548			9,505			20,430
Total segment profit	160,288			184,007			317,707			345,621
Corporate expenses and other, net	(65,093		)	(30,186		)	(109,757		)	(61,148		)
Acquisition-related revenues	(4,090		)	(11,524		)	(11,270		)	(19,884		)
Stock-based compensation	(33,749		)	(40,348		)	(71,735		)	(79,478		)
Amortization of intangible assets	(37,450		)	(45,130		)	(75,870		)	(88,531		)
Acquisition-related costs, net	(2,360		)	(5,379		)	(7,921		)	(14,405		)
Restructuring and other charges, net	(8,948		)	(19,911		)	(23,749		)	(26,614		)
Impairment of goodwill	(137,907		)	—			(137,907		)	—
Other expenses, net	(32,200		)	(56,196		)	(66,300		)	(93,803		)
Loss before income taxes	$	(161,509	)	$	(24,667	)	$	(186,802	)	$	(38,242	)

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				Six Months Ended
	March 31,				March 31,
	2018		2017		2018		2017
United States	$	367,613	$	352,937	$	731,899	$	702,107
International	146,611		146,636		283,970		285,124
Total revenues	$	514,224	$	499,573	$	1,015,869	$	987,231

18. Supplemental Cash Flow Information

Cash paid for Interest and Income Taxes:

	Three Months Ended March 31,				Six Months Ended March 31,
	2018		2017		2018		2017
	(Dollars in thousands)
Interest paid	$	21,427	$	34,814	$	48,708	$	45,883
Income taxes paid	$	4,233	$	4,432	$	8,833	$	8,636

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Non-Cash Investing and Financing Activities:

From time to time, we issue shares of our common stock in connection with our business and asset acquisitions, including shares issued as payment for acquisitions, shares initially held in escrow, and shares issued as payment for contingent consideration, as more fully described in Note 3.

23

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following Management’s Discussion and Analysis is intended to help the reader understand the results of operations and financial condition of our business. Management’s Discussion and Analysis is provided as a supplement to, and should be read in conjunction with, our consolidated financial statements and the accompanying notes to the condensed consolidated financial statements.

CAUTIONARY NOTE CONCERNING FORWARD-LOOKING STATEMENTS

This Quarterly Report on Form 10-Q including the sections entitled “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and “Quantitative and Qualitative Disclosures About Market Risk” under Items 2 and 3, respectively, of Part I of this report, and the sections entitled “Legal Proceedings” and “Risk Factors,” under Items 1 and 1A, respectively, of Part II of this report, contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 that involve risks, uncertainties and assumptions that, if they never materialize or if they prove incorrect, could cause our consolidated results to differ materially from those expressed or implied by such forward-looking statements. These forward-looking statements include predictions regarding:

• our future bookings, revenues, cost of revenues, research and development expenses, selling, general and administrative expenses, amortization of intangible assets and gross margin;

• our strategy relating to our segments;

• our programs to reduce costs and optimize processes;

• market trends;

• technological advancements;

• the potential of future product releases;

• our product development plans and the timing, amount and impact of investments in research and development;

• future acquisitions, and anticipated benefits from acquisitions;

• international operations and localized versions of our products; and

• the conduct, timing and outcome of legal proceedings and litigation matters.

You can identify these and other forward-looking statements by the use of words such as “may,” “will,” “should,” “expects,” “plans,” “anticipates,” “believes,” “estimates,” “predicts,” “intends,” “potential,” “continue” or the negative of such terms, or other comparable terminology. Forward-looking statements also include the assumptions underlying or relating to any of the foregoing statements. Our actual results could differ materially from those anticipated in these forward-looking statements for many reasons, including the risks described in Item 1A — “Risk Factors” and elsewhere in this Quarterly Report on Form 10-Q.

You should not place undue reliance on these forward-looking statements, which speak only as of the date of this Quarterly Report on Form 10-Q. Although we believe that the expectations reflected in the forward-looking statements are reasonable, we cannot guarantee future results, levels of activity, performance or achievements. We undertake no obligation to publicly release any revisions to the forward-looking statements or reflect events or circumstances after the date of this document.

OVERVIEW

Business Overview

We are a pioneer and leader in conversational and cognitive artificial intelligence (AI) innovations that bring intelligence to everyday work and life. Our solutions and technologies can understand, analyze and respond to human language to increase productivity and amplify human intelligence. Our solutions are used by businesses in the healthcare, automotive, financial services, telecommunication and travel industries, among others. We are seeing several trends in our markets, including (i) the growing adoption of cloud-based, connected services and highly interactive mobile applications, (ii) deeper integration of virtual assistant capabilities and services, and (iii) the continued expansion of our core technology portfolio including speech recognition, natural language understanding, semantic processing, domain-specific reasoning, dialog management capabilities, artificial intelligence, and biometric speaker authentication. We report our business in five segments, Healthcare, Enterprise, Automotive, Imaging and Other.

BusinessTrends

• Healthcare. Customers in our healthcare segment are broadly implementing electronic medical record systems and are working to improve clinical documentation, to improve quality of care, to minimize physician burnout and to integrate quality measures and to aid reimbursement. These trends are driving a shift towards more integrated solutions that combine both Dragon Medical and transcription services. Recently, higher demand for more integrated solutions have offset declines in legacy, hosted

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transcription services. Additionally, we have been able to capitalize on healthcare providers’ shift towards hosted, or cloud-based solutions, and away from perpetual licenses, by adding new innovations to our Dragon Medical cloud solutions including new clinical language understanding and Artificial Intelligence ("AI") capabilities designed to increase productivity and improve clinical documentation at the point of care and within existing electronic medical work flow.

• Enterprise. Consumer demand for 24/7, multi-channel access to customer service from the businesses they interact with is driving demand for our AI-powered omni-channel engagement solutions. We continue to enhance our technology capabilities with intelligent self-service and artificial intelligence for customer service, and to extend the market for our on-demand omni-channel enterprise solutions into international markets, expand our sales and solutions for biometrics, and expand our core products and services portfolio.

• Automotive. We established the Automotive segment as a stand-alone segment this quarter reflecting growing demand for our Automotive solutions and our desire to optimize our opportunity in this expanding market. Previously, our Automotive business was reported as part of our Mobile segment. Demand for our embedded and cloud-based automotive solutions is being driven by the growth in personalized, automotive virtual assistants and connected services for cars and by auto manufacturers' desire to create a branded and personalized experience, capable of integrating and intelligently managing customers’ personal smart phone and home device preferences and technologies.

• Imaging. The imaging market is evolving to include more networked solutions to multi-function printing ("MFP") devices, as well as more mobile access to those networked solutions, and away from packaged software. We are investing to merge the scan and print technology platforms to improve mobile access to our solutions and technologies, expand our distribution channels and embedded relationships, and expand our language coverage for optical character recognition ("OCR") in order to drive a more comprehensive and compelling offering to our partners.

• Other. The Other segment includes our Subscriber Revenue Services ("SRS") business and our Devices business. Our SRS business provides value-added services to mobile operators in emerging markets, primarily in India and Brazil. Our Devices business provides speech recognition solutions and predictive text technologies to handset devices.

As more fully described in Note 4 to the accompanying condensed consolidated financial statements, for the three and six months ended March 31, 2018, we recognized a goodwill impairment charge of $102.8 million related to SRS as a result of lowering our long-term projections of the business during the second quarter of fiscal year 2018 due to the recent market disruptions in India and Brazil. These markets have experienced recent and dramatic disruption as a result of accelerated change in competition and business models for our SRS mobile operator customers. Specifically, the rapid shift away from a model where voice, data and text are offered separately toward unlimited bundled services at considerably lower costs has significantly reduced mobile operators’ demand for our services. This reduced demand materially impacts our future expectations for SRS revenues. As a result, executive management performed an updated strategic assessment and reduced the long-term growth rates and profitability contemplated in SRS's multi-year operating plan. We concluded that these financial results coupled with the accelerated market shifts being experienced in the industry were factors that represented impairment indicators, triggering a review of goodwill and indefinite-lived intangible assets for impairment during the second quarter of fiscal 2018.

Additionally, we recognized a $35.1 million goodwill impairment related to our Devices business, which has been declining due to the ongoing consolidation of our handset manufacturer customer base and continued erosion of our penetration of the remaining market. While the business has been performing in line with our expectations, the reorganization, as more fully described in Note 17 to the accompanying condensed consolidated financial statements, triggered an assessment for the goodwill assigned to the business.

Key Metrics

A summary of key financial metrics for the six months endedMarch 31, 2018, as compared to the six months endedMarch 31, 2017, is as follows:

• Total revenues increased by $28.6 million to $1,015.9 million;

• Net loss increased by $53.1 million to $110.8 million;

• Gross margins decreased by 1.2 percentage points to 55.7%;

• Operating margins decreased by 17.5 percentage points to (11.9)%; and

• Cash provided by operating activities decreased by $55.0 million to $195.4 million.

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As of March 31, 2018, as compared to March 31, 2017:

• Total deferred revenue increased by 10.0% from $802.4 million to $882.7 million, primarily driven by the continued growth of our Automotive connected services and Healthcare bundled offerings.

A summary of key operating metrics for the three months endedMarch 31, 2018, as compared to the three months endedMarch 31, 2017, is as follows:

• Net new bookings decreased by 8% from one year ago to $376.6 million, primarily due to declines in our Automotive and Imaging segments.

Bookings represent the estimated gross revenue value of transactions at the time of contract execution, except for maintenance and support offerings. For fixed price contracts, the bookings value represents the gross total contract value. For contracts where revenue is based on transaction volume, the bookings value represents the contract price multiplied by the estimated future transaction volume during the contract term, whether or not such transaction volumes are guaranteed under a minimum commitment clause. Actual results could be different than our initial estimate. The maintenance and support bookings value represents the amounts the customer is invoiced in the period. Because of the inherent estimates required to determine bookings and the fact that the actual resultant revenue may differ from our initial bookings estimates, we consider bookings one indicator of potential future revenue and not as an arithmetic measure of backlog.

Net new bookings represents the estimated revenue value at the time of contract execution from new contractual arrangements or the estimated revenue value incremental to the portion of value that will be renewed under pre-existing arrangements.

• Recurring revenue represented 71% and 74% of total revenue for three months endedMarch 31, 2018 and March 31, 2017, respectively. Recurring revenue represents the sum of recurring hosting, product and licensing, and maintenance and support revenues as well as the portion of professional services revenue delivered under ongoing contracts. Recurring product and licensing revenue comprises term-based and ratable licenses as well as revenues from royalty arrangements.

• Annualized line run-rate in our on-demand healthcare solutions decreased by 33% from a year ago to approximately 3.2 billion lines per year. The decrease was primarily due to the continued erosion in our transcription services and the impact of the 2017 Malware Incident, as defined below. The annualized line run-rate is determined using billed equivalent line counts in a given quarter, multiplied by four.

• Estimated three-year value of total on-demand contracts as of March 31, 2018 decreased by 9% from a year ago to approximately $2.3 billion. The decrease was primarily due to the continued erosion in our transcription services, and the impact of the 2017 Malware Incident, offset in part by growth in our Dragon Medical cloud and Automotive solutions. We determine this value as of the end of the period reported, by using our estimate of three years of anticipated future revenue streams under signed on-demand contracts then in place, whether or not they are guaranteed through a minimum commitment clause. Our estimate is based on assumptions used in evaluating the contracts and determining sales compensation, adjusted for changes in estimated launch dates, actual volumes achieved, and other factors deemed relevant. For contracts with an expiration date beyond three years, we include only the value expected within three years. For other contracts, we assume renewal consistent with historic renewal rates unless there is a known cancellation. Contracts are generally priced by volume of usage and typically have no or low minimum commitments. Actual revenue could vary from our estimates due to factors such as cancellations, non-renewals or volume fluctuations.

Cybersecurity & Data Privacy Matters

On June 27, 2017, Nuance was a victim of the global NotPetya malware incident (the “2017 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. For fiscal year 2017, we estimate that we lost approximately $68.0 million in revenues, primarily in our Healthcare segment, due to the service disruption and the reserves we established for customer refund credits related to 2017 Malware Incident. Additionally, we incurred incremental costs of approximately $24.0 million for fiscal year 2017 as a result of our remediation and restoration efforts, as well as incremental amortization expenses. Although the direct effects of the 2017 Malware Incident were remediated during fiscal year 2017, as explained below, the 2017 Malware Incident had a continued effect on our results of operations in the first half of fiscal year 2018 including contributing to: a year-over-year decline in the annualized line run-rate in our on-demand healthcare solutions and in the estimated three-year value of on-demand contracts; a year-over-year decline in hosted revenue and an increase in restructuring and other charges. In addition, we expect to expend additional resources during the remainder of fiscal year 2018 and beyond to continue to enhance and upgrade information security.

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In addition, in December 2017, an unauthorized third party illegally accessed certain reports hosted on a Nuance transcription platform. This incident was limited in scope to records of approximately 45,000 individuals and was isolated to a single transcription platform that was promptly shutdown. Customers using that platform were notified of the incident and were migrated to our eScription transcription platforms. We also notified law enforcement authorities and have cooperated in their investigation into the matter. The law enforcement investigation resulted in the identification of the third party, and the accessed reports have been recovered. This incident did not have a material effect on our financial results for the six months endedMarch 31, 2018 and is not expected to have a material effect on our financial results for future periods. Future cybersecurity or data privacy incidents could have a material adverse effect on our results of operations. See “Risk Factors - Cybersecurity and data privacy incidents or breaches may damage client relations and inhibit our growth.”

RESULTS OF OPERATIONS

Total Revenues

The following tables show total revenues by product type and by geographic location, based on the location of our customers, in dollars and percentage change (dollars in millions):

	Three Months Ended				Dollar Change			Percent Change		Six Months Ended				Dollar Change			Percent Change
	March 31,									March 31,
	2018		2017							2018		2017
Professional services and hosting	$	274.6	$	258.7	$	15.9		6.1	%	$	533.6	$	512.1	$	21.5		4.2	%
Product and licensing	161.3		159.3		2.0			1.3	%	323.1		311.0		12.1			3.9	%
Maintenance and support	78.4		81.6		(3.2		)	(4.0	)%	159.2		164.1		(4.9		)	(3.0	)%
Total Revenues	$	514.2	$	499.6	$	14.6		2.9	%	$	1,015.9	$	987.2	$	28.7		2.9	%
United States	$	367.6	$	352.9	$	14.7		4.2	%	$	731.9	$	702.1	$	29.8		4.2	%
International	146.6		146.6		—			—	%	284.0		285.1		(1.1		)	(0.4	)%
Total Revenues	$	514.2	$	499.6	$	14.6		2.9	%	$	1,015.9	$	987.2	$	28.7		2.9	%

The geographic split for the three months endedMarch 31, 2018 was 71% of total revenues in the United States and 29% internationally, as compared to 71% of total revenues in the United States and 29% internationally for the three months endedMarch 31, 2017.

The geographic split for the six months endedMarch 31, 2018 was 72% of total revenues in the United States and 28% internationally, as compared to 71% of total revenues in the United States and 29% internationally for the six months endedMarch 31, 2017.

Professional Services and Hosting Revenue

Professional services revenue primarily consists of consulting, implementation and training services for customers. Hosting revenue primarily relates to delivering on-demand hosted services, such as medical transcription, automated customer care applications, mobile operator services, mobile infotainment and search and transcription, over a specified term. The following table shows professional services and hosting revenue, in dollars and as a percentage of total revenues (dollars in millions):

	Three Months Ended						Dollar Change			Percent Change		Six Months Ended						Dollar Change			Percent Change
	March 31,											March 31,
	2018			2017								2018			2017
Professional services revenue	$	80.2		$	56.5		$	23.6		41.8	%	$	154.1		$	116.7		$	37.4		32.0	%
Hosting revenue	194.4			202.2			(7.8		)	(3.8	)%	379.5			395.4			(15.9		)	(4.0	)%
	$	274.6		$	258.7		$	15.9		6.1	%	$	533.6		$	512.1		$	21.5		4.2	%
As a percentage of total revenue	53.4		%	51.8		%						52.5		%	51.9		%

Three Months EndedMarch 31, 2018 compared to Three Months EndedMarch 31, 2017

Hosting revenue decreased by $7.8 million, or 3.8%, primarily due to a $8.3 million decrease in our Other segment and a $4.5 million decrease in Healthcare segment, partially offset by a $4.0 million increase in our Automotive segment. Hosting revenue in Other segment decreased due to lower revenue from both our SRS and Devices businesses. Healthcare hosting revenue decreased primarily due to the continued erosion in transcription services, and the negative impact of the 2017 Malware Incident, offset in part by the continued market penetration and growth of our Dragon cloud-based solutions. Automotive hosting revenue increased due to continued growth in our connected services.

Professional services revenue increased by $23.6 million, or 41.8% primarily due to higher revenue from electronic healthcare record ("EHR") implementation and optimization services in our Healthcare segment.

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As a percentage of total revenue, professional services and hosting revenue increased from 51.8% to 53.4%, primarily due to higher professional services revenue discussed above.

Six Months EndedMarch 31, 2018 compared to Six Months EndedMarch 31, 2017

Hosting revenue decreased by $15.9 million, or 4.0%, primarily due to a $13.6 million decrease in our Other segment and a $11.6 million decrease in our Healthcare segment, partially offset by a $7.6 million increase in our Automotive segment. Hosting revenue in Other segment decreased due to lower revenue from both our SRS and Devices businesses. Healthcare hosting revenue decreased primarily due to the continued erosion in transcription services, and the negative impact of the 2017 Malware Incident, offset in part by the continued market penetration and growth of our Dragon cloud-based solutions. Automotive hosting revenue increased primarily due to continued growth in our connected services.

Professional services revenue increased by $37.4 million, or 32.0% primarily due to higher revenue from EHR implementation and optimization services in our Healthcare segment.

As a percentage of total revenue, professional services and hosting revenue increased from 51.9% to 52.5%, primarily due to higher professional services revenue in our Healthcare segment discussed above.

Product and Licensing Revenue

Product and licensing revenue primarily consists of sales and licenses of our technology. The following table shows product and licensing revenue, in dollars and as a percentage of total revenues (dollars in millions):

	Three Months Ended						Dollar Change		Percent Change		Six Months Ended						Dollar Change		Percent Change
	March 31,										March 31,
	2018			2017							2018			2017
Product and licensing revenue	$	161.3		$	159.3		$	2.0	1.3	%	$	323.1		$	311.0		$	12.1	3.9	%
As a percentage of total revenue	31.4		%	31.9		%					31.8		%	31.5		%

Three Months EndedMarch 31, 2018 compared to Three Months EndedMarch 31, 2017

Product and licensing revenue increased by $2.0 million, or 1.3%, primarily due to a $4.8 million increase in Automotive and a $6.3 million increase in Healthcare, mostly offset by a $5.0 million decrease in Enterprise and a $4.5 million decrease in Imaging. Automotive product and licensing revenue increased primarily due to royalties from existing customers. Healthcare product and licensing revenue increased primarily as a result of higher revenue from diagnostics solutions due to recent acquisitions, and the increase in Dragon Medical solutions. Enterprise product and licensing revenue decreased primarily due to lower contact center license revenue. Imaging product and licensing revenue decreased primarily due to lower revenue from our scanning and print management solutions. As a percentage of total revenue, product and licensing revenue decreased from 31.9% to 31.4% as customers continued to transition from Dragon perpetual licenses to Dragon cloud-based solutions in Healthcare.

Six Months EndedMarch 31, 2018 compared to Six Months EndedMarch 31, 2017

Product and licensing revenue increased by $12.1 million, or 3.9%, primarily due to a $5.4 million increase in Automotive and a $10.5 million increase in Healthcare, offset in part by a $3.9 million decrease in Enterprise. Automotive product and licensing revenue increased primarily due to royalties from existing customers. Healthcare product and licensing revenue increased primarily as a result of higher revenue from diagnostics solutions due to recent acquisitions, and the increase in Dragon Medical solutions. Enterprise product and licensing revenue decreased primarily due to lower contact center license revenue. As a percentage of total revenue, product and licensing revenue increased from 31.5% to 31.8%, primarily due to higher revenue in our healthcare segment related to recent acquisitions, offset in part by customers' continued transition from Dragon perpetual licenses to Dragon cloud-based solutions.

Maintenance and Support Revenue

Maintenance and support revenue primarily consists of technical support and maintenance services. The following table shows maintenance and support revenue, in dollars and as a percentage of total revenues (dollars in millions):

	Three Months Ended						Dollar Change			Percent Change		Six Months Ended						Dollar Change			Percent Change
	March 31,											March 31,
	2018			2017								2018			2017
Maintenance and support revenue	$	78.4		$	81.6		$	(3.2	)	(4.0	)%	$	159.2		$	164.1		$	(4.9	)	(3.0	)%
As a percentage of total revenue	15.2		%	16.3		%						15.7		%	16.6		%

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Three Months EndedMarch 31, 2018 compared to Three Months EndedMarch 31, 2017

Maintenance and support revenue decreased by $3.2 million, or 4.0%. As a percentage of total revenue, maintenance and support revenue decreased from 16.3% to 15.2%. The decreases were primarily due to the continuing customer transition from product licenses to cloud-based solutions in Healthcare.

Six Months EndedMarch 31, 2018 compared to Six Months EndedMarch 31, 2017

Maintenance and support revenue decreased by $4.9 million, or 3.0%. As a percentage of total revenue, maintenance and support revenue decreased from 16.6% to 15.7%. The decreases were primarily due to the continuing customer transition from product licenses to cloud-based solutions in Healthcare.

COSTS AND EXPENSES

Cost of Professional Services and Hosting Revenue

Cost of professional services and hosting revenue primarily consists of compensation for services personnel, outside consultants and overhead, as well as the hardware, infrastructure and communications fees that support our hosting solutions. The following table shows the cost of professional services and hosting revenue, in dollars and as a percentage of professional services and hosting revenue (dollars in millions):

	Three Months Ended						Dollar Change		Percent Change		Six Months Ended						Dollar Change		Percent Change
	March 31,										March 31,
	2018			2017							2018			2017
Cost of professional services and hosting revenue	$	181.1		$	164.2		$	16.9	10.3	%	$	353.6		$	329.1		$	24.5	7.5	%
As a percentage of professional services and hosting revenue	65.9		%	63.5		%					66.3		%	64.3		%

Three Months EndedMarch 31, 2018 compared to Three Months EndedMarch 31, 2017

The increase in cost of professional services and hosting revenue was primarily due to the growth in our Dragon Medical cloud-based solutions and EHR implementation and optimization services, offset in part by the decline in transcription services revenue. Gross margin decreased by 2.4 percentage points primarily due to margin compression in our medical transcription services and the increase in EHR implementation and optimization services which carried lower margins, offset in part by a favorable shift in revenue mix towards higher margin Dragon Medical cloud-based offerings. Also contributing to the decrease was lower gross margin in our Enterprise segment due to lower revenues and the relatively fixed hosting costs, and the margin compression in Other segment due to the margin erosions in our Devices and SRS businesses.

Six Months EndedMarch 31, 2018 compared to Six Months EndedMarch 31, 2017

The increase in cost of professional services and hosting revenue was primarily due to the growth in our Dragon Medical cloud-based solutions and EHR implementation and optimization services, offset in part by the decline in transcription services revenue. Gross margin decreased by 2.0 percentage points primarily due to margin compression in our medical transcription services and the increase in EHR implementation and optimization services which carried lower margins, offset in part by a favorable shift in revenue mix towards higher margin Dragon Medical cloud-based offerings. Also contributing to the decrease was lower gross margin in our Enterprise segment due to lower revenues and the relatively fixed hosting costs, and the margin compression in Other segment due to the margin erosions in our Devices and SRS businesses.

Cost of Product and Licensing Revenue

Cost of product and licensing revenue primarily consists of material and fulfillment costs, manufacturing and operations costs and third-party royalty expenses. The following table shows the cost of product and licensing revenue, in dollars and as a percentage of product and licensing revenue (dollars in millions):

	Three Months Ended						Dollar Change		Percent Change		Six Months Ended						Dollar Change		Percent Change
	March 31,										March 31,
	2018			2017							2018			2017
Cost of product and licensing revenue	$	19.0		$	18.8		$	0.2	0.9	%	$	38.0		$	37.2		$	0.8	2.3	%
As a percentage of product and licensing revenue	11.8		%	11.8		%					11.8		%	12.0		%

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Three Months EndedMarch 31, 2018 compared to Three Months EndedMarch 31, 2017

Cost of product and licensing revenue increased by $0.2 million, or 0.9%. Gross margin was essentially flat year-over-year.

Six Months EndedMarch 31, 2018 compared to Six Months EndedMarch 31, 2017

Cost of product and licensing revenue increased by $0.8 million, or 2.3%. Gross margin increased by 0.2 percentage points, or essentially flat year-over-year.

Cost of Maintenance and Support Revenue

Cost of maintenance and support revenue primarily consists of compensation for product support personnel and overhead. The following table shows the cost of maintenance and support revenue, in dollars and as a percentage of maintenance and support revenue (dollars in millions):

	Three Months Ended						Dollar Change		Percent Change		Six Months Ended						Dollar Change		Percent Change
	March 31,										March 31,
	2018			2017							2018			2017
Cost of maintenance and support revenue	$	14.2		$	13.2		$	1.0	7.2	%	$	28.4		$	26.8		$	1.6	5.9	%
As a percentage of maintenance and support revenue	18.1		%	16.2		%					17.9		%	16.4		%

Three Months EndedMarch 31, 2018 compared to Three Months EndedMarch 31, 2017

Cost of maintenance and support revenue increased by $1.0 million, or 7.2%. Gross margins decreased by 1.9 percentage points primarily driven by lower margin on Dragon Medical maintenance and support services in healthcare.

Six Months EndedMarch 31, 2018 compared to Six Months EndedMarch 31, 2017

Cost of maintenance and support revenue increased by $1.6 million, or 5.9%. Gross margins decreased by 1.5 percentage points primarily due to lower margin on Dragon Medical maintenance and support services.

Research and Development Expense

Research and development ("R&D") expense primarily consists of salaries, benefits, and overhead relating to engineering staff as well as third party engineering costs. The following table shows research and development expense, in dollars and as a percentage of total revenues (dollars in millions):

	Three Months Ended						Dollar Change		Percent Change		Six Months Ended						Dollar Change		Percent Change
	March 31,										March 31,
	2018			2017							2018			2017
Research and development expense	$	74.2		$	66.2		$	8.0	12.0	%	$	147.6		$	132.6		$	15.0	11.3	%
As a percentage of total revenue	14.4		%	13.3		%					14.5		%	13.4		%

Three Months EndedMarch 31, 2018 compared to Three Months EndedMarch 31, 2017

Research and development expense increased by $8.0 million, or 12.0%, primarily due to higher compensation expenses as a result of higher R&D headcount as we continue to enhance our R&D capability and invest in new technologies to support our long-term growth.

Six Months EndedMarch 31, 2018 compared to Six Months EndedMarch 31, 2017

Research and development expense increased by $15.0 million, or 11.3%, primarily due to higher compensation expenses as a result of higher R&D headcount as we continue to enhance our R&D capability and invest in new technologies to support our long-term growth.

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Sales and Marketing Expense

Sales and marketing expense includes salaries and benefits, commissions, advertising, direct mail, public relations, tradeshow costs and other costs of marketing programs, travel expenses associated with our sales organization and overhead. The following table shows sales and marketing expense, in dollars and as a percentage of total revenues (dollars in millions):

	Three Months Ended						Dollar Change		Percent Change		Six Months Ended						Dollar Change		Percent Change
	March 31,										March 31,
	2018			2017							2018			2017
Sales and marketing expense	$	94.2		$	93.7		$	0.5	0.5	%	$	196.1		$	195.2		$	1.0	0.5	%
As a percentage of total revenue	18.3		%	18.8		%					19.3		%	19.8		%

Three Months EndedMarch 31, 2018 compared to Three Months EndedMarch 31, 2017

Sales and marketing expense increased by $0.5 million, or 0.5%, primarily driven by increases in marketing and communication expenses, offset in part by lower compensation expenses.

Six Months EndedMarch 31, 2018 compared to Six Months EndedMarch 31, 2017

Sales and marketing expense increased by $1.0 million, or 0.5%, primarily due to the increase in professional service expenses and marketing and communication expenses.

General and Administrative Expense

General and administrative expense primarily consists of personnel costs for administration, finance, human resources, general management, fees for external professional advisers including accountants and attorneys, and provisions for doubtful accounts. The following table shows general and administrative expense, in dollars and as a percentage of total revenues (dollars in millions):

	Three Months Ended						Dollar Change		Percent Change		Six Months Ended						Dollar Change		Percent Change
	March 31,										March 31,
	2018			2017							2018			2017
General and administrative expense	$	74.3		$	41.5		$	32.8	78.9	%	$	127.2		$	81.3		$	45.9	56.4	%
As a percentage of total revenue	14.4		%	8.3		%					12.5		%	8.2		%

Three Months EndedMarch 31, 2018 compared to Three Months EndedMarch 31, 2017

General and administrative expense increased by $32.8 million, or 78.9%, primarily due to professional service costs related to evaluating strategic alternatives for certain businesses and establishing the Automotive business as a separate operating segment.

Six Months EndedMarch 31, 2018 compared to Six Months EndedMarch 31, 2017

General and administrative expense increased by $45.9 million, or 56.4%, primarily due to professional services costs related to evaluating strategic alternatives for certain businesses and establishing the Automotive business as a separate operating segment.

Amortization of Intangible Assets

Amortization of acquired patents and technologies are included within cost of revenue and the amortization of acquired customer and contractual relationships, non-compete agreements, acquired trade names and trademarks, and other intangibles are included within operating expenses. Customer relationships are amortized based upon the pattern in which the economic benefits of the customer relationships are expected to be realized. Other identifiable intangible assets are amortized on a straight-line basis over their estimated useful lives. Amortization expense was recorded as follows (dollars in millions):

	Three Months Ended						Dollar Change			Percent Change		Six Months Ended						Dollar Change			Percent Change
	March 31,											March 31,
	2018			2017								2018			2017
Cost of revenue	$	14.8		$	17.2		$	(2.4	)	(14.2	)%	$	30.1		$	32.8		$	(2.6	)	(8.0	)%
Operating expenses	22.7			27.9			(5.2		)	(18.8	)%	45.7			55.8			(10.0		)	(18.0	)%
Total amortization expense	$	37.5		$	45.1		$	(7.7	)	(17.0	)%	$	75.9		$	88.5		$	(12.7	)	(14.3	)%
As a percentage of total revenue	7.3		%	9.0		%						7.5		%	9.0		%

The decreases in total amortization of intangible assets for the three and six months endedMarch 31, 2018, as compared to the prior year periods, were primarily due to certain intangible assets having been fully amortized during fiscal year 2017.

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Acquisition-Related Costs, Net

Acquisition-related costs include costs related to business acquisitions. These costs consist of (i) transition and integration costs, including retention payments, transitional employee costs, earn-out payments, and other costs related to integration activities; (ii) professional service fees, 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) fair value adjustments to acquisition-related contingencies. A summary of the acquisition-related costs is as follows (dollars in millions):

	Three Months Ended						Dollar Change			Percent Change		Six Months Ended						Dollar Change			Percent Change
	March 31,											March 31,
	2018			2017								2018			2017
Transition and integration costs	$	3.4		$	3.6		$	(0.2	)	(6.8	)%	$	7.4		$	7.3		$	0.1		1.5	%
Professional service fees	0.9			3.0			(2.0		)	(68.4	)%	1.5			8.0			(6.5		)	(81.8	)%
Acquisition-related adjustments	(1.9		)	(1.2		)	(0.7		)	61.3	%	(1.0		)	(0.9		)	(0.1		)	5.6	%
Total acquisition-related costs, net	$	2.4		$	5.4		$	(3.0	)	(56.1	)%	$	7.9		$	14.4		$	(6.5	)	(45.0	)%
As a percentage of total revenue	0.5		%	1.1		%						0.8		%	1.5		%

The decreases in acquisition-related costs, net for the three and six months endedMarch 31, 2018, as compared to the prior year periods, were primarily due to the decrease in professional service fees driven by reduced acquisition activities during fiscal year 2018.

Restructuring and Other Charges, Net

While restructuring and other charges, net are excluded from segment profits, the table below presents the restructuring and other charges, net associated with each segment (dollars in thousands):

	Three Months Ended March 31,
	2018											2017
	Personnel		Facilities			Total Restructuring		Other Charges		Total		Personnel		Facilities		Total Restructuring		Other Charges		Total
Healthcare	$	788	$	—		$	788	$	—	$	788	$	577	$	593	$	1,170	$	—	$	1,170
Enterprise	265		7			272		—		272		388		257		645		—		645
Automotive	849		—			849		—		849		1,247		—		1,247		—		1,247
Imaging	83		(16		)	67		—		67		225		36		261		—		261
Other	1,095		558			1,653		—		1,653		1,806		51		1,857		10,773		12,630
Corporate	707		798			1,505		3,814		5,319		332		1,318		1,650		2,308		3,958
Total	$	3,787	$	1,347		$	5,134	$	3,814	$	8,948	$	4,575	$	2,255	$	6,830	$	13,081	$	19,911

	Six Months Ended March 31,
	2018											2017
	Personnel		Facilities			Total Restructuring		Other Charges		Total		Personnel		Facilities		Total Restructuring		Other Charges		Total
Healthcare	$	3,301	$	25		$	3,326	$	—	$	3,326	$	2,561	$	870	$	3,431	$	—	$	3,431
Enterprise	527		2,367			2,894		—		2,894		812		864		1,676		—		1,676
Automotive	1,000		—			1,000		—		1,000		1,415		—		1,415		—		1,415
Imaging	1,306		(7		)	1,299		—		1,299		586		387		973		—		973
Other	1,344		569			1,913		—		1,913		1,850		51		1,901		10,773		12,674
Corporate	1,192		58			1,250		12,067		13,317		1,000		1,982		2,982		3,463		6,445
Total	$	8,670	$	3,012		$	11,682	$	12,067	$	23,749	$	8,224	$	4,154	$	12,378	$	14,236	$	26,614

FiscalYear2018

For the six months endedMarch 31, 2018, we recorded restructuring charges of $11.7 million, which included $8.7 million related to the termination of approximately 400 employees and $3.0 million related to certain excess facilities. Of these amounts, $5.1 million was recorded for the three months ended March 31, 2018, including $3.8 million related to employee termination and $1.3 million related to certain excess facilities. These actions were part of our strategic initiatives focused on investment rationalization, process optimization and cost reduction. We expect the remaining outstanding severance of $1.4 million to be substantially paid during fiscal year 2018, and the remaining balance of $8.5 million related to excess facilities to be paid through fiscal year 2025, in accordance with the terms of the applicable leases.

Additionally, for the six months endedMarch 31, 2018, we recorded $4.6 million related to the transition agreement of our former

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CEO, $7.5 million related to our remediation and restoration efforts after the 2017 Malware Incident that occurred in the third quarter of fiscal year 2017. Of these amounts, $2.3 million related to the CEO transition and $1.5 million related to the 2017 Malware Incident was recorded for the three months ended March 31, 2018. The cash payments associated with the CEO transition agreement are expected to be made through fiscal year 2020.

FiscalYear2017

For the six months endedMarch 31, 2017, we recorded restructuring charges of $12.4 million, which included $8.2 million related to the termination of approximately 220 employees and $4.2 million related to certain excess facilities. Of these amounts, $6.8 million was recorded for the three months ended March 31, 2017, including $4.6 million related to employee termination and $2.3 million related to certain excess facilities. These actions were part of our strategic initiatives focused on process optimization and cost reduction.

Additionally, for the six months endedMarch 31, 2017, we recorded $3.5 million related to the transition agreement of our former CEO and $10.8 million non-cash impairment charge related to an internally developed software. Of these amounts, $2.3 million related to the CEO transition and $10.8 million non-cash impairment charge were recorded for the three months ended March 31, 2017.

Impairment of Goodwill

FiscalYear2018

As more fully described in Note 4 of the accompanying condensed consolidated financial statements, for the three and six months ended March 31, 2018, we recorded a goodwill impairment charge of $137.9 million related to Other segment, with $35.1 million related to Devices and $102.8 million related to SRS.

Other Expense, Net

A summary of other expenses, net is as follows (dollars in millions):

	Three Months Ended						Dollar Change		Percent Change		Six Months Ended						Dollar Change		Percent Change
	March 31,										March 31,
	2018			2017							2018			2017
Interest income	$	2.2		$	1.3		$	1.0	74.7	%	$	4.4		$	2.3		$	2.1	92.3	%
Interest expense	(33.9		)	(37.9		)	4.0		(10.5	)%	(69.9		)	(75.9		)	5.9		(7.8	)%
Other expense, net	(0.6		)	(19.6		)	19.1		(96.9	)%	(0.8		)	(20.2		)	19.4		(96.1	)%
Total other expense, net	$	(32.2	)	$	(56.2	)	$	24.0	(42.7	)%	$	(66.3	)	$	(93.8	)	$	27.5	(29.3	)%
As a percentage of total revenue	6.3		%	11.2		%					6.5		%	9.5		%

The decreases for the three and six months endedMarch 31, 2018, as compared to the prior year periods, were primarily due to debt extinguishment losses of $18.6 million for the partial repayment of our 2020 Senior Notes in fiscal year 2017.

Provision for Income Taxes

The following table shows the provision (benefit) for income taxes and the effective income tax rate (dollars in millions):

	Three Months Ended						Dollar Change			Percent Change		Six Months Ended						Dollar Change			Percent Change
	March 31,											March 31,
	2018			2017								2018			2017
Provision (benefit) for income taxes	$	2.5		$	9.1		$	(6.6	)	(72.2	)%	$	(76.0	)	$	19.5		$	(95.5	)	(489.7	)%
Effective income tax rate	(1.6		)%	(37.1		)%						40.7		%	(51.0		)%

As more fully described in Note 14 to the accompanying condensed consolidated financial statements, as a result of the Tax Cuts and Jobs Act ("TCJA"), we remeasured certain deferred tax assets and liabilities at the lower rates and recorded approximately $87.0 million of tax benefits for the six months ended March 31, 2018, which also reflected an expense of $10.0 million for the three months ended March 31, 2018 as we revised our estimates of the timing and amounts of the temporary differences. Additionally, we recorded a $2.0 million provision for the deemed repatriation of foreign cash and earnings for the six months ended March 31, 2018, which also reflected a benefit of $12.0 million for the three months ended March 31, 2018 as we revised our estimates of foreign earnings and profits related to the mandatory repatriation tax.

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In addition, as more fully described in Note 4 to the condensed consolidated financial statements, in connection with the impairment charge of SRS's goodwill, we recognized a tax benefit of $8.5 million related to the portion of deductible goodwill in Brazil for the three and six months ended March 31, 2018.

SEGMENT ANALYSIS

During the first quarter of fiscal year 2018, we commenced a reorganization of our segment reporting structure to allow our Chief Operating Decision Maker ("CODM") greater focus on implementing strategic initiatives and identifying future investment opportunities. During the second quarter of fiscal year 2018, we established our Automotive business as a separate operating segment. Additionally, we moved our Dragon TV business from our Mobile operating segment into our Enterprise operating segment to consolidate our telecommunications market resources. Finally, our SRS business and our Devices business, originally included within our Mobile operating segment, are now presented within our Other segment. As a result, segment information for the three and six months ended March 31, 2018 and 2017 has been recast to reflect the new segment reporting structure.

The following table presents certain financial information about our operating segments (dollars in millions):

	Three Months Ended						Change			Percent Change		Six Months Ended						Change			Percent Change
	March 31,											March 31,
	2018			2017								2018			2017
Segment Revenues(a):
Healthcare	$	261.2		$	238.5		$	22.7		9.5	%	$	506.8		$	477.7		$	29.1		6.1	%
Enterprise	112.7			122.1			(9.4		)	(7.7	)%	233.3			237.5			(4.2		)	(1.8	)%
Automotive	69.0			61.7			7.3			11.7	%	130.4			120.6			9.8			8.2	%
Imaging	48.9			53.0			(4.1		)	(7.8	)%	104.6			105.1			(0.5		)	(0.5	)%
Other	26.5			35.7			(9.2		)	(25.8	)%	52.1			66.2			(14.1		)	(21.3	)%
Total segment revenues	$	518.3		$	511.1		$	7.2		1.4	%	$	1,027.1		$	1,007.1		$	20.0		2.0	%
Less: acquisition related revenues adjustments	(4.1		)	(11.5		)	7.4			(64.5	)%	(11.3		)	(19.9		)	8.6			(43.3	)%
Total revenues	$	514.2		$	499.6		$	14.6		2.9	%	$	1,015.9		$	987.2		$	28.7		2.9	%
Segment Profit:
Healthcare	$	87.4		$	83.3		$	4.1		4.8	%	$	164.8		$	161.9		$	2.9		1.8	%
Enterprise	25.7			40.3			(14.6		)	(36.3	)%	63.5			70.3			(6.8		)	(9.7	)%
Automotive	28.9			29.3			(0.4		)	(1.5	)%	52.1			56.9			(4.8		)	(8.5	)%
Imaging	12.3			18.5			(6.2		)	(33.6	)%	27.9			36.1			(8.2		)	(22.7	)%
Other	6.1			12.5			(6.4		)	(51.5	)%	9.5			20.4			(10.9		)	(53.5	)%
Total segment profit	$	160.3		$	184.0		$	(23.7	)	(12.9	)%	$	317.7		$	345.6		$	(27.9	)	(8.1	)%
Segment Profit Margin:
Healthcare	33.4		%	34.9		%	(1.5		)			32.5		%	33.9		%	(1.4		)
Enterprise	22.8		%	33.0		%	(10.2		)			27.2		%	29.6		%	(2.4		)
Automotive	41.9		%	47.5		%	(5.6		)			39.9		%	47.2		%	(7.3		)
Imaging	25.0		%	34.8		%	(9.8		)			26.7		%	34.3		%	(7.6		)
Other	22.9		%	35.1		%	(12.2		)			18.2		%	30.9		%	(12.6		)
Total segment profit margin	30.9		%	36.0		%	(5.1		)			30.9		%	34.3		%	(3.4		)

^(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.

Segment Revenues

Three Months EndedMarch 31, 2018 compared to Three Months EndedMarch 31, 2017

• Healthcare segment revenue increased by $22.7 million, or 9.5%, primarily due to higher revenue from Dragon Medical cloud-based solutions and EHR implementation and optimization services, offset by in part by lower revenue from our transcription services revenue due to the continued erosion, and the negative impact of the 2017 Malware Incident.

• Enterprise segment revenue decreased by $9.4 million, or 7.7%, primarily due to lower contact center license and services revenue, and lower volume through our legacy inbound and outbound on-demand solutions.

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• Automotive segment revenue increased by $7.3 million, or 11.7%, primarily due to higher revenues from royalties and hosting solutions driven by continued growth in our connected services.

• Imaging segment revenues decreased by $4.1 million, or 7.8%, primarily due to lower revenue from our scanning and print management solutions.

• Other segment revenue decreased by $9.2 million, or 25.8%, primarily due to declines in both SRS and Devices. The decline in SRS was primarily due to the recent market disruptions in India and Brazil. These markets have experienced recent and dramatic disruptions as a result of accelerated change in competition and business models for our SRS mobile operator customers, which has reduced demand for our services. The decline in our Devices business was primarily due to the ongoing consolidation of our handset manufacturer customer base, as well as continued erosion of our penetration of the remaining market.

Six Months EndedMarch 31, 2018 compared to Six Months EndedMarch 31, 2017

• Healthcare segment revenue increased by $29.1 million, or 6.1%, primarily due to higher revenue from Dragon Medical cloud-based solutions and EHR implementation and optimization services, offset by in part by lower revenue from our transcription services revenue due to the continued erosion, and the negative impact of the 2017 Malware Incident.

• Enterprise segment revenue decreased by $4.2 million, or 1.8%, primarily due to lower contact center license and services revenue, and lower volume through our legacy inbound and outbound on-demand solutions.

• Automotive segment revenue increased by $9.8 million, or 8.2%, primarily due to higher revenues from royalties and hosting solutions driven by continued growth in our connected services.

• Imaging segment revenues decreased by $0.5 million, or 0.5%, primarily due to lower revenue from our scanning and print management solutions.

• Other segment revenue decreased by 14.1 million, or 21.3%, primarily due to declines in both of SRS and Devices. The decline in SRS was primarily due to the recent market disruptions in India and Brazil. These markets have experienced recent and dramatic disruptions as a result of accelerated change in competition and business models for our SRS mobile operator customers, which has reduced demand for our services. The decline in our Devices business was primarily due to the ongoing consolidation of our handset manufacturer customer base, as well as continued erosion of our penetration of the remaining market.

Segment Profit

Three Months EndedMarch 31, 2018 compared to Three Months EndedMarch 31, 2017

• Healthcare segment profit increased by $4.1 million, or 4.8%, primarily due to higher segment revenue offset in part by lower gross margin. The lower gross margin was primarily due to margin compression in our medical transcription services and the increase in EHR implementation and optimization services which carried lower margins, offset in part by a favorable shift in revenue mix towards higher margin Dragon Medical cloud-based offerings. As a result, segment profit margin decreased by 1.5 percentage points to 33.4%.

• Enterprise segment profit decreased by $14.6 million, or 36.3%, primarily due to lower segment revenue and lower gross margin. The lower gross margin was primarily a result of lower revenue and relatively fixed overhead costs. As a result, segment profit margin decreased by 10.2 percentage points to 22.8%.

• Automotive segment profit decreased by $0.4 million, or 1.5%, primarily due to lower gross margin and higher R&D expenses, offset in part by higher revenue. The lower gross margin was primarily driven by our investment in automotive technologies and increased professional services headcount for future business needs. The higher R&D expenses was primarily driven by our increased investment in new technologies to support future growth. As a result, segment profit margin decreased by 5.6 percentage points to 41.9%.

• Imaging segment profit decreased by 6.2 million, or 33.6%, primarily due to lower segment revenue and gross margin and higher operating expenses. Gross margin declined as a result of an unfavorable shift in revenue mix from higher margin licensing revenue to lower margin product revenue. Operating expenses increased primarily due to higher sales and marketing and R&D expenses to support new products and solutions. As a result, segment profit margin decreased by 9.8 percentage points to 25.0%.

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• Other segment profit decreased by 6.4 million, or 51.5%. Profit margin decreased by 12.2 percentage points to 22.9%. The declines were primarily due to lower revenues and relatively fixed costs and expenses structure.

Six Months EndedMarch 31, 2018 compared to Six Months EndedMarch 31, 2017

• Healthcare segment profit increased by $2.9 million, or 1.8%, primarily due to higher segment revenue offset in part by lower gross margin. The lower gross margin was primarily due to margin compression in our medical transcription services and the increase in EHR implementation and optimization services which carried lower margins, offset in part by a favorable shift in revenue mix towards higher margin Dragon Medical cloud-based offerings. As a result, segment profit margin decreased by 1.4 percentage points to 32.5%.

• Enterprise segment profit decreased by $6.8 million, or 9.7%, primarily due to lower segment revenue and lower gross margin. The lower gross margin was primarily a result of lower revenue and relatively fixed overhead costs. As a result, segment profit margin decreased by 2.4 percentage points to 27.2%.

• Automotive segment profit decreased by $4.8 million, or 8.5%, primarily due to lower gross margin and higher R&D expenses, offset in part by higher revenue. The lower gross margin was primarily driven by our investment in automotive technologies and increased professional services headcount for future business needs. The higher R&D expenses was primarily driven by our increased investment in new technologies to support future growth. As a result, segment profit margin decreased by 7.3 percentage points to 39.9%.

• Imaging segment profit decreased by $8.2 million, or 22.7%, primarily due to lower segment revenue and gross margin and higher operating expenses. Gross margin declined as a result of an unfavorable shift in revenue mix from higher margin licensing revenue to lower margin product revenue. Operating expenses increased primarily due to higher sales and marketing and R&D expenses to support new products and solutions. As a result, segment profit margin decreased by 7.6 percentage points to 26.7%.

• Other segment profit decreased by 10.9 million, or 53.5%. Profit margin decreased by 12.6% percentage points to 18.2%. The declines were primarily due to lower revenues and relatively fixed costs and expenses structure.

LIQUIDITY AND CAPITAL RESOURCES

Liquidity

We had cash and cash equivalents and marketable securities of $648.7 million as of March 31, 2018, a decrease of $225.4 million from $874.1 million as of September 30, 2017. Our working capital, defined as total current assets less total current liabilities, was $399.7 million as of March 31, 2018, compared to $216.4 million as of September 30, 2017. Additionally, we had $238.4 million available for borrowing under our revolving credit facility as of March 31, 2018. We believe that our existing sources of liquidity are sufficient to support our operating needs, capital requirements and any debt service requirements for the next twelve months.

Cash and cash equivalents and marketable securities held by our international operations totaled $131.0 million as of March 31, 2018 and $148.6 million as of September 30, 2017. As more fully described in Note 14 to the accompanying condensed consolidated financial statements, as a result of the enactment of the Tax Cuts and Jobs Act ("TCJA"), we recorded a provisional amount of one-time repatriation tax of approximately $2 million on foreign cash and earnings as of March 31, 2018. The actual impact of the TCJA may differ materially from our estimate due to changes in our interpretations and assumptions, additional guidance to be issued, and actions we may take as a result of the TCJA. We have not changed our indefinite reinvestment assertion related to foreign cash and earnings.

In April 2018, we completed an acquisition in our Automotive segment for a total cash consideration of approximately $82 million, net of cash acquired. We are currently in the process of determining the total consideration transferred and the fair values of assets acquired and liabilities assumed, but do not expect this acquisition to have a material impact on our condensed consolidated financial statements.

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Cash Provided by Operating Activities

Cash provided by operating activities for the six months endedMarch 31, 2018, was $195.4 million, a decrease of $55.0 million from cash provided by operating activities of $250.3 million for the six months endedMarch 31, 2017. The decrease was primarily due to:

• A decrease of $59.6 million due to lower net income, excluding non-cash adjustments;

• A decrease of $7.7 million due to unfavorable changes in working capital, primarily due to the timing of billing and cash payments, offset in part by,

• An increase of $12.3 million from changes in deferred revenue. Deferred revenue had a positive effect of $85.3 million on operating cash flows for the six months endedMarch 31, 2018, as compared to $73.0 million for the six months endedMarch 31, 2017, primarily driven by continued growth of our Automotive connected services and Healthcare bundled offerings.

Cash Provided by (Used in) Investing Activities

Cash provided by investing activities for the six months endedMarch 31, 2018, was $64.2 million, an increase of $240.2 million from cash used in investing activities of $176.0 million for the six months endedMarch 31, 2017. The increase was primarily due to:

• A net increase of $186.5 million from the sale and purchase of marketable securities and other investments; and

• A decrease of $60.2 million for business and asset acquisitions.

Cash (Used in) Provided by Financing Activities

Cash used in financing activities for the six months endedMarch 31, 2018, was $383.4 million, an increase of $454.3 million from cash provided by financing activities of $70.9 million for the six months endedMarch 31, 2017. The net increase was primarily due to:

• A decrease in cash inflows of $839.0 million from new debt issuance. During the six months endedMarch 31, 2017, the cash inflows from debt activities includes $494.6 million net proceeds from the issuance of 5.625% Senior Notes due 2026; and $344.3 million net proceeds from the issuance of our 1.25% 2025 Convertible Debentures;

• An increase in cash outflows of $16.9 million related to acquisition payments with extended payment terms, offset in part by,

• A decrease in cash outflows of $302.9 million from the redemption and repayment of debt. During the six months endedMarch 31, 2018 holders of approximately $331.2 million in aggregate principal amount of the 2.75% 2031 Debentures exercised their right to require us to repurchase such debentures. During the six months endedMarch 31, 2017, we made repayments of $616.7 million for the redemption of our 2020 Senior Notes and $17.9 million for the redemption of our 2031 Convertible Debentures; and

• A decrease in cash outflows of $99.1 million related to share repurchases. During the six months ended March 31, 2017, we repurchased 5.8 million shares of our common stock for $99.1 million under our share repurchase program.

Debt

For a detailed description of the terms and restrictions of the debt and revolving credit facility, see Note 10 to the accompanying condensed consolidated financial statements.

Share Repurchase Program

On April 29, 2013, our Board of Directors approved a share repurchase program for up to $500.0 million. On April 29, 2015, our Board of Directors approved an additional $500.0 million under our share repurchase program. Under the terms of the share repurchase program, we have the ability to repurchase shares 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.

There were no share repurchases for the six months endedMarch 31, 2018. For the six months endedMarch 31, 2017, we repurchased 5.8 million shares of our common stock for $99.1 million under the program. Since the commencement of the program, we have repurchased an aggregate of 46.5 million shares for $806.6 million. The amount paid in excess of par value is recognized

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in additional paid in capital. Shares were retired upon repurchase. As of March 31, 2018, approximately $193.4 million remained available for future repurchases under the program.

Off-Balance Sheet Arrangements, Contractual Obligations

Contractual Obligations

The following table outlines our contractual payment obligations (dollars in millions):

	Contractual Payments Due in Fiscal Year
Contractual Obligations	Total		2018		2019 and 2020		2021 and 2022		Thereafter
Convertible debentures(1)	$	1,337.0	$	—	$	—	$	310.5	$	1,026.5
Senior notes	1,250.0		—		450.0		—		800.0
Interest payable on long-term debt(2)	518.3		43.4		173.4		122.4		179.1
Letters of credit(3)	4.1		3.4		0.7		—		—
Lease obligations and other liabilities:
Operating leases	159.4		17.5		40.2		27.4		74.3
Operating leases under restructuring(4)	62.7		5.1		17.9		15.2		24.5
Purchase commitments(5)	32.2		7.6		13.8		10.8		—
Total contractual cash obligations	$	3,363.7	$	77.0	$	696.0	$	486.3	$	2,104.4

⁽¹⁾  Pursuant to the terms of each convertible instrument, holders have the right to redeem the debt on specific dates prior to maturity. The repayment schedule above assumes that payment is due on the next redemption date after March 31, 2018.

⁽²⁾  Interest per annum is due and payable semi-annually and is determined based on the outstanding principal as of March 31, 2018, the stated interest rate of each debt instrument and the assumed redemption dates discussed above.

⁽³⁾  Letters of Credit are in place primarily to secure future operating lease payments.

⁽⁴⁾  Obligations include contractual lease commitments related to facilities that were part of restructuring plans. As of March 31, 2018, we have subleased certain of the facilities with total sublease income of $53.3 million through fiscal year 2025.

⁽⁵⁾  Purchase commitments include non-cancelable purchase commitments for property and equipment, inventory, and services in the normal course of business. These amounts also include arrangements that require a minimum purchase commitment by us.

Total unrecognized tax benefits as of March 31, 2018 were $31.9 million. We do not expect any significant change in the amount of unrecognized tax benefits within the next twelve months.

Contingent Liabilities and Commitments

Certain acquisition payments to selling shareholders were contingent upon the achievement of pre-determined performance target over a period of time after the acquisition. Such contingent payments were recorded at estimated fair values upon the acquisition and re-measured in subsequent reporting periods. As of March 31, 2018, the maximum amount of payments to be made based on the agreements was $19.6 million if the specific performance objectives are achieved. In addition, certain deferred compensation payments to selling shareholders contingent upon their continued employment after the acquisition was recorded as compensation expense over the requisite service period. As of March 31, 2018, total deferred compensation to be paid out upon the conclusion of requisite service periods was $26.9 million.

Off-Balance Sheet Arrangements

As of March 31, 2018, there were no off-balance sheet arrangements that may have a material impact on the condensed consolidated financial statements.

CRITICAL ACCOUNTING POLICIES

Our critical accounting policies are included in the “Critical Accounting Policies” section of “Management’s Discussion and Analysis of Financial Condition and Results of Operations” included in the Form 10-K for the fiscal year ended September 30, 2017. There has been no material change to our critical accounting policies since September 30, 2017. See Note 4 to the accompanying condensed consolidated financial statements for the critical estimates related to our interim goodwill impairment analysis.

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RECENTLY ADOPTED AND ISSUED ACCOUNTING STANDARDS

See Note 2 to the accompanying condensed consolidated financial statements for a discussion of the recently adopted and issued accounting standards.

Item 3. Quantitative and Qualitative Disclosures about Market Risk

We are exposed to market risk from changes in foreign currency exchange rates, interest rates and equity prices which could affect operating results, financial position and cash flows. We manage our exposure to these market risks through our regular operating and financing activities and, when appropriate, through the use of derivative financial instruments.

Exchange Rate Sensitivity

We are exposed to changes in foreign currency exchange rates. Any foreign currency transaction, defined as a transaction denominated in a currency other than the local functional currency, will be reported in the functional currency at the applicable exchange rate in effect at the time of the transaction. A change in the value of the functional currency compared to the foreign currency of the transaction will have either a positive or negative impact on our financial position and results of operations.

Assets and liabilities of our foreign entities are translated into U.S. dollars at exchange rates in effect at the balance sheet date and income and expense items are translated at average rates for the applicable period. Therefore, the change in the value of the U.S. dollar compared to foreign currencies may impact our financial position and results of operations. Historically, our primary exposure has related to transactions denominated in the euro, British pound, Brazilian real, Canadian dollar, Japanese yen, Indian rupee and Hungarian forint.

Periodically, we enter into forward exchange contracts to hedge against foreign exchange rate fluctuations. As of March 31, 2018, we had not designated any contracts as fair value or cash flow hedges. The contracts are not designated as cash flow hedges and generally are for periods less than 90 days. As of March 31, 2018, the notional contract amount of outstanding foreign currency exchange contracts was $78.0 million.

Interest Rate Sensitivity

We are exposed to interest rate risk as a result of our cash and cash equivalents and marketable securities.

At March 31, 2018, we held approximately $648.7 million of cash and cash equivalents and marketable securities primarily consisting of cash, money-market funds, bank deposits and a separately managed investment portfolio. Assuming a one percentage point change in interest rates, our interest income on our investments classified as cash and cash equivalents and marketable securities would change by approximately $6.4 million per annum, based on the balances as of March 31, 2018.

At March 31, 2018, we had no outstanding debt subject to variable interest rates.

Convertible Debentures

The fair values of our convertible debentures are dependent on the price and volatility of our common stock as well as movements in interest rates. The fair market values of these debentures will generally increase as the market price of our common stock increases and will decrease as the market price of our common stock decreases. The fair market values of these debentures will generally increase as interest rates fall and decrease as interest rates rise. The market value and interest rate changes affect the fair market values of these debentures, but do not impact our financial position, results of operations or cash flows due to the fixed nature of the debt obligations. However, increases in the value of our common stock above the stated trigger price for each issuance for a specified period of time may provide the holders of these debentures the right to convert each bond using a conversion ratio and payment method as defined in the debenture agreement.

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The following table summarizes the fair value and conversion value of our convertible debentures, and the estimated increase in fair value and conversion value with a hypothetical 10% increase in the stock price of $15.75 as of March 31, 2018 (dollars in millions):

	March 31, 2018
	Fair value		Conversion value		Increase to fair value		Increase to conversion value
2.75% 2031 Debentures	$	45.7	$	22.7	$	0.1	$	2.3
1.5% 2035 Debentures	$	269.1	$	178.7	$	10.7	$	17.9
1.0% 2035 Debentures	$	643.4	$	391.4	$	21.3	$	39.1
1.25% 2025 Debentures	$	346.7	$	248.1	$	18.2	$	24.8

Item 4. Controls and Procedures

Evaluation of Disclosure Controls and Procedures

Our management is responsible for establishing and maintaining a system of disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934 (the “Exchange Act”)) designed to ensure that information we are required to disclose in the reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission’s rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by an issuer in the reports that it files or submits under the Exchange Act is accumulated and communicated to the issuer’s management, including its principal executive officer or officers and principal financial officer or officers, or persons performing similar functions, as appropriate to allow timely decisions regarding required disclosure.

We have evaluated the effectiveness of the design and operation of our disclosure controls and procedures under the supervision of, and with the participation of, management, including our Chief Executive Officer and Chief Financial Officer, as of the end of the period covered by this report. Based on that evaluation, our Chief Executive Officer and Chief Financial Officer have concluded that our disclosure controls and procedures are effective to meet the requirements of Rules 13a-15(f) and 15d-15(f) under the Exchange Act.

Changes in Internal Control Over Financial Reporting

There were no material changes to our internal controls over financial reporting as defined in the Exchange Act Rules 13a-15(f) and 15d-15(f) identified in connection with the evaluation that occurred during the fiscal quarter covered by this Quarterly Report on Form 10-Q that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Part II. Other Information

Item 1.Legal Proceedings

This information is included in Note 15, Commitments and Contingencies, in the accompanying notes to unaudited consolidated financial statements and is incorporated herein by reference from Item 1 of Part I.

Item 1A.Risk Factors

You should carefully consider the risks described below when evaluating our company and when deciding whether to invest in our company. The risks and uncertainties described below are not the only ones we face. Additional risks and uncertainties not presently known to us or that we do not currently believe are important to an investor may also harm our business operations. If any of the events, contingencies, circumstances or conditions described below actually occurs, our business, financial condition or our results of operations could be seriously harmed. If that happens, the trading price of our common stock could decline, and you may lose part or all of the value of any of our shares held by you.

Risks Related to Our Business

The markets in which we operate are highly competitive and rapidly changing and we may be unable to compete successfully.

There are a number of companies that develop or may develop products that compete in our targeted markets. The markets for our products and services are characterized by intense competition, evolving industry and regulatory standards, emerging business and distribution models, disruptive software and hardware technology developments, short product and service life cycles, price

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sensitivity on the part of customers, and frequent new product introductions, including alternatives for certain of our products that offer limited functionality at significantly lower costs or free of charge. Within voice recognition and natural language understanding, we compete primarily with Amazon, Google, as well as other smaller providers. In our Healthcare business we compete primarily with M*Modal, Optum, 3M and other smaller providers. In our Automotive business we compete, or may in the future compete, with Amazon, Google, iFlyTek and Microsoft as well as with other, smaller vendors particularly in China. In our Imaging business we compete primarily with ABBYY and Adobe. Also, some of our partners such as Avaya, Canon, Cisco, and Genesys develop and market products that might be considered substitutes for our solutions. In addition, a number of smaller companies in voice recognition, natural language understanding, text input and imaging produce technologies or products that are in some markets competitive with our solutions. Current and potential competitors have established, or may establish, cooperative relationships among themselves or with third parties to increase the ability of their technologies to address the needs of our prospective customers. Furthermore, there has been a trend toward industry consolidation in our markets for several years. We expect this trend to continue as companies attempt to strengthen or hold their market positions in an evolving industry and as companies are acquired or are unable to continue operations.

The competition in these markets could adversely affect our operating results by reducing the volume of the products we license or the prices we can charge. Some of our current or potential competitors, such as 3M, Adobe, Amazon, Google and Microsoft, have significantly greater financial, technical and marketing resources than we do. These competitors may be able to respond more rapidly than we can to new or emerging technologies or changes in customer requirements. They may also devote greater resources to the development, promotion and sale of their products than we do, and in certain cases may be able to include or combine their competitive products or technologies with other of their products or technologies in a manner whereby the competitive functionality is available at lower cost or free of charge within the larger offering. To the extent they do so, market acceptance and penetration of our products, and therefore our revenue and bookings, may be adversely affected. Our success will depend substantially upon our ability to enhance our products and technologies and to develop and introduce, on a timely and cost-effective basis, new products and features that meet changing customer requirements and incorporate technological enhancements. If we are unable to develop new products and enhance functionalities or technologies to adapt to these changes, or if we are unable to realize synergies among our acquired products and technologies, our business will suffer.

Our operating results may fluctuate significantly from period to period, and this may cause our stock price to decline.

Our revenue, bookings and operating results have fluctuated materially in the past and are expected to continue to fluctuate in the future. Given these fluctuations, we believe that quarter to quarter comparisons of revenue, bookings and operating results are not necessarily meaningful nor an accurate indicator of our future performance. These fluctuations may cause our results of operations to not meet the expectations of securities analysts or investors. If this occurs, the price of our stock would likely decline. Factors that contribute to fluctuations in operating results include:

• volume, timing and fulfillment of customer orders and receipt of royalty reports;

• slowing sales by our channel partners to their customers;

• customers delaying their purchasing decisions in anticipation of new versions of our products;

• contractual counterparties are unable to, or do not, meet their contractual commitments to us;

• introduction of new products by us or our competitors;

• cybersecurity or data breaches perpetrated by hackers or other third parties;

• seasonality in purchasing patterns of our customers;

• reduction in the prices of our products in response to competition, market conditions or contractual obligations;

• returns and allowance charges in excess of accrued amounts;

• timing of significant marketing and sales promotions;

• impairment of goodwill or intangible assets;

• the pace of the transition to an on-demand and transactional revenue model;

• delayed realization of synergies resulting from our acquisitions;

• accounts receivable that are not collectible and write-offs of excess or obsolete inventory;

• increased expenditures incurred pursuing new product or market opportunities;

• higher than anticipated costs related to fixed-price contracts with our customers; and

• general economic trends as they affect the customer bases into which we sell.

Due to the foregoing factors, among others, our revenue, bookings and operating results are difficult to forecast. Our expense levels are based in significant part on our expectations of future revenue, and we may not be able to reduce our expenses quickly to respond to near-term shortfalls in projected revenue. Therefore, our failure to meet revenue expectations would seriously harm our operating results, financial condition and cash flows.

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A significant portion of our revenue and bookings are derived, and a significant portion of our research and development activities are based, outside the United States. Our results could be harmed by economic, political, regulatory, foreign currency fluctuations and other risks associated with these international regions.

Because we operate worldwide, our business is subject to risks associated with doing business internationally. We anticipate that revenue and bookings from international operations could increase in the future. Most of our international revenue and bookings are generated by sales in Europe and Asia. In addition, some of our products are developed outside the United States and we have a large number of employees in India that provide development and transcription services. We also have a large number of employees in Canada, Germany and the United Kingdom that provide professional services. A significant portion of the development of our voice recognition and natural language understanding solutions is conducted in Canada and Germany, and a significant portion of our imaging research and development is conducted in Hungary and Canada. We also have significant research and development resources in Austria, Belgium, China, Italy, and the United Kingdom. In addition, we are exposed to changes in foreign currencies including the euro, British pound, Brazilian real, Canadian dollar, Japanese yen, Indian rupee and Hungarian forint. Changes in the value of foreign currencies relative to the value of the U.S. dollar could adversely affect future revenue and operating results. Accordingly, our future results could be harmed by a variety of factors associated with international sales and operations, including:

• the impact on local and global economies of the United Kingdom leaving the European Union;

• changes in foreign currency exchange rates or the lack of ability to hedge certain foreign currencies;

• changes in a specific country's or region's economic conditions;

• compliance with laws and regulations in many countries and any subsequent changes in such laws and regulations;

• geopolitical turmoil, including terrorism and war;

• trade protection measures, including tariffs and import/export controls, imposed by the United States and/or by other countries such as China;

• changing and import or export licensing requirements, particularly for our voice biometrics products;

• changing data privacy regulations and customer requirements to locate data centers in certain jurisdictions;

• adverse political and economic conditions, particularly those negatively affecting the trade relationship between the U.S. and China;

• restrictions on cross-border investment, including enhanced oversight by the Committee on Foreign Investment in the United States (CFIUS) and substantial restrictions on investment from China;

• changes in applicable tax laws;

• difficulties in staffing and managing operations in multiple locations in many countries;

• longer payment cycles of foreign customers and timing of collections in foreign jurisdictions; and

• less effective protection of intellectual property than in the United States.

We recently hired a new Chief Executive Officer. If we encounter difficulties in the transition, our business could be negatively impacted.

Mark D. Benjamin became our Chief Executive Officer and a member of our Board of Directors late April 2018. Our future success will partly depend upon Mr. Benjamin’s ability, along with the ability of other senior management and other key employees, to effectively implement our business strategies. In addition, Mr. Benjamin may pursue changes in our strategy or business focus. Mr. Benjamin may require transition time to fully understand all aspects of our business as would be typical with any executive transition. If we have failures in any aspects of this transition, or new strategies implemented by our management team are not successful, our business could be harmed.

If we are unable to attract and retain key personnel, our business could be harmed.

If any of our key employees were to leave, we could face substantial difficulty in hiring qualified successors and could experience a loss in productivity while any successor obtains the necessary training and experience. For example, we have recently undergone a chief executive officer transition with the retirement of Mr. Ricci as our Chief Executive Officer in March 2018 and the appointment of Mr. Benjamin as our new Chief Executive Officer in April 2018. In addition, two other members of our senior management team have recently left the company. Although we have arrangements with some of our executive officers designed to promote retention, our employment relationships are generally at-will and we have had key employees leave in the past. We cannot assure you that one or more key employees will not leave in the future. We intend to continue to hire additional highly qualified personnel, including research and development and operational personnel, but may not be able to attract, assimilate or retain qualified personnel in the future. Any failure to attract, integrate, motivate and retain these employees could harm our business.

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In response to our changing needs and input from our investors, we recently added a number of new directors to our Board of Directors and expect to add additional directors over the balance of fiscal year 2018. If the transition to these new directors is not effective, our business could be harmed.

In addition to his appointment as Chief Executive Officer, Mr. Benjamin was appointed to our Board of Directors. With this addition, three of the eight members of our Board of Directors have joined since December 2017. We expect to add additional members to our Board of Directors in the coming months and to reconstitute the membership of Board Committees as new directors are added to take advantage of the experience the new members bring to our Board of Directors. There can be no assurances that the new Board of Directors or its committees will function effectively and that there will not be any adverse effects on the business as a result of the significant changes on our Board of Directors.

We experienced a significant malware incident in the third quarter of fiscal year 2017, which had and continues to have a significant impact on our future results of operations and financial condition.

On June 27, 2017, Nuance was a victim of the global NotPetya malware incident (the “2017 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. Our revenue and our operating results for fiscal year 2017 were negatively impacted by the 2017 Malware Incident. For fiscal year 2017, we estimate that we lost approximately $68.0 million in revenues, primarily in our Healthcare segment, due to the service disruption and the reserves we established for customer refund credits. Additionally, we incurred incremental costs of approximately $24.0 million for fiscal year 2017 as a result of our remediation and restoration efforts, as well as incremental amortization expenses. Although the direct effects of the 2017 Malware Incident were remediated during fiscal year 2017, the 2017 Malware Incident had a continued effect on our results of operations in the first and second quarters of fiscal year 2018, and our outlook for the remainder of fiscal year 2018 reflects both the residual effects of the incident and the additional resources we will need to invest on an ongoing basis to continuously enhance information security.

Cybersecurity and data privacy incidents or breaches may damage client relations and inhibit our growth.

The confidentiality and security of our information, and that of third parties, is critical to our business. Our services involve the transmission, use, and storage of customers’ and their customer’s confidential information. We were the victim of a cybercrime in the past, and future cybersecurity or data privacy incidents could have a material adverse effect on our results of operations and financial condition. While we maintain a broad array of information security and privacy measures, policies and practices, our networks may be breached through a variety of means, resulting in someone obtaining unauthorized access to our information, to information of our customers or their customers, or to our intellectual property; disabling or degrading service; or sabotaging systems or information. In addition, hardware, software, or applications we develop or procure from third parties may contain defects in design or manufacture or other problems that could unexpectedly compromise information security. Unauthorized parties may also attempt to gain access to our systems or facilities, or those of third parties with whom we do business, through fraud or other forms of deceiving our employees, contractors, and vendors. Because the techniques used to obtain unauthorized access, or to sabotage systems, change frequently and generally are not recognized until launched against a target, we may be unable to anticipate these techniques or to implement adequate preventative measures. We will continue to incur significant costs to continuously enhance our information security measures to defend against the threat of cybercrime. Any cybersecurity or data privacy incident or breach may result in:

• loss of revenue resulting from the operational disruption;

• loss of revenue or increased bad debt expense due to the inability to invoice properly or to customer dissatisfaction resulting in collection issues;

• loss of revenue due to loss of customers;

• material remediation costs to restore systems;

• material investments in new or enhanced systems in order to enhance our information security posture;

• cost of incentives offered to customers to restore confidence and maintain business relationships;

• reputational damage resulting in the failure to retain or attract customers;

• costs associated with potential litigation or governmental investigations;

• costs associated with any required notices of a data breach;

• costs associated with the potential loss of critical business data; and

• other consequences of which we are not currently aware but will discover through the remediation process.

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Our business is subject to a variety of domestic and international laws, rules, policies and other obligations regarding data protection.

We are subject to a complex array of federal, state and international laws relating to the collection, use, retention, disclosure, security and transfer of personally identifiable information and personal health information, with additional laws applicable in some jurisdictions where the information is collected from children. In many cases, these laws apply not only to transfers between unrelated third-parties but also to transfers between us and our subsidiaries. Many jurisdictions have passed laws in this area, and other jurisdictions are considering imposing additional restrictions. The European Commission adopted the European General Data Protection Regulation (the “GDPR”), which will be in effect as of May 25, 2018. China adopted a new cybersecurity law as of June 2017, and there is an increase in regulation of biometric data globally, which may include voiceprints. Complying with the GDPR and other emerging and changing requirements may cause us to incur substantial costs and may require us to change our business practices. Noncompliance could result in penalties or significant legal liability, and could affect our ability to retain and attract customers.

Any failure by us, our customers, suppliers or other parties with whom we do business to comply with our privacy policy or with federal, state or international privacy-related or data protection laws and regulations could result in proceedings against us by governmental entities or others. Any alleged or actual failure to comply with applicable privacy laws and regulations may:

• cause our customers to lose confidence in our solutions;

• harm our reputation;

• expose us to litigation, regulatory investigations and to resulting liabilities including reimbursement of customer costs, damages penalties or fines imposed by regulatory agencies; and

• require us to incur significant expenses for remediation.

Interruptions or delays in services could impair the delivery of our services and harm our business

Because our services are complex and incorporate a variety of hardware and proprietary and third-party software, our services may have errors or defects that could result in unanticipated downtime for our customers and harm to our reputation and our business. We have from time to time, found defects in our services, and new errors in our services may be detected in the future. As we acquire companies, we may encounter difficulty in incorporating the acquired services or technologies into our services. Any damage to, or failure of, the systems that serve our customers in whole or in part, could result in interruptions in our service. Interruptions in our service may reduce our revenue, cause us to issue credits or pay service-level agreement penalties, cause customers to terminate their on-demand services, and adversely affect our renewal rates and our ability to attract new customers.

Interruptions or delays in service from data center hosting facilities could impair the delivery of our services and harm our business.

We currently serve our customers from data center hosting facilities we directly manage and from third-party public cloud facilities. Any damage to, or failure of, the systems that serve our customers in whole or in part, could result in interruptions in our service. Interruptions in our service may reduce our revenue, cause us to issue credits or pay service level agreement penalties, cause customers to terminate their on-demand services and adversely affect our renewal rates and our ability to attract new customers.

As part of our business strategy, we acquire other businesses and technologies, and our ability to realize the anticipated benefits of our acquisitions will depend on successfully integrating the acquired businesses.

As part of our business strategy, we have in the past acquired, and expect to continue to acquire, other businesses and technologies. Our prior acquisitions required, and our recently completed acquisitions continue to require, substantial integration and management efforts, and we expect future acquisitions to require similar efforts. Successfully realizing the benefits of acquisitions involves a number of risks, including:

• difficulty in transitioning and integrating the operations and personnel of the acquired businesses;

• potential disruption of our ongoing business and distraction of management;

• difficulty in incorporating acquired products and technologies into our products and technologies;

• potential difficulties in completing projects associated with in-process research and development;

• unanticipated expenses and delays in completing acquired development projects and technology integration and upgrades;

• challenges associated with managing additional, geographically remote businesses;

• impairment of relationships with partners and customers;

• assumption of unknown material liabilities of acquired companies;

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• accurate projection of revenue and bookings plans of the acquired entity in the due diligence process;

• customers delaying purchases of our products pending resolution of product integration between our existing and our newly acquired products;

• entering markets or types of businesses in which we have limited experience; and

• potential loss of key employees of the acquired business.

As a result of these and other risks, if we are unable to successfully integrate acquired businesses, we may not realize the anticipated benefits from our acquisitions. Any failure to achieve these benefits or failure to successfully integrate acquired businesses and technologies could seriously harm our business.

Charges to earnings as a result of our acquisitions may adversely affect our operating results in the foreseeable future, which could have a material and adverse effect on the market value of our common stock.

Under accounting principles generally accepted in the United States, we record the market value of our common stock and other forms of consideration issued in connection with an acquisition as the cost of acquiring the company or business. We allocate that cost to the individual assets acquired and liabilities assumed, including various identifiable intangible assets such as acquired technology, acquired trade names and acquired customer relationships, based on their respective fair values. Our estimates of fair value are based upon assumptions believed to be reasonable but which are inherently uncertain. After we complete an acquisition, the following factors could result in material charges and may adversely affect our operating results and cash flows:

• costs incurred to combine the operations of businesses we acquire, such as transitional employee expenses and employee retention, redeployment or relocation expenses;

• impairment of goodwill or intangible assets;

• amortization of intangible assets acquired;

• a reduction in the useful lives of intangible assets acquired;

• identification of or changes to assumed contingent liabilities, both income tax and non-income tax related, after our final determination of the amounts for these contingencies or the conclusion of the measurement period (generally up to one year from the acquisition date), whichever comes first;

• charges to our operating results to eliminate certain duplicative pre-merger activities, to restructure our operations or to reduce our cost structure;

• charges to our operating results arising from expenses incurred to effect the acquisition; and

• charges to our operating results due to the expensing of stock awards assumed in acquisitions.

Intangible assets are generally amortized over three to ten years. Goodwill is not subject to amortization but is subject to an impairment analysis, at least annually, which may result in an impairment charge if the carrying value exceeds its implied fair value. As of March 31, 2018, we had identified intangible assets of approximately $596.1 million, net of accumulated amortization, and goodwill of approximately $3.5 billion, net of accumulated impairment charges. In addition, purchase accounting limits our ability to recognize certain revenue that otherwise would have been recognized by the acquired company as an independent business. As a result, the combined company may delay revenue recognition or recognize less revenue than we and the acquired company would have recognized as independent companies.

We have grown, and may continue to grow, through acquisitions, which could dilute our existing stockholders and/or increase our debt levels.

In connection with past acquisitions, we have in the past issued a substantial number of shares of our common stock as transaction consideration, including contingent consideration, and also incurred significant debt to finance the cash consideration used for our acquisitions. We may continue to issue equity securities for future acquisitions, which would dilute existing stockholders, perhaps significantly, depending on the terms of such acquisitions. We may also incur additional debt in connection with future acquisitions, which, if available at all, may place additional restrictions on our ability to operate our business.

Our strategy to increase cloud services, term licensing and transaction-based recurring revenue may adversely affect our near-term revenue growth and results of operations.

Our ongoing shift from a perpetual software license model to cloud services, term licensing and transaction-based recurring revenue models will create a recurring revenue stream that is more predictable. The transition, however, creates risks related to the timing of revenue recognition. We also incur certain expenses associated with the infrastructures and selling efforts of our hosting offerings in advance of our ability to recognize the revenues associated with these offerings, which may adversely affect our near-term reported revenues, results of operations and cash flows. A decline in renewals of recurring revenue offerings in any period may

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not be immediately reflected in our results for that period but may result in a decline in our revenue and results of operations in future quarters.

We have a history of operating losses, and may incur losses in the future, which may require us to raise additional capital on unfavorable terms.

We reported net losses of $151.0 million, $12.5 million and $115.0 million in fiscal years 2017, 2016 and 2015, respectively, and a net loss of $164.1 million for the second fiscal quarter of fiscal year 2018. We had a total accumulated deficit of $691.7 million as of March 31, 2018. If we are unable to return to profitability, the market price for our stock may decline, perhaps substantially. We cannot assure you that our revenue or bookings will grow or that we will return to profitability in the future. If we do not achieve profitability, we may be required to raise additional capital to maintain or grow our operations. Additional capital, if available at all, may be highly dilutive to existing investors or contain other unfavorable terms, such as a high interest rate and restrictive covenants.

If our efforts to execute our formal transformation program are not successful, our business could be harmed.

We have been executing a formal transformation program to focus our product investments on our growth opportunities, increase our operating efficiencies, reduce costs, and further enhance shareholder value through share buybacks. There can be no assurance that we will be successful in executing this transformation program or be able to fully realize the anticipated benefits of this program, within the expected time frames, or at all. Additionally, if we are not successful in strategically aligning our product portfolio, we may not be able to achieve the anticipated benefits of this program. A failure to successfully reduce and re-align our costs could have an adverse effect on our revenue and on our expenses and profitability. As a result, our financial results may not meet our or the expectations of securities analysts or investors in the future and our business could be harmed.

Tax matters may cause significant variability in our financial results.

Our businesses are subject to income taxation in the United States, as well as in many tax jurisdictions throughout the world. Tax rates in these jurisdictions may be subject to significant change. If our effective tax rate increases, our operating results and cash flow could be adversely affected. Our effective income tax rate can vary significantly between periods due to a number of complex factors including:

• projected levels of taxable income;

• pre-tax income being lower than anticipated in countries with lower statutory rates or higher than anticipated in countries with higher statutory rates;

• increases or decreases to valuation allowances recorded against deferred tax assets;

• tax audits conducted and settled by various tax authorities;

• adjustments to income taxes upon finalization of income tax returns;

• the ability to claim foreign tax credits;

• the repatriation of non-U.S. earnings for which we have not previously provided for income taxes; and

• changes in tax laws and their interpretations in countries in which we are subject to taxation.

During 2014, Ireland enacted changes to the taxation of certain Irish incorporated companies effective as of January 2021. On October 5, 2015, the Organization for Economic Cooperation and Development released the Final Reports for its Action Plan on Base Erosion and Profit Shifting. The implementation of one or more of these reports in jurisdictions in which we operate, together with the 2014 enactment by Ireland, could result in an increase to our effective tax rate. In addition, in December 2017, the United States enacted the Tax Cut and Jobs Act of 2017. We expect this to have a material impact on our GAAP tax financial results.  We have determined that our GAAP tax provision for the first quarter of fiscal 2018 was benefited by approximately $80 million driven by a revaluation of certain deferred tax assets and liabilities using the updated federal tax rates, offset in part by a one-time repatriation tax on non-US cash and earnings. Future changes in U.S. and non-U.S. tax laws and regulations could have a material effect on our results of operations in the periods in which such laws and regulations become effective as well as in future periods.

The failure to successfully maintain the adequacy of our system of internal control over financial reporting could have a material adverse impact on our ability to report our financial results in an accurate and timely manner.

Under the Sarbanes-Oxley Act of 2002, we were required to develop and are required to maintain an effective system of disclosure controls and internal control over financial reporting to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements. In addition, our management is required to assess and certify the adequacy of our controls on a quarterly basis, and our independent auditors must attest and report on the effectiveness of our internal control over financial reporting on an annual basis. Any failure in the effectiveness of our system of internal control over financial reporting

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could have a material adverse impact on our ability to report our financial statements in an accurate and timely manner. Inaccurate and/or untimely financial statements could subject us to regulatory actions, civil or criminal penalties, shareholder litigation, or loss of customer confidence, which could result in an adverse reaction in the financial marketplace and ultimately could negatively impact our stock price due to a loss of investor confidence in the reliability of our financial statements.

Impairment of our intangible assets could result in significant charges that would adversely impact our future operating results.

We have significant intangible assets, including goodwill and other intangible assets, which are susceptible to valuation adjustments as a result of changes in various factors or conditions. The most significant intangible assets are customer relationships, patents and core technology, completed technology and trademarks. Customer relationships are amortized on an accelerated basis based upon the pattern in which the economic benefits of customer relationships are being utilized. Other identifiable intangible assets are amortized on a straight-line basis over their estimated useful lives. We assess the potential impairment of intangible assets on an annual basis, as well as whenever events or changes in circumstances indicate that the carrying value may not be recoverable. Factors that could trigger an impairment of such assets include the following:

• significant underperformance relative to historical or projected future operating results;

• significant changes in the manner of or use of the acquired assets or the strategy for our overall business;

• significant negative industry or economic trends;

• significant decline in our stock price for a sustained period;

• changes in our organization or management reporting structure that could result in additional reporting units, which may require alternative methods of estimating fair values or greater disaggregation or aggregation in our analysis by reporting unit; and

• our market capitalization declining to below net book value.

For example, during the second quarter of fiscal year 2018, we reorganized our Mobile business into three discrete lines of business. In connection with this reorganization, and with the review of goodwill and indefinite-lived intangible assets for impairment during the second quarter of fiscal year 2018 that was triggered by recent financial results and rapidly changing business conditions for our Subscriber Revenue Services (“SRS”), we recorded a total of $137.9 million of goodwill impairment charge related to our Devices business and SRS for the second quarter of fiscal 2018. For more information, please see Note 4 of the accompanying condensed consolidated financial statements. Future adverse changes in these or other unforeseeable factors could result in an impairment charge that would impact our results of operations and financial position in the reporting period identified.

Our sales to government clients subject us to risks, including early termination, audits, investigations, sanctions and penalties.

We derive a portion of our revenues and bookings from contracts with the United States government, as well as various state and local governments, and their respective agencies. Government contracts are generally subject to oversight, including audits and investigations which could identify violations of these agreements. Government contract violations could result in a range of consequences including, but not limited to, contract price adjustments, civil and criminal penalties, contract termination, forfeiture of profit and/or suspension of payment, and suspension or debarment from future government contracts. We could also suffer serious harm to our reputation if we were found to have violated the terms of our government contracts.

Risks Related to Our Intellectual Property and Technology

Third parties have claimed and may claim in the future that we are infringing their intellectual property, and we could be exposed to significant litigation or licensing expenses or be prevented from selling our products if such claims are successful.

From time to time, we are subject to claims and law actions alleging that we or our customers may be infringing or contributing to the infringement of the intellectual property rights of others. We may be unaware of intellectual property rights of others that may cover some of our technologies and products. If it appears necessary or desirable, we may seek licenses for these intellectual property rights. However, we may not be able to obtain licenses from some or all claimants, the terms of any offered licenses may not be acceptable to us, and we may not be able to resolve disputes without litigation. Any litigation regarding intellectual property could be costly and time-consuming and could divert the attention of our management and key personnel from our business operations. Intellectual property disputes could subject us to significant liabilities, require us to enter into royalty and licensing arrangements on unfavorable terms, prevent us from manufacturing or licensing certain of our products, cause severe disruptions to our operations or the markets in which we compete, or require us to satisfy indemnification commitments with our customers including contractual provisions under various arrangements. Any of these could seriously harm our business.

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Unauthorized use of our proprietary technology and intellectual property could adversely affect our business and results of operations.

Our success and competitive position depend in large part on our ability to obtain and maintain intellectual property rights protecting our products and services. We rely on a combination of patents, copyrights, trademarks, service marks, trade secrets, confidentiality provisions and licensing arrangements to establish and protect our intellectual property and proprietary rights. Unauthorized parties may attempt to copy or discover aspects of our products or to obtain, license, sell or otherwise use information that we regard as proprietary. Policing unauthorized use of our products is difficult and we may not be able to protect our technology from unauthorized use. Additionally, our competitors may independently develop technologies that are substantially the same or superior to our technologies and that do not infringe our rights. In these cases, we would be unable to prevent our competitors from selling or licensing these similar or superior technologies. In addition, the laws of some foreign countries do not protect our proprietary rights to the same extent as the laws of the United States. Although the source code for our proprietary software is protected both as a trade secret and as a copyrighted work, litigation may be necessary to enforce our intellectual property rights, to protect our trade secrets, to determine the validity and scope of the proprietary rights of others, or to defend against claims of infringement or invalidity. Litigation, regardless of the outcome, can be very expensive and can divert management efforts.

Our software products may have bugs, which could result in delayed or lost revenue and bookings, expensive correction, liability to our customers and claims against us.

Complex software products such as ours may contain errors, defects or bugs. Defects in the solutions or products that we develop and sell to our customers could require expensive corrections and result in delayed or lost revenue and bookings, adverse customer reaction and negative publicity about us or our products and services. Customers who are not satisfied with any of our products may also bring claims against us for damages, which, even if unsuccessful, would likely be time-consuming to defend, and could result in costly litigation and payment of damages. Such claims could harm our reputation, financial results and competitive position.

Risks Related to our Corporate Structure, Organization and Common Stock

Our debt agreements contain covenant restrictions that may limit our ability to operate our business.

Our debt agreements contain, and any of our other future debt agreements or arrangements may contain, covenant restrictions that limit our ability to operate our business, including restrictions on our ability to:

• incur additional debt or issue guarantees;

• create liens;

• make certain investments;

• enter into transactions with our affiliates;

• sell certain assets;

• repurchase capital stock or make other restricted payments;

• declare or pay dividends or make other distributions to stockholders; and

• merge or consolidate with any entity.

Our ability to comply with these limitations is dependent on our future performance, which will be subject to many factors, some of which are beyond our control, including prevailing economic conditions. As a result of these limitations, our ability to respond to changes in business and economic conditions and to obtain additional financing, if needed, may be significantly restricted, and we may be prevented from engaging in transactions that might otherwise be beneficial to us. In addition, our failure to comply with our debt covenants could result in a default under our debt agreements, which could permit the holders to accelerate our obligation to repay the debt. If any of our debt is accelerated, we may not have sufficient funds available to repay the accelerated debt.

Our significant debt could adversely affect our financial health and prevent us from fulfilling our obligations under our credit facility and our convertible debentures.

We have a significant amount of debt. As of March 31, 2018, we had $2,587.0 million outstanding principal amount of debt, including $450.0 million of senior notes due in 2020, $300.0 million of senior notes due in 2024, and $500.0 million of senior notes due in 2026, $46.6 million of 2.75% 2031 Convertible Debentures redeemable in November 2021, $263.9 million of 1.5% 2035 Convertible Debentures redeemable in November 2021, $676.5 million of 1.0% 2035 Convertible Debentures redeemable in December 2022, and $350.0 million of 1.25% 2025 Convertible Debentures redeemable in April 2025. Investors may require us to redeem these debentures earlier than the dates indicated if the closing sale price of our common stock is more than 130% of

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the then current conversion price of the respective debentures for certain specified periods. If a holder elects to convert, we will be required to pay the principal amount in cash and any amounts payable in excess of the principal amount in cash or shares of our common stock, at our election. We also had a $242.5 million Revolving Credit Facility under which $4.1 million was committed to backing outstanding letters of credit issued and $238.4 million was available for borrowing at March 31, 2018. Our debt level could have important consequences, for example it could:

• require us to use a large portion of our cash flow to pay principal and interest on debt, including the convertible debentures and the credit facility, which will reduce the availability of our cash flow to fund working capital, capital expenditures, acquisitions, research and development, exploiting business opportunities, and other business activities;

• place us at a competitive disadvantage compared to our competitors that have less debt; and

• limit, along with the financial and other restrictive covenants related to our debt, our ability to borrow additional funds, dispose of assets or pay cash dividends.

Our ability to meet our payment and other obligations under our debt instruments depends on our ability to generate significant cash flow in the future. This, to some extent, is subject to general economic, financial, competitive, legislative and regulatory factors as well as other factors that are beyond our control. We cannot assure you that our business will generate cash flow from operations, or that additional capital will be available to us, in an amount sufficient to enable us to meet our payment obligations under the convertible debentures and our other debt and to fund other liquidity needs. If we are not able to generate sufficient cash flow to service our debt obligations, we may need to refinance or restructure our debt, including the convertible debentures, sell assets, reduce or delay capital investments, or seek to raise additional capital. If we are unable to implement one or more of these alternatives, we may not be able to meet our payment obligations under the convertible debentures and our other debt.

The market price of our common stock has been and may continue to be subject to wide fluctuations, and this may make it difficult for you to resell the common stock when you want or at prices you find attractive.

Our stock price historically has been, and may continue to be, volatile. Various factors contribute to the volatility of our stock price, including, for example, quarterly variations in our financial results, new product introductions by us or our competitors and general economic and market conditions. Sales of a substantial number of shares of our common stock by our largest stockholders, or the perception that such sales could occur, could also contribute to the volatility or our stock price. While we cannot predict the individual effect that any of these factors may have on the market price of our common stock, these factors, either individually or in the aggregate, could result in significant volatility in our stock price. Moreover, companies that have experienced volatility in the market price of their stock often are subject to securities class action litigation. Any such litigation could result in substantial costs and divert management's attention and resources.

Current uncertainty in the global financial markets and the global economy may negatively affect the value of our investment portfolio.

Our investment portfolios, which include investments in money market funds, bank deposits and separately managed investment portfolios, are generally subject to credit, liquidity, counterparty, market and interest rate risks that may be exacerbated by a global financial crisis or by uncertainty surrounding the United Kingdom's exit from the European Union. If the banking system or the fixed income, credit or equity markets deteriorate or remain volatile, our investment portfolio may be impacted and the values and liquidity of our investments could be adversely affected.

Future issuances of our common stock could adversely affect the trading price of our common stock and our ability to raise funds in new stock offerings.

Future issuances of substantial amounts of our common stock, whether in the public market or through private placements, including issuances in connection with acquisition activities, or the perception that such issuances could occur, could adversely affect prevailing trading prices of our common stock and could impair our ability to raise capital through future offerings of equity or equity-related securities. In connection with past acquisitions, we issued a substantial number of shares of our common stock as transaction consideration or contingent consideration. We may continue to issue equity securities for future acquisitions, which would dilute existing stockholders, perhaps significantly depending on the terms of such acquisitions. No prediction can be made as to the effect, if any, that future sales of shares of common stock, or the availability of shares of common stock for future sale, will have on the trading price of our common stock.

Our business could be negatively affected by the actions of activist stockholders.

In recent periods, certain stockholders have publicly and privately expressed concerns with the Company’s performance and with certain governance matters. For example, certain stockholders have expressed concerns about the timing and process related to

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our former chief executive officer retiring and the appointment of a new chief executive officer, certain provisions of our executive compensation plans and features of our corporate governance provisions in our governing documents and policies. In addition, we have enacted certain changes to our bylaws in the past year in response to demands from stockholders that may weaken our ability to prevent an unsolicited takeover. Responding to actions by activist stockholders can be costly and time-consuming, disrupting our operations and diverting the attention of management and our employees. Furthermore, any perceived uncertainties as to our future direction could result in the loss of potential business opportunities, and may make it more difficult to attract and retain qualified personnel and business partners.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

None.

Item 3. Defaults Upon Senior Securities

None.

Item 4. Mine Safety Disclosures

Not applicable.

Item 5. Other Information

Not applicable.

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Item 6. Exhibits

The exhibits listed on the Exhibit Index are filed or incorporated by reference (as stated therein) as part of this Quarterly Report on Form 10-Q.

EXHIBIT INDEX

		Incorporated by Reference
Exhibit Number	Exhibit Description	Form	File No.	Exhibit	Filing Date	Filed Herewith
3.1	Amended and Restated Certificate of Incorporation of the Registrant.	10-Q	0-27038	3.2	5/11/2001
3.2	Certificate of Amendment of the Amended and Restated Certificate of Incorporation of the Registrant.	10-Q	0-27038	3.1	8/9/2004
3.3	Certificate of Ownership and Merger.	8-K	0-27038	3.1	10/19/2005
3.4	Amended and Restated Bylaws of the Registrant.	8-K	0-27038	3.1	11/13/2017
3.5	Certificate of Amendment of the Amended and Restated Certificate of Incorporation of the Registrant, as amended.	S-3	333-142182	3.3	4/18/2007
10.1	Amended & Restated 2000 Stock Plan (Amended & Restated February 28, 2018)	8-K	0-27038	10.1	3/6/2018
10.2	Employment Agreement between the Registrant and Mark D. Benjamin Dated March 19, 2018	8-K	0-27038	10.1	3/22/2018
10.3	Separation & Release Agreement between the Registrant and Paul Ricci dated April 19, 2018					X
31.1	Certification of Chief Executive Officer Pursuant to Rule 13a-14(a) or 15d-14(a).					X
31.2	Certification of Chief Financial Officer Pursuant to Rule 13a-14(a) or 15d-14(a).					X
32.1	Certification Pursuant to 18 U.S.C. Section 1350.					X
101.0	The following materials from Nuance Communications, Inc.’s Quarterly Report on Form 10-Q for the quarter ended 3/31/2018, formatted in XBRL (Extensible Business Reporting Language): (i) the Consolidated Statements of Operations, (ii) the Consolidated Statements of Comprehensive Loss, (iii) the Consolidated Balance Sheets, (iv) the Consolidated Statements of Cash Flows, and (v) Notes to Unaudited Condensed Consolidated Financial Statements.					X

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this Quarterly Report on Form 10-Q to be signed on its behalf by the undersigned, thereunto duly authorized, in the Town of Burlington, Commonwealth of Massachusetts, on May 10, 2018.

Nuance Communications, Inc.
By:	/s/ Daniel D. Tempesta
	Daniel D. Tempesta
	Executive Vice President and Chief Financial Officer

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EX-10.3

Exhibit 10.3

SEPARATION & RELEASE AGREEMENT

This Separation & Release Agreement (the “Agreement”) is made by and between Nuance Communications, Inc., a Delaware corporation (the “Company”) and Paul A. Ricci (“Executive”). The Company and Executive are sometimes referred to collectively as the “Parties” and individually as a “Party.”

WHEREAS, Executive has agreed to enter this Agreement whereby Executive will release any and all claims Executive may have against the Company and other released parties upon certain events specified in the Amended and Restated Employment Agreement dated November 17, 2016 by and between Company and Executive (the “Employment Agreement”);

WHEREAS, Executive and the Company entered into an Employee Proprietary Information and Inventions Agreement dated November 2, 2006 (the “Confidentiality Agreement”);

WHEREAS, Executive and the Company entered into a Restricted Stock Unit Agreement dated November 17, 2016 under the Company’s 2000 Stock Plan with respect to 375,000 shares of Company Common Stock at target performance level (the “PSU”).

NOW THEREFORE, in consideration of the mutual promises made herein, the Parties hereby agree as follows:

1.Termination. Executive’s employment with the Company terminated on March 29, 2018 (the “Termination Date”). The Parties agree to treat such termination as a resignation for Good Reason pursuant to Section 5(c) of the Employment Agreement.

2.Consideration. In consideration of Executive’s execution of this Agreement and Executive’s fulfillment of all its terms and conditions, and provided that Executive does not revoke this Agreement pursuant to Section 9 below, the Company agrees as follows:

a.Separation Benefits. Subject to Executive’s compliance with the terms of (i) this Agreement and (ii) the Confidentiality Agreement (as defined below), the Company agrees that it will provide Executive with the severance benefits specified in Section 5(c) of the Employment Agreement upon the terms provided for therein. Pursuant to Section 5(c) of the Employment Agreement, Executive will be eligible to receive accelerated vesting of the PSU with respect to the target level of 375,000 shares. Executive’s continued group medical benefit under Section 5(a)(iii) of the Employment Agreement will be provided by the Company by means of additional taxable payments equal to the applicable COBRA premium. Executive acknowledges that without this Agreement, Executive is otherwise not entitled to the consideration listed in this Section 2(a).

b.Other Obligations. The Company will also provide Executive with the other payments and benefits specified in the Employment Agreement, upon the terms set forth therein, including but not limited to (i) the Retention Amount pursuant to Section 3(d) of the Employment Agreement; (ii) car allowance, tax and financial services allowance and reasonable IT support as provided in Sections 3(e), 3(f) and 3(h), respectively, of the Employment Agreement; (iii) executive wellness benefits as provided in Section 4(b) of the Employment Agreement; and (iv) a pro rata portion of any earned performance bonus for the first half of FY 2018 pursuant to Section 5 of the Employment Agreement, payable at the same time as executive bonuses are paid generally for FY 2018 performance under the Company bonus program.

3.Benefits. Executive’s health insurance benefits ceased on March 29, 2018, subject to Executive’s right to continue Executive’s health insurance under COBRA. Executive’s participation in all benefits and incidents of employment, including, but not limited to, vesting in equity awards, and the accrual of bonuses, vacation, and paid time off, ceased as of the Termination Date.

4.Confidential Information. Subject to Section 14, Executive shall continue to maintain the confidentiality of all confidential and proprietary information of the Company and shall continue to comply with the terms and conditions of the Confidentiality Agreement. Executive agrees that the above reaffirmation and agreement with the Confidentiality Agreement shall constitute a new and separately enforceable agreement to abide by the terms of the Confidentiality Agreement, entered and effective as of the Effective Date. Executive shall return all Company property and confidential and proprietary information in Executive’s possession to the Company on the Effective Date of this Agreement.

5.Payment of Salary and Receipt of All Benefits. Executive acknowledges and represents that, other than the severance and benefits to be paid as set forth in the Employment Agreement, the Company has paid or provided all salary, wages, bonuses, accrued vacation, premiums, leaves, relocation costs, interest, fees, reimbursable expenses, commissions, stock, equity awards, vesting, and any and all other benefits and compensation due to Executive.

6.Continuing Obligations. Executive acknowledges and agrees that he will remain bound by Section 12 of the Employment Agreement.

7.Mutual Non-disparagement. The Parties acknowledge and agree that they will remain bound by Section 13 of the Employment Agreement with respect to obligations regarding non-disparagement. Nothing in this Agreement shall prevent either Executive or the Company employees who are aware of the existence of this Agreement from responding accurately and fully to any question, inquiry or request for information when required by legal process, nor prevent Executive from engaging in Protected Activity (as defined below).

8.Release of Claims. Executive agrees that the consideration to be paid in accordance with the terms of the Employment Agreement represents settlement in full of all outstanding obligations owed to Executive by the Company and its past, present and future officers, agents, directors, employees, investors, shareholders, administrators, affiliates, divisions, subsidiaries, parents, predecessor and successor corporations, and assigns (the “Releasees”). Executive, on behalf of himself, and his respective heirs, family members, executors and assigns, hereby fully and forever releases the Releasees from, and agrees not to sue or otherwise institute or cause to be instituted any legal or administrative proceedings concerning any claim, duty, obligation or cause of action relating to any matters of any kind, whether presently known or unknown, suspected or unsuspected, that Executive may possess arising from any omissions, acts or facts that have occurred up until and including the Effective Date of this Agreement including, without limitation,

(a)any and all claims relating to or arising from Executive’s employment relationship with the Company and the termination of that relationship;

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(b)any and all claims relating to, or arising from, Executive’s right to purchase, or actual purchase of shares of stock of the Company, including, without limitation, any claims for fraud, misrepresentation, breach of fiduciary duty, breach of duty under applicable state corporate law, and securities fraud under any state or federal law;

(c)any and all claims for wrongful discharge of employment; termination in violation of public policy; discrimination; breach of contract, both express and implied; breach of a covenant of good faith and fair dealing, both express and implied; promissory estoppel; negligent or intentional infliction of emotional distress; negligent or intentional misrepresentation; negligent or intentional interference with contract or prospective economic advantage; unfair business practices; defamation; libel; slander; negligence; personal injury; assault; battery; invasion of privacy; false imprisonment; and conversion;

(d)any and all claims for violation of any federal, state or municipal statute, including, but not limited to, Title VII of the Civil Rights Act of 1964, the Civil Rights Act of 1991, the Age Discrimination in Employment Act of 1967, the Americans with Disabilities Act of 1990, the Fair Labor Standards Act, the Employee Retirement Income Security Act of 1974, The Worker Adjustment and Retraining Notification Act, the California Family Rights Act; the California Labor Code, the California Workers’ Compensation Act, the California Fair Employment and Housing Act, Massachusetts Law Prohibiting Unlawful Discrimination, as amended, Mass. Gen. Laws ch. 151B, § 1 et seq., Massachusetts Discriminatory Wage Rates Penalized Law (Massachusetts Equal Pay Law), as amended, Mass. Gen. Laws ch. 149, § 105A et seq., Massachusetts Right to be Free from Sexual Harassment Law, Mass. Gen. Laws ch. 214, § 1C, Massachusetts Discrimination Against Certain Persons on Account of Age Law, Mass. Gen. Laws ch. 149, § 24A et seq., Massachusetts Equal Rights Law, Mass. Gen. Laws ch. 93, § 102 et seq., Massachusetts Violation of Constitutional Rights Law, Mass. Gen. Laws ch. 12, § 11I, Massachusetts Family and Medical Leave Law, Mass. Gen. Laws ch. 149, § 52D; and the Massachusetts Wage Act, Mass. Gen. Laws ch. 149, § 148, et seq.;

(e)any and all claims for violation of the federal, or any state, constitution;

(f)any and all claims arising out of any other laws and regulations relating to employment or employment discrimination; and

(g)any and all claims for attorneys’ fees and costs.

Executive agrees that the release set forth in this section shall be and remain in effect in all respects as a complete general release as to the matters released. This release does not extend to any severance obligations due Executive under the Severance Agreement and does not release claims that cannot be released as a matter of law. Nothing in this Agreement waives Executive’s rights to indemnification or any payments under any insurance policy, if any, provided by any act or agreement of the Company, state or federal law or policy of insurance. Executive represents that Executive has made no assignment or transfer of any right, claim, complaint, charge, duty, obligation, demand, cause of action, or other matter waived or released by this Section.

9.Acknowledgment of Waiver of Claims under ADEA. Executive acknowledges that Executive is waiving and releasing any rights Executive may have under the Age Discrimination in Employment Act of 1967 (“ADEA”) and that this waiver and release is knowing and voluntary. Executive and the Company agree that this waiver and release does not apply to any rights or claims that may arise under the ADEA after the Effective Date of this Agreement. Executive acknowledges that the consideration given for this waiver and release Agreement is in addition to anything of value to which Executive was already entitled. Executive further acknowledges that Executive has been advised by this writing that (a) Executive should consult with an attorney prior to executing this Agreement; (b) Executive has at least twenty-one (21) days within which to consider this Agreement; (c) Executive has seven (7) days following the execution of this Agreement by the parties to revoke the Agreement; (d) this Agreement shall not be effective until the revocation period has expired; and (e) nothing in this Agreement prevents or precludes Executive from challenging or seeking a determination in good faith of the validity of this waiver under the ADEA, nor does it impose any

3

condition precedent, penalties or costs for doing so, unless specifically authorized by federal law. Any revocation should be in writing and delivered to the General Counsel at the Company by close of business on the seventh day from the date that Executive signs this Agreement. In the event Executive signs this Agreement and returns it to the Company in less than the 21-day period identified above, Executive hereby acknowledges that Executive has freely and voluntarily chosen to waive the time period allotted for considering this Agreement. The parties agree that changes, whether material or immaterial, do not restart the running of the 21-day period.

10.California Civil Code Section 1542. Executive acknowledges that Executive has been advised to consult with legal counsel and is familiar with the provisions of California Civil Code Section 1542, a statute that otherwise prohibits the release of unknown claims, which provides as follows:

A GENERAL RELEASE DOES NOT EXTEND TO CLAIMS WHICH THE CREDITOR DOES NOT KNOW OR SUSPECT TO EXIST IN HIS OR HER FAVOR AT THE TIME OF EXECUTING THE RELEASE, WHICH IF KNOWN BY HIM OR HER MUST HAVE MATERIALLY AFFECTED HIS OR HER SETTLEMENT WITH THE DEBTOR.

Executive, being aware of said code section, agrees to expressly waive any rights Executive may have thereunder, as well as under any other statute or common law principles of similar effect.

11.No Pending or Future Lawsuits. Executive represents that Executive has no lawsuits, claims, or actions pending in Executive’s name, or on behalf of any other person or entity, against the Company or any other person or entity referred to herein. Executive also represents that Executive does not intend to bring any claims on Executive’s own behalf or on behalf of any other person or entity against the Company or any other person or entity referred to herein.

12.No Cooperation. Subject to Section 14, Executive agrees that he or she will not counsel or assist any attorneys or their clients in the presentation or prosecution of any disputes, differences, grievances, claims, charges, or complaints by any third party against the Company and/or any officer, director, employee, agent, representative, shareholder or attorney of the Company, unless under a subpoena or other court order to do so or as related directly to the ADEA waiver in this Agreement. Executive agrees both to immediately notify the Company upon receipt of any such subpoena or court order, and to furnish, within three (3) business days of its receipt, a copy of such subpoena or other court order.

13.No Admission of Liability. Executive understands and acknowledges that this Agreement constitutes a compromise and settlement of disputed claims. No action taken by the Company, either previously or in connection with this Agreement shall be deemed or construed to be (a) an admission of the truth or falsity of any claims heretofore made or (b) an acknowledgment or admission by the Company of any fault or liability whatsoever to the Executive or to any third party.

14.Protected Activity. Executive understands that nothing in this Agreement or in the Confidentiality Agreement shall in any way limit or prohibit Executive from engaging for a lawful purpose in any Protected Activity. For purposes of this Agreement, “Protected Activity” shall mean filing a charge, complaint or report with, or otherwise communicating with, cooperating with or participating in any investigation or proceeding that may be conducted by any federal, state or local

4

government agency or commission, including the Securities and Exchange Commission, the Equal Employment Opportunity Commission, the Occupational Safety and Health Administration, and the National Labor Relations Board (“Government Agencies”). Executive understands that in connection with such Protected Activity, Executive is permitted to disclose documents or other information as permitted by law, and without giving notice to, or receiving authorization from, the Company. Executive agrees to take all reasonable precautions to prevent any unauthorized use or disclosure of any information that may constitute Company Proprietary Information under this Agreement or the Confidentiality Agreement to any parties other than the relevant Government Agencies. Executive further understands that Protected Activity does not include the disclosure of any Company attorney-client privileged communications.

15.Tax Consequences. The Company makes no representations or warranties with respect to the tax consequences of the payments and any other consideration provided to Executive or made on Executive’s behalf under the terms of this Agreement. Executive agrees and understands that Executive is responsible for payment, if any, of local, state, and/or federal taxes on the payments and any other consideration provided hereunder by the Company and any penalties or assessments thereon. Executive further agrees to indemnify and hold the Releasees harmless from any claims, demands, deficiencies, penalties, interest, assessments, executions, judgments, or recoveries by any government agency against the Company for any amounts claimed due on account of (a) Executive’s failure to pay or delayed payment of federal or state taxes, or (b) damages sustained by the Company by reason of any such claims, including attorneys’ fees and costs.

16.Section 409A. It is intended that this Agreement comply with, or be exempt from, Internal Revenue Code Section 409A and the final regulations and official guidance thereunder (“Section 409A”) and any ambiguities herein will be interpreted to so comply and/or be exempt from Section 409A. The Company and Executive will work together in good faith to consider either (i) amendments to this Agreement; or (ii) revisions to this Agreement with respect to the payment of any awards, which are necessary or appropriate to avoid imposition of any additional tax or income recognition prior to the actual payment to Executive under Section 409A. In no event will the Releasees reimburse Executive for any taxes that may be imposed on Executive as a result of Section 409A.

17.Miscellaneous.

(h)Costs. The Parties shall each bear their own costs, expert fees, attorneys’ fees and other fees incurred in connection with this Agreement.

(i)Authority. Executive represents and warrants that Executive has the capacity to act on Executive’s own behalf and on behalf of all who might claim through Executive to bind them to the terms and conditions of this Agreement.

(j)No Representations. Executive represents that Executive has had the opportunity to consult with an attorney, and has carefully read and understands the scope and effect of the provisions of this Agreement. Neither Party has relied upon any representations or statements made by the other Party hereto which are not specifically set forth in this Agreement.

(k)Severability. In the event that any provision hereof becomes or is declared by a court of competent jurisdiction to be illegal, unenforceable or void, this Agreement shall continue in full force and effect without said provision.

(l)Attorneys’ Fees. Except with regard to a legal action challenging or seeking a determination in good faith of the validity of the waiver herein under the ADEA, in the event that either Party

5

brings an action to enforce or effect its rights under this Agreement, the prevailing Party shall be entitled to recover its costs and expenses, including the costs of mediation, arbitration, litigation, court fees, and reasonable attorneys’ fees incurred in connection with such an action.

(m)Entire Agreement. This Agreement, along with the Employment Agreement and the Confidentiality Agreement, represents the entire agreement and understanding between the Company and Executive concerning the subject matter of this Agreement and Executive’s employment with and separation from the Company and the events leading thereto and associated therewith, and supersedes and replaces any and all prior agreements and understandings concerning the subject matter of this Agreement and Executive’s relationship with the Company, with the exception of the applicable award agreement and plan governing Executive’s PSU.

(n)No Oral Modification. This Agreement may only be amended in writing signed by Executive and the Chief Executive Officer of the Company.

(o)Governing Law. This Agreement shall be governed by the internal substantive laws, but not the choice of law rules, of the State of California, and the Company and the Executive each consent to personal and exclusive jurisdiction and venue in the State of California.

(p)Effective Date. Executive understands that this Agreement shall be null and void if not executed by Executive and returned to the Company within the 21 day period set forth in Section 9 above. This Agreement is effective eight (8) days after it has been signed by both Executive, so long as it has been signed by the Parties and has not been revoked by either Party before that date (the “Effective Date”).

(q)Counterparts. This Agreement may be executed in counterparts, and each counterpart shall have the same force and effect as an original and shall constitute an effective, binding agreement on the part of each of the undersigned.

(r)Voluntary Execution of Agreement. Executive understands and agrees that Executive is executing this Agreement voluntarily and without any duress or undue influence on the part or behalf of the Company or any third party, with the full intent of releasing all of Executive’s claims against the Company and other persons referenced herein. Executive acknowledge that:

(i)Executive has read this Agreement;

(ii)Executive has been represented in the preparation, negotiation, and execution of this Agreement by legal counsel of Executive’s own choice or has voluntarily declined to seek such counsel;

(iii)Executive understand the terms and consequences of this Agreement and of the releases it contains; and

(iv)Executive is fully aware of the legal and binding effect of this Agreement.

Signature Page Follows

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IN WITNESS WHEREOF, the Parties have executed this Separation & Release Agreement on the respective dates set forth below.

COMPANY:NUANCE COMMUNICATIONS, INC.

By:/s/ Robert Frankenberg

Title: Chairman of the Compensation Committee of the Board of Directors

Date:April 19, 2018

EXECUTIVE:/s/ Paul A. Ricci

Date:April 19, 2018

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EX-31.1

Exhibit 31.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER

PURSUANT TO

SECTION 302(A) OF THE SARBANES-OXLEY ACT OF 2002

I, Mark Benjamin, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Nuance Communications, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

By:	/s/ Mark Benjamin
	Mark Benjamin
	Chief Executive Officer

May 10, 2018

EX-31.2

Exhibit 31.2

CERTIFICATION OF CHIEF FINANCIAL OFFICER

PURSUANT TO

SECTION 302(A) OF THE SARBANES-OXLEY ACT OF 2002

I, Daniel D. Tempesta, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Nuance Communications, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

By:	/s/ Daniel D. Tempesta
	Daniel D. Tempesta
	Executive Vice President and Chief Financial Officer

May 10, 2018

EX-32.1

Exhibit 32.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER

PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I, Mark Benjamin, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Quarterly Report of Nuance Communications, Inc. on Form 10-Q for the period ended March 31, 2018 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that the information contained in such Quarterly Report on Form 10-Q fairly presents in all material respects the financial condition and results of operations of Nuance Communications, Inc.

By:	/s/ Mark Benjamin
	Mark Benjamin
	Chief Executive Officer

May 10, 2018

I, Daniel D. Tempesta, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Quarterly Report of Nuance Communications, Inc. on Form 10-Q for the period ended March 31, 2018 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that the information contained in such Quarterly Report on Form 10-Q fairly presents in all material respects the financial condition and results of operations of Nuance Communications, Inc.

By:	/s/ Daniel D. Tempesta
	Daniel D. Tempesta
	Executive Vice President and Chief Financial Officer

May 10, 2018

XML

Document and Entity Information - shares	6 Months Ended
	Mar. 31, 2018	May 03, 2018
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q2
Trading Symbol	NUAN
Entity Registrant Name	Nuance Communications, Inc.
Entity Central Index Key	0001002517
Current Fiscal Year End Date	--09-30
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		295,432,178

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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Document Period End Date			Mar. 31, 2018
Revenues:
Professional services and hosting	$ 274,574	$ 258,690	$ 533,601	$ 512,107
Product and licensing	161,284	159,258	323,094	311,010
Maintenance and support	78,366	81,625	159,174	164,114
Total revenues	514,224	499,573	1,015,869	987,231
Cost of revenues:
Professional services and hosting	181,051	164,170	353,579	329,062
Product and licensing	18,966	18,790	38,035	37,168
Maintenance and support	14,191	13,240	28,432	26,838
Amortization of intangible assets	14,780	17,218	30,136	32,760
Total cost of revenues	228,988	213,418	450,182	425,828
Gross profit	285,236	286,155	565,687	561,403
Operating expenses:
Research and development	74,185	66,232	147,551	132,554
Sales and marketing	94,187	93,674	196,147	195,190
General and administrative	74,288	41,518	127,180	81,308
Amortization of intangible assets	22,670	27,912	45,734	55,771
Acquisition-related costs, net	2,360	5,379	7,921	14,405
Restructuring and other charges, net	8,948	19,911	23,749	26,614
Asset Impairment Charges	137,907	0	137,907	0
Total operating expenses	414,545	254,626	686,189	505,842
(Loss) income from operations	(129,309)	31,529	(120,502)	55,561
Other (expense) income:
Interest income	2,236	1,280	4,428	2,303
Interest expense	(33,866)	(37,853)	(69,936)	(75,874)
Other expense, net	(570)	(19,623)	(792)	(20,232)
Loss before income taxes	(161,509)	(24,667)	(186,802)	(38,242)
Provision (benefit) for income taxes	2,544	9,141	(75,977)	19,494
Net loss	$ (164,053)	$ (33,808)	$ (110,825)	$ (57,736)
Net loss per share:
Basic (in dollars per share)	$ (0.56)	$ (0.12)	$ (0.38)	$ (0.20)
Diluted (in dollars per share)	$ (0.56)	$ (0.12)	$ (0.38)	$ (0.20)
Weighted average common shares outstanding:
Basic (in shares)	294,103	291,021	292,720	289,976
Diluted (in shares)	294,103	291,021	292,720	289,976

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Net loss	$ (164,053)	$ (33,808)	$ (110,825)	$ (57,736)
Other comprehensive income (loss):
Foreign currency translation adjustment	4,096	17,947	5,611	(12,619)
Pension Adjustments	0	118	116	236
Unrealized (loss) gain on marketable securities	(71)	27	(348)	(4)
Total other comprehensive income (loss), net	4,025	18,092	5,379	(12,387)
Comprehensive loss	$ (160,028)	$ (15,716)	$ (105,446)	$ (70,123)

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CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2018	Sep. 30, 2017
Current assets:
Cash and cash equivalents	$ 468,642	$ 592,299
Marketable securities	153,008	251,981
Accounts receivable, less allowances for doubtful accounts of $12,458 and $14,333	411,648	395,392
Prepaid expenses and other current assets	107,929	88,269
Total current assets	1,141,227	1,327,941
Marketable Securities, Noncurrent	27,087	29,844
Land, building and equipment, net	172,521	176,548
Goodwill	3,472,849	3,590,608
Intangible assets, net	596,060	664,474
Other assets	147,016	142,508
Total assets	5,556,760	5,931,923
Current liabilities:
Current portion of long-term debt	0	376,121
Contingent And Deferred Acquisition Payments	20,926	28,860
Accounts payable	92,767	94,604
Accrued expenses and other current liabilities	214,680	245,901
Deferred revenue	413,126	366,042
Total current liabilities	741,499	1,111,528
Long-term debt	2,311,484	2,241,283
Deferred revenue, net of current portion	469,575	423,929
Deferred tax liabilities	42,344	131,320
Other liabilities	98,176	92,481
Total liabilities	3,663,078	4,000,541
Commitments and contingencies
Stockholders’ equity:
Common stock, $0.001 par value per share; 560,000 shares authorized; 298,330 and 293,938 shares issued and 294,580 and 290,187 shares outstanding, respectively	298	294
Additional paid-in capital	2,697,869	2,629,245
Treasury stock, at cost (3,751 shares)	(16,788)	(16,788)
Accumulated other comprehensive loss	(95,963)	(101,342)
Accumulated deficit	(691,734)	(580,027)
Total stockholders’ equity	1,893,682	1,931,382
Total liabilities and stockholders’ equity	$ 5,556,760	$ 5,931,923

XML

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Mar. 31, 2018	Sep. 30, 2017
Accounts receivable, allowances for doubtful accounts	$ 12,458	$ 14,333
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	560,000	560,000
Common stock, shares issued	298,330	293,938
Common stock, shares outstanding	294,580	290,187
Treasury stock, shares	3,751	3,751

XML

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Net loss	$ (110,825)	$ (57,736)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	107,055	116,644
Stock-based compensation	71,735	79,478
Non-cash interest expense	25,195	26,771
Deferred tax (benefit) provision	(90,331)	5,643
Loss on extinguishment of debt	0	18,565
Goodwill, Impairment Loss	137,907	0
Other Asset Impairment Charges	1,780	10,944
Other	579	2,342
Changes in operating assets and liabilities, excluding effects of acquisitions:
Accounts receivable	(12,415)	(1,431)
Prepaid expenses and other assets	(22,059)	(12,295)
Accounts payable	(3,773)	(1,000)
Accrued expenses and other liabilities	5,230	(10,579)
Deferred revenue	85,287	72,988
Net cash provided by operating activities	195,365	250,334
Cash flows from investing activities:
Capital expenditures	(25,326)	(18,787)
Payments for business and asset acquisitions, net of cash acquired (including cash payments of $3.5 million to a related party for fiscal 2018, see Note 16)	(12,768)	(72,990)
Purchase of marketable securities and other investments	(92,994)	(153,851)
Proceeds from sales and maturities of marketable securities and other investments	195,273	69,658
Net cash provided by (used in) investing activities	64,185	(175,970)
Cash flows from financing activities:
Repayment and redemption of debt	(331,172)	(634,055)
Proceeds from Issuance of Long-term Debt	0	838,959
Payments for Repurchase of Common Stock	0	(99,077)
Payment for Contingent Consideration Liability, Financing Activities	(16,927)	0
Payments of other long-term liabilities	(647)	(206)
Proceeds from issuance of common stock from employee stock plans	9,360	8,598
Payments for taxes related to net share settlement of equity awards	(44,006)	(43,353)
Net cash (used in) provided by financing activities	(383,392)	70,866
Effects of exchange rate changes on cash and cash equivalents	185	(1,210)
Net (decrease) increase in cash and cash equivalents	(123,657)	144,020
Cash and cash equivalents at beginning of period	592,299	481,620
Cash and cash equivalents at end of period	$ 468,642	$ 625,640

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Organization and Presentation

6 Months Ended

Mar. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Organization and Presentation

Organization and Presentation

The condensed consolidated financial statements include the accounts of Nuance Communications, Inc. (“Nuance”, “we”, "our", or “the Company”) and our wholly-owned subsidiaries. We prepared the unaudited interim condensed 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 normal and recurring adjustments that, in our opinion, are necessary to present fairly our financial position, results of operations and cash flows for the periods presented. 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, disclosure of contingent assets and liabilities, and the reported amounts of revenues and expenses during the reporting period.

Although we believe the disclosures included herein are adequate to ensure that the condensed consolidated financial statements are fairly presented, certain information and footnote disclosures to the financial statements have been condensed or omitted in accordance with the rules and regulations of the SEC. Accordingly, the condensed consolidated financial statements and the footnotes included herein should be read in conjunction with the audited financial statements and the footnotes included in our Annual Report on Form 10-K for the fiscal year ended September 30, 2017. The results of operations for the interim periods presented are not necessarily indicative of the results for the entire fiscal year or any future period.

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Summary of Significant Accounting Policies

6 Months Ended

Mar. 31, 2018

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Summary of Significant Accounting Policies

Recently Adopted Accounting Standards

In October 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2016-16, "Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory" ("ASU 2016-16"), which requires income tax consequences of inter-company transfers of assets other than inventory to be recognized when the transfer occurs. ASU 2016-16 is effective for fiscal years beginning after December 15, 2017, with early adoption permitted. We early adopted the guidance during the first quarter of fiscal year 2018. As a result, deferred tax liabilities of $0.9 million arising from inter-company transfers in prior years were recognized and recorded against the beginning balance of accumulated deficit in the first quarter of fiscal year 2018. The adoption of the guidance did not have a material impact on our consolidated financial statements for any period presented.

Recently Issued Accounting Standards

In January 2018, the FASB issued ASU 2018-02, "Income Statement — Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income ("AOCI"), which is effective for fiscal years beginning after December 15, 2018 and interim periods therein, with early adoption permitted. The guidance gives entities the option to reclassify to retained earnings the tax effects resulting from the Tax Cuts and Jobs Act ("TCJA") related to items in AOCI. The new guidance may be applied retrospectively to each period in which the effect of the Act is recognized in the period of adoption. We do not expect the implementation to have a material impact on our consolidated financial statements.

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 is effective for fiscal years beginning after December 15, 2017 and the interim periods therein, with early adoption permitted. The guidance requires cash flows with multiple characteristics to be classified using a three-step process, including (i) determining whether explicit guidance is applicable, (ii) separating each identifiable source or use of cash flows, and (iii) determining the predominant source or use of cash flows when the source or use of cash flows cannot be separately identifiable. The guidance will be applied retrospectively to each period presented. We do not expect the implementation to have a material impact on our consolidated financial statements.

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. While we are continuing to assess all potential impacts of the new standard, we currently believe the most significant impact relates to our accounting for arrangements that include term-based software licenses bundled with maintenance and support. Under current GAAP, the revenue attributable to these software licenses is recognized ratably over the term of the arrangement because vendor-specific objective evidence ("VSOE") does not exist for the undelivered maintenance and support element as it is not sold separately. The requirement to have VSOE for undelivered elements to enable the separation of revenue for the delivered software licenses is eliminated under the new standard. Accordingly, under the new standard we will be required to recognize as revenue a portion of the arrangement fee upon delivery of the software license. While we currently expect revenue related to our professional services and cloud offerings to remain substantially unchanged, we are still in the process of evaluating the impact of the new standard on these arrangements. We plan to adopt this guidance beginning on October 1, 2018 and apply the cumulative catch-up transition method, with a cumulative adjustment to retained earnings as opposed to retrospectively adjusting prior periods.

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Business Acquisitions

6 Months Ended

Mar. 31, 2018

Business Combinations [Abstract]

Business Acquisitions

Business Acquisitions

We continue to expand our solutions and integrate our technologies in new offerings through acquisitions. A summary of our acquisition activities is as follows:

Fiscal Year 2018

For the six months endedMarch 31, 2018, we completed an acquisition in our Healthcare segment for a total cash consideration of $8.7 million and contingent payments with a fair value of $0.5 million. As a result, we recognized goodwill of $6.8 million, and other intangible assets of $2.0 million, with a weighted average life of 2.0 years. The acquisition did not have a material impact on our condensed consolidated financial statements for the period.

In April 2018, we completed an acquisition in our Automotive segment for a total cash consideration of approximately $82 million, net of cash acquired. We are currently in the process of determining the total consideration transferred and the fair values of assets acquired and liabilities assumed, but do not expect this acquisition to have a material impact on our condensed consolidated financial statements.

Fiscal Year 2017

For the six months endedMarch 31, 2017, we completed several acquisitions in our Enterprise, Healthcare and Mobile segments for a total cash consideration of $34.4 million, 0.8 million shares of common stock valued at $13.4 million and contingent payments with a fair value of $2.0 million. As a result, we recognized goodwill of $27.0 million, and other intangible assets of $22.5 million, with a weighted average life of 6.2 years. Such acquisitions were not significant individually or in the aggregate.

Acquisition-Related Costs, net

Acquisition-related costs include costs related to business acquisitions. These costs consist of (i) transition and integration costs, including retention payments, transitional employee costs and earn-out payments, and other costs related to integration activities; (ii) professional service fees, 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) fair value adjustments to acquisition-related contingencies.

A summary of acquisition-related costs, net is as follows (dollars in thousands):

	Three Months Ended March 31,						Six Months Ended March 31,
	2018			2017			2018			2017
Transition and integration costs	$	3,367		$	3,612		$	7,429		$	7,322
Professional service fees	940			2,974			1,451			7,991
Acquisition-related adjustments	(1,947		)	(1,207		)	(959		)	(908		)
Total	$	2,360		$	5,379		$	7,921		$	14,405

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Goodwill and Intangible Assets

6 Months Ended

Mar. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

Goodwill and Intangible Assets

The changes in the carrying amount of goodwill by reportable segment for the six months endedMarch 31, 2018 are as follows (dollars in thousands):

Goodwill

	Healthcare			Enterprise		Imaging		Mobile			Automotive		Other			Total
Balance as of September 30, 2017	$	1,418,334		$	673,472	$	257,792	$	1,241,010		$	—	$	—		$	3,590,608
Acquisitions	6,775			—		—		—			—		—			6,775
Purchase accounting adjustments	(336		)	—		—		2,697			—		—			2,361
Effect of foreign currency translation	1,725			3,536		407		5,344			—		—			11,012
Reorganization (Note 17)	—			11,991		—		(1,249,051		)	1,080,453		156,607			—
Impairment charge (a)	—			—		—		—			—		(137,907		)	(137,907		)
Balance as of March 31, 2018	$	1,426,498		$	688,999	$	258,199	$	—		$	1,080,453	$	18,700		$	3,472,849

^(a)Represents accumulated impairment charge as of March 31, 2018.

Other Intangible Assets

The changes in the carrying amount of intangible assets for the six months endedMarch 31, 2018 are as follows (dollars in thousands):

	Intangible Assets
Balance at September 30, 2017	$	664,474
Acquisitions	2,620
Acquisition from a related party (Note 16)	5,000
Amortization	(75,870		)
Effect of foreign currency translation	(164		)
Balance at March 31, 2018	$	596,060

Interim Impairment Analysis

As more fully described in Note 17, effective the second quarter of fiscal year 2018, our Automotive business, which was previously included within our Mobile segment, became a standalone operating segment. In addition, we moved our Dragon TV business from our Mobile operating segment into our Enterprise operating segment.

As a result of the reorganization, the original Mobile reporting unit was separated into three discrete lines of business comprised of Automotive, Dragon TV, and Devices. We assigned $1,080.5 million, $12.0 million, and $36.0 million of goodwill to Automotive, Dragon TV and Devices, respectively, based on their relative fair values as of March 31, 2018, and assessed the assigned goodwill for impairment by comparing each component’s fair value to its carrying amount. The fair values of Automotive and Dragon TV significantly exceeded their carrying amounts. However, the carrying value of Devices exceeded its fair value by $35.1 million. The standalone multi-year operating plan reflects the ongoing consolidation of our handset manufacturer customer base and continued erosion of our penetration of the remaining market. As a result, we recorded a $35.1 million goodwill impairment for the second quarter of fiscal 2018. After the impairment charge, the goodwill assigned to Devices as of March 31, 2018 was immaterial. The reorganization did not result in any impairment charge of other intangible assets for the second quarter of fiscal 2018.

Also during the second quarter of fiscal 2018, our Subscriber Revenue Services ("SRS") reporting unit, originally included within our Mobile operating segment, recorded significantly lower revenue and profitability due to recent market disruptions in certain markets that we serve. Our SRS business provides value-added services to mobile operators in emerging markets, primarily in India and Brazil. These markets have experienced recent and dramatic disruption as a result of accelerated change in competition and business models for our mobile operator customers. Specifically, the rapid shift away from a model where voice, data and text are offered separately toward unlimited bundled services at considerably lower costs has significantly reduced mobile operators’ demand for our services. This reduced demand materially impacts our future expectations for SRS revenues. As a result, executive management performed an updated strategic assessment and reduced the long-term growth rates and profitability contemplated in SRS's multi-year operating plan. We concluded that these financial results coupled with the rapid market shifts being experienced in the industry were factors that represented impairment indicators, triggering a review of goodwill and indefinite-lived intangible assets for impairment during the second quarter of fiscal 2018. Based on the result of the impairment assessment, the carrying value of SRS exceeded its fair value by $94.3 million. In addition, we recorded an $8.5 million deferred tax benefit related to SRS’s goodwill, which is amortized over time for tax purposes, and therefore increased the impairment charge by the same amount. As a result, we recorded a goodwill impairment charge of $102.8 million related to SRS for the second quarter of fiscal 2018. After the impairment charge, goodwill assigned to SRS was $17.8 million as of March 31, 2018. The assessment did not result in any impairment charge of other intangible assets for the second quarter of fiscal 2018.

For the purpose of the goodwill impairment analysis, the carrying value of each reporting unit is determined based on the allocation of assets and liabilities to the reporting unit based on the reporting unit’s revenue and operating expenses as a percentage of our consolidated revenue and operating expenses. Certain corporate assets and liabilities that are not directly attributable to the reporting unit’s operations and would not be transferred to a hypothetical purchaser of the reporting unit are excluded from the reporting unit’s carrying amount.

The fair value of a reporting unit is generally determined using a combination of the income approach and the market approach, where the income approach is weighted 50% and the market approach 50%. The fair values of Devices and Dragon TV, however, were determined solely based upon the income approach due to the lack of comparable public companies or comparable acquisitions. For the income approach, fair value is determined based on the present value of estimated future after-tax cash flows, discounted at an appropriate risk-adjusted rate. We use our internal forecasts to estimate future after-tax cash flows and estimate the long-term growth rates based on our most recent views of the long-term outlook for each reporting unit. Actual results may differ from those assumed in our forecasts. We derive our discount rates using a capital asset pricing model and analyzing published rates for industries relevant to our reporting units to estimate the weighted average cost of capital. We use discount rates that are commensurate with the risks and uncertainty inherent in the respective businesses and in our internally developed forecasts. For the market approach, we use a valuation technique in which values are derived based on valuation multiples of comparable publicly traded companies. We assess each valuation methodology based upon the relevance and availability of the data at the time we perform the valuation and weight the methodologies appropriately.

Determining the fair value of a reporting unit involves the use of significant estimates and assumptions, all of which we believe are reasonable but nevertheless inherently uncertain. These estimates and assumptions include revenue growth rates and operating margins used to estimate future cash flows, risk-adjusted discount rates, future economic and market conditions, and the use of market comparables. Additionally, if we continue to experience lower-than-expected growth in a reporting unit or fail to sustain our profitability due to changing market dynamics, competition or technological obsolescence, it could adversely impact the long-term assumptions used in our goodwill impairment analysis. Such changes in assumptions and estimates may result in additional impairment of our goodwill and/or other long-lived assets, which could materially impact our future results of operations and financial conditions. Finally, as we continue to identify and assess other initiatives to better align our segment reporting structure with our long-term strategies, any additional changes in our organizational and segment reporting structure may result in additional impairment charges of goodwill and other intangible assets.

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Financial Instruments and Hedging Activities

6 Months Ended

Mar. 31, 2018

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 utilize foreign currency forward contracts to mitigate the risks associated with changes in foreign currency exchange rates. Generally, we enter into such contracts for less than 90 days and have no cash requirements until maturity. At March 31, 2018 and September 30, 2017, we had outstanding contracts with a total notional value of $78.0 million and $69.0 million, respectively.

We did not designate any forward contracts as hedging instruments for the six months endedMarch 31, 2018 or 2017. Therefore, changes in fair value of foreign currency forward contracts were recognized within other expense, net in our condensed consolidated statements of operations. The cash flows related to the settlement of forward contracts not designated as hedging instruments are included in cash flows from investing activities within our condensed consolidated statement of cash flows.

A summary of the derivative instruments as of March 31, 2018 and September 30, 2017 is as follows (dollars in thousands):

Derivatives Not Designated as Hedges	Balance Sheet Classification	Fair Value
		March 31, 2018			September 30, 2017
Foreign currency forward contracts	Prepaid expenses and other current assets	$	325		$	220
Foreign currency forward contracts	Accrued expenses and other current liabilities	(374		)	(373		)

A summary of loss related to the derivative instruments for the six months endedMarch 31, 2018 and 2017 is as follows (dollars in thousands):

	Income Statement Classification	Three Months Ended March 31,					Six Months Ended March 31,
Derivatives Not Designated as Hedges	Income (loss) recognized	2018			2017		2018			2017
Foreign currency forward contracts	Other expense, net	$	(785	)	$	3,555	$	(1,182	)	$	(8,060	)

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Fair Value Measures

6 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Fair Value Measures

Fair Value Measurements

Fair value is defined as the price that would be received to sell 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 determination of the applicable level within the hierarchy of a particular financial asset or liability depends on the lowest level of inputs that are significant to the fair value measurement as of the measurement date as follows:

• Level 1: Quoted prices for identical assets or liabilities in active markets.

• Level 2: Observable inputs other than those described as Level 1.

• Level 3: Unobservable inputs that are supportable by little or no market activities and are based on significant assumptions and estimates.

Assets and liabilities measured at fair value on a recurring basis at March 31, 2018 and September 30, 2017 consisted of the following (dollars in thousands):

	March 31, 2018
	Level 1		Level 2			Level 3			Total
Assets:
Money market funds(a)	$	342,877	$	—		$	—		$	342,877
Time deposits(b)	—		97,421			—			97,421
Commercial paper, $42,987 at cost(b)	—		43,084			—			43,084
Corporate notes and bonds, $79,574 at cost(b)	—		79,116			—			79,116
Foreign currency exchange contracts(b)	—		325			—			325
Total assets at fair value	$	342,877	$	219,946		$	—		$	562,823
Liabilities:
Foreign currency exchange contracts(b)	$	—	$	(374	)	$	—		$	(374	)
Contingent acquisition payments(c)	—		—			(11,752		)	(11,752		)
Total liabilities at fair value	$	—	$	(374	)	$	(11,752	)	$	(12,126	)

	September 30, 2017
	Level 1		Level 2			Level 3			Total
Assets:
Money market funds(a)	$	381,899	$	—		$	—		$	381,899
Time deposits(b)	—		85,570			—			85,570
Commercial paper, $41,805 at cost(b)	—		41,968			—			41,968
Corporate notes and bonds, $74,150 at cost(b)	—		74,067			—			74,067
Foreign currency exchange contracts(b)	—		220			—			220
Total assets at fair value	$	381,899	$	201,825		$	—		$	583,724
Liabilities:
Foreign currency exchange contracts(b)	$	—	$	(373	)	$	—		$	(373	)
Contingent acquisition payments(c)	—		—			(8,648		)	(8,648		)
Total liabilities at fair value	$	—	$	(373	)	$	(8,648	)	$	(9,021	)

^(a)  Money market funds and time deposits with original maturity of 90 days or less are included within cash and cash equivalents in the consolidated balance sheets and are valued at quoted market prices in active markets.

^(b)  Time deposits, commercial paper, corporate notes and bonds, and foreign currency exchange contracts are recorded at fair market values, which are determined 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. Commercial paper and corporate notes and bonds generally mature within three years and had a weighted average maturity of 0.68 years as of March 31, 2018 and 0.72 years as of September 30, 2017.

^(c)  The fair values of our contingent consideration arrangements were determined using either the option pricing model with Monte Carlo simulation or the probability-weighted discounted cash flow method.

As of September 30, 2017, $80.2 million of debt securities included within marketable securities were designated as held-to-maturity investments, which had a weighted average maturity of 0.27 years and an estimated fair value of $80.4 million based on Level 2 measurements. No debt securities were designated as held-to-maturity investments as of March 31, 2018.

The estimated fair value of our long-term debt approximated $2,558.6 million (face value $2,587.0 million) and $2,930.9 million (face value $2,918.1 million) as of March 31, 2018 and September 30, 2017, respectively, based on Level 2 measurements. The fair value of each borrowing was estimated using the averages of the bid and ask trading quotes at each respective reporting date. There was no balance outstanding under our revolving credit agreement as of March 31, 2018 or September 30, 2017.

Additionally, contingent acquisition payments are recorded at fair values upon the acquisition, and remeasured in subsequent reporting periods with the changes in fair values recorded within acquisition-related costs, net. Such payments are contingent upon the achievement of specified performance targets and are valued using the option pricing model with Monte Carlo simulation or the probability-weighted discounted cash flow model.

The following table provides a summary of changes in the aggregate fair value of the contingent acquisition payments for all periods presented (dollars in thousands):

	Three Months Ended March 31,						Six Months Ended March 31,
	2018			2017			2018			2017
Balance at beginning of period	$	10,431		$	8,961		$	8,648		$	8,240
Earn-out liabilities established at time of acquisition	—			1,600			500			3,253
Payments and foreign currency translation	(79		)	(2,759		)	(96		)	(4,257		)
Adjustments to fair value included in acquisition-related costs, net	1,400			(1,425		)	2,700			(859		)
Balance at end of period	$	11,752		$	6,377		$	11,752		$	6,377

Contingent acquisition payments are to be made in periods through fiscal year 2019. As of March 31, 2018, the maximum amount payable based on the agreements was $19.6 million if the specified performance targets are achieved.

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Accrued Expenses and Other Current Liabilities

6 Months Ended

Mar. 31, 2018

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):

	March 31, 2018		September 30, 2017
Compensation	$	119,683	$	159,951
Cost of revenue related liabilities	26,036		20,124
Consulting and professional fees	24,741		12,649
Accrued interest payable	22,318		26,285
Facility-related liabilities	5,006		7,158
Sales and marketing incentives	4,508		3,655
Sales and other taxes payable	1,537		3,125
Other	10,851		12,954
Total	$	214,680	$	245,901

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Deferred Revenue

6 Months Ended

Mar. 31, 2018

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 setup 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):

	March 31, 2018		September 30, 2017
Current liabilities:
Deferred maintenance revenue	$	170,849	$	162,958
Unearned revenue	242,277		203,084
Total current deferred revenue	$	413,126	$	366,042
Long-term liabilities:
Deferred maintenance revenue	$	62,744	$	60,298
Unearned revenue	406,831		363,631
Total long-term deferred revenue	$	469,575	$	423,929

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Restructuring and Other Charges, net

6 Months Ended

Mar. 31, 2018

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, or arise outside of the ordinary course of our business.

The following table sets forth accrual activity relating to restructuring reserves for the six months endedMarch 31, 2018 (dollars in thousands):

	Personnel			Facilities			Total
Balance at September 30, 2017	$	1,546		$	9,159		$	10,705
Restructuring charges, net	8,670			3,012			11,682
Non-cash adjustment	—			(754		)	(754		)
Cash payments	(8,862		)	(2,897		)	(11,759		)
Balance at March 31, 2018	$	1,354		$	8,520		$	9,874

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 March 31,
	2018											2017
	Personnel		Facilities			Total Restructuring		Other Charges		Total		Personnel		Facilities		Total Restructuring		Other Charges		Total
Healthcare	$	788	$	—		$	788	$	—	$	788	$	577	$	593	$	1,170	$	—	$	1,170
Enterprise	265		7			272		—		272		388		257		645		—		645
Automotive	849		—			849		—		849		1,247		—		1,247		—		1,247
Imaging	83		(16		)	67		—		67		225		36		261		—		261
Other	1,095		558			1,653		—		1,653		1,806		51		1,857		10,773		12,630
Corporate	707		798			1,505		3,814		5,319		332		1,318		1,650		2,308		3,958
Total	$	3,787	$	1,347		$	5,134	$	3,814	$	8,948	$	4,575	$	2,255	$	6,830	$	13,081	$	19,911

	Six Months Ended March 31,
	2018											2017
	Personnel		Facilities			Total Restructuring		Other Charges		Total		Personnel		Facilities		Total Restructuring		Other Charges		Total
Healthcare	$	3,301	$	25		$	3,326	$	—	$	3,326	$	2,561	$	870	$	3,431	$	—	$	3,431
Enterprise	527		2,367			2,894		—		2,894		812		864		1,676		—		1,676
Automotive	1,000		—			1,000		—		1,000		1,415		—		1,415		—		1,415
Imaging	1,306		(7		)	1,299		—		1,299		586		387		973		—		973
Other	1,344		569			1,913		—		1,913		1,850		51		1,901		10,773		12,674
Corporate	1,192		58			1,250		12,067		13,317		1,000		1,982		2,982		3,463		6,445
Total	$	8,670	$	3,012		$	11,682	$	12,067	$	23,749	$	8,224	$	4,154	$	12,378	$	14,236	$	26,614

FiscalYear2018

For the six months endedMarch 31, 2018, we recorded restructuring charges of $11.7 million, which included $8.7 million related to the termination of approximately 400 employees and $3.0 million related to certain excess facilities. Of these amounts, $5.1 million was recorded for the three months ended March 31, 2018, including $3.8 million related to employee termination and $1.3 million related to certain excess facilities. These actions were part of our strategic initiatives focused on investment rationalization, process optimization and cost reduction. We expect the remaining outstanding severance of $1.4 million to be substantially paid during fiscal year 2018, and the remaining balance of $8.5 million related to excess facilities to be paid through fiscal year 2025, in accordance with the terms of the applicable leases.

Additionally, for the six months endedMarch 31, 2018, we recorded $4.6 million related to the transition agreement of our former CEO and $7.5 million related to our remediation and restoration efforts after the malware incident that occurred in the third quarter of fiscal year 2017 (the "2017 Malware Incident"). Of these amounts, $2.3 million related to the CEO transition and $1.5 million related to the 2017 Malware Incident were recorded for the three months ended March 31, 2018. The cash payments associated with the CEO transition agreement are expected to be made through fiscal year 2020.

FiscalYear2017

For the six months endedMarch 31, 2017, we recorded restructuring charges of $12.4 million, which included $8.2 million related to the termination of approximately 220 employees and $4.2 million related to certain excess facilities. Of these amounts, $6.8 million was recorded for the three months ended March 31, 2017, including $4.6 million related to employee termination and $2.3 million related to certain excess facilities. These actions were part of our strategic initiatives focused on process optimization and cost reduction.

Additionally, for the six months endedMarch 31, 2017, we recorded $3.5 million related to the transition agreement of our former CEO and $10.8 million of non-cash impairment charge related to an internally developed software. Of these amounts, $2.3 million related to the CEO transition and $10.8 million of non-cash impairment charge were recorded for the three months ended March 31, 2017.

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Debt and Credit Facilities

6 Months Ended

Mar. 31, 2018

Debt Disclosure [Abstract]

Debt and Credit Facilities

Debt

At March 31, 2018 and September 30, 2017, we had the following borrowing obligations (dollars in thousands):

	March 31, 2018			September 30, 2017
5.625% Senior Notes due 2026, net of deferred issuance costs of $5.4 million and $5.7 million, respectively. Effective interest rate 5.625%.	$	494,607		$	494,298
5.375% Senior Notes due 2020, net of unamortized premium of $0.8 million and $1.0 million, respectively, and deferred issuance costs of $1.9 million and $2.3 million, respectively. Effective interest rate 5.375%.	448,868			448,630
6.000% Senior Notes due 2024, net of deferred issuance costs of $1.9 million and $2.1 million, respectively. Effective interest rate 6.000%.	298,065			297,910
1.00% Convertible Debentures due 2035, net of unamortized discount of $129.1 million and $140.9 million, respectively, and deferred issuance costs of $6.3 million and $6.9 million, respectively. Effective interest rate 5.622%.	541,164			528,690
2.75% Convertible Debentures due 2031, net of unamortized discount of $1.5 million and deferred issuance costs of $0.1 million as of September 30, 2017. Effective interest rate 7.432%.	46,568			376,121
1.25% Convertible Debentures due 2025, net of unamortized discount of $87.6 million and $92.7 million, respectively, and deferred issuance costs of $4.0 million and $4.3 million, respectively. Effective interest rate 5.578%.	258,387			253,054
1.50% Convertible Debentures due 2035, net of unamortized discount of $37.7 million and $42.5 million, respectively, and deferred issuance costs of $1.3 million and $1.5 million, respectively. Effective interest rate 5.394%.	224,833			219,875
Deferred issuance costs related to our Revolving Credit Facility	(1,008		)	(1,174		)
Total debt	2,311,484			2,617,404
Less: current portion	—			376,121
Total long-term debt	$	2,311,484		$	2,241,283

The following table summarizes the maturities of our borrowing obligations as of March 31, 2018 (dollars in thousands):

Fiscal Year	Convertible Debentures(1)			Senior Notes			Total
2018	$	—		$	—		$	—
2019	—			—			—
2020	—			450,000			450,000
2021	—			—			—
2022	310,463			—			310,463
Thereafter	1,026,488			800,000			1,826,488
Total before unamortized discount	1,336,951			1,250,000			2,586,951
Less: unamortized discount and issuance costs	(265,999		)	(9,468		)	(275,467		)
Total long-term debt	$	1,070,952		$	1,240,532		$	2,311,484

⁽¹⁾  Pursuant to the terms of each convertible instrument, holders have the right to redeem the debt on specific dates prior to maturity. The repayment schedule above assumes that payment is due on the next redemption date after March 31, 2018.

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.

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 $18.6 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.

At any time on or after August 15, 2018, we may redeem any or all or a portion of the 2020 Senior Notes at a redemption price equal to 100% of the aggregate principal amount, plus any accrued and unpaid interest to, but excluding, the redemption date.

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.

At any time before July 1, 2019, we may redeem all or a portion of the 2024 Senior Notes at a redemption price equal to100% of the aggregate principal amount of the 2024 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 July 1, 2019, we may redeem all or a portion of the 2024 Senior Notes at certain redemption prices expressed as percentages of the principal amount, plus accrued and unpaid interest to, but excluding, the redemption date.

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 March 31, 2018, 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 remained outstanding as of September 30, 2017, which was included within the total current liabilities.

In November 2017, holders of approximately $331.2 million in aggregate principal amount of the outstanding 2031 Debentures exercised their right to require us to repurchase such debentures. Following the repurchase, $46.6 million in aggregate principal amount of the 2031 Debentures remains outstanding. On or after November 6, 2017, we have the right to call for redemption of some or all of the remaining outstanding 2031 Debentures.

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 used the remaining net proceeds, together with cash on hand to redeem and retire $331.2 million of our 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 March 31, 2018, 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 March 31, 2018, 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

Our revolving credit agreement (the “Revolving Credit Facility”), which expires on April 15, 2021, provides for aggregate borrowing commitments of $242.5 million, including the revolving facility loans, the swingline loans and issuance of letters of credit. As of March 31, 2018, after taking into account the outstanding letters of credit of $4.1 million, we had $238.4 million available for borrowing under the Revolving Credit Facility. The borrowing outstanding under the Revolving Credit Facility bears 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 our assets. The Revolving Credit Facility contains customary affirmative and negative covenants and conditions to borrowing, as well as customary events of default. As of March 31, 2018, we are in compliance with all the debt covenants.

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Stockholders' Equity Stockholders' Equity (Notes)

6 Months Ended

Mar. 31, 2018

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. On April 29, 2015, our Board of Directors approved an additional $500.0 million under our share repurchase program. Under the terms of the share repurchase program, we have the ability to repurchase shares 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.

There were no share repurchases for the six months endedMarch 31, 2018. For the six months endedMarch 31, 2017, we repurchased 5.8 million shares of our common stock for $99.1 million under the program. Since the commencement of the program, we have repurchased an aggregate of 46.5 million shares for $806.6 million. The amount paid in excess of par value is recognized in additional paid in capital. Shares were retired upon repurchase. As of March 31, 2018, approximately $193.4 million remained available for future repurchases under the program.

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Net Income (Loss) Per Share

6 Months Ended

Mar. 31, 2018

Earnings Per Share, Basic and Diluted [Abstract]

Net (Loss) Income Per Share

Net Loss Per Share

The following table sets forth the computation for basic and diluted net loss per share (dollars in thousands, except per share amounts):

	Three Months Ended March 31,						Six Months Ended March 31,
	2018			2017			2018			2017
Numerator:
Net loss	$	(164,053	)	$	(33,808	)	$	(110,825	)	$	(57,736	)
Denominator:
Weighted average common shares outstanding — Basic	294,103			291,021			292,720			289,976
Dilutive effect of employee stock compensation plans (a)	—			—			—			—
Weighted average common shares outstanding — Diluted	294,103			291,021			292,720			289,976
Net loss per share:
Basic	$	(0.56	)	$	(0.12	)	$	(0.38	)	$	(0.20	)
Diluted	$	(0.56	)	$	(0.12	)	$	(0.38	)	$	(0.20	)
Anti-dilutive equity instruments excluded from the calculation	2,679			3,875			4,178			5,126
Contingently issuable awards excluded from the calculation (b)	2,836			4,334			2,387			3,478

^(a) For all periods presented, there is no dilutive effect of equity instruments as the impact of these items is anti-dilutive due to the net loss incurred.

^(b) Contingently issuable awards were excluded from the determination of dilutive net income per share as the conditions were not met at the end of the reporting period.

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Stock-Based Compensation

6 Months Ended

Mar. 31, 2018

Share-based Compensation [Abstract]

Stock-Based Compensation

Stock-Based Compensation

As of March 31, 2018, we had 13.5 million shares available for future grants under the amended and restated 2000 stock plan. We recognize stock-based compensation expenses over the requisite service periods. Our share-based awards are classified within equity. The amounts included in the condensed consolidated statements of operations related to stock-based compensation are as follows (dollars in thousands):

	Three Months Ended March 31,				Six Months Ended March 31,
	2018		2017		2018		2017
Cost of professional services and hosting	$	6,322	$	8,080	$	13,729	$	16,490
Cost of product and licensing	112		102		378		194
Cost of maintenance and support	885		1,010		2,089		1,987
Research and development	8,396		8,398		18,092		16,888
Sales and marketing	8,366		11,018		19,042		22,987
General and administrative	9,668		11,740		18,405		20,932
Total	$	33,749	$	40,348	$	71,735	$	79,478

Stock Options

The table below summarizes activities related to stock options for the six months endedMarch 31, 2018:

	Number of Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term	Aggregate Intrinsic Value(a)
Outstanding at September 30, 2017	23,807		$	15.39
Exercised	(1,859	)	$	3.41
Outstanding at March 31, 2018	21,948		$	16.40	2.6 years	$	0.1	million
Exercisable at March 31, 2018	21,939		$	16.41	2.6 years	$	0.1	million
Exercisable at March 31, 2017	1,042,671		$	16.36	0.7 years	$	1.0	million

^(a)  The aggregate intrinsic value in this table represents any excess of the closing market price of our common stock as of March 31, 2018 ($15.75) over the exercise price of the underlying options.

The aggregate intrinsic value of stock options exercised during the six months endedMarch 31, 2018 and 2017 was $0.02 million and $0.8 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 activities relating to restricted units for the six months endedMarch 31, 2018:

	Number of Shares Underlying Restricted Units — Contingent Awards		Number of Shares Underlying Restricted Units — Time-Based Awards
Outstanding at September 30, 2017	5,043,931		6,477,164
Granted	1,784,982		6,005,863
Earned/released	(1,687,862	)	(4,176,917	)
Forfeited	(1,236,037	)	(457,533	)
Outstanding at March 31, 2018	3,905,014		7,848,577
Weighted average remaining recognition period of outstanding restricted units	1.1 years		1.8 years
Unrecognized stock-based compensation expense of outstanding restricted units	$48.3 million		$86.0 million
Aggregate intrinsic value of outstanding restricted units(a)	$61.5 million		$123.7 million

^(a)  The aggregate intrinsic value in this table represents any excess of the closing market price of our common stock as of March 31, 2018 ($15.75) over the purchase price of the underlying restricted units.

A summary of the weighted-average grant-date fair value of restricted units granted, and the aggregate intrinsic value of restricted units vested during the periods noted is as follows:

	Six Months Ended March 31,
	2018		2017
Weighted-average grant-date fair value per share	$	15.67	$	16.05
Total intrinsic value of shares vested (in millions)	$	94.0	$	99.5

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Income Taxes

6 Months Ended

Mar. 31, 2018

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

The components of loss before income taxes are as follows (dollars in thousands):

	Three Months Ended March 31,						Six Months Ended March 31,
	2018			2017			2018			2017
Domestic	$	(79,921	)	$	(41,803	)	$	(119,952	)	$	(89,386	)
Foreign	(81,588		)	17,136			(66,850		)	51,144
Loss before income taxes	$	(161,509	)	$	(24,667	)	$	(186,802	)	$	(38,242	)

The components of provision (benefit) for income taxes are as follows (dollars in thousands):

	Three Months Ended March 31,						Six Months Ended March 31,
	2018			2017			2018			2017
Domestic	$	5,197		$	4,822		$	(75,669	)	$	8,981
Foreign	(2,653		)	4,319			(308		)	10,513
Provision (benefit) for income taxes	$	2,544		$	9,141		$	(75,977	)	$	19,494
Effective tax rate	(1.6		)%	(37.1		)%	40.7		%	(51.0		)%

On December 22, 2017, the Tax Cuts and Jobs Act ("TCJA") was signed into law. The TCJA significantly revises the U.S. corporate income tax by, among other things, lowering corporate income tax rates, implementing a hybrid territorial tax system, and imposing a mandatory one-time repatriation tax on foreign cash and earnings.

As a result of the TCJA, we remeasured certain deferred tax assets and liabilities at the lower rates and recorded approximately $87.0 million of tax benefits for the six months ended March 31, 2018, which also reflected an expense of $10.0 million for the three months ended March 31, 2018 as we revised our estimates of the timing and amounts of the temporary differences. Additionally, we recorded a $2.0 million provision for the deemed repatriation of foreign cash and earnings for the six months ended March 31, 2018, which also reflected a benefit of $12.0 million for the three months ended March 31, 2018 as we revised our estimates of foreign earnings and profits related to the mandatory repatriation tax.

The provisional amounts above were based upon the estimates of (i) temporary differences at the end of the upcoming tax year, (ii) the timing the temporary differences are expected to reverse, (iii) foreign earnings and profits, and (iv) foreign income taxes. The assessment is incomplete as of March 31, 2018. As our assessment is ongoing, these amounts may materially change as we revise our assumptions and estimates based on new information available to us, changes in our interpretations, additional guidance to be issued, and actions we may take as a result of the TCJA. We are still evaluating the full impact of other provisions of the TCJA, which may materially increase or decrease our income tax provision. The assessment is expected to be completed no later than the first quarter of fiscal year 2019.

In addition, as more fully described in Note 4, in connection with the impairment charge of SRS's goodwill, we recognized a tax benefit of $8.5 million related to the portion of deductible goodwill in Brazil for the three and six months ended March 31, 2018.

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Commitments and Contingencies

6 Months Ended

Mar. 31, 2018

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 at times actions with respect to contracts, intellectual property, employment, benefits and securities matters. At each balance sheet date we evaluate contingent liabilities associated with these matters in accordance with ASC 450 “Contingencies.” If the potential loss from any claim or legal proceeding is considered probable and the amount can be reasonably estimated, we accrue a liability for the estimated loss. Significant judgments are required for the determination of probability and the range of the outcomes, and estimates are based only on the best information available at the time. Due to the inherent uncertainties involved in claims and legal proceedings and in estimating losses that may arise, actual outcomes may differ from our estimates. Contingencies deemed not probable or for which losses were not estimable in one period may become probable, or losses may become estimable in later periods, which may have a material impact on our results of operations and financial position. As of March 31, 2018, accrued losses were not material to our condensed consolidated financial statements, and we do not expect any pending matter to have a material impact on our condensed consolidated financial statements.

Guarantees and Other

We include indemnification provisions in the contracts we enter with customers and business partners. 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 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.

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Segment and Geographic Information and Significant Customers

6 Months Ended

Mar. 31, 2018

Segment Reporting [Abstract]

Segment and Geographic Information and Significant Customers

Segment and Geographic Information

During the first quarter of fiscal year 2018, we commenced a reorganization of our segment reporting structure to allow our Chief Operating Decision Maker ("CODM") greater focus on implementing strategic initiatives and identifying future investment opportunities. During the second quarter of fiscal year 2018, we established our Automotive business as a separate operating segment. Additionally, we moved our Dragon TV business from our Mobile operating segment into our Enterprise operating segment to consolidate our telecommunications market resources. Finally, our SRS business and our Devices business, originally included within our Mobile operating segment, are now presented within our Other segment. As a result, segment information for the three and six months ended March 31, 2018 and 2017 has been recast to reflect the new segment reporting structure.

Our CODM regularly reviews segment revenues and segment profits for performance evaluation and resources allocation. Segment revenues include certain acquisition-related adjustments for revenues that would otherwise have been recognized without the acquisition. Segment profits reflect controllable costs directly related to each segment and the allocation of certain corporate expenses such as, corporate sales and marketing expenses and research and development project costs that benefit multiple segments. Certain items such as stock-based compensation, amortization of intangible assets, acquisition-related costs, net, restructuring and other charges, net, other expenses, net and certain unallocated corporate expenses are excluded from segment profits, which allow for more meaningful comparisons to the financial results of the historical operations for performance evaluation and resources allocation by our CODM.

• The Healthcare segment is primarily engaged in providing 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 Enterprise segment is primarily engaged in using speech, natural language understanding, and artificial intelligence to provide automated customer solutions and services for voice, mobile, web and messaging channels.

• The Automotive segment is primarily engaged in providing automotive manufacturers and their suppliers branded and personalized virtual assistants and connected car services built on our voice recognition and natural language understanding technologies.

• 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.

• The Other segment includes our SRS business and our Devices business. Our SRS business provides value-added services to mobile operators in emerging markets, primarily in India and Brazil. Our Devices business provides speech recognition solutions and predictive text technologies to handset devices.

We do not track our assets by segment. Consequently, it is not practical to show assets or depreciation by 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						Six Months Ended
	March 31,						March 31,
	2018			2017			2018			2017
Segment revenues:
Healthcare	$	261,239		$	238,466		$	506,775		$	477,673
Enterprise	112,668			122,126			233,266			237,504
Automotive	68,950			61,725			130,448			120,600
Imaging	48,933			53,048			104,563			105,137
Other	26,524			35,732			52,087			66,201
Total segment revenues	518,314			511,097			1,027,139			1,007,115
Less: acquisition-related revenues adjustments	(4,090		)	(11,524		)	(11,270		)	(19,884		)
Total revenues	514,224			499,573			1,015,869			987,231
Segment profit:
Healthcare	87,350			83,328			164,769			161,896
Enterprise	25,722			40,349			63,451			70,267
Automotive	28,875			29,312			52,082			56,942
Imaging	12,257			18,470			27,900			36,086
Other	6,084			12,548			9,505			20,430
Total segment profit	160,288			184,007			317,707			345,621
Corporate expenses and other, net	(65,093		)	(30,186		)	(109,757		)	(61,148		)
Acquisition-related revenues	(4,090		)	(11,524		)	(11,270		)	(19,884		)
Stock-based compensation	(33,749		)	(40,348		)	(71,735		)	(79,478		)
Amortization of intangible assets	(37,450		)	(45,130		)	(75,870		)	(88,531		)
Acquisition-related costs, net	(2,360		)	(5,379		)	(7,921		)	(14,405		)
Restructuring and other charges, net	(8,948		)	(19,911		)	(23,749		)	(26,614		)
Impairment of goodwill	(137,907		)	—			(137,907		)	—
Other expenses, net	(32,200		)	(56,196		)	(66,300		)	(93,803		)
Loss before income taxes	$	(161,509	)	$	(24,667	)	$	(186,802	)	$	(38,242	)

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				Six Months Ended
	March 31,				March 31,
	2018		2017		2018		2017
United States	$	367,613	$	352,937	$	731,899	$	702,107
International	146,611		146,636		283,970		285,124
Total revenues	$	514,224	$	499,573	$	1,015,869	$	987,231

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Supplemental Cash Flow (Notes)

6 Months Ended

Mar. 31, 2018

Supplemental Cash Flow [Abstract]

Cash Flow, Supplemental Disclosures [Text Block]

18. Supplemental Cash Flow Information

Cash paid for Interest and Income Taxes:

	Three Months Ended March 31,				Six Months Ended March 31,
	2018		2017		2018		2017
	(Dollars in thousands)
Interest paid	$	21,427	$	34,814	$	48,708	$	45,883
Income taxes paid	$	4,233	$	4,432	$	8,833	$	8,636

Non-Cash Investing and Financing Activities:

From time to time, we issue shares of our common stock in connection with our business and asset acquisitions, including shares issued as payment for acquisitions, shares initially held in escrow, and shares issued as payment for contingent consideration, as more fully described in Note 3.

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Related Party Transaction (Notes)

6 Months Ended

Mar. 31, 2018

Related Party Transaction [Line Items]

Related Party Transactions Disclosure [Text Block]

16. Related Party Transaction

In January 2018, we entered into a software and license agreement (the "License Agreement") with Magnet Systems, Inc. ("Magnet"). A member of the Magnet board of directors also served on our board of directors at the time of the transaction. Pursuant to the License Agreement, Magnet granted Nuance a perpetual software license to certain technology for a one-time payment of $5.0 million in cash, with $3.5 million paid immediately upon the effective date of the License Agreement and $1.5 million payable upon the earlier of (i) the 120-day period following the effective date of the License Agreement or (ii) signature of a statement of work for the engineering services described below.

Additionally, we entered into a service agreement (the "Service Agreement") with Magnet, pursuant to which, Magnet will provide engineering services to assist in integrating the licensed technology into certain of our Enterprise solutions. The fees under the Service Agreement total $2.0 million, payable in six equal monthly installments upon the signature of the statement of work, which is to be finalized within 90 days following the effective date of the License Agreement.

As of March 31, 2018, $1.5 million related to the software license was included within Contingent and Deferred acquisition payments.

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Summary of Significant Accounting Policies Recently Issued Accounting Pronouncements (Tables)

6 Months Ended

Mar. 31, 2018

Recently Issued Accounting Pronouncements [Abstract]

New Accounting Pronouncements, Policy [Policy Text Block]

Recently Issued Accounting Standards

In January 2018, the FASB issued ASU 2018-02, "Income Statement — Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income ("AOCI"), which is effective for fiscal years beginning after December 15, 2018 and interim periods therein, with early adoption permitted. The guidance gives entities the option to reclassify to retained earnings the tax effects resulting from the Tax Cuts and Jobs Act ("TCJA") related to items in AOCI. The new guidance may be applied retrospectively to each period in which the effect of the Act is recognized in the period of adoption. We do not expect the implementation to have a material impact on our consolidated financial statements.

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 is effective for fiscal years beginning after December 15, 2017 and the interim periods therein, with early adoption permitted. The guidance requires cash flows with multiple characteristics to be classified using a three-step process, including (i) determining whether explicit guidance is applicable, (ii) separating each identifiable source or use of cash flows, and (iii) determining the predominant source or use of cash flows when the source or use of cash flows cannot be separately identifiable. The guidance will be applied retrospectively to each period presented. We do not expect the implementation to have a material impact on our consolidated financial statements.

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. While we are continuing to assess all potential impacts of the new standard, we currently believe the most significant impact relates to our accounting for arrangements that include term-based software licenses bundled with maintenance and support. Under current GAAP, the revenue attributable to these software licenses is recognized ratably over the term of the arrangement because vendor-specific objective evidence ("VSOE") does not exist for the undelivered maintenance and support element as it is not sold separately. The requirement to have VSOE for undelivered elements to enable the separation of revenue for the delivered software licenses is eliminated under the new standard. Accordingly, under the new standard we will be required to recognize as revenue a portion of the arrangement fee upon delivery of the software license. While we currently expect revenue related to our professional services and cloud offerings to remain substantially unchanged, we are still in the process of evaluating the impact of the new standard on these arrangements. We plan to adopt this guidance beginning on October 1, 2018 and apply the cumulative catch-up transition method, with a cumulative adjustment to retained earnings as opposed to retrospectively adjusting prior periods.

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Goodwill and Intangible Assets (Tables)

6 Months Ended

Mar. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Carrying Amount of Goodwill and Intangible Assets

The changes in the carrying amount of goodwill by reportable segment for the six months endedMarch 31, 2018 are as follows (dollars in thousands):

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Financial Instruments and Hedging Activities (Tables)

6 Months Ended

Mar. 31, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Quantitative Summary of Fair Value of Derivative Instruments

A summary of the derivative instruments as of March 31, 2018 and September 30, 2017 is as follows (dollars in thousands):

Derivatives Not Designated as Hedges	Balance Sheet Classification	Fair Value
		March 31, 2018			September 30, 2017
Foreign currency forward contracts	Prepaid expenses and other current assets	$	325		$	220
Foreign currency forward contracts	Accrued expenses and other current liabilities	(374		)	(373		)

Summarized Activity of Derivative Instruments

A summary of loss related to the derivative instruments for the six months endedMarch 31, 2018 and 2017 is as follows (dollars in thousands):

	Income Statement Classification	Three Months Ended March 31,					Six Months Ended March 31,
Derivatives Not Designated as Hedges	Income (loss) recognized	2018			2017		2018			2017
Foreign currency forward contracts	Other expense, net	$	(785	)	$	3,555	$	(1,182	)	$	(8,060	)

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Fair Value Measures (Tables)

6 Months Ended

Mar. 31, 2018

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 March 31, 2018 and September 30, 2017 consisted of the following (dollars in thousands):

	March 31, 2018
	Level 1		Level 2			Level 3			Total
Assets:
Money market funds(a)	$	342,877	$	—		$	—		$	342,877
Time deposits(b)	—		97,421			—			97,421
Commercial paper, $42,987 at cost(b)	—		43,084			—			43,084
Corporate notes and bonds, $79,574 at cost(b)	—		79,116			—			79,116
Foreign currency exchange contracts(b)	—		325			—			325
Total assets at fair value	$	342,877	$	219,946		$	—		$	562,823
Liabilities:
Foreign currency exchange contracts(b)	$	—	$	(374	)	$	—		$	(374	)
Contingent acquisition payments(c)	—		—			(11,752		)	(11,752		)
Total liabilities at fair value	$	—	$	(374	)	$	(11,752	)	$	(12,126	)

	September 30, 2017
	Level 1		Level 2			Level 3			Total
Assets:
Money market funds(a)	$	381,899	$	—		$	—		$	381,899
Time deposits(b)	—		85,570			—			85,570
Commercial paper, $41,805 at cost(b)	—		41,968			—			41,968
Corporate notes and bonds, $74,150 at cost(b)	—		74,067			—			74,067
Foreign currency exchange contracts(b)	—		220			—			220
Total assets at fair value	$	381,899	$	201,825		$	—		$	583,724
Liabilities:
Foreign currency exchange contracts(b)	$	—	$	(373	)	$	—		$	(373	)
Contingent acquisition payments(c)	—		—			(8,648		)	(8,648		)
Total liabilities at fair value	$	—	$	(373	)	$	(8,648	)	$	(9,021	)

Changes in Fair Value of Contingent Earn-Out Liabilities

The following table provides a summary of changes in the aggregate fair value of the contingent acquisition payments for all periods presented (dollars in thousands):

	Three Months Ended March 31,						Six Months Ended March 31,
	2018			2017			2018			2017
Balance at beginning of period	$	10,431		$	8,961		$	8,648		$	8,240
Earn-out liabilities established at time of acquisition	—			1,600			500			3,253
Payments and foreign currency translation	(79		)	(2,759		)	(96		)	(4,257		)
Adjustments to fair value included in acquisition-related costs, net	1,400			(1,425		)	2,700			(859		)
Balance at end of period	$	11,752		$	6,377		$	11,752		$	6,377

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Accrued Expenses and Other Current Liabilities (Tables)

6 Months Ended

Mar. 31, 2018

Payables and Accruals [Abstract]

Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following (dollars in thousands):

	March 31, 2018		September 30, 2017
Compensation	$	119,683	$	159,951
Cost of revenue related liabilities	26,036		20,124
Consulting and professional fees	24,741		12,649
Accrued interest payable	22,318		26,285
Facility-related liabilities	5,006		7,158
Sales and marketing incentives	4,508		3,655
Sales and other taxes payable	1,537		3,125
Other	10,851		12,954
Total	$	214,680	$	245,901

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Deferred Revenue (Tables)

6 Months Ended

Mar. 31, 2018

Deferred Revenue [Abstract]

Deferred Revenue

Deferred revenue consisted of the following (dollars in thousands):

	March 31, 2018		September 30, 2017
Current liabilities:
Deferred maintenance revenue	$	170,849	$	162,958
Unearned revenue	242,277		203,084
Total current deferred revenue	$	413,126	$	366,042
Long-term liabilities:
Deferred maintenance revenue	$	62,744	$	60,298
Unearned revenue	406,831		363,631
Total long-term deferred revenue	$	469,575	$	423,929

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Restructuring and Other Charges, net (Tables)

6 Months Ended

Mar. 31, 2018

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 six months endedMarch 31, 2018 (dollars in thousands):

	Personnel			Facilities			Total
Balance at September 30, 2017	$	1,546		$	9,159		$	10,705
Restructuring charges, net	8,670			3,012			11,682
Non-cash adjustment	—			(754		)	(754		)
Cash payments	(8,862		)	(2,897		)	(11,759		)
Balance at March 31, 2018	$	1,354		$	8,520		$	9,874

Restructuring and Other Charges, Net by Segment

	Six Months Ended March 31,
	2018											2017
	Personnel		Facilities			Total Restructuring		Other Charges		Total		Personnel		Facilities		Total Restructuring		Other Charges		Total
Healthcare	$	3,301	$	25		$	3,326	$	—	$	3,326	$	2,561	$	870	$	3,431	$	—	$	3,431
Enterprise	527		2,367			2,894		—		2,894		812		864		1,676		—		1,676
Automotive	1,000		—			1,000		—		1,000		1,415		—		1,415		—		1,415
Imaging	1,306		(7		)	1,299		—		1,299		586		387		973		—		973
Other	1,344		569			1,913		—		1,913		1,850		51		1,901		10,773		12,674
Corporate	1,192		58			1,250		12,067		13,317		1,000		1,982		2,982		3,463		6,445
Total	$	8,670	$	3,012		$	11,682	$	12,067	$	23,749	$	8,224	$	4,154	$	12,378	$	14,236	$	26,614

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Debt and Credit Facilities (Tables)

6 Months Ended

Mar. 31, 2018

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 March 31, 2018 (dollars in thousands):

Fiscal Year	Convertible Debentures(1)			Senior Notes			Total
2018	$	—		$	—		$	—
2019	—			—			—
2020	—			450,000			450,000
2021	—			—			—
2022	310,463			—			310,463
Thereafter	1,026,488			800,000			1,826,488
Total before unamortized discount	1,336,951			1,250,000			2,586,951
Less: unamortized discount and issuance costs	(265,999		)	(9,468		)	(275,467		)
Total long-term debt	$	1,070,952		$	1,240,532		$	2,311,484

⁽¹⁾  Pursuant to the terms of each convertible instrument, holders have the right to redeem the debt on specific dates prior to maturity. The repayment schedule above assumes that payment is due on the next redemption date after March 31, 2018.

Borrowing Obligations and Applicable Margin for Borrowings

At March 31, 2018 and September 30, 2017, we had the following borrowing obligations (dollars in thousands):

	March 31, 2018			September 30, 2017
5.625% Senior Notes due 2026, net of deferred issuance costs of $5.4 million and $5.7 million, respectively. Effective interest rate 5.625%.	$	494,607		$	494,298
5.375% Senior Notes due 2020, net of unamortized premium of $0.8 million and $1.0 million, respectively, and deferred issuance costs of $1.9 million and $2.3 million, respectively. Effective interest rate 5.375%.	448,868			448,630
6.000% Senior Notes due 2024, net of deferred issuance costs of $1.9 million and $2.1 million, respectively. Effective interest rate 6.000%.	298,065			297,910
1.00% Convertible Debentures due 2035, net of unamortized discount of $129.1 million and $140.9 million, respectively, and deferred issuance costs of $6.3 million and $6.9 million, respectively. Effective interest rate 5.622%.	541,164			528,690
2.75% Convertible Debentures due 2031, net of unamortized discount of $1.5 million and deferred issuance costs of $0.1 million as of September 30, 2017. Effective interest rate 7.432%.	46,568			376,121
1.25% Convertible Debentures due 2025, net of unamortized discount of $87.6 million and $92.7 million, respectively, and deferred issuance costs of $4.0 million and $4.3 million, respectively. Effective interest rate 5.578%.	258,387			253,054
1.50% Convertible Debentures due 2035, net of unamortized discount of $37.7 million and $42.5 million, respectively, and deferred issuance costs of $1.3 million and $1.5 million, respectively. Effective interest rate 5.394%.	224,833			219,875
Deferred issuance costs related to our Revolving Credit Facility	(1,008		)	(1,174		)
Total debt	2,311,484			2,617,404
Less: current portion	—			376,121
Total long-term debt	$	2,311,484		$	2,241,283

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Net Income (Loss) Per Share (Tables)

6 Months Ended

Mar. 31, 2018

Net Income (Loss) per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

The following table sets forth the computation for basic and diluted net loss per share (dollars in thousands, except per share amounts):

	Three Months Ended March 31,						Six Months Ended March 31,
	2018			2017			2018			2017
Numerator:
Net loss	$	(164,053	)	$	(33,808	)	$	(110,825	)	$	(57,736	)
Denominator:
Weighted average common shares outstanding — Basic	294,103			291,021			292,720			289,976
Dilutive effect of employee stock compensation plans (a)	—			—			—			—
Weighted average common shares outstanding — Diluted	294,103			291,021			292,720			289,976
Net loss per share:
Basic	$	(0.56	)	$	(0.12	)	$	(0.38	)	$	(0.20	)
Diluted	$	(0.56	)	$	(0.12	)	$	(0.38	)	$	(0.20	)
Anti-dilutive equity instruments excluded from the calculation	2,679			3,875			4,178			5,126
Contingently issuable awards excluded from the calculation (b)	2,836			4,334			2,387			3,478

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Stock-Based Compensation (Tables)

6 Months Ended

Mar. 31, 2018

Share-based Compensation [Abstract]

Stock Based Compensation Included in Consolidated Statements of Operations

The amounts included in the condensed consolidated statements of operations related to stock-based compensation are as follows (dollars in thousands):

	Three Months Ended March 31,				Six Months Ended March 31,
	2018		2017		2018		2017
Cost of professional services and hosting	$	6,322	$	8,080	$	13,729	$	16,490
Cost of product and licensing	112		102		378		194
Cost of maintenance and support	885		1,010		2,089		1,987
Research and development	8,396		8,398		18,092		16,888
Sales and marketing	8,366		11,018		19,042		22,987
General and administrative	9,668		11,740		18,405		20,932
Total	$	33,749	$	40,348	$	71,735	$	79,478

Summary of Stock Options Activity

The table below summarizes activities related to stock options for the six months endedMarch 31, 2018:

	Number of Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term	Aggregate Intrinsic Value(a)
Outstanding at September 30, 2017	23,807		$	15.39
Exercised	(1,859	)	$	3.41
Outstanding at March 31, 2018	21,948		$	16.40	2.6 years	$	0.1	million
Exercisable at March 31, 2018	21,939		$	16.41	2.6 years	$	0.1	million
Exercisable at March 31, 2017	1,042,671		$	16.36	0.7 years	$	1.0	million

^(a)  The aggregate intrinsic value in this table represents any excess of the closing market price of our common stock as of March 31, 2018 ($15.75) over the exercise price of the underlying options.

Summary of Activity Relating to Restricted Units and Restricted Stock Awards

he table below summarizes activities relating to restricted units for the six months endedMarch 31, 2018:

	Number of Shares Underlying Restricted Units — Contingent Awards		Number of Shares Underlying Restricted Units — Time-Based Awards
Outstanding at September 30, 2017	5,043,931		6,477,164
Granted	1,784,982		6,005,863
Earned/released	(1,687,862	)	(4,176,917	)
Forfeited	(1,236,037	)	(457,533	)
Outstanding at March 31, 2018	3,905,014		7,848,577
Weighted average remaining recognition period of outstanding restricted units	1.1 years		1.8 years
Unrecognized stock-based compensation expense of outstanding restricted units	$48.3 million		$86.0 million
Aggregate intrinsic value of outstanding restricted units(a)	$61.5 million		$123.7 million

^(a)  The aggregate intrinsic value in this table represents any excess of the closing market price of our common stock as of March 31, 2018 ($15.75) over the purchase price of the underlying restricted units.

Summary of Weighted-Average Grant-Date Fair Value and Intrinsic Value of Restricted Units and Restricted Stock Awards Vested

A summary of the weighted-average grant-date fair value of restricted units granted, and the aggregate intrinsic value of restricted units vested during the periods noted is as follows:

	Six Months Ended March 31,
	2018		2017
Weighted-average grant-date fair value per share	$	15.67	$	16.05
Total intrinsic value of shares vested (in millions)	$	94.0	$	99.5

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Income Taxes (Tables)

6 Months Ended

Mar. 31, 2018

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 March 31,						Six Months Ended March 31,
	2018			2017			2018			2017
Domestic	$	(79,921	)	$	(41,803	)	$	(119,952	)	$	(89,386	)
Foreign	(81,588		)	17,136			(66,850		)	51,144
Loss before income taxes	$	(161,509	)	$	(24,667	)	$	(186,802	)	$	(38,242	)

The components of provision (benefit) for income taxes are as follows (dollars in thousands):

	Three Months Ended March 31,						Six Months Ended March 31,
	2018			2017			2018			2017
Domestic	$	5,197		$	4,822		$	(75,669	)	$	8,981
Foreign	(2,653		)	4,319			(308		)	10,513
Provision (benefit) for income taxes	$	2,544		$	9,141		$	(75,977	)	$	19,494
Effective tax rate	(1.6		)%	(37.1		)%	40.7		%	(51.0		)%

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Segment and Geographic Information and Significant Customers (Tables)

6 Months Ended

Mar. 31, 2018

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						Six Months Ended
	March 31,						March 31,
	2018			2017			2018			2017
Segment revenues:
Healthcare	$	261,239		$	238,466		$	506,775		$	477,673
Enterprise	112,668			122,126			233,266			237,504
Automotive	68,950			61,725			130,448			120,600
Imaging	48,933			53,048			104,563			105,137
Other	26,524			35,732			52,087			66,201
Total segment revenues	518,314			511,097			1,027,139			1,007,115
Less: acquisition-related revenues adjustments	(4,090		)	(11,524		)	(11,270		)	(19,884		)
Total revenues	514,224			499,573			1,015,869			987,231
Segment profit:
Healthcare	87,350			83,328			164,769			161,896
Enterprise	25,722			40,349			63,451			70,267
Automotive	28,875			29,312			52,082			56,942
Imaging	12,257			18,470			27,900			36,086
Other	6,084			12,548			9,505			20,430
Total segment profit	160,288			184,007			317,707			345,621
Corporate expenses and other, net	(65,093		)	(30,186		)	(109,757		)	(61,148		)
Acquisition-related revenues	(4,090		)	(11,524		)	(11,270		)	(19,884		)
Stock-based compensation	(33,749		)	(40,348		)	(71,735		)	(79,478		)
Amortization of intangible assets	(37,450		)	(45,130		)	(75,870		)	(88,531		)
Acquisition-related costs, net	(2,360		)	(5,379		)	(7,921		)	(14,405		)
Restructuring and other charges, net	(8,948		)	(19,911		)	(23,749		)	(26,614		)
Impairment of goodwill	(137,907		)	—			(137,907		)	—
Other expenses, net	(32,200		)	(56,196		)	(66,300		)	(93,803		)
Loss before income taxes	$	(161,509	)	$	(24,667	)	$	(186,802	)	$	(38,242	)

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				Six Months Ended
	March 31,				March 31,
	2018		2017		2018		2017
United States	$	367,613	$	352,937	$	731,899	$	702,107
International	146,611		146,636		283,970		285,124
Total revenues	$	514,224	$	499,573	$	1,015,869	$	987,231

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Supplemental Cash Flow (Tables)

6 Months Ended

Mar. 31, 2018

Supplemental Cash Flow [Abstract]

Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]

Cash paid for Interest and Income Taxes:

	Three Months Ended March 31,				Six Months Ended March 31,
	2018		2017		2018		2017
	(Dollars in thousands)
Interest paid	$	21,427	$	34,814	$	48,708	$	45,883
Income taxes paid	$	4,233	$	4,432	$	8,833	$	8,636

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Summary of Significant Accounting Policies Recently Adopted Accounting Standards (Details) $ in Millions	6 Months Ended
	Mar. 31, 2018 USD ($)
Accounting Policies [Abstract]
Other Comprehensive Income (Loss), Tax	$ 0.9

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Business Acquisitions (Summary of Preliminary Allocation of Purchase Consideration) (Detail) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Sep. 30, 2017
Allocation of the purchase consideration:
Closing market value of common stock	$ 15.75
Contingent And Deferred Acquisition Payments	$ 20,926		$ 28,860
Other Acquisitions [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross	8,700	$ 34,400
Allocation of the purchase consideration:
Goodwill	6,800	27,000
Identifiable intangible assets(c)	$ 2,000	$ 22,500
Weighted Average Useful Life, Intangible Assets Acquired	2 years	6 years 2 months
Contingent And Deferred Acquisition Payments	$ 500	$ 2,000

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Business Acquisitions (Components of Acquisition-Related Costs, Net) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Business Acquisition [Line Items]
Transition and integration costs	$ 3,367	$ 3,612	$ 7,429	$ 7,322
Professional service fees	940	2,974	1,451	7,991
Acquisition-related adjustments	(1,947)	(1,207)	(959)	(908)
Total	$ 2,360	$ 5,379	$ 7,921	$ 14,405

XML

Changes in Carrying Amount of Goodwill and Intangible Assets (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Goodwill [Line Items]
Goodwill, Transfers			$ 0
Goodwill, Impairment Loss	$ (137,907)	$ 0	(137,907)	$ 0
Goodwill [Roll Forward]
Balance at September 30, 2017			3,590,608
Goodwill, Acquired During Period			6,775
Goodwill, Purchase Accounting Adjustments			2,361
Effect of foreign currency translation			11,012
Balance at March 31, 2018	3,472,849		3,472,849
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Balance at September 30, 2017			664,474
Amortization			75,870
Effect of foreign currency translation			(164)
Balance at March 31, 2018	596,060		596,060
Healthcare
Goodwill [Line Items]
Goodwill, Transfers			0
Goodwill, Impairment Loss			0
Goodwill [Roll Forward]
Balance at September 30, 2017			1,418,334
Goodwill, Acquired During Period			6,775
Goodwill, Purchase Accounting Adjustments			(336)
Effect of foreign currency translation			1,725
Balance at March 31, 2018	1,426,498		1,426,498
Enterprise
Goodwill [Line Items]
Goodwill, Transfers			11,991
Goodwill, Impairment Loss			0
Goodwill [Roll Forward]
Balance at September 30, 2017			673,472
Goodwill, Acquired During Period			0
Goodwill, Purchase Accounting Adjustments			0
Effect of foreign currency translation			3,536
Balance at March 31, 2018	688,999		688,999
Automotive
Goodwill [Line Items]
Goodwill, Transfers			1,080,453
Goodwill, Impairment Loss			0
Goodwill [Roll Forward]
Balance at September 30, 2017			0
Goodwill, Acquired During Period			0
Goodwill, Purchase Accounting Adjustments			0
Effect of foreign currency translation			0
Balance at March 31, 2018	1,080,453		1,080,453
Imaging
Goodwill [Line Items]
Goodwill, Transfers			0
Goodwill, Impairment Loss			0
Goodwill [Roll Forward]
Balance at September 30, 2017			257,792
Goodwill, Acquired During Period			0
Goodwill, Purchase Accounting Adjustments			0
Effect of foreign currency translation			407
Balance at March 31, 2018	258,199		258,199
Other
Goodwill [Line Items]
Goodwill, Transfers			156,607
Goodwill, Impairment Loss			(137,907)
Goodwill [Roll Forward]
Balance at September 30, 2017			0
Goodwill, Acquired During Period			0
Goodwill, Purchase Accounting Adjustments			0
Effect of foreign currency translation			0
Balance at March 31, 2018	$ 18,700		$ 18,700

XML

Goodwill and Intangible Assets Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017	Sep. 30, 2017
Finite-Lived Intangible Assets [Line Items]
Intangible assets, net	$ 596,060		$ 596,060		$ 664,474
Amortization of intangible assets			(75,870)
Finite Lived Intangible Assets, Foreign Currency Translation Gain (Loss)			$ (164)
Document Period End Date			Mar. 31, 2018
Goodwill	3,472,849		$ 3,472,849		3,590,608
Goodwill, Impairment Loss	137,907	$ 0	137,907	$ 0
Goodwill, Foreign Currency Translation Gain (Loss)			11,012
Goodwill, Acquired During Period			6,775
Goodwill, Purchase Accounting Adjustments			2,361
Goodwill, Transfers			0
Magnet [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired			5,000
Other Acquisitions [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired			2,620
Healthcare
Finite-Lived Intangible Assets [Line Items]
Goodwill	1,426,498		1,426,498		1,418,334
Goodwill, Impairment Loss			0
Goodwill, Foreign Currency Translation Gain (Loss)			1,725
Goodwill, Acquired During Period			6,775
Goodwill, Purchase Accounting Adjustments			(336)
Goodwill, Transfers			0
Enterprise
Finite-Lived Intangible Assets [Line Items]
Goodwill	688,999		688,999		673,472
Goodwill, Impairment Loss			0
Goodwill, Foreign Currency Translation Gain (Loss)			3,536
Goodwill, Acquired During Period			0
Goodwill, Purchase Accounting Adjustments			0
Goodwill, Transfers			11,991
Automotive
Finite-Lived Intangible Assets [Line Items]
Goodwill	1,080,453		1,080,453		0
Goodwill, Impairment Loss			0
Goodwill, Foreign Currency Translation Gain (Loss)			0
Goodwill, Acquired During Period			0
Goodwill, Purchase Accounting Adjustments			0
Goodwill, Transfers			1,080,453
Imaging
Finite-Lived Intangible Assets [Line Items]
Goodwill	258,199		258,199		257,792
Goodwill, Impairment Loss			0
Goodwill, Foreign Currency Translation Gain (Loss)			407
Goodwill, Acquired During Period			0
Goodwill, Purchase Accounting Adjustments			0
Goodwill, Transfers			0
Other
Finite-Lived Intangible Assets [Line Items]
Goodwill	18,700		18,700		$ 0
Goodwill, Impairment Loss			137,907
Goodwill, Foreign Currency Translation Gain (Loss)			0
Goodwill, Acquired During Period			0
Goodwill, Purchase Accounting Adjustments			0
Goodwill, Transfers			156,607
Mobile And Consumer Segment [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill, Foreign Currency Translation Gain (Loss)			5,344
Subscriber Revenue Services [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill	17,800		17,800
Reporting Unit, Amount of Fair Value in Excess of Carrying Amount	94,300		94,300
Goodwill, Subsequent Recognition of Deferred Tax Asset			8,500
Goodwill, Impairment Loss			102,800
Other Mobile Businesses [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill	36,000		36,000
Reporting Unit, Amount of Fair Value in Excess of Carrying Amount	35,100		35,100
Goodwill, Impairment Loss			35,100
Dragon TV [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 12,000		$ 12,000

XML

Financial Instruments and Hedging Activities (Additional Information) (Detail) - Derivatives Not Designated as Hedges - USD ($) $ in Millions	6 Months Ended
	Mar. 31, 2018	Sep. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Derivative, Notional Amount	$ 78.0	$ 69.0
Maximum
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Term of foreign currency forward contracts	90 days

XML

Financial Instruments and Hedging Activities (Quantitative Summary of Fair Value of Derivative Instruments) (Detail) - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2018	Sep. 30, 2017
Derivatives, Fair Value [Line Items]
Document Period End Date	Mar. 31, 2018
Foreign currency forward contracts | Prepaid Expenses and Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	$ 325	$ 220
Foreign currency forward contracts | Accrued Expenses And Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value	$ 374	$ 373

XML

Financial Instruments and Hedging Activities (Summarized Activity of Derivative Instruments) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Document Period End Date			Mar. 31, 2018
Derivatives Not Designated as Hedges | Foreign currency forward contracts | Other expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income	$ (785)	$ 3,555	$ (1,182)	$ (8,060)

XML

Fair Value Measures (Assets and Liabilities Measured at Fair Value on Recurring Basis) (Detail) - USD ($)	6 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Sep. 30, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Document Period End Date	Mar. 31, 2018
Fair Value, Measurements, Recurring
Assets:
Money market funds	$ 342,877,000		$ 381,899,000
Bank Time Deposits, Fair Value Disclosure	97,421,000		85,570,000
Commercial Paper, Fair value	43,084,000		41,968,000
Corporate notes and bonds, Fair Value	79,116,000		74,067,000
Foreign Currency Contract, Asset, Fair Value Disclosure	325,000		220,000
Total assets at fair value	562,823,000		583,724,000
Foreign Currency Contracts, Liability, Fair Value Disclosure	(374,000)		(373,000)
Liabilities:
Contingent earn-out	(11,752,000)		(8,648,000)
Total liabilities at fair value	(12,126,000)		(9,021,000)
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1
Assets:
Money market funds	342,877,000		381,899,000
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	342,877,000		381,899,000
Foreign Currency Contracts, Liability, Fair Value Disclosure	0		0
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
Bank Time Deposits, Fair Value Disclosure	97,421,000		85,570,000
Commercial Paper, Fair value	43,084,000		41,968,000
Corporate notes and bonds, Fair Value	79,116,000		74,067,000
Foreign Currency Contract, Asset, Fair Value Disclosure	325,000		220,000
Total assets at fair value	219,946,000		201,825,000
Foreign Currency Contracts, Liability, Fair Value Disclosure	(374,000)		(373,000)
Liabilities:
Contingent earn-out	0		0
Total liabilities at fair value	(374,000)		(373,000)
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3
Assets:
Money market funds	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
Foreign Currency Contracts, Liability, Fair Value Disclosure	0		0
Liabilities:
Contingent earn-out	(11,752,000)		(8,648,000)
Total liabilities at fair value	(11,752,000)		(8,648,000)
Corporate Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Amortized Cost Basis	64,722,000		74,150,000
Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Amortized Cost Basis	$ 42,987,000		$ 41,805,000
Commercial paper, corporate notes and bonds [Member]
Liabilities:
Available for sale Securities, Weighted Average Maturity		8 months 20 days

XML

Fair Value Measures (Changes in Fair Value of Contingent Earn-Out Liabilities) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Document Period End Date			Mar. 31, 2018
Balance at beginning of period	$ 10,431	$ 8,961	$ 8,648	$ 8,240
Earn-out liabilities established at time of acquisition	0	1,600	500	3,253
Payments and foreign currency translation	(79)	(2,759)	(96)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements				4,257
Adjustments to fair value included in acquisition-related costs, net	1,400	(1,425)	2,700	(859)
Balance at end of period	11,752	$ 6,377	11,752	$ 6,377
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	$ 19,600		$ 19,600

XML

Fair Value Measures Fair Value Measures - Additional Debt Details (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Mar. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity securities, weighted average maturity	3 months 9 days
Held-to-maturity Securities, Fair Value	$ 80.4
Long-term Debt, Fair Value	2,930.9	$ 2,558.6
Debt Instrument, Face Amount	2,918.1	$ 2,587.0
Corporate Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity Securities	$ 80.2

XML

Accrued Expenses and Other Current Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Sep. 30, 2017
Payables and Accruals [Abstract]
Compensation	$ 119,683	$ 159,951
Cost of revenue related liabilities	26,036	20,124
Consulting and professional fees	24,741	12,649
Accrued interest payable	22,318	26,285
Facility-related liabilities	5,006	7,158
Sales and marketing incentives	4,508	3,655
Sales and other taxes payable	1,537	3,125
Other	10,851	12,954
Total	$ 214,680	$ 245,901

XML

Deferred Revenue (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Sep. 30, 2017
Total current deferred revenue	$ 413,126	$ 366,042
Total long-term deferred revenue	469,575	423,929
Deferred maintenance revenue
Total current deferred revenue	170,849	162,958
Total long-term deferred revenue	62,744	60,298
Unearned revenue
Total current deferred revenue	242,277	203,084
Total long-term deferred revenue	$ 406,831	$ 363,631

XML

Restructuring and Other Charges, net (Accrual Activity Relating to Restructuring and Other Charges) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Restructuring [Roll Forward]
Balance at September 30, 2017			$ 10,705
Restructuring charges	$ 5,134	$ 6,830	11,682	$ 12,378
Restructuring Reserve, Accrual Adjustment			(754)
Cash payments			(11,759)
Balance at March 31, 2018	9,874		9,874
Personnel
Restructuring [Roll Forward]
Balance at September 30, 2017			1,546
Restructuring charges	3,787		8,670
Restructuring Reserve, Accrual Adjustment			0
Cash payments			(8,862)
Balance at March 31, 2018	1,354		1,354
Facilities
Restructuring [Roll Forward]
Balance at September 30, 2017			9,159
Restructuring charges	1,347		3,012
Restructuring Reserve, Accrual Adjustment			(754)
Cash payments			(2,897)
Balance at March 31, 2018	$ 8,520		$ 8,520

XML

Restructuring and Other Charges, net (By Segment) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Restructuring Cost and Reserve [Line Items]
Document Period End Date			Mar. 31, 2018
Restructuring and other charges, net	$ 8,948	$ 19,911	$ 23,749	$ 26,614
Restructuring charges	5,134	6,830	11,682	12,378
Healthcare
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	788	1,170	3,326	3,431
Restructuring charges	788	1,170	3,326	3,431
Enterprise
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	272	645	2,894	1,676
Restructuring charges	272	645	2,894	1,676
Automotive
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	849	1,247	1,000	1,415
Restructuring charges	849	1,247	1,000	1,415
Imaging
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	67	261	1,299	973
Restructuring charges	67	261	1,299	973
Other
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	1,653	12,630	1,913	12,674
Restructuring charges	1,653	1,857	1,913	1,901
Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	5,319	3,958	13,317	6,445
Restructuring charges	1,505	1,650	1,250	2,982
Personnel
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	(4,575)			(8,224)
Restructuring charges	3,787		8,670
Personnel | Healthcare
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	(788)	(577)	(3,301)	(2,561)
Personnel | Enterprise
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	(265)	(388)	(527)	(812)
Personnel | Automotive
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	(849)	(1,247)	(1,000)	(1,415)
Personnel | Imaging
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	(83)	(225)	(1,306)	(586)
Personnel | Other
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	(1,095)	(1,806)	(1,344)	(1,850)
Personnel | Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	(707)	(332)	(1,192)	(1,000)
Facilities
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	(2,255)			(4,154)
Restructuring charges	1,347		3,012
Facilities | Healthcare
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	0	(593)	(25)	(870)
Facilities | Enterprise
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	(7)	(257)	(2,367)	(864)
Facilities | Automotive
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	0	0	0	0
Facilities | Imaging
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	(16)	(36)	(7)	(387)
Facilities | Other
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	(558)	(51)	(569)	(51)
Facilities | Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	(798)	(1,318)	(58)	(1,982)
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	3,814		12,067	14,236
Other Restructuring [Member] | Healthcare
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	0	0	0	0
Other Restructuring [Member] | Enterprise
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	0	0	0	0
Other Restructuring [Member] | Automotive
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] | Other
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	0	10,773	0	10,773
Other Restructuring [Member] | Corporate
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	3,814	2,308	12,067	3,463
Chief Executive Officer [Member] | Other Restructuring [Member] | Corporate
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	$ 2,300	$ 13,081	$ 4,600	$ 3,500

XML

Restructuring and Other Charges, net (Additional Information) (Detail) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018 USD ($)	Mar. 31, 2017 USD ($)	Mar. 31, 2018 USD ($)	Mar. 31, 2017 USD ($)	Sep. 30, 2017 USD ($)
Restructuring Cost and Reserve [Line Items]
Document Period End Date			Mar. 31, 2018
Restructuring Reserve	$ 9,874		$ 9,874		$ 10,705
Document Fiscal Year Focus			2018
Restructuring charges	5,134	$ 6,830	$ 11,682	$ 12,378
Number of personnel eliminated			400	220
Tangible Asset Impairment Charges				$ 10,800
Asset Impairment Charges	137,907	0	$ 137,907	0
Personnel
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	4,575			8,224
Restructuring Reserve	1,354		1,354		1,546
Restructuring charges	3,787		8,670
Facilities
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	2,255			4,154
Restructuring Reserve	8,520		8,520		$ 9,159
Restructuring charges	1,347		3,012
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	3,814		12,067	14,236
Malware Incident - Professional Service Charges [Member]
Restructuring Cost and Reserve [Line Items]
Asset Impairment Charges		10,800
Professional Fees	1,500		7,500
Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,505	1,650	1,250	2,982
Corporate | Personnel
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	707	332	1,192	1,000
Corporate | Facilities
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net	798	1,318	58	1,982
Corporate | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	3,814	2,308	12,067	3,463
Corporate | Chief Executive Officer [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs	$ 2,300	$ 13,081	$ 4,600	$ 3,500

XML

Debt and Credit Facilities (Borrowing Obligations) (Detail) - USD ($) $ in Thousands	1 Months Ended			6 Months Ended
	Nov. 30, 2017	Jan. 31, 2017	Dec. 31, 2015	Mar. 31, 2018	Sep. 30, 2017	Dec. 22, 2016	Jun. 21, 2016	Oct. 22, 2012	Aug. 14, 2012
Debt Instrument [Line Items]
Document Period End Date				Mar. 31, 2018
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				450,000
Long-term Debt, Maturities, Repayments of Principal in Year Four				0
Long-term Debt, Maturities, Repayments of Principal in Year Five				310,463
Long-term Debt, Maturities, Repayments of Principal in Rolling after Year Five				1,826,488
Total debt				2,311,484	$ 2,617,404
Less: current portion				0	376,121
Total long-term debt				2,311,484	2,241,283
Debt Issuance Costs, Noncurrent, Net				(1,008)	(1,174)
Long-term Debt, Gross				2,586,951
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net				(275,467)
5.625% Senior Notes due 2026 [Member]
Debt Instrument [Line Items]
Senior Notes, net of unamortized premium				494,607	494,298	$ 500,000
5.375% Senior Notes due August 15, 2020
Debt Instrument [Line Items]
Senior Notes, net of unamortized premium				448,868	448,630			$ 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				298,065	297,910		$ 300,000
Convertible Debentures One Percent Due Twenty Thirty Five [Member]
Debt Instrument [Line Items]
Senior Notes, net of unamortized premium				541,164	528,690
Convertible Debentures Two Point Seven Five Percent Due November One Twenty Thirty One [Member]
Debt Instrument [Line Items]
Convertible Debentures, net of unamortized discount				46,568	376,121
Repayments of Debt	$ 331,200
1.25% Convertible Debentures due 2025 [Member]
Debt Instrument [Line Items]
Convertible Debentures, net of unamortized discount				258,387	253,054
Convertible Debentures One Point Five Percent Due November One Twenty Thirty Five [Member] [Member]
Debt Instrument [Line Items]
Convertible Debentures, net of unamortized discount				224,833	$ 219,875
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				450,000
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				800,000
Total debt				1,240,532
Long-term Debt, Gross				1,250,000
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net				(9,468)
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				0
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				310,463
Long-term Debt, Maturities, Repayments of Principal in Rolling after Year Five				1,026,488
Total debt				1,070,952
Long-term Debt, Gross				1,336,951
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net				$ (265,999)

XML

Debt and Credit Facilities Borrowing Obligations Detail (Details) - USD ($) $ in Millions	Mar. 31, 2018	Sep. 30, 2017
Borrowing Obligations Detail [Abstract]
Long-term Debt, Fair Value	$ 2,558.6	$ 2,930.9
Debt Instrument, Face Amount	$ 2,587.0	$ 2,918.1

XML

Debt and Credit Facilities 5.375% Senior Notes due 2020 (Details) - USD ($) $ in Thousands	1 Months Ended	6 Months Ended
	Jan. 31, 2017	Mar. 31, 2018	Mar. 31, 2017	Sep. 30, 2017	Jan. 09, 2017	Oct. 22, 2012	Aug. 14, 2012
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 2,587,000		$ 2,918,100
Document Period End Date		Mar. 31, 2018
Loss on extinguishment of debt		$ 0	$ 18,565
5.375% Senior Notes due August 15, 2020
Debt Instrument [Line Items]
Debt Instrument, Face Amount					$ 450,000
Senior Notes, Noncurrent		$ 448,868		$ 448,630		$ 350,000	$ 700,000
Debt Instrument, Interest Rate, Stated Percentage		5.375%		5.375%			5.375%
Unamortized Debt Issuance Expense		$ 1,900		$ 7,300
Repayments of Debt	$ 600,000
Loss on extinguishment of debt	$ (18,600)

XML

Debt and Credit Facilities 6.0% Senior Notes due 2024 (Details) - USD ($) $ in Thousands	1 Months Ended	6 Months Ended
	Jun. 30, 2016	Mar. 31, 2018	Mar. 31, 2017	Sep. 30, 2017	Dec. 22, 2016	Jun. 21, 2016
Debt Instrument [Line Items]
Proceeds from Issuance of Long-term Debt		$ 0	$ 838,959
5.625% Senior Notes due 2026 [Member]
Debt Instrument [Line Items]
Senior Notes, Noncurrent		$ 494,607		$ 494,298	$ 500,000
Debt Instrument, Interest Rate, Stated Percentage		5.625%			5.625%
Unamortized Debt Issuance Expense		$ 5,400
6.0% Senior Notes due 2024 [Member]
Debt Instrument [Line Items]
Senior Notes, Noncurrent		$ 298,065		$ 297,910		$ 300,000
Debt Instrument, Interest Rate, Stated Percentage		6.00%		6.00%		6.00%
Proceeds from Issuance of Long-term Debt	$ 297,500
Unamortized Debt Issuance Expense		$ 1,900

XML

Debt and Credit Facilities 1.0% Convertible Debentures due 2035 (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended		3 Months Ended		6 Months Ended		12 Months Ended
	Nov. 30, 2017	Dec. 31, 2015	Mar. 31, 2017	Jun. 30, 2015	Mar. 31, 2018	Mar. 31, 2017	Sep. 30, 2017	Dec. 07, 2015	Jun. 01, 2015	Oct. 24, 2011
Debt Instrument [Line Items]
Debt Instrument, Face Amount					$ 2,587,000		$ 2,918,100
Proceeds from Issuance of Long-term Debt					0	$ 838,959
Debt Issuance Costs, Noncurrent, Net					1,008		$ 1,174
Loss on extinguishment of debt					$ 0	18,565
Convertible Debentures One Percent Due Twenty Thirty Five [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount								$ 676,500
Debt Instrument, Convertible, Carrying Amount of Equity Component								$ 181,100
Debt Instrument, Convertible, Conversion Price								$ 27.22
Debt Instrument, Interest Rate, Stated Percentage					1.00%		1.00%
Convertible Debt, Noncurrent								$ 495,400
Convertible Debentures Two Point Seven Five Percent Due November One Twenty Thirty One [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount					$ 46,600		$ 377,700			$ 690,000
Debt Instrument, Convertible, Carrying Amount of Equity Component										$ 156,400
Debt Instrument, Convertible, Conversion Price										$ 32.30
Repayments of Convertible Debt		$ 38,300	$ 38,300	$ 256,200		$ 17,800	$ 331,200
Debt Instrument, Interest Rate, Stated Percentage					2.75%		2.75%
Repayments of Debt	$ 331,200
Convertible Debt, Noncurrent										$ 533,600
Term Loan Facility Due August Seventh Twenty Ninteen [Member]
Debt Instrument [Line Items]
Repayments of Debt		472,500
Loss on extinguishment of debt		$ 4,900
Convertible Debentures One Point Five Percent Due November One Twenty Thirty Five [Member] [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount									$ 263,900
Debt Instrument, Convertible, Carrying Amount of Equity Component									$ 55,300
Debt Instrument, Convertible, Conversion Price									$ 23.26
Debt Instrument, Interest Rate, Stated Percentage					1.50%		1.50%
Convertible Debt, Noncurrent									$ 208,600

XML

Debt and Credit Facilities 2.75% Convertible Debentures due 2031 (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended		3 Months Ended		6 Months Ended		12 Months Ended
	Nov. 30, 2017	Dec. 31, 2015	Mar. 31, 2017	Jun. 30, 2015	Mar. 31, 2018	Mar. 31, 2017	Sep. 30, 2017	Oct. 24, 2011
Debt Instrument [Line Items]
Loss on extinguishment of debt					$ 0	$ 18,565
Debt Instrument, Face Amount					2,587,000		$ 2,918,100
Debt Issuance Costs, Noncurrent, Net					1,008		1,174
Convertible Debentures Two Point Seven Five Percent Due November One Twenty Thirty One [Member]
Debt Instrument [Line Items]
Repayments of Convertible Debt		$ 38,300	$ 38,300	$ 256,200		$ 17,800	331,200
Debt Instrument, Face Amount					46,600		377,700	$ 690,000
Repayments of Debt	$ 331,200
Debt Instrument, Convertible, Conversion Price								$ 32.30
Debt Instrument, Unamortized Discount					$ 0		$ 1,500
Convertible Debt, Noncurrent								$ 533,600
Debt Instrument, Convertible, Carrying Amount of Equity Component								$ 156,400
Debt Instrument, Interest Rate, Stated Percentage					2.75%		2.75%

XML

Debt and Credit Facilities 1.5% Convertible Debentures due 2035 (Details) - USD ($) $ / shares in Units, $ in Thousands	Mar. 31, 2018	Sep. 30, 2017	Jun. 01, 2015
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 2,587,000	$ 2,918,100
Debt Issuance Costs, Noncurrent, Net	$ 1,008	$ 1,174
Convertible Debentures One Point Five Percent Due November One Twenty Thirty Five [Member] [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount			$ 263,900
Debt Instrument, Interest Rate, Stated Percentage	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	$ 37,700
Convertible Debt, Noncurrent			208,600
Debt Instrument, Convertible, Carrying Amount of Equity Component			$ 55,300

XML

Debt and Credit Facilities Credit Facility (Details) - USD ($) $ in Thousands	1 Months Ended	6 Months Ended
	Dec. 31, 2015	Mar. 31, 2018	Mar. 31, 2017	Sep. 30, 2017	Apr. 15, 2016
Line of Credit Facility [Line Items]
Debt Issuance Costs, Noncurrent, Net		$ 1,008		$ 1,174
Loss on extinguishment of debt		0	$ (18,565)
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		238,400			$ 242,500
Letters of Credit Outstanding, Amount		$ 4,100
Term Loan Facility Due August Seventh Twenty Ninteen [Member]
Line of Credit Facility [Line Items]
Repayments of Debt	$ 472,500
Loss on extinguishment of debt	$ (4,900)

XML

Debt and Credit Facilities Applicable Borrowing Rates and Additional Detail (Details) - USD ($) $ in Millions	6 Months Ended
	Mar. 31, 2018	Sep. 30, 2017	Dec. 22, 2016	Jun. 21, 2016	Aug. 14, 2012
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Unamortized Discount	$ 0.0	$ 0.0
5.625% Senior Notes due 2026 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.625%		5.625%
Debt Instrument, Interest Rate, Effective Percentage	5.625%
nuan_DebtInstrumentMaturityYear	2026
Unamortized Debt Issuance Expense	$ 5.4
6.0% Senior Notes due 2024 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.00%	6.00%		6.00%
Debt Instrument, Interest Rate, Effective Percentage	6.00%	6.00%
nuan_DebtInstrumentMaturityYear	2024
Unamortized Debt Issuance Expense	$ 1.9
Debt Instrument, Unamortized Premium	$ 0.0	$ 0.0
5.375% Senior Notes due August 15, 2020
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.375%	5.375%			5.375%
Debt Instrument, Interest Rate, Effective Percentage	5.28%	5.28%
nuan_DebtInstrumentMaturityYear	2020
Unamortized Debt Issuance Expense	$ 1.9	$ 7.3
Debt Instrument, Unamortized Premium	$ (0.8)	$ (1.0)
Convertible Debentures Two Point Seven Five Percent Due November One Twenty Thirty One [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.75%	2.75%
Debt Instrument, Interest Rate, Effective Percentage	7.432%	7.43%
nuan_DebtInstrumentMaturityYear	2031
Unamortized Debt Issuance Expense	$ 0.0	$ 1.1
Debt Instrument, Unamortized Discount	$ 0.0	$ 1.5
Convertible Debentures One Point Five Percent Due November One Twenty Thirty Five [Member] [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	1.50%	1.50%
Debt Instrument, Interest Rate, Effective Percentage	5.394%	5.39%
nuan_DebtInstrumentMaturityYear	2035
Unamortized Debt Issuance Expense	$ 1.3	$ 1.9
Debt Instrument, Unamortized Discount	$ 37.7
Convertible Debentures One Percent Due Twenty Thirty Five [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	1.00%	1.00%
Debt Instrument, Interest Rate, Effective Percentage	5.622%	5.62%
nuan_DebtInstrumentMaturityYear	2035
Unamortized Debt Issuance Expense	$ 6.3	$ 8.2
Debt Instrument, Unamortized Discount	$ 129.1	$ 140.9
Convertible Debentures 1.25% Due 2025 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	1.25%
Debt Instrument, Interest Rate, Effective Percentage	5.578%
nuan_DebtInstrumentMaturityYear	2025
Unamortized Debt Issuance Expense	$ 4.0
Debt Instrument, Unamortized Discount	$ 87.6
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%

XML

Debt and Credit Facilities 5.625% Senior Notes due December 2026 (Details) - USD ($) $ in Thousands	1 Months Ended	6 Months Ended
	Dec. 31, 2016	Mar. 31, 2018	Sep. 30, 2017	Dec. 22, 2016
Debt Instrument [Line Items]
Document Period End Date		Mar. 31, 2018
5.625% Senior Notes due 2026 [Member]
Debt Instrument [Line Items]
Senior Notes, Noncurrent		$ 494,607	$ 494,298	$ 500,000
Debt Instrument, Interest Rate, Stated Percentage		5.625%		5.625%
Proceeds from Issuance of Senior Long-term Debt	$ 495,000
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%

XML

Debt and Credit Facilities 1.25% Convertible Debentures due 2025 (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions	1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended	59 Months Ended
	Dec. 31, 2015	Mar. 31, 2017	Jun. 30, 2015	Mar. 31, 2018	Mar. 31, 2017	Sep. 30, 2017	Mar. 31, 2018	Mar. 13, 2017	Oct. 24, 2011
Debt Instrument [Line Items]
Document Period End Date				Mar. 31, 2018
Debt Instrument, Face Amount				$ 2,587,000		$ 2,918,100	$ 2,587,000
Proceeds from Issuance of Long-term Debt				$ 0	$ 838,959
Stock Repurchased and Retired During Period, Shares				5.8	5.8		46.5
Stock Repurchased During Period, Value				$ 99,100	$ 99,100		$ 806,600
Convertible Debentures 1.25% Due 2025 [Member]
Debt Instrument [Line Items]
Convertible Debt, Noncurrent								$ 252,100
Debt Instrument, Face Amount								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
Convertible Debentures Two Point Seven Five Percent Due November One Twenty Thirty One [Member]
Debt Instrument [Line Items]
Convertible Debt, Noncurrent									$ 533,600
Debt Instrument, Face Amount				$ 46,600		377,700	$ 46,600		690,000
Repayments of Convertible Debt	$ 38,300	$ 38,300	$ 256,200		$ 17,800	$ 331,200
Debt Instrument, Convertible, Carrying Amount of Equity Component									$ 156,400
Debt Instrument, Convertible, Conversion Price									$ 32.30

XML

Stockholders' Equity Stockholders' Equity (Details) - USD ($) shares in Millions, $ in Millions	6 Months Ended		59 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Apr. 29, 2015	Apr. 29, 2013
Stockholders Equity Note [Line Items]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased, Value				$ 500.0	$ 500.0
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased	$ 193.4		$ 193.4
Stock Repurchased and Retired During Period, Shares	5.8	5.8	46.5
Stock Repurchased During Period, Value	$ 99.1	$ 99.1	$ 806.6
Other Acquisitions [Member]
Stockholders Equity Note [Line Items]
Payments to Acquire Businesses, Gross	$ 8.7	$ 34.4

XML

Net Income (Loss) Per Share (Additional Information) (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net loss	$ (164,053)	$ (33,808)	$ (110,825)	$ (57,736)
Weighted Average Number of Shares Outstanding, Basic	294,103	291,021	292,720	289,976
Dilutive Securities, Effect on Basic Earnings Per Share	0	0	0	0
Weighted Average Number of Shares Outstanding, Diluted	294,103	291,021	292,720	289,976
Earnings Per Share, Basic	$ (0.56)	$ (0.12)	$ (0.38)	$ (0.20)
Weighted Average Number of Shares, Contingently Issuable	2,836	4,334	2,387	3,478
Anti-dilutive common equivalent shares excluded from computation of diluted net income (loss) per share	2,679	3,875	4,178	5,126

XML

Stock-Based Compensation (Included in Consolidated Statements of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Document Period End Date			Mar. 31, 2018
Stock based compensation	$ 33,749	$ 40,348	$ 71,735	$ 79,478
Cost of professional services and hosting
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock based compensation	6,322	8,080	13,729	16,490
Cost of product and licensing
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock based compensation	112	102	378	194
Cost of maintenance and support
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock based compensation	885	1,010	2,089	1,987
Research and development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock based compensation	8,396	8,398	18,092	16,888
Sales and marketing
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock based compensation	8,366	11,018	19,042	22,987
General and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock based compensation	$ 9,668	$ 11,740	$ 18,405	$ 20,932

XML

Stock-Based Compensation (Summary of Activity Relating to Restricted Units) (Detail) - USD ($) $ / shares in Units, $ in Millions	6 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Sep. 30, 2017	Jun. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	21,948		23,807
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value	$ 0.0	$ 0.8
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term	2 years 7 months
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price	$ 16.41			$ 16.36
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value	$ 0.1
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	21,939		1,042,671
Restricted Units, Outstanding [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term	2 years 7 months	8 months
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value	$ 0.1			$ 1.0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 16.40		$ 15.39
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	1,859
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price	$ 3.41
Closing market value of common stock	15.75
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Purchase price for restricted units, vested	$ 0.001
Number of Shares Underlying Restricted Units — Contingent Awards
Restricted Units, Outstanding [Roll Forward]
Outstanding at September 30, 2017	5,043,931
Granted	1,784,982
Earned/released	(1,687,862)
Forfeited	(1,236,037)
Outstanding at March 31, 2018	3,905,014
Weighted average remaining recognition period of outstanding restricted units	1 year 1 month
Unrecognized stock-based compensation expense of outstanding restricted units	$ 48.3
Aggregate intrinsic value of outstanding restricted units(a)	$ 61.5
Number of Shares Underlying Restricted Units — Time-Based Awards
Restricted Units, Outstanding [Roll Forward]
Outstanding at September 30, 2017	6,477,164
Granted	6,005,863.00
Earned/released	(4,176,917.00)
Forfeited	(457,533.00)
Outstanding at March 31, 2018	7,848,577
Weighted average remaining recognition period of outstanding restricted units	1 year 9 months
Unrecognized stock-based compensation expense of outstanding restricted units	$ 86.0
Aggregate intrinsic value of outstanding restricted units(a)	$ 123.7

XML

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	6 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Document Period End Date	Mar. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value	$ 0.0	$ 0.8
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant-date fair value per share	$ 15.67	$ 16.05
Total intrinsic value of shares vested (in millions)	$ 94.0	$ 99.5

XML

Income Taxes Components of Income (Loss) Before Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Components of Income (Loss) before Income Taxes [Abstract]
Document Period End Date			Mar. 31, 2018
Domestic	$ (79,921)	$ (41,803)	$ (119,952)	$ (89,386)
Foreign	(81,588)	17,136	(66,850)	51,144
Loss before income taxes	$ (161,509)	$ (24,667)	$ (186,802)	$ (38,242)

XML

Income Taxes (Components of Benefit from Income Taxes) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Income Tax Disclosure [Abstract]
Gross Income Tax Benefit from New Tax Legislation			$ 87,000
Current Income Tax Expense (Benefit)			10,000
Domestic	$ 5,197	$ 4,822	(75,669)	$ 8,981
Foreign	(2,653)	4,319	(308)	10,513
Provision (benefit) for income taxes	$ 2,544	$ 9,141	$ (75,977)	$ 19,494
Effective tax rate	(1.60%)	(37.10%)	40.70%	(51.00%)
One-Time Repatriation Tax			$ 2,000
Current Foreign Tax Expense (Benefit)	$ 12,000

XML

Income Taxes (Additional Information) (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Mar. 31, 2018	Mar. 31, 2018
Business Acquisition [Line Items]
Current Foreign Tax Expense (Benefit)	$ (12.0)
Current Income Tax Expense (Benefit)		$ 10.0
Subscriber Revenue Services [Member]
Business Acquisition [Line Items]
Goodwill, Subsequent Recognition of Deferred Tax Asset		$ 8.5

XML

Commitments and Contingencies (Details)	6 Months Ended
	Mar. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Indemnification term for former officers and directors	6 years

XML

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		6 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Segment Reporting Information [Line Items]
Segment Revenues	$ 518,314	$ 511,097	$ 1,027,139	$ 1,007,115
Revenues	514,224	499,573	1,015,869	987,231
Segment profit	160,288	184,007	317,707	345,621
Corporate expenses and other, net	(65,093)	(30,186)	(109,757)	(61,148)
Acquisition-related revenues	(4,090)	(11,524)	(11,270)	(19,884)
Stock-based compensation	(33,749)	(40,348)	(71,735)	(79,478)
Amortization of intangible assets	(37,450)	(45,130)	(75,870)	(88,531)
Acquisition-related costs, net	(2,360)	(5,379)	(7,921)	(14,405)
Restructuring and other charges, net	(8,948)	(19,911)	(23,749)	(26,614)
Goodwill, Impairment Loss	137,907	0	137,907	0
Other expenses, net	(32,200)	(56,196)	(66,300)	(93,803)
Loss before income taxes	(161,509)	(24,667)	(186,802)	(38,242)
Healthcare
Segment Reporting Information [Line Items]
Segment Revenues	261,239	238,466	506,775	477,673
Segment profit	87,350	83,328	164,769	161,896
Restructuring and other charges, net	(788)	(1,170)	(3,326)	(3,431)
Goodwill, Impairment Loss			0
Enterprise
Segment Reporting Information [Line Items]
Segment Revenues	112,668	122,126	233,266	237,504
Segment profit	25,722	40,349	63,451	70,267
Restructuring and other charges, net	(272)	(645)	(2,894)	(1,676)
Goodwill, Impairment Loss			0
Automotive
Segment Reporting Information [Line Items]
Segment Revenues	68,950	61,725	130,448	120,600
Segment profit	28,875	29,312	52,082	56,942
Restructuring and other charges, net	(849)	(1,247)	(1,000)	(1,415)
Goodwill, Impairment Loss			0
Imaging
Segment Reporting Information [Line Items]
Segment Revenues	48,933	53,048	104,563	105,137
Segment profit	12,257	18,470	27,900	36,086
Goodwill, Impairment Loss			0
Other
Segment Reporting Information [Line Items]
Segment Revenues	26,524	35,732	52,087	66,201
Segment profit	6,084	12,548	9,505	20,430
Restructuring and other charges, net	(1,653)	(12,630)	(1,913)	(12,674)
Goodwill, Impairment Loss			137,907
Less: acquisition-related revenues adjustments
Segment Reporting Information [Line Items]
Revenues	$ 4,090	$ 11,524	$ 11,270	$ 19,884

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Segment and Geographic Information and Significant Customers (Classification of Revenue by Major Geographic Areas) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Document Period End Date			Mar. 31, 2018
Segment Revenues	$ 518,314	$ 511,097	$ 1,027,139	$ 1,007,115
Total revenues	514,224	499,573	1,015,869	987,231
UNITED STATES
Revenues from External Customers and Long-Lived Assets [Line Items]
Segment Revenues	367,613	352,937	731,899	702,107
International [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Segment Revenues	$ 146,611	$ 146,636	$ 283,970	$ 285,124

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Supplemental Cash Flow Supplemental Cash Flow (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Supplemental Cash Flow Elements [Abstract]
Interest Paid	$ 21,427	$ 34,814	$ 48,708	$ 45,883
Income Taxes Paid	$ 4,233	$ 4,432	$ 8,833	$ 8,636

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Related Party Transaction (Details) - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2018	Sep. 30, 2017
Related Party Transaction [Line Items]
Document Period End Date	Mar. 31, 2018
Contingent And Deferred Acquisition Payments	$ 20,926	$ 28,860
Magnet [Member]
Related Party Transaction [Line Items]
Payments to Acquire Other Productive Assets	5,000
Technology Services Costs	2,000
Contingent And Deferred Acquisition Payments	1,500
Cash Distribution [Member] | Magnet [Member]
Related Party Transaction [Line Items]
Payments to Acquire Other Productive Assets	3,500
Liability [Member] | Magnet [Member]
Related Party Transaction [Line Items]
Payments to Acquire Other Productive Assets	$ 1,500