Synaptics (SYNA) 10-Q 3 May 17 2017 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Mar. 25, 2017	Apr. 26, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 25, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3
Trading Symbol	SYNA
Entity Registrant Name	SYNAPTICS INCORPORATED
Entity Central Index Key	817,720
Current Fiscal Year End Date	--06-24
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		34,304,923

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Mar. 31, 2017	Jun. 30, 2016
Current Assets:
Cash and cash equivalents	$ 329.1	$ 352.2
Accounts receivable, net of allowances of $4.0 and $3.7 at March 31, 2017 and June 30, 2016, respectively	246.6	252.6
Inventories	157	146.4
Prepaid expenses and other current assets	61.7	28.9
Total current assets	794.4	780.1
Property and equipment at cost, net of accumulated depreciation of $103.7 and $87.3 at March 31, 2017 and June 30, 2016, respectively	113.2	112.7
Goodwill	206.8	206.8
Acquired intangibles, net	115.1	160.3
Non-current other assets	39.2	40.3
Total assets	1,268.7	1,300.2
Current Liabilities:
Accounts payable	172.5	172.8
Accrued compensation	29.1	39.9
Income taxes payable	14.7	11.5
Acquisition-related liabilities	14.5	25.5
Other accrued liabilities	102.7	82.3
Current portion of long-term debt	15	18.8
Total current liabilities	348.5	350.8
Long-term debt, net of issuance costs	206.2	216.7
Acquisition-related liabilities		6.2
Deferred tax liabilities	0.9	9
Other long-term liabilities	14	12.5
Total liabilities	569.6	595.2
Stockholders' Equity:
Common stock: $0.001 par value; 120,000,000 shares authorized, 60,245,389 and 59,532,148 shares issued, and 34,303,913 and 35,212,141 shares outstanding, at March 31, 2017 and June 30, 2016, respectively	0.1	0.1
Additional paid-in capital	981.5	928.6
Treasury stock: 25,941,476 and 24,320,007 common treasury shares at March 31, 2017 and June 30, 2016, respectively, at cost	(980.3)	(892.3)
Accumulated other comprehensive income	1.5	3.3
Retained earnings	696.3	665.3
Total stockholders' equity	699.1	705
Liabilities and stockholders' equity	$ 1,268.7	$ 1,300.2

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Parenthetical) (Unaudited) - USD ($) $ in Millions	Mar. 31, 2017	Jun. 30, 2016
Statement Of Financial Position [Abstract]
Allowance for doubtful accounts receivable	$ 4	$ 3.7
Property and equipment, accumulated depreciation	$ 103.7	$ 87.3
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	120,000,000	120,000,000
Common stock, shares issued	60,245,389	59,532,148
Common stock, shares outstanding	34,303,913	35,212,141
Common treasury shares	25,941,476	24,320,007

Condensed Consolidated Statemen

Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Income Statement [Abstract]
Net revenue	$ 444.2	$ 402.5	$ 1,291.7	$ 1,343
Cost of revenue	309.5	258.1	894.9	869.6
Gross margin	134.7	144.4	396.8	473.4
Operating expenses:
Research and development	71.6	73.9	218.5	233
Selling, general, and administrative	38.1	43.6	105	124.8
Acquired intangibles amortization	2.4	4.7	9.3	14
Change in contingent consideration		1.1		(0.5)
Restructuring costs	0.3		7.3	1.9
Litigation settlement charge	10		10
Total operating expenses	122.4	123.3	350.1	373.2
Operating income	12.3	21.1	46.7	100.2
Interest and other income/(expense), net	(1.5)	0.8	(1.8)	(0.8)
Income before provision for income taxes	10.8	21.9	44.9	99.4
Provision for income taxes	6.3	1.4	13.9	20.1
Net income	$ 4.5	$ 20.5	$ 31	$ 79.3
Net income per share:
Basic	$ 0.13	$ 0.56	$ 0.89	$ 2.16
Diluted	$ 0.13	$ 0.54	$ 0.87	$ 2.09
Shares used in computing net income per share:
Basic	34.8	36.8	34.9	36.7
Diluted	35.4	37.9	35.7	38

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 4.5	$ 20.5	$ 31	$ 79.3
Other comprehensive loss:
Change in unrealized net loss on investments		(0.1)	(1.5)	(1.1)
Reclassification from accumulated other comprehensive income to interest income for accretion of non-current investments		(0.5)	(0.3)	(1.4)
Net current period-other comprehensive loss		(0.6)	(1.8)	(2.5)
Comprehensive income	$ 4.5	$ 19.9	$ 29.2	$ 76.8

Condensed Consolidated Stateme6

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities
Net income	$ 31	$ 79.3
Adjustments to reconcile net income to net cash provided by operating activities:
Share-based compensation costs	46.3	40.9
Depreciation and amortization	25	23.4
Acquired intangibles amortization	45.2	55.6
Accretion and remeasurement of contingent consideration liability		(0.5)
Deferred taxes	(11.7)	(14.1)
Impairment of property and equipment		2.4
Non-cash interest	(0.3)	(1.4)
Amortization of debt issuance costs	0.8	0.7
Impairment recovery on investments	(1.9)
Foreign currency remeasurement loss		4.1
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable, net	6	4.6
Inventories	(10.6)	7.5
Prepaid expenses and other current assets	(25.6)	1.1
Other assets	4.9	3.8
Accounts payable	1.6	(34.3)
Accrued compensation	(10.6)	(0.7)
Acquisition-related liabilities	(16.8)	(18.2)
Income taxes payable	(0.2)	(17.9)
Other accrued liabilities	21.4	7.1
Net cash provided by operating activities	104.5	143.4
Cash flows from investing activities
Proceeds from sales of investments	7.5	0.6
Purchase of intangible assets		(4.6)
Purchases of property and equipment	(26.1)	(19.7)
Investment in direct financing lease	(15.8)
Net cash used in investing activities	(34.4)	(23.7)
Cash flows from financing activities
Payment of debt	(15)	(7.6)
Purchases of treasury stock	(88)	(125)
Proceeds from issuance of shares	14.7	22.5
Payment of debt issuance costs		(0.3)
Excess tax benefit from share-based compensation	1.6	6.1
Payroll taxes for deferred stock and market stock units	(5.5)	(13.5)
Net cash used in financing activities	(92.2)	(117.8)
Effect of exchange rate changes on cash and cash equivalents	(1)	4.3
Net increase/(decrease) in cash and cash equivalents	(23.1)	6.2
Cash and cash equivalents at beginning of period	352.2	399.9
Cash and cash equivalents at end of period	329.1	406.1
Supplemental disclosures of cash flow information
Cash paid for taxes	21.5	45.7
Cash refund on taxes	10	10.8
Non-cash investing and financing activities:
Property and equipment received but unpaid	$ 2.5	$ 4.8

Basis of Presentation

Basis of Presentation	9 Months Ended
	Mar. 31, 2017
Accounting Policies [Abstract]
Basis of Presentation	1. Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission, or the SEC, and U.S. generally accepted accounting principles, or U.S. GAAP. Certain information or footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to SEC rules and regulations. In our opinion, the financial statements include all adjustments, which are of a normal and recurring nature and necessary for the fair presentation of the results of the interim periods presented. The results of operations for the interim periods are not necessarily indicative of the operating results for the full fiscal year or any future period. These financial statements should be read in conjunction with the audited consolidated financial statements and related notes included in our Annual Report on Form 10-K for the fiscal year ended June 25, 2016. The consolidated financial statements include our financial statements and those of our wholly owned subsidiaries. All significant intercompany balances and transactions have been eliminated upon consolidation. Our fiscal year is the 52- or 53-week period ending on the last Saturday in June. Our fiscal 2017 and 2016 years are 52-week periods ending on June 24, 2017 and June 25, 2016, respectively. The fiscal periods presented in this report were 13-week periods and 39-week periods for the three and nine months ended March 25, 2017 and March 26, 2016, respectively. For simplicity, the accompanying condensed consolidated financial statements have been shown as ending on calendar quarter end dates as of and for all periods presented, unless otherwise indicated. Use of Estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenue, expenses, and related disclosure of contingent assets and liabilities. On an ongoing basis, we evaluate our estimates, including those related to revenue recognition, allowance for doubtful accounts, cost of revenue, inventories, loss on purchase commitments, product warranty, accrued liabilities, share-based compensation costs, provision for income taxes, deferred income tax asset valuation allowances, uncertain tax positions, goodwill, intangible assets, investments, contingent consideration liability and loss contingencies. We base our estimates on historical experience, applicable laws and regulations, and various other assumptions that we believe to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions. Foreign Currency Transactions and Foreign Exchange Contracts The U.S. dollar is our functional and reporting currency. We remeasure our monetary assets and liabilities not denominated in the functional currency into U.S. dollar equivalents at the rate of exchange in effect on the balance sheet date. We measure and record non-monetary balance sheet accounts at the historical rate in effect at the date of transaction. We remeasure foreign currency expenses at the weighted average exchange rate in the month that the transaction occurred. Our foreign currency transactions and remeasurement gains and losses are included in selling, general, and administrative expenses in the condensed consolidated statements of income, and resulted in net losses of $0.4 million in the three and nine months ended March 31, 2017, and net losses of $3.3 million and $5.1 million in the three and nine months ended March 31, 2016, respectively. We enter into foreign currency contracts to manage exposure related to certain foreign currency obligations. The foreign currency contracts are not designated as hedging instruments and, accordingly, are not subject to hedge accounting. In fiscal year 2015, we entered into foreign currency forward contracts to purchase Japanese yen, using U.S. dollars. As of March 31, 2017, we had no outstanding foreign currency forward contracts. In the nine months ended March 31, 2017, and 2016 we recognized net gains of zero and $4.8 million, respectively, on the foreign currency forward contracts, which are recorded in selling, general, and administrative expenses in the condensed consolidated statements of income. Recently Issued Accounting Pronouncements Not Yet Effective In October 2016, the Financial Accounting Standards Board, or FASB, , or ASU, In August 2016, the FASB issued an ASU on Statement of Cash Flows-Classification of Certain Cash Receipts and Cash Payments. This ASU will be effective for us beginning in the first quarter of fiscal 2019 on a retrospective basis, and early adoption is permitted. We are evaluating the impact of this ASU on our condensed consolidated statements of cash flows. In May 2014, the FASB issued an ASU on Revenue from Contracts with Customers. The ASU will supersede most of the existing revenue recognition guidance in U.S. GAAP when the new standard becomes effective, and requires entities to recognize revenue when they transfer promised goods or services to customers in an amount that reflects the consideration which the entity expects to be entitled to in exchange for those goods or services. The ASU is effective for us in our fiscal year 2019, with early adoption permitted in the first quarter of fiscal 2018. We are currently in the process of evaluating the impact of the adoption of this ASU on our condensed consolidated financial statements and considering additional disclosure requirements. The new standard permits the use of either the retrospective or cumulative effect transition method. We have not yet selected a transition method or determined the effect of the standard on our ongoing financial reporting. In March 2016, the FASB issued an ASU for Compensation-Stock Compensation. This update simplifies several aspects of the accounting for employee share-based payment transactions including the accounting for income taxes, forfeitures, and statutory tax withholding requirements, as well as classification in the statement of cash flows. The ASU will be effective for us beginning in the first quarter of fiscal 2018, with early adoption permitted. While we continue to evaluate the effects of adoption of this ASU on our condensed consolidated In February 2016, the FASB issued an ASU on Leases. This update requires organizations that lease assets with lease terms of more than 12 months to recognize assets and liabilities for the rights and obligations created by those leases on their balance sheets. It also requires new qualitative and quantitative disclosures to help investors and other financial statement users better understand the amount, timing, and uncertainty of cash flows arising from leases. The new standard will be effective for us beginning in the first quarter of our fiscal year 2020, with early adoption permitted. We are evaluating the effects of adoption of this ASU on our condensed consolidated In January 2016, the FASB issued an ASU on Recognition and Measurement of Financial Assets and Financial Liabilities, which provides guidance for the recognition, measurement, presentation, and disclosure of financial assets and liabilities. This ASU will be effective for us beginning in our first quarter of fiscal 2019, with early adoption permitted. We are evaluating the effects of the adoption of this ASU on our condensed consolidated In July 2015, the FASB issued an ASU that requires an entity to measure inventory at the lower of cost and net realizable value when the first-in, first-out, or average cost method is used. Net realizable value is the estimated selling price in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. The ASU will become effective for us in our first quarter of fiscal 2018, with early adoption permitted. We are evaluating the effects of the adoption of this ASU on our condensed consolidated

Revenue Recognition

Revenue Recognition	9 Months Ended
	Mar. 31, 2017
Revenue Recognition [Abstract]
Revenue Recognition	2. Revenue Recognition We recognize revenue from product sales when there is persuasive evidence that an arrangement exists, delivery has occurred and title has transferred, the price is fixed or determinable, and collection is reasonably assured. We accrue for estimated sales returns, incentives, and other allowances at the time we recognize revenue. Our products contain embedded firmware and software, which together with, or consisting of, our ASIC chip, deliver the essential functionality of our products and, as such, software revenue recognition guidance is not applicable. Our sales to distributors are made under agreements that generally do not provide for price adjustments after purchase and revenue recognition and provide for only limited return rights under product warranty. Revenue on these sales is recognized in the same manner as sales to our non-distributor customers. When sales rebates and price allowances are applicable they are estimated, and recorded in the period the related revenue is recognized.

Net Income Per Share

Net Income Per Share	9 Months Ended
	Mar. 31, 2017
Earnings Per Share [Abstract]
Net Income Per Share	3. Net Income Per Share The computation of basic and diluted net income per share was as follows (in millions, except per share data): Three Months Ended Nine Months Ended March 31, March 31, 2017 2016 2017 2016 Numerator: Net income $ 4.5 $ 20.5 $ 31.0 $ 79.3 Denominator: Shares, basic 34.8 36.8 34.9 36.7 Effect of dilutive share-based awards 0.6 1.1 0.8 1.3 Shares, diluted 35.4 37.9 35.7 38.0 Net income per share: Basic $ 0.13 $ 0.56 $ 0.89 $ 2.16 Diluted $ 0.13 $ 0.54 $ 0.87 $ 2.09 Our basic net income per share amounts for each period presented have been computed using the weighted average number of shares of common stock outstanding over the period measured. Our diluted net income per share amounts for each period presented include the weighted average effect of potentially dilutive shares. We use the “treasury stock” method to determine the dilutive effect of our stock options, deferred stock units, or DSUs, and market stock units, or MSUs. Dilutive net income per share amounts do not include the potential weighted average effect of 2,380,552 and 756,328 shares of common stock related to certain share-based awards that were outstanding during the three months ended March 31, 2017 and 2016, respectively, and 1,739,783 and 894,251 shares of common stock related to certain share-based awards that were outstanding during the nine months ended March 31, 2017 and 2016, respectively. These share-based awards were not included in the computation of diluted net income per share because their effect would have been antidilutive.

Fair Value

Fair Value	9 Months Ended
	Mar. 31, 2017
Fair Value Disclosures [Abstract]
Fair Value	4. Fair Value Financial assets measured at fair value on a recurring basis by level within the fair value hierarchy, consisted of the following (in millions): March 31, June 30, 2017 2016 Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 Assets: Money market funds $ 311.0 $ - $ - $ 319.1 $ - $ - Auction rate securities - - 1.5 - - 8.6 Total available-for-sale securities $ 311.0 $ - $ 1.5 $ 319.1 $ - $ 8.6 In our condensed consolidated balance sheets, as of March 31, 2017 and June 30, 2016, money market balances were included in cash and cash equivalents, and auction rate securities, or ARS investments, were included in non-current other assets. The changes in fair value of our Level 3 financial assets as of March 31, 2017 were as follows: Balance as of June 30, 2016 $ 8.6 Net unrealized loss (1.5 ) Impairment recovery on redeemed investments 1.9 Redemptions (7.5 ) Balance as of March 31, 2017 $ 1.5 There were no transfers in or out of our Level 1, 2, or 3 assets during the three and nine months ended March 31, 2017 and 2016. The fair values of our accounts receivable and accounts payable approximate their carrying values because of the short-term nature of those instruments. Intangible assets, property and equipment, and goodwill are measured at fair value on a non-recurring basis if impairment is indicated. The interest rate on our bank debt is variable, which is subject to change from time to time to reflect a market interest rate; accordingly, the carrying value of our bank debt approximates fair value.

Auction Rate Securities

Auction Rate Securities	9 Months Ended
	Mar. 31, 2017
Text Block [Abstract]
Auction Rate Securities	5. Auction Rate Securities We have accounted for our ARS investments as non-current as we are not able to reasonably determine when the ARS markets will recover or be restructured. In the event we need to access these funds, we will not be able to do so without a loss of principal, unless redeemed by the issuers or a future auction on these investments is successful. Our failed ARS investments were compared to other observable market data or securities with similar characteristics. Our estimate of the fair value of our ARS investments could fluctuate from period to period depending on future market conditions. We have ARS investments with a fair value of $1.5 million with no maturity date and which are below investment grade. The ARS investments we held as of March 31, 2017, including the original cost basis, other-than-temporary impairment included in retained earnings, new cost basis, unrealized gain, and fair value, consisted of the following (in millions): Original Cost Basis Other-than- temporary Impairment in Retained Earnings New Cost Basis Unrealized Gain Fair Value Preferred stock $ 5.0 $ (5.0 ) $ - $ 1.5 $ 1.5 The ARS investments we held as of June 30, 2016, including the original cost basis, other-than-temporary impairment included in retained earnings, new cost basis, unrealized gain, and fair value, consisted of the following (in millions): Original Cost Basis Other-than- temporary Impairment in Retained Earnings New Cost Basis Unrealized Gain Fair Value Credit linked notes $ 7.5 $ (2.2 ) (1) $ 5.3 $ 1.8 $ 7.1 Preferred stock 5.0 (5.0 ) - 1.5 1.5 Total ARS $ 12.5 $ (7.2 ) $ 5.3 $ 3.3 $ 8.6 (1) Other-than-temporary impairment in retained earnings is partially offset by cumulative accretion of $4.4 million on non-current investments. Accretion is reclassified from accumulated other comprehensive income and recorded in the condensed consolidated statements of income as non-cash interest income.

Inventories

Inventories	9 Months Ended
	Mar. 31, 2017
Inventory Disclosure [Abstract]
Inventories	6. Inventories Inventories are stated at the lower of cost (first-in, first-out method) or market and consisted of the following (in millions): March 31, June 30, 2017 2016 Raw materials $ 95.0 $ 59.2 Finished goods 62.0 87.2 $ 157.0 $ 146.4 We record a write-down, if necessary, to reduce the carrying value of inventory to its net realizable value. The effect of these write-downs is to establish a new cost basis in the related inventory, which we do not subsequently write up. We also record a liability and charge to cost of revenue for estimated losses on inventory we are obligated to purchase from our contract manufacturers when such losses become probable from customer delays, order cancellations, or other factors.

Acquired Intangibles

Acquired Intangibles	9 Months Ended
	Mar. 31, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Acquired Intangibles	7. Acquired Intangibles The following table summarizes the life, the gross carrying value and the related accumulated amortization of our acquired intangible assets as of March 31, 2017 and June 30, 2016 (in millions): Weighted Average Life in Years March 31, 2017 June 30, 2016 Display driver technology 5.3 $ 164.0 $ 164.0 Fingerprint authentication technology 4.3 63.5 75.6 Customer relationships 2.8 48.4 48.4 Licensed technology and other 5.0 1.3 1.3 Patents 7.7 4.7 4.8 Supplier arrangement - 22.0 Acquired intangibles, gross 4.5 281.9 316.1 Accumulated amortization (166.8 ) (155.8 ) Acquired intangibles, net $ 115.1 $ 160.3 The total amortization expense for the acquired intangible assets was $14.0 million and $17.7 million for the three months ended March 31, 2017 and 2016, respectively, and $45.2 million and $55.6 million for the nine months ended March 31, 2017 and 2016, respectively. Amortization expense was included in our condensed consolidated statements of income in cost of revenue and acquired intangibles amortization. The following table presents expected annual fiscal year aggregate amortization expense as of March 31, 2017 (in millions): Remainder of 2017 $ 14.1 2018 48.6 2019 34.2 2020 10.6 2021 3.5 2022 3.5 Thereafter 0.6 Future amortization $ 115.1

Other Accrued Liabilities

Other Accrued Liabilities	9 Months Ended
	Mar. 31, 2017
Payables And Accruals [Abstract]
Other Accrued Liabilities	8. Other Accrued Liabilities Other accrued liabilities consisted of the following (in millions): March 31, June 30, 2017 2016 Customer obligations $ 35.3 $ 34.8 Inventory obligations 33.0 24.0 Warranty 3.7 3.5 Other 30.7 20.0 $ 102.7 $ 82.3

Indemnifications, Contingencies

Indemnifications, Contingencies and Legal Proceedings	9 Months Ended
	Mar. 31, 2017
Commitments And Contingencies Disclosure [Abstract]
Indemnifications, Contingencies and Legal Proceedings	9. Indemnifications, Contingencies and Legal Proceedings Indemnifications In connection with certain agreements, we are obligated to indemnify the counterparty against third party claims alleging infringement of certain intellectual property rights by us. We have also entered into indemnification agreements with our officers and directors. Maximum potential future payments cannot be estimated because these agreements do not have a maximum stated liability. However, historical costs related to these indemnification provisions have not been significant. We have not recorded any liability in our condensed consolidated financial statements for such indemnification obligations. Contingencies We have in the past and may in the future receive notices from third parties that claim our products infringe their intellectual property rights. We cannot be certain that our technologies and products do not and will not infringe issued patents or other proprietary rights of third parties. Any infringement claims, with or without merit, could result in significant litigation costs and diversion of management and financial resources, including the payment of damages, which could have a material adverse effect on our business, financial condition, and results of operations. Legal Proceedings In October 2015, Amkor Technology, or Amkor, filed a complaint against us alleging infringement of intellectual property rights and various other claims. In November 2015, we filed an indemnification claim against the former stockholders and option holders of Validity Sensors, Inc., or Validity, to secure our rights under the Agreement and Plan of Reorganization between us and Validity. Pursuant to the Agreement, we believe that we can offset costs, damages and settlements against the contingent consideration earnout balance for certain of the claims brought by Amkor. Accordingly, we have withheld and reserved the remaining contingent consideration earnout balance of $8.7 million and have classified the reserve balance as a current acquisition-related liability in our condensed consolidated balance sheet. In April 2017, we agreed to settle this case with Amkor on undisclosed terms that include each party licensing and assigning certain intellectual property rights, and cash payments. Settlement costs incurred in connection with this litigation have been recorded in our condensed consolidated financial statements for the three and nine month periods ended March 31, 2017. In September 2015, IIX Inc., or IIX, filed a complaint against us demanding payment of certain fees and costs plus interest allegedly due to IIX under a memorandum of understanding, or MOU, entered into between IIX and Renesas SP Drivers, Inc., or RSP, as well as litigation costs. In September 2015, we tendered a claim for indemnification from Renesas Electronics Corporation, or Renesas, on the basis that the IIX claim arises from a breach of Renesas’ obligations under the Stock Purchase Agreement that we executed with Renesas, among others, in June 2014. Accordingly, we have retained ¥648 million (approximately $5.8 million) of the Indemnification Holdback liability (see definition included under Contractual Obligations and Commercial Commitments in Management’s Discussion and Analysis contained elsewhere in this Report) and have classified the reserve balance as a current acquisition-related liability, as final settlement of the IIX complaint is expected to occur within the next twelve months.

Debt

Debt	9 Months Ended
	Mar. 31, 2017
Debt Disclosure [Abstract]
Debt	10. Debt On September 30, 2014, we entered into the Credit Agreement, with the lenders that are party thereto, or the Lenders, and Wells Fargo, as Administrative Agent for the Lenders. On October 20, 2015, we entered into a Commitment Increase Agreement and First Amendment to Credit Agreement, or the First Amendment, with the Administrative Agent and each of the lenders party thereto, which amends the Credit Agreement, among us, the Lenders and the Administrative Agent. On April 6, 2017, we entered into a Commitment Increase Agreement and Second Amendment, or the Incremental Amendment, to our existing Credit Agreement. Pursuant to the First Amendment, we exercised our right under the Credit Agreement to request a $100 million increase to the aggregate revolving credit commitment thereunder, for total aggregate revolving credit commitments of $250 million, and the Lenders under the Credit Agreement agreed to provide such increased revolving credit commitments pursuant to the terms of the First Amendment. Pursuant to the Incremental Amendment, we increased the maximum permitted principal amount of incremental loan commitments to $200 million, and utilized such increased amount to obtain additional revolving commitments under the Credit Agreement from each of the existing lenders in the aggregate principal amount of $200 million, such that after giving effect to the Incremental Amendment, the aggregate amount of the revolving commitments under the Credit Agreement became $450 million. As of March 31, 2017, the outstanding balance of debt under the Credit Agreement and related amendments was $223.8 million. The Credit Agreement provides for, among other things, (i) a revolving credit facility of up to $150 million, subsequently amended and increased to $450 million, which includes a $20 million sublimit for letters of credit and a $20 million sublimit for swingline loans, and (ii) a term loan facility in an amount of $150 million. At the initial closing under the Credit Agreement, we borrowed $150 million under the term loan facility and $100 million under the revolving credit facility to finance a portion of the RSP acquisition purchase price. Debt issuance costs were approximately $5.0 million, which are being amortized over 60 months. Our obligations under the Credit Agreement are guaranteed by the material domestic subsidiaries of our company, subject to certain exceptions (such material subsidiaries, together with our company, collectively, the Credit Parties). The obligations of the Credit Parties under the Credit Agreement and the other loan documents delivered in connection therewith are secured by a first priority security interest in substantially all of the existing and future personal property of the Credit Parties, including, without limitation, 65% of the voting capital stock of certain of the Credit Parties’ direct foreign subsidiaries, subject to certain exceptions. The revolving credit facility and term loans under the Credit Agreement bear interest at our election of a Base Rate plus an applicable margin or LIBOR plus an applicable margin. Swingline loans bear interest at a Base Rate plus an applicable margin. The Base Rate is the greater of the Prime Rate, the Federal Funds Rate plus 50 basis points, or LIBOR plus 100 basis points. The applicable margin is based on a sliding scale which ranges from zero to 100 basis points for Base Rate loans and 100 basis points to 200 basis points for LIBOR loans. During the three months ended March 31, 2017, the interest rates on our borrowings ranged from approximately 1.85% to 2.86%. The term loan facility requires repayment over five years with nineteen quarterly principal payments, which began in the three months ended March 31, 2015. Each of the first four quarterly principal payments were $1.9 million, each of the following quarterly principal payments are $3.8 million, and the final principal payment of $90.0 million will be due on September 30, 2019. The revolving credit facility requires payment in full on September 30, 2019. We are also required to pay a commitment fee for any unused portion of the revolving credit facility, which ranges from 0.25% to 0.45% per annum. Interest on the term loan facility and revolving credit facility is payable quarterly. Under the Credit Agreement, there are various restrictive covenants, including three financial covenants which limit the consolidated total leverage ratio, or leverage ratio, the consolidated interest coverage ratio, or interest coverage ratio, and a restriction which places a limit on the amount of capital expenditures that may be made in any fiscal year. The leverage ratio is the ratio of debt as of the measurement date to earnings before interest, taxes, depreciation and amortization, or EBITDA, for the four consecutive quarters ending with the quarter of measurement. The leverage ratio must not exceed 2.50 to 1.0 during the first two years of the agreement, and 2.0 to 1.0 during the last three years of the agreement. The interest coverage ratio is EBITDA to interest expense for the four consecutive quarters ending with the quarter of measurement. The interest coverage ratio must not be less than 3.50 to 1.0 during the term of the Credit Agreement. As of March 31, 2017, we were in compliance with the restrictive covenants. The Incremental Amendment increased the maximum permitted leverage ratio during the last three years of the agreement from 2.0:1.0 to 2.50:1.00, with a further increase to 3.00:1.00 for the first four fiscal quarters ending after any acquisition having an aggregate consideration exceeding $150,000,000 and stepping down to 2.75:1.00 thereafter, and modified the negative covenants to permit up to $50,000,000 per fiscal quarter of accounts receivable financings.

Share-Based Compensation

Share-Based Compensation	9 Months Ended
	Mar. 31, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Share-Based Compensation	11. Share-Based Compensation Share-based compensation and the related tax benefit recognized in our condensed consolidated statements of income were as follows (in millions): Three Months Ended Nine Months Ended March 31, March 31, 2017 2016 2017 2016 Cost of revenue $ 0.6 $ 0.5 $ 1.7 $ 1.3 Research and development 8.7 8.1 25.0 22.1 Selling, general, and administrative 6.8 6.4 19.6 17.5 Total $ 16.1 $ 15.0 $ 46.3 $ 40.9 Income tax benefit on share-based compensation $ 4.1 $ 4.0 $ 12.1 $ 10.8 Historically, we have issued new shares in connection with our share-based compensation plans, however, treasury shares are also now available for issuance. Any additional shares repurchased under our common stock repurchase program will be available for issuance under our share-based compensation plans. Stock Options Stock option activity, including stock options granted, exercised, and forfeited, weighted average exercise prices for stock options outstanding and exercisable, and the aggregate intrinsic value were as follows: Stock Weighted Aggregate Option Average Intrinsic Awards Exercise Value Outstanding Price (in millions) Balance as of June 30, 2016 2,711,542 $ 46.69 Granted 259,226 53.09 Exercised (275,460 ) 27.70 Forfeited (127,763 ) 71.35 Balance as of March 31, 2017 2,567,545 48.15 $ 28.9 Exercisable at March 31, 2017 1,997,524 42.33 $ 28.9 The aggregate intrinsic value was determined using the closing price of our common stock on March 24, 2017 of $49.18 and excludes the impact of stock options that were not in-the-money. Deferred Stock Units DSU activity, including DSUs granted, delivered, and forfeited, and the balance and aggregate intrinsic value of DSUs was as follows: Aggregate DSU Intrinsic Awards Value Outstanding (in millions) Balance as of June 30, 2016 1,005,981 Granted 833,069 Delivered (375,692 ) Forfeited (130,504 ) Balance as of March 31, 2017 1,332,854 $ 65.5 The aggregate intrinsic value was determined using the closing price of our common stock on March 24, 2017 of $49.18. Of the shares delivered, 96,665 shares valued at $5.2 million were withheld to meet statutory minimum tax withholding requirements. Market Stock Units Our Amended and Restated 2010 Incentive Compensation Plan provides for the grant of MSU awards to our employees, consultants, and directors. An MSU is a promise to deliver shares of our common stock at a future date based on the achievement of market-based performance requirements in accordance with the terms of the MSU grant agreement. We have granted MSUs to our executive officers, which are designed to vest in three tranches with the target quantity for each tranche equal to one-third of the total MSU grant. The first tranche vests based on a one-year performance period; the second tranche vests based on a two-year performance period; and the third tranche vests based on a three-year performance period. Performance is measured based on the achievement of a specified level of total stockholder return, or TSR, relative to the TSR of the Philadelphia Semiconductor Index, or SOX Index. The potential payout ranges from 0% to 200% of the grant target quantity and is adjusted on a two-to-one ratio based on our TSR performance relative to the SOX Index TSR performance using the following formula: (100% + ([Synaptics TSR—SOX Index TSR] x 2)) Beginning with the MSU grants in fiscal 2015, the payout for the first tranche and the second tranche will not exceed 100% and the payout for the third tranche will be calculated based on the total target quantity for the entire grant multiplied by the payout factor, which will then be reduced by shares issued for the first tranche and the second tranche. Delivery of shares earned, if any, will take place on the dates provided in the applicable MSU grant agreement, assuming the grantee is still an employee, consultant, or director of our company at the end of the applicable performance period. On the delivery date, we withhold shares to cover statutory minimum tax withholding requirements and deliver a net quantity of shares to the employee, consultant, or director after such withholding. Until delivery of shares, the grantee has no rights as a stockholder with respect to any shares underlying the MSU award. During the nine months ended March 31, 2017, MSU activity, including MSUs granted, delivered, and forfeited, and the balance and aggregate intrinsic value of MSUs as of March 31, 2017 was as follows: Aggregate MSU Intrinsic Awards Value Outstanding (in millions) Balance as of June 30, 2016 146,150 Granted 105,800 Performance adjustment (55,739 ) Delivered (10,339 ) Forfeited (27,276 ) Balance as of March 31, 2017 158,596 $ 7.8 We value MSUs using the Monte Carlo simulation model on the date of grant and amortize the compensation expense over the three-year performance and service period on a straight-line basis. The unrecognized share-based compensation cost of our outstanding MSUs was approximately $11.9 million as of March 31, 2017, which will be recognized over a weighted average period of approximately 1.3 years. Employee Stock Purchase Plan Shares purchased, weighted average purchase price, cash received, and the aggregate intrinsic value for employee stock purchase plan purchases during the nine-month period ended March 31, 2017 were as follows (in millions, except for shares purchased and weighted average price): Shares purchased 153,185 Weighted average purchase price $ 46.89 Cash received $ 7.2 Aggregate intrinsic value $ 1.3

Income Taxes

Income Taxes	9 Months Ended
	Mar. 31, 2017
Income Tax Disclosure [Abstract]
Income Taxes	12. Income Taxes We account for income taxes under the asset and liability method. We consider the operating earnings of our foreign subsidiaries to be indefinitely invested outside the United States. Therefore, no provision has been made for the federal, state, or foreign taxes that may result from future remittances of undistributed earnings of our foreign subsidiaries. The provision for income taxes recorded in interim periods is recorded by applying the estimated annual effective tax rate to year-to-date income before provision for income taxes, excluding the effects of significant unusual or infrequently occurring discrete items. The tax effects of discrete items are recorded in the same period that the related discrete items are reported and results in a difference between the actual effective tax rate and the estimated annual effective tax rate. The provision for income taxes of $6.3 million and $1.4 million for the three months ended March 31, 2017 and 2016, respectively, represented estimated federal, foreign, and state income taxes. The effective tax rate for the three months ended March 31, 2017 diverged from the combined U.S. federal and state statutory tax rate primarily because of foreign withholding taxes, nondeductible amortization, nondeductible payroll deposit penalties, and the impact of accounting for qualified stock options, partially offset by foreign income taxed at lower tax rates and research credits. The effective tax rate for the three months ended March 31, 2016, diverged from the combined U.S. federal and state statutory tax rate, primarily because of foreign income taxed at lower tax rates and research credits, which included the retroactive reinstatement of the federal research credit, partially offset by foreign withholding taxes, nondeductible amortization, and the impact of accounting for qualified stock options. The provision for income taxes of $13.9 million and $20.1 million for the nine months ended March 31, 2017 and 2016, respectively, represented estimated federal, foreign, and state income taxes. The effective tax rate for the nine months ended March 31, 2017 diverged from the combined U.S. federal and state statutory tax rate primarily because of foreign income taxed at lower tax rates and research credits, partially offset by foreign withholding taxes, nondeductible amortization, nondeductible payroll deposit penalties, and the impact of accounting for qualified stock options. The effective tax rate for the nine months ended March 31, 2016 diverged from the combined U.S. federal and state statutory tax rate, primarily because of foreign income taxed at lower tax rates and research credits, which included the retroactive reinstatement of the federal research credit, partially offset by foreign withholding taxes, nondeductible amortization, and net unrecognized tax benefits associated with qualified stock options. The total liability for gross unrecognized tax benefits related to uncertain tax positions increased $1.1 million during the nine months ended March 31, 2017 to $14.5 million from $13.4 million at June 30, 2016, and was included in other long-term liabilities on our condensed consolidated balance sheets. If recognized, the total gross unrecognized tax benefits would reduce the effective tax rate on income from continuing operations. Accrued interest and penalties related to unrecognized tax benefits as of March 31, 2017 were $1.2 million; this balance decreased $0.2 million from June 30, 2016. We classify interest and penalties as components of income tax expense. It is reasonably possible that the amount of the liability for unrecognized tax benefits may change within the next twelve months and an estimate of the range of possible changes may include an increase in our liability of up to $1.0 million. In July 2015, the U.S. Tax Court issued an opinion in Altera Corp. v. Commissioner Our major tax jurisdictions are the United States, Hong Kong SAR, and Japan. From fiscal 2010 onward, we remain subject to examination by one or more of these jurisdictions. We are currently under an income tax examination by the IRS for fiscal years 2014 and 2015.

Segment, Customers, and Geograp

Segment, Customers, and Geographic Information	9 Months Ended
	Mar. 31, 2017
Segment Reporting [Abstract]
Segment, Customers, and Geographic Information	13. Segment, Customers, and Geographic Information We operate in one segment: the development, marketing, and sale of semiconductor products used in electronic devices and products. We generate our revenue from two broad product categories: the mobile product market and the personal computing, or PC, product market. We sell our products to original equipment manufacturers, or OEMs, and to contract manufacturers that provide manufacturing services to OEMs. Net revenue within geographic areas based on our customers’ locations for the periods presented was as follows (in millions): Three Months Ended Nine Months Ended March 31, March 31, 2017 2016 2017 2016 China $ 227.5 $ 152.6 $ 634.7 $ 384.4 Japan 118.9 111.6 316.6 581.3 United States 50.8 90.0 172.1 207.3 South Korea 24.6 33.8 103.9 122.0 Taiwan 14.9 12.8 48.3 45.8 Other 7.5 1.7 16.1 2.2 $ 444.2 $ 402.5 $ 1,291.7 $ 1,343.0 Net revenue from our customers for each group of similar products was as follows (in millions): Three Months Ended Nine Months Ended March 31, March 31, 2017 2016 2017 2016 Mobile product applications $ 391.0 $ 354.2 $ 1,119.8 $ 1,174.1 PC product applications 53.2 48.3 171.9 168.9 $ 444.2 $ 402.5 $ 1,291.7 $ 1,343.0 Net revenue from major customers as a percentage of total net revenue for the periods presented was as follows: Three Months Ended Nine Months Ended March 31, March 31, 2017 2016 2017 2016 Customer A 27% 19% 24% 21% Customer B 17% 27% 19% 21% Customer C 13% * 10% * Customer D 10% 14% * 16% * Less than 10% We extend credit based on evaluation of a customer’s financial condition, and we generally do not require collateral. Major customer accounts receivable as a percentage of total accounts receivable were as follows: March 31, June 30, 2017 2016 Customer A 16% * Customer B 15% 10% Customer C 14% 12% Customer D 14% 14% Customer E * 13% Customer F * 11% * Less than 10%

Comprehensive Income

Comprehensive Income	9 Months Ended
	Mar. 31, 2017
Equity [Abstract]
Comprehensive Income	14. Comprehensive Income Our comprehensive income generally consists of net income plus the effect of unrealized gains and losses on our investments, primarily due to temporary changes in market value of certain of our ARS investments. In addition, we recognize the noncredit portion of other-than-temporary impairment on debt securities in other comprehensive income. We recognize foreign currency remeasurement adjustments and foreign currency transaction gains and losses in our condensed consolidated statements of income as the U.S. dollar is the functional currency of our foreign entities.

Restructuring Activities Announ

Restructuring Activities Announced June 2016	9 Months Ended
	Mar. 31, 2017
Restructuring And Related Activities [Abstract]
Restructuring Activities Announced June 2016	15. Restructuring Activities Announced June 2016 In June 2016, our management approved, committed to and initiated plans to restructure and further improve efficiencies in our operational activities to align the Company’s cost structure consistent with its revenue levels. Restructuring costs related to the June 2016 restructuring activities were recorded to the restructuring costs line item within our condensed consolidated statements of income. These costs primarily related to severance costs for a reduction in headcount and facility consolidation and related costs. The total charges were $11.7 million for severance costs and $2.3 million for lease cancellation and related charges. The restructuring charges for employee severance and benefits costs and the facility consolidation and related charges actions are complete. The restructuring liability activities during the nine months ended March 31, 2017 were as follows (in millions): Employee Severance Facility Consolidation and Benefits and Related Charges Total Balance as of June 30, 2016 $ 6.7 $ - $ 6.7 Additional accruals 5.0 2.3 7.3 Cash payments (11.6 ) (0.6 ) (12.2 ) Non-cash settlements - (0.8 ) (0.8 ) Balance as of March 31, 2017 $ 0.1 $ 0.9 $ 1.0 Since the fourth quarter of our fiscal 2016, we have incurred a total of $7.3 million in restructuring charges. These charges include $5.0 million related to employee severance and benefits arrangements and $2.3 million in facility consolidation and related charges.

Basis of Presentation (Policies

Basis of Presentation (Policies)	9 Months Ended
	Mar. 31, 2017
Accounting Policies [Abstract]
Use of Estimates	Use of Estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenue, expenses, and related disclosure of contingent assets and liabilities. On an ongoing basis, we evaluate our estimates, including those related to revenue recognition, allowance for doubtful accounts, cost of revenue, inventories, loss on purchase commitments, product warranty, accrued liabilities, share-based compensation costs, provision for income taxes, deferred income tax asset valuation allowances, uncertain tax positions, goodwill, intangible assets, investments, contingent consideration liability and loss contingencies. We base our estimates on historical experience, applicable laws and regulations, and various other assumptions that we believe to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.
Foreign Currency Transactions and Foreign Exchange Contracts	Foreign Currency Transactions and Foreign Exchange Contracts The U.S. dollar is our functional and reporting currency. We remeasure our monetary assets and liabilities not denominated in the functional currency into U.S. dollar equivalents at the rate of exchange in effect on the balance sheet date. We measure and record non-monetary balance sheet accounts at the historical rate in effect at the date of transaction. We remeasure foreign currency expenses at the weighted average exchange rate in the month that the transaction occurred. Our foreign currency transactions and remeasurement gains and losses are included in selling, general, and administrative expenses in the condensed consolidated statements of income, and resulted in net losses of $0.4 million in the three and nine months ended March 31, 2017, and net losses of $3.3 million and $5.1 million in the three and nine months ended March 31, 2016, respectively. We enter into foreign currency contracts to manage exposure related to certain foreign currency obligations. The foreign currency contracts are not designated as hedging instruments and, accordingly, are not subject to hedge accounting. In fiscal year 2015, we entered into foreign currency forward contracts to purchase Japanese yen, using U.S. dollars. As of March 31, 2017, we had no outstanding foreign currency forward contracts. In the nine months ended March 31, 2017, and 2016 we recognized net gains of zero and $4.8 million, respectively, on the foreign currency forward contracts, which are recorded in selling, general, and administrative expenses in the condensed consolidated statements of income.
Recently Issued Accounting Pronouncements Not Yet Effective	Recently Issued Accounting Pronouncements Not Yet Effective In October 2016, the Financial Accounting Standards Board, or FASB, , or ASU, In August 2016, the FASB issued an ASU on Statement of Cash Flows-Classification of Certain Cash Receipts and Cash Payments. This ASU will be effective for us beginning in the first quarter of fiscal 2019 on a retrospective basis, and early adoption is permitted. We are evaluating the impact of this ASU on our condensed consolidated statements of cash flows. In May 2014, the FASB issued an ASU on Revenue from Contracts with Customers. The ASU will supersede most of the existing revenue recognition guidance in U.S. GAAP when the new standard becomes effective, and requires entities to recognize revenue when they transfer promised goods or services to customers in an amount that reflects the consideration which the entity expects to be entitled to in exchange for those goods or services. The ASU is effective for us in our fiscal year 2019, with early adoption permitted in the first quarter of fiscal 2018. We are currently in the process of evaluating the impact of the adoption of this ASU on our condensed consolidated financial statements and considering additional disclosure requirements. The new standard permits the use of either the retrospective or cumulative effect transition method. We have not yet selected a transition method or determined the effect of the standard on our ongoing financial reporting. In March 2016, the FASB issued an ASU for Compensation-Stock Compensation. This update simplifies several aspects of the accounting for employee share-based payment transactions including the accounting for income taxes, forfeitures, and statutory tax withholding requirements, as well as classification in the statement of cash flows. The ASU will be effective for us beginning in the first quarter of fiscal 2018, with early adoption permitted. While we continue to evaluate the effects of adoption of this ASU on our condensed consolidated In February 2016, the FASB issued an ASU on Leases. This update requires organizations that lease assets with lease terms of more than 12 months to recognize assets and liabilities for the rights and obligations created by those leases on their balance sheets. It also requires new qualitative and quantitative disclosures to help investors and other financial statement users better understand the amount, timing, and uncertainty of cash flows arising from leases. The new standard will be effective for us beginning in the first quarter of our fiscal year 2020, with early adoption permitted. We are evaluating the effects of adoption of this ASU on our condensed consolidated In January 2016, the FASB issued an ASU on Recognition and Measurement of Financial Assets and Financial Liabilities, which provides guidance for the recognition, measurement, presentation, and disclosure of financial assets and liabilities. This ASU will be effective for us beginning in our first quarter of fiscal 2019, with early adoption permitted. We are evaluating the effects of the adoption of this ASU on our condensed consolidated In July 2015, the FASB issued an ASU that requires an entity to measure inventory at the lower of cost and net realizable value when the first-in, first-out, or average cost method is used. Net realizable value is the estimated selling price in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. The ASU will become effective for us in our first quarter of fiscal 2018, with early adoption permitted. We are evaluating the effects of the adoption of this ASU on our condensed consolidated

Net Income Per Share (Tables)

Net Income Per Share (Tables)	9 Months Ended
	Mar. 31, 2017
Earnings Per Share [Abstract]
Computation of Basic and Diluted Net Income Per Share	The computation of basic and diluted net income per share was as follows (in millions, except per share data): Three Months Ended Nine Months Ended March 31, March 31, 2017 2016 2017 2016 Numerator: Net income $ 4.5 $ 20.5 $ 31.0 $ 79.3 Denominator: Shares, basic 34.8 36.8 34.9 36.7 Effect of dilutive share-based awards 0.6 1.1 0.8 1.3 Shares, diluted 35.4 37.9 35.7 38.0 Net income per share: Basic $ 0.13 $ 0.56 $ 0.89 $ 2.16 Diluted $ 0.13 $ 0.54 $ 0.87 $ 2.09

Fair Value (Tables)

Fair Value (Tables)	9 Months Ended
	Mar. 31, 2017
Fair Value Disclosures [Abstract]
Financial Assets Measured at Fair Value on a Recurring Basis	Financial assets measured at fair value on a recurring basis by level within the fair value hierarchy, consisted of the following (in millions): March 31, June 30, 2017 2016 Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 Assets: Money market funds $ 311.0 $ - $ - $ 319.1 $ - $ - Auction rate securities - - 1.5 - - 8.6 Total available-for-sale securities $ 311.0 $ - $ 1.5 $ 319.1 $ - $ 8.6
Changes in Fair Value of Level 3 Financial Assets	The changes in fair value of our Level 3 financial assets as of March 31, 2017 were as follows: Balance as of June 30, 2016 $ 8.6 Net unrealized loss (1.5 ) Impairment recovery on redeemed investments 1.9 Redemptions (7.5 ) Balance as of March 31, 2017 $ 1.5

Auction Rate Securities (Tables

Auction Rate Securities (Tables)	9 Months Ended
	Mar. 31, 2017
Text Block [Abstract]
ARS Investments	The ARS investments we held as of March 31, 2017, including the original cost basis, other-than-temporary impairment included in retained earnings, new cost basis, unrealized gain, and fair value, consisted of the following (in millions): Original Cost Basis Other-than- temporary Impairment in Retained Earnings New Cost Basis Unrealized Gain Fair Value Preferred stock $ 5.0 $ (5.0 ) $ - $ 1.5 $ 1.5 The ARS investments we held as of June 30, 2016, including the original cost basis, other-than-temporary impairment included in retained earnings, new cost basis, unrealized gain, and fair value, consisted of the following (in millions): Original Cost Basis Other-than- temporary Impairment in Retained Earnings New Cost Basis Unrealized Gain Fair Value Credit linked notes $ 7.5 $ (2.2 ) (1) $ 5.3 $ 1.8 $ 7.1 Preferred stock 5.0 (5.0 ) - 1.5 1.5 Total ARS $ 12.5 $ (7.2 ) $ 5.3 $ 3.3 $ 8.6 (1) Other-than-temporary impairment in retained earnings is partially offset by cumulative accretion of $4.4 million on non-current investments. Accretion is reclassified from accumulated other comprehensive income and recorded in the condensed consolidated statements of income as non-cash interest income.

Inventories (Tables)

Inventories (Tables)	9 Months Ended
	Mar. 31, 2017
Inventory Disclosure [Abstract]
Inventories	Inventories are stated at the lower of cost (first-in, first-out method) or market and consisted of the following (in millions): March 31, June 30, 2017 2016 Raw materials $ 95.0 $ 59.2 Finished goods 62.0 87.2 $ 157.0 $ 146.4

Acquired Intangibles (Tables)

Acquired Intangibles (Tables)	9 Months Ended
	Mar. 31, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Summary of Life, Gross Carrying Value and Related Accumulated Amortization of Acquired Intangible Assets	The following table summarizes the life, the gross carrying value and the related accumulated amortization of our acquired intangible assets as of March 31, 2017 and June 30, 2016 (in millions): Weighted Average Life in Years March 31, 2017 June 30, 2016 Display driver technology 5.3 $ 164.0 $ 164.0 Fingerprint authentication technology 4.3 63.5 75.6 Customer relationships 2.8 48.4 48.4 Licensed technology and other 5.0 1.3 1.3 Patents 7.7 4.7 4.8 Supplier arrangement - 22.0 Acquired intangibles, gross 4.5 281.9 316.1 Accumulated amortization (166.8 ) (155.8 ) Acquired intangibles, net $ 115.1 $ 160.3
Schedule of Expected Annual Aggregate Amortization Expense	The following table presents expected annual fiscal year aggregate amortization expense as of March 31, 2017 (in millions): Remainder of 2017 $ 14.1 2018 48.6 2019 34.2 2020 10.6 2021 3.5 2022 3.5 Thereafter 0.6 Future amortization $ 115.1

Other Accrued Liabilities (Tabl

Other Accrued Liabilities (Tables)	9 Months Ended
	Mar. 31, 2017
Payables And Accruals [Abstract]
Other Accrued Liabilities	Other accrued liabilities consisted of the following (in millions): March 31, June 30, 2017 2016 Customer obligations $ 35.3 $ 34.8 Inventory obligations 33.0 24.0 Warranty 3.7 3.5 Other 30.7 20.0 $ 102.7 $ 82.3

Share-Based Compensation (Table

Share-Based Compensation (Tables)	9 Months Ended
	Mar. 31, 2017
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-Based Compensation and Related Tax Benefit Recognized in Condensed Consolidated Statements of Income	Share-based compensation and the related tax benefit recognized in our condensed consolidated statements of income were as follows (in millions): Three Months Ended Nine Months Ended March 31, March 31, 2017 2016 2017 2016 Cost of revenue $ 0.6 $ 0.5 $ 1.7 $ 1.3 Research and development 8.7 8.1 25.0 22.1 Selling, general, and administrative 6.8 6.4 19.6 17.5 Total $ 16.1 $ 15.0 $ 46.3 $ 40.9 Income tax benefit on share-based compensation $ 4.1 $ 4.0 $ 12.1 $ 10.8
Balance of Outstanding and Exercisable Stock Options	Stock option activity, including stock options granted, exercised, and forfeited, weighted average exercise prices for stock options outstanding and exercisable, and the aggregate intrinsic value were as follows: Stock Weighted Aggregate Option Average Intrinsic Awards Exercise Value Outstanding Price (in millions) Balance as of June 30, 2016 2,711,542 $ 46.69 Granted 259,226 53.09 Exercised (275,460 ) 27.70 Forfeited (127,763 ) 71.35 Balance as of March 31, 2017 2,567,545 48.15 $ 28.9 Exercisable at March 31, 2017 1,997,524 42.33 $ 28.9
Shares Purchased, Weighted Average Purchase Price, Cash Received, and Aggregate Intrinsic Value for ESPP	Shares purchased, weighted average purchase price, cash received, and the aggregate intrinsic value for employee stock purchase plan purchases during the nine-month period ended March 31, 2017 were as follows (in millions, except for shares purchased and weighted average price): Shares purchased 153,185 Weighted average purchase price $ 46.89 Cash received $ 7.2 Aggregate intrinsic value $ 1.3
Market stock units outstanding [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Balance and Aggregate Intrinsic Value of Stock Units	During the nine months ended March 31, 2017, MSU activity, including MSUs granted, delivered, and forfeited, and the balance and aggregate intrinsic value of MSUs as of March 31, 2017 was as follows: Aggregate MSU Intrinsic Awards Value Outstanding (in millions) Balance as of June 30, 2016 146,150 Granted 105,800 Performance adjustment (55,739 ) Delivered (10,339 ) Forfeited (27,276 ) Balance as of March 31, 2017 158,596 $ 7.8
Deferred stock units outstanding [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Balance and Aggregate Intrinsic Value of Stock Units	DSU activity, including DSUs granted, delivered, and forfeited, and the balance and aggregate intrinsic value of DSUs was as follows: Aggregate DSU Intrinsic Awards Value Outstanding (in millions) Balance as of June 30, 2016 1,005,981 Granted 833,069 Delivered (375,692 ) Forfeited (130,504 ) Balance as of March 31, 2017 1,332,854 $ 65.5

Segment, Customers, and Geogr30

Segment, Customers, and Geographic Information (Tables)	9 Months Ended
	Mar. 31, 2017
Net Revenue within Geographic Areas Based on Customers' Locations	Net revenue within geographic areas based on our customers’ locations for the periods presented was as follows (in millions): Three Months Ended Nine Months Ended March 31, March 31, 2017 2016 2017 2016 China $ 227.5 $ 152.6 $ 634.7 $ 384.4 Japan 118.9 111.6 316.6 581.3 United States 50.8 90.0 172.1 207.3 South Korea 24.6 33.8 103.9 122.0 Taiwan 14.9 12.8 48.3 45.8 Other 7.5 1.7 16.1 2.2 $ 444.2 $ 402.5 $ 1,291.7 $ 1,343.0
Net Revenue from External Customers	Net revenue from our customers for each group of similar products was as follows (in millions): Three Months Ended Nine Months Ended March 31, March 31, 2017 2016 2017 2016 Mobile product applications $ 391.0 $ 354.2 $ 1,119.8 $ 1,174.1 PC product applications 53.2 48.3 171.9 168.9 $ 444.2 $ 402.5 $ 1,291.7 $ 1,343.0
Sales Revenue, Net [Member]
Major Customers as Percentage of Net Revenue	Net revenue from major customers as a percentage of total net revenue for the periods presented was as follows: Three Months Ended Nine Months Ended March 31, March 31, 2017 2016 2017 2016 Customer A 27% 19% 24% 21% Customer B 17% 27% 19% 21% Customer C 13% * 10% * Customer D 10% 14% * 16% * Less than 10%
Accounts Receivable [Member]
Major Customers as Percentage of Net Revenue	Major customer accounts receivable as a percentage of total accounts receivable were as follows: March 31, June 30, 2017 2016 Customer A 16% * Customer B 15% 10% Customer C 14% 12% Customer D 14% 14% Customer E * 13% Customer F * 11% * Less than 10%

Restructuring Activities Anno31

Restructuring Activities Announced June 2016 (Tables)	9 Months Ended
	Mar. 31, 2017
Restructuring And Related Activities [Abstract]
Restructuring Liability Activities	The restructuring liability activities during the nine months ended March 31, 2017 were as follows (in millions): Employee Severance Facility Consolidation and Benefits and Related Charges Total Balance as of June 30, 2016 $ 6.7 $ - $ 6.7 Additional accruals 5.0 2.3 7.3 Cash payments (11.6 ) (0.6 ) (12.2 ) Non-cash settlements - (0.8 ) (0.8 ) Balance as of March 31, 2017 $ 0.1 $ 0.9 $ 1.0

Basis of Presentation - Additio

Basis of Presentation - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Basis Of Presentation [Line Items]
Net gain (loss) on foreign currency transactions	$ (400,000)	$ (3,300,000)	$ (400,000)	$ (5,100,000)
Forward Contracts
Basis Of Presentation [Line Items]
Net gain (loss) on foreign currency transactions			0	$ 4,800,000
Foreign currency forward contracts outstanding amount	$ 0		$ 0

Net Income Per Share - Computat

Net Income Per Share - Computation of Basic and Diluted Net Income Per Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Numerator:
Net income	$ 4.5	$ 20.5	$ 31	$ 79.3
Denominator:
Shares, basic	34.8	36.8	34.9	36.7
Effect of dilutive share-based awards	0.6	1.1	0.8	1.3
Shares, diluted	35.4	37.9	35.7	38
Net income per share:
Basic	$ 0.13	$ 0.56	$ 0.89	$ 2.16
Diluted	$ 0.13	$ 0.54	$ 0.87	$ 2.09

Net Income Per Share - Addition

Net Income Per Share - Additional Information (Detail) - shares	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Share-Based Awards [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Common shares that were not included in computation of diluted net income per share	2,380,552	756,328	1,739,783	894,251

Fair Value - Financial Assets M

Fair Value - Financial Assets Measured at Fair Value on a Recurring Basis (Detail) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Millions	Mar. 31, 2017	Jun. 30, 2016
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	$ 311	$ 319.1
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	1.5	8.6
Money Market Funds [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	311	319.1
Auction Rate Securities [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	$ 1.5	$ 8.6

Fair Value - Additional Informa

Fair Value - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Fair Value Disclosures [Abstract]
Transfer amount of assets of level one	$ 0	$ 0	$ 0	$ 0
Transfer amount of assets of level two	0	0	0	0
Transfer amount of assets of level three	0	0	0	0
Transfer amount of assets out of level three	$ 0	$ 0	$ 0	$ 0

Fair Value - Changes in Fair Va

Fair Value - Changes in Fair Value of Level 3 Financial Assets (Detail) $ in Millions	9 Months Ended
	Mar. 31, 2017USD ($)
Fair Value Disclosures [Abstract]
Balance as of June 30, 2016	$ 8.6
Net unrealized loss	(1.5)
Impairment recovery on redeemed investments	1.9
Redemptions	(7.5)
Balance as of March 31, 2017	$ 1.5

Auction Rate Securities - Addit

Auction Rate Securities - Additional Information (Detail) $ in Millions	Mar. 31, 2017USD ($)
Investments Debt And Equity Securities [Abstract]
Auction Rate Securities with fair value having no stated maturity	$ 1.5

Auction Rate Securities - ARS I

Auction Rate Securities - ARS Investments (Detail) - Auction Rate Securities Investments [Member] - USD ($) $ in Millions		Mar. 31, 2017	Jun. 30, 2016
Schedule of Available-for-sale Securities [Line Items]
Original Cost Basis			$ 12.5
Other-than- temporary Impairment in Retained Earnings			(7.2)
New Cost Basis			5.3
Unrealized Gain			3.3
Fair Value			8.6
Preferred Stock [Member]
Schedule of Available-for-sale Securities [Line Items]
Original Cost Basis		$ 5	5
Other-than- temporary Impairment in Retained Earnings		(5)	(5)
Unrealized Gain		1.5	1.5
Fair Value		$ 1.5	1.5
Credit Linked Notes [Member]
Schedule of Available-for-sale Securities [Line Items]
Original Cost Basis			7.5
Other-than- temporary Impairment in Retained Earnings	[1]		(2.2)
New Cost Basis			5.3
Unrealized Gain			1.8
Fair Value			$ 7.1
[1]	Other-than-temporary impairment in retained earnings is partially offset by cumulative accretion of $4.4 million on non-current investments. Accretion is reclassified from accumulated other comprehensive income and recorded in the condensed consolidated statements of income as non-cash interest income.

Auction Rate Securities - ARS40

Auction Rate Securities - ARS Investments (Parenthetical) (Detail) $ in Millions	Jun. 30, 2016USD ($)
Investments Debt And Equity Securities [Abstract]
Investment securities accretion	$ 4.4

Inventories - Inventories (Deta

Inventories - Inventories (Detail) - USD ($) $ in Millions	Mar. 31, 2017	Jun. 30, 2016
Inventory Disclosure [Abstract]
Raw materials	$ 95	$ 59.2
Finished goods	62	87.2
Total Inventories	$ 157	$ 146.4

Acquired Intangibles - Summary

Acquired Intangibles - Summary of Life, Gross Carrying Value and Related Accumulated Amortization of Acquired Intangible Assets (Detail) - USD ($) $ in Millions	9 Months Ended
	Mar. 31, 2017	Jun. 30, 2016
Finite-Lived Intangible Assets [Line Items]
Acquired intangibles, gross	$ 281.9	$ 316.1
Accumulated amortization	(166.8)	(155.8)
Acquired intangibles, net	$ 115.1	160.3
Weighted Average Life in Years	4 years 6 months
Display Driver Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Acquired intangibles, gross	$ 164	164
Weighted Average Life in Years	5 years 3 months 18 days
Fingerprint Authentication Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Acquired intangibles, gross	$ 63.5	75.6
Weighted Average Life in Years	4 years 3 months 18 days
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Acquired intangibles, gross	$ 48.4	48.4
Weighted Average Life in Years	2 years 9 months 18 days
Licensed Technology and Other [Member]
Finite-Lived Intangible Assets [Line Items]
Acquired intangibles, gross	$ 1.3	1.3
Weighted Average Life in Years	5 years
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Acquired intangibles, gross	$ 4.7	4.8
Weighted Average Life in Years	7 years 8 months 12 days
Supplier Arrangement [Member]
Finite-Lived Intangible Assets [Line Items]
Acquired intangibles, gross		$ 22

Acquired Intangibles - Addition

Acquired Intangibles - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Goodwill And Intangible Assets Disclosure [Abstract]
Acquired intangibles amortization	$ 14	$ 17.7	$ 45.2	$ 55.6

Acquired Intangibles - Schedule

Acquired Intangibles - Schedule of Expected Annual Aggregate Amortization Expense (Detail) - USD ($) $ in Millions	Mar. 31, 2017	Jun. 30, 2016
Goodwill And Intangible Assets Disclosure [Abstract]
Remainder of 2017	$ 14.1
2,018	48.6
2,019	34.2
2,020	10.6
2,021	3.5
2,022	3.5
Thereafter	0.6
Acquired intangibles, net	$ 115.1	$ 160.3

Other Accrued Liabilities - Oth

Other Accrued Liabilities - Other Accrued Liabilities (Detail) - USD ($) $ in Millions	Mar. 31, 2017	Jun. 30, 2016
Payables And Accruals [Abstract]
Customer obligations	$ 35.3	$ 34.8
Inventory obligations	33	24
Warranty	3.7	3.5
Other	30.7	20
Other accrued liabilities	$ 102.7	$ 82.3

Indemnifications, Contingenci46

Indemnifications, Contingencies and Legal Proceedings - Additional Information (Detail) - Mar. 31, 2017 ¥ in Millions, $ in Millions	USD ($)	JPY (¥)
Commitments Contingencies And Litigation [Line Items]
Contingent consideration liabilities recorded for business combinations	$ 8.7
IIX Inc [Member]
Commitments Contingencies And Litigation [Line Items]
Indemnification Holdback Liability Non-current	$ 5.8	¥ 648

Debt - Additional Information (

Debt - Additional Information (Detail) - USD ($)	Apr. 06, 2017	Mar. 31, 2017	Mar. 31, 2016	Oct. 20, 2015	Sep. 30, 2014
Debt Instrument [Line Items]
Debt issuance cost			$ 300,000
Percentage of voting capital stock		65.00%
Description of periodic payments		The term loan facility requires repayment over five years with nineteen quarterly principal payments, which began in the three months ended March 31, 2015.
Quarterly payment beginning period		Mar. 31, 2015
Final principal payment		$ 90,000,000
First Four Quarters [Member]
Debt Instrument [Line Items]
Quarterly principal payment		1,900,000
Next Fourteen Quarters [Member]
Debt Instrument [Line Items]
Quarterly principal payment		3,800,000
Credit Agreement [Member] | Bridge Loan [Member]
Debt Instrument [Line Items]
Line of credit facility amount		20,000,000
Credit Agreement [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Additional borrowing capacity				$ 100,000,000
Line of credit facility amount				$ 250,000,000	$ 150,000,000
Amount borrowed under revolving credit facility		$ 100,000,000
Credit Agreement [Member] | Revolving Credit Facility [Member] | Minimum [Member]
Debt Instrument [Line Items]
Commitment fee percentage of unused portion		0.25%
Credit Agreement [Member] | Revolving Credit Facility [Member] | Maximum [Member]
Debt Instrument [Line Items]
Commitment fee percentage of unused portion		0.45%
Credit Agreement [Member] | Revolving Credit Facility [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Additional borrowing capacity	$ 200,000,000
Line of credit facility amount	$ 450,000,000
Credit Agreement [Member] | Letter of Credit [Member]
Debt Instrument [Line Items]
Line of credit facility amount		$ 20,000,000
Credit Agreement [Member] | Term Loan Facility [Member]
Debt Instrument [Line Items]
Line of credit facility amount		150,000,000
Amount borrowed under revolving credit facility		150,000,000
Credit Agreement [Member] | Revolving Credit and Term Loan Facility [Member]
Debt Instrument [Line Items]
Debt issuance cost		$ 5,000,000
Debt amortization period		60 months
Description of Base Rate		The revolving credit facility and term loans under the Credit Agreement bear interest at our election of a Base Rate plus an applicable margin or LIBOR plus an applicable margin. Swingline loans bear interest at a Base Rate plus an applicable margin. The Base Rate is the greater of the Prime Rate, the Federal Funds Rate plus 50 basis points, or LIBOR plus 100 basis points. The applicable margin is based on a sliding scale which ranges from zero to 100 basis points for Base Rate loans and 100 basis points to 200 basis points for LIBOR loans.
Maturity period		Sep. 30, 2019
Covenant description		Under the Credit Agreement, there are various restrictive covenants, including three financial covenants which limit the consolidated total leverage ratio, or leverage ratio, the consolidated interest coverage ratio, or interest coverage ratio, and a restriction which places a limit on the amount of capital expenditures that may be made in any fiscal year. The leverage ratio is the ratio of debt as of the measurement date to earnings before interest, taxes, depreciation and amortization, or EBITDA, for the four consecutive quarters ending with the quarter of measurement. The leverage ratio must not exceed 2.50 to 1.0 during the first two years of the agreement, and 2.0 to 1.0 during the last three years of the agreement. The interest coverage ratio is EBITDA to interest expense for the four consecutive quarters ending with the quarter of measurement. The interest coverage ratio must not be less than 3.50 to 1.0 during the term of the Credit Agreement. As of March 31, 2017, we were in compliance with the restrictive covenants.
Credit Agreement [Member] | Revolving Credit and Term Loan Facility [Member] | Minimum [Member]
Debt Instrument [Line Items]
Interest rates on borrowings		1.85%
Credit Agreement [Member] | Revolving Credit and Term Loan Facility [Member] | Maximum [Member]
Debt Instrument [Line Items]
Interest rates on borrowings		2.86%
Credit Agreement [Member] | Revolving Credit and Term Loan Facility [Member] | Federal Funds Effective Swap Rate [Member]
Debt Instrument [Line Items]
Basis spread on variable rate		0.50%
Credit Agreement [Member] | Revolving Credit and Term Loan Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Basis spread on variable rate		1.00%
Credit Agreement [Member] | Revolving Credit and Term Loan Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]
Debt Instrument [Line Items]
Basis spread on variable rate		1.00%
Credit Agreement [Member] | Revolving Credit and Term Loan Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]
Debt Instrument [Line Items]
Basis spread on variable rate		2.00%
Credit Agreement [Member] | Revolving Credit and Term Loan Facility [Member] | Base Rate [Member] | Minimum [Member]
Debt Instrument [Line Items]
Basis spread on variable rate		0.00%
Credit Agreement [Member] | Revolving Credit and Term Loan Facility [Member] | Base Rate [Member] | Maximum [Member]
Debt Instrument [Line Items]
Basis spread on variable rate		1.00%
Credit Agreement [Member] | Revolving Credit and Term Loan Facility [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Covenant description	The Incremental Amendment increased the maximum permitted leverage ratio during the last three years of the agreement from 2.0:1.0 to 2.50:1.00, with a further increase to 3.00:1.00 for the first four fiscal quarters ending after any acquisition having an aggregate consideration exceeding $150,000,000 and stepping down to 2.75:1.00 thereafter, and modified the negative covenants to permit up to $50,000,000 per fiscal quarter of accounts receivable financings.
Maximum leverage ratio permitted	250.00%
Minimum acquisition consideration under credit agreement	$ 150,000,000
Maximum accounts receivable financings per quarter	$ 50,000,000
Credit Agreement [Member] | Revolving Credit and Term Loan Facility [Member] | Subsequent Event [Member] | Last Three Years of Agreement [Member]
Debt Instrument [Line Items]
Maximum leverage ratio permitted	200.00%
Credit Agreement [Member] | Revolving Credit and Term Loan Facility [Member] | Subsequent Event [Member] | For The First Four Fiscal Quarters Ending After Any Acquisition [Member]
Debt Instrument [Line Items]
Maximum leverage ratio permitted	300.00%
Credit Agreement [Member] | Revolving Credit and Term Loan Facility [Member] | Subsequent Event [Member] | Thereafter [Member]
Debt Instrument [Line Items]
Maximum leverage ratio permitted	275.00%
Credit Agreement and Related Amendments [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Amount borrowed under revolving credit facility		$ 223,800,000

Share-Based Compensation - Shar

Share-Based Compensation - Share-Based Compensation and Related Tax Benefit Recognized in Condensed Consolidated Statements of Income (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total	$ 16.1	$ 15	$ 46.3	$ 40.9
Income tax benefit on share-based compensation	4.1	4	12.1	10.8
Cost of Revenue [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total	0.6	0.5	1.7	1.3
Research and Development [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total	8.7	8.1	25	22.1
Selling, General, and Administrative [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total	$ 6.8	$ 6.4	$ 19.6	$ 17.5

Stock Based Compensation - Bala

Stock Based Compensation - Balance of Outstanding and Exercisable Stock Options (Detail) $ / shares in Units, $ in Millions	9 Months Ended
	Mar. 31, 2017USD ($)$ / sharesshares
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock Option Awards Outstanding, Balance as of June 30, 2016 | shares	2,711,542
Stock Option Awards Outstanding, Granted | shares	259,226
Stock Option Awards Outstanding, Exercised | shares	(275,460)
Stock Option Awards Outstanding, Forfeited | shares	(127,763)
Stock Option Awards Outstanding, Balance as of March 31, 2017 | shares	2,567,545
Stock Option Awards Outstanding, Exercisable at March 31, 2017 | shares	1,997,524
Weighted Average Exercise Price, Balance as of June 30, 2016 | $ / shares	$ 46.69
Weighted Average Exercise Price, Granted | $ / shares	53.09
Weighted Average Exercise Price, Exercised | $ / shares	27.70
Weighted Average Exercise Price, Forfeited | $ / shares	71.35
Weighted Average Exercise Price, Balance as of March 31, 2017 | $ / shares	48.15
Weighted Average Exercise Price, Exercisable at March 31, 2017 | $ / shares	$ 42.33
Aggregate Intrinsic Value, Balance as of March 31, 2017 | $	$ 28.9
Aggregate Intrinsic Value, Exercisable at March 31, 2017 | $	$ 28.9

Share-Based Compensation - Stoc

Share-Based Compensation - Stock Options - Additional Information (Detail)	Mar. 24, 2017$ / shares
Stock option outstanding [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Closing price of common stock used to calculate Aggregate intrinsic value of stock option outstanding	$ 49.18

Share-Based Compensation - Bala

Share-Based Compensation - Balance and Aggregate Intrinsic Value of Stock Units (Detail) $ in Millions	9 Months Ended
	Mar. 31, 2017USD ($)shares
Deferred stock units outstanding [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock Unit Awards Outstanding, Balance as of June 30, 2016	1,005,981
Stock Unit Awards, Granted	833,069
Stock Unit Awards, Delivered	(375,692)
Stock Unit Awards, Forfeited	(130,504)
Stock Unit Awards Outstanding, Balance as of March 31, 2017	1,332,854
Aggregate Intrinsic Value, Balance as of March 31, 2017 | $	$ 65.5
Market stock units outstanding [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock Unit Awards Outstanding, Balance as of June 30, 2016	146,150
Stock Unit Awards, Granted	105,800
Stock Unit Awards, Performance adjustment	(55,739)
Stock Unit Awards, Delivered	(10,339)
Stock Unit Awards, Forfeited	(27,276)
Stock Unit Awards Outstanding, Balance as of March 31, 2017	158,596
Aggregate Intrinsic Value, Balance as of March 31, 2017 | $	$ 7.8

Share-Based Compensation - Defe

Share-Based Compensation - Deferred Stock Units - Additional Information (Detail) - Deferred stock units outstanding [Member] - USD ($) $ / shares in Units, $ in Millions	9 Months Ended
	Mar. 31, 2017	Mar. 24, 2017
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Closing price of common stock used to calculate Aggregate intrinsic value of stock option outstanding		$ 49.18
Shares withheld to meet statutory minimum tax withholding requirements	96,665
Shares valued withheld to meet statutory minimum tax withholding requirements	$ 5.2

Share-Based Compensation - Mark

Share-Based Compensation - Market Stock Units - Additional Information (Detail) - Market stock units outstanding [Member] $ in Millions	9 Months Ended
	Mar. 31, 2017USD ($)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Potential payout adjustment ratio	200.00%
Unrecognized share-based compensation cost	$ 11.9
Unrecognized share-based compensation, period for recognition	1 year 3 months 18 days
Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Potential payout range	0.00%
Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Potential payout range	200.00%
Share-based Compensation Award, First Tranche [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period of the underlying awards	1 year
Vesting percentage of the underlying awards	33.33%
Share-based Compensation Award, First Tranche [Member] | Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Potential payout range	100.00%
Share-based Compensation Award, Second Tranche [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period of the underlying awards	2 years
Vesting percentage of the underlying awards	33.33%
Share-based Compensation Award, Second Tranche [Member] | Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Potential payout range	100.00%
Share-based Compensation Award, Third Tranche [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period of the underlying awards	3 years
Vesting percentage of the underlying awards	33.33%

Share-Based Compensation - Sh54

Share-Based Compensation - Shares Purchased, Weighted Average Purchase Price, Cash Received, and Aggregate Intrinsic Value for ESPP (Detail) $ / shares in Units, $ in Millions	9 Months Ended
	Mar. 31, 2017USD ($)$ / sharesshares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Aggregate intrinsic value	$ 28.9
Employee Stock Purchase Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares purchased | shares	153,185
Weighted average purchase price | $ / shares	$ 46.89
Cash received	$ 7.2
Aggregate intrinsic value	$ 1.3

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016	Jun. 30, 2016
Income Tax Disclosure [Line Items]
Provision for income taxes	$ 6.3	$ 1.4	$ 13.9	$ 20.1
Gross unrecognized tax benefits	14.5		14.5		$ 13.4
Gross unrecognized tax benefits increased during the year			1.1
Interest and penalties accrued related to unrecognized tax benefits	1.2		1.2
Decrease in interest and penalties accrued related to unrecognized tax benefits			0.2
Maximum [Member]
Income Tax Disclosure [Line Items]
Estimated increase in unrecognized tax benefit in next twelve months	$ 1		$ 1

Segment, Customers, and Geogr56

Segment, Customers, and Geographic Information - Additional Information (Detail)	9 Months Ended
	Mar. 31, 2017SegmentProduct
Segment Reporting [Abstract]
Number of operating segments | Segment	1
Number of product | Product	2

Segment, Customers, and Geogr57

Segment, Customers, and Geographic Information - Net Revenue within Geographic Areas Based on Customers' Locations (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenue	$ 444.2	$ 402.5	$ 1,291.7	$ 1,343
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenue	227.5	152.6	634.7	384.4
Japan [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenue	118.9	111.6	316.6	581.3
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenue	50.8	90	172.1	207.3
South Korea [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenue	24.6	33.8	103.9	122
Taiwan [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenue	14.9	12.8	48.3	45.8
Other [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenue	$ 7.5	$ 1.7	$ 16.1	$ 2.2

Segment, Customers, and Geogr58

Segment, Customers, and Geographic Information - Net Revenue from External Customers (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Revenue from External Customer [Line Items]
Net revenue	$ 444.2	$ 402.5	$ 1,291.7	$ 1,343
Mobile Product Applications [Member]
Revenue from External Customer [Line Items]
Net revenue	391	354.2	1,119.8	1,174.1
PC Product Applications [Member]
Revenue from External Customer [Line Items]
Net revenue	$ 53.2	$ 48.3	$ 171.9	$ 168.9

Segment, Customers, and Geogr59

Segment, Customers, and Geographic Information - Major Customers as Percentage of Net Revenue (Detail) - Sales Revenue, Net [Member] - Customer Concentration Risk [Member]	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Customer A [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	27.00%	19.00%	24.00%	21.00%
Customer B [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	17.00%	27.00%	19.00%	21.00%
Customer C [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	13.00%		10.00%
Customer D [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	10.00%	14.00%		16.00%

Segment, Customers, and Geogr60

Segment, Customers, and Geographic Information - Major Customer Accounts Receivable as Percentage of Accounts Receivable (Detail) - Accounts Receivable [Member] - Credit Concentration Risk [Member]	9 Months Ended	12 Months Ended
	Mar. 31, 2017	Jun. 30, 2016
Customer A [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	16.00%
Customer B [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	15.00%	10.00%
Customer C [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	14.00%	12.00%
Customer D [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	14.00%	14.00%
Customer E [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage		13.00%
Customer F [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage		11.00%

Restructuring Activities Anno61

Restructuring Activities Announced June 2016 - Additional Information (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2017USD ($)
Restructuring Cost And Reserve [Line Items]
Restructuring and related cost, cost incurred to date	$ 7.3
Employee Severance and Benefits [Member]
Restructuring Cost And Reserve [Line Items]
Total restructuring charges	11.7
Restructuring and related cost, cost incurred to date	5
Facility Consolidation and Related Charges [Member]
Restructuring Cost And Reserve [Line Items]
Total restructuring charges	2.3
Restructuring and related cost, cost incurred to date	$ 2.3

Restructuring Activities Anno62

Restructuring Activities Announced June 2016 - Restructuring Liability Activities (Detail) $ in Millions	9 Months Ended
	Mar. 31, 2017USD ($)
Restructuring Cost And Reserve [Line Items]
Beginning Balance	$ 6.7
Additional accruals	7.3
Cash payments	(12.2)
Non-cash settlements	(0.8)
Ending Balance	1
Employee Severance and Benefits [Member]
Restructuring Cost And Reserve [Line Items]
Beginning Balance	6.7
Additional accruals	5
Cash payments	(11.6)
Ending Balance	0.1
Facility Consolidation and Related Charges [Member]
Restructuring Cost And Reserve [Line Items]
Additional accruals	2.3
Cash payments	(0.6)
Non-cash settlements	(0.8)
Ending Balance	$ 0.9