Basis of Presentation (Policies)	9 Months Ended
Basis of Presentation (Policies)	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, issued an accounting standard update, or ASU, on Income Taxes: Intra-Entity Transfers of Assets Other Than Inventory, which reduces the complexity in the accounting standards by allowing the recognition of current and deferred income taxes for an intra-entity asset transfer, other than inventory, when the transfer occurs. Historically, recognition of the income tax consequence was not recognized until the asset was sold to an outside party. This amendment should be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. There are no new disclosure requirements. This ASU is effective for us beginning in the first quarter of fiscal 2019, and early adoption is permitted. While we continue to evaluate the impact of the adoption of this ASU on our condensed consolidated financial statements, we believe the adoption will result in incremental volatility in our GAAP tax rate in those periods when we enter into intercompany sales transactions of acquired technologies in connection with post-acquisition integration activities. 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 financial statements, we believe it will impact our accounting for income taxes, specifically the timing of recognition of federal research credits. 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 financial statements. 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 financial statements. 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 financial statements.