Recent Accounting Changes and Accounting Pronouncements	6 Months Ended
Sep. 30, 2017
Accounting Changes and Error Corrections [Abstract]
Accounting Changes and Error Corrections [Text Block]	Recent Accounting Changes and Accounting Pronouncements In April 2014, the Financial Accounting Standards Board (FASB) issued the authoritative guidance, as amended, that outlines a new global revenue recognition standard that replaces virtually all existing U.S. GAAP guidance on contracts with customers and the related other assets and deferred costs. The authoritative guidance provides a five-step process for recognizing revenue that depicts the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The authoritative guidance also requires expanded qualitative and quantitative disclosures relating to the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. The new authoritative guidance is required to be applied retrospectively to each prior reporting period presented, or retrospectively with the cumulative effect of initially applying it recognized at the date of initial application. The Company is currently evaluating the full impact of this new authoritative guidance on its consolidated financial statements, including selection of the transition method. However, assuming all other revenue recognition criteria have been met, it is expected that the new authoritative guidance would require the Company to recognize revenue and cost relating to distributor sales upon product delivery (Sell-In), subject to estimated allowance for distributor price adjustments and rights of return, rather than deferring the distributor sales upon product delivery and subsequently recognizing revenue when the product is sold by the distributor to the end customer (Sell-Through). Upon adoption, the Company currently expects that it will record the balance of the deferred revenue (subject to true-ups) under Sell-Through to retained earnings, and the impact would be offset by the recognition of revenue on shipments post adoption under Sell-In. The Company continues to evaluate the impact to revenues and related disclosures related to the pending adoption of the new guidance and the preliminary assessments are subject to change. Depending on timing of customer orders, timing of shipment to distributors and to end customers, distributor inventory strategies and other factors that may be beyond the Company's control, the difference in revenue recognized under Sell-Through and Sell-In could be material in the future. The authoritative guidance will be effective for the Company beginning in fiscal year 2019 as the Company decided not to early adopt it in fiscal year 2018. In January 2016, the FASB issued the final authoritative guidance regarding how companies measure equity investments that do not result in consolidation and are not accounted for under the equity method and how they present changes in the fair value of financial liabilities measured under the fair value option. The new authoritative guidance also changes certain disclosure requirements and other aspects of current U.S. GAAP. It does not change the guidance for classifying and measuring investments in debt securities and loans. The authoritative guidance is effective for public business entities for annual periods beginning after December 15, 2017, and interim periods within those annual periods, which for Xilinx would be the first quarter of fiscal year 2019. Upon adoption, the Company would record all of the unrealized gains or losses from its investment in mutual funds to retained earnings, and subsequent changes in fair value from such investments will be recorded under its consolidated statements of income. In February 2016, the FASB issued the authoritative guidance on leases. The new authoritative guidance requires the recognition of assets and liabilities arising from lease transactions on the balance sheet and will also require significant additional disclosures about the amount, timing and uncertainty of cash flows from leases. Accordingly, a lessee will recognize a lease asset for its right to use the underlying asset and a lease liability for the corresponding lease obligation. The new authoritative guidance is effective for public business entities for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years, which for Xilinx would be the first quarter of fiscal year 2020. Early adoption is permitted. The new authoritative guidance must be adopted using a modified retrospective transition, and provides for certain practical expedients. In addition, the transition will require application of the new authoritative guidance at the beginning of the earliest comparative period presented. The Company is currently evaluating the impact of this new authoritative guidance on its consolidated financial statements. In August 2016, the FASB issued authoritative guidance for cash flow classification. The new authoritative guidance is intended to reduce diversity in practice in how cash receipts and cash payments are classified in the statement of cash flows. The new authoritative guidance will be effective for public business entities in fiscal years beginning after December 15, 2017, including interim periods within those years, which for Xilinx would be the first quarter of fiscal year 2019. Early adoption is permitted. The Company is currently evaluating the impact of this new authoritative guidance on its consolidated financial statements. In October 2016, the FASB issued authoritative guidance for accounting for income taxes which eliminates the deferred tax effects of intra-entity asset transfers other than inventory. As a result, a reporting entity would recognize the tax expense from the sale of an asset in the seller’s tax jurisdiction when the transfer occurs, even though the pre-tax effects of that transaction are eliminated in consolidation. The new authoritative guidance will be effective for public business entities in fiscal years beginning after December 15, 2017, which for Xilinx would be the first quarter of fiscal year 2019. Early adoption is permitted as of the beginning of the annual period. The authoritative guidance will be effective for the Company beginning in fiscal year 2019 as the Company decided not to early adopt it in fiscal year 2018. The Company is currently evaluating the impact of this new authoritative guidance on its consolidated financial statements. In May 2017, the FASB issued authoritative guidance that clarifies the scope of modification accounting for share-based compensation. Under the new guidance, modification accounting is required only if the fair value, the vesting conditions, or the classification of the award (as equity or liability) changes as a result of the change in terms or conditions. The new guidance will reduce diversity in practice and result in fewer changes to the terms of an award being accounted for as modifications. The new authoritative guidance will be effective for public business entities in fiscal years beginning after December 15, 2017, which for Xilinx would be the first quarter of fiscal year 2019. Early adoption is permitted as of the beginning of the annual period. The authoritative guidance will be effective for the Company beginning in fiscal year 2019 as the Company decided not to early adopt it in fiscal year 2018. The Company is currently evaluating the impact of this new authoritative guidance on its consolidated financial statements. In August 2017, the FASB issued authoritative guidance that amended the accounting for hedging activities. The guidance permits more hedging strategies to be eligible for hedge accounting and simplifies the application of hedge accounting guidance in areas where practice issues exist. The new authoritative guidance will be effective for public business entities for annual periods, and interim periods within those annual periods, beginning after December 15, 2018, which for Xilinx would be the first quarter of fiscal year 2020. Early adoption is permitted, including adoption in any interim periods after issuance of the authoritative guidance. The Company is currently evaluating the impact of this new authoritative guidance on its consolidated financial statements.

Recent Accounting Changes and Accounting Pronouncements

In April 2014, the Financial Accounting Standards Board (FASB) issued the authoritative guidance, as amended, that outlines a new global revenue recognition standard that replaces virtually all existing U.S. GAAP guidance on contracts with customers and the related other assets and deferred costs. The authoritative guidance provides a five-step process for recognizing revenue that depicts the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The authoritative guidance also requires expanded qualitative and quantitative disclosures relating to the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. The new authoritative guidance is required to be applied retrospectively to each prior reporting period presented, or retrospectively with the cumulative effect of initially applying it recognized at the date of initial application. The Company is currently evaluating the full impact of this new authoritative guidance on its consolidated financial statements, including selection of the transition method. However, assuming all other revenue recognition criteria have been met, it is expected that the new authoritative guidance would require the Company to recognize revenue and cost relating to distributor sales upon product delivery (Sell-In), subject to estimated allowance for distributor price adjustments and rights of return, rather than deferring the distributor sales upon product delivery and subsequently recognizing revenue when the product is sold by the distributor to the end customer (Sell-Through). Upon adoption, the Company currently expects that it will record the balance of the deferred revenue (subject to true-ups) under Sell-Through to retained earnings, and the impact would be offset by the recognition of revenue on shipments post adoption under Sell-In. The Company continues to evaluate the impact to revenues and related disclosures related to the pending adoption of the new guidance and the preliminary assessments are subject to change. Depending on timing of customer orders, timing of shipment to distributors and to end customers, distributor inventory strategies and other factors that may be beyond the Company's control, the difference in revenue recognized under Sell-Through and Sell-In could be material in the future. The authoritative guidance will be effective for the Company beginning in fiscal year 2019 as the Company decided not to early adopt it in fiscal year 2018.

In January 2016, the FASB issued the final authoritative guidance regarding how companies measure equity investments that do not result in consolidation and are not accounted for under the equity method and how they present changes in the fair value of financial liabilities measured under the fair value option. The new authoritative guidance also changes certain disclosure requirements and other aspects of current U.S. GAAP. It does not change the guidance for classifying and measuring investments in debt securities and loans. The authoritative guidance is effective for public business entities for annual periods beginning after December 15, 2017, and interim periods within those annual periods, which for Xilinx would be the first quarter of fiscal year 2019. Upon adoption, the Company would record all of the unrealized gains or losses from its investment in mutual funds to retained earnings, and subsequent changes in fair value from such investments will be recorded under its consolidated statements of income.

In February 2016, the FASB issued the authoritative guidance on leases. The new authoritative guidance requires the recognition of assets and liabilities arising from lease transactions on the balance sheet and will also require significant additional disclosures about the amount, timing and uncertainty of cash flows from leases. Accordingly, a lessee will recognize a lease asset for its right to use the underlying asset and a lease liability for the corresponding lease obligation. The new authoritative guidance is effective for public business entities for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years, which for Xilinx would be the first quarter of fiscal year 2020. Early adoption is permitted. The new authoritative guidance must be adopted using a modified retrospective transition, and provides for certain practical expedients. In addition, the transition will require application of the new authoritative guidance at the beginning of the earliest comparative period presented. The Company is currently evaluating the impact of this new authoritative guidance on its consolidated financial statements.

In August 2016, the FASB issued authoritative guidance for cash flow classification. The new authoritative guidance is intended to reduce diversity in practice in how cash receipts and cash payments are classified in the statement of cash flows. The new authoritative guidance will be effective for public business entities in fiscal years beginning after December 15, 2017, including interim periods within those years, which for Xilinx would be the first quarter of fiscal year 2019. Early adoption is permitted. The Company is currently evaluating the impact of this new authoritative guidance on its consolidated financial statements.

In October 2016, the FASB issued authoritative guidance for accounting for income taxes which eliminates the deferred tax effects of intra-entity asset transfers other than inventory. As a result, a reporting entity would recognize the tax expense from the sale of an asset in the seller’s tax jurisdiction when the transfer occurs, even though the pre-tax effects of that transaction are eliminated in consolidation. The new authoritative guidance will be effective for public business entities in fiscal years beginning after December 15, 2017, which for Xilinx would be the first quarter of fiscal year 2019. Early adoption is permitted as of the beginning of the annual period. The authoritative guidance will be effective for the Company beginning in fiscal year 2019 as the Company decided not to early adopt it in fiscal year 2018. The Company is currently evaluating the impact of this new authoritative guidance on its consolidated financial statements.

In May 2017, the FASB issued authoritative guidance that clarifies the scope of modification accounting for share-based compensation. Under the new guidance, modification accounting is required only if the fair value, the vesting conditions, or the classification of the award (as equity or liability) changes as a result of the change in terms or conditions. The new guidance will reduce diversity in practice and result in fewer changes to the terms of an award being accounted for as modifications. The new authoritative guidance will be effective for public business entities in fiscal years beginning after December 15, 2017, which for Xilinx would be the first quarter of fiscal year 2019. Early adoption is permitted as of the beginning of the annual period. The authoritative guidance will be effective for the Company beginning in fiscal year 2019 as the Company decided not to early adopt it in fiscal year 2018. The Company is currently evaluating the impact of this new authoritative guidance on its consolidated financial statements.

In August 2017, the FASB issued authoritative guidance that amended the accounting for hedging activities. The guidance permits more hedging strategies to be eligible for hedge accounting and simplifies the application of hedge accounting guidance in areas where practice issues exist. The new authoritative guidance will be effective for public business entities for annual periods, and interim periods within those annual periods, beginning after December 15, 2018, which for Xilinx would be the first quarter of fiscal year 2020. Early adoption is permitted, including adoption in any interim periods after issuance of the authoritative guidance. The Company is currently evaluating the impact of this new authoritative guidance on its consolidated financial statements.