Subsequent Event	12 Months Ended
Mar. 31, 2012
Subsequent Event [Abstract]
Subsequent Event	Note 22. Subsequent Event On May 18, 2012, the jury in the trial of a patent infringement lawsuit filed by PACT against the Company concluded its deliberations. The jury found two patents held by PACT were valid and were willfully infringed by the Company. The jury awarded PACT the sum of $15.4 million as damages and royalties on past Xilinx sales. The Company recorded this award as other long-term liabilities on the Company’s consolidated balance sheet as of March 31, 2012. See Item 3. “Legal Proceedings,” included in Part I and “Note 18. Litigation Settlements and Contingencies” to our consolidated financial statements.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

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