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Balance Sheet Accounts (Narratives) (Details) (USD $) | 3 Months Ended | 0 Months Ended
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Sep. 30, 2013 Investment_Securities | Sep. 30, 2012 | Sep. 30, 2013 Minimum | Sep. 30, 2013 Maximum | Sep. 30, 2013 Cash Equivalents Maximum | Sep. 30, 2013 Short-term Investments Minimum | Sep. 30, 2013 Short-term Investments Maximum | Sep. 30, 2013 Marketable Securities Minimum | Sep. 11, 2012 Santa Clara Headquarters acre
Balance Sheet Accounts [Line Items] |  |  |  |  |  |  |  |  |
Maturity period for investments |  |  |  |  | 3 months | 3 months | 1 year | 1 year |
Number of securities with unrealized losses | 26 |  |  |  |  |  |  |  |
Number of investment securities | 53 |  |  |  |  |  |  |  |
Other than temporary impairment loss on investments | $ 148,000 |  |  |  |  |  |  |  |
Number of acres of land sold |  |  |  |  |  |  |  |  | 16
Net cash proceeds from sale of real estate | 0 | 42,659,000 |  |  |  |  |  |  | 44,700,000
Gain on sale of property | $ 0 | $ 11,537,000 |  |  |  |  |  |  | $ 11,500,000
Maximum investment in one obligor or maker (percent) | 10.00% |  |  |  |  |  |  |  |
Extended warranty contracts period |  |  | 1 year | 5 years |  |  |  |  |
Standard hardware warranty period | 12 months |  |  |  |  |  |  |  |
Standard software warranty period | 90 days |  |  |  |  |  |  |  |
Limited lifetime hardware warranty maximum period after end of sale of product | 5 years |  |  |  |  |  |  |  |

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- Definition Number of investment positions in available-for-sale investments in a continuous unrealized loss position for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 + Details
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