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Balance Sheet Accounts (Narratives) (Details) (USD $) | 3 Months Ended |  | 3 Months Ended | 0 Months Ended |  |
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Sep. 30, 2012 Investment_Securities | Oct. 02, 2011 | Jun. 30, 2012 | Sep. 30, 2012 Par Value | Sep. 30, 2012 Additional Paid-in Capital | Sep. 30, 2012 Minimum | Sep. 30, 2012 Maximum | Sep. 30, 2012 Cash Equivalents Maximum | Sep. 30, 2012 Short-term Investments Minimum | Sep. 30, 2012 Short-term Investments Maximum | Sep. 30, 2012 Marketable Securities Minimum | Sep. 30, 2012 Available-for-sale Securities Government and Corporate Debt Securities | Sep. 11, 2012 Santa Clara Headquarters acre | Sep. 30, 2012 Santa Clara Headquarters | Sep. 12, 2012 Santa Clara Headquarters building | Sep. 12, 2012 August 31, 2014 Santa Clara Headquarters building | Sep. 12, 2012 January 31, 2013 Santa Clara Headquarters building
Balance Sheet Accounts [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maturity period for investments |  |  |  |  |  |  |  | 3 months | 3 months | 1 year | 1 year | 3 years |  |  |  |  |
Number of securities with unrealized losses | 3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of investment securities | 63 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of acres of land sold |  |  |  |  |  |  |  |  |  |  |  |  | 16 |  |  |  |
Net cash proceeds from sale of real estate | $ 42,659,000 | $ 0 |  |  |  |  |  |  |  |  |  |  | $ 44,700,000 |  |  |  |
Number of buildings in sale-leaseback agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 | 2 | 1
Number of sold buildings on property |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4 |  |
Number of days of notice to terminate agreement |  |  |  |  |  |  |  |  |  |  |  |  | 30 days |  |  |  |
Future minimum rent payments for remainder of fiscal year 2013 |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,100,000 |  |  |
Future minimum rent payments for fiscal year 2014 |  |  |  |  |  |  |  |  |  |  |  |  |  | 5,500,000 |  |  |
Future minimum rent payments for fiscal year 2015 |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,000,000 |  |  |
Gain on sale of property | 11,537,000 | 0 |  |  |  |  |  |  |  |  |  |  | 11,700,000 |  |  |  |
Deferred gain on sale of property |  |  |  |  |  |  |  |  |  |  |  |  |  | 100,000 |  |  |
Amortization expense | 438,000 | 519,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
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 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum investment in one obligor or maker (percent) | 10.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of treasury stock shares retired | 39,631,836 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Carrying value of retired treasury stock | 0 |  | 149,666,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reduction in par value and APIC from retired treasury stock |  |  |  | $ 100,000 | $ 149,700,000 |  |  |  |  |  |  |  |  |  |  |  |

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(2) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 + Details
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- Definition Disclosure regarding factors used to determine that the impairment of securities not categorized as either held-to-maturity securities or trading securities (hence equal to available for sale securities) where cost exceeds fair value is not an other than temporary impairment (OTTI). This item contains disclosure of the number of investment positions in the available-for-sale investments determined to be temporarily impaired. + 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=6872113&loc=d3e27290-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 03-1 -Paragraph 21 -Subparagraph b(3) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 17 -Subparagraph b(3) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The difference between the sale price or salvage price and the book value of a property, plant, and equipment asset that was sold or retired during the reporting period. This element refers to the gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 + Details
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- Definition The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 16 -Subparagraph c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 15 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3179-108585 + Details
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- Definition Amount of decrease of par value, additional paid in capital (APIC) and retained earnings of common and preferred stock retired from treasury when treasury stock is accounted for under the cost method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Section B -Paragraph 7 -Subparagraph b -Chapter 1 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 + Details
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