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Subsequent Events (Details) - Marketable equity securities - USD ($) shares in Millions, $ in Millions | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
May 08, 2017 | Apr. 01, 2017 | Apr. 01, 2017
Subsequent Event [Line Items] |  |  |
Gross realized gain on sale of marketable equity securities |  | $ 51.2 | $ 186.5
Lumentum |  |  |
Subsequent Event [Line Items] |  |  |
Number of shares sold (in shares) |  | 1.3 | 6.9
Subsequent Event | Lumentum |  |  |
Subsequent Event [Line Items] |  |  |
Number of shares sold (in shares) | 0.2 |  |
Gross proceeds from sale of securities | $ 10.1 |  |
Gross realized gain on sale of marketable equity securities | $ 8.4 |  |

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- Definition This item represents the difference between the gross realized gains and losses realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27357-111563 + Details
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- Definition The cash inflow associated with the sale of equity securities classified as available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=66010992&loc=d3e26853-111562 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3179-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 + Details
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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
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- Definition Available-For-Sale Securities, Number Of Equity Securities Sold + References No definition available. + Details
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- Details
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- Details
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- Details
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