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Investments and Fair Value Measurements (Details) - USD ($) $ in Millions | Oct. 01, 2016 | Jul. 02, 2016
--- | --- | ---
Available-For-Sale Investments |  |
Amortized Cost/ Carrying Cost | $ 469.0 | $ 410.0
Gross Unrealized Gains | 112.3 | 109.5
Gross Unrealized Losses | (0.4) | (0.4)
Fair Value | 580.9 | 519.1
Debt securities |  |
Available-For-Sale Investments |  |
Amortized Cost/ Carrying Cost | 440.0 | 347.9
Gross Unrealized Gains | 0.2 | 0.3
Gross Unrealized Losses | (0.4) | (0.4)
Fair Value | 439.8 | 347.8
U.S. treasuries |  |
Available-For-Sale Investments |  |
Amortized Cost/ Carrying Cost | 54.1 | 46.1
Gross Unrealized Gains | 0.0 | 0.0
Gross Unrealized Losses | 0.0 | 0.0
Fair Value | 54.1 | 46.1
U.S. agencies |  |
Available-For-Sale Investments |  |
Amortized Cost/ Carrying Cost | 37.6 | 24.9
Gross Unrealized Gains | 0.0 | 0.0
Gross Unrealized Losses | 0.0 | 0.0
Fair Value | 37.6 | 24.9
Municipal bonds and sovereign debt instruments |  |
Available-For-Sale Investments |  |
Amortized Cost/ Carrying Cost | 4.8 | 2.0
Gross Unrealized Gains | 0.0 | 0.0
Gross Unrealized Losses | 0.0 | 0.0
Fair Value | 4.8 | 2.0
Asset-backed securities |  |
Available-For-Sale Investments |  |
Amortized Cost/ Carrying Cost | 61.1 | 50.4
Gross Unrealized Gains | 0.1 | 0.1
Gross Unrealized Losses | (0.3) | (0.3)
Fair Value | 60.9 | 50.2
Corporate securities |  |
Available-For-Sale Investments |  |
Amortized Cost/ Carrying Cost | 276.3 | 224.5
Gross Unrealized Gains | 0.1 | 0.2
Gross Unrealized Losses | (0.1) | (0.1)
Fair Value | 276.3 | 224.6
Certificates of deposits |  |
Available-For-Sale Investments |  |
Amortized Cost/ Carrying Cost | 6.1 |
Gross Unrealized Gains | 0.0 |
Gross Unrealized Losses | 0.0 |
Fair Value | 6.1 |
Marketable equity securities |  |
Available-For-Sale Investments |  |
Amortized Cost/ Carrying Cost | 29.0 | 62.1
Gross Unrealized Gains | 112.1 | 109.2
Gross Unrealized Losses | 0.0 | 0.0
Fair Value | $ 141.1 | $ 171.3

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- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=65884222&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66010992&loc=d3e26610-111562 + Details
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