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Investments and Fair Value Measurements (Details 2) - USD ($) shares in Millions, $ in Millions | 3 Months Ended |  |
--- | --- | --- | ---
Oct. 01, 2016 | Oct. 03, 2015 | Jul. 02, 2016 | Aug. 01, 2015
Trading securities related to deferred compensation plan |  |  |  |
Term of maturities of securities classified as current assets included in short-term investments | 12 months |  |  |
Fair Value | $ 580.9 |  | $ 519.1 |
Other-than-temporary impairment loss | 0.0 | $ 0.0 |  |
Not designated | Foreign exchange forward contracts |  |  |  |
Foreign Currency Forward Contracts |  |  |  |
Derivative asset, fair value | 1.8 |  |  |
Derivative liability, fair value | 1.5 |  |  |
Gain on derivatives | 0.3 | $ 0.6 |  |
Not designated | Foreign exchange forward contracts | Held to purchase |  |  |  |
Foreign Currency Forward Contracts |  |  |  |
Notional amount of forward contracts | 119.9 |  | 110.0 |
Not designated | Foreign exchange forward contracts | Held to sell |  |  |  |
Foreign Currency Forward Contracts |  |  |  |
Notional amount of forward contracts | $ 56.4 |  | 55.2 |
Lumentum |  |  |  |
Trading securities related to deferred compensation plan |  |  |  |
Shares held in investment (in shares) | 3.4 |  |  | 11.7
Marketable equity investments |  |  |  |
Trading securities related to deferred compensation plan |  |  |  |
Fair Value | $ 141.1 |  | $ 171.3 |
Realized gain on sale of marketable equity securities | 81.5 |  |  |
Income tax effect related to gain on sale of marketable security | $ 0.0 |  |  |
Marketable equity investments | Lumentum |  |  |  |
Trading securities related to deferred compensation plan |  |  |  |
Shares held in investment (in shares) | 3.4 |  | 7.2 |
Number of shares sold (in shares) | 3.9 |  |  |
Cash equivalents |  |  |  |
Trading securities related to deferred compensation plan |  |  |  |
Fair Value | $ 23.9 |  | $ 36.1 |
Short-term investments |  |  |  |
Trading securities related to deferred compensation plan |  |  |  |
Fair Value | 415.2 |  | 311.1 |
Short-term investments | Marketable equity investments |  |  |  |
Trading securities related to deferred compensation plan |  |  |  |
Fair Value | 141.1 |  | 171.3 |
Other non-current assets |  |  |  |
Trading securities related to deferred compensation plan |  |  |  |
Fair Value | 0.7 |  | 0.6 |
Trading securities | Short-term investments |  |  |  |
Trading securities related to deferred compensation plan |  |  |  |
Deferred compensation plan assets | 2.5 |  | 2.4 |
Trading securities | Short-term investments | Debt securities |  |  |  |
Trading securities related to deferred compensation plan |  |  |  |
Deferred compensation plan assets | 0.2 |  | 0.3 |
Trading securities | Short-term investments | Money market instruments and funds |  |  |  |
Trading securities related to deferred compensation plan |  |  |  |
Deferred compensation plan assets | 0.8 |  | 0.8 |
Trading securities | Short-term investments | Marketable equity investments |  |  |  |
Trading securities related to deferred compensation plan |  |  |  |
Deferred compensation plan assets | $ 1.5 |  | $ 1.3 |

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