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Investments and Forward Contracts - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jan. 02, 2021 | Dec. 28, 2019 | Jan. 02, 2021 | Dec. 28, 2019 | Jun. 27, 2020
Investments, Forward Contracts and Fair Value Measurements |  |  |  |  |
Term of maturities of securities classified as current assets included in short-term investments |  |  | 12 months |  |
Estimated fair value of securities | $ 0.5 |  | $ 0.5 |  | $ 0.5
Foreign Currency Forward Contracts |  |  |  |  |
Total assets | 397.7 |  | 397.7 |  | 338.7
Total liabilities | 10.4 |  | $ 10.4 |  | 11.4
Not designated | Foreign exchange forward contracts |  |  |  |  |
Foreign Currency Forward Contracts |  |  |  |  |
Derivative asset, fair value |  |  |  |  | 2.2
Derivative liability, fair value |  |  |  |  | 1.5
Derivative, term of contract |  |  | 120 days |  |
Gains on derivatives | 6.9 | $ 4.8 | $ 13.3 | $ 2.2 |
Not designated | Foreign exchange forward contracts | Held to purchase |  |  |  |  |
Foreign Currency Forward Contracts |  |  |  |  |
Notional amount of forward contracts | 142.4 |  | 142.4 |  | 146.4
Not designated | Foreign exchange forward contracts | Held to sell |  |  |  |  |
Foreign Currency Forward Contracts |  |  |  |  |
Notional amount of forward contracts | 19.0 |  | 19.0 |  | 22.0
Other non-current assets |  |  |  |  |
Investments, Forward Contracts and Fair Value Measurements |  |  |  |  |
Estimated fair value of securities | 0.5 |  | 0.5 |  | 0.5
Foreign Currency Forward Contracts |  |  |  |  |
Total assets | 5.1 |  | 5.1 |  | 4.5
Short-term investments |  |  |  |  |
Investments, Forward Contracts and Fair Value Measurements |  |  |  |  |
Deferred compensation plan assets | 1.6 |  | 1.6 |  | 1.4
Foreign Currency Forward Contracts |  |  |  |  |
Total assets | 1.6 |  | 1.6 |  | 1.4
Prepayments and other current assets |  |  |  |  |
Foreign Currency Forward Contracts |  |  |  |  |
Total assets | 8.4 |  | 8.4 |  | 2.2
Other current liabilities |  |  |  |  |
Foreign Currency Forward Contracts |  |  |  |  |
Total liabilities | 1.5 |  | 1.5 |  | 1.5
Debt Securities | Short-term investments |  |  |  |  |
Investments, Forward Contracts and Fair Value Measurements |  |  |  |  |
Deferred compensation plan assets | 0.4 |  | 0.4 |  | 0.3
Money market instruments and funds | Short-term investments |  |  |  |  |
Investments, Forward Contracts and Fair Value Measurements |  |  |  |  |
Deferred compensation plan assets | 0.2 |  | 0.2 |  | 0.2
Equity Securities | Short-term investments |  |  |  |  |
Investments, Forward Contracts and Fair Value Measurements |  |  |  |  |
Deferred compensation plan assets | $ 1.0 |  | $ 1.0 |  | $ 0.9

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