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Fair Value of Financial Instruments (Tables) | 12 Months Ended
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Jun. 29, 2025
Fair Value Disclosures [Abstract] |
Schedule of Financial Instruments Carried at Fair Value | Financial instruments carried at fair value were as follows:
| June 29, 2025 |  | June 30, 2024
(in millions of U.S. Dollars) | Level 1 |  | Level 2 |  |  |  | Total |  | Level 1 |  | Level 2 |  |  |  | Total
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds | $ | 61.8 |  |  | $ | — |  |  |  |  | $ | 61.8 |  |  | $ | 87.3 |  |  | $ | — |  |  |  |  | $ | 87.3 |
Corporate bonds | — |  |  | 1.2 |  |  |  |  | 1.2 |  |  | — |  |  | — |  |  |  |  | — |
U.S. treasury securities | 32.5 |  |  | — |  |  |  |  | 32.5 |  |  | 10.0 |  |  | — |  |  |  |  | 10.0 |
Commercial paper | — |  |  | 12.0 |  |  |  |  | 12.0 |  |  | — |  |  | — |  |  |  |  | — |
Total cash equivalents | 94.3 |  |  | 13.2 |  |  |  |  | 107.5 |  |  | 97.3 |  |  | — |  |  |  |  | 97.3 |
Short-term investments: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate bonds | — |  |  | 195.6 |  |  |  |  | 195.6 |  |  | — |  |  | 417.0 |  |  |  |  | 417.0 |
U.S. treasury securities | 192.1 |  |  | — |  |  |  |  | 192.1 |  |  | 552.7 |  |  | — |  |  |  |  | 552.7 |
Municipal bonds | — |  |  | 79.2 |  |  |  |  | 79.2 |  |  | — |  |  | 100.8 |  |  |  |  | 100.8 |
Certificates of deposit | — |  |  | 5.0 |  |  |  |  | 5.0 |  |  | — |  |  | 31.5 |  |  |  |  | 31.5 |
U.S. agency securities | — |  |  | — |  |  |  |  | — |  |  | — |  |  | 10.0 |  |  |  |  | 10.0 |
Commercial paper | — |  |  | 16.3 |  |  |  |  | 16.3 |  |  | — |  |  | 16.7 |  |  |  |  | 16.7 |
Total short-term investments | 192.1 |  |  | 296.1 |  |  |  |  | 488.2 |  |  | 552.7 |  |  | 576.0 |  |  |  |  | 1,128.7 |
Other current assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
MACOM Shares | 102.0 |  |  | — |  |  |  |  | 102.0 |  |  | — |  |  | — |  |  |  |  | — |
Total current assets | 102.0 |  |  | — |  |  |  |  | 102.0 |  |  | — |  |  | — |  |  |  |  | — |
Other long-term investments: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
MACOM Shares | — |  |  | — |  |  |  |  | — |  |  | 79.3 |  |  | — |  |  |  |  | 79.3 |
Total other long-term investments | — |  |  | — |  |  |  |  | — |  |  | 79.3 |  |  | — |  |  |  |  | 79.3 |
Total assets | $388.4 |  |  | $309.3 |  |  |  |  | $697.7 |  |  | $729.3 |  |  | $576.0 |  |  |  |  | $1,305.3 |

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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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