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Fair Value of Financial Instruments (Tables) | 9 Months Ended
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Mar. 30, 2025
Fair Value Disclosures [Abstract] |
Schedule of Financial Instruments Carried at Fair Value | The following table sets forth financial instruments carried at fair value within the U.S. GAAP hierarchy:
| March 30, 2025 |  | June 30, 2024
(in millions of U.S. Dollars) | Level 1 |  | Level 2 |  |  |  | Total |  | Level 1 |  | Level 2 |  |  |  | Total
Cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds | $113.1 |  |  | $— |  |  |  |  | $113.1 |  |  | $87.3 |  |  | $— |  |  |  |  | $87.3 |
Municipal bonds | — |  |  | 7.8 |  |  |  |  | 7.8 |  |  | — |  |  | — |  |  |  |  | — |
Corporate bonds | — |  |  | 4.3 |  |  |  |  | 4.3 |  |  | — |  |  | — |  |  |  |  | — |
U.S. treasury securities | 15.0 |  |  | — |  |  |  |  | 15.0 |  |  | 10.0 |  |  | — |  |  |  |  | 10.0 |
Commercial paper | — |  |  | 15.5 |  |  |  |  | 15.5 |  |  | — |  |  | — |  |  |  |  | — |
Total cash equivalents | 128.1 |  |  | 27.6 |  |  |  |  | 155.7 |  |  | 97.3 |  |  | — |  |  |  |  | 97.3 |
Short-term investments: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. treasury securities | 224.8 |  |  | — |  |  |  |  | 224.8 |  |  | 552.7 |  |  | — |  |  |  |  | 552.7 |
Corporate bonds | — |  |  | 262.1 |  |  |  |  | 262.1 |  |  | — |  |  | 417.0 |  |  |  |  | 417.0 |
Municipal bonds | — |  |  | 92.5 |  |  |  |  | 92.5 |  |  | — |  |  | 100.8 |  |  |  |  | 100.8 |
Commercial paper | — |  |  | 3.0 |  |  |  |  | 3.0 |  |  | — |  |  | 16.7 |  |  |  |  | 16.7 |
U.S. agency securities | — |  |  | — |  |  |  |  | — |  |  | — |  |  | 10.0 |  |  |  |  | 10.0 |
Certificates of deposit | — |  |  | 17.0 |  |  |  |  | 17.0 |  |  | — |  |  | 31.5 |  |  |  |  | 31.5 |
Total short-term investments | 224.8 |  |  | 374.6 |  |  |  |  | 599.4 |  |  | 552.7 |  |  | 576.0 |  |  |  |  | 1,128.7 |
Other current assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
MACOM Shares | 70.1 |  |  | — |  |  |  |  | 70.1 |  |  | — |  |  | — |  |  |  |  | — |
Total current assets | 70.1 |  |  | — |  |  |  |  | 70.1 |  |  | — |  |  | — |  |  |  |  | — |
Other long-term investments: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
MACOM Shares | — |  |  | — |  |  |  |  | — |  |  | 79.3 |  |  | — |  |  |  |  | 79.3 |
Total other long-term investments | $— |  |  | $— |  |  |  |  | $— |  |  | $79.3 |  |  | $— |  |  |  |  | $79.3 |
Total assets | $423.0 |  |  | $402.2 |  |  |  |  | $825.2 |  |  | $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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