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Investments - Schedule of Contractual Maturities of Marketable Investments (Details) $ in Millions | Sep. 28, 2025 USD ($)
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Debt Securities, Available-for-sale [Line Items] |
Within One Year | $ 285.1
After One, Within Five Years | 69.3
After Ten Years | 0.0
Total | 354.4
U.S. treasury securities |
Debt Securities, Available-for-sale [Line Items] |
Within One Year | 121.4
After One, Within Five Years | 25.5
After Ten Years | 0.0
Total | 146.9
Corporate bonds |
Debt Securities, Available-for-sale [Line Items] |
Within One Year | 103.0
After One, Within Five Years | 32.6
After Ten Years | 0.0
Total | 135.6
Municipal bonds |
Debt Securities, Available-for-sale [Line Items] |
Within One Year | 49.7
After One, Within Five Years | 11.2
After Ten Years | 0.0
Total | 60.9
Certificates of deposit |
Debt Securities, Available-for-sale [Line Items] |
Within One Year | 5.0
After One, Within Five Years | 0.0
After Ten Years | 0.0
Total | 5.0
Commercial paper |
Debt Securities, Available-for-sale [Line Items] |
Within One Year | 6.0
After One, Within Five Years | 0.0
After Ten Years | 0.0
Total | $ 6.0

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- Definition Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing after tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 320 -Name Accounting Standards Codification -Section 50 -Paragraph 3A -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477268/942-320-50-3A + Details
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