Investments - Schedule of Contractual Maturities of Marketable Investments (Details) $ in Millions	Dec. 28, 2025 USD ($)
Debt Securities, Available-for-sale [Line Items]
Within One Year	$ 209.1
After One, Within Five Years	54.4
After Ten Years	0.0
Total	263.5
U.S. treasury securities
Debt Securities, Available-for-sale [Line Items]
Within One Year	62.0
After One, Within Five Years	25.7
After Ten Years	0.0
Total	87.7
Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Within One Year	95.4
After One, Within Five Years	25.0
After Ten Years	0.0
Total	120.4
Municipal bonds
Debt Securities, Available-for-sale [Line Items]
Within One Year	45.5
After One, Within Five Years	3.7
After Ten Years	0.0
Total	49.2
Commercial paper
Debt Securities, Available-for-sale [Line Items]
Within One Year	6.2
After One, Within Five Years	0.0
After Ten Years	0.0
Total	$ 6.2

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

WOLFSPEED, INC. 10-Q