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Marketable Securities - Available-for-sale Debt Securities (Details) $ in Millions	Sep. 30, 2025 USD ($)
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	$ 103.5
Fair Value	104.1
U.S. government and agency securities
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	44.6
Gross Unrealized Gains	0.2
Fair Value	44.8
Corporate bonds and notes
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	58.9
Gross Unrealized Gains	0.4
Fair Value	$ 59.3

X

- Definition

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-2

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- Definition

Amortized cost excluding accrued interest, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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-Section 45
-Paragraph 1
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Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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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.

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