Investments - Components (Details) - USD ($) $ in Millions	Sep. 30, 2026	Dec. 31, 2025
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 2.0	$ 4.0
Unrealized Gains	0.0	0.0
Unrealized Losses	0.0	0.0
Estimated Fair Value	2.0	4.0
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		1.5
Unrealized Gains		0.0
Unrealized Losses		0.0
Estimated Fair Value		1.5
Securities guaranteed by U.S. government
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	2.0	2.5
Unrealized Gains	0.0	0.0
Unrealized Losses	0.0	0.0
Estimated Fair Value	$ 2.0	$ 2.5

Amortized cost 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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- Definition

Amount 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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