Fair Value Measurements - Schedule of Debt and Equity Securities (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Fair Value Disclosures [Abstract]
Available-for-sale debt securities, cost	$ 12.1	$ 12.1
Total debt and equity securities, cost	12.1	12.1
Available-for-sale debt securities, fair value	11.8	11.8
Total debt and equity securities, fair value	11.8	11.8
Available-for-sale debt securities, gross unrealized gains	0.0	0.0
Available-for-sale debt securities, gross unrealized losses	$ (0.3)	$ (0.3)