Fair Value Measurements - Recurring and Nonrecurring Fair Value Measurements (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024
Fair Value Measurements
Warrants, at fair value	$ 4.8	$ 9.0
Level 1
Fair Value Measurements
Restricted Cash Held in Trust	335.1	331.8
Level 2
Fair Value Measurements
Short-Term Investments	$ 7.6	$ 7.6

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