Net Loss per Share - Reconciliation (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Numerator:
Net loss attributable to common stockholder—basic	$ (62.4)	$ (47.3)
Net loss attributable to common stockholders—diluted	$ (62.4)	$ (47.3)
Denominator:
Weighted average common shares outstanding—basic (in shares)	72,921,318	70,284,486
Weighted average common shares outstanding—diluted (in shares)	72,921,318	70,284,486
Net loss per share attributable to common stockholders—basic (usd per share)	$ (0.86)	$ (0.67)
Net loss per share attributable to common stockholders—diluted (usd per share)	$ (0.86)	$ (0.67)