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Net Loss Per Share (Tables)
 3 Months Ended
Mar. 31, 2025
Earnings Per Share [Abstract]  
Schedule of Reconciliation of the Average Number of Common and Potential Common Shares Outstanding Used in the Calculations of Basic and Diluted Net Loss Per Share
A reconciliation of the average number of common and potential common shares outstanding used in the calculations of basic and diluted net loss per share follows (in millions, shares in thousands):
Three Months Ended
March 31,
20252024
Numerator (basic and diluted):
Net loss
$(425.5)$(28.0)
Less: Dividends to participating securities(0.2)— 
Net loss attributable to Common Stockholders
$(425.7)$(28.0)
Denominator:
Average number of common shares outstanding54,447.2 54,267.9 
Effect of dilutive stock-based compensation(1)
— — 
Average number of common and potential common shares outstanding54,447.2 54,267.9 
(1) Diluted loss per share excludes an immaterial amount of weighted average potential common shares for the three months ended March 31, 2025 and 2024 as their inclusion would be anti-dilutive.