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Net Loss Per Share (Tables) | 9 Months Ended
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Sep. 30, 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 September 30, |  | Nine Months Ended September 30,
| 2025 |  | 2024 |  | 2025 |  | 2024
Numerator (basic and diluted): |  |  |  |  |  |  |
Net loss | $ | (3.2) |  |  | $ | (20.8) |  |  | $ | (438.2) |  |  | $ | (50.2) |
Less: Dividends to participating securities | (0.2) |  |  | (0.1) |  |  | (0.5) |  |  | (0.2) |
Net loss attributable to Common Stockholders | $ | (3.4) |  |  | $ | (20.9) |  |  | $ | (438.7) |  |  | $ | (50.4) |
Denominator: |  |  |  |  |  |  |
Average number of common shares outstanding | 54,671.9 |  |  | 54,327.5 |  |  | 54,582.1 |  |  | 54,305.8 |
Effect of dilutive stock-based compensation(1) | — |  |  | — |  |  | — |  |  | — |
Average number of common and potential common shares outstanding | 54,671.9 |  |  | 54,327.5 |  |  | 54,582.1 |  |  | 54,305.8 |
(1)Diluted loss per share excludes an immaterial amount of weighted average potential common shares for the three and nine months ended September 30, 2025 and 2024 as their inclusion would be anti-dilutive.

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 + Details
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