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Restructuring (Tables) | 9 Months Ended
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Sep. 30, 2025
2025 Plan |
Restructuring Cost and Reserve [Line Items] |
Summary of Activity Relating to Restructuring Plan Liabilities | The following table summarizes activity relating to the 2025 Restructuring Plan liabilities (in millions of dollars):
BALANCE, December 31, 2024 |  | $ | — |
Restructuring costs |  |  | 1.8 |
Costs paid or otherwise settled 1 |  |  | (1.3 | )
BALANCE, March 31, 2025 |  |  | 0.5 |
Restructuring costs |  |  | 0.1 |
Costs paid or otherwise settled 1 |  |  | (0.4 | )
BALANCE, June 30, 2025 |  | $ | 0.2 |
Restructuring costs |  |  | — |
Costs paid or otherwise settled 1 |  |  | (0.1 | )
BALANCE, September 30, 2025 |  | $ | 0.1 |
1. Cash paid during the quarter and nine months ended September 30, 2025 w as $0.1 million and $1.8 million, respectively.
2024 Plan |
Restructuring Cost and Reserve [Line Items] |
Summary of Activity Relating to Restructuring Plan Liabilities | The following table summarizes activity relating to the 2024 Restructuring Plan liabilities (in millions of dollars):
BALANCE, December 31, 2024 |  | $ | 4.7 |
Restructuring costs |  |  | — |
Costs paid or otherwise settled 1 |  |  | (0.1 | )
BALANCE, March 31, 2025 |  |  | 4.6 |
Restructuring costs |  |  | — |
Costs paid or otherwise settled 1 |  |  | — |
BALANCE, June 30, 2025 |  | $ | 4.6 |
Restructuring costs |  |  | — |
Costs paid or otherwise settled 1 |  |  | — |
BALANCE, September 30, 2025 |  | $ | 4.6 |
1. Cash paid during the quarter and nine months ended September 30, 2025 was $0.0 million and $0.1 million, respectively.

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