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Restructuring - Summary of Activity Relating to Restructuring Plan Liabilities (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | [1] | Mar. 31, 2025
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | $ 1.8 | $ 0.1 |
2025 Plan |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Beginning balance | 0.0 |  |
Restructuring costs | 1.8 |  |
Costs paid or otherwise settled | (1.3) |  |
Ending balance | 0.5 |  | $ 0.5
2024 Plan |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Beginning balance | 4.7 |  |
Restructuring costs | 0.0 |  | 7.5
Costs paid or otherwise settled | (0.1) |  |
Ending balance | $ 4.6 |  | $ 4.6
[1] | Adjusted to reflect the retrospective change in inventory valuation methodology from LIFO to WAC. See Note 14 for further discussion.

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