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Cost-Reduction Actions - Cost-Reduction Charges And Other Costs (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2026 | Jun. 30, 2025 | Jun. 30, 2026 | Jun. 30, 2025
Restructuring Cost and Reserve [Line Items] |  |  |  |
Total workforce reductions | $ 4.1 | $ 1.5 | $ 4.8 | $ 1.2
Lease abandonment and other costs | 2.0 | 0.1 | 2.8 | 0.3
Asset impairment charges and write-offs | 0.0 | 3.2 | 0.0 | 3.2
Total | 6.1 | 4.8 | 7.6 | 4.7
Severance and other employee costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Total workforce reductions | 4.3 | 4.1 | 8.4 | 5.2
Total |  |  | 8.4 |
Changes in estimates |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Total workforce reductions | $ (0.2) | $ (2.6) | $ (3.6) | $ (4.0)

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