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Restructuring and Acquisition Charges Restructuring and Related Activities (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2024
Restructuring Cost and Reserve [Line Items] |
Restructuring, Impairment, and Other Activities Disclosure [Text Block] | Restructuring and acquisition charges are presented in the table below.
|  |  | Three Months Ended March 31,
(in millions) |  |  |  | 2024 | 2023
Severance and other employment-related charges |  |  |  | $ | 4.5 |  | 25.7 |
Restructuring, pre-acquisition and post-acquisition charges |  |  |  | 7.4 |  | 8.2 |
Stock-based compensation expense for post-acquisition retention awards |  |  |  | 0.3 |  | 1.8 |
Fair value adjustments to earn-out liabilities |  |  |  | (10.5) |  | — |
Restructuring and acquisition charges |  |  |  | $ | 1.7 |  | 35.7 |

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