v3.25.4

Income Taxes - Reconciliation of the Effective Income Tax Rate (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Amount |  |  |
Federal statutory tax rate | $ 137.5 |  |
Other adjustments | 0.2 |  |
Valuation allowances | 3.5 |  |
Unrecognized tax benefits | (0.3) |  |
Effective tax rate | $ 121.5 | $ 188.4 | $ (84.4)
Percent |  |  |
Federal statutory tax rate | 25.00% | 25.00% | 23.50%
Tax rate differential |  | (2.70%) | (4.90%)
Other adjustments | 0.00% |  |
Change in other valuation allowances | 0.70% | 0.60% | 0.30%
Unrecognized tax benefits | (0.10%) |  |
Effective tax rate | 22.10% | 43.90% | (22.50%)
Switzerland |  |  |
Amount |  |  |
Tax rate differential | $ (44.8) |  |
Cantonal income taxes | 20.3 |  |
Other adjustments | $ 3.7 |  |
Percent |  |  |
Tax rate differential | (8.10%) |  |
Cantonal income taxes | 3.60% |  |
Other adjustments | 0.70% |  |
Other |  |  |
Amount |  |  |
Tax rate differential | $ 5.7 |  |
Percent |  |  |
Tax rate differential | 1.00% |  |
United States |  |  |
Amount |  |  |
Tax rate differential | $ (10.6) |  |
Other adjustments | (7.3) |  |
State and local income taxes | $ 13.6 |  |
Percent |  |  |
Tax rate differential | (1.90%) |  |
Other adjustments | (1.30%) |  |
State and local income taxes | 2.50% |  |

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