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v3.25.3

Income Taxes - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Income Tax Disclosure [Line Items] |  |  |  |  |
Income tax expense | $ 41.7 | $ 56.6 | $ 143.7 | $ 164.8 |
Effective income tax rate (as a percent) | 17.50% | 23.80% | 21.80% | 23.40% |
Income tax expense (benefits), tax credit, discrete benefits charges | $ (21.5) | $ (1.5) | $ (20.1) | $ (5.7) |
Income tax benefit, tax credit, discrete items purchase of discounted federal tax credits |  |  |  | (3.2) |
Income tax benefits, tax credit, discrete items amended return interest income |  |  |  | (1.1) |
Income tax expense (benefits) tax credit discrete items release of reserves |  | $ (0.7) |  |  |
Income tax expense (benefits) tax credit discrete items resolution of federal income tax audit | (19.1) |  | (19.1) |  |
Unrecognized tax benefits | 46.2 |  | 46.2 |  | $ 61.6
Net unrecognized tax benefits, excluding interest and penalties that would affect the company's net income if recognized | 35.9 |  | 35.9 |  |
Interest and penalties expense (income) on unrecognized tax benefits |  |  | (4.1) | 3.0 |
Accruals for payment of interest and penalties | 7.7 |  | 7.7 |  |
Significant change in unrecognized tax benefits is reasonably possible, amount of unrecorded benefit | $ 18.2 |  | 18.2 |  |
Cash paid for purchase of transferable tax credits |  |  | $ 9.7 | $ 65.4 |

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