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Income Taxes - Effective Income Tax Rate In Percentage (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Reconciliation between the U.S. corporate income tax rate and the effective income tax rate |  |  |  |
Income (loss) before income taxes | $ 248.4 | $ (293.8) | $ 780.4 | $ 777.2
Expected tax at the U.S. statutory rate | 52.2 | (61.7) | 163.9 | 163.2
Tax credits | (19.1) | (19.9) | (71.3) | (54.8)
Dividends received deduction | (23.1) | (19.3) | (61.1) | (57.0)
Impact of equity method presentation | (7.2) | (9.8) | (18.0) | (20.9)
Interest exclusion from taxable income | (6.2) | (5.9) | (17.1) | (17.8)
Impact of noncontrolling interest presentation | (4.3) | (5.6) | (13.1) | (6.3)
Changes in unrecognized tax benefits - Tax Cuts and Jobs Act of 2017 rate change |  |  | (5.4) |
Local country permanent tax adjustments | 0.3 | (6.6) | (2.5) | (4.4)
Low income housing tax credit amortization | 9.7 | 11.9 | 34.1 | 32.9
State income taxes | 6.5 | 5.3 | 18.2 | 27.4
Foreign country statutory rate differential | 4.1 | 6.0 | 17.1 | 2.8
Valuation allowance | 2.2 | 3.3 | 3.5 | 18.7
Other | (0.6) | 1.9 | 1.8 | (2.0)
Income taxes (benefits) | $ 14.5 | $ (100.4) | $ 50.1 | $ 81.8
Effective income tax rate (as a percent) | 6.00% | 34.00% | 6.00% | 11.00%

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