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Income Taxes - Reconciliation of U.S. Federal Statutory Tax Rate to Company's Effective Tax Rate (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2023 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Income tax provision |  |  |  |
Effective tax rate |  | 19.80% | 17.00% | 20.50%
Affiliate Transaction gains | $ 133.1 | $ 0.0 | $ 133.1 | $ 641.9
Unrealized gains |  | $ 3.7 | $ 2.6 |
EQT AB (“EQT”) |  |  |  |
Income tax provision |  |  |  |
Equity securities, realized gain |  |  |  | 43.8
Unrealized gains |  |  |  | $ 57.9
Controlling Interest |  |  |  |
Income tax provision |  |  |  |
Statutory U.S. federal tax rate |  | 21.00% | 21.00% | 21.00%
State income taxes, net of federal benefit |  | 3.50% | 3.50% | 3.50%
Foreign operations |  | (0.10%) | (4.10%) | (1.70%)
Compensation plans |  | 0.70% | 1.10% | 0.80%
Change in valuation allowances |  | (0.50%) | (0.10%) | 0.30%
Unrecognized tax benefits |  | 0.20% | 0.60% | 0.40%
BPEA Transaction |  | 0.00% | 0.00% | (1.00%)
Changes in U.S. tax provision to return |  | 0.50% | (0.70%) | 0.00%
Other |  | 0.20% | (0.40%) | 0.00%
Effective tax rate |  | 25.50% | 20.90% | 23.30%
Non-controlling interests |  |  |  |
Income tax provision |  |  |  |
Effect of income from non-controlling interests |  | (5.70%) | (3.90%) | (2.80%)

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