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Income Taxes - Schedule of Consolidated Provision for Income Taxes (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Income Tax Provision |  |  |  |
Income tax expense | $ 43.3 | $ 32.8 | $ 98.7 | $ 77.7
Non- controlling Interests |  |  |  |
Income Tax Provision |  |  |  |
Income tax expense | 2.4 | 1.2 | 4.5 | 3.6
Controlling Interest |  |  |  |
Income Tax Provision |  |  |  |
Income tax expense | 40.9 | 31.6 | 94.2 | 74.1
Income before income taxes (controlling interest) | $ 116.9 | $ 156.9 | $ 320.0 | $ 333.9
Effective tax rate (controlling interests) | 35.00% | 20.10% | 29.40% | 22.20%
Deferred income tax expense related to intangibles | $ 17.1 | $ 15.0 | $ 34.2 | $ 29.8

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- Definition The component of income tax expense for the period representing the tax effect of the difference between amortization of intangibles for book purposes and amortization of intangibles for tax purposes. + References No definition available. + Details
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