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Equity Method Investments in Affiliates - Change in Equity Method Investments (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Change in Equity Method Investments in Affiliates [Roll Forward]
Balance, as of December 31, 2024	$ 2,246.6
Distributions of earnings	(379.7)	$ (357.3)
Return of capital	(3.8)	$ 0.0
Balance, as of September 30, 2025	2,529.1
Equity Method Investee
Change in Equity Method Investments in Affiliates [Roll Forward]
Balance, as of December 31, 2024	2,246.6
Investments in Affiliates	538.0
Affiliate transactions	(125.6)
Earnings, net of tax	299.7
Intangible amortization and impairments	(70.2)
Distributions of earnings	(379.1)
Return of capital	(3.8)
Foreign currency translation	23.5
Balance, as of September 30, 2025	2,529.1
Equity method investment, undistributed earnings	$ 123.1		$ 206.1

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Income (Loss) from Equity Method Investments Before Amortization of Intangibles

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
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