Equity Method Investments in Affiliates - Financial Information for Affiliates Accounted for Under the Equity Method (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Schedule of Equity Method Investments [Line Items]
Net income	$ 904.0	$ 740.6	$ 906.1
Assets	9,207.4	8,830.9
Equity Method Investee
Schedule of Equity Method Investments [Line Items]
Revenues	5,326.0	3,212.0	3,115.6
Net income	1,971.2	1,506.4	$ 1,313.0
Assets	4,539.9	3,348.2
Liabilities and Non-controlling interests	$ 2,114.1	$ 1,262.9