Derivative Instruments (Realized and Unrealized Gains (Losses) on Derivatives) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Derivative [Line Items]
Realized and unrealized gains (losses) on derivative instruments, net	$ (164.7)	$ 133.3
Cross-currency and interest rate derivative contracts
Derivative [Line Items]
Realized and unrealized gains (losses) on derivative instruments, net	(110.7)	177.1
Equity-related derivative instruments
Derivative [Line Items]
Realized and unrealized gains (losses) on derivative instruments, net	(49.2)	(43.5)
Foreign currency forward and option contracts
Derivative [Line Items]
Realized and unrealized gains (losses) on derivative instruments, net	(4.7)	(0.3)
Other
Derivative [Line Items]
Realized and unrealized gains (losses) on derivative instruments, net	$ (0.1)	$ 0.0