Derivative Instruments (Realized and Unrealized Gains (Losses) on Derivatives) (Schedule and Footnotes) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Derivative [Line Items]
Gain (loss) on derivative instruments, net	$ 508.5	$ 811.2
Cross-currency and interest rate derivative contracts
Derivative [Line Items]
Gain (loss) on derivative instruments, net	472.3	784.6
Equity-related derivative instruments:
Derivative [Line Items]
Gain (loss) on derivative instruments, net	0.2	24.5
ITV Collar
Derivative [Line Items]
Gain (loss) on derivative instruments, net	0.0	(10.6)
Other
Derivative [Line Items]
Gain (loss) on derivative instruments, net	0.2	35.1
Foreign currency forward and option contracts
Derivative [Line Items]
Gain (loss) on derivative instruments, net	36.4	2.1
Other
Derivative [Line Items]
Gain (loss) on derivative instruments, net	$ (0.4)	$ 0.0