Derivative Instruments (Realized and Unrealized Gains (Losses) on Derivatives) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Derivative [Line Items]
Realized and unrealized losses (gains) on derivative instruments, net	$ 622.9	$ (878.7)	$ (193.2)
Cross-currency and interest rate derivative contracts
Derivative [Line Items]
Realized and unrealized losses (gains) on derivative instruments, net	578.9	(1,184.3)	(207.3)
ITV Collar
Derivative [Line Items]
Realized and unrealized losses (gains) on derivative instruments, net	(11.8)	364.2	(84.4)
Other
Derivative [Line Items]
Realized and unrealized losses (gains) on derivative instruments, net	85.6	22.5	21.0
Total equity-related derivative instruments
Derivative [Line Items]
Realized and unrealized losses (gains) on derivative instruments, net	73.8	386.7	(63.4)
Foreign currency forward and option contracts
Derivative [Line Items]
Realized and unrealized losses (gains) on derivative instruments, net	(31.8)	(81.1)	77.4
Other
Derivative [Line Items]
Realized and unrealized losses (gains) on derivative instruments, net	$ 2.0	$ 0.0	$ 0.1