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Derivative Instruments (Realized and Unrealized Gains (Losses) on Derivatives) (Schedule and Footnotes) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Derivative [Line Items]
Gain (loss) on derivative instruments, net	$ 811.1	$ 1,237.3
Cross-currency and interest rate derivative contracts
Derivative [Line Items]
Gain (loss) on derivative instruments, net	784.6	842.3
Equity-related derivative instruments:
Derivative [Line Items]
Gain (loss) on derivative instruments, net	24.5	390.4
ITV Collar
Derivative [Line Items]
Gain (loss) on derivative instruments, net	(10.6)	383.4
Other
Derivative [Line Items]
Gain (loss) on derivative instruments, net	35.1	7.0
Foreign currency forward and option contracts
Derivative [Line Items]
Gain (loss) on derivative instruments, net	2.1	5.7
Other
Derivative [Line Items]
Gain (loss) on derivative instruments, net	$ (0.1)	$ (1.1)

X

- Definition

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5618551-113959

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+ References

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