Segment Reporting (Reconciliation of Consolidated Segment Adjusted OIBDA) (Schedule) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting, Measurement Disclosures [Abstract]
Earnings (loss) from continuing operations	$ (503.8)	$ (339.6)	$ 513.9	$ (646.5)
Income tax expense (benefit)	(158.0)	26.8	(77.9)	54.6
Other income, net	(9.5)	(32.5)	(61.9)	(39.0)
Share of results of affiliates, net	105.4	69.3	72.0	140.2
Losses on debt extinguishment, net	165.6	48.3	220.1	48.8
Realized and unrealized losses (gains) due to changes in fair values of certain investments and debt, net	(152.3)	138.7	377.5	146.9
Foreign currency transactions losses (gains), net	478.0	27.0	86.3	(111.6)
Realized and unrealized losses (gains) on derivative instruments, net	319.7	(152.9)	(917.6)	(70.1)
Interest expense	(281.7)	(363.6)	(595.0)	(730.9)
Operating income	526.8	148.7	807.4	254.2
Impairment, restructuring and other operating items, net	32.2	33.2	63.2	104.1
Depreciation and amortization	545.7	921.8	1,329.2	1,861.4
Share-based compensation expense	83.8	87.0	139.0	154.3
Adjusted EBITDA	$ 1,188.5	$ 1,190.7	$ 2,338.8	$ 2,374.0