Segment Reporting (Reconciliation of Consolidated Segment Adjusted OIBDA) (Schedule) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Segment Reporting, Measurement Disclosures [Abstract]
Adjusted OIBDA from continuing operations	$ 1,150.3	$ 1,183.3
Share-based compensation expense	(55.2)	(67.3)
Depreciation and amortization	(783.5)	(939.6)
Impairment, restructuring and other operating items, net	(31.0)	(70.9)
Operating income	280.6	105.5
Interest expense	(313.3)	(367.3)
Realized and unrealized gains (losses) on derivative instruments, net	1,237.3	(82.8)
Foreign currency transaction gains, net	391.7	138.6
Realized and unrealized losses due to changes in fair values of certain investments and debt, net	(529.8)	(8.2)
Losses on debt extinguishment, net	(54.5)	(0.5)
Share of results of affiliates, net	33.4	(70.9)
Other income, net	52.4	6.5
Earnings (loss) from continuing operations before income taxes	$ 1,097.8	$ (279.1)