Segment Reporting (Reconciliation of Consolidated Segment Adjusted OIBDA) (Schedule) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Segment Reporting, Measurement Disclosures [Abstract]
Earnings (loss) from continuing operations	$ (973.6)	$ 587.2	$ (459.7)	$ (59.3)
Income tax benefit	(161.2)	(70.8)	(239.1)	(16.2)
Other income, net	(5.3)	(36.3)	(67.2)	(75.3)
Share of results of affiliates, net	27.1	32.8	99.1	173.0
Losses on debt extinguishment, net	0.3	48.5	220.4	97.3
Realized and unrealized losses (gains) due to changes in fair values of certain investments and debt, net	21.5	(56.4)	399.0	90.5
Foreign currency transaction losses (gains), net	755.7	(54.2)	842.0	(165.8)
Realized and unrealized losses (gains) on derivative instruments, net	717.8	(582.1)	(199.8)	(652.2)
Interest expense	(279.8)	(340.1)	(874.8)	(1,071.0)
Operating income	662.1	208.8	1,469.5	463.0
Impairment, restructuring and other operating items, net	(15.8)	36.0	47.4	140.1
Depreciation and amortization	458.5	892.9	1,787.7	2,754.3
Share-based compensation expense	104.4	74.0	243.4	228.3
Adjusted EBITDA	$ 1,209.2	$ 1,211.7	$ 3,548.0	$ 3,585.7