Segment Reporting (Reconciliation of Operating Cash Flow to Earnings from Continuing Operations) (Schedule) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting, Measurement Disclosures [Abstract]
Total segment Adjusted OIBDA from continuing operations									$ 9,247.8	$ 8,667.3	$ 8,522.3
Share-based compensation expense									(296.9)	(318.2)	(257.2)
Depreciation and amortization									(5,801.1)	(5,825.8)	(5,500.1)
Impairment, restructuring and other operating items, net									(348.5)	(174.1)	(536.8)
Operating income	$ 824.2	$ 902.7	$ 487.8	$ 586.6	$ 621.3	$ 545.5	$ 624.9	$ 557.5	2,801.3	2,349.2	2,228.2
Interest expense									(2,638.4)	(2,441.4)	(2,544.7)
Realized and unrealized gains on derivative instruments, net									845.1	847.2	88.8
Foreign currency transaction losses, net									(290.0)	(1,149.2)	(836.5)
Realized and unrealized gains (losses) due to changes in fair values of certain investments and debt, net (notes 6, 8 and 10)									(461.5)	124.5	205.2
Losses on debt modification and extinguishment, net (note 10)									(237.2)	(388.0)	(186.2)
Gain on Dutch JV Transaction (note 5)									520.8	0.0	0.0
Other income (expense), net									9.3	(26.9)	(10.7)
Earnings (loss) from continuing operations before income taxes									$ 549.4	$ (684.6)	$ (1,055.9)