Income Taxes (Table 6) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefits, beginning balance	$ 609.9	$ 513.5	$ 490.9
Reductions for tax positions of prior years	(184.2)	(42.2)	(50.2)
Additions for tax positions of prior years	112.9	27.0	64.5
Lapse of statute of limitations	(84.6)	(8.3)	(1.9)
Effects of business acquisitions	38.0	0.0	0.0
Additions based on tax positions related to the current year	33.5	142.3	38.2
Foreign currency translation	(10.9)	(22.3)	(27.0)
Settlements with tax authorities	(13.5)	(0.1)	(1.0)
Unrecognized tax benefits, ending balance	$ 501.1	$ 609.9	$ 513.5