Equity Method Investments in Affiliates - Change in Equity Method Investments in Affiliates (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Change in Equity Method Investments in Affiliates [Roll Forward]
Balance at the beginning of the year	$ 3,368.3
Equity method earnings	107.6
Equity method intangible amortization	(21.7)
Distributions from equity method investments	(189.9)	$ (124.3)
Investments	29.9
Foreign currency translation	2.6
Other	2.0
Balance at the end of the year	$ 3,298.8