Acquisitions Redeemable Noncontrolling Interests (Details) - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014
Redeemable Noncontrolling Interests [Abstract]
Beginning Balance		$ 257.4	$ 249.1
Change in Related Noncontrolling Interests Balance		(9.4)	(6.7)
Additions		0.5	22.0
Redemptions and Other		(24.4)	(4.5)
Redemption Value Adjustments	[1]	2.4	(4.6)
Ending Balance		$ 226.5	$ 255.3

[1] In each reporting period, redeemable noncontrolling interests are reported at their estimated redemption value, but not less than their initial fair value. Any adjustment to the redemption value above initial value prior to exercise will also impact retained earnings or additional paid-in capital, except adjustments as a result of currency translation.