Fair Value Unobservable Inputs (Details) - Mandatorily redeemable noncontrolling interests [Member] - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation
Balance at beginning of period	$ 56.9	$ 46.8	$ 45.0	$ 32.8
Level 3 additions	0.8	6.8	11.2	21.8
Level 3 reductions	(1.1)	(10.0)	(1.2)	(11.4)
Realized losses included in net income	2.2	0.5	4.0	0.9
Foreign currency translation	(1.0)	0.8	(1.2)	0.8
Balance at end of period	$ 57.8	$ 44.9	$ 57.8	$ 44.9