Fair Value Unobservable Inputs (Details) (USD $) In Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Mandatorily redeemable noncontrolling interests
Fair value assets and liabilities measured on recurring basis unobservable input reconciliation
Balance at beginning of period, mandatorily redeemable noncontrolling interests	$ 27.0	$ 61.8	$ 52.0	$ 47.8
Level 3 additions	0.3	2.1	0.8	2.1
Level 3 reductions	(2.0)	(16.1)	(28.0)	(2.9)
Realized losses included in net income	(0.1)	(0.3)	(0.5)	(1.1)
Foreign currency translation			0.1	0
Balance at end of period, mandatorily redeemable noncontrolling interests	25.4	48.1	25.4	48.1
Foreign currency derivatives
Fair value assets and liabilities measured on recurring basis unobservable input reconciliation
Foreign currency translation				0
Balance at beginning of period foreign currency derivatives		0.3		0.6
Level 3 additions		0		0
Level 3 reductions		0		0
Realized losses included in net income		(0.1)		(0.4)
Balance at end of period foreign currency derivatives		$ 0.2		$ 0.2