Schedule II - Valuation and Qualifying Accounts (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009
Allowance for Doubtful Accounts [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance	$ 21.1	[1]	$ 21.9		$ 19.3
Impact of foreign currency exchange rate changes	(0.2)		(2.6)		0.1
Provision	4.4		4.9		8.3
Write-offs	(8.1)		(3.1)		(5.8)
Ending balance	17.2	[1]	21.1	[1]	21.9
Valuation Allowance of Deferred Tax Assets [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance	38.9		24.2		11.7
Provision	6.7		10.2		10.9
Changes attributable to acquisitions and dispositions	0		0		0.2
Changes impacting equity and other movements	(4.2)		5.2		1.8
Write-offs	(1.3)		(0.7)		(0.4)
Ending balance	$ 40.1		$ 38.9		$ 24.2

[1] See Note 22 -Restatement of Consolidated Financial Statements