Restructuring Of Operations (Components Of Restructuring Initiatives) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		12 Months Ended	3 Months Ended	12 Months Ended			3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended		3 Months Ended	12 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Dec. 31, 2011	Mar. 31, 2012 2009 Restructuring Initiatives [Member]	Dec. 31, 2011 2009 Restructuring Initiatives [Member]		Dec. 31, 2009 2009 Restructuring Initiatives [Member]	Mar. 31, 2012 2010 Restructuring Initiatives [Member]	Dec. 31, 2011 2010 Restructuring Initiatives [Member]	Mar. 31, 2012 2011 Restructuring Initiatives [Member]	Dec. 31, 2011 2011 Restructuring Initiatives [Member]		Mar. 31, 2012 2012 Restructuring Initiatives [Member]	Dec. 31, 2011 2012 Restructuring Initiatives [Member]	Dec. 31, 2011 Brazil [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring reserve, beginning balance	$ 8.3	$ 19.4	$ 19.4	$ 1.3	$ 10.7			$ 2.9	$ 8.7	$ 4.1	$ 0		$ 0	$ 0
Restructuring charges (credits)	3.3	(0.7)	21.6	(0.1)	(0.5)		91.9	0	2.4	(0.1)	19.7		3.5	0
Non-cash items	0		(3.8)	0	0			0	0	0	(3.8)	[1]	0	0
Cash payments	(2.1)		(27.8)	(0.5)	(9.1)	[2]		(0.7)	(8.3)	(0.9)	(10.4)		0	0
Currency translation adjustments	0.2		(1.1)	0	0.2			0.1	0.1	0.1	(1.4)		0	0
Restructuring Reserve, Accrual Adjustment				0.1	0.5
Restructuring reserve, ending balance	9.7		8.3	0.7	1.3			2.3	2.9	3.2	4.1		3.5	0
Long term severance liability			5.4
Asset impairment charge															$ 4.0

[1] Includes a $4.0 charge for the write-off of plant assets at our manufacturing facility in Brazil; offset by reversals of certain asset retirement obligations.

[2] Includes a $5.4 payment to an insurance company to transfer a long term severance liability.