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1. Basis of Presentation and Use of Estimates Immaterial Error Corrections (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Jun. 30, 2012
Mar. 31, 2012
Cost of goods sold, immaterial error [Member]
Mar. 31, 2012
Interest expense, immaterial error [Member]
Mar. 31, 2012
Other (income) expense, net, immaterial error [Member]
Mar. 31, 2012
Income tax benefit, immaterial error [Member]
Mar. 31, 2012
2007 through 2011 [Member]
Mar. 31, 2012
First quarter of 2011 [Member]
Mar. 31, 2012
2008 through 2011 [Member]
Mar. 31, 2012
2007 [Member]
Mar. 31, 2012
2008 [Member]
Mar. 31, 2012
2009 [Member]
Mar. 31, 2012
2010 [Member]
Mar. 31, 2012
2011 [Member]
Quantifying Misstatement in Current Year Financial Statements [Line Items]                          
Quantifying Misstatement Payment $ 5.6                        
Quantifying Misstatement Amount           6.1 (1.6) 0.9 1.1 1.5 1.3 1.6 (0.1)
Quantifying Misstatement in Current Year Financial Statements, Amount   $ 4.1 $ 1.2 $ 0.8 $ (0.7)