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Discontinued Operations - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Income (loss) from discontinued operations, net of income taxes $ 0.1 $ 1.3   $ 2.9
Net sales associated with the discontinued operations $ 0.1 $ 0.1 $ 0.1 $ 0.1