Quarterly Financial Information - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended						12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Jun. 30, 2011	Dec. 31, 2012 Software [Member]	Dec. 31, 2012 Software [Member]
impairment of long lived assets to be disposed off						$ 1.8	$ 1.8
Gain (Loss) on Sale of Business					3.9
Impact On Net Income Due To Reversal Of Valuation Allowances	1.3	0.5	1.3	0.8
Overstatement Of Consolidated Net Sales	0.1		0.2	0.3
Reduction In Net Sales and Accounts Receivable		$ 0.5