Business Acquisition - Additional Information (Detail) (USD $) In Millions, unless otherwise specified			9 Months Ended
	Sep. 30, 2012 2011 Revolving Credit Facility Due 2016 [Member]	Dec. 31, 2011 2011 Revolving Credit Facility Due 2016 [Member]	Sep. 30, 2012 Pure Ice Acquisition [Member]	Jul. 02, 2012 Pure Ice Acquisition [Member]	Sep. 30, 2012 Pure Ice Acquisition [Member] 2011 Revolving Credit Facility Due 2016 [Member]
Business Acquisition [Line Items]
Date of acquisition			Jul. 02, 2012
Total Consideration for the Acquisition				$ 66.2
Amount of Acquisition Purchase Price from Cash in Hand				45.0
Amount of Acquisition Purchase Price from Revolving Credit Facility				21.2
Outstanding borrowings under Products Corporation
Outstanding undrawn letters of credit	10.4		10.4
Goodwill acquired				$ 23.1