Divestitures - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	1 Months Ended	9 Months Ended	12 Months Ended
	Jan. 31, 2013	Sep. 30, 2013	Dec. 31, 2012 Product
Acquisitions And Divestitures [Line Items]
Pre-tax gain on the sale of brands and related assets		$ 13.2
Divested Brands
Acquisitions And Divestitures [Line Items]
Proceeds from sales of non-strategic, economy brands and related inventory	63
Revenue generated from disposal group			30
Revenue generated from disposal group, cases sold			1,800,000
Pre-tax gain on the sale of brands and related assets		12.0
After tax gain on sale of brands and related assets, net of tax		$ 8.0