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Customer Allowances and Discounts - Additional Information (Detail) - USD ($)
$ in Millions
Aug. 26, 2016
Feb. 29, 2016
Aug. 28, 2015
Allowance for Rebates [Member]      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Trade allowances and discounts settled in cash $ 9.7 $ 16.0 $ 13.9