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Consolidated Balance Sheets (Parenthetical) - USD ($)
shares in Millions, $ in Millions
Jan. 03, 2016
Dec. 28, 2014
Allowance for trade accounts receivable $ 10.5 $ 10.7
Class A common stock    
Common stock, par value (in dollars per share) $ 1.00 $ 1.00
Common stock, shares issued (in shares) 36.6 36.6
Treasury stock, Class A shares (in shares) 2.1 2.4
Class B common stock    
Common stock, par value (in dollars per share) $ 1.00 $ 1.00
Common stock, shares issued (in shares) 3.5 3.5