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CONSOLIDATED BALANCE SHEETS (Parenthetical) - shares
Apr. 03, 2016
Dec. 31, 2015
Preferred stock, shares issued (shares) 0 0
Treasury stock, shares (shares) 145,772,541 143,124,384
Common stock    
Common stock, shares issued (shares) 299,281,967 299,281,967
Class B common stock    
Common stock, shares issued (shares) 60,619,777 60,619,777