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CONSOLIDATED BALANCE SHEETS (Parenthetical) - shares
Jul. 02, 2017
Dec. 31, 2016
Preferred stock, shares issued (shares) 0 0
Treasury stock, shares (shares) 147,487,088 147,642,009
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