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CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares
Dec. 31, 2016
Dec. 26, 2015
Common stock, authorized 800,000,000 800,000,000
Common stock, par value $ 0.01 $ 0.01
Common stock, issued shares 557,892,568 554,835,306
Treasury stock, shares 42,802,998 5,915,268