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Consolidated Balance Sheets (Parenthetical) - $ / shares
Dec. 28, 2019
Dec. 29, 2018
Preferred stock, shares authorized 10,000,000 10,000,000
Preferred stock, shares unissued 8,500,000 9,250,000
Common Stock, Par or Stated Value Per Share $ 2.5 $ 2.5
Common Stock, Shares Authorized 300,000,000 300,000,000
Common Stock, Shares, Issued 176,902,738 176,902,738
Cost of common stock in treasury, shares 23,396,329 25,600,288