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Consolidated Balance Sheet (Parenthetical) - $ / shares
Dec. 31, 2016
Jun. 30, 2016
Serial preferred stock, par value $ 0.50 $ 0.50
Serial preferred stock, authorized 3,000,000 3,000,000
Serial preferred stock, issued 0 0
Common stock, par value $ 0.50 $ 0.50
Common stock, authorized 600,000,000 600,000,000
Common stock, issued 181,046,128 181,046,128
Treasury shares, shares 47,752,435 47,033,896