They are claiming $493M was written off 4th qtr but I only see a restructuring charge of $393M expensed.
It’s confusing, but the answer is that the $493M restructuring charge in FY4Q15 consists of two components: i) $100M in the gross-profit portion of the income statement; and ii) $393M in the operating-expense portion of the income statement. See slide #24 at http://www.monsanto.com/investors/Documents/2015/2015.10.06_MON_Q4F15_Earnings.pdf .