NEW YORK (Standard&Poor's) Dec. 7, 2007--Standard&Poor's Ratings Services said today it assigned its 'A' senior unsecured debt ratings to Archer Daniels Midland Co.'s proposed $500 million 6.45% senior unsecured notes due 2038. At the same time, we affirmed our 'A' long-term and 'A-1' short-term corporate credit ratings on the Decatur, Ill.-based company. The outlook is stable. Proceeds are expected to be used for general corporate purposes, which may include meeting the company's working capital requirements, funding capital expenditures and possible acquisitions, and repaying debt. Pending the application of net proceeds, the company plans to invest the proceeds in marketable securities or reduce short-term debt. "The ratings on Archer Daniels Midland are supported by its position as