U.S.-based ConAgra Foods Inc. has withdrawn its unsolicited offer to acquire Ralcorp Holdings Inc. We are affirming our 'BBB' corporate credit rating and other ratings on ConAgra. At the same time, we are removing the ratings from CreditWatch, where they were placed with negative implications on May 4, 2011. We are assigning our 'BBB' rating to ConAgra's new $1.5 billion revolving credit facility. The rating outlook is stable, reflecting our expectation that the company will maintain a prudent financial policy and credit measures near current levels. NEW YORK (Standard&Poor's) Sept. 22, 2011--Standard&Poor's Ratings Services said today it affirmed its 'BBB' corporate credit, its 'A-2' short-term and commercial paper rating, and other ratings on Omaha-based ConAgra Foods