Additionally, AM Best has downgraded the Long-Term ICR to "a-" (Excellent) from "a" (Excellent), and all existing Long-and Short-Term Issue Credit Ratings, (Long-Term IR; Short-Term IR) of the ultimate parent, The Allstate Corporation (Allcorp) [NYSE: ALL]. The outlook of these ratings is stable. AM Best also has downgraded the Long-Term ICR to "a-" (Excellent) from "a" (Excellent) and Long-Term IRs of National General Holdings Corp. (Delaware), an intermediate holding company of Allcorp.