CHICAGO--(BUSINESS WIRE)--Fitch Ratings has affirmed Fidelity National Information Systems, Inc.'s (FIS) Issuer-Default Rating (IDR) and senior unsecured notes ratings at 'BBB' and has revised the Rating Outlook to Negative from Stable. At June 30, 2015, the company had $5.043 billion in total debt outstanding. The rating action follows FIS's announcement of the proposed acquisition of SunGard, the ultimate parent of SunGard Data Systems, Inc. (SunGard), for $9.1 billion, including SunGard's de