CHICAGO--(BUSINESS WIRE)--Fitch Ratings has affirmed the long-term Issuer Default Rating (IDR) and debt ratings for Tyco International plc (Tyco; NYSE: TYC) and Tyco International Finance S.A. (TIFSA) at 'A-'. The Rating Outlook is Stable. A full list of ratings follows at the end of this release. KEY RATING DRIVERS Fitch expects Tyco's credit metrics will be weak in the near term due to pressure on operating results from challenging economic conditions in the company's end-markets and signific