DALLAS (Standard&Poor's) Dec. 22, 2015--Standard&Poor's Ratings Services assigned its 'AA-' long-term rating on the following series of debt issued for the Trinity Health Credit Group (Trinity): the Idaho Health Facilities Authority, Ind.'s $22.97 million series 2016ID revenue bonds; the Montgomery County, Md.'s $44.305 million series 2016 Maryland revenue bonds; the Michigan Finance Authority, Mich.'s $258.105 million series 2016 Michigan revenue and refunding bonds; and the Connecticut Health and Educational Facilities Authority, Conn.'s $227.84 million revenue bonds. In addition, Standard&Poor's Ratings Services affirmed its 'AA-' long-term rating and 'AA-/A-1+' dual rating (where applicable) on existing debt issued for Trinity. The outlook is stable. "The 'A-1+' short-term component of the dual ratings reflects our view of