...CHICAGO (S&P Global Ratings) Dec. 22, 2017--S&P Global Ratings assigned its '##-' long-term rating to the Illinois Finance Authority's series 2018 taxable revenue bonds issued for the Ann & Robert H. Lurie Children's Hospital of Chicago (Lurie Children's). In addition, S&P Global Ratings affirmed its '##-' long-term rating and underlying rating (SPUR) on the authority's series 2008A and 2008B fixed-rate bonds and its '##-' long-term rating on the authority's series 2017A fixed rate bonds, all issued for Lurie Children's. Assured Guaranty Ltd. insures the series 2008A bonds. Children's Hospital of Chicago Medical Center is the parent organization for the system and we refer to the combined system in this report as Lurie Children's. The outlook is stable. Proceeds from the series 2018 fixed-rate revenue bonds will go toward the refunding of the remaining series 2008A revenue bonds. "The '##-' ratings reflect our view of such factors as Lurie Children's healthy balance sheet, continued good...