NEW YORK (S&P Global Ratings) Oct. 18, 2017--S&P Global Ratings said today that it assigned its 'A+' debt rating to UnitedHealth Group Inc.'s (UNH) proposed mix of floating-rate and fixed-rate senior unsecured notes. The transaction follows UNH's announcement of strong operating results for third-quarter 2017. The company raised its earnings expectations for the full year based on stable medical costs and well-balanced revenue/earnings contributions from its various UnitedHealthcare and Optum business segments. The debt issuance does not affect our 'A+' long-term counterparty credit rating on UNH. UNH will use debt proceeds to repay commercial paper borrowings and for general corporate purposes. This may include redeeming and repurchasing securities, refinancing debt, and acquisitions. Upcoming capital needs include about $2.5 billion of