SAN FRANCISCO (Standard&Poor's) Sept. 4, 2013--Standard&Poor's Ratings Services said today that it has assigned its 'A' debt rating to Ameriprise Financial Inc.'s pending senior unsecured debt issuance of $600 million. The issuance has a 10-year maturity. The company will use the proceeds for general corporate purposes, which may include repaying all or part of outstanding senior notes due in 2015 and 2039. Ameriprise maintains a competitive business profile encompassing a diversified product set offering wealth and advice management, brokerage, and protection products through its well-branded distribution network. Operating earnings increased to $690 million in the first half of 2013 from $589 million in the first half of 2012. Total shareholders' equity totaled $9.7 billion as of