Due to the amount of data displayed, most reports require 8.5”x14” (Legal) paper in landscape mode to be printed. To print on 8.5”x11” (Letter) paper, first export the report to PDF and then print in Adobe Reader to fit to page. (This reduces the type size but allows you to fit more text on one page.)
Also, reports that have a width greater than 14” should be exported to PDF, so you can use various options to determine the best way to print.