You mean the text that appears in parentheses next to the shipping method on the order total lines? SO automagically removes that block of text because, well, it's so damn ugly.

It stretches the line way out beyond the others, and because that text sits in a table, it often bumps against the margins, forcing it onto a second or even third line. For a great example of this effect, see the Zone Shipping method.

If you want to see the text, you can disable the code that strips it in the invoice and order detail pages. Look for a block of code like the following...
Code:
      if ($order->totals[$i]['class'] == 'ot_shipping') {
        $format_shipping = explode(" (", $order->totals[$i]['title'], 2);
        $clean_shipping = rtrim($format_shipping[0], ":");
        $display_title = $clean_shipping . ':';
      }
      else {
        $display_title = $order->totals[$i]['title'];
      }