<graybeard> No, that's the difference between a page layout system and a word processor. </graybeard>
More seriously, word processor is to the tuple (natural language, text editor) as IDE is to the tuple (programming language, text editor). WYSIWYG is a (very, now) common feature of word processors like visual designers are a common feature of an GUI development focussed IDEs, but its not the definition of the category.