Copy/Paste from word transfers strange caracters and codes

For example when copying/pasting text with bullets or numbers. For example :

<p class="MsoNormal"><!--[if !supportLists]-->&middot;<span>
</span><!--[endif]-->Bullet 1

It also add a lot of blank lines, to many in relation to the original. So it is very difficult to copy/text from other editor without having to reformat everything and erasing a lot of code added