The blog post points out all you need to do is Click Tools, Translate document and choose from any of the 42 languages currently supported. Another nice feature is that you will not lose your formatting in the translated document. Either save the newly translated document as new or replace the original.
Look out Microsoft. Google is rolling full speed ahead! One more feature we will look for in Microsoft’s online version of Office 2010.
Via Google Blog – Google Docs: now with translation