Pandoc is a thing of wonder
... and still too much of a well-kept secret. I just used it to convert a paper from LaTeX to Word (I know, I know) in a flash, and the result was beautiful.
Of relevance to more people, it means you could write pretty much everything you want in Markdown and convert to HTML, Word, ODT, EPUB, etc. With the preponderance of good editing tools for Markdown on every device, it makes sense to use as a generic document format.