The Bookalope extension enables InDesign to read Word (and similar) & ebook files, and receive a semantically structured and cleaned up InDesign document in IDML format.
Exportools Lite allows you to export individual document pages as PDF, PostScript, EPS, Text, InDesign format, JPEG, or IDML. You can also split documents (up to 5 pages), and export selections of items to several formats.