I see plenty of discussion about importing Word styles into InDesign. Is there any way to do the inverse? Export styles from InDesign into Word? (Also, it would be helpful if I could share styles between different user accounts.)
You cannot export InDesign styles to Word styles. You can export formatted text in story by choosing File > Export > Rich Text Format.
To export an InDesign document to a Word document, you need to use a third party product like ID2Office from Recosoft:
If you scroll down the page to look at a screen capture of the process, you'll see an option to convert InDesign styles to Office styles.