Word help does not help (bastards). The Internets assumes you are not using an awesome Unix-based OS, and tells you to select all the text and then use control-shift-F9. This does not work on a Mac, even though there is a control key. It's close, though:
Command-A (select all the text in the doc).
Command-Shift-F9 (changes all the field codes to text of just the results).
Better on a Mac:
Command-A (select all the text in the doc).C/o Adept Scientific from three years ago, and it still works today with Word Mac 2011.
Command-6 (changes all the field codes to text of just the results).