Brad Tilton
ServiceNow Employee

The details tab has the form component in it and you can't just move fields out of the component. One thing you might try is removing the fields from the view that form component is showing in the details tab, then adding a second iteration of the form component to the user results or a new tab that shows a view with just the fields you want to move. I haven't actually tried this so I don't know for sure that it'll work but it's something to try.