"Certain detachment" refers to a state of being emotionally distant or objective, where someone can maintain a calm and unbiased perspective on a situation or person without getting too personally involved or attached. Full definition
Patrol carbines had been provided to certain detachments assessed as having the most need. (mathewsdinsdale.com)
As the term suggests, the analyst is involved in the activity of the group to be studied but also maintains a certain detachment. (religion-online.org)
The Christian does not depart from the world as it is, but he has a certain detachment in regard to all present things. (religion-online.org)