Learner's definition of DETACHMENT
1 [noncount] : lack of emotion or of personal interest
I wish the article had approached the issue with a bit more detachment.
In her films she views the modern world with an air/sense of detachment. [=aloofness]
He was able to discuss their concerns with cool detachment. [=impartiality]
2 a : the act or process of separating something from a larger thing b : a condition in which something has become separated from something else 3 [count] : a group of soldiers who have a special job or function