noun

the state of being objective or aloof.

he felt a sense of detachment from what was going on

objectivity,dispassion,dispassionateness,disinterest,indifference,aloofness,remoteness,distance,open-mindedness,neutrality,lack of bias,lack of prejudice,impartiality,fairness,fair-mindedness,equitability,even-handedness,unselfishness